// removeAbandonedFiles removes any files that appear in the Ninja log that are
// not currently build targets.
func removeAbandonedFiles(ctx *blueprint.Context, config *Config,
srcDir, manifestFile string) error {
buildDir := "."
switch config.stage {
case StageBootstrap:
buildDir = miniBootstrapDir
case StagePrimary:
buildDir = bootstrapDir
}
targetRules, err := ctx.AllTargets()
if err != nil {
return fmt.Errorf("error determining target list: %s", err)
}
replacer := strings.NewReplacer(
"@@SrcDir@@", srcDir,
"@@BuildDir@@", BuildDir,
"@@BootstrapManifest@@", manifestFile)
targets := make(map[string]bool)
for target := range targetRules {
replacedTarget := replacer.Replace(target)
targets[filepath.Clean(replacedTarget)] = true
}
filePaths, err := parseNinjaLog(buildDir)
if err != nil {
return err
}
for _, filePath := range filePaths {
isTarget := targets[filePath]
if !isTarget {
err = removeFileAndEmptyDirs(filePath)
if err != nil {
return err
}
}
}
return nil
}
