/
main.go
110 lines (101 loc) · 2.39 KB
/
main.go
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package main
import (
"flag"
"fmt"
"io/ioutil"
"log"
"os"
"os/exec"
"strings"
"github.com/shiraily/go-incr/increment"
)
func main() {
type argVersion struct {
name string
value bool
}
argVersions := []argVersion{
{name: "major"},
{name: "minor"},
{name: "patch"},
{name: "build"},
}
for i, argVersion := range argVersions {
flag.BoolVar(
&argVersions[i].value,
argVersion.name,
false,
fmt.Sprintf("increment %s version", argVersion.name),
)
}
preserveSuffix := flag.Bool("suffix", false, "preserve suffix (pre release version / build metadata)")
// TODO detailed usage for git option
git := flag.Bool("git", false, "git commit -m 'Update version'")
flag.Parse()
args := flag.Args()
argVersions = append([]argVersion{{}}, argVersions...)
var filePath string
if len(args) == 0 {
filePath = "VERSION"
} else {
filePath = args[0]
}
buf, err := ioutil.ReadFile(filePath)
if err != nil {
log.Fatal(err)
}
version := string(buf)
fi, err := os.Stat(filePath)
if err != nil {
log.Fatal(err)
}
var target increment.VersionNumber
for i, argVersion := range argVersions {
if argVersion.value {
target = increment.VersionNumber(i)
break
}
}
incremented, err := increment.Increment(version, target, *preserveSuffix)
if err != nil {
log.Fatal(err)
}
if err := ioutil.WriteFile(filePath, []byte(incremented), fi.Mode()); err != nil {
log.Fatal(err)
}
if !*git {
fmt.Println("before:", strings.TrimSpace(version))
fmt.Println("after :", strings.TrimSpace(incremented))
return
}
// TODO use go-git?
if err := isOnlyVersionFileStaged(filePath); err != nil {
log.Fatal(err)
}
cmd := exec.Command("git", "commit", "-m", "Update version", filePath)
if err := cmd.Run(); err != nil {
log.Fatal(err)
}
fmt.Println("git commit succeeded")
// TODO can preserve color
cmd = exec.Command("git", "diff", "HEAD^")
output, err := cmd.Output()
if err != nil {
log.Fatal(err)
}
fmt.Print(string(output))
return
}
func isOnlyVersionFileStaged(targetFile string) error {
cmd := exec.Command("git", "diff", "--cached", "--name-only")
outputByte, err := cmd.Output()
if err != nil {
return fmt.Errorf("git diff: %s", err)
}
output := string(outputByte)
lines := strings.Split(output, "\n")
if len(lines) > 2 || (lines[0] != "" && lines[0] != targetFile) {
return fmt.Errorf("only target version file can be staged:\n%s", output)
}
return nil
}