Initial version

cli.go

@@ -0,0 +1,66 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"os"
+
+	"github.com/arl/gitstatus/format/tmux"
+	"gopkg.in/yaml.v2"
+)
+
+func check(err error, quiet bool) {
+	if err != nil {
+		if !quiet {
+			fmt.Println("error:", err)
+		}
+		os.Exit(1)
+	}
+}
+
+const version = "0.1"
+const usage = `gitstatus ` + version + `
+Usage: gitstatus [options] [dir]
+
+gitstatus prints the status of a Git working tree.
+If directory is not given, it default to the working directory.  
+
+Options:
+  -q              be quiet. In case of errors, don't print nothing.
+  -fmt            output format, defaults to json.
+      json        prints status as a JSON object.
+      tmux        prints status as a tmux format string.
+  -cfg cfgfile    gitstatus output configuration file.
+  -printcfg       prints default configuration file.
+`
+
+var defaultCfg = Config{Tmux: tmux.DefaultCfg}
+
+func parseOptions() (dir string, format string, quiet bool, cfg Config) {
+	fmtOpt := flag.String("fmt", "json", "")
+	cfgOpt := flag.String("cfg", "", "")
+	printCfgOpt := flag.Bool("printcfg", false, "")
+	quietOpt := flag.Bool("q", false, "")
+	flag.Usage = func() {
+		fmt.Println(usage)
+	}
+	flag.Parse()
+	dir = "."
+	if flag.NArg() > 0 {
+		dir = flag.Arg(0)
+	}
+	cfg = defaultCfg
+	if *printCfgOpt {
+		enc := yaml.NewEncoder(os.Stdout)
+		check(enc.Encode(&defaultCfg), *quietOpt)
+		enc.Close()
+		os.Exit(0)
+	}
+	if *cfgOpt != "" {
+		f, err := os.Open(*cfgOpt)
+		check(err, *quietOpt)
+		dec := yaml.NewDecoder(f)
+		check(dec.Decode(&cfg), *quietOpt)
+	}
+	return dir, *fmtOpt, *quietOpt, cfg
+}

config.go

@@ -0,0 +1,8 @@
+package main
+
+import "github.com/arl/gitstatus/format/tmux"
+
+// Config configures output formatting.
+type Config struct {
+	Tmux tmux.Config
+}

go.mod

@@ -0,0 +1,8 @@
+module github.com/arl/gitmux
+
+go 1.10
+
+require (
+	github.com/arl/gitstatus v0.3.1
+	gopkg.in/yaml.v2 v2.2.4
+)

go.sum

@@ -0,0 +1,14 @@
+github.com/arl/gitstatus v0.3.1 h1:KIv92sf+Ce6E6qGXrx/WEl76lDwmR/ibtsExvCp8yPM=
+github.com/arl/gitstatus v0.3.1/go.mod h1:6QjgTVY8epnMyZyJN4QjEY5WZZUCNfJsCFSjkfzaLFA=
+github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
+github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.4 h1:/eiJrUcujPVeJ3xlSWaiNi3uSVmDGBK1pDHUHAnao1I=
+gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=

main.go

@@ -0,0 +1,45 @@
+package main
+
+import (
+	"errors"
+	"fmt"
+
+	"github.com/arl/gitstatus"
+	"github.com/arl/gitstatus/format/json"
+	"github.com/arl/gitstatus/format/tmux"
+)
+
+var errUnknownOutputFormat = errors.New("unknown output format")
+
+func main() {
+	// parse cli options.
+	dir, format, quiet, cfg := parseOptions()
+
+	// handle directory change.
+	if dir != "." {
+		popDir, err := pushdir(dir)
+		check(err, quiet)
+		defer func() {
+			check(popDir(), quiet)
+		}()
+	}
+
+	// retrieve git status.
+	st, err := gitstatus.New()
+	check(err, quiet)
+
+	// register formaters
+	formaters := make(map[string]gitstatus.Formater)
+	formaters["json"] = &json.Formater{}
+	formaters["tmux"] = &tmux.Formater{Config: cfg.Tmux}
+
+	formater, ok := formaters[format]
+	if !ok {
+		check(errUnknownOutputFormat, quiet)
+	}
+
+	// format and print
+	out, err := formater.Format(st)
+	check(err, quiet)
+	fmt.Print(out)
+}

pushd.go

@@ -0,0 +1,19 @@
+package main
+
+import "os"
+
+type popdir func() error
+
+func pushdir(dir string) (popdir, error) {
+	pwd, err := os.Getwd()
+	if err != nil {
+		return nil, err
+	}
+
+	err = os.Chdir(dir)
+	if err != nil {
+		return nil, err
+	}
+
+	return func() error { return os.Chdir(pwd) }, nil
+}