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Itay Donanhirsh
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,72 @@ | ||
| // Adapted from https://github.com/go-git/go-git. | ||
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| // Package gitignore implements matching file system paths to gitignore patterns that | ||
| // can be automatically read from a git repository tree in the order of definition | ||
| // priorities. It support all pattern formats as specified in the original gitignore | ||
| // documentation, copied below: | ||
| // | ||
| // Pattern format | ||
| // ============== | ||
| // | ||
| // - A blank line matches no files, so it can serve as a separator for readability. | ||
| // | ||
| // - A line starting with # serves as a comment. Put a backslash ("\") in front of | ||
| // the first hash for patterns that begin with a hash. | ||
| // | ||
| // - Trailing spaces are ignored unless they are quoted with backslash ("\"). | ||
| // | ||
| // - An optional prefix "!" which negates the pattern; any matching file excluded | ||
| // by a previous pattern will become included again. It is not possible to | ||
| // re-include a file if a parent directory of that file is excluded. | ||
| // Git doesn’t list excluded directories for performance reasons, so | ||
| // any patterns on contained files have no effect, no matter where they are | ||
| // defined. Put a backslash ("\") in front of the first "!" for patterns | ||
| // that begin with a literal "!", for example, "\!important!.txt". | ||
| // | ||
| // - If the pattern ends with a slash, it is removed for the purpose of the | ||
| // following description, but it would only find a match with a directory. | ||
| // In other words, foo/ will match a directory foo and paths underneath it, | ||
| // but will not match a regular file or a symbolic link foo (this is consistent | ||
| // with the way how pathspec works in general in Git). | ||
| // | ||
| // - If the pattern does not contain a slash /, Git treats it as a shell glob | ||
| // pattern and checks for a match against the pathname relative to the location | ||
| // of the .gitignore file (relative to the toplevel of the work tree if not | ||
| // from a .gitignore file). | ||
| // | ||
| // - Otherwise, Git treats the pattern as a shell glob suitable for consumption | ||
| // by fnmatch(3) with the FNM_PATHNAME flag: wildcards in the pattern will | ||
| // not match a / in the pathname. For example, "Documentation/*.html" matches | ||
| // "Documentation/git.html" but not "Documentation/ppc/ppc.html" or | ||
| // "tools/perf/Documentation/perf.html". | ||
| // | ||
| // - A leading slash matches the beginning of the pathname. For example, | ||
| // "/*.c" matches "cat-file.c" but not "mozilla-sha1/sha1.c". | ||
| // | ||
| // Two consecutive asterisks ("**") in patterns matched against full pathname | ||
| // may have special meaning: | ||
| // | ||
| // - A leading "**" followed by a slash means match in all directories. | ||
| // For example, "**/foo" matches file or directory "foo" anywhere, the same as | ||
| // pattern "foo". "**/foo/bar" matches file or directory "bar" | ||
| // anywhere that is directly under directory "foo". | ||
| // | ||
| // - A trailing "/**" matches everything inside. For example, "abc/**" matches | ||
| // all files inside directory "abc", relative to the location of the | ||
| // .gitignore file, with infinite depth. | ||
| // | ||
| // - A slash followed by two consecutive asterisks then a slash matches | ||
| // zero or more directories. For example, "a/**/b" matches "a/b", "a/x/b", | ||
| // "a/x/y/b" and so on. | ||
| // | ||
| // - Other consecutive asterisks are considered invalid. | ||
| // | ||
| // Copyright and license | ||
| // ===================== | ||
| // | ||
| // Copyright (c) Oleg Sklyar, Silvertern and source{d} | ||
| // | ||
| // The package code was donated to source{d} to include, modify and develop | ||
| // further as a part of the `go-git` project, release it on the license of | ||
| // the whole project or delete it from the project. | ||
| package gitignore |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,32 @@ | ||
| // Adapted from https://github.com/go-git/go-git. | ||
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| package gitignore | ||
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| // Matcher defines a global multi-pattern matcher for gitignore patterns | ||
| type Matcher interface { | ||
| // Match matches patterns in the order of priorities. As soon as an inclusion or | ||
| // exclusion is found, not further matching is performed. | ||
| Match(path []string, isDir bool) bool | ||
| } | ||
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| // NewMatcher constructs a new global matcher. Patterns must be given in the order of | ||
| // increasing priority. That is most generic settings files first, then the content of | ||
| // the repo .gitignore, then content of .gitignore down the path or the repo and then | ||
| // the content command line arguments. | ||
| func NewMatcher(ps []Pattern) Matcher { | ||
| return &matcher{ps} | ||
| } | ||
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| type matcher struct { | ||
| patterns []Pattern | ||
| } | ||
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| func (m *matcher) Match(path []string, isDir bool) bool { | ||
| n := len(m.patterns) | ||
| for i := n - 1; i >= 0; i-- { | ||
| if match := m.patterns[i].Match(path, isDir); match > NoMatch { | ||
| return match == Exclude | ||
| } | ||
| } | ||
| return false | ||
| } |
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| @@ -0,0 +1,155 @@ | ||
| // Adapted from https://github.com/go-git/go-git. | ||
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| package gitignore | ||
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| import ( | ||
| "path/filepath" | ||
| "strings" | ||
| ) | ||
|
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| // MatchResult defines outcomes of a match, no match, exclusion or inclusion. | ||
| type MatchResult int | ||
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| const ( | ||
| // NoMatch defines the no match outcome of a match check | ||
| NoMatch MatchResult = iota | ||
| // Exclude defines an exclusion of a file as a result of a match check | ||
| Exclude | ||
| // Include defines an explicit inclusion of a file as a result of a match check | ||
| Include | ||
| ) | ||
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| const ( | ||
| inclusionPrefix = "!" | ||
| zeroToManyDirs = "**" | ||
| patternDirSep = "/" | ||
| ) | ||
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| // Pattern defines a single gitignore pattern. | ||
| type Pattern interface { | ||
| // Match matches the given path to the pattern. | ||
| Match(path []string, isDir bool) MatchResult | ||
| } | ||
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| type pattern struct { | ||
| domain []string | ||
| pattern []string | ||
| inclusion bool | ||
| dirOnly bool | ||
| isGlob bool | ||
| } | ||
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| // ParsePattern parses a gitignore pattern string into the Pattern structure. | ||
| func ParsePattern(p string, domain []string) Pattern { | ||
| res := pattern{domain: domain} | ||
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| if strings.HasPrefix(p, inclusionPrefix) { | ||
| res.inclusion = true | ||
| p = p[1:] | ||
| } | ||
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| if !strings.HasSuffix(p, "\\ ") { | ||
| p = strings.TrimRight(p, " ") | ||
| } | ||
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| if strings.HasSuffix(p, patternDirSep) { | ||
| res.dirOnly = true | ||
| p = p[:len(p)-1] | ||
| } | ||
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| if strings.Contains(p, patternDirSep) { | ||
| res.isGlob = true | ||
| } | ||
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| res.pattern = strings.Split(p, patternDirSep) | ||
| return &res | ||
| } | ||
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| func (p *pattern) Match(path []string, isDir bool) MatchResult { | ||
| if len(path) <= len(p.domain) { | ||
| return NoMatch | ||
| } | ||
| for i, e := range p.domain { | ||
| if path[i] != e { | ||
| return NoMatch | ||
| } | ||
| } | ||
|
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| path = path[len(p.domain):] | ||
| if p.isGlob && !p.globMatch(path, isDir) { | ||
| return NoMatch | ||
| } else if !p.isGlob && !p.simpleNameMatch(path, isDir) { | ||
| return NoMatch | ||
| } | ||
|
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| if p.inclusion { | ||
| return Include | ||
| } | ||
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| return Exclude | ||
| } | ||
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| func (p *pattern) simpleNameMatch(path []string, isDir bool) bool { | ||
| for i, name := range path { | ||
| if match, err := filepath.Match(p.pattern[0], name); err != nil { | ||
| return false | ||
| } else if !match { | ||
| continue | ||
| } | ||
| if p.dirOnly && !isDir && i == len(path)-1 { | ||
| return false | ||
| } | ||
| return true | ||
| } | ||
| return false | ||
| } | ||
|
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| func (p *pattern) globMatch(path []string, isDir bool) bool { | ||
| matched := false | ||
| canTraverse := false | ||
| for i, pattern := range p.pattern { | ||
| if pattern == "" { | ||
| canTraverse = false | ||
| continue | ||
| } | ||
| if pattern == zeroToManyDirs { | ||
| if i == len(p.pattern)-1 { | ||
| break | ||
| } | ||
| canTraverse = true | ||
| continue | ||
| } | ||
| if strings.Contains(pattern, zeroToManyDirs) { | ||
| return false | ||
| } | ||
| if len(path) == 0 { | ||
| return false | ||
| } | ||
| if canTraverse { | ||
| canTraverse = false | ||
| for len(path) > 0 { | ||
| e := path[0] | ||
| path = path[1:] | ||
| if match, err := filepath.Match(pattern, e); err != nil { | ||
| return false | ||
| } else if match { | ||
| matched = true | ||
| break | ||
| } else if len(path) == 0 { | ||
| // if nothing left then fail | ||
| matched = false | ||
| } | ||
| } | ||
| } else { | ||
| if match, err := filepath.Match(pattern, path[0]); err != nil || !match { | ||
| return false | ||
| } | ||
| matched = true | ||
| path = path[1:] | ||
| } | ||
| } | ||
| if matched && p.dirOnly && !isDir && len(path) == 0 { | ||
| matched = false | ||
| } | ||
| return matched | ||
| } |