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-rw-r--r--plumbing/format/gitignore/matcher.go30
1 files changed, 30 insertions, 0 deletions
diff --git a/plumbing/format/gitignore/matcher.go b/plumbing/format/gitignore/matcher.go
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+++ b/plumbing/format/gitignore/matcher.go
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+package gitignore
+
+// 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
+}
+
+// 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}
+}
+
+type matcher struct {
+ patterns []Pattern
+}
+
+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
+}