keep isolating use of os.Exec("git")

1 files changed, 139 insertions, 0 deletions

diff --git a/reloadTags.go b/reloadTags.go
new file mode 100644
index 0000000..e8409dc
--- /dev/null
+++ b/reloadTags.go
@@ -0,0 +1,139 @@
+package gitpb
+
+import (
+	"path/filepath"
+	"slices"
+	"strings"
+	"time"
+
+	"go.wit.com/lib/gui/shell"
+	"go.wit.com/log"
+	timestamppb "google.golang.org/protobuf/types/known/timestamppb"
+)
+
+// reload the tags
+func (repo *Repo) reloadGitTags() error {
+	// todo: look for changes in the tags?
+	repo.Tags = new(GitTags)
+
+	tags := []string{"%(objectname)", "%(creatordate)", "%(*authordate)", "%(refname)", "%(subject)"}
+	format := strings.Join(tags, "_,,,_")
+	cmd := []string{"git", "for-each-ref", "--sort=taggerdate", "--format", format}
+	// log.Info("RUNNING:", strings.Join(cmd, " "))
+	result := shell.PathRunQuiet(repo.FullPath, cmd)
+	if result.Error != nil {
+		log.Warn("git for-each-ref error:", result.Error)
+		return result.Error
+	}
+
+	lines := result.Stdout
+	// reverse the git order
+	slices.Reverse(lines)
+
+	var refname string
+	var hash string
+	var subject string
+	var ctime *timestamppb.Timestamp
+	var atime *timestamppb.Timestamp
+
+	for i, line := range lines {
+		var parts []string
+		parts = make([]string, 0)
+		parts = strings.Split(line, "_,,,_")
+		if len(parts) != 5 {
+			log.Info("tag error:", i, parts)
+			continue
+		}
+		hash = parts[0]
+		if parts[1] != "" {
+			tmp := getGitDateStamp(parts[1])
+			ctime = timestamppb.New(tmp)
+		}
+		if parts[2] != "" {
+			tmp := getGitDateStamp(parts[2])
+			atime = timestamppb.New(tmp)
+		}
+		refname = parts[3]
+		subject = parts[4]
+
+		newr := GitTag{
+			Refname:     refname,
+			Hash:        hash,
+			Subject:     subject,
+			Creatordate: ctime,
+			Authordate:  atime,
+		}
+
+		repo.Tags.Append(&newr)
+	}
+	return nil
+}
+
+// converts a git for-each-ref date. "Wed Feb 7 10:13:38 2024 -0600"
+func getGitDateStamp(gitdefault string) time.Time {
+	// now := time.Now().Format("Wed Feb 7 10:13:38 2024 -0600")
+	const gitLayout = "Mon Jan 2 15:04:05 2006 -0700"
+	tagTime, err := time.Parse(gitLayout, gitdefault)
+	if err != nil {
+		log.Warn("GOT THIS IN PARSE AAA." + gitdefault + ".AAA")
+		log.Warn(err)
+		return time.Now()
+	}
+	return tagTime
+}
+
+func (tag *GitTag) GetAge() time.Duration {
+	return time.Since(tag.GetAuthordate().AsTime())
+}
+
+func (repo *Repo) NewestTag() *GitTag {
+	loop := repo.Tags.SortByAge()
+	for loop.Scan() {
+		r := loop.Next()
+		return r
+	}
+	return nil
+}
+
+func (repo *Repo) LocalTagExists(findname string) bool {
+	loop := repo.Tags.SortByRefname()
+	for loop.Scan() {
+		ref := loop.Next()
+		// log.Info(repo.GoPath, ref.Refname)
+		if strings.HasPrefix(ref.Refname, "refs/remotes") {
+			continue
+		}
+		_, tagname := filepath.Split(ref.Refname)
+		// log.Info("tag:", path, tagname, "from", repo.GoPath)
+		if tagname == findname {
+			// log.Info("found tag:", path, tagname, "from", repo.GoPath)
+			return true
+		}
+	}
+	return false
+}
+
+// returns true if 'taggy' is _ONLY_ a local tag
+// this means you can not do a git pull or git push on it
+func (repo *Repo) IsOnlyLocalTag(taggy string) bool {
+	// first make sure the tag is actually even local
+	if !repo.LocalTagExists(taggy) {
+		// this means it's not even local now.
+		return false
+	}
+	// okay, taggy exists, does it exist in a remote repo?
+	loop := repo.Tags.SortByRefname()
+	for loop.Scan() {
+		ref := loop.Next()
+		tagname := ref.Refname
+		if strings.HasPrefix(tagname, "refs/remotes") {
+			path, filename := filepath.Split(tagname)
+			if filename == taggy {
+				log.Log(GITPB, "found tag:", path, filename, "from", repo.GetGoPath())
+				return false
+			}
+		}
+	}
+	// we couldn't find the local tag anywhere remote, so it's probably only local
+	return true
+}