Added gofmt to format command

Fixes #716 #715

.dockerignore

@@ -1 +1 @@
-bin
+bin/*

.github/FUNDING.yml

@@ -0,0 +1 @@
+github: mikefarah

.github/ISSUE_TEMPLATE/bug_report_v3.md

@@ -1,8 +1,8 @@
 ---
-name: Bug report
+name: Bug report - V3
 about: Create a report to help us improve
 title: ''
-labels: bug
+labels: bug, v3
 assignees: ''
 
 ---
@@ -10,8 +10,14 @@ assignees: ''
 **Describe the bug**
 A clear and concise description of what the bug is.
 
+Note that any how to questions should be posted in the discussion board and not raised as an issue.
+
+Version of yq: 3.X.X
+Operating system: mac/linux/windows/....
+Installed via: docker/binary release/homebrew/snap/...
+
 **Input Yaml**
-Concise yaml document(s) (as simple as possible to show the bug)
+Concise yaml document(s) (as simple as possible to show the bug, please keep it to 10 lines or less)
 data1.yml:
 ```yaml
 this: should really work

.github/ISSUE_TEMPLATE/bug_report_v4.md

@@ -0,0 +1,51 @@
+---
+name: Bug report - V4
+about: Create a report to help us improve
+title: ''
+labels: bug, v4
+assignees: ''
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+Note that any how to questions should be posted in the discussion board and not raised as an issue.
+
+Version of yq: 4.X.X
+Operating system: mac/linux/windows/....
+Installed via: docker/binary release/homebrew/snap/...
+
+**Input Yaml**
+Concise yaml document(s) (as simple as possible to show the bug, please keep it to 10 lines or less)
+data1.yml:
+```yaml
+this: should really work
+```
+
+data2.yml:
+```yaml
+but: it strangely didn't
+```
+
+**Command**
+The command you ran:
+```
+yq eval-all 'select(fileIndex==0) | .a.b.c' data1.yml data2.yml
+```
+
+**Actual behavior**
+
+```yaml
+cat: meow
+```
+
+**Expected behavior**
+
+```yaml
+this: should really work
+but: it strangely didn't
+```
+
+**Additional context**
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/feature_request.md

@@ -1,17 +1,23 @@
 ---
-name: Feature request
+name: Feature request - V4
 about: Suggest an idea for this project
 title: ''
-labels: enhancement
+labels: enhancement, v4
 assignees: ''
 
 ---
 
-**Is your feature request related to a problem? Please describe.**
-A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+**Please describe your feature request.**
+A clear and concise description of what the request is and what it would solve. 
+Eg. I wish I could use yq to [...]
+
+Note:
+- how to questions should be posted in the discussion board and not raised as an issue.
+- V3 will no longer have any enhancements.
 
 **Describe the solution you'd like**
 If we have data1.yml like:
+(please keep to around 10 lines )
 
 ```yaml
 country: Australia
@@ -20,7 +26,7 @@ country: Australia
 And we run a command:
 
 ```bash
-yq predictWeather data1.yml
+yq eval 'predictWeatherOf(.country)'
 ```
 
 it could output

.github/workflows/go.yml

@@ -7,10 +7,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
 
-    - name: Set up Go 1.14
+    - name: Set up Go 1.15
       uses: actions/setup-go@v1
       with:
-        go-version: 1.14
+        go-version: 1.15
       id: go
 
     - name: Check out code into the Go module directory
@@ -28,7 +28,4 @@ jobs:
       run: |
         export PATH=${PATH}:`go env GOPATH`/bin
         scripts/devtools.sh
-    - name: Build
-      run: |
-        export PATH=${PATH}:`go env GOPATH`/bin
         make local build

.github/workflows/release.yml

@@ -0,0 +1,70 @@
+name: Release YQ
+on:
+  push:
+    tags:
+      - 'v*'
+
+jobs:
+  publishGitRelease:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-go@v2
+        with:
+          go-version: '^1.15'
+      - name: Cross compile
+        run: |
+          sudo apt-get install rhash -y
+          go get github.com/mitchellh/gox
+          ./scripts/xcompile.sh
+
+      - name: Create Release
+        id: create_release
+        uses: actions/create-release@v1.0.0
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: ${{ github.ref }}
+          release_name: ${{ github.ref }}
+          draft: true
+          prerelease: false
+
+      - uses: shogo82148/actions-upload-release-asset@v1
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: build/*
+
+  publishDocker:
+    environment: dockerhub
+    env:
+      IMAGE_NAME: mikefarah/yq
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+        with:
+          platforms: all
+  
+      - name: Set up Docker Buildx
+        id: buildx
+        uses: docker/setup-buildx-action@v1
+        with:
+          version: latest
+
+      - name: Available platforms
+        run: echo ${{ steps.buildx.outputs.platforms }} && docker version
+ 
+      - name: Build and push image
+        run: |
+          IMAGE_V_VERSION="$(git describe --tags --abbrev=0)"
+          IMAGE_VERSION=${IMAGE_V_VERSION:1}
+
+          SHORT_SHA1=$(git rev-parse --short HEAD)
+          PLATFORMS="linux/amd64,linux/ppc64le,linux/arm64"
+          echo "Building and pushing version ${IMAGE_VERSION} of image ${IMAGE_NAME}"
+          echo ${{ secrets.DOCKER_PASSWORD }} | docker login -u ${{ secrets.DOCKER_USERNAME }} --password-stdin
+          docker buildx build --platform "${PLATFORMS}" -t "${IMAGE_NAME}:${IMAGE_VERSION}"  -t "${IMAGE_NAME}:latest" -t "${IMAGE_NAME}:4" \
+            --push .
+    

Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.14 as builder
+FROM golang:1.15 as builder
 
 WORKDIR /go/src/mikefarah/yq
 
@@ -12,7 +12,7 @@ RUN CGO_ENABLED=0 make local build
 
 # Choose alpine as a base image to make this useful for CI, as many
 # CI tools expect an interactive shell inside the container
-FROM alpine:3.8 as production
+FROM alpine:3.12.3 as production
 
 COPY --from=builder /go/src/mikefarah/yq/yq /usr/bin/yq
 RUN chmod +x /usr/bin/yq
@@ -21,3 +21,5 @@ ARG VERSION=none
 LABEL version=${VERSION}
 
 WORKDIR /workdir
+
+ENTRYPOINT ["/usr/bin/yq"]

Dockerfile.dev

@@ -1,30 +1,10 @@
-FROM golang:1.14
+FROM golang:1.15
 
 COPY scripts/devtools.sh /opt/devtools.sh
 
 RUN set -e -x \
     && /opt/devtools.sh
-
-# install mkdocs
-RUN set -ex \
-    && buildDeps=' \
-        build-essential \
-        python3-dev \
-    ' \
-    && apt-get update && apt-get install -y --no-install-recommends \
-        $buildDeps \
-        python3 \
-        python3-setuptools \
-        python3-wheel \
-        python3-pip \
-    && pip3 install --upgrade \
-        pip \
-        'Markdown>=2.6.9' \
-        'mkdocs>=0.16.3' \
-        'mkdocs-material>=1.10.1' \
-        'markdown-include>=0.5.1' \
-    && apt-get purge -y --auto-remove $buildDeps \
-    && rm -rf /var/lib/apt/lists/*
+ENV PATH=/go/bin:$PATH
 
 ENV CGO_ENABLED 0
 ENV GOPATH /go:/yq

Makefile

@@ -17,6 +17,7 @@ help:
 	@echo '    make vendor          Install dependencies to vendor directory.'
 	@echo '    make format          Run code formatter.'
 	@echo '    make check           Run static code analysis (lint).'
+	@echo '    make secure          Run gosec.'
 	@echo '    make test            Run tests on project.'
 	@echo '    make cover           Run tests and capture code coverage metrics on project.'
 	@echo '    make clean           Clean the directory tree of produced artifacts.'
@@ -84,6 +85,10 @@ format: vendor
 check: format
 	${DOCKRUN} bash ./scripts/check.sh
 
+.PHONY: secure
+secure: 
+	${DOCKRUN} bash ./scripts/secure.sh
+
 .PHONY: test
 test: check
 	${DOCKRUN} bash ./scripts/test.sh
@@ -96,11 +101,6 @@ cover: check
 	@find cover -type d -exec chmod 755 {} \; || :
 	@find cover -type f -exec chmod 644 {} \; || :
 
-.PHONY: build-docs
-build-docs: prepare mkdocs.yml mkdocs/*
-	${DOCKRUN} mkdocs build
-	@find docs -type d -exec chmod 755 {} \; || :
-	@find docs -type f -exec chmod 644 {} \; || :
 
 .PHONY: release
 release: xcompile

README.md

@@ -3,44 +3,146 @@
 ![Build](https://github.com/mikefarah/yq/workflows/Build/badge.svg)  ![Docker Pulls](https://img.shields.io/docker/pulls/mikefarah/yq.svg) ![Github Releases (by Release)](https://img.shields.io/github/downloads/mikefarah/yq/total.svg) ![Go Report](https://goreportcard.com/badge/github.com/mikefarah/yq)
 
 
-a lightweight and portable command-line YAML processor
+a lightweight and portable command-line YAML processor. `yq` uses [jq](https://github.com/stedolan/jq) like syntax but works with yaml files as well as json. It doesn't yet support everything `jq` does - but it does support the most common operations and functions, and more is being added continuously.
 
-The aim of the project is to be the [jq](https://github.com/stedolan/jq) or sed of yaml files.
+yq is written in go - so you can download a dependency free binary for your platform and you are good to go! If you prefer there are a variety of package managers that can be used as well as docker, all listed below.
 
-## New version!
-V3 is officially out - if you've been using v2 and want/need to upgrade, checkout the [upgrade guide](https://mikefarah.gitbook.io/yq/upgrading-from-v2).
+## V4 released!
+V4 is now officially released, it's quite different from V3 (sorry for the migration), however it is much more similar to ```jq```, using a similar expression syntax and therefore support much more complex functionality! 
+
+If you've been using v3 and want/need to upgrade, checkout the [upgrade guide](https://mikefarah.gitbook.io/yq/v/v4.x/upgrading-from-v3).
+
+Support for v3 will cease August 2021, until then, critical bug and security fixes will still get applied if required.
 
 ## Install
 
 ### [Download the latest binary](https://github.com/mikefarah/yq/releases/latest)
 
-### MacOS:
+### wget
+Use wget to download the pre-compiled binaries:
+
+#### Compressed via tar.gz
+```bash
+wget https://github.com/mikefarah/yq/releases/download/${VERSION}/${BINARY}.tar.gz -O - |\
+  tar xz && mv ${BINARY} /usr/bin/yq
+```
+
+#### Plain binary
+
+```bash
+wget https://github.com/mikefarah/yq/releases/download/${VERSION}/${BINARY} -O /usr/bin/yq &&\
+    chmod +x /usr/bin/yq
+```
+
+For instance, VERSION=v4.2.0 and BINARY=yq_linux_amd64
+
+### MacOS / Linux via Homebrew:
+Using [Homebrew](https://brew.sh/)
 ```
 brew install yq
 ```
-### Ubuntu and other Linux distros supporting `snap` packages:
+
+or, for the (deprecated) v3 version:
+
+```
+brew install yq@3
+```
+
+Note that for v3, as it is a versioned brew it will not add the `yq` command to your path automatically. Please follow the instructions given by brew upon installation.
+
+### Linux via snap:
 ```
 snap install yq
 ```
 
-#### Snap notes
-`yq` installs with with [_strict confinement_](https://docs.snapcraft.io/snap-confinement/6233) in snap, this means it doesn't have direct access to root files. To read root files you can:
+or, for the (deprecated) v3 version:
 
 ```
-sudo cat /etc/myfile | yq r - a.path
+snap install yq --channel=v3/stable
+```
+
+#### Snap notes
+`yq` installs with [_strict confinement_](https://docs.snapcraft.io/snap-confinement/6233) in snap, this means it doesn't have direct access to root files. To read root files you can:
+
+```
+sudo cat /etc/myfile | yq e '.a.path' - 
 ```
 
 And to write to a root file you can either use [sponge](https://linux.die.net/man/1/sponge):
 ```
-sudo cat /etc/myfile | yq w - a.path value | sudo sponge /etc/myfile
+sudo cat /etc/myfile | yq e '.a.path = "value"' - | sudo sponge /etc/myfile
 ```
 or write to a temporary file:
 ```
-sudo cat /etc/myfile | yq w - a.path value | sudo tee /etc/myfile.tmp
+sudo cat /etc/myfile | yq e '.a.path = "value"' | sudo tee /etc/myfile.tmp
 sudo mv /etc/myfile.tmp /etc/myfile
 rm /etc/myfile.tmp
 ```
 
+### Run with Docker
+
+#### Oneshot use:
+
+```bash
+docker run --rm -v "${PWD}":/workdir mikefarah/yq <command> [flags] [expression ]FILE...
+```
+
+#### Run commands interactively:
+
+```bash
+docker run --rm -it -v "${PWD}":/workdir --entrypoint sh mikefarah/yq
+```
+
+It can be useful to have a bash function to avoid typing the whole docker command:
+
+```bash
+yq() {
+  docker run --rm -i -v "${PWD}":/workdir mikefarah/yq "$@"
+}
+```
+
+### Go Get:
+```
+GO111MODULE=on go get github.com/mikefarah/yq/v4
+```
+
+## Community Supported Installation methods
+As these are supported by the community :heart: - however, they may be out of date with the officially supported releases.
+
+# Webi
+
+```
+webi yq
+```
+
+See [webi](https://webinstall.dev/)
+Supported by @adithyasunil26 (https://github.com/webinstall/webi-installers/tree/master/yq)
+
+### Windows:
+[![Chocolatey](https://img.shields.io/chocolatey/v/yq.svg)](https://chocolatey.org/packages/yq)
+[![Chocolatey](https://img.shields.io/chocolatey/dt/yq.svg)](https://chocolatey.org/packages/yq)
+```
+choco install yq
+```
+Supported by @chillum (https://chocolatey.org/packages/yq)
+
+### Mac:
+Using [MacPorts](https://www.macports.org/)
+```
+sudo port selfupdate
+sudo port install yq
+```
+Supported by @herbygillot (https://ports.macports.org/maintainer/github/herbygillot)
+
+### Alpine Linux
+- Enable edge/community repo by adding ```$MIRROR/alpine/edge/community``` to ```/etc/apk/repositories```
+- Update database index with ```apk update```
+- Install yq with ```apk add yq```
+
+Supported by Tuan Hoang
+https://pkgs.alpinelinux.org/package/edge/community/x86/yq
+
+
 ### On Ubuntu 16.04 or higher from Debian package:
 ```sh
 sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys CC86BB64
@@ -48,52 +150,24 @@ sudo add-apt-repository ppa:rmescandon/yq
 sudo apt update
 sudo apt install yq -y
 ```
-Supported by @rmescandon
-
-### Go Get:
-```
-GO111MODULE=on go get github.com/mikefarah/yq/v3
-```
-
-## Run with Docker
-
-Oneshot use:
-
-```bash
-docker run --rm -v ${PWD}:/workdir mikefarah/yq yq [flags] <command> FILE...
-```
-
-Run commands interactively:
-
-```bash
-docker run --rm -it -v ${PWD}:/workdir mikefarah/yq sh
-```
-
-It can be useful to have a bash function to avoid typing the whole docker command:
-
-```bash
-yq() {
-  docker run --rm -i -v ${PWD}:/workdir mikefarah/yq yq $@
-}
-```
+Supported by @rmescandon (https://launchpad.net/~rmescandon/+archive/ubuntu/yq)
 
 ## Features
+- [Detailed documentation with many examples](https://mikefarah.gitbook.io/yq/)
 - Written in portable go, so you can download a lovely dependency free binary
-- [Colorize the output](https://mikefarah.gitbook.io/yq/usage/output-format#colorize-output)
-- [Deep read a yaml file with a given path expression](https://mikefarah.gitbook.io/yq/commands/read#basic)
-- [List matching paths of a given path expression](https://mikefarah.gitbook.io/yq/commands/read#path-only)
-- [Return the lengths of arrays/object/scalars](https://mikefarah.gitbook.io/yq/commands/read#printing-length-of-the-results)
-- Update a yaml file given a [path expression](https://mikefarah.gitbook.io/yq/commands/write-update#basic) or [script file](https://mikefarah.gitbook.io/yq/commands/write-update#basic)
-- Update creates any missing entries in the path on the fly
-- Deeply [compare](https://mikefarah.gitbook.io/yq/commands/compare) yaml files
-- Keeps yaml formatting and comments when updating
-- [Validate a yaml file](https://mikefarah.gitbook.io/yq/commands/validate)
-- Create a yaml file given a [deep path and value](https://mikefarah.gitbook.io/yq/commands/create#creating-a-simple-yaml-file) or a [script file](https://mikefarah.gitbook.io/yq/commands/create#creating-using-a-create-script)
-- [Prefix a path to a yaml file](https://mikefarah.gitbook.io/yq/commands/prefix)
-- [Convert to/from json to yaml](https://mikefarah.gitbook.io/yq/usage/convert)
-- [Pipe data in by using '-'](https://mikefarah.gitbook.io/yq/commands/read#from-stdin)
-- [Merge](https://mikefarah.gitbook.io/yq/commands/merge) multiple yaml files with various options for [overriding](https://mikefarah.gitbook.io/yq/commands/merge#overwrite-values) and [appending](https://mikefarah.gitbook.io/yq/commands/merge#append-values-with-arrays)
-- Supports multiple documents in a single yaml file for [reading](https://mikefarah.gitbook.io/yq/commands/read#multiple-documents), [writing](https://mikefarah.gitbook.io/yq/commands/write-update#multiple-documents) and [merging](https://mikefarah.gitbook.io/yq/commands/merge#multiple-documents)
+- Uses similar syntax as `jq` but works with YAML and JSON files
+- Fully supports multi document yaml files
+- Colorized yaml output
+- [Deeply traverse yaml](https://mikefarah.gitbook.io/yq/operators/traverse-read)
+- [Sort yaml by keys](https://mikefarah.gitbook.io/yq/operators/sort-keys)
+- Manipulate yaml [comments](https://mikefarah.gitbook.io/yq/operators/comment-operators), [styling](https://mikefarah.gitbook.io/yq/operators/style), [tags](https://mikefarah.gitbook.io/yq/operators/tag) and [anchors and aliases](https://mikefarah.gitbook.io/yq/operators/anchor-and-alias-operators).
+- [Update yaml inplace](https://mikefarah.gitbook.io/yq/v/v4.x/commands/evaluate#flags)
+- [Complex expressions to select and update](https://mikefarah.gitbook.io/yq/operators/select#select-and-update-matching-values-in-map)
+- Keeps yaml formatting and comments when updating (though there are issues with whitespace)
+- [Convert to/from json to yaml](https://mikefarah.gitbook.io/yq/v/v4.x/usage/convert)
+- [Pipe data in by using '-'](https://mikefarah.gitbook.io/yq/v/v4.x/commands/evaluate)
+- [General shell completion scripts (bash/zsh/fish/powershell)](https://mikefarah.gitbook.io/yq/v/v4.x/commands/shell-completion)
+- [Reduce](https://mikefarah.gitbook.io/yq/operators/reduce) to merge multiple files or sum an array or other fancy things.
 
 ## [Usage](https://mikefarah.gitbook.io/yq/)
 
@@ -105,24 +179,33 @@ Usage:
   yq [command]
 
 Available Commands:
-  compare     yq x [--prettyPrint/-P] dataA.yaml dataB.yaml 'b.e(name==fr*).value'
-  delete      yq d [--inplace/-i] [--doc/-d index] sample.yaml 'b.e(name==fred)'
-  help        Help about any command
-  merge       yq m [--inplace/-i] [--doc/-d index] [--overwrite/-x] [--append/-a] sample.yaml sample2.yaml
-  new         yq n [--script/-s script_file] a.b.c newValue
-  prefix      yq p [--inplace/-i] [--doc/-d index] sample.yaml a.b.c
-  read        yq r [--printMode/-p pv] sample.yaml 'b.e(name==fr*).value'
-  validate    yq v sample.yaml
-  write       yq w [--inplace/-i] [--script/-s script_file] [--doc/-d index] sample.yaml 'b.e(name==fr*).value' newValue
+  eval             Apply expression to each document in each yaml file given in sequence
+  eval-all         Loads _all_ yaml documents of _all_ yaml files and runs expression once
+  help             Help about any command
+  shell-completion Generate completion script
 
 Flags:
-  -C, --colors        print using colors
+  -C, --colors        force print with colors
+  -e, --exit-status   set exit status if there are no matches or null or false is returned
   -h, --help          help for yq
   -I, --indent int    sets indent level for output (default 2)
-  -P, --prettyPrint   pretty print
-  -j, --tojson        output as json. By default it prints a json document in one line, use the prettyPrint flag to print a formatted doc.
+  -i, --inplace       update the yaml file inplace of first yaml file given.
+  -M, --no-colors     force print with no colors
+  -N, --no-doc        Don't print document separators (---)
+  -n, --null-input    Don't read input, simply evaluate the expression given. Useful for creating yaml docs from scratch.
+  -P, --prettyPrint    pretty print, shorthand for '... style = ""' 
+  -j, --tojson        output as json. Set indent to 0 to print json in one line.
   -v, --verbose       verbose mode
   -V, --version       Print version information and quit
 
 Use "yq [command] --help" for more information about a command.
 ```
+
+Simple Example:
+
+```bash
+yq e '.a.b | length' f1.yml f2.yml 
+```
+
+## Known Issues / Missing Features
+- `yq` attempts to preserve comment positions and whitespace as much as possible, but it does not handle all scenarios (see https://github.com/go-yaml/yaml/tree/v3 for details)

cmd/compare.go

@@ -1,87 +0,0 @@
-package cmd
-
-import (
-	"bufio"
-	"bytes"
-	"os"
-	"strings"
-
-	"github.com/kylelemons/godebug/diff"
-	"github.com/mikefarah/yq/v3/pkg/yqlib"
-	errors "github.com/pkg/errors"
-	"github.com/spf13/cobra"
-)
-
-// turn off for unit tests :(
-var forceOsExit = true
-
-func createCompareCmd() *cobra.Command {
-	var cmdCompare = &cobra.Command{
-		Use:     "compare [yaml_file_a] [yaml_file_b]",
-		Aliases: []string{"x"},
-		Short:   "yq x [--prettyPrint/-P] dataA.yaml dataB.yaml 'b.e(name==fr*).value'",
-		Example: `
-yq x - data2.yml # reads from stdin
-yq x -pp dataA.yaml dataB.yaml '**' # compare paths
-yq x -d1 dataA.yaml dataB.yaml 'a.b.c'
-`,
-		Long: "Deeply compares two yaml files, prints the difference. Use with prettyPrint flag to ignore formatting differences.",
-		RunE: compareDocuments,
-	}
-	cmdCompare.PersistentFlags().StringVarP(&docIndex, "doc", "d", "0", "process document index number (0 based, * for all documents)")
-	cmdCompare.PersistentFlags().StringVarP(&printMode, "printMode", "p", "v", "print mode (v (values, default), p (paths), pv (path and value pairs)")
-	cmdCompare.PersistentFlags().StringVarP(&defaultValue, "defaultValue", "D", "", "default value printed when there are no results")
-	return cmdCompare
-}
-
-func compareDocuments(cmd *cobra.Command, args []string) error {
-	var path = ""
-
-	if len(args) < 2 {
-		return errors.New("Must provide at 2 yaml files")
-	} else if len(args) > 2 {
-		path = args[2]
-	}
-
-	var updateAll, docIndexInt, errorParsingDocIndex = parseDocumentIndex()
-	if errorParsingDocIndex != nil {
-		return errorParsingDocIndex
-	}
-
-	var matchingNodesA []*yqlib.NodeContext
-	var matchingNodesB []*yqlib.NodeContext
-	var errorDoingThings error
-
-	matchingNodesA, errorDoingThings = readYamlFile(args[0], path, updateAll, docIndexInt)
-
-	if errorDoingThings != nil {
-		return errorDoingThings
-	}
-
-	matchingNodesB, errorDoingThings = readYamlFile(args[1], path, updateAll, docIndexInt)
-	if errorDoingThings != nil {
-		return errorDoingThings
-	}
-
-	var dataBufferA bytes.Buffer
-	var dataBufferB bytes.Buffer
-	errorDoingThings = printResults(matchingNodesA, bufio.NewWriter(&dataBufferA))
-	if errorDoingThings != nil {
-		return errorDoingThings
-	}
-	errorDoingThings = printResults(matchingNodesB, bufio.NewWriter(&dataBufferB))
-	if errorDoingThings != nil {
-		return errorDoingThings
-	}
-
-	diffString := diff.Diff(strings.TrimSuffix(dataBufferA.String(), "\n"), strings.TrimSuffix(dataBufferB.String(), "\n"))
-
-	if len(diffString) > 1 {
-		cmd.Print(diffString)
-		cmd.Print("\n")
-		if forceOsExit {
-			os.Exit(1)
-		}
-	}
-	return nil
-}

cmd/constant.go

@@ -1,31 +1,19 @@
 package cmd
 
-import (
-	"github.com/mikefarah/yq/v3/pkg/yqlib"
-	logging "gopkg.in/op/go-logging.v1"
-)
-
-var customTag = ""
-var printMode = "v"
-var printLength = false
 var unwrapScalar = true
-var stripComments = false
-var collectIntoArray = false
+
 var writeInplace = false
-var writeScript = ""
-var sourceYamlFile = ""
 var outputToJSON = false
-var prettyPrint = false
-var explodeAnchors = false
+
+var exitStatus = false
+var forceColor = false
+var forceNoColor = false
 var colorsEnabled = false
-var defaultValue = ""
 var indent = 2
-var overwriteFlag = false
-var autoCreateFlag = true
-var appendFlag = false
+var noDocSeparators = false
+var nullInput = false
 var verbose = false
 var version = false
-var docIndex = "0"
-var log = logging.MustGetLogger("yq")
-var lib = yqlib.NewYqLib()
-var valueParser = yqlib.NewValueParser()
+var prettyPrint = false
+
+var completedSuccessfully = false

cmd/delete.go

@@ -1,41 +0,0 @@
-package cmd
-
-import (
-	"github.com/mikefarah/yq/v3/pkg/yqlib"
-	errors "github.com/pkg/errors"
-	"github.com/spf13/cobra"
-)
-
-func createDeleteCmd() *cobra.Command {
-	var cmdDelete = &cobra.Command{
-		Use:     "delete [yaml_file] [path_expression]",
-		Aliases: []string{"d"},
-		Short:   "yq d [--inplace/-i] [--doc/-d index] sample.yaml 'b.e(name==fred)'",
-		Example: `
-yq delete things.yaml 'a.b.c'
-yq delete things.yaml 'a.*.c'
-yq delete things.yaml 'a.(child.subchild==co*).c'
-yq delete things.yaml 'a.**'
-yq delete --inplace things.yaml 'a.b.c'
-yq delete --inplace -- things.yaml '--key-starting-with-dash' # need to use '--' to stop processing arguments as flags
-yq d -i things.yaml 'a.b.c'
-	`,
-		Long: `Deletes the nodes matching the given path expression from the YAML file.
-Outputs to STDOUT unless the inplace flag is used, in which case the file is updated instead.
-`,
-		RunE: deleteProperty,
-	}
-	cmdDelete.PersistentFlags().BoolVarP(&writeInplace, "inplace", "i", false, "update the yaml file inplace")
-	cmdDelete.PersistentFlags().StringVarP(&docIndex, "doc", "d", "0", "process document index number (0 based, * for all documents)")
-	return cmdDelete
-}
-
-func deleteProperty(cmd *cobra.Command, args []string) error {
-	if len(args) < 2 {
-		return errors.New("Must provide <filename> <path_to_delete>")
-	}
-	var updateCommands []yqlib.UpdateCommand = make([]yqlib.UpdateCommand, 1)
-	updateCommands[0] = yqlib.UpdateCommand{Command: "delete", Path: args[1]}
-
-	return updateDoc(args[0], updateCommands, cmd.OutOrStdout())
-}

cmd/evaluate_all_command.go

@@ -0,0 +1,104 @@
+package cmd
+
+import (
+	"errors"
+	"fmt"
+	"os"
+
+	"github.com/mikefarah/yq/v4/pkg/yqlib"
+	"github.com/spf13/cobra"
+)
+
+func createEvaluateAllCommand() *cobra.Command {
+	var cmdEvalAll = &cobra.Command{
+		Use:     "eval-all [expression] [yaml_file1]...",
+		Aliases: []string{"ea"},
+		Short:   "Loads _all_ yaml documents of _all_ yaml files and runs expression once",
+		Example: `
+# merges f2.yml into f1.yml (inplace)
+yq eval-all --inplace 'select(fileIndex == 0) * select(fileIndex == 1)' f1.yml f2.yml		
+
+# use '-' as a filename to read from STDIN
+cat file2.yml | yq ea '.a.b' file1.yml - file3.yml
+`,
+		Long: "Evaluate All:\nUseful when you need to run an expression across several yaml documents or files. Consumes more memory than eval",
+		RunE: evaluateAll,
+	}
+	return cmdEvalAll
+}
+func evaluateAll(cmd *cobra.Command, args []string) error {
+	cmd.SilenceUsage = true
+	// 0 args, read std in
+	// 1 arg, null input, process expression
+	// 1 arg, read file in sequence
+	// 2+ args, [0] = expression, file the rest
+
+	var err error
+	stat, _ := os.Stdin.Stat()
+	pipingStdIn := (stat.Mode() & os.ModeCharDevice) == 0
+
+	out := cmd.OutOrStdout()
+
+	fileInfo, _ := os.Stdout.Stat()
+
+	if forceColor || (!forceNoColor && (fileInfo.Mode()&os.ModeCharDevice) != 0) {
+		colorsEnabled = true
+	}
+
+	firstFileIndex := -1
+	if !nullInput && len(args) == 1 {
+		firstFileIndex = 0
+	} else if len(args) > 1 {
+		firstFileIndex = 1
+	}
+
+	if writeInplace && (firstFileIndex == -1) {
+		return fmt.Errorf("Write inplace flag only applicable when giving an expression and at least one file")
+	}
+
+	if writeInplace {
+		// only use colors if its forced
+		colorsEnabled = forceColor
+		writeInPlaceHandler := yqlib.NewWriteInPlaceHandler(args[firstFileIndex])
+		out, err = writeInPlaceHandler.CreateTempFile()
+		if err != nil {
+			return err
+		}
+		// need to indirectly call the function so  that completedSuccessfully is
+		// passed when we finish execution as opposed to now
+		defer func() { writeInPlaceHandler.FinishWriteInPlace(completedSuccessfully) }()
+	}
+
+	if nullInput && len(args) > 1 {
+		return errors.New("Cannot pass files in when using null-input flag")
+	}
+
+	printer := yqlib.NewPrinter(out, outputToJSON, unwrapScalar, colorsEnabled, indent, !noDocSeparators)
+
+	allAtOnceEvaluator := yqlib.NewAllAtOnceEvaluator()
+	switch len(args) {
+	case 0:
+		if pipingStdIn {
+			err = allAtOnceEvaluator.EvaluateFiles(processExpression(""), []string{"-"}, printer)
+		} else {
+			cmd.Println(cmd.UsageString())
+			return nil
+		}
+	case 1:
+		if nullInput {
+			err = yqlib.NewStreamEvaluator().EvaluateNew(processExpression(args[0]), printer)
+		} else {
+			err = allAtOnceEvaluator.EvaluateFiles(processExpression(""), []string{args[0]}, printer)
+		}
+	default:
+		err = allAtOnceEvaluator.EvaluateFiles(processExpression(args[0]), args[1:], printer)
+	}
+
+	completedSuccessfully = err == nil
+
+	if err == nil && exitStatus && !printer.PrintedAnything() {
+		return errors.New("no matches found")
+	}
+
+	return err
+}

cmd/evalute_sequence_command.go

@@ -0,0 +1,124 @@
+package cmd
+
+import (
+	"errors"
+	"fmt"
+	"os"
+
+	"github.com/mikefarah/yq/v4/pkg/yqlib"
+	"github.com/spf13/cobra"
+)
+
+func createEvaluateSequenceCommand() *cobra.Command {
+	var cmdEvalSequence = &cobra.Command{
+		Use:     "eval [expression] [yaml_file1]...",
+		Aliases: []string{"e"},
+		Short:   "Apply expression to each document in each yaml file given in sequence",
+		Example: `
+# runs the expression against each file, in series
+yq e '.a.b | length' f1.yml f2.yml 
+
+# prints out the file
+yq e sample.yaml 
+
+# use '-' as a filename to read from STDIN
+cat file2.yml | yq e '.a.b' file1.yml - file3.yml
+
+# prints a new yaml document
+yq e -n '.a.b.c = "cat"' 
+
+
+# updates file.yaml directly
+yq e '.a.b = "cool"' -i file.yaml 
+`,
+		Long: "Evaluate Sequence:\nIterate over each yaml document, apply the expression and print the results, in sequence.",
+		RunE: evaluateSequence,
+	}
+	return cmdEvalSequence
+}
+
+func processExpression(expression string) string {
+	if prettyPrint && expression == "" {
+		return `... style=""`
+	} else if prettyPrint {
+		return fmt.Sprintf("%v | ... style= \"\"", expression)
+	}
+	return expression
+}
+
+func evaluateSequence(cmd *cobra.Command, args []string) error {
+	cmd.SilenceUsage = true
+	// 0 args, read std in
+	// 1 arg, null input, process expression
+	// 1 arg, read file in sequence
+	// 2+ args, [0] = expression, file the rest
+
+	var err error
+	stat, _ := os.Stdin.Stat()
+	pipingStdIn := (stat.Mode() & os.ModeCharDevice) == 0
+
+	out := cmd.OutOrStdout()
+
+	fileInfo, _ := os.Stdout.Stat()
+
+	if forceColor || (!forceNoColor && (fileInfo.Mode()&os.ModeCharDevice) != 0) {
+		colorsEnabled = true
+	}
+
+	firstFileIndex := -1
+	if !nullInput && len(args) == 1 {
+		firstFileIndex = 0
+	} else if len(args) > 1 {
+		firstFileIndex = 1
+	}
+
+	if writeInplace && (firstFileIndex == -1) {
+		return fmt.Errorf("Write inplace flag only applicable when giving an expression and at least one file")
+	}
+
+	if writeInplace {
+		// only use colors if its forced
+		colorsEnabled = forceColor
+		writeInPlaceHandler := yqlib.NewWriteInPlaceHandler(args[firstFileIndex])
+		out, err = writeInPlaceHandler.CreateTempFile()
+		if err != nil {
+			return err
+		}
+		// need to indirectly call the function so  that completedSuccessfully is
+		// passed when we finish execution as opposed to now
+		defer func() { writeInPlaceHandler.FinishWriteInPlace(completedSuccessfully) }()
+	}
+
+	printer := yqlib.NewPrinter(out, outputToJSON, unwrapScalar, colorsEnabled, indent, !noDocSeparators)
+
+	streamEvaluator := yqlib.NewStreamEvaluator()
+
+	if nullInput && len(args) > 1 {
+		return errors.New("Cannot pass files in when using null-input flag")
+	}
+
+	switch len(args) {
+	case 0:
+		if pipingStdIn {
+			err = streamEvaluator.EvaluateFiles(processExpression(""), []string{"-"}, printer)
+		} else {
+			cmd.Println(cmd.UsageString())
+			return nil
+		}
+	case 1:
+		if nullInput {
+			err = streamEvaluator.EvaluateNew(processExpression(args[0]), printer)
+		} else {
+			err = streamEvaluator.EvaluateFiles(processExpression(""), []string{args[0]}, printer)
+		}
+	default:
+		err = streamEvaluator.EvaluateFiles(processExpression(args[0]), args[1:], printer)
+	}
+	completedSuccessfully = err == nil
+
+	if err == nil && exitStatus && !printer.PrintedAnything() {
+		return errors.New("no matches found")
+	}
+
+	return err
+}

cmd/merge.go

@@ -1,74 +0,0 @@
-package cmd
-
-import (
-	"github.com/mikefarah/yq/v3/pkg/yqlib"
-	errors "github.com/pkg/errors"
-	"github.com/spf13/cobra"
-	yaml "gopkg.in/yaml.v3"
-)
-
-func createMergeCmd() *cobra.Command {
-	var cmdMerge = &cobra.Command{
-		Use:     "merge [initial_yaml_file] [additional_yaml_file]...",
-		Aliases: []string{"m"},
-		Short:   "yq m [--inplace/-i] [--doc/-d index] [--overwrite/-x] [--append/-a] sample.yaml sample2.yaml",
-		Example: `
-yq merge things.yaml other.yaml
-yq merge --inplace things.yaml other.yaml
-yq m -i things.yaml other.yaml
-yq m --overwrite things.yaml other.yaml
-yq m -i -x things.yaml other.yaml
-yq m -i -a things.yaml other.yaml
-yq m -i --autocreate=false things.yaml other.yaml
-      `,
-		Long: `Updates the yaml file by adding/updating the path(s) and value(s) from additional yaml file(s).
-Outputs to STDOUT unless the inplace flag is used, in which case the file is updated instead.
-
-If overwrite flag is set then existing values will be overwritten using the values from each additional yaml file.
-If append flag is set then existing arrays will be merged with the arrays from each additional yaml file.
-`,
-		RunE: mergeProperties,
-	}
-	cmdMerge.PersistentFlags().BoolVarP(&writeInplace, "inplace", "i", false, "update the yaml file inplace")
-	cmdMerge.PersistentFlags().BoolVarP(&overwriteFlag, "overwrite", "x", false, "update the yaml file by overwriting existing values")
-	cmdMerge.PersistentFlags().BoolVarP(&autoCreateFlag, "autocreate", "c", true, "automatically create any missing entries")
-	cmdMerge.PersistentFlags().BoolVarP(&appendFlag, "append", "a", false, "update the yaml file by appending array values")
-	cmdMerge.PersistentFlags().StringVarP(&docIndex, "doc", "d", "0", "process document index number (0 based, * for all documents)")
-	return cmdMerge
-}
-
-/*
-* We don't deeply traverse arrays when appending a merge, instead we want to
-* append the entire array element.
- */
-func createReadFunctionForMerge() func(*yaml.Node) ([]*yqlib.NodeContext, error) {
-	return func(dataBucket *yaml.Node) ([]*yqlib.NodeContext, error) {
-		return lib.Get(dataBucket, "**", !appendFlag)
-	}
-}
-
-func mergeProperties(cmd *cobra.Command, args []string) error {
-	var updateCommands []yqlib.UpdateCommand = make([]yqlib.UpdateCommand, 0)
-
-	if len(args) < 1 {
-		return errors.New("Must provide at least 1 yaml file")
-	}
-
-	if len(args) > 1 {
-		// first generate update commands from the file
-		var filesToMerge = args[1:]
-
-		for _, fileToMerge := range filesToMerge {
-			matchingNodes, errorProcessingFile := doReadYamlFile(fileToMerge, createReadFunctionForMerge(), false, 0)
-			if errorProcessingFile != nil {
-				return errorProcessingFile
-			}
-			for _, matchingNode := range matchingNodes {
-				mergePath := lib.MergePathStackToString(matchingNode.PathStack, appendFlag)
-				updateCommands = append(updateCommands, yqlib.UpdateCommand{Command: "update", Path: mergePath, Value: matchingNode.Node, Overwrite: overwriteFlag})
-			}
-		}
-	}
-
-	return updateDoc(args[0], updateCommands, cmd.OutOrStdout())
-}

cmd/new.go

@@ -1,51 +0,0 @@
-package cmd
-
-import (
-	"github.com/mikefarah/yq/v3/pkg/yqlib"
-	"github.com/spf13/cobra"
-)
-
-func createNewCmd() *cobra.Command {
-	var cmdNew = &cobra.Command{
-		Use:     "new [path] [value]",
-		Aliases: []string{"n"},
-		Short:   "yq n [--script/-s script_file] a.b.c newValue",
-		Example: `
-yq new 'a.b.c' cat
-yq n 'a.b.c' --tag '!!str' true # force 'true' to be interpreted as a string instead of bool
-yq n 'a.b[+]' cat
-yq n -- '--key-starting-with-dash' cat # need to use '--' to stop processing arguments as flags
-yq n --script create_script.yaml
-      `,
-		Long: `Creates a new yaml w.r.t the given path and value.
-Outputs to STDOUT
-
-Create Scripts:
-Note that you can give a create script to perform more sophisticated yaml. This follows the same format as the update script.
-`,
-		RunE: newProperty,
-	}
-	cmdNew.PersistentFlags().StringVarP(&writeScript, "script", "s", "", "yaml script for creating yaml")
-	cmdNew.PersistentFlags().StringVarP(&customTag, "tag", "t", "", "set yaml tag (e.g. !!int)")
-	return cmdNew
-}
-
-func newProperty(cmd *cobra.Command, args []string) error {
-	var updateCommands, updateCommandsError = readUpdateCommands(args, 2, "Must provide <path_to_update> <value>")
-	if updateCommandsError != nil {
-		return updateCommandsError
-	}
-	newNode := lib.New(updateCommands[0].Path)
-
-	for _, updateCommand := range updateCommands {
-
-		errorUpdating := lib.Update(&newNode, updateCommand, true)
-
-		if errorUpdating != nil {
-			return errorUpdating
-		}
-	}
-
-	var encoder = yqlib.NewYamlEncoder(cmd.OutOrStdout(), indent, colorsEnabled)
-	return encoder.Encode(&newNode)
-}

cmd/prefix.go

@@ -1,50 +0,0 @@
-package cmd
-
-import (
-	"github.com/mikefarah/yq/v3/pkg/yqlib"
-	errors "github.com/pkg/errors"
-	"github.com/spf13/cobra"
-	yaml "gopkg.in/yaml.v3"
-)
-
-func createPrefixCmd() *cobra.Command {
-	var cmdPrefix = &cobra.Command{
-		Use:     "prefix [yaml_file] [path]",
-		Aliases: []string{"p"},
-		Short:   "yq p [--inplace/-i] [--doc/-d index] sample.yaml a.b.c",
-		Example: `
-yq prefix things.yaml 'a.b.c'
-yq prefix --inplace things.yaml 'a.b.c'
-yq prefix --inplace -- things.yaml '--key-starting-with-dash' # need to use '--' to stop processing arguments as flags
-yq p -i things.yaml 'a.b.c'
-yq p --doc 2 things.yaml 'a.b.d'
-yq p -d2 things.yaml 'a.b.d'
-      `,
-		Long: `Prefixes w.r.t to the yaml file at the given path.
-Outputs to STDOUT unless the inplace flag is used, in which case the file is updated instead.
-`,
-		RunE: prefixProperty,
-	}
-	cmdPrefix.PersistentFlags().BoolVarP(&writeInplace, "inplace", "i", false, "update the yaml file inplace")
-	cmdPrefix.PersistentFlags().StringVarP(&docIndex, "doc", "d", "0", "process document index number (0 based, * for all documents)")
-	return cmdPrefix
-}
-
-func prefixProperty(cmd *cobra.Command, args []string) error {
-
-	if len(args) < 2 {
-		return errors.New("Must provide <filename> <prefixed_path>")
-	}
-	updateCommand := yqlib.UpdateCommand{Command: "update", Path: args[1]}
-	log.Debugf("args %v", args)
-
-	var updateAll, docIndexInt, errorParsingDocIndex = parseDocumentIndex()
-	if errorParsingDocIndex != nil {
-		return errorParsingDocIndex
-	}
-
-	var updateData = func(dataBucket *yaml.Node, currentIndex int) error {
-		return prefixDocument(updateAll, docIndexInt, currentIndex, dataBucket, updateCommand)
-	}
-	return readAndUpdate(cmd.OutOrStdout(), args[0], updateData)
-}

cmd/read.go

@@ -1,59 +0,0 @@
-package cmd
-
-import (
-	errors "github.com/pkg/errors"
-	"github.com/spf13/cobra"
-)
-
-func createReadCmd() *cobra.Command {
-	var cmdRead = &cobra.Command{
-		Use:     "read [yaml_file] [path_expression]",
-		Aliases: []string{"r"},
-		Short:   "yq r [--printMode/-p pv] sample.yaml 'b.e(name==fr*).value'",
-		Example: `
-yq read things.yaml 'a.b.c'
-yq r - 'a.b.c' # reads from stdin
-yq r things.yaml 'a.*.c'
-yq r things.yaml 'a.**.c' # deep splat
-yq r things.yaml 'a.(child.subchild==co*).c'
-yq r -d1 things.yaml 'a.array[0].blah'
-yq r things.yaml 'a.array[*].blah'
-yq r -- things.yaml '--key-starting-with-dashes.blah'
-      `,
-		Long: "Outputs the value of the given path in the yaml file to STDOUT",
-		RunE: readProperty,
-	}
-	cmdRead.PersistentFlags().StringVarP(&docIndex, "doc", "d", "0", "process document index number (0 based, * for all documents)")
-	cmdRead.PersistentFlags().StringVarP(&printMode, "printMode", "p", "v", "print mode (v (values, default), p (paths), pv (path and value pairs)")
-	cmdRead.PersistentFlags().StringVarP(&defaultValue, "defaultValue", "D", "", "default value printed when there are no results")
-	cmdRead.PersistentFlags().BoolVarP(&printLength, "length", "l", false, "print length of results")
-	cmdRead.PersistentFlags().BoolVarP(&collectIntoArray, "collect", "c", false, "collect results into array")
-	cmdRead.PersistentFlags().BoolVarP(&unwrapScalar, "unwrapScalar", "", true, "unwrap scalar, print the value with no quotes, colors or comments")
-	cmdRead.PersistentFlags().BoolVarP(&stripComments, "stripComments", "", false, "print yaml without any comments")
-	cmdRead.PersistentFlags().BoolVarP(&explodeAnchors, "explodeAnchors", "X", false, "explode anchors")
-	return cmdRead
-}
-
-func readProperty(cmd *cobra.Command, args []string) error {
-	var path = ""
-
-	if len(args) < 1 {
-		return errors.New("Must provide filename")
-	} else if len(args) > 1 {
-		path = args[1]
-	}
-
-	var updateAll, docIndexInt, errorParsingDocIndex = parseDocumentIndex()
-	if errorParsingDocIndex != nil {
-		return errorParsingDocIndex
-	}
-
-	matchingNodes, errorReadingStream := readYamlFile(args[0], path, updateAll, docIndexInt)
-
-	if errorReadingStream != nil {
-		return errorReadingStream
-	}
-	out := cmd.OutOrStdout()
-
-	return printResults(matchingNodes, out)
-}

cmd/root.go

@@ -18,10 +18,11 @@ func New() *cobra.Command {
 				return nil
 			}
 			cmd.Println(cmd.UsageString())
-
 			return nil
+
 		},
 		PersistentPreRun: func(cmd *cobra.Command, args []string) {
+			cmd.SetOut(cmd.OutOrStdout())
 			var format = logging.MustStringFormatter(
 				`%{color}%{time:15:04:05} %{shortfunc} [%{level:.4s}]%{color:reset} %{message}`,
 			)
@@ -39,23 +40,23 @@ func New() *cobra.Command {
 	}
 
 	rootCmd.PersistentFlags().BoolVarP(&verbose, "verbose", "v", false, "verbose mode")
-	rootCmd.PersistentFlags().BoolVarP(&outputToJSON, "tojson", "j", false, "output as json. By default it prints a json document in one line, use the prettyPrint flag to print a formatted doc.")
-	rootCmd.PersistentFlags().BoolVarP(&prettyPrint, "prettyPrint", "P", false, "pretty print")
+	rootCmd.PersistentFlags().BoolVarP(&outputToJSON, "tojson", "j", false, "output as json. Set indent to 0 to print json in one line.")
+	rootCmd.PersistentFlags().BoolVarP(&nullInput, "null-input", "n", false, "Don't read input, simply evaluate the expression given. Useful for creating yaml docs from scratch.")
+	rootCmd.PersistentFlags().BoolVarP(&noDocSeparators, "no-doc", "N", false, "Don't print document separators (---)")
+
 	rootCmd.PersistentFlags().IntVarP(&indent, "indent", "I", 2, "sets indent level for output")
 	rootCmd.Flags().BoolVarP(&version, "version", "V", false, "Print version information and quit")
-	rootCmd.PersistentFlags().BoolVarP(&colorsEnabled, "colors", "C", false, "print with colors")
+	rootCmd.PersistentFlags().BoolVarP(&writeInplace, "inplace", "i", false, "update the yaml file inplace of first yaml file given.")
+	rootCmd.PersistentFlags().BoolVarP(&unwrapScalar, "unwrapScalar", "", true, "unwrap scalar, print the value with no quotes, colors or comments")
+	rootCmd.PersistentFlags().BoolVarP(&prettyPrint, "prettyPrint", "P", false, "pretty print, shorthand for '... style = \"\"'")
+	rootCmd.PersistentFlags().BoolVarP(&exitStatus, "exit-status", "e", false, "set exit status if there are no matches or null or false is returned")
 
+	rootCmd.PersistentFlags().BoolVarP(&forceColor, "colors", "C", false, "force print with colors")
+	rootCmd.PersistentFlags().BoolVarP(&forceNoColor, "no-colors", "M", false, "force print with no colors")
 	rootCmd.AddCommand(
-		createReadCmd(),
-		createCompareCmd(),
-		createValidateCmd(),
-		createWriteCmd(),
-		createPrefixCmd(),
-		createDeleteCmd(),
-		createNewCmd(),
-		createMergeCmd(),
+		createEvaluateSequenceCommand(),
+		createEvaluateAllCommand(),
+		completionCmd,
 	)
-	rootCmd.SetOutput(os.Stdout)
-
 	return rootCmd
 }

cmd/shell-completion.go

@@ -0,0 +1,61 @@
+package cmd
+
+import (
+	"os"
+
+	"github.com/spf13/cobra"
+)
+
+var completionCmd = &cobra.Command{
+	Use:   "shell-completion [bash|zsh|fish|powershell]",
+	Short: "Generate completion script",
+	Long: `To load completions:
+
+Bash:
+
+$ source <(yq shell-completion bash)
+
+# To load completions for each session, execute once:
+Linux:
+  $ yq shell-completion bash > /etc/bash_completion.d/yq
+MacOS:
+  $ yq shell-completion bash > /usr/local/etc/bash_completion.d/yq
+
+Zsh:
+
+# If shell completion is not already enabled in your environment you will need
+# to enable it.  You can execute the following once:
+
+$ echo "autoload -U compinit; compinit" >> ~/.zshrc
+
+# To load completions for each session, execute once:
+$ yq shell-completion zsh > "${fpath[1]}/_yq"
+
+# You will need to start a new shell for this setup to take effect.
+
+Fish:
+
+$ yq shell-completion fish | source
+
+# To load completions for each session, execute once:
+$ yq shell-completion fish > ~/.config/fish/completions/yq.fish
+`,
+	DisableFlagsInUseLine: true,
+	ValidArgs:             []string{"bash", "zsh", "fish", "powershell"},
+	Args:                  cobra.ExactValidArgs(1),
+	RunE: func(cmd *cobra.Command, args []string) error {
+		var err error = nil
+		switch args[0] {
+		case "bash":
+			err = cmd.Root().GenBashCompletion(os.Stdout)
+		case "zsh":
+			err = cmd.Root().GenZshCompletion(os.Stdout)
+		case "fish":
+			err = cmd.Root().GenFishCompletion(os.Stdout, true)
+		case "powershell":
+			err = cmd.Root().GenPowerShellCompletion(os.Stdout)
+		}
+		return err
+
+	},
+}

cmd/utils.go

@@ -1,528 +0,0 @@
-package cmd
-
-import (
-	"bufio"
-	"fmt"
-	"io"
-	"io/ioutil"
-	"os"
-	"strconv"
-
-	"github.com/mikefarah/yq/v3/pkg/yqlib"
-	errors "github.com/pkg/errors"
-	yaml "gopkg.in/yaml.v3"
-)
-
-type readDataFn func(dataBucket *yaml.Node) ([]*yqlib.NodeContext, error)
-
-func createReadFunction(path string) func(*yaml.Node) ([]*yqlib.NodeContext, error) {
-	return func(dataBucket *yaml.Node) ([]*yqlib.NodeContext, error) {
-		return lib.Get(dataBucket, path, true)
-	}
-}
-
-func readYamlFile(filename string, path string, updateAll bool, docIndexInt int) ([]*yqlib.NodeContext, error) {
-	return doReadYamlFile(filename, createReadFunction(path), updateAll, docIndexInt)
-}
-
-func doReadYamlFile(filename string, readFn readDataFn, updateAll bool, docIndexInt int) ([]*yqlib.NodeContext, error) {
-	var matchingNodes []*yqlib.NodeContext
-
-	var currentIndex = 0
-	var errorReadingStream = readStream(filename, func(decoder *yaml.Decoder) error {
-		for {
-			var dataBucket yaml.Node
-			errorReading := decoder.Decode(&dataBucket)
-
-			if errorReading == io.EOF {
-				return handleEOF(updateAll, docIndexInt, currentIndex)
-			} else if errorReading != nil {
-				return errorReading
-			}
-
-			var errorParsing error
-			matchingNodes, errorParsing = appendDocument(matchingNodes, dataBucket, readFn, updateAll, docIndexInt, currentIndex)
-			if errorParsing != nil {
-				return errorParsing
-			}
-			if !updateAll && currentIndex == docIndexInt {
-				log.Debug("all done")
-				return nil
-			}
-			currentIndex = currentIndex + 1
-		}
-	})
-	return matchingNodes, errorReadingStream
-}
-
-func handleEOF(updateAll bool, docIndexInt int, currentIndex int) error {
-	log.Debugf("done %v / %v", currentIndex, docIndexInt)
-	if !updateAll && currentIndex <= docIndexInt && docIndexInt != 0 {
-		return fmt.Errorf("Could not process document index %v as there are only %v document(s)", docIndex, currentIndex)
-	}
-	return nil
-}
-
-func appendDocument(originalMatchingNodes []*yqlib.NodeContext, dataBucket yaml.Node, readFn readDataFn, updateAll bool, docIndexInt int, currentIndex int) ([]*yqlib.NodeContext, error) {
-	log.Debugf("processing document %v - requested index %v", currentIndex, docIndexInt)
-	yqlib.DebugNode(&dataBucket)
-	if !updateAll && currentIndex != docIndexInt {
-		return originalMatchingNodes, nil
-	}
-	log.Debugf("reading in document %v", currentIndex)
-	matchingNodes, errorParsing := readFn(&dataBucket)
-	if errorParsing != nil {
-		return nil, errors.Wrapf(errorParsing, "Error reading path in document index %v", currentIndex)
-	}
-	return append(originalMatchingNodes, matchingNodes...), nil
-}
-
-func lengthOf(node *yaml.Node) int {
-	kindToCheck := node.Kind
-	if node.Kind == yaml.DocumentNode && len(node.Content) == 1 {
-		log.Debugf("length of document node, calculating length of child")
-		kindToCheck = node.Content[0].Kind
-	}
-	switch kindToCheck {
-	case yaml.ScalarNode:
-		return len(node.Value)
-	case yaml.MappingNode:
-		return len(node.Content) / 2
-	default:
-		return len(node.Content)
-	}
-}
-
-// transforms node before printing, if required
-func transformNode(node *yaml.Node) *yaml.Node {
-	if printLength {
-		return &yaml.Node{Kind: yaml.ScalarNode, Value: fmt.Sprintf("%v", lengthOf(node))}
-	}
-	return node
-}
-
-func printNode(node *yaml.Node, writer io.Writer) error {
-	var encoder yqlib.Encoder
-	if node.Kind == yaml.ScalarNode && unwrapScalar && !outputToJSON {
-		return writeString(writer, node.Value+"\n")
-	}
-	if outputToJSON {
-		encoder = yqlib.NewJsonEncoder(writer, prettyPrint, indent)
-	} else {
-		encoder = yqlib.NewYamlEncoder(writer, indent, colorsEnabled)
-	}
-	return encoder.Encode(node)
-}
-
-func removeComments(matchingNodes []*yqlib.NodeContext) {
-	for _, nodeContext := range matchingNodes {
-		removeCommentOfNode(nodeContext.Node)
-	}
-}
-
-func removeCommentOfNode(node *yaml.Node) {
-	node.HeadComment = ""
-	node.LineComment = ""
-	node.FootComment = ""
-
-	for _, child := range node.Content {
-		removeCommentOfNode(child)
-	}
-}
-
-func setStyle(matchingNodes []*yqlib.NodeContext, style yaml.Style) {
-	for _, nodeContext := range matchingNodes {
-		updateStyleOfNode(nodeContext.Node, style)
-	}
-}
-
-func updateStyleOfNode(node *yaml.Node, style yaml.Style) {
-	node.Style = style
-
-	for _, child := range node.Content {
-		updateStyleOfNode(child, style)
-	}
-}
-
-func writeString(writer io.Writer, txt string) error {
-	_, errorWriting := writer.Write([]byte(txt))
-	return errorWriting
-}
-
-func explode(matchingNodes []*yqlib.NodeContext) error {
-	log.Debug("exploding nodes")
-	for _, nodeContext := range matchingNodes {
-		var targetNode = yaml.Node{Kind: nodeContext.Node.Kind}
-		explodedNodes, errorRetrieving := lib.Get(nodeContext.Node, "**", true)
-		if errorRetrieving != nil {
-			return errorRetrieving
-		}
-		for _, matchingNode := range explodedNodes {
-			mergePath := lib.MergePathStackToString(matchingNode.PathStack, appendFlag)
-			updateCommand := yqlib.UpdateCommand{Command: "update", Path: mergePath, Value: matchingNode.Node, Overwrite: overwriteFlag}
-			errorUpdating := lib.Update(&targetNode, updateCommand, true)
-			if errorUpdating != nil {
-				return errorUpdating
-			}
-		}
-		nodeContext.Node = &targetNode
-	}
-	log.Debug("done exploding nodes")
-	return nil
-}
-
-func printResults(matchingNodes []*yqlib.NodeContext, writer io.Writer) error {
-	if prettyPrint {
-		setStyle(matchingNodes, 0)
-	}
-
-	if stripComments {
-		removeComments(matchingNodes)
-	}
-
-	//always explode anchors when printing json
-	if explodeAnchors || outputToJSON {
-		errorExploding := explode(matchingNodes)
-		if errorExploding != nil {
-			return errorExploding
-		}
-	}
-
-	bufferedWriter := bufio.NewWriter(writer)
-	defer safelyFlush(bufferedWriter)
-
-	if len(matchingNodes) == 0 {
-		log.Debug("no matching results, nothing to print")
-		if defaultValue != "" {
-			return writeString(bufferedWriter, defaultValue)
-		}
-		return nil
-	}
-	var errorWriting error
-
-	var arrayCollection = yaml.Node{Kind: yaml.SequenceNode}
-
-	for _, mappedDoc := range matchingNodes {
-		switch printMode {
-		case "p":
-			errorWriting = writeString(bufferedWriter, lib.PathStackToString(mappedDoc.PathStack)+"\n")
-			if errorWriting != nil {
-				return errorWriting
-			}
-		case "pv", "vp":
-			// put it into a node and print that.
-			var parentNode = yaml.Node{Kind: yaml.MappingNode}
-			parentNode.Content = make([]*yaml.Node, 2)
-			parentNode.Content[0] = &yaml.Node{Kind: yaml.ScalarNode, Value: lib.PathStackToString(mappedDoc.PathStack)}
-			parentNode.Content[1] = transformNode(mappedDoc.Node)
-			if collectIntoArray {
-				arrayCollection.Content = append(arrayCollection.Content, &parentNode)
-			} else if err := printNode(&parentNode, bufferedWriter); err != nil {
-				return err
-			}
-		default:
-			if collectIntoArray {
-				arrayCollection.Content = append(arrayCollection.Content, mappedDoc.Node)
-			} else if err := printNode(transformNode(mappedDoc.Node), bufferedWriter); err != nil {
-				return err
-			}
-		}
-	}
-
-	if collectIntoArray {
-		if err := printNode(transformNode(&arrayCollection), bufferedWriter); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func parseDocumentIndex() (bool, int, error) {
-	if docIndex == "*" {
-		return true, -1, nil
-	}
-	docIndexInt64, err := strconv.ParseInt(docIndex, 10, 32)
-	if err != nil {
-		return false, -1, errors.Wrapf(err, "Document index %v is not a integer or *", docIndex)
-	}
-	return false, int(docIndexInt64), nil
-}
-
-type updateDataFn func(dataBucket *yaml.Node, currentIndex int) error
-
-func isNullDocument(dataBucket *yaml.Node) bool {
-	return dataBucket.Kind == yaml.DocumentNode && (len(dataBucket.Content) == 0 ||
-		dataBucket.Content[0].Kind == yaml.ScalarNode && dataBucket.Content[0].Tag == "!!null")
-}
-
-func mapYamlDecoder(updateData updateDataFn, encoder yqlib.Encoder) yamlDecoderFn {
-	return func(decoder *yaml.Decoder) error {
-		var dataBucket yaml.Node
-		var errorReading error
-		var errorWriting error
-		var errorUpdating error
-		var currentIndex = 0
-
-		var updateAll, docIndexInt, errorParsingDocIndex = parseDocumentIndex()
-		if errorParsingDocIndex != nil {
-			return errorParsingDocIndex
-		}
-
-		for {
-			log.Debugf("Read doc %v", currentIndex)
-			errorReading = decoder.Decode(&dataBucket)
-
-			if errorReading == io.EOF && docIndexInt == 0 && currentIndex == 0 {
-				//empty document, lets just make one
-				dataBucket = yaml.Node{Kind: yaml.DocumentNode, Content: make([]*yaml.Node, 1)}
-				child := yaml.Node{Kind: yaml.MappingNode}
-				dataBucket.Content[0] = &child
-			} else if isNullDocument(&dataBucket) && (updateAll || docIndexInt == currentIndex) {
-				child := yaml.Node{Kind: yaml.MappingNode}
-				dataBucket.Content[0] = &child
-			} else if errorReading == io.EOF {
-				if !updateAll && currentIndex <= docIndexInt {
-					return fmt.Errorf("asked to process document index %v but there are only %v document(s)", docIndex, currentIndex)
-				}
-				return nil
-			} else if errorReading != nil {
-				return errors.Wrapf(errorReading, "Error reading document at index %v, %v", currentIndex, errorReading)
-			}
-			errorUpdating = updateData(&dataBucket, currentIndex)
-			if errorUpdating != nil {
-				return errors.Wrapf(errorUpdating, "Error updating document at index %v", currentIndex)
-			}
-
-			if prettyPrint {
-				updateStyleOfNode(&dataBucket, 0)
-			}
-
-			errorWriting = encoder.Encode(&dataBucket)
-
-			if errorWriting != nil {
-				return errors.Wrapf(errorWriting, "Error writing document at index %v, %v", currentIndex, errorWriting)
-			}
-			currentIndex = currentIndex + 1
-		}
-	}
-}
-
-func prefixDocument(updateAll bool, docIndexInt int, currentIndex int, dataBucket *yaml.Node, updateCommand yqlib.UpdateCommand) error {
-	if updateAll || currentIndex == docIndexInt {
-		log.Debugf("Prefixing document %v", currentIndex)
-		yqlib.DebugNode(dataBucket)
-		updateCommand.Value = dataBucket.Content[0]
-		dataBucket.Content = make([]*yaml.Node, 1)
-
-		newNode := lib.New(updateCommand.Path)
-		dataBucket.Content[0] = &newNode
-
-		errorUpdating := lib.Update(dataBucket, updateCommand, true)
-		if errorUpdating != nil {
-			return errorUpdating
-		}
-	}
-	return nil
-}
-
-func updateDoc(inputFile string, updateCommands []yqlib.UpdateCommand, writer io.Writer) error {
-	var updateAll, docIndexInt, errorParsingDocIndex = parseDocumentIndex()
-	if errorParsingDocIndex != nil {
-		return errorParsingDocIndex
-	}
-
-	var updateData = func(dataBucket *yaml.Node, currentIndex int) error {
-		if updateAll || currentIndex == docIndexInt {
-			log.Debugf("Updating doc %v", currentIndex)
-			for _, updateCommand := range updateCommands {
-				log.Debugf("Processing update to Path %v", updateCommand.Path)
-				errorUpdating := lib.Update(dataBucket, updateCommand, autoCreateFlag)
-				if errorUpdating != nil {
-					return errorUpdating
-				}
-			}
-		}
-		return nil
-	}
-	return readAndUpdate(writer, inputFile, updateData)
-}
-
-func readAndUpdate(stdOut io.Writer, inputFile string, updateData updateDataFn) error {
-	var destination io.Writer
-	var destinationName string
-	var completedSuccessfully = false
-	if writeInplace {
-		info, err := os.Stat(inputFile)
-		if err != nil {
-			return err
-		}
-		tempFile, err := ioutil.TempFile("", "temp")
-		if err != nil {
-			return err
-		}
-		destinationName = tempFile.Name()
-		err = os.Chmod(destinationName, info.Mode())
-		if err != nil {
-			return err
-		}
-		destination = tempFile
-		defer func() {
-			safelyCloseFile(tempFile)
-			if completedSuccessfully {
-				safelyRenameFile(tempFile.Name(), inputFile)
-			}
-		}()
-	} else {
-		destination = stdOut
-		destinationName = "Stdout"
-	}
-
-	log.Debugf("Writing to %v from %v", destinationName, inputFile)
-
-	bufferedWriter := bufio.NewWriter(destination)
-	defer safelyFlush(bufferedWriter)
-
-	var encoder yqlib.Encoder
-	if outputToJSON {
-		encoder = yqlib.NewJsonEncoder(bufferedWriter, prettyPrint, indent)
-	} else {
-		encoder = yqlib.NewYamlEncoder(bufferedWriter, indent, colorsEnabled)
-	}
-
-	var errorProcessing = readStream(inputFile, mapYamlDecoder(updateData, encoder))
-	completedSuccessfully = errorProcessing == nil
-	return errorProcessing
-}
-
-type updateCommandParsed struct {
-	Command string
-	Path    string
-	Value   yaml.Node
-}
-
-func readUpdateCommands(args []string, expectedArgs int, badArgsMessage string) ([]yqlib.UpdateCommand, error) {
-	var updateCommands []yqlib.UpdateCommand = make([]yqlib.UpdateCommand, 0)
-	if writeScript != "" {
-		var parsedCommands = make([]updateCommandParsed, 0)
-
-		err := readData(writeScript, 0, &parsedCommands)
-
-		if err != nil && err != io.EOF {
-			return nil, err
-		}
-
-		log.Debugf("Read write commands file '%v'", parsedCommands)
-		for index := range parsedCommands {
-			parsedCommand := parsedCommands[index]
-			updateCommand := yqlib.UpdateCommand{Command: parsedCommand.Command, Path: parsedCommand.Path, Value: &parsedCommand.Value, Overwrite: true}
-			updateCommands = append(updateCommands, updateCommand)
-		}
-
-		log.Debugf("Read write commands file '%v'", updateCommands)
-	} else if sourceYamlFile != "" && len(args) == expectedArgs-1 {
-		log.Debugf("Reading value from %v", sourceYamlFile)
-		var value yaml.Node
-		err := readData(sourceYamlFile, 0, &value)
-		if err != nil && err != io.EOF {
-			return nil, err
-		}
-		log.Debug("args %v", args[expectedArgs-2])
-		updateCommands = make([]yqlib.UpdateCommand, 1)
-		updateCommands[0] = yqlib.UpdateCommand{Command: "update", Path: args[expectedArgs-2], Value: value.Content[0], Overwrite: true}
-
-	} else if len(args) < expectedArgs {
-		return nil, errors.New(badArgsMessage)
-	} else {
-		updateCommands = make([]yqlib.UpdateCommand, 1)
-		log.Debug("args %v", args)
-		log.Debug("path %v", args[expectedArgs-2])
-		log.Debug("Value %v", args[expectedArgs-1])
-		updateCommands[0] = yqlib.UpdateCommand{Command: "update", Path: args[expectedArgs-2], Value: valueParser.Parse(args[expectedArgs-1], customTag), Overwrite: true}
-	}
-	return updateCommands, nil
-}
-
-func safelyRenameFile(from string, to string) {
-	if renameError := os.Rename(from, to); renameError != nil {
-		log.Debugf("Error renaming from %v to %v, attempting to copy contents", from, to)
-		log.Debug(renameError.Error())
-		// can't do this rename when running in docker to a file targeted in a mounted volume,
-		// so gracefully degrade to copying the entire contents.
-		if copyError := copyFileContents(from, to); copyError != nil {
-			log.Errorf("Failed copying from %v to %v", from, to)
-			log.Error(copyError.Error())
-		} else {
-			removeErr := os.Remove(from)
-			if removeErr != nil {
-				log.Errorf("failed removing original file: %s", from)
-			}
-		}
-	}
-}
-
-// thanks https://stackoverflow.com/questions/21060945/simple-way-to-copy-a-file-in-golang
-func copyFileContents(src, dst string) (err error) {
-	in, err := os.Open(src) // nolint gosec
-	if err != nil {
-		return err
-	}
-	defer safelyCloseFile(in)
-	out, err := os.Create(dst)
-	if err != nil {
-		return err
-	}
-	defer safelyCloseFile(out)
-	if _, err = io.Copy(out, in); err != nil {
-		return err
-	}
-	return out.Sync()
-}
-
-func safelyFlush(writer *bufio.Writer) {
-	if err := writer.Flush(); err != nil {
-		log.Error("Error flushing writer!")
-		log.Error(err.Error())
-	}
-
-}
-func safelyCloseFile(file *os.File) {
-	err := file.Close()
-	if err != nil {
-		log.Error("Error closing file!")
-		log.Error(err.Error())
-	}
-}
-
-type yamlDecoderFn func(*yaml.Decoder) error
-
-func readStream(filename string, yamlDecoder yamlDecoderFn) error {
-	if filename == "" {
-		return errors.New("Must provide filename")
-	}
-
-	var stream io.Reader
-	if filename == "-" {
-		stream = bufio.NewReader(os.Stdin)
-	} else {
-		file, err := os.Open(filename) // nolint gosec
-		if err != nil {
-			return err
-		}
-		defer safelyCloseFile(file)
-		stream = file
-	}
-	return yamlDecoder(yaml.NewDecoder(stream))
-}
-
-func readData(filename string, indexToRead int, parsedData interface{}) error {
-	return readStream(filename, func(decoder *yaml.Decoder) error {
-		for currentIndex := 0; currentIndex < indexToRead; currentIndex++ {
-			errorSkipping := decoder.Decode(parsedData)
-			if errorSkipping != nil {
-				return errors.Wrapf(errorSkipping, "Error processing document at index %v, %v", currentIndex, errorSkipping)
-			}
-		}
-		return decoder.Decode(parsedData)
-	})
-}

cmd/validate.go

@@ -1,37 +0,0 @@
-package cmd
-
-import (
-	errors "github.com/pkg/errors"
-	"github.com/spf13/cobra"
-)
-
-func createValidateCmd() *cobra.Command {
-	var cmdRead = &cobra.Command{
-		Use:     "validate [yaml_file]",
-		Aliases: []string{"v"},
-		Short:   "yq v sample.yaml",
-		Example: `
-yq v - # reads from stdin
-`,
-		RunE:          validateProperty,
-		SilenceUsage:  true,
-		SilenceErrors: true,
-	}
-	cmdRead.PersistentFlags().StringVarP(&docIndex, "doc", "d", "0", "process document index number (0 based, * for all documents)")
-	return cmdRead
-}
-
-func validateProperty(cmd *cobra.Command, args []string) error {
-	if len(args) < 1 {
-		return errors.New("Must provide filename")
-	}
-
-	var updateAll, docIndexInt, errorParsingDocIndex = parseDocumentIndex()
-	if errorParsingDocIndex != nil {
-		return errorParsingDocIndex
-	}
-
-	_, errorReadingStream := readYamlFile(args[0], "", updateAll, docIndexInt)
-
-	return errorReadingStream
-}

cmd/version.go

@@ -11,7 +11,7 @@ var (
 	GitDescribe string
 
 	// Version is main version number that is being run at the moment.
-	Version = "3.2.2"
+	Version = "4.9.3"
 
 	// VersionPrerelease is a pre-release marker for the version. If this is "" (empty string)
 	// then it means that it is a final release. Otherwise, this is a pre-release

cmd/write.go

@@ -1,58 +0,0 @@
-package cmd
-
-import (
-	"github.com/spf13/cobra"
-)
-
-func createWriteCmd() *cobra.Command {
-	var cmdWrite = &cobra.Command{
-		Use:     "write [yaml_file] [path_expression] [value]",
-		Aliases: []string{"w"},
-		Short:   "yq w [--inplace/-i] [--script/-s script_file] [--doc/-d index] sample.yaml 'b.e(name==fr*).value' newValue",
-		Example: `
-yq write things.yaml 'a.b.c' true
-yq write things.yaml 'a.*.c' true
-yq write things.yaml 'a.**' true
-yq write things.yaml 'a.(child.subchild==co*).c' true
-yq write things.yaml 'a.b.c' --tag '!!str' true # force 'true' to be interpreted as a string instead of bool
-yq write things.yaml 'a.b.c' --tag '!!float' 3
-yq write --inplace -- things.yaml 'a.b.c' '--cat' # need to use '--' to stop processing arguments as flags
-yq w -i things.yaml 'a.b.c' cat
-yq w -i -s update_script.yaml things.yaml
-yq w things.yaml 'a.b.d[+]' foo # appends a new node to the 'd' array
-yq w --doc 2 things.yaml 'a.b.d[+]' foo # updates the 3rd document of the yaml file
-      `,
-		Long: `Updates the yaml file w.r.t the given path and value.
-Outputs to STDOUT unless the inplace flag is used, in which case the file is updated instead.
-
-Append value to array adds the value to the end of array.
-
-Update Scripts:
-Note that you can give an update script to perform more sophisticated update. Update script
-format is list of update commands (update or delete) like so:
----
-- command: update
-  path: b.c
-  value:
-    #great
-    things: frog # wow!
-- command: delete
-  path: b.d
-`,
-		RunE: writeProperty,
-	}
-	cmdWrite.PersistentFlags().BoolVarP(&writeInplace, "inplace", "i", false, "update the yaml file inplace")
-	cmdWrite.PersistentFlags().StringVarP(&writeScript, "script", "s", "", "yaml script for updating yaml")
-	cmdWrite.PersistentFlags().StringVarP(&sourceYamlFile, "from", "f", "", "yaml file for updating yaml (as-is)")
-	cmdWrite.PersistentFlags().StringVarP(&customTag, "tag", "t", "", "set yaml tag (e.g. !!int)")
-	cmdWrite.PersistentFlags().StringVarP(&docIndex, "doc", "d", "0", "process document index number (0 based, * for all documents)")
-	return cmdWrite
-}
-
-func writeProperty(cmd *cobra.Command, args []string) error {
-	var updateCommands, updateCommandsError = readUpdateCommands(args, 3, "Must provide <filename> <path_to_update> <value>")
-	if updateCommandsError != nil {
-		return updateCommandsError
-	}
-	return updateDoc(args[0], updateCommands, cmd.OutOrStdout())
-}

compare.sh

@@ -1,13 +0,0 @@
-GREEN='\033[0;32m'
-NC='\033[0m'
-
-echo "${GREEN}---Old---${NC}"
-yq $@ > /tmp/yq-old-output
-cat /tmp/yq-old-output
-
-echo "${GREEN}---New---${NC}"
-./yq $@ > /tmp/yq-new-output
-cat /tmp/yq-new-output
-
-echo "${GREEN}---Diff---${NC}"
-colordiff /tmp/yq-old-output /tmp/yq-new-output

debian/changelog

@@ -1,3 +1,20 @@
+yq (3.3.2) focal; urgency=medium
+
+  * Bug fix: existStatus bug (#459)
+  * Automatically makes a os temp directory if it does not exist (#461)
+
+ -- Roberto Mier Escandon <rmescandon@gmail.com>  Fri, 07 Aug 2020 18:53:01 +0200
+
+yq (3.3-0) focal; urgency=medium
+
+  * You can control string styles (quotes) using the new --style flag
+  * String values now always have quotes when outputting to json
+  * Negative array indices now traverse the array backwards
+  * Added a --stripComments flag to print yaml without any comments
+  * Bumped go to version 1.14
+
+ -- Roberto Mier Escandon <rmescandon@gmail.com>  Thu, 30 Apr 2020 20:45:44 +0200
+
 yq (3.1-2) eoan; urgency=medium
 
   * Bug fix: yq 3 was removing empty inline-style objects and arrays (#355)

debian/files

@@ -1 +0,0 @@
-yq_3.1-2_source.buildinfo devel optional

docs/404.html

@@ -1,268 +0,0 @@
-
-
-
-
-<!doctype html>
-<html lang="en" class="no-js">
-  <head>
-    
-      <meta charset="utf-8">
-      <meta name="viewport" content="width=device-width,initial-scale=1">
-      <meta http-equiv="x-ua-compatible" content="ie=edge">
-      
-      
-      
-      
-        <meta name="lang:clipboard.copy" content="Copy to clipboard">
-      
-        <meta name="lang:clipboard.copied" content="Copied to clipboard">
-      
-        <meta name="lang:search.language" content="en">
-      
-        <meta name="lang:search.pipeline.stopwords" content="True">
-      
-        <meta name="lang:search.pipeline.trimmer" content="True">
-      
-        <meta name="lang:search.result.none" content="No matching documents">
-      
-        <meta name="lang:search.result.one" content="1 matching document">
-      
-        <meta name="lang:search.result.other" content="# matching documents">
-      
-        <meta name="lang:search.tokenizer" content="[\s\-]+">
-      
-      <link rel="shortcut icon" href="/assets/images/favicon.png">
-      <meta name="generator" content="mkdocs-1.0.4, mkdocs-material-4.6.0">
-    
-    
-      
-        <title>Yq</title>
-      
-    
-    
-      <link rel="stylesheet" href="/assets/stylesheets/application.1b62728e.css">
-      
-      
-    
-    
-      <script src="/assets/javascripts/modernizr.268332fc.js"></script>
-    
-    
-      
-        <link href="https://fonts.gstatic.com" rel="preconnect" crossorigin>
-        <link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Roboto:300,400,400i,700%7CRoboto+Mono&display=fallback">
-        <style>body,input{font-family:"Roboto","Helvetica Neue",Helvetica,Arial,sans-serif}code,kbd,pre{font-family:"Roboto Mono","Courier New",Courier,monospace}</style>
-      
-    
-    <link rel="stylesheet" href="/assets/fonts/material-icons.css">
-    
-    
-    
-      
-    
-    
-  </head>
-  
-    <body dir="ltr">
-  
-    <svg class="md-svg">
-      <defs>
-        
-        
-          <svg xmlns="http://www.w3.org/2000/svg" width="416" height="448" viewBox="0 0 416 448" id="__github"><path fill="currentColor" d="M160 304q0 10-3.125 20.5t-10.75 19T128 352t-18.125-8.5-10.75-19T96 304t3.125-20.5 10.75-19T128 256t18.125 8.5 10.75 19T160 304zm160 0q0 10-3.125 20.5t-10.75 19T288 352t-18.125-8.5-10.75-19T256 304t3.125-20.5 10.75-19T288 256t18.125 8.5 10.75 19T320 304zm40 0q0-30-17.25-51T296 232q-10.25 0-48.75 5.25Q229.5 240 208 240t-39.25-2.75Q130.75 232 120 232q-29.5 0-46.75 21T56 304q0 22 8 38.375t20.25 25.75 30.5 15 35 7.375 37.25 1.75h42q20.5 0 37.25-1.75t35-7.375 30.5-15 20.25-25.75T360 304zm56-44q0 51.75-15.25 82.75-9.5 19.25-26.375 33.25t-35.25 21.5-42.5 11.875-42.875 5.5T212 416q-19.5 0-35.5-.75t-36.875-3.125-38.125-7.5-34.25-12.875T37 371.5t-21.5-28.75Q0 312 0 260q0-59.25 34-99-6.75-20.5-6.75-42.5 0-29 12.75-54.5 27 0 47.5 9.875t47.25 30.875Q171.5 96 212 96q37 0 70 8 26.25-20.5 46.75-30.25T376 64q12.75 25.5 12.75 54.5 0 21.75-6.75 42 34 40 34 99.5z"/></svg>
-        
-      </defs>
-    </svg>
-    <input class="md-toggle" data-md-toggle="drawer" type="checkbox" id="__drawer" autocomplete="off">
-    <input class="md-toggle" data-md-toggle="search" type="checkbox" id="__search" autocomplete="off">
-    <label class="md-overlay" data-md-component="overlay" for="__drawer"></label>
-    
-    
-      <header class="md-header" data-md-component="header">
-  <nav class="md-header-nav md-grid">
-    <div class="md-flex">
-      <div class="md-flex__cell md-flex__cell--shrink">
-        <a href="/." title="Yq" class="md-header-nav__button md-logo">
-          
-            <i class="md-icon"></i>
-          
-        </a>
-      </div>
-      <div class="md-flex__cell md-flex__cell--shrink">
-        <label class="md-icon md-icon--menu md-header-nav__button" for="__drawer"></label>
-      </div>
-      <div class="md-flex__cell md-flex__cell--stretch">
-        <div class="md-flex__ellipsis md-header-nav__title" data-md-component="title">
-          
-            <span class="md-header-nav__topic">
-              Yq
-            </span>
-            <span class="md-header-nav__topic">
-              
-                
-              
-            </span>
-          
-        </div>
-      </div>
-      <div class="md-flex__cell md-flex__cell--shrink">
-        
-          <label class="md-icon md-icon--search md-header-nav__button" for="__search"></label>
-          
-<div class="md-search" data-md-component="search" role="dialog">
-  <label class="md-search__overlay" for="__search"></label>
-  <div class="md-search__inner" role="search">
-    <form class="md-search__form" name="search">
-      <input type="text" class="md-search__input" name="query" placeholder="Search" autocapitalize="off" autocorrect="off" autocomplete="off" spellcheck="false" data-md-component="query" data-md-state="active">
-      <label class="md-icon md-search__icon" for="__search"></label>
-      <button type="reset" class="md-icon md-search__icon" data-md-component="reset" tabindex="-1">
-        &#xE5CD;
-      </button>
-    </form>
-    <div class="md-search__output">
-      <div class="md-search__scrollwrap" data-md-scrollfix>
-        <div class="md-search-result" data-md-component="result">
-          <div class="md-search-result__meta">
-            Type to start searching
-          </div>
-          <ol class="md-search-result__list"></ol>
-        </div>
-      </div>
-    </div>
-  </div>
-</div>
-        
-      </div>
-      
-        <div class="md-flex__cell md-flex__cell--shrink">
-          <div class="md-header-nav__source">
-            
-
-
-  
-
-<a href="https://github.com/mikefarah/yq/" title="Go to repository" class="md-source" data-md-source="github">
-  
-    <div class="md-source__icon">
-      <svg viewBox="0 0 24 24" width="24" height="24">
-        <use xlink:href="#__github" width="24" height="24"></use>
-      </svg>
-    </div>
-  
-  <div class="md-source__repository">
-    mikefarah/yq
-  </div>
-</a>
-          </div>
-        </div>
-      
-    </div>
-  </nav>
-</header>
-    
-    <div class="md-container">
-      
-        
-      
-      
-      <main class="md-main" role="main">
-        <div class="md-main__inner md-grid" data-md-component="container">
-          
-            
-              <div class="md-sidebar md-sidebar--primary" data-md-component="navigation">
-                <div class="md-sidebar__scrollwrap">
-                  <div class="md-sidebar__inner">
-                    <nav class="md-nav md-nav--primary" data-md-level="0">
-  <label class="md-nav__title md-nav__title--site" for="__drawer">
-    <a href="/." title="Yq" class="md-nav__button md-logo">
-      
-        <i class="md-icon"></i>
-      
-    </a>
-    Yq
-  </label>
-  
-    <div class="md-nav__source">
-      
-
-
-  
-
-<a href="https://github.com/mikefarah/yq/" title="Go to repository" class="md-source" data-md-source="github">
-  
-    <div class="md-source__icon">
-      <svg viewBox="0 0 24 24" width="24" height="24">
-        <use xlink:href="#__github" width="24" height="24"></use>
-      </svg>
-    </div>
-  
-  <div class="md-source__repository">
-    mikefarah/yq
-  </div>
-</a>
-    </div>
-  
-  <ul class="md-nav__list" data-md-scrollfix>
-    
-      
-      
-      
-
-
-  <li class="md-nav__item">
-    <a href="/." title="Home" class="md-nav__link">
-      Home
-    </a>
-  </li>
-
-    
-  </ul>
-</nav>
-                  </div>
-                </div>
-              </div>
-            
-            
-          
-          <div class="md-content">
-            <article class="md-content__inner md-typeset">
-              
-  <h1>404 - Not found</h1>
-
-              
-                
-
-
-              
-            </article>
-          </div>
-        </div>
-      </main>
-      
-        
-<footer class="md-footer">
-  
-  <div class="md-footer-meta md-typeset">
-    <div class="md-footer-meta__inner md-grid">
-      <div class="md-footer-copyright">
-        
-        powered by
-        <a href="https://www.mkdocs.org">MkDocs</a>
-        and
-        <a href="https://squidfunk.github.io/mkdocs-material/">
-          Material for MkDocs</a>
-      </div>
-      
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-</footer>
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-    
-      <script src="/assets/javascripts/application.808e90bb.js"></script>
-      
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-      
-    
-  </body>
-</html>

docs/assets/fonts/material-icons.css

@@ -1,13 +0,0 @@
-/*!
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not
- * use this file except in compliance with the License. You may obtain a copy
- * of the License at:
- *
- *   http://www.apache.org/licenses/LICENSE-2.0
- *
- * UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING, SOFTWARE
- * DISTRIBUTED UNDER THE LICENSE IS DISTRIBUTED ON AN "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
- * SEE THE LICENSE FOR THE SPECIFIC LANGUAGE GOVERNING PERMISSIONS AND
- * LIMITATIONS UNDER THE LICENSE.
- */@font-face{font-family:"Material Icons";font-style:normal;font-weight:400;src:local("Material Icons"),local("MaterialIcons-Regular"),url("specimen/MaterialIcons-Regular.woff2") format("woff2"),url("specimen/MaterialIcons-Regular.woff") format("woff"),url("specimen/MaterialIcons-Regular.ttf") format("truetype")}

docs/assets/images/icons/bitbucket.1b09e088.svg

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docs/assets/images/icons/github.f0b8504a.svg

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docs/assets/images/icons/gitlab.6dd19c00.svg

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docs/assets/javascripts/lunr/lunr.da.js

@@ -1,17 +0,0 @@
-/*!
- * Lunr languages, `Danish` language
- * https://github.com/MihaiValentin/lunr-languages
- *
- * Copyright 2014, Mihai Valentin
- * http://www.mozilla.org/MPL/
- */
-/*!
- * based on
- * Snowball JavaScript Library v0.3
- * http://code.google.com/p/urim/
- * http://snowball.tartarus.org/
- *
- * Copyright 2010, Oleg Mazko
- * http://www.mozilla.org/MPL/
- */
-!function(e,r){"function"==typeof define&&define.amd?define(r):"object"==typeof exports?module.exports=r():r()(e.lunr)}(this,function(){return function(e){if(void 0===e)throw new Error("Lunr is not present. Please include / require Lunr before this script.");if(void 0===e.stemmerSupport)throw new Error("Lunr stemmer support is not present. Please include / require Lunr stemmer support before this script.");var r,m,i;e.da=function(){this.pipeline.reset(),this.pipeline.add(e.da.trimmer,e.da.stopWordFilter,e.da.stemmer),this.searchPipeline&&(this.searchPipeline.reset(),this.searchPipeline.add(e.da.stemmer))},e.da.wordCharacters="A-Za-zªºÀ-ÖØ-öø-ʸˠ-ˤᴀ-ᴥᴬ-ᵜᵢ-ᵥᵫ-ᵷᵹ-ᶾḀ-ỿⁱⁿₐ-ₜKÅℲⅎⅠ-ↈⱠ-ⱿꜢ-ꞇꞋ-ꞭꞰ-ꞷꟷ-ꟿꬰ-ꭚꭜ-ꭤff-stＡ-Ｚａ-ｚ",e.da.trimmer=e.trimmerSupport.generateTrimmer(e.da.wordCharacters),e.Pipeline.registerFunction(e.da.trimmer,"trimmer-da"),e.da.stemmer=(r=e.stemmerSupport.Among,m=e.stemmerSupport.SnowballProgram,i=new function(){var i,t,n,s=[new r("hed",-1,1),new r("ethed",0,1),new r("ered",-1,1),new r("e",-1,1),new r("erede",3,1),new r("ende",3,1),new r("erende",5,1),new r("ene",3,1),new r("erne",3,1),new r("ere",3,1),new r("en",-1,1),new r("heden",10,1),new r("eren",10,1),new r("er",-1,1),new r("heder",13,1),new r("erer",13,1),new r("s",-1,2),new r("heds",16,1),new r("es",16,1),new r("endes",18,1),new r("erendes",19,1),new r("enes",18,1),new r("ernes",18,1),new r("eres",18,1),new r("ens",16,1),new r("hedens",24,1),new r("erens",24,1),new r("ers",16,1),new r("ets",16,1),new r("erets",28,1),new r("et",-1,1),new r("eret",30,1)],o=[new r("gd",-1,-1),new r("dt",-1,-1),new r("gt",-1,-1),new r("kt",-1,-1)],a=[new r("ig",-1,1),new r("lig",0,1),new r("elig",1,1),new r("els",-1,1),new r("løst",-1,2)],d=[17,65,16,1,0,0,0,0,0,0,0,0,0,0,0,0,48,0,128],u=[239,254,42,3,0,0,0,0,0,0,0,0,0,0,0,0,16],c=new m;function l(){var e,r=c.limit-c.cursor;c.cursor>=t&&(e=c.limit_backward,c.limit_backward=t,c.ket=c.cursor,c.find_among_b(o,4)?(c.bra=c.cursor,c.limit_backward=e,c.cursor=c.limit-r,c.cursor>c.limit_backward&&(c.cursor--,c.bra=c.cursor,c.slice_del())):c.limit_backward=e)}this.setCurrent=function(e){c.setCurrent(e)},this.getCurrent=function(){return c.getCurrent()},this.stem=function(){var e,r=c.cursor;return function(){var e,r=c.cursor+3;if(t=c.limit,0<=r&&r<=c.limit){for(i=r;;){if(e=c.cursor,c.in_grouping(d,97,248)){c.cursor=e;break}if((c.cursor=e)>=c.limit)return;c.cursor++}for(;!c.out_grouping(d,97,248);){if(c.cursor>=c.limit)return;c.cursor++}(t=c.cursor)<i&&(t=i)}}(),c.limit_backward=r,c.cursor=c.limit,function(){var e,r;if(c.cursor>=t&&(r=c.limit_backward,c.limit_backward=t,c.ket=c.cursor,e=c.find_among_b(s,32),c.limit_backward=r,e))switch(c.bra=c.cursor,e){case 1:c.slice_del();break;case 2:c.in_grouping_b(u,97,229)&&c.slice_del()}}(),c.cursor=c.limit,l(),c.cursor=c.limit,function(){var e,r,i,n=c.limit-c.cursor;if(c.ket=c.cursor,c.eq_s_b(2,"st")&&(c.bra=c.cursor,c.eq_s_b(2,"ig")&&c.slice_del()),c.cursor=c.limit-n,c.cursor>=t&&(r=c.limit_backward,c.limit_backward=t,c.ket=c.cursor,e=c.find_among_b(a,5),c.limit_backward=r,e))switch(c.bra=c.cursor,e){case 1:c.slice_del(),i=c.limit-c.cursor,l(),c.cursor=c.limit-i;break;case 2:c.slice_from("løs")}}(),c.cursor=c.limit,c.cursor>=t&&(e=c.limit_backward,c.limit_backward=t,c.ket=c.cursor,c.out_grouping_b(d,97,248)?(c.bra=c.cursor,n=c.slice_to(n),c.limit_backward=e,c.eq_v_b(n)&&c.slice_del()):c.limit_backward=e),!0}},function(e){return"function"==typeof e.update?e.update(function(e){return i.setCurrent(e),i.stem(),i.getCurrent()}):(i.setCurrent(e),i.stem(),i.getCurrent())}),e.Pipeline.registerFunction(e.da.stemmer,"stemmer-da"),e.da.stopWordFilter=e.generateStopWordFilter("ad af alle alt anden at blev blive bliver da de dem den denne der deres det dette dig din disse dog du efter eller en end er et for fra ham han hans har havde have hende hendes her hos hun hvad hvis hvor i ikke ind jeg jer jo kunne man mange med meget men mig min mine mit mod ned noget nogle nu når og også om op os over på selv sig sin sine sit skal skulle som sådan thi til ud under var vi vil ville vor være været".split(" ")),e.Pipeline.registerFunction(e.da.stopWordFilter,"stopWordFilter-da")}});

docs/assets/javascripts/lunr/lunr.ja.js

@@ -1,17 +0,0 @@
-/*!
- * Lunr languages, `Japanese` language
- * https://github.com/MihaiValentin/lunr-languages
- *
- * Copyright 2014, Chad Liu
- * http://www.mozilla.org/MPL/
- */
-/*!
- * based on
- * Snowball JavaScript Library v0.3
- * http://code.google.com/p/urim/
- * http://snowball.tartarus.org/
- *
- * Copyright 2010, Oleg Mazko
- * http://www.mozilla.org/MPL/
- */
-!function(e,r){"function"==typeof define&&define.amd?define(r):"object"==typeof exports?module.exports=r():r()(e.lunr)}(this,function(){return function(m){if(void 0===m)throw new Error("Lunr is not present. Please include / require Lunr before this script.");if(void 0===m.stemmerSupport)throw new Error("Lunr stemmer support is not present. Please include / require Lunr stemmer support before this script.");var l="2"==m.version[0];m.ja=function(){this.pipeline.reset(),this.pipeline.add(m.ja.trimmer,m.ja.stopWordFilter,m.ja.stemmer),l?this.tokenizer=m.ja.tokenizer:(m.tokenizer&&(m.tokenizer=m.ja.tokenizer),this.tokenizerFn&&(this.tokenizerFn=m.ja.tokenizer))};var j=new m.TinySegmenter;m.ja.tokenizer=function(e){var r,t,i,n,o,s,p,a,u;if(!arguments.length||null==e||null==e)return[];if(Array.isArray(e))return e.map(function(e){return l?new m.Token(e.toLowerCase()):e.toLowerCase()});for(r=(t=e.toString().toLowerCase().replace(/^\s+/,"")).length-1;0<=r;r--)if(/\S/.test(t.charAt(r))){t=t.substring(0,r+1);break}for(o=[],i=t.length,p=a=0;a<=i;a++)if(s=a-p,t.charAt(a).match(/\s/)||a==i){if(0<s)for(n=j.segment(t.slice(p,a)).filter(function(e){return!!e}),u=p,r=0;r<n.length;r++)l?o.push(new m.Token(n[r],{position:[u,n[r].length],index:o.length})):o.push(n[r]),u+=n[r].length;p=a+1}return o},m.ja.stemmer=function(e){return e},m.Pipeline.registerFunction(m.ja.stemmer,"stemmer-ja"),m.ja.wordCharacters="一二三四五六七八九十百千万億兆一-龠々〆ヵヶぁ-んァ-ヴーｱ-ﾝﾞa-zA-Zａ-ｚＡ-Ｚ0-9０-９",m.ja.trimmer=m.trimmerSupport.generateTrimmer(m.ja.wordCharacters),m.Pipeline.registerFunction(m.ja.trimmer,"trimmer-ja"),m.ja.stopWordFilter=m.generateStopWordFilter("これ それ あれ この その あの ここ そこ あそこ こちら どこ だれ なに なん 何 私 貴方 貴方方 我々 私達 あの人 あのかた 彼女 彼 です あります おります います は が の に を で え から まで より も どの と し それで しかし".split(" ")),m.Pipeline.registerFunction(m.ja.stopWordFilter,"stopWordFilter-ja"),m.jp=m.ja,m.Pipeline.registerFunction(m.jp.stemmer,"stemmer-jp"),m.Pipeline.registerFunction(m.jp.trimmer,"trimmer-jp"),m.Pipeline.registerFunction(m.jp.stopWordFilter,"stopWordFilter-jp")}});

docs/assets/javascripts/lunr/lunr.jp.js

@@ -1 +0,0 @@
-module.exports=require("./lunr.ja");

docs/assets/javascripts/lunr/lunr.multi.js

@@ -1 +0,0 @@
-!function(e,t){"function"==typeof define&&define.amd?define(t):"object"==typeof exports?module.exports=t():t()(e.lunr)}(this,function(){return function(o){o.multiLanguage=function(){for(var e=Array.prototype.slice.call(arguments),t=e.join("-"),i="",r=[],n=[],s=0;s<e.length;++s)"en"==e[s]?(i+="\\w",r.unshift(o.stopWordFilter),r.push(o.stemmer),n.push(o.stemmer)):(i+=o[e[s]].wordCharacters,o[e[s]].stopWordFilter&&r.unshift(o[e[s]].stopWordFilter),o[e[s]].stemmer&&(r.push(o[e[s]].stemmer),n.push(o[e[s]].stemmer)));var p=o.trimmerSupport.generateTrimmer(i);return o.Pipeline.registerFunction(p,"lunr-multi-trimmer-"+t),r.unshift(p),function(){this.pipeline.reset(),this.pipeline.add.apply(this.pipeline,r),this.searchPipeline&&(this.searchPipeline.reset(),this.searchPipeline.add.apply(this.searchPipeline,n))}}}});

docs/assets/javascripts/lunr/lunr.no.js

@@ -1,17 +0,0 @@
-/*!
- * Lunr languages, `Norwegian` language
- * https://github.com/MihaiValentin/lunr-languages
- *
- * Copyright 2014, Mihai Valentin
- * http://www.mozilla.org/MPL/
- */
-/*!
- * based on
- * Snowball JavaScript Library v0.3
- * http://code.google.com/p/urim/
- * http://snowball.tartarus.org/
- *
- * Copyright 2010, Oleg Mazko
- * http://www.mozilla.org/MPL/
- */
-!function(e,r){"function"==typeof define&&define.amd?define(r):"object"==typeof exports?module.exports=r():r()(e.lunr)}(this,function(){return function(e){if(void 0===e)throw new Error("Lunr is not present. Please include / require Lunr before this script.");if(void 0===e.stemmerSupport)throw new Error("Lunr stemmer support is not present. Please include / require Lunr stemmer support before this script.");var r,n,i;e.no=function(){this.pipeline.reset(),this.pipeline.add(e.no.trimmer,e.no.stopWordFilter,e.no.stemmer),this.searchPipeline&&(this.searchPipeline.reset(),this.searchPipeline.add(e.no.stemmer))},e.no.wordCharacters="A-Za-zªºÀ-ÖØ-öø-ʸˠ-ˤᴀ-ᴥᴬ-ᵜᵢ-ᵥᵫ-ᵷᵹ-ᶾḀ-ỿⁱⁿₐ-ₜKÅℲⅎⅠ-ↈⱠ-ⱿꜢ-ꞇꞋ-ꞭꞰ-ꞷꟷ-ꟿꬰ-ꭚꭜ-ꭤff-stＡ-Ｚａ-ｚ",e.no.trimmer=e.trimmerSupport.generateTrimmer(e.no.wordCharacters),e.Pipeline.registerFunction(e.no.trimmer,"trimmer-no"),e.no.stemmer=(r=e.stemmerSupport.Among,n=e.stemmerSupport.SnowballProgram,i=new function(){var o,s,a=[new r("a",-1,1),new r("e",-1,1),new r("ede",1,1),new r("ande",1,1),new r("ende",1,1),new r("ane",1,1),new r("ene",1,1),new r("hetene",6,1),new r("erte",1,3),new r("en",-1,1),new r("heten",9,1),new r("ar",-1,1),new r("er",-1,1),new r("heter",12,1),new r("s",-1,2),new r("as",14,1),new r("es",14,1),new r("edes",16,1),new r("endes",16,1),new r("enes",16,1),new r("hetenes",19,1),new r("ens",14,1),new r("hetens",21,1),new r("ers",14,1),new r("ets",14,1),new r("et",-1,1),new r("het",25,1),new r("ert",-1,3),new r("ast",-1,1)],m=[new r("dt",-1,-1),new r("vt",-1,-1)],l=[new r("leg",-1,1),new r("eleg",0,1),new r("ig",-1,1),new r("eig",2,1),new r("lig",2,1),new r("elig",4,1),new r("els",-1,1),new r("lov",-1,1),new r("elov",7,1),new r("slov",7,1),new r("hetslov",9,1)],u=[17,65,16,1,0,0,0,0,0,0,0,0,0,0,0,0,48,0,128],d=[119,125,149,1],c=new n;this.setCurrent=function(e){c.setCurrent(e)},this.getCurrent=function(){return c.getCurrent()},this.stem=function(){var e,r,n,i,t=c.cursor;return function(){var e,r=c.cursor+3;if(s=c.limit,0<=r||r<=c.limit){for(o=r;;){if(e=c.cursor,c.in_grouping(u,97,248)){c.cursor=e;break}if(e>=c.limit)return;c.cursor=e+1}for(;!c.out_grouping(u,97,248);){if(c.cursor>=c.limit)return;c.cursor++}(s=c.cursor)<o&&(s=o)}}(),c.limit_backward=t,c.cursor=c.limit,function(){var e,r,n;if(c.cursor>=s&&(r=c.limit_backward,c.limit_backward=s,c.ket=c.cursor,e=c.find_among_b(a,29),c.limit_backward=r,e))switch(c.bra=c.cursor,e){case 1:c.slice_del();break;case 2:n=c.limit-c.cursor,c.in_grouping_b(d,98,122)?c.slice_del():(c.cursor=c.limit-n,c.eq_s_b(1,"k")&&c.out_grouping_b(u,97,248)&&c.slice_del());break;case 3:c.slice_from("er")}}(),c.cursor=c.limit,r=c.limit-c.cursor,c.cursor>=s&&(e=c.limit_backward,c.limit_backward=s,c.ket=c.cursor,c.find_among_b(m,2)?(c.bra=c.cursor,c.limit_backward=e,c.cursor=c.limit-r,c.cursor>c.limit_backward&&(c.cursor--,c.bra=c.cursor,c.slice_del())):c.limit_backward=e),c.cursor=c.limit,c.cursor>=s&&(i=c.limit_backward,c.limit_backward=s,c.ket=c.cursor,(n=c.find_among_b(l,11))?(c.bra=c.cursor,c.limit_backward=i,1==n&&c.slice_del()):c.limit_backward=i),!0}},function(e){return"function"==typeof e.update?e.update(function(e){return i.setCurrent(e),i.stem(),i.getCurrent()}):(i.setCurrent(e),i.stem(),i.getCurrent())}),e.Pipeline.registerFunction(e.no.stemmer,"stemmer-no"),e.no.stopWordFilter=e.generateStopWordFilter("alle at av bare begge ble blei bli blir blitt både båe da de deg dei deim deira deires dem den denne der dere deres det dette di din disse ditt du dykk dykkar då eg ein eit eitt eller elles en enn er et ett etter for fordi fra før ha hadde han hans har hennar henne hennes her hjå ho hoe honom hoss hossen hun hva hvem hver hvilke hvilken hvis hvor hvordan hvorfor i ikke ikkje ikkje ingen ingi inkje inn inni ja jeg kan kom korleis korso kun kunne kva kvar kvarhelst kven kvi kvifor man mange me med medan meg meget mellom men mi min mine mitt mot mykje ned no noe noen noka noko nokon nokor nokre nå når og også om opp oss over på samme seg selv si si sia sidan siden sin sine sitt sjøl skal skulle slik so som som somme somt så sånn til um upp ut uten var vart varte ved vere verte vi vil ville vore vors vort vår være være vært å".split(" ")),e.Pipeline.registerFunction(e.no.stopWordFilter,"stopWordFilter-no")}});

docs/assets/javascripts/lunr/lunr.stemmer.support.js

@@ -1,9 +0,0 @@
-/*!
- * Snowball JavaScript Library v0.3
- * http://code.google.com/p/urim/
- * http://snowball.tartarus.org/
- *
- * Copyright 2010, Oleg Mazko
- * http://www.mozilla.org/MPL/
- */
-!function(r,t){"function"==typeof define&&define.amd?define(t):"object"==typeof exports?module.exports=t():t()(r.lunr)}(this,function(){return function(r){r.stemmerSupport={Among:function(r,t,i,s){if(this.toCharArray=function(r){for(var t=r.length,i=new Array(t),s=0;s<t;s++)i[s]=r.charCodeAt(s);return i},!r&&""!=r||!t&&0!=t||!i)throw"Bad Among initialisation: s:"+r+", substring_i: "+t+", result: "+i;this.s_size=r.length,this.s=this.toCharArray(r),this.substring_i=t,this.result=i,this.method=s},SnowballProgram:function(){var b;return{bra:0,ket:0,limit:0,cursor:0,limit_backward:0,setCurrent:function(r){b=r,this.cursor=0,this.limit=r.length,this.limit_backward=0,this.bra=this.cursor,this.ket=this.limit},getCurrent:function(){var r=b;return b=null,r},in_grouping:function(r,t,i){if(this.cursor<this.limit){var s=b.charCodeAt(this.cursor);if(s<=i&&t<=s&&r[(s-=t)>>3]&1<<(7&s))return this.cursor++,!0}return!1},in_grouping_b:function(r,t,i){if(this.cursor>this.limit_backward){var s=b.charCodeAt(this.cursor-1);if(s<=i&&t<=s&&r[(s-=t)>>3]&1<<(7&s))return this.cursor--,!0}return!1},out_grouping:function(r,t,i){if(this.cursor<this.limit){var s=b.charCodeAt(this.cursor);if(i<s||s<t)return this.cursor++,!0;if(!(r[(s-=t)>>3]&1<<(7&s)))return this.cursor++,!0}return!1},out_grouping_b:function(r,t,i){if(this.cursor>this.limit_backward){var s=b.charCodeAt(this.cursor-1);if(i<s||s<t)return this.cursor--,!0;if(!(r[(s-=t)>>3]&1<<(7&s)))return this.cursor--,!0}return!1},eq_s:function(r,t){if(this.limit-this.cursor<r)return!1;for(var i=0;i<r;i++)if(b.charCodeAt(this.cursor+i)!=t.charCodeAt(i))return!1;return this.cursor+=r,!0},eq_s_b:function(r,t){if(this.cursor-this.limit_backward<r)return!1;for(var i=0;i<r;i++)if(b.charCodeAt(this.cursor-r+i)!=t.charCodeAt(i))return!1;return this.cursor-=r,!0},find_among:function(r,t){for(var i=0,s=t,e=this.cursor,n=this.limit,u=0,o=0,h=!1;;){for(var c=i+(s-i>>1),a=0,f=u<o?u:o,l=r[c],_=f;_<l.s_size;_++){if(e+f==n){a=-1;break}if(a=b.charCodeAt(e+f)-l.s[_])break;f++}if(a<0?(s=c,o=f):(i=c,u=f),s-i<=1){if(0<i||s==i||h)break;h=!0}}for(;;){if(u>=(l=r[i]).s_size){if(this.cursor=e+l.s_size,!l.method)return l.result;var m=l.method();if(this.cursor=e+l.s_size,m)return l.result}if((i=l.substring_i)<0)return 0}},find_among_b:function(r,t){for(var i=0,s=t,e=this.cursor,n=this.limit_backward,u=0,o=0,h=!1;;){for(var c=i+(s-i>>1),a=0,f=u<o?u:o,l=(_=r[c]).s_size-1-f;0<=l;l--){if(e-f==n){a=-1;break}if(a=b.charCodeAt(e-1-f)-_.s[l])break;f++}if(a<0?(s=c,o=f):(i=c,u=f),s-i<=1){if(0<i||s==i||h)break;h=!0}}for(;;){var _;if(u>=(_=r[i]).s_size){if(this.cursor=e-_.s_size,!_.method)return _.result;var m=_.method();if(this.cursor=e-_.s_size,m)return _.result}if((i=_.substring_i)<0)return 0}},replace_s:function(r,t,i){var s=i.length-(t-r);return b=b.substring(0,r)+i+b.substring(t),this.limit+=s,this.cursor>=t?this.cursor+=s:this.cursor>r&&(this.cursor=r),s},slice_check:function(){if(this.bra<0||this.bra>this.ket||this.ket>this.limit||this.limit>b.length)throw"faulty slice operation"},slice_from:function(r){this.slice_check(),this.replace_s(this.bra,this.ket,r)},slice_del:function(){this.slice_from("")},insert:function(r,t,i){var s=this.replace_s(r,t,i);r<=this.bra&&(this.bra+=s),r<=this.ket&&(this.ket+=s)},slice_to:function(){return this.slice_check(),b.substring(this.bra,this.ket)},eq_v_b:function(r){return this.eq_s_b(r.length,r)}}}},r.trimmerSupport={generateTrimmer:function(r){var t=new RegExp("^[^"+r+"]+"),i=new RegExp("[^"+r+"]+$");return function(r){return"function"==typeof r.update?r.update(function(r){return r.replace(t,"").replace(i,"")}):r.replace(t,"").replace(i,"")}}}}});

docs/assets/javascripts/lunr/lunr.sv.js

@@ -1,17 +0,0 @@
-/*!
- * Lunr languages, `Swedish` language
- * https://github.com/MihaiValentin/lunr-languages
- *
- * Copyright 2014, Mihai Valentin
- * http://www.mozilla.org/MPL/
- */
-/*!
- * based on
- * Snowball JavaScript Library v0.3
- * http://code.google.com/p/urim/
- * http://snowball.tartarus.org/
- *
- * Copyright 2010, Oleg Mazko
- * http://www.mozilla.org/MPL/
- */
-!function(e,r){"function"==typeof define&&define.amd?define(r):"object"==typeof exports?module.exports=r():r()(e.lunr)}(this,function(){return function(e){if(void 0===e)throw new Error("Lunr is not present. Please include / require Lunr before this script.");if(void 0===e.stemmerSupport)throw new Error("Lunr stemmer support is not present. Please include / require Lunr stemmer support before this script.");var r,l,n;e.sv=function(){this.pipeline.reset(),this.pipeline.add(e.sv.trimmer,e.sv.stopWordFilter,e.sv.stemmer),this.searchPipeline&&(this.searchPipeline.reset(),this.searchPipeline.add(e.sv.stemmer))},e.sv.wordCharacters="A-Za-zªºÀ-ÖØ-öø-ʸˠ-ˤᴀ-ᴥᴬ-ᵜᵢ-ᵥᵫ-ᵷᵹ-ᶾḀ-ỿⁱⁿₐ-ₜKÅℲⅎⅠ-ↈⱠ-ⱿꜢ-ꞇꞋ-ꞭꞰ-ꞷꟷ-ꟿꬰ-ꭚꭜ-ꭤff-stＡ-Ｚａ-ｚ",e.sv.trimmer=e.trimmerSupport.generateTrimmer(e.sv.wordCharacters),e.Pipeline.registerFunction(e.sv.trimmer,"trimmer-sv"),e.sv.stemmer=(r=e.stemmerSupport.Among,l=e.stemmerSupport.SnowballProgram,n=new function(){var n,t,i=[new r("a",-1,1),new r("arna",0,1),new r("erna",0,1),new r("heterna",2,1),new r("orna",0,1),new r("ad",-1,1),new r("e",-1,1),new r("ade",6,1),new r("ande",6,1),new r("arne",6,1),new r("are",6,1),new r("aste",6,1),new r("en",-1,1),new r("anden",12,1),new r("aren",12,1),new r("heten",12,1),new r("ern",-1,1),new r("ar",-1,1),new r("er",-1,1),new r("heter",18,1),new r("or",-1,1),new r("s",-1,2),new r("as",21,1),new r("arnas",22,1),new r("ernas",22,1),new r("ornas",22,1),new r("es",21,1),new r("ades",26,1),new r("andes",26,1),new r("ens",21,1),new r("arens",29,1),new r("hetens",29,1),new r("erns",21,1),new r("at",-1,1),new r("andet",-1,1),new r("het",-1,1),new r("ast",-1,1)],s=[new r("dd",-1,-1),new r("gd",-1,-1),new r("nn",-1,-1),new r("dt",-1,-1),new r("gt",-1,-1),new r("kt",-1,-1),new r("tt",-1,-1)],a=[new r("ig",-1,1),new r("lig",0,1),new r("els",-1,1),new r("fullt",-1,3),new r("löst",-1,2)],o=[17,65,16,1,0,0,0,0,0,0,0,0,0,0,0,0,24,0,32],u=[119,127,149],m=new l;this.setCurrent=function(e){m.setCurrent(e)},this.getCurrent=function(){return m.getCurrent()},this.stem=function(){var e,r=m.cursor;return function(){var e,r=m.cursor+3;if(t=m.limit,0<=r||r<=m.limit){for(n=r;;){if(e=m.cursor,m.in_grouping(o,97,246)){m.cursor=e;break}if(m.cursor=e,m.cursor>=m.limit)return;m.cursor++}for(;!m.out_grouping(o,97,246);){if(m.cursor>=m.limit)return;m.cursor++}(t=m.cursor)<n&&(t=n)}}(),m.limit_backward=r,m.cursor=m.limit,function(){var e,r=m.limit_backward;if(m.cursor>=t&&(m.limit_backward=t,m.cursor=m.limit,m.ket=m.cursor,e=m.find_among_b(i,37),m.limit_backward=r,e))switch(m.bra=m.cursor,e){case 1:m.slice_del();break;case 2:m.in_grouping_b(u,98,121)&&m.slice_del()}}(),m.cursor=m.limit,e=m.limit_backward,m.cursor>=t&&(m.limit_backward=t,m.cursor=m.limit,m.find_among_b(s,7)&&(m.cursor=m.limit,m.ket=m.cursor,m.cursor>m.limit_backward&&(m.bra=--m.cursor,m.slice_del())),m.limit_backward=e),m.cursor=m.limit,function(){var e,r;if(m.cursor>=t){if(r=m.limit_backward,m.limit_backward=t,m.cursor=m.limit,m.ket=m.cursor,e=m.find_among_b(a,5))switch(m.bra=m.cursor,e){case 1:m.slice_del();break;case 2:m.slice_from("lös");break;case 3:m.slice_from("full")}m.limit_backward=r}}(),!0}},function(e){return"function"==typeof e.update?e.update(function(e){return n.setCurrent(e),n.stem(),n.getCurrent()}):(n.setCurrent(e),n.stem(),n.getCurrent())}),e.Pipeline.registerFunction(e.sv.stemmer,"stemmer-sv"),e.sv.stopWordFilter=e.generateStopWordFilter("alla allt att av blev bli blir blivit de dem den denna deras dess dessa det detta dig din dina ditt du där då efter ej eller en er era ert ett från för ha hade han hans har henne hennes hon honom hur här i icke ingen inom inte jag ju kan kunde man med mellan men mig min mina mitt mot mycket ni nu när någon något några och om oss på samma sedan sig sin sina sitta själv skulle som så sådan sådana sådant till under upp ut utan vad var vara varför varit varje vars vart vem vi vid vilka vilkas vilken vilket vår våra vårt än är åt över".split(" ")),e.Pipeline.registerFunction(e.sv.stopWordFilter,"stopWordFilter-sv")}});

docs/assets/javascripts/lunr/lunr.th.js

@@ -1,17 +0,0 @@
-/*!
- * Lunr languages, `Thai` language
- * https://github.com/MihaiValentin/lunr-languages
- *
- * Copyright 2017, Keerati Thiwanruk
- * http://www.mozilla.org/MPL/
- */
-/*!
- * based on
- * Snowball JavaScript Library v0.3
- * http://code.google.com/p/urim/
- * http://snowball.tartarus.org/
- *
- * Copyright 2010, Oleg Mazko
- * http://www.mozilla.org/MPL/
- */
-!function(e,r){"function"==typeof define&&define.amd?define(r):"object"==typeof exports?module.exports=r():r()(e.lunr)}(this,function(){return function(t){if(void 0===t)throw new Error("Lunr is not present. Please include / require Lunr before this script.");if(void 0===t.stemmerSupport)throw new Error("Lunr stemmer support is not present. Please include / require Lunr stemmer support before this script.");var i="2"==t.version[0];t.th=function(){this.pipeline.reset(),this.pipeline.add(t.th.trimmer),i?this.tokenizer=t.th.tokenizer:(t.tokenizer&&(t.tokenizer=t.th.tokenizer),this.tokenizerFn&&(this.tokenizerFn=t.th.tokenizer))},t.th.wordCharacters="[฀-๿]",t.th.trimmer=t.trimmerSupport.generateTrimmer(t.th.wordCharacters),t.Pipeline.registerFunction(t.th.trimmer,"trimmer-th");var n=t.wordcut;n.init(),t.th.tokenizer=function(e){if(!arguments.length||null==e||null==e)return[];if(Array.isArray(e))return e.map(function(e){return i?new t.Token(e):e});var r=e.toString().replace(/^\s+/,"");return n.cut(r).split("|")}}});

docs/assets/javascripts/lunr/lunr.vi.js

@@ -1,17 +0,0 @@
-/*!
- * Lunr languages, `Vietnamese` language
- * https://github.com/MihaiValentin/lunr-languages
- *
- * Copyright 2017, Keerati Thiwanruk
- * http://www.mozilla.org/MPL/
- */
-/*!
- * based on
- * Snowball JavaScript Library v0.3
- * http://code.google.com/p/urim/
- * http://snowball.tartarus.org/
- *
- * Copyright 2010, Oleg Mazko
- * http://www.mozilla.org/MPL/
- */
-!function(e,r){"function"==typeof define&&define.amd?define(r):"object"==typeof exports?module.exports=r():r()(e.lunr)}(this,function(){return function(e){if(void 0===e)throw new Error("Lunr is not present. Please include / require Lunr before this script.");if(void 0===e.stemmerSupport)throw new Error("Lunr stemmer support is not present. Please include / require Lunr stemmer support before this script.");e.vi=function(){this.pipeline.reset(),this.pipeline.add(e.vi.stopWordFilter,e.vi.trimmer)},e.vi.wordCharacters="[A-Za-ẓ̀͐́͑̉̃̓ÂâÊêÔôĂ-ăĐ-đƠ-ơƯ-ư]",e.vi.trimmer=e.trimmerSupport.generateTrimmer(e.vi.wordCharacters),e.Pipeline.registerFunction(e.vi.trimmer,"trimmer-vi"),e.vi.stopWordFilter=e.generateStopWordFilter("là cái nhưng mà".split(" "))}});

docs/index.html

@@ -1,202 +0,0 @@
-
-
-
-
-<!doctype html>
-<html lang="en" class="no-js">
-  <head>
-    
-      <meta charset="utf-8">
-      <meta name="viewport" content="width=device-width,initial-scale=1">
-      <meta http-equiv="x-ua-compatible" content="ie=edge">
-      
-      
-      
-      
-        <meta name="lang:clipboard.copy" content="Copy to clipboard">
-      
-        <meta name="lang:clipboard.copied" content="Copied to clipboard">
-      
-        <meta name="lang:search.language" content="en">
-      
-        <meta name="lang:search.pipeline.stopwords" content="True">
-      
-        <meta name="lang:search.pipeline.trimmer" content="True">
-      
-        <meta name="lang:search.result.none" content="No matching documents">
-      
-        <meta name="lang:search.result.one" content="1 matching document">
-      
-        <meta name="lang:search.result.other" content="# matching documents">
-      
-        <meta name="lang:search.tokenizer" content="[\s\-]+">
-      
-      <link rel="shortcut icon" href="assets/images/favicon.png">
-      <meta name="generator" content="mkdocs-1.0.4, mkdocs-material-4.6.0">
-    
-    
-      
-        <title>Yq</title>
-      
-    
-    
-      <link rel="stylesheet" href="assets/stylesheets/application.1b62728e.css">
-      
-      
-    
-    
-      <script src="assets/javascripts/modernizr.268332fc.js"></script>
-    
-    
-      
-        <link href="https://fonts.gstatic.com" rel="preconnect" crossorigin>
-        <link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Roboto:300,400,400i,700%7CRoboto+Mono&display=fallback">
-        <style>body,input{font-family:"Roboto","Helvetica Neue",Helvetica,Arial,sans-serif}code,kbd,pre{font-family:"Roboto Mono","Courier New",Courier,monospace}</style>
-      
-    
-    <link rel="stylesheet" href="assets/fonts/material-icons.css">
-    
-    
-    
-      
-    
-    
-  </head>
-  
-    <body dir="ltr">
-  
-    <svg class="md-svg">
-      <defs>
-        
-        
-          <svg xmlns="http://www.w3.org/2000/svg" width="416" height="448" viewBox="0 0 416 448" id="__github"><path fill="currentColor" d="M160 304q0 10-3.125 20.5t-10.75 19T128 352t-18.125-8.5-10.75-19T96 304t3.125-20.5 10.75-19T128 256t18.125 8.5 10.75 19T160 304zm160 0q0 10-3.125 20.5t-10.75 19T288 352t-18.125-8.5-10.75-19T256 304t3.125-20.5 10.75-19T288 256t18.125 8.5 10.75 19T320 304zm40 0q0-30-17.25-51T296 232q-10.25 0-48.75 5.25Q229.5 240 208 240t-39.25-2.75Q130.75 232 120 232q-29.5 0-46.75 21T56 304q0 22 8 38.375t20.25 25.75 30.5 15 35 7.375 37.25 1.75h42q20.5 0 37.25-1.75t35-7.375 30.5-15 20.25-25.75T360 304zm56-44q0 51.75-15.25 82.75-9.5 19.25-26.375 33.25t-35.25 21.5-42.5 11.875-42.875 5.5T212 416q-19.5 0-35.5-.75t-36.875-3.125-38.125-7.5-34.25-12.875T37 371.5t-21.5-28.75Q0 312 0 260q0-59.25 34-99-6.75-20.5-6.75-42.5 0-29 12.75-54.5 27 0 47.5 9.875t47.25 30.875Q171.5 96 212 96q37 0 70 8 26.25-20.5 46.75-30.25T376 64q12.75 25.5 12.75 54.5 0 21.75-6.75 42 34 40 34 99.5z"/></svg>
-        
-      </defs>
-    </svg>
-    <input class="md-toggle" data-md-toggle="drawer" type="checkbox" id="__drawer" autocomplete="off">
-    <input class="md-toggle" data-md-toggle="search" type="checkbox" id="__search" autocomplete="off">
-    <label class="md-overlay" data-md-component="overlay" for="__drawer"></label>
-    
-      <a href="#new-documentation-website" tabindex="1" class="md-skip">
-        Skip to content
-      </a>
-    
-    
-      <header class="md-header" data-md-component="header">
-  <nav class="md-header-nav md-grid">
-    <div class="md-flex">
-      <div class="md-flex__cell md-flex__cell--shrink">
-        <a href="." title="Yq" class="md-header-nav__button md-logo">
-          
-            <i class="md-icon"></i>
-          
-        </a>
-      </div>
-      <div class="md-flex__cell md-flex__cell--shrink">
-        <label class="md-icon md-icon--menu md-header-nav__button" for="__drawer"></label>
-      </div>
-      <div class="md-flex__cell md-flex__cell--stretch">
-        <div class="md-flex__ellipsis md-header-nav__title" data-md-component="title">
-          
-            <span class="md-header-nav__topic">
-              Yq
-            </span>
-
-          
-        </div>
-      </div>
-      <div class="md-flex__cell md-flex__cell--shrink">
-        
-          <label class="md-icon md-icon--search md-header-nav__button" for="__search"></label>
-          
-        
-      </div>
-      
-        <div class="md-flex__cell md-flex__cell--shrink">
-          <div class="md-header-nav__source">
-            
-
-
-  
-
-<a href="https://github.com/mikefarah/yq/" title="Go to repository" class="md-source" data-md-source="github">
-  
-    <div class="md-source__icon">
-      <svg viewBox="0 0 24 24" width="24" height="24">
-        <use xlink:href="#__github" width="24" height="24"></use>
-      </svg>
-    </div>
-  
-  <div class="md-source__repository">
-    mikefarah/yq
-  </div>
-</a>
-          </div>
-        </div>
-      
-    </div>
-  </nav>
-</header>
-    
-    <div class="md-container">
-      
-        
-      
-      
-      <main class="md-main" role="main">
-        <div class="md-main__inner md-grid" data-md-component="container">
-          
-            
-       
-            
-          
-          <div class="md-content">
-            <article class="md-content__inner md-typeset">
-              
-                
-                
-                  <h1>New documentation website</h1>
-                
-<p>User docs are better than ever, and have been <a href="https://mikefarah.gitbook.io/yq">moved here</a></p>
-                
-                  
-                
-                
-              
-              
-                
-
-
-              
-            </article>
-          </div>
-        </div>
-      </main>
-      
-        
-<footer class="md-footer">
-  
-  <div class="md-footer-meta md-typeset">
-    <div class="md-footer-meta__inner md-grid">
-      <div class="md-footer-copyright">
-        
-        powered by
-        <a href="https://www.mkdocs.org">MkDocs</a>
-        and
-        <a href="https://squidfunk.github.io/mkdocs-material/">
-          Material for MkDocs</a>
-      </div>
-      
-    </div>
-  </div>
-</footer>
-      
-    </div>
-    
-      <script src="assets/javascripts/application.808e90bb.js"></script>
-      
-      <script>app.initialize({version:"1.0.4",url:{base:"."}})</script>
-      
-    
-  </body>
-</html>

docs/search/search_index.json

@@ -1 +0,0 @@
-{"config":{"lang":["en"],"prebuild_index":false,"separator":"[\\s\\-]+"},"docs":[{"location":"","text":"New documentation website User docs are better than ever, and have been moved here","title":"Home"},{"location":"#new-documentation-website","text":"User docs are better than ever, and have been moved here","title":"New documentation website"}]}

docs/sitemap.xml

@@ -1,8 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
-    <url>
-     <loc>None</loc>
-     <lastmod>2020-01-30</lastmod>
-     <changefreq>daily</changefreq>
-    </url>
-</urlset>

examples/data1-no-comments.yaml

@@ -0,0 +1,4 @@
+a: simple
+b: [1, 2]
+c:
+  test: 1

examples/data1.yaml

@@ -1,4 +1,6 @@
-a: simple # just the best
-b: [1, 2]
-c:
-  test: 1
+a:
+  key1: "value1"
+  key2: 2.6
+  ab:
+    key1: 6
+    key2: "h"

examples/merge-anchor.yaml

@@ -1,19 +1,19 @@
 foo: &foo
-  a: original
-  thing: coolasdf
-  thirsty: yep
+  a: foo_a
+  thing: foo_thing
+  c: foo_c
 
 bar: &bar
-  b: 2
-  thing: coconut
-  c: oldbar
+  b: bar_b
+  thing: bar_thing
+  c: bar_c
 
 foobarList:
+  b: foobarList_b
   <<: [*foo,*bar]
-  c: newbar
+  c: foobarList_c
 
 foobar:
+  c: foobar_c
   <<: *foo
-  thirty: well beyond
-  thing: ice
-  c: 3
+  thing: foobar_thing

examples/sample.json

@@ -1 +1 @@
-{"a":"Easy! as one two three","b":{"c":2,"d":[3,4],"e":[{"name":"fred","value":3},{"name":"sam","value":4}]}}
+{"a":"Easy! as one two three","b":{"c":2,"d":[3,4],"e":[{"name":"fred","value":3},{"name":"sam","value":4}]},"ab":"must appear last"}

examples/sample.yaml

@@ -1,3 +1,5 @@
+# Some doc
+
 a: true
 b:
   c: 2

examples/sample2.yaml

@@ -1,2 +0,0 @@
-b:
-  c: things

examples/simple-anchor-exploded.yaml

@@ -0,0 +1,5 @@
+foo:
+  a: 1
+
+foobar: 
+  a: 1

github-action/Dockerfile

@@ -1,4 +1,4 @@
-FROM mikefarah/yq:3
+FROM mikefarah/yq:4.9.3
 
 COPY entrypoint.sh /entrypoint.sh
 

go.mod

@@ -1,17 +1,16 @@
-module github.com/mikefarah/yq/v3
+module github.com/mikefarah/yq/v4
 
 require (
-	github.com/fatih/color v1.9.0
-	github.com/goccy/go-yaml v1.4.3
-	github.com/kylelemons/godebug v1.1.0
-	github.com/mattn/go-colorable v0.1.6 // indirect
-	github.com/pkg/errors v0.9.1
-	github.com/spf13/cobra v1.0.0
-	github.com/spf13/pflag v1.0.5 // indirect
-	golang.org/x/sys v0.0.0-20200413165638-669c56c373c4 // indirect
-	golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 // indirect
+	github.com/elliotchance/orderedmap v1.4.0
+	github.com/fatih/color v1.10.0
+	github.com/goccy/go-yaml v1.8.9
+	github.com/jinzhu/copier v0.2.8
+	github.com/spf13/cobra v1.1.3
+	github.com/timtadh/data-structures v0.5.3 // indirect
+	github.com/timtadh/lexmachine v0.2.2
+	golang.org/x/sys v0.0.0-20210317225723-c4fcb01b228e // indirect
 	gopkg.in/op/go-logging.v1 v1.0.0-20160211212156-b2cb9fa56473
-	gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c
+	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b
 )
 
-go 1.14
+go 1.15

go.sum

@@ -1,53 +1,112 @@
 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
+cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU=
+cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
+cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc=
+cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0=
+cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o=
+cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE=
+cloud.google.com/go/firestore v1.1.0/go.mod h1:ulACoGHTpvq5r8rxGJ4ddJZBZqakUQqClKRT5SZwBmk=
+cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2kNxGRt3I=
+cloud.google.com/go/storage v1.0.0/go.mod h1:IhtSnM/ZTZV8YYJWCY8RULGVqBDmpoyjwiyrjsg+URw=
+dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
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pkg/yqlib/all_at_once_evaluator.go

@@ -0,0 +1,70 @@
+package yqlib
+
+import (
+	"container/list"
+
+	yaml "gopkg.in/yaml.v3"
+)
+
+// A yaml expression evaluator that runs the expression once against all files/nodes in memory.
+type Evaluator interface {
+	EvaluateFiles(expression string, filenames []string, printer Printer) error
+
+	// EvaluateNodes takes an expression and one or more yaml nodes, returning a list of matching candidate nodes
+	EvaluateNodes(expression string, nodes ...*yaml.Node) (*list.List, error)
+
+	// EvaluateCandidateNodes takes an expression and list of candidate nodes, returning a list of matching candidate nodes
+	EvaluateCandidateNodes(expression string, inputCandidateNodes *list.List) (*list.List, error)
+}
+
+type allAtOnceEvaluator struct {
+	treeNavigator DataTreeNavigator
+	treeCreator   ExpressionParser
+}
+
+func NewAllAtOnceEvaluator() Evaluator {
+	return &allAtOnceEvaluator{treeNavigator: NewDataTreeNavigator(), treeCreator: NewExpressionParser()}
+}
+
+func (e *allAtOnceEvaluator) EvaluateNodes(expression string, nodes ...*yaml.Node) (*list.List, error) {
+	inputCandidates := list.New()
+	for _, node := range nodes {
+		inputCandidates.PushBack(&CandidateNode{Node: node})
+	}
+	return e.EvaluateCandidateNodes(expression, inputCandidates)
+}
+
+func (e *allAtOnceEvaluator) EvaluateCandidateNodes(expression string, inputCandidates *list.List) (*list.List, error) {
+	node, err := e.treeCreator.ParseExpression(expression)
+	if err != nil {
+		return nil, err
+	}
+	context, err := e.treeNavigator.GetMatchingNodes(Context{MatchingNodes: inputCandidates}, node)
+	if err != nil {
+		return nil, err
+	}
+	return context.MatchingNodes, nil
+}
+
+func (e *allAtOnceEvaluator) EvaluateFiles(expression string, filenames []string, printer Printer) error {
+	fileIndex := 0
+
+	var allDocuments *list.List = list.New()
+	for _, filename := range filenames {
+		reader, err := readStream(filename)
+		if err != nil {
+			return err
+		}
+		fileDocuments, err := readDocuments(reader, filename, fileIndex)
+		if err != nil {
+			return err
+		}
+		allDocuments.PushBackList(fileDocuments)
+		fileIndex = fileIndex + 1
+	}
+	matches, err := e.EvaluateCandidateNodes(expression, allDocuments)
+	if err != nil {
+		return err
+	}
+	return printer.PrintResults(matches)
+}

pkg/yqlib/all_at_once_evaluator_test.go

@@ -0,0 +1,40 @@
+package yqlib
+
+import (
+	"testing"
+
+	"github.com/mikefarah/yq/v4/test"
+)
+
+var evaluateNodesScenario = []expressionScenario{
+	{
+		document:   `a: hello`,
+		expression: `.a`,
+		expected: []string{
+			"D0, P[a], (!!str)::hello\n",
+		},
+	},
+	{
+		document:   `a: hello`,
+		expression: `.`,
+		expected: []string{
+			"D0, P[], (doc)::a: hello\n",
+		},
+	},
+	{
+		document:   `- a: "yes"`,
+		expression: `.[] | has("a")`,
+		expected: []string{
+			"D0, P[0], (!!bool)::true\n",
+		},
+	},
+}
+
+func TestAllAtOnceEvaluateNodes(t *testing.T) {
+	var evaluator = NewAllAtOnceEvaluator()
+	for _, tt := range evaluateNodesScenario {
+		node := test.ParseData(tt.document)
+		list, _ := evaluator.EvaluateNodes(tt.expression, &node)
+		test.AssertResultComplex(t, tt.expected, resultsToString(list))
+	}
+}

pkg/yqlib/candidate_node.go

@@ -0,0 +1,101 @@
+package yqlib
+
+import (
+	"fmt"
+
+	"github.com/jinzhu/copier"
+	yaml "gopkg.in/yaml.v3"
+)
+
+type CandidateNode struct {
+	Node      *yaml.Node     // the actual node
+	Parent    *CandidateNode // parent node
+	Path      []interface{}  /// the path we took to get to this node
+	Document  uint           // the document index of this node
+	Filename  string
+	FileIndex int
+	// when performing op against all nodes given, this will treat all the nodes as one
+	// (e.g. top level cross document merge). This property does not propegate to child nodes.
+	EvaluateTogether bool
+	IsMapKey         bool
+}
+
+func (n *CandidateNode) GetKey() string {
+	keyPrefix := ""
+	if n.IsMapKey {
+		keyPrefix = "key-"
+	}
+	return fmt.Sprintf("%v%v - %v", keyPrefix, n.Document, n.Path)
+}
+
+func (n *CandidateNode) CreateChild(path interface{}, node *yaml.Node) *CandidateNode {
+	return &CandidateNode{
+		Node:      node,
+		Path:      n.createChildPath(path),
+		Parent:    n,
+		Document:  n.Document,
+		Filename:  n.Filename,
+		FileIndex: n.FileIndex,
+	}
+}
+
+func (n *CandidateNode) createChildPath(path interface{}) []interface{} {
+	if path == nil {
+		newPath := make([]interface{}, len(n.Path))
+		copy(newPath, n.Path)
+		return newPath
+	}
+
+	//don't use append as they may actually modify the path of the orignal node!
+	newPath := make([]interface{}, len(n.Path)+1)
+	copy(newPath, n.Path)
+	newPath[len(n.Path)] = path
+	return newPath
+}
+
+func (n *CandidateNode) Copy() (*CandidateNode, error) {
+	clone := &CandidateNode{}
+	err := copier.Copy(clone, n)
+	if err != nil {
+		return nil, err
+	}
+	return clone, nil
+}
+
+// updates this candidate from the given candidate node
+func (n *CandidateNode) UpdateFrom(other *CandidateNode) {
+
+	n.UpdateAttributesFrom(other)
+	n.Node.Content = other.Node.Content
+	n.Node.Value = other.Node.Value
+}
+
+func (n *CandidateNode) UpdateAttributesFrom(other *CandidateNode) {
+	log.Debug("UpdateAttributesFrom: n: %v other: %v", n.GetKey(), other.GetKey())
+	if n.Node.Kind != other.Node.Kind {
+		// clear out the contents when switching to a different type
+		// e.g. map to array
+		n.Node.Content = make([]*yaml.Node, 0)
+		n.Node.Value = ""
+	}
+	n.Node.Kind = other.Node.Kind
+	n.Node.Tag = other.Node.Tag
+	n.Node.Alias = other.Node.Alias
+	n.Node.Anchor = other.Node.Anchor
+
+	// merge will pickup the style of the new thing
+	// when autocreating nodes
+	if n.Node.Style == 0 {
+		n.Node.Style = other.Node.Style
+	}
+
+	if other.Node.FootComment != "" {
+		n.Node.FootComment = other.Node.FootComment
+	}
+	if other.Node.HeadComment != "" {
+		n.Node.HeadComment = other.Node.HeadComment
+	}
+	if other.Node.LineComment != "" {
+		n.Node.LineComment = other.Node.LineComment
+	}
+}

pkg/yqlib/color_print.go

@@ -17,8 +17,8 @@ func format(attr color.Attribute) string {
 	return fmt.Sprintf("%s[%dm", escape, attr)
 }
 
-func ColorizeAndPrint(bytes []byte, writer io.Writer) error {
-	tokens := lexer.Tokenize(string(bytes))
+func colorizeAndPrint(yamlBytes []byte, writer io.Writer) error {
+	tokens := lexer.Tokenize(string(yamlBytes))
 	var p printer.Printer
 	p.Bool = func() *printer.Property {
 		return &printer.Property{

pkg/yqlib/context.go

@@ -0,0 +1,68 @@
+package yqlib
+
+import (
+	"container/list"
+
+	"github.com/jinzhu/copier"
+)
+
+type Context struct {
+	MatchingNodes  *list.List
+	Variables      map[string]*list.List
+	DontAutoCreate bool
+}
+
+func (n *Context) SingleReadonlyChildContext(candidate *CandidateNode) Context {
+	list := list.New()
+	list.PushBack(candidate)
+	newContext := n.ChildContext(list)
+	newContext.DontAutoCreate = true
+	return newContext
+}
+
+func (n *Context) SingleChildContext(candidate *CandidateNode) Context {
+	list := list.New()
+	list.PushBack(candidate)
+	return n.ChildContext(list)
+}
+
+func (n *Context) GetVariable(name string) *list.List {
+	if n.Variables == nil {
+		return nil
+	}
+	return n.Variables[name]
+}
+
+func (n *Context) SetVariable(name string, value *list.List) {
+	if n.Variables == nil {
+		n.Variables = make(map[string]*list.List)
+	}
+	n.Variables[name] = value
+}
+
+func (n *Context) ChildContext(results *list.List) Context {
+	clone := Context{}
+	err := copier.Copy(&clone, n)
+	if err != nil {
+		log.Error("Error cloning context :(")
+		panic(err)
+	}
+	clone.MatchingNodes = results
+	return clone
+}
+
+func (n *Context) Clone() Context {
+	clone := Context{}
+	err := copier.Copy(&clone, n)
+	if err != nil {
+		log.Error("Error cloning context :(")
+		panic(err)
+	}
+	return clone
+}
+
+func (n *Context) ReadOnlyClone() Context {
+	clone := n.Clone()
+	clone.DontAutoCreate = true
+	return clone
+}

pkg/yqlib/data_navigator.go

@@ -1,281 +0,0 @@
-package yqlib
-
-import (
-	"fmt"
-	"strconv"
-
-	yaml "gopkg.in/yaml.v3"
-)
-
-type DataNavigator interface {
-	Traverse(value *yaml.Node, path []interface{}) error
-}
-
-type navigator struct {
-	navigationStrategy NavigationStrategy
-}
-
-func NewDataNavigator(NavigationStrategy NavigationStrategy) DataNavigator {
-	return &navigator{
-		navigationStrategy: NavigationStrategy,
-	}
-}
-
-func (n *navigator) Traverse(value *yaml.Node, path []interface{}) error {
-	realValue := value
-	emptyArray := make([]interface{}, 0)
-	if realValue.Kind == yaml.DocumentNode {
-		log.Debugf("its a document! returning the first child")
-		return n.doTraverse(value.Content[0], "", path, emptyArray)
-	}
-	return n.doTraverse(value, "", path, emptyArray)
-}
-
-func (n *navigator) doTraverse(value *yaml.Node, head interface{}, tail []interface{}, pathStack []interface{}) error {
-
-	log.Debug("head %v", head)
-	DebugNode(value)
-	var nodeContext = NewNodeContext(value, head, tail, pathStack)
-
-	var errorDeepSplatting error
-	if head == "**" && value.Kind != yaml.ScalarNode && n.navigationStrategy.ShouldDeeplyTraverse(nodeContext) {
-		if len(pathStack) == 0 || pathStack[len(pathStack)-1] != "<<" {
-			errorDeepSplatting = n.recurse(value, head, tail, pathStack)
-		}
-		// ignore errors here, we are deep splatting so we may accidently give a string key
-		// to an array sequence
-		if len(tail) > 0 {
-			_ = n.recurse(value, tail[0], tail[1:], pathStack)
-		}
-		return errorDeepSplatting
-	}
-
-	if len(tail) > 0 && value.Kind != yaml.ScalarNode {
-		log.Debugf("diving into %v", tail[0])
-		DebugNode(value)
-		return n.recurse(value, tail[0], tail[1:], pathStack)
-	}
-	return n.navigationStrategy.Visit(nodeContext)
-}
-
-func (n *navigator) getOrReplace(original *yaml.Node, expectedKind yaml.Kind) *yaml.Node {
-	if original.Kind != expectedKind {
-		log.Debug("wanted %v but it was %v, overriding", KindString(expectedKind), KindString(original.Kind))
-		return &yaml.Node{Kind: expectedKind}
-	}
-	return original
-}
-
-func (n *navigator) recurse(value *yaml.Node, head interface{}, tail []interface{}, pathStack []interface{}) error {
-	log.Debug("recursing, processing %v, pathStack %v", head, pathStackToString(pathStack))
-	switch value.Kind {
-	case yaml.MappingNode:
-		log.Debug("its a map with %v entries", len(value.Content)/2)
-		headString := fmt.Sprintf("%v", head)
-		return n.recurseMap(value, headString, tail, pathStack)
-
-	case yaml.SequenceNode:
-		log.Debug("its a sequence of %v things!", len(value.Content))
-
-		switch head := head.(type) {
-		case int64:
-			return n.recurseArray(value, head, head, tail, pathStack)
-		default:
-
-			if head == "+" {
-				return n.appendArray(value, head, tail, pathStack)
-			} else if len(value.Content) == 0 && head == "**" {
-				return n.navigationStrategy.Visit(NewNodeContext(value, head, tail, pathStack))
-			}
-			return n.splatArray(value, head, tail, pathStack)
-		}
-	case yaml.AliasNode:
-		log.Debug("its an alias!")
-		DebugNode(value.Alias)
-		if n.navigationStrategy.FollowAlias(NewNodeContext(value, head, tail, pathStack)) {
-			log.Debug("following the alias")
-			return n.recurse(value.Alias, head, tail, pathStack)
-		}
-		return nil
-	default:
-		return n.navigationStrategy.Visit(NewNodeContext(value, head, tail, pathStack))
-	}
-}
-
-func (n *navigator) recurseMap(value *yaml.Node, head string, tail []interface{}, pathStack []interface{}) error {
-	traversedEntry := false
-	errorVisiting := n.visitMatchingEntries(value, head, tail, pathStack, func(contents []*yaml.Node, indexInMap int) error {
-		log.Debug("recurseMap: visitMatchingEntries for %v", contents[indexInMap].Value)
-		n.navigationStrategy.DebugVisitedNodes()
-		newPathStack := append(pathStack, contents[indexInMap].Value)
-		log.Debug("should I traverse? head: %v, path: %v", head, pathStackToString(newPathStack))
-		DebugNode(value)
-		if n.navigationStrategy.ShouldTraverse(NewNodeContext(contents[indexInMap+1], head, tail, newPathStack), contents[indexInMap].Value) {
-			log.Debug("recurseMap: Going to traverse")
-			traversedEntry = true
-			contents[indexInMap+1] = n.getOrReplace(contents[indexInMap+1], guessKind(head, tail, contents[indexInMap+1].Kind))
-			errorTraversing := n.doTraverse(contents[indexInMap+1], head, tail, newPathStack)
-			log.Debug("recurseMap: Finished traversing")
-			n.navigationStrategy.DebugVisitedNodes()
-			return errorTraversing
-		} else {
-			log.Debug("nope not traversing")
-		}
-		return nil
-	})
-
-	if errorVisiting != nil {
-		return errorVisiting
-	}
-
-	if len(value.Content) == 0 && head == "**" {
-		return n.navigationStrategy.Visit(NewNodeContext(value, head, tail, pathStack))
-	} else if traversedEntry || n.navigationStrategy.GetPathParser().IsPathExpression(head) || !n.navigationStrategy.AutoCreateMap(NewNodeContext(value, head, tail, pathStack)) {
-		return nil
-	}
-
-	_, errorParsingInt := strconv.ParseInt(head, 10, 64)
-
-	mapEntryKey := yaml.Node{Value: head, Kind: yaml.ScalarNode}
-
-	if errorParsingInt == nil {
-		// fixes a json encoding problem where keys that look like numbers
-		// get treated as numbers and cannot be used in a json map
-		mapEntryKey.Style = yaml.LiteralStyle
-	}
-
-	value.Content = append(value.Content, &mapEntryKey)
-	mapEntryValue := yaml.Node{Kind: guessKind(head, tail, 0)}
-	value.Content = append(value.Content, &mapEntryValue)
-	log.Debug("adding a new node %v - def a string", head)
-	return n.doTraverse(&mapEntryValue, head, tail, append(pathStack, head))
-}
-
-// need to pass the node in, as it may be aliased
-type mapVisitorFn func(contents []*yaml.Node, index int) error
-
-func (n *navigator) visitDirectMatchingEntries(node *yaml.Node, head string, tail []interface{}, pathStack []interface{}, visit mapVisitorFn) error {
-	var contents = node.Content
-	for index := 0; index < len(contents); index = index + 2 {
-		content := contents[index]
-
-		log.Debug("index %v, checking %v, %v", index, content.Value, content.Tag)
-		n.navigationStrategy.DebugVisitedNodes()
-		errorVisiting := visit(contents, index)
-		if errorVisiting != nil {
-			return errorVisiting
-		}
-	}
-	return nil
-}
-
-func (n *navigator) visitMatchingEntries(node *yaml.Node, head string, tail []interface{}, pathStack []interface{}, visit mapVisitorFn) error {
-	var contents = node.Content
-	log.Debug("visitMatchingEntries %v", head)
-	DebugNode(node)
-	// value.Content is a concatenated array of key, value,
-	// so keys are in the even indexes, values in odd.
-	// merge aliases are defined first, but we only want to traverse them
-	// if we don't find a match directly on this node first.
-	errorVisitedDirectEntries := n.visitDirectMatchingEntries(node, head, tail, pathStack, visit)
-
-	if errorVisitedDirectEntries != nil || !n.navigationStrategy.FollowAlias(NewNodeContext(node, head, tail, pathStack)) {
-		return errorVisitedDirectEntries
-	}
-	return n.visitAliases(contents, head, tail, pathStack, visit)
-}
-
-func (n *navigator) visitAliases(contents []*yaml.Node, head string, tail []interface{}, pathStack []interface{}, visit mapVisitorFn) error {
-	// merge aliases are defined first, but we only want to traverse them
-	// if we don't find a match on this node first.
-	// traverse them backwards so that the last alias overrides the preceding.
-	// a node can either be
-	// an alias to one other node (e.g. <<: *blah)
-	// or a sequence of aliases   (e.g. <<: [*blah, *foo])
-	log.Debug("checking for aliases, head: %v, pathstack: %v", head, pathStackToString(pathStack))
-	for index := len(contents) - 2; index >= 0; index = index - 2 {
-
-		if contents[index+1].Kind == yaml.AliasNode && contents[index].Value == "<<" {
-			valueNode := contents[index+1]
-			log.Debug("found an alias")
-			DebugNode(contents[index])
-			DebugNode(valueNode)
-
-			errorInAlias := n.visitMatchingEntries(valueNode.Alias, head, tail, pathStack, visit)
-			if errorInAlias != nil {
-				return errorInAlias
-			}
-		} else if contents[index+1].Kind == yaml.SequenceNode {
-			// could be an array of aliases...
-			errorVisitingAliasSeq := n.visitAliasSequence(contents[index+1].Content, head, tail, pathStack, visit)
-			if errorVisitingAliasSeq != nil {
-				return errorVisitingAliasSeq
-			}
-		}
-	}
-	return nil
-}
-
-func (n *navigator) visitAliasSequence(possibleAliasArray []*yaml.Node, head string, tail []interface{}, pathStack []interface{}, visit mapVisitorFn) error {
-	// need to search this backwards too, so that aliases defined last override the preceding.
-	for aliasIndex := len(possibleAliasArray) - 1; aliasIndex >= 0; aliasIndex = aliasIndex - 1 {
-		child := possibleAliasArray[aliasIndex]
-		if child.Kind == yaml.AliasNode {
-			log.Debug("found an alias")
-			DebugNode(child)
-			errorInAlias := n.visitMatchingEntries(child.Alias, head, tail, pathStack, visit)
-			if errorInAlias != nil {
-				return errorInAlias
-			}
-		}
-	}
-	return nil
-}
-
-func (n *navigator) splatArray(value *yaml.Node, head interface{}, tail []interface{}, pathStack []interface{}) error {
-	for index, childValue := range value.Content {
-		log.Debug("processing")
-		DebugNode(childValue)
-		childValue = n.getOrReplace(childValue, guessKind(head, tail, childValue.Kind))
-
-		newPathStack := append(pathStack, index)
-		if n.navigationStrategy.ShouldTraverse(NewNodeContext(childValue, head, tail, newPathStack), childValue.Value) {
-			// here we should not deeply traverse the array if we are appending..not sure how to do that.
-			// need to visit instead...
-			// easiest way is to pop off the head and pass the rest of the tail in.
-			var err = n.doTraverse(childValue, head, tail, newPathStack)
-			if err != nil {
-				return err
-			}
-		}
-	}
-	return nil
-}
-
-func (n *navigator) appendArray(value *yaml.Node, head interface{}, tail []interface{}, pathStack []interface{}) error {
-	var newNode = yaml.Node{Kind: guessKind(head, tail, 0)}
-	value.Content = append(value.Content, &newNode)
-	log.Debug("appending a new node, %v", value.Content)
-	return n.doTraverse(&newNode, head, tail, append(pathStack, len(value.Content)-1))
-}
-
-func (n *navigator) recurseArray(value *yaml.Node, index int64, head interface{}, tail []interface{}, pathStack []interface{}) error {
-	var contentLength = int64(len(value.Content))
-	for contentLength <= index {
-		value.Content = append(value.Content, &yaml.Node{Kind: guessKind(head, tail, 0)})
-		contentLength = int64(len(value.Content))
-	}
-	var indexToUse = index
-
-	if indexToUse < 0 {
-		indexToUse = contentLength + indexToUse
-	}
-
-	if indexToUse < 0 {
-		return fmt.Errorf("Index [%v] out of range, array size is %v", index, contentLength)
-	}
-
-	value.Content[indexToUse] = n.getOrReplace(value.Content[indexToUse], guessKind(head, tail, value.Content[indexToUse].Kind))
-
-	return n.doTraverse(value.Content[indexToUse], head, tail, append(pathStack, index))
-}

pkg/yqlib/data_navigator_test.go

@@ -1 +0,0 @@
-package yqlib

pkg/yqlib/data_tree_navigator.go

@@ -0,0 +1,41 @@
+package yqlib
+
+import (
+	"fmt"
+
+	logging "gopkg.in/op/go-logging.v1"
+)
+
+type DataTreeNavigator interface {
+	// given the context and a expressionNode,
+	// this will process the against the given expressionNode and return
+	// a new context of matching candidates
+	GetMatchingNodes(context Context, expressionNode *ExpressionNode) (Context, error)
+}
+
+type dataTreeNavigator struct {
+}
+
+func NewDataTreeNavigator() DataTreeNavigator {
+	return &dataTreeNavigator{}
+}
+
+func (d *dataTreeNavigator) GetMatchingNodes(context Context, expressionNode *ExpressionNode) (Context, error) {
+	if expressionNode == nil {
+		log.Debugf("getMatchingNodes - nothing to do")
+		return context, nil
+	}
+	log.Debugf("Processing Op: %v", expressionNode.Operation.toString())
+	if log.IsEnabledFor(logging.DEBUG) {
+		for el := context.MatchingNodes.Front(); el != nil; el = el.Next() {
+			log.Debug(NodeToString(el.Value.(*CandidateNode)))
+		}
+	}
+	log.Debug(">>")
+	handler := expressionNode.Operation.OperationType.Handler
+	if handler != nil {
+		return handler(d, context, expressionNode)
+	}
+	return Context{}, fmt.Errorf("Unknown operator %v", expressionNode.Operation.OperationType)
+
+}

pkg/yqlib/delete_navigation_strategy.go

@@ -1,76 +0,0 @@
-package yqlib
-
-import (
-	yaml "gopkg.in/yaml.v3"
-)
-
-func DeleteNavigationStrategy(pathElementToDelete interface{}) NavigationStrategy {
-	parser := NewPathParser()
-	return &NavigationStrategyImpl{
-		visitedNodes: []*NodeContext{},
-		pathParser:   parser,
-		followAlias: func(nodeContext NodeContext) bool {
-			return false
-		},
-		autoCreateMap: func(nodeContext NodeContext) bool {
-			return false
-		},
-		shouldDeeplyTraverse: func(nodeContext NodeContext) bool {
-			return true
-		},
-		visit: func(nodeContext NodeContext) error {
-			node := nodeContext.Node
-			log.Debug("need to find and delete %v in here", pathElementToDelete)
-			DebugNode(node)
-			if node.Kind == yaml.SequenceNode {
-				newContent := deleteFromArray(parser, node.Content, nodeContext.PathStack, pathElementToDelete)
-				node.Content = newContent
-			} else if node.Kind == yaml.MappingNode {
-				node.Content = deleteFromMap(parser, node.Content, nodeContext.PathStack, pathElementToDelete)
-			}
-			return nil
-		},
-	}
-}
-func deleteFromMap(pathParser PathParser, contents []*yaml.Node, pathStack []interface{}, pathElementToDelete interface{}) []*yaml.Node {
-	newContents := make([]*yaml.Node, 0)
-	for index := 0; index < len(contents); index = index + 2 {
-		keyNode := contents[index]
-		valueNode := contents[index+1]
-		if !pathParser.MatchesNextPathElement(NewNodeContext(keyNode, pathElementToDelete, make([]interface{}, 0), pathStack), keyNode.Value) {
-			log.Debug("adding node %v", keyNode.Value)
-			newContents = append(newContents, keyNode, valueNode)
-		} else {
-			log.Debug("skipping node %v", keyNode.Value)
-		}
-	}
-	return newContents
-}
-
-func deleteFromArray(pathParser PathParser, content []*yaml.Node, pathStack []interface{}, pathElementToDelete interface{}) []*yaml.Node {
-
-	switch pathElementToDelete := pathElementToDelete.(type) {
-	case int64:
-		return deleteIndexInArray(content, pathElementToDelete)
-	default:
-		log.Debug("%v is not a numeric index, finding matching patterns", pathElementToDelete)
-		var newArray = make([]*yaml.Node, 0)
-
-		for _, childValue := range content {
-			if !pathParser.MatchesNextPathElement(NewNodeContext(childValue, pathElementToDelete, make([]interface{}, 0), pathStack), childValue.Value) {
-				newArray = append(newArray, childValue)
-			}
-		}
-		return newArray
-	}
-
-}
-
-func deleteIndexInArray(content []*yaml.Node, index int64) []*yaml.Node {
-	log.Debug("deleting index %v in array", index)
-	if index >= int64(len(content)) {
-		log.Debug("index %v is greater than content length %v", index, len(content))
-		return content
-	}
-	return append(content[:index], content[index+1:]...)
-}

pkg/yqlib/doc/.gitignore

@@ -0,0 +1 @@
+*.zip

pkg/yqlib/doc/Add.md

@@ -0,0 +1,239 @@
+Add behaves differently according to the type of the LHS:
+- arrays: concatenate
+- number scalars: arithmetic addition
+- string scalars: concatenate
+
+Use `+=` as append assign for things like increment. Note that `.a += .x` is equivalent to running `.a = .a + .x`.
+
+## Concatenate and assign arrays
+Given a sample.yml file of:
+```yaml
+a:
+  val: thing
+  b:
+    - cat
+    - dog
+```
+then
+```bash
+yq eval '.a.b += ["cow"]' sample.yml
+```
+will output
+```yaml
+a:
+  val: thing
+  b:
+    - cat
+    - dog
+    - cow
+```
+
+## Concatenate arrays
+Given a sample.yml file of:
+```yaml
+a:
+  - 1
+  - 2
+b:
+  - 3
+  - 4
+```
+then
+```bash
+yq eval '.a + .b' sample.yml
+```
+will output
+```yaml
+- 1
+- 2
+- 3
+- 4
+```
+
+## Concatenate null to array
+Given a sample.yml file of:
+```yaml
+a:
+  - 1
+  - 2
+```
+then
+```bash
+yq eval '.a + null' sample.yml
+```
+will output
+```yaml
+- 1
+- 2
+```
+
+## Add new object to array
+Given a sample.yml file of:
+```yaml
+a:
+  - dog: woof
+```
+then
+```bash
+yq eval '.a + {"cat": "meow"}' sample.yml
+```
+will output
+```yaml
+- dog: woof
+- cat: meow
+```
+
+## Add string to array
+Given a sample.yml file of:
+```yaml
+a:
+  - 1
+  - 2
+```
+then
+```bash
+yq eval '.a + "hello"' sample.yml
+```
+will output
+```yaml
+- 1
+- 2
+- hello
+```
+
+## Append to array
+Given a sample.yml file of:
+```yaml
+a:
+  - 1
+  - 2
+b:
+  - 3
+  - 4
+```
+then
+```bash
+yq eval '.a = .a + .b' sample.yml
+```
+will output
+```yaml
+a:
+  - 1
+  - 2
+  - 3
+  - 4
+b:
+  - 3
+  - 4
+```
+
+## Relative append
+Given a sample.yml file of:
+```yaml
+a:
+  a1:
+    b:
+      - cat
+  a2:
+    b:
+      - dog
+  a3: {}
+```
+then
+```bash
+yq eval '.a[].b += ["mouse"]' sample.yml
+```
+will output
+```yaml
+a:
+  a1:
+    b:
+      - cat
+      - mouse
+  a2:
+    b:
+      - dog
+      - mouse
+  a3: {b: [mouse]}
+```
+
+## String concatenation
+Given a sample.yml file of:
+```yaml
+a: cat
+b: meow
+```
+then
+```bash
+yq eval '.a = .a + .b' sample.yml
+```
+will output
+```yaml
+a: catmeow
+b: meow
+```
+
+## Number addition - float
+If the lhs or rhs are floats then the expression will be calculated with floats.
+
+Given a sample.yml file of:
+```yaml
+a: 3
+b: 4.9
+```
+then
+```bash
+yq eval '.a = .a + .b' sample.yml
+```
+will output
+```yaml
+a: 7.9
+b: 4.9
+```
+
+## Number addition - int
+If both the lhs and rhs are ints then the expression will be calculated with ints.
+
+Given a sample.yml file of:
+```yaml
+a: 3
+b: 4
+```
+then
+```bash
+yq eval '.a = .a + .b' sample.yml
+```
+will output
+```yaml
+a: 7
+b: 4
+```
+
+## Increment numbers
+Given a sample.yml file of:
+```yaml
+a: 3
+b: 5
+```
+then
+```bash
+yq eval '.[] += 1' sample.yml
+```
+will output
+```yaml
+a: 4
+b: 6
+```
+
+## Add to null
+Adding to null simply returns the rhs
+
+Running
+```bash
+yq eval --null-input 'null + "cat"'
+```
+will output
+```yaml
+cat
+```
+

pkg/yqlib/doc/Alternative (Default value).md

@@ -0,0 +1,73 @@
+This operator is used to provide alternative (or default) values when a particular expression is either null or false.
+
+## LHS is defined
+Given a sample.yml file of:
+```yaml
+a: bridge
+```
+then
+```bash
+yq eval '.a // "hello"' sample.yml
+```
+will output
+```yaml
+bridge
+```
+
+## LHS is not defined
+Given a sample.yml file of:
+```yaml
+{}
+```
+then
+```bash
+yq eval '.a // "hello"' sample.yml
+```
+will output
+```yaml
+hello
+```
+
+## LHS is null
+Given a sample.yml file of:
+```yaml
+a: ~
+```
+then
+```bash
+yq eval '.a // "hello"' sample.yml
+```
+will output
+```yaml
+hello
+```
+
+## LHS is false
+Given a sample.yml file of:
+```yaml
+a: false
+```
+then
+```bash
+yq eval '.a // "hello"' sample.yml
+```
+will output
+```yaml
+hello
+```
+
+## RHS is an expression
+Given a sample.yml file of:
+```yaml
+a: false
+b: cat
+```
+then
+```bash
+yq eval '.a // .b' sample.yml
+```
+will output
+```yaml
+cat
+```
+

pkg/yqlib/doc/Anchor and Alias Operators.md

@@ -0,0 +1,301 @@
+Use the `alias` and `anchor` operators to read and write yaml aliases and anchors. The `explode` operator normalises a yaml file (dereference (or expands) aliases and remove anchor names).
+
+`yq` supports merge aliases (like `<<: *blah`) however this is no longer in the standard yaml spec (1.2) and so `yq` will automatically add the `!!merge` tag to these nodes as it is effectively a custom tag.
+
+
+## Merge one map
+see https://yaml.org/type/merge.html
+
+Given a sample.yml file of:
+```yaml
+- &CENTER
+  x: 1
+  y: 2
+- &LEFT
+  x: 0
+  y: 2
+- &BIG
+  r: 10
+- &SMALL
+  r: 1
+- !!merge <<: *CENTER
+  r: 10
+```
+then
+```bash
+yq eval '.[4] | explode(.)' sample.yml
+```
+will output
+```yaml
+x: 1
+y: 2
+r: 10
+```
+
+## Merge multiple maps
+see https://yaml.org/type/merge.html
+
+Given a sample.yml file of:
+```yaml
+- &CENTER
+  x: 1
+  y: 2
+- &LEFT
+  x: 0
+  y: 2
+- &BIG
+  r: 10
+- &SMALL
+  r: 1
+- !!merge <<:
+    - *CENTER
+    - *BIG
+```
+then
+```bash
+yq eval '.[4] | explode(.)' sample.yml
+```
+will output
+```yaml
+r: 10
+x: 1
+y: 2
+```
+
+## Override
+see https://yaml.org/type/merge.html
+
+Given a sample.yml file of:
+```yaml
+- &CENTER
+  x: 1
+  y: 2
+- &LEFT
+  x: 0
+  y: 2
+- &BIG
+  r: 10
+- &SMALL
+  r: 1
+- !!merge <<:
+    - *BIG
+    - *LEFT
+    - *SMALL
+  x: 1
+```
+then
+```bash
+yq eval '.[4] | explode(.)' sample.yml
+```
+will output
+```yaml
+r: 10
+x: 1
+y: 2
+```
+
+## Get anchor
+Given a sample.yml file of:
+```yaml
+a: &billyBob cat
+```
+then
+```bash
+yq eval '.a | anchor' sample.yml
+```
+will output
+```yaml
+billyBob
+```
+
+## Set anchor
+Given a sample.yml file of:
+```yaml
+a: cat
+```
+then
+```bash
+yq eval '.a anchor = "foobar"' sample.yml
+```
+will output
+```yaml
+a: &foobar cat
+```
+
+## Set anchor relatively using assign-update
+Given a sample.yml file of:
+```yaml
+a:
+  b: cat
+```
+then
+```bash
+yq eval '.a anchor |= .b' sample.yml
+```
+will output
+```yaml
+a: &cat
+  b: cat
+```
+
+## Get alias
+Given a sample.yml file of:
+```yaml
+b: &billyBob meow
+a: *billyBob
+```
+then
+```bash
+yq eval '.a | alias' sample.yml
+```
+will output
+```yaml
+billyBob
+```
+
+## Set alias
+Given a sample.yml file of:
+```yaml
+b: &meow purr
+a: cat
+```
+then
+```bash
+yq eval '.a alias = "meow"' sample.yml
+```
+will output
+```yaml
+b: &meow purr
+a: *meow
+```
+
+## Set alias to blank does nothing
+Given a sample.yml file of:
+```yaml
+b: &meow purr
+a: cat
+```
+then
+```bash
+yq eval '.a alias = ""' sample.yml
+```
+will output
+```yaml
+b: &meow purr
+a: cat
+```
+
+## Set alias relatively using assign-update
+Given a sample.yml file of:
+```yaml
+b: &meow purr
+a:
+  f: meow
+```
+then
+```bash
+yq eval '.a alias |= .f' sample.yml
+```
+will output
+```yaml
+b: &meow purr
+a: *meow
+```
+
+## Explode alias and anchor
+Given a sample.yml file of:
+```yaml
+f:
+  a: &a cat
+  b: *a
+```
+then
+```bash
+yq eval 'explode(.f)' sample.yml
+```
+will output
+```yaml
+f:
+  a: cat
+  b: cat
+```
+
+## Explode with no aliases or anchors
+Given a sample.yml file of:
+```yaml
+a: mike
+```
+then
+```bash
+yq eval 'explode(.a)' sample.yml
+```
+will output
+```yaml
+a: mike
+```
+
+## Explode with alias keys
+Given a sample.yml file of:
+```yaml
+f:
+  a: &a cat
+  *a: b
+```
+then
+```bash
+yq eval 'explode(.f)' sample.yml
+```
+will output
+```yaml
+f:
+  a: cat
+  cat: b
+```
+
+## Explode with merge anchors
+Given a sample.yml file of:
+```yaml
+foo: &foo
+  a: foo_a
+  thing: foo_thing
+  c: foo_c
+bar: &bar
+  b: bar_b
+  thing: bar_thing
+  c: bar_c
+foobarList:
+  b: foobarList_b
+  !!merge <<:
+    - *foo
+    - *bar
+  c: foobarList_c
+foobar:
+  c: foobar_c
+  !!merge <<: *foo
+  thing: foobar_thing
+```
+then
+```bash
+yq eval 'explode(.)' sample.yml
+```
+will output
+```yaml
+foo:
+  a: foo_a
+  thing: foo_thing
+  c: foo_c
+bar:
+  b: bar_b
+  thing: bar_thing
+  c: bar_c
+foobarList:
+  b: bar_b
+  thing: foo_thing
+  c: foobarList_c
+  a: foo_a
+foobar:
+  c: foo_c
+  a: foo_a
+  thing: foobar_thing
+```
+

pkg/yqlib/doc/Assign (Update).md

@@ -0,0 +1,184 @@
+
+## Create yaml file
+Running
+```bash
+yq eval --null-input '.a.b = "cat" | .x = "frog"'
+```
+will output
+```yaml
+a:
+  b: cat
+x: frog
+```
+
+## Update node to be the child value
+Given a sample.yml file of:
+```yaml
+a:
+  b:
+    g: foof
+```
+then
+```bash
+yq eval '.a |= .b' sample.yml
+```
+will output
+```yaml
+a:
+  g: foof
+```
+
+## Update node from another file
+Note this will also work when the second file is a scalar (string/number)
+
+Given a sample.yml file of:
+```yaml
+a: apples
+```
+And another sample another.yml file of:
+```yaml
+b: bob
+```
+then
+```bash
+yq eval-all 'select(fileIndex==0).a = select(fileIndex==1) | select(fileIndex==0)' sample.yml another.yml
+```
+will output
+```yaml
+a:
+  b: bob
+```
+
+## Update node to be the sibling value
+Given a sample.yml file of:
+```yaml
+a:
+  b: child
+b: sibling
+```
+then
+```bash
+yq eval '.a = .b' sample.yml
+```
+will output
+```yaml
+a: sibling
+b: sibling
+```
+
+## Updated multiple paths
+Given a sample.yml file of:
+```yaml
+a: fieldA
+b: fieldB
+c: fieldC
+```
+then
+```bash
+yq eval '(.a, .c) |= "potatoe"' sample.yml
+```
+will output
+```yaml
+a: potatoe
+b: fieldB
+c: potatoe
+```
+
+## Update string value
+Given a sample.yml file of:
+```yaml
+a:
+  b: apple
+```
+then
+```bash
+yq eval '.a.b = "frog"' sample.yml
+```
+will output
+```yaml
+a:
+  b: frog
+```
+
+## Update string value via |=
+Note there is no difference between `=` and `|=` when the RHS is a scalar
+
+Given a sample.yml file of:
+```yaml
+a:
+  b: apple
+```
+then
+```bash
+yq eval '.a.b |= "frog"' sample.yml
+```
+will output
+```yaml
+a:
+  b: frog
+```
+
+## Update selected results
+Given a sample.yml file of:
+```yaml
+a:
+  b: apple
+  c: cactus
+```
+then
+```bash
+yq eval '(.a[] | select(. == "apple")) = "frog"' sample.yml
+```
+will output
+```yaml
+a:
+  b: frog
+  c: cactus
+```
+
+## Update array values
+Given a sample.yml file of:
+```yaml
+- candy
+- apple
+- sandy
+```
+then
+```bash
+yq eval '(.[] | select(. == "*andy")) = "bogs"' sample.yml
+```
+will output
+```yaml
+- bogs
+- apple
+- bogs
+```
+
+## Update empty object
+Given a sample.yml file of:
+```yaml
+{}
+```
+then
+```bash
+yq eval '.a.b |= "bogs"' sample.yml
+```
+will output
+```yaml
+{a: {b: bogs}}
+```
+
+## Update empty object and array
+Given a sample.yml file of:
+```yaml
+{}
+```
+then
+```bash
+yq eval '.a.b.[0] |= "bogs"' sample.yml
+```
+will output
+```yaml
+{a: {b: [bogs]}}
+```
+

pkg/yqlib/doc/Boolean Operators.md

@@ -0,0 +1,220 @@
+The `or` and `and` operators take two parameters and return a boolean result. 
+
+`not` flips a boolean from true to false, or vice versa. 
+
+`any` will return `true` if there are any `true` values in a array sequence, and `all` will return true if _all_ elements in an array are true.
+
+`any_c(condition)` and `all_c(condition)` are like `any` and `all` but they take a condition expression that is used against each element to determine if it's `true`. Note: in `jq` you can simply pass a condition to `any` or `all` and it simply works - `yq` isn't that clever..yet
+
+These are most commonly used with the `select` operator to filter particular nodes.
+
+## `or` example
+Running
+```bash
+yq eval --null-input 'true or false'
+```
+will output
+```yaml
+true
+```
+
+## `and` example
+Running
+```bash
+yq eval --null-input 'true and false'
+```
+will output
+```yaml
+false
+```
+
+## Matching nodes with select, equals and or
+Given a sample.yml file of:
+```yaml
+- a: bird
+  b: dog
+- a: frog
+  b: bird
+- a: cat
+  b: fly
+```
+then
+```bash
+yq eval '[.[] | select(.a == "cat" or .b == "dog")]' sample.yml
+```
+will output
+```yaml
+- a: bird
+  b: dog
+- a: cat
+  b: fly
+```
+
+## `any` returns true if any boolean in a given array is true
+Given a sample.yml file of:
+```yaml
+- false
+- true
+```
+then
+```bash
+yq eval 'any' sample.yml
+```
+will output
+```yaml
+true
+```
+
+## `any` returns false for an empty array
+Given a sample.yml file of:
+```yaml
+[]
+```
+then
+```bash
+yq eval 'any' sample.yml
+```
+will output
+```yaml
+false
+```
+
+## `any_c` returns true if any element in the array is true for the given condition.
+Given a sample.yml file of:
+```yaml
+a:
+  - rad
+  - awesome
+b:
+  - meh
+  - whatever
+```
+then
+```bash
+yq eval '.[] |= any_c(. == "awesome")' sample.yml
+```
+will output
+```yaml
+a: true
+b: false
+```
+
+## `all` returns true if all booleans in a given array are true
+Given a sample.yml file of:
+```yaml
+- true
+- true
+```
+then
+```bash
+yq eval 'all' sample.yml
+```
+will output
+```yaml
+true
+```
+
+## `all` returns true for an empty array
+Given a sample.yml file of:
+```yaml
+[]
+```
+then
+```bash
+yq eval 'all' sample.yml
+```
+will output
+```yaml
+true
+```
+
+## `all_c` returns true if all elements in the array are true for the given condition.
+Given a sample.yml file of:
+```yaml
+a:
+  - rad
+  - awesome
+b:
+  - meh
+  - 12
+```
+then
+```bash
+yq eval '.[] |= all_c(tag == "!!str")' sample.yml
+```
+will output
+```yaml
+a: true
+b: false
+```
+
+## Not true is false
+Running
+```bash
+yq eval --null-input 'true | not'
+```
+will output
+```yaml
+false
+```
+
+## Not false is true
+Running
+```bash
+yq eval --null-input 'false | not'
+```
+will output
+```yaml
+true
+```
+
+## String values considered to be true
+Running
+```bash
+yq eval --null-input '"cat" | not'
+```
+will output
+```yaml
+false
+```
+
+## Empty string value considered to be true
+Running
+```bash
+yq eval --null-input '"" | not'
+```
+will output
+```yaml
+false
+```
+
+## Numbers are considered to be true
+Running
+```bash
+yq eval --null-input '1 | not'
+```
+will output
+```yaml
+false
+```
+
+## Zero is considered to be true
+Running
+```bash
+yq eval --null-input '0 | not'
+```
+will output
+```yaml
+false
+```
+
+## Null is considered to be false
+Running
+```bash
+yq eval --null-input '~ | not'
+```
+will output
+```yaml
+true
+```
+