github-release · nullaus · Aug 13, 2018 · Aug 13, 2018
diff --git a/cmd.go b/cmd.go
@@ -376,6 +376,71 @@ func releasecmd(opt Options) error {
 	return nil
 }
 
+func increleasecmd(opt Options) error {
+	cmdopt := opt.IncRelease
+	user := nvls(cmdopt.User, EnvUser)
+	repo := nvls(cmdopt.Repo, EnvRepo)
+	token := nvls(cmdopt.Token, EnvToken)
+
+	vprintln("incremental release...")
+
+	release, _ := LatestRelease(user, repo, token)
+	release = IncrementReleaseVersion(release)
+
+	tag := nvls(cmdopt.Tag, release.TagName)
+	name := nvls(cmdopt.Name, tag)
+	desc := nvls(cmdopt.Desc, tag)
+	target := nvls(cmdopt.Target)
+	draft := cmdopt.Draft
+	prerelease := cmdopt.Prerelease
+
+	if err := ValidateCredentials(user, repo, token, tag); err != nil {
+		return err
+	}
+
+	params := ReleaseCreate{
+		TagName:         release.TagName,
+		TargetCommitish: target,
+		Name:            name,
+		Body:            desc,
+		Draft:           draft,
+		Prerelease:      prerelease,
+	}
+
+	/* encode params as json */
+	payload, err := json.Marshal(params)
+	if err != nil {
+		return fmt.Errorf("can't encode release creation params, %v", err)
+	}
+	reader := bytes.NewReader(payload)
+
+	URL := nvls(EnvApiEndpoint, github.DefaultBaseURL) + fmt.Sprintf("/repos/%s/%s/releases", user, repo)
+	resp, err := github.DoAuthRequest("POST", URL, "application/json", token, nil, reader)
+	if err != nil {
+		return fmt.Errorf("while submitting %v, %v", string(payload), err)
+	}
+	defer resp.Body.Close()
+
+	vprintln("RESPONSE:", resp)
+	if resp.StatusCode != http.StatusCreated {
+		if resp.StatusCode == 422 {
+			return fmt.Errorf("github returned %v (this is probably because the release already exists)",
+				resp.Status)
+		}
+		return fmt.Errorf("github returned %v", resp.Status)
+	}
+
+	if VERBOSITY != 0 {
+		body, err := ioutil.ReadAll(resp.Body)
+		if err != nil {
+			return fmt.Errorf("error while reading response, %v", err)
+		}
+		vprintln("BODY:", string(body))
+	}
+
+	return nil
+}
+
 func editcmd(opt Options) error {
 	cmdopt := opt.Edit
 	user := nvls(cmdopt.User, EnvUser)

diff --git a/github-release.go b/github-release.go
@@ -46,6 +46,17 @@ type Options struct {
 		Draft      bool   `goptions:"--draft, description='The release is a draft'"`
 		Prerelease bool   `goptions:"-p, --pre-release, description='The release is a pre-release'"`
 	} `goptions:"release"`
+	IncRelease struct {
+		Token      string `goptions:"-s, --security-token, description='Github token (required if $GITHUB_TOKEN not set)'"`
+		User       string `goptions:"-u, --user, description='Github repo user or organisation (required if $GITHUB_USER not set)'"`
+		Repo       string `goptions:"-r, --repo, description='Github repo (required if $GITHUB_REPO not set)'"`
+		Tag        string `goptions:"-t, --tag, description='Git tag to create a release from'"`
+		Name       string `goptions:"-n, --name, description='Name of the release (defaults to tag)'"`
+		Desc       string `goptions:"-d, --description, description='Release description, use - for reading a description from stdin (defaults to tag)'"`
+		Target     string `goptions:"-c, --target, description='Commit SHA or branch to create release of (defaults to the repository default branch)'"`
+		Draft      bool   `goptions:"--draft, description='The release is a draft'"`
+		Prerelease bool   `goptions:"-p, --pre-release, description='The release is a pre-release'"`
+	} `goptions:"increlease"`
 	Edit struct {
 		Token      string `goptions:"-s, --security-token, description='Github token (required if $GITHUB_TOKEN not set)'"`
 		User       string `goptions:"-u, --user, description='Github repo user or organisation (required if $GITHUB_USER not set)'"`
@@ -74,12 +85,13 @@ type Options struct {
 type Command func(Options) error
 
 var commands = map[goptions.Verbs]Command{
-	"download": downloadcmd,
-	"upload":   uploadcmd,
-	"release":  releasecmd,
-	"edit":     editcmd,
-	"delete":   deletecmd,
-	"info":     infocmd,
+	"download":   downloadcmd,
+	"upload":     uploadcmd,
+	"release":    releasecmd,
+	"increlease": increleasecmd,
+	"edit":       editcmd,
+	"delete":     deletecmd,
+	"info":       infocmd,
 }
 
 var (

diff --git a/releases.go b/releases.go
@@ -2,6 +2,7 @@ package main
 
 import (
 	"fmt"
+	"strconv"
 	"strings"
 	"time"
 
@@ -126,6 +127,21 @@ func ReleaseOfTag(user, repo, tag, token string) (*Release, error) {
 	return nil, fmt.Errorf("could not find the release corresponding to tag %s", tag)
 }
 
+func IncrementReleaseVersion(release *Release) *Release {
+	// Handle nil release gracefully
+	version := 0
+	if release != nil {
+		version, _ = strconv.Atoi(release.TagName[1:])
+		version++
+	} else {
+		release = &Release{}
+	}
+
+	release.TagName = fmt.Sprintf("v%d", version)
+
+	return release
+}
+
 /* find the release-id of the specified tag */
 func IdOfTag(user, repo, tag, token string) (int, error) {
 	release, err := ReleaseOfTag(user, repo, tag, token)