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Replace gobwas/glob package #35478
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,184 @@ | ||
| // Copyright 2025 The Gitea Authors. All rights reserved. | ||
| // SPDX-License-Identifier: MIT | ||
|
|
||
| package glob | ||
|
|
||
| import ( | ||
| "errors" | ||
| "fmt" | ||
| "regexp" | ||
|
|
||
| "code.gitea.io/gitea/modules/util" | ||
| ) | ||
|
|
||
| // Reference: https://github.com/gobwas/glob/blob/master/glob.go | ||
|
|
||
| type Glob interface { | ||
| Match(string) bool | ||
| } | ||
|
|
||
| type globCompiler struct { | ||
| nonSeparatorChars string | ||
| globPattern []rune | ||
| regexpPattern string | ||
| regexp *regexp.Regexp | ||
| pos int | ||
| } | ||
|
|
||
| // compileChars compiles character class patterns like [abc] or [!abc] | ||
| func (g *globCompiler) compileChars() (string, error) { | ||
| result := "" | ||
| if g.pos < len(g.globPattern) && g.globPattern[g.pos] == '!' { | ||
| g.pos++ | ||
| result += "^" | ||
| } | ||
|
|
||
| for g.pos < len(g.globPattern) { | ||
| c := g.globPattern[g.pos] | ||
| g.pos++ | ||
|
|
||
| if c == ']' { | ||
| return "[" + result + "]", nil | ||
| } | ||
|
|
||
| if c == '\\' { | ||
| if g.pos >= len(g.globPattern) { | ||
| return "", errors.New("unterminated character class escape") | ||
| } | ||
| result += "\\" + string(g.globPattern[g.pos]) | ||
| g.pos++ | ||
| } else { | ||
| result += string(c) | ||
| } | ||
| } | ||
|
|
||
| return "", errors.New("unterminated character class") | ||
| } | ||
|
|
||
| // compile compiles the glob pattern into a regular expression | ||
| func (g *globCompiler) compile(subPattern bool) (string, error) { | ||
| result := "" | ||
|
|
||
| for g.pos < len(g.globPattern) { | ||
| c := g.globPattern[g.pos] | ||
| g.pos++ | ||
|
|
||
| if subPattern && c == '}' { | ||
| return "(" + result + ")", nil | ||
| } | ||
|
|
||
| switch c { | ||
| case '*': | ||
| if g.pos < len(g.globPattern) && g.globPattern[g.pos] == '*' { | ||
| g.pos++ | ||
| result += ".*" // match any sequence of characters | ||
| } else { | ||
| result += g.nonSeparatorChars + "*" // match any sequence of non-separator characters | ||
| } | ||
| case '?': | ||
| result += g.nonSeparatorChars // match any single non-separator character | ||
| case '[': | ||
| chars, err := g.compileChars() | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
| result += chars | ||
| case '{': | ||
| subResult, err := g.compile(true) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
| result += subResult | ||
| case ',': | ||
| if subPattern { | ||
| result += "|" | ||
| } else { | ||
| result += "," | ||
| } | ||
| case '\\': | ||
| if g.pos >= len(g.globPattern) { | ||
| return "", errors.New("no character to escape") | ||
| } | ||
| result += "\\" + string(g.globPattern[g.pos]) | ||
| g.pos++ | ||
| case '.', '+', '^', '$', '(', ')', '|': | ||
| result += "\\" + string(c) // escape regexp special characters | ||
| default: | ||
| result += string(c) | ||
| } | ||
| } | ||
|
|
||
| return result, nil | ||
| } | ||
|
|
||
| func newGlobCompiler(pattern string, separators ...rune) (Glob, error) { | ||
| g := &globCompiler{globPattern: []rune(pattern)} | ||
|
|
||
| // Escape separators for use in character class | ||
| escapedSeparators := regexp.QuoteMeta(string(separators)) | ||
| if escapedSeparators != "" { | ||
| g.nonSeparatorChars = "[^" + escapedSeparators + "]" | ||
| } else { | ||
| g.nonSeparatorChars = "." | ||
| } | ||
|
|
||
| compiled, err := g.compile(false) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| g.regexpPattern = "^" + compiled + "$" | ||
|
|
||
| regex, err := regexp.Compile(g.regexpPattern) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to compile regexp: %w", err) | ||
| } | ||
|
|
||
| g.regexp = regex | ||
| return g, nil | ||
| } | ||
|
|
||
| func (g *globCompiler) Match(s string) bool { | ||
| return g.regexp.MatchString(s) | ||
| } | ||
|
|
||
| func Compile(pattern string, separators ...rune) (Glob, error) { | ||
| return newGlobCompiler(pattern, separators...) | ||
| } | ||
|
|
||
| func MustCompile(pattern string, separators ...rune) Glob { | ||
| g, err := Compile(pattern, separators...) | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
| return g | ||
| } | ||
|
|
||
| func IsSpecialByte(c byte) bool { | ||
| return c == '*' || c == '?' || c == '\\' || c == '[' || c == ']' || c == '{' || c == '}' | ||
| } | ||
|
|
||
| // QuoteMeta returns a string that quotes all glob pattern meta characters | ||
| // inside the argument text; For example, QuoteMeta(`{foo*}`) returns `\[foo\*\]`. | ||
| // Reference: https://github.com/gobwas/glob/blob/master/glob.go | ||
| func QuoteMeta(s string) string { | ||
| pos := 0 | ||
| for pos < len(s) && !IsSpecialByte(s[pos]) { | ||
| pos++ | ||
| } | ||
| if pos == len(s) { | ||
| return s | ||
| } | ||
| b := make([]byte, pos+2*(len(s)-pos)) | ||
| copy(b, s[0:pos]) | ||
| to := pos | ||
| for ; pos < len(s); pos++ { | ||
| if IsSpecialByte(s[pos]) { | ||
| b[to] = '\\' | ||
| to++ | ||
| } | ||
| b[to] = s[pos] | ||
| to++ | ||
| } | ||
| return util.UnsafeBytesToString(b[0:to]) | ||
| } | ||
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