mirror of https://github.com/gohugoio/hugo.git
100 lines
2.2 KiB
Go
100 lines
2.2 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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"fmt"
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"os"
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"sort"
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"strings"
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"sync"
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"github.com/spf13/afero"
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)
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// Reseter is implemented by some of the stateful filesystems.
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type Reseter interface {
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Reset()
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}
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// DuplicatesReporter reports about duplicate filenames.
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type DuplicatesReporter interface {
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ReportDuplicates() string
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}
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func NewCreateCountingFs(fs afero.Fs) afero.Fs {
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return &createCountingFs{Fs: fs, fileCount: make(map[string]int)}
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}
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// ReportDuplicates reports filenames written more than once.
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func (c *createCountingFs) ReportDuplicates() string {
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c.mu.Lock()
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defer c.mu.Unlock()
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var dupes []string
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for k, v := range c.fileCount {
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if v > 1 {
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dupes = append(dupes, fmt.Sprintf("%s (%d)", k, v))
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}
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}
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if len(dupes) == 0 {
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return ""
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}
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sort.Strings(dupes)
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return strings.Join(dupes, ", ")
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}
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// createCountingFs counts filenames of created files or files opened
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// for writing.
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type createCountingFs struct {
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afero.Fs
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mu sync.Mutex
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fileCount map[string]int
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}
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func (c *createCountingFs) Reset() {
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c.mu.Lock()
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defer c.mu.Unlock()
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c.fileCount = make(map[string]int)
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}
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func (fs *createCountingFs) onCreate(filename string) {
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fs.mu.Lock()
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defer fs.mu.Unlock()
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fs.fileCount[filename] = fs.fileCount[filename] + 1
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}
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func (fs *createCountingFs) Create(name string) (afero.File, error) {
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f, err := fs.Fs.Create(name)
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if err == nil {
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fs.onCreate(name)
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}
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return f, err
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}
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func (fs *createCountingFs) OpenFile(name string, flag int, perm os.FileMode) (afero.File, error) {
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f, err := fs.Fs.OpenFile(name, flag, perm)
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if err == nil && isWrite(flag) {
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fs.onCreate(name)
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}
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return f, err
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}
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