85 lines
1.8 KiB
Go
85 lines
1.8 KiB
Go
// Copyright 2019 The Hugo Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package hugofs
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import (
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"errors"
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"path/filepath"
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"strings"
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"github.com/gohugoio/hugo/hugofs/glob"
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"github.com/spf13/afero"
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)
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// Glob walks the fs and passes all matches to the handle func.
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// The handle func can return true to signal a stop.
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func Glob(fs afero.Fs, pattern string, handle func(fi FileMetaInfo) (bool, error)) error {
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pattern = glob.NormalizePath(pattern)
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if pattern == "" {
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return nil
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}
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g, err := glob.GetGlob(pattern)
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if err != nil {
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return nil
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}
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hasSuperAsterisk := strings.Contains(pattern, "**")
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levels := strings.Count(pattern, "/")
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root := glob.ResolveRootDir(pattern)
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// Signals that we're done.
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done := errors.New("done")
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wfn := func(p string, info FileMetaInfo, err error) error {
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p = glob.NormalizePath(p)
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if info.IsDir() {
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if !hasSuperAsterisk {
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// Avoid walking to the bottom if we can avoid it.
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if p != "" && strings.Count(p, "/") >= levels {
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return filepath.SkipDir
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}
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}
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return nil
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}
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if g.Match(p) {
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d, err := handle(info)
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if err != nil {
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return err
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}
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if d {
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return done
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}
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}
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return nil
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}
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w := NewWalkway(WalkwayConfig{
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Root: root,
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Fs: fs,
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WalkFn: wfn,
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})
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err = w.Walk()
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if err != done {
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return err
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}
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return nil
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}
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