update vendor

Signed-off-by: Roland.Ma <rolandma@yunify.com>

vendor/github.com/monochromegane/go-gitignore/initial_holder.go

@@ -0,0 +1,62 @@
+package gitignore
+
+import "strings"
+
+const initials = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ."
+
+type initialPatternHolder struct {
+	patterns      initialPatterns
+	otherPatterns *patterns
+}
+
+func newInitialPatternHolder() initialPatternHolder {
+	return initialPatternHolder{
+		patterns:      initialPatterns{m: map[byte]*patterns{}},
+		otherPatterns: &patterns{},
+	}
+}
+
+func (h *initialPatternHolder) add(pattern string) {
+	trimedPattern := strings.TrimPrefix(pattern, "/")
+	if strings.IndexAny(trimedPattern[0:1], initials) != -1 {
+		h.patterns.set(trimedPattern[0], newPatternForEqualizedPath(pattern))
+	} else {
+		h.otherPatterns.add(newPatternForEqualizedPath(pattern))
+	}
+}
+
+func (h initialPatternHolder) match(path string, isDir bool) bool {
+	if h.patterns.size() == 0 && h.otherPatterns.size() == 0 {
+		return false
+	}
+	if patterns, ok := h.patterns.get(path[0]); ok {
+		if patterns.match(path, isDir) {
+			return true
+		}
+	}
+	return h.otherPatterns.match(path, isDir)
+}
+
+type initialPatterns struct {
+	m map[byte]*patterns
+}
+
+func (p *initialPatterns) set(initial byte, pattern pattern) {
+	if ps, ok := p.m[initial]; ok {
+		ps.add(pattern)
+	} else {
+		patterns := &patterns{}
+		patterns.add(pattern)
+		p.m[initial] = patterns
+
+	}
+}
+
+func (p initialPatterns) get(initial byte) (*patterns, bool) {
+	patterns, ok := p.m[initial]
+	return patterns, ok
+}
+
+func (p initialPatterns) size() int {
+	return len(p.m)
+}