101 lines
2.1 KiB
Go
101 lines
2.1 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 glob
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import (
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"path"
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"path/filepath"
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"strings"
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"sync"
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"github.com/gobwas/glob"
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"github.com/gobwas/glob/syntax"
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)
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type globErr struct {
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glob glob.Glob
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err error
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}
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var (
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globCache = make(map[string]globErr)
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globMu sync.RWMutex
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)
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func GetGlob(pattern string) (glob.Glob, error) {
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var eg globErr
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globMu.RLock()
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var found bool
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eg, found = globCache[pattern]
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globMu.RUnlock()
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if found {
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return eg.glob, eg.err
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}
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var err error
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g, err := glob.Compile(strings.ToLower(pattern), '/')
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eg = globErr{g, err}
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globMu.Lock()
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globCache[pattern] = eg
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globMu.Unlock()
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return eg.glob, eg.err
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}
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func NormalizePath(p string) string {
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return strings.Trim(path.Clean(filepath.ToSlash(strings.ToLower(p))), "/.")
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}
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// ResolveRootDir takes a normalized path on the form "assets/**.json" and
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// determines any root dir, i.e. any start path without any wildcards.
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func ResolveRootDir(p string) string {
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parts := strings.Split(path.Dir(p), "/")
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var roots []string
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for _, part := range parts {
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if HasGlobChar(part) {
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break
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}
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roots = append(roots, part)
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}
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if len(roots) == 0 {
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return ""
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}
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return strings.Join(roots, "/")
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}
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// FilterGlobParts removes any string with glob wildcard.
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func FilterGlobParts(a []string) []string {
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b := a[:0]
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for _, x := range a {
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if !HasGlobChar(x) {
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b = append(b, x)
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}
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}
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return b
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}
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// HasGlobChar returns whether s contains any glob wildcards.
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func HasGlobChar(s string) bool {
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for i := 0; i < len(s); i++ {
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if syntax.Special(s[i]) {
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return true
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}
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}
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return false
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}
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