blob: 889ece11fed9744ae68840111ceaf2f3ae2abce7 [file] [log] [blame]
// Copyright 2020 The LUCI Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package base
import (
"io/ioutil"
"os"
"path/filepath"
"go.starlark.net/starlark"
)
// ExpandDirectories recursively traverses directories in `paths` discovering
// *.star files in them.
//
// If `paths` is empty, expands `.`.
//
// Returns the overall list of discovered files.
func ExpandDirectories(paths []string) ([]string, error) {
if len(paths) == 0 {
paths = []string{"."}
}
var files []string
for _, p := range paths {
switch info, err := os.Stat(p); {
case err != nil:
return nil, err
case !info.IsDir():
files = append(files, p)
default:
err := filepath.Walk(p, func(path string, info os.FileInfo, err error) error {
if err == nil && !info.IsDir() && filepath.Ext(info.Name()) == ".star" {
files = append(files, path)
}
return err
})
if err != nil {
return nil, err
}
}
}
return files, nil
}
// PathLoader is an interpreter.Loader that loads files using file system paths.
func PathLoader(path string) (starlark.StringDict, string, error) {
body, err := ioutil.ReadFile(path)
return nil, string(body), err
}