feat: add linux prereq checking

cmd/linux.go

@@ -1,6 +1,8 @@
 package cmd
 
-import "fmt"
+import (
+	"strings"
+)
 
 // LinuxDistribution is of type int
 type LinuxDistribution int
@@ -12,23 +14,45 @@ const (
 
 // DistroInfo contains all the information relating to a linux distribution
 type DistroInfo struct {
-	distribution LinuxDistribution
-	name         string
-	release      string
+	Distribution  LinuxDistribution
+	Description   string
+	Release       string
+	Codename      string
+	DistributorId string
 }
 
-func getLinuxDistroInfo() *DistroInfo {
+func GetLinuxDistroInfo() *DistroInfo {
 	result := &DistroInfo{}
 	program := NewProgramHelper()
 	// Does lsb_release exist?
 
 	lsbRelease := program.FindProgram("lsb_release")
 	if lsbRelease != nil {
-		stdout, _, err := lsbRelease.Run("-a")
+		stdout, _, err, _ := lsbRelease.Run("-a")
 		if err != nil {
 			return nil
 		}
-		fmt.Println(stdout)
+
+		for _, line := range strings.Split(stdout, "\n") {
+			if strings.Contains(line, ":") {
+				// Iterate lines a
+				details := strings.Split(line, ":")
+				key := strings.TrimSpace(details[0])
+				value := strings.TrimSpace(details[1])
+				switch key {
+				case "Distributor ID":
+					result.DistributorId = value
+				case "Description":
+					result.Description = value
+				case "Release":
+					result.Release = value
+				case "Codename":
+					result.Codename = value
+
+				}
+			}
+		}
+
 	}
 	return result
 }

cmd/prerequisites.go

@@ -51,6 +51,14 @@ var platformbinaryPrerequisites = make(map[string]*binaryPrerequisites)
 func init() {
 	platformbinaryPrerequisites["darwin"] = &binaryPrerequisites{}
 	newDarwinbinaryPrerequisite("clang", "Please install with `xcode-select --install` and try again")
+	platformbinaryPrerequisites["linux"] = &binaryPrerequisites{}
+	linuxInfo := GetLinuxDistroInfo()
+	switch linuxInfo.Distribution {
+	case Ubuntu:
+		newLinuxbinaryPrerequisite("gcc", "Please install with 'sudo apt install build-essential' ")
+	default:
+		newLinuxbinaryPrerequisite("gcc", "Please install with your system package manager.")
+	}
 }
 
 func newDarwinbinaryPrerequisite(name, help string) {
@@ -58,6 +66,11 @@ func newDarwinbinaryPrerequisite(name, help string) {
 	platformbinaryPrerequisites["darwin"].Add(prereq)
 }
 
+func newLinuxbinaryPrerequisite(name, help string) {
+	prereq := newBinaryPrerequisite(name, help)
+	platformbinaryPrerequisites["linux"].Add(prereq)
+}
+
 func CheckBinaryPrerequisites() (*binaryPrerequisites, *binaryPrerequisites, error) {
 	platformPreReqs := platformbinaryPrerequisites[runtime.GOOS]
 	if platformPreReqs == nil {