Files
wails/v2/cmd/wails/internal/commands/debug/debug.go
2021-01-11 11:20:25 +11:00

124 lines
2.9 KiB
Go

package debug
import (
"fmt"
"github.com/wailsapp/wails/v2/internal/shell"
"io"
"os"
"runtime"
"strings"
"time"
"github.com/leaanthony/clir"
"github.com/leaanthony/slicer"
"github.com/wailsapp/wails/v2/pkg/clilogger"
"github.com/wailsapp/wails/v2/pkg/commands/build"
)
// AddSubcommand adds the `debug` command for the Wails application
func AddSubcommand(app *clir.Cli, w io.Writer) error {
outputType := "desktop"
validTargetTypes := slicer.String([]string{"desktop", "hybrid", "server"})
command := app.NewSubCommand("debug", "Builds the application then runs delve on the binary")
// Setup target type flag
description := "Type of application to build. Valid types: " + validTargetTypes.Join(",")
command.StringFlag("t", description, &outputType)
compilerCommand := "go"
command.StringFlag("compiler", "Use a different go compiler to build, eg go1.15beta1", &compilerCommand)
quiet := false
command.BoolFlag("q", "Suppress output to console", &quiet)
// ldflags to pass to `go`
ldflags := ""
command.StringFlag("ldflags", "optional ldflags", &ldflags)
// Log to file
logFile := ""
command.StringFlag("l", "Log to file", &logFile)
command.Action(func() error {
// Create logger
logger := clilogger.New(w)
logger.Mute(quiet)
// Validate output type
if !validTargetTypes.Contains(outputType) {
return fmt.Errorf("output type '%s' is not valid", outputType)
}
if !quiet {
app.PrintBanner()
}
task := fmt.Sprintf("Building %s Application", strings.Title(outputType))
logger.Println(task)
logger.Println(strings.Repeat("-", len(task)))
// Setup mode
mode := build.Debug
// Create BuildOptions
buildOptions := &build.Options{
Logger: logger,
OutputType: outputType,
Mode: mode,
Pack: false,
Platform: runtime.GOOS,
LDFlags: ldflags,
Compiler: compilerCommand,
KeepAssets: false,
}
outputFilename, err := doDebugBuild(buildOptions)
if err != nil {
return err
}
// Check delve exists
delveExists := shell.CommandExists("dlv")
if !delveExists {
return fmt.Errorf("cannot launch delve (Is it installed?)")
}
// Get cwd
cwd, err := os.Getwd()
if err != nil {
return err
}
// Launch delve
println("Launching Delve on port 2345...")
command := shell.CreateCommand(cwd, "dlv", "--listen=:2345", "--headless=true", "--api-version=2", "--accept-multiclient", "exec", outputFilename)
return command.Run()
})
return nil
}
// doDebugBuild is our main build command
func doDebugBuild(buildOptions *build.Options) (string, error) {
// Start Time
start := time.Now()
outputFilename, err := build.Build(buildOptions)
if err != nil {
return "", err
}
// Output stats
elapsed := time.Since(start)
buildOptions.Logger.Println("")
buildOptions.Logger.Println(fmt.Sprintf("Built '%s' in %s.", outputFilename, elapsed.Round(time.Millisecond).String()))
buildOptions.Logger.Println("")
return outputFilename, nil
}