// uses the --check option in git-diff to check for invalid whitespace
func (f *fileToCheck) GitDiffCheck() error {
out, err := git.Command("diff", "--check", "--cached", "--color=always", "--", f.Path)
if err != nil {
return fmt.Errorf("git-diff --check failed:\n%s", indentLines(out, 1))
}
return nil
}
// verifies certain keywords aren't being added
func (f *fileToCheck) VerifyNoUncommittables() error {
out, err := git.Command("diff", "--exit-code", "--cached", "--color=always", "--", f.Path)
if err == nil {
return nil
}
for _, line := range bytes.Split(out, []byte("\n")) {
if uncommitablesRegexp.Match(line) {
return fmt.Errorf("forbidden string found:\n%s", indentLines(out, 1))
}
}
return nil
}
// Assemble list of files to check. Ask git which files have changes and weren't deleted
func changedFiles(results chan<- *fileToCheck) {
defer close(results)
out, err := git.Command("diff-index", "HEAD", "--cached", "--name-only", "-z", "--diff-filter=ACRMT")
if err != nil {
fmt.Printf("ERROR: git-diff-index: %s\n%s\n", err, out)
os.Exit(2)
// FIXME: This explodes for first commit
}
for _, chunk := range bytes.Split(out, []byte{'\x00'}) {
if len(chunk) == 0 {
continue
}
results <- &fileToCheck{Path: string(chunk)}
}
}