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refactor: use FSM for git output parsing
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,75 @@ | ||
| package git | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "strconv" | ||
| "strings" | ||
| "time" | ||
|
|
||
| "golang.org/x/exp/slog" | ||
| ) | ||
|
|
||
| type GitOutput string | ||
|
|
||
| func (gt GitOutput) Commits() ([]Commit, error) { | ||
| output := strings.TrimSpace(string(gt)) | ||
| commits := make([]Commit, 0) | ||
| for _, line := range strings.Split(output, "\n") { | ||
| message, err := extractCommitMessage(line) | ||
| if err != nil { | ||
| slog.Error("failed to extract commit message", "gitlogLine", line) | ||
| return []Commit{}, fmt.Errorf("failed to extract commit message. %w", err) | ||
| } | ||
|
|
||
| commitTime, err := extractTime(line) | ||
| if err != nil { | ||
| slog.Error("failed to extract timestamp", "gitlogLine", line) | ||
| return []Commit{}, fmt.Errorf("failed to extract timestamp. %w", err) | ||
| } | ||
|
|
||
| sha, err := extractSha(line) | ||
| if err != nil { | ||
| slog.Error("failed to extract sha", "gitlogLine", line) | ||
| return []Commit{}, fmt.Errorf("failed to extract sha. %w", err) | ||
| } | ||
|
|
||
| commits = append(commits, Commit{ | ||
| Message: message, | ||
| Time: commitTime, | ||
| Sha: sha, | ||
| }) | ||
| } | ||
| return commits, nil | ||
| } | ||
|
|
||
| func extractCommitMessage(gitlogLine string) (string, error) { | ||
| gitlogLine = strings.TrimSpace(gitlogLine) | ||
| result := gitoutputPattern.FindStringSubmatch(gitlogLine) | ||
| if len(result) < 4 { | ||
| return "", fmt.Errorf("couldn't find commit message in git log. %v", gitlogLine) | ||
| } | ||
|
|
||
| return result[3], nil | ||
| } | ||
|
|
||
| func extractTime(gitlogLine string) (time.Time, error) { | ||
| result := gitoutputPattern.FindStringSubmatch(gitlogLine) | ||
| if len(result) < 2 { | ||
| return time.Time{}, fmt.Errorf("couldn't find timestamp in commit message. %v", gitlogLine) | ||
| } | ||
|
|
||
| timestamp, err := strconv.Atoi(result[1]) | ||
| if err != nil { | ||
| return time.Time{}, fmt.Errorf("failed to extract timestamp in commit message. %w", err) | ||
| } | ||
| return time.Unix(int64(timestamp), 0), nil | ||
| } | ||
|
|
||
| func extractSha(gitlogLine string) (string, error) { | ||
| result := gitoutputPattern.FindStringSubmatch(gitlogLine) | ||
| if len(result) < 3 { | ||
| return "", fmt.Errorf("couldn't find sha in commit message. %v", gitlogLine) | ||
| } | ||
|
|
||
| return result[2], nil | ||
| } |