update vendor

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

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

@@ -0,0 +1,80 @@
+package gitignore
+
+import (
+	"bufio"
+	"io"
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+type IgnoreMatcher interface {
+	Match(path string, isDir bool) bool
+}
+
+type DummyIgnoreMatcher bool
+
+func (d DummyIgnoreMatcher) Match(path string, isDir bool) bool {
+	return bool(d)
+}
+
+type gitIgnore struct {
+	ignorePatterns scanStrategy
+	acceptPatterns scanStrategy
+	path           string
+}
+
+func NewGitIgnore(gitignore string, base ...string) (IgnoreMatcher, error) {
+	var path string
+	if len(base) > 0 {
+		path = base[0]
+	} else {
+		path = filepath.Dir(gitignore)
+	}
+
+	file, err := os.Open(gitignore)
+	if err != nil {
+		return nil, err
+	}
+	defer file.Close()
+
+	return NewGitIgnoreFromReader(path, file), nil
+}
+
+func NewGitIgnoreFromReader(path string, r io.Reader) IgnoreMatcher {
+	g := gitIgnore{
+		ignorePatterns: newIndexScanPatterns(),
+		acceptPatterns: newIndexScanPatterns(),
+		path:           path,
+	}
+	scanner := bufio.NewScanner(r)
+	for scanner.Scan() {
+		line := strings.Trim(scanner.Text(), " ")
+		if len(line) == 0 || strings.HasPrefix(line, "#") {
+			continue
+		}
+		if strings.HasPrefix(line, `\#`) {
+			line = strings.TrimPrefix(line, `\`)
+		}
+
+		if strings.HasPrefix(line, "!") {
+			g.acceptPatterns.add(strings.TrimPrefix(line, "!"))
+		} else {
+			g.ignorePatterns.add(line)
+		}
+	}
+	return g
+}
+
+func (g gitIgnore) Match(path string, isDir bool) bool {
+	relativePath, err := filepath.Rel(g.path, path)
+	if err != nil {
+		return false
+	}
+	relativePath = filepath.ToSlash(relativePath)
+
+	if g.acceptPatterns.match(relativePath, isDir) {
+		return false
+	}
+	return g.ignorePatterns.match(relativePath, isDir)
+}