Allow unlink/remove by path

main.go

@@ -114,6 +114,87 @@ func splitPackageSpec(spec string) (string, string, error) {
 	return pkg, rel, nil
 }
 
+func resolvePackageSpec(spec string) (string, string, error) {
+	repo, err := repoPath()
+	if err != nil {
+		return "", "", err
+	}
+
+	repoAbs, err := filepath.Abs(repo)
+	if err != nil {
+		return "", "", err
+	}
+
+	spec = expandHome(spec)
+	if filepath.IsAbs(spec) {
+		return resolvePathSpec(spec, repoAbs)
+	}
+
+	clean := filepath.Clean(spec)
+	if strings.HasPrefix(clean, ".") || strings.HasPrefix(clean, string(os.PathSeparator)) {
+		return resolvePathSpec(clean, repoAbs)
+	}
+
+	return splitPackageSpec(spec)
+}
+
+func resolvePathSpec(pathSpec, repoAbs string) (string, string, error) {
+	absPath, err := filepath.Abs(pathSpec)
+	if err != nil {
+		return "", "", err
+	}
+
+	if strings.HasPrefix(absPath, repoAbs+string(os.PathSeparator)) || absPath == repoAbs {
+		rel, err := filepath.Rel(repoAbs, absPath)
+		if err != nil {
+			return "", "", err
+		}
+		parts := strings.Split(rel, string(os.PathSeparator))
+		if len(parts) >= 1 {
+			pkg := parts[0]
+			if len(parts) >= 2 && parts[1] == filesDirName {
+				relPath := filepath.Join(parts[2:]...)
+				return pkg, relPath, nil
+			}
+			return pkg, "", nil
+		}
+	}
+
+	entries, err := os.ReadDir(repoAbs)
+	if err != nil {
+		return "", "", err
+	}
+
+	for _, entry := range entries {
+		if !entry.IsDir() || strings.HasPrefix(entry.Name(), ".") {
+			continue
+		}
+		pkgDir := filepath.Join(repoAbs, entry.Name())
+		configPath := filepath.Join(pkgDir, configFileName)
+		cfg, err := loadConfig(configPath)
+		if err != nil {
+			continue
+		}
+		targetRoot, err := selectTarget(cfg.targets)
+		if err != nil {
+			continue
+		}
+		absTarget, err := filepath.Abs(expandHome(targetRoot))
+		if err != nil {
+			continue
+		}
+		if strings.HasPrefix(absPath, absTarget+string(os.PathSeparator)) || absPath == absTarget {
+			rel, err := filepath.Rel(absTarget, absPath)
+			if err != nil {
+				return "", "", err
+			}
+			return entry.Name(), rel, nil
+		}
+	}
+
+	return "", "", fmt.Errorf("could not resolve %s to a package", pathSpec)
+}
+
 func applyCmd(args []string) error {
 	prune := false
 	for _, arg := range args {
@@ -325,7 +406,7 @@ func unlinkCmd(args []string) error {
 		return err
 	}
 
-	pkgName, relPath, err := splitPackageSpec(pkgSpec)
+	pkgName, relPath, err := resolvePackageSpec(pkgSpec)
 	if err != nil {
 		return err
 	}
@@ -385,7 +466,7 @@ func removeCmd(args []string) error {
 		return err
 	}
 
-	pkgName, relPath, err := splitPackageSpec(pkgSpec)
+	pkgName, relPath, err := resolvePackageSpec(pkgSpec)
 	if err != nil {
 		return err
 	}