fix: not validated

1 files changed, 49 insertions, 8 deletions

diff --git a/main.go b/main.go
index 8bf3496..34e30cb 100644
--- a/main.go
+++ b/main.go
@@ -19,6 +19,31 @@ import (
 	"github.com/Masterminds/semver/v3"
 )
 
+var (
+	cmdExamples = `
+**stdin**
+❯ echo "1.1.1\n1.2.1" | bumpver patch -
+1.2.2
+
+**file**
+❯ echo v0.1.0 > VERSION
+❯ bumpver patch VERSION
+0.1.1
+
+**a minor**
+❯ bumpver minor <(git tag -l)
+3.4.0
+
+**a major**
+❯ bumpver major <(git tag -l)
+4.0.0
+
+**create new prerelease**
+❯ echo "0.1.0" | bumpver patch --prerelease --prerelease-fmt 'rc.$BumpInt' -
+0.1.1-rc.0
+`
+)
+
 // FmtPart format keywords
 type FmtPart string
 
@@ -59,8 +84,10 @@ func (prf *preReleaseVersion) incPreRelease() (semver.Version, error) {
 			// current int ++
 			currentVerStrPart := currentPreReleaseParts[idx]
 			currentVerPart, err := strconv.Atoi(currentVerStrPart)
+			// the current part is not an int, make it one
 			if err != nil {
-				return semver.Version{}, err
+				newPreReleaseParts = append(newPreReleaseParts, "0")
+				continue
 			}
 			newPreReleaseParts = append(newPreReleaseParts, strconv.Itoa(currentVerPart+1))
 		case string(KeyArg):
@@ -107,10 +134,11 @@ var (
 	preReleaseFmtArgs = make(map[string]string)
 	preRelease        bool
 	rootCmd           = &cobra.Command{
-		Use:   "bumpver part [major|minor|patch] file [-|file]",
-		Short: "A tool for bumping semver git tags.",
-		Args:  cobra.MatchAll(cobra.ExactArgs(2)),
-		Long:  `Inspired by the python bump2version tool.`,
+		Use:     "bumpver part [major|minor|patch] file [-|file]",
+		Short:   "A tool for bumping semver git tags.",
+		Example: cmdExamples,
+		Args:    cobra.MatchAll(cobra.ExactArgs(2)),
+		Long:    `Inspired by the python bump2version tool.`,
 		RunE: func(cmd *cobra.Command, argz []string) error {
 			part := argz[0]
 			var err error
@@ -157,9 +185,13 @@ var (
 			case "patch":
 				nextVersion = lastVersion.IncPatch()
 			case "prerelease":
+				parsedFmt, err := parseFmtString(preReleaseFmtString)
+				if err != nil {
+					return err
+				}
 				preRelVersion := preReleaseVersion{
 					// []string{"PR", "$KeyArg PR_NUM"},
-					parseFmtString(preReleaseFmtString),
+					parsedFmt,
 					preReleaseFmtArgs,
 					lastVersion,
 					versionPart,
@@ -207,8 +239,17 @@ func checkArgPart(arg string) error {
 	return nil
 }
 
-func parseFmtString(toSplit string) []string {
-	return strings.Split(toSplit, ".")
+func parseFmtString(toSplit string) ([]string, error) {
+	splitted := strings.Split(toSplit, ".")
+	for _, section := range splitted {
+		keyWord := strings.Split(section, " ")
+		if keyWord[0] == string(KeyArg) {
+			if len(keyWord) != 2 {
+				return []string{}, errors.New("$KeyArg expected to find an argument")
+			}
+		}
+	}
+	return strings.Split(toSplit, "."), nil
 }
 
 func main() {