diff options
Diffstat (limited to 'vendor/gitlab.com/golang-commonmark/markdown/util.go')
| -rw-r--r-- | vendor/gitlab.com/golang-commonmark/markdown/util.go | 264 |
1 files changed, 0 insertions, 264 deletions
diff --git a/vendor/gitlab.com/golang-commonmark/markdown/util.go b/vendor/gitlab.com/golang-commonmark/markdown/util.go deleted file mode 100644 index d821202c..00000000 --- a/vendor/gitlab.com/golang-commonmark/markdown/util.go +++ /dev/null @@ -1,264 +0,0 @@ -// Copyright 2015 The Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package markdown - -import ( - "bytes" - "regexp" - "strings" - "unicode" - - "gitlab.com/golang-commonmark/html" - "gitlab.com/golang-commonmark/mdurl" - "gitlab.com/golang-commonmark/puny" -) - -func runeIsSpace(r rune) bool { - return r == ' ' || r == '\t' -} - -func byteIsSpace(b byte) bool { - return b == ' ' || b == '\t' -} - -func isLetter(b byte) bool { - return b >= 'a' && b <= 'z' || b >= 'A' && b <= 'Z' -} - -func isUppercaseLetter(b byte) bool { - return b >= 'A' && b <= 'Z' -} - -func mdpunct(b byte) bool { - return strings.IndexByte("!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~", b) != -1 -} - -func isMdAsciiPunct(r rune) bool { - if r > 0x7e { - return false - } - return mdpunct(byte(r)) -} - -func recodeHostnameFor(proto string) bool { - switch proto { - case "http", "https", "mailto": - return true - } - return false -} - -func normalizeLink(url string) string { - parsed, err := mdurl.Parse(url) - if err != nil { - return "" - } - - if parsed.Host != "" && (parsed.Scheme == "" || recodeHostnameFor(parsed.Scheme)) { - parsed.Host = puny.ToASCII(parsed.Host) - } - - parsed.Scheme = parsed.RawScheme - - return mdurl.Encode(parsed.String()) -} - -func normalizeLinkText(url string) string { - parsed, err := mdurl.Parse(url) - if err != nil { - return "" - } - - if parsed.Host != "" && (parsed.Scheme == "" || recodeHostnameFor(parsed.Scheme)) { - parsed.Host = puny.ToUnicode(parsed.Host) - } - - parsed.Scheme = parsed.RawScheme - - return mdurl.Decode(parsed.String()) -} - -var badProtos = []string{"file", "javascript", "vbscript"} - -var rGoodData = regexp.MustCompile(`^data:image/(gif|png|jpeg|webp);`) - -func removeSpecial(s string) string { - i := 0 - for i < len(s) && !(s[i] <= 0x20 || s[i] == 0x7f) { - i++ - } - if i >= len(s) { - return s - } - buf := make([]byte, len(s)) - j := 0 - for i := 0; i < len(s); i++ { - if !(s[i] <= 0x20 || s[i] == 0x7f) { - buf[j] = s[i] - j++ - } - } - return string(buf[:j]) -} - -func validateLink(url string) bool { - str := strings.TrimSpace(url) - str = strings.ToLower(str) - - if strings.IndexByte(str, ':') >= 0 { - proto := strings.SplitN(str, ":", 2)[0] - proto = removeSpecial(proto) - for _, p := range badProtos { - if proto == p { - return false - } - } - if proto == "data" && !rGoodData.MatchString(str) { - return false - } - } - - return true -} - -func unescapeAll(s string) string { - anyChanges := false - i := 0 - for i < len(s)-1 { - b := s[i] - if b == '\\' { - if mdpunct(s[i+1]) { - anyChanges = true - break - } - } else if b == '&' { - if e, n := html.ParseEntity(s[i:]); n > 0 && e != html.BadEntity { - anyChanges = true - break - } - } - i++ - } - - if !anyChanges { - return s - } - - buf := make([]byte, len(s)) - copy(buf[:i], s) - j := i - for i < len(s) { - b := s[i] - if b == '\\' { - if i+1 < len(s) { - b = s[i+1] - if mdpunct(b) { - buf[j] = b - j++ - } else { - buf[j] = '\\' - j++ - buf[j] = b - j++ - } - i += 2 - continue - } - } else if b == '&' { - if e, n := html.ParseEntity(s[i:]); n > 0 && e != html.BadEntity { - if len(e) > n && len(buf) == len(s) { - newBuf := make([]byte, cap(buf)*2) - copy(newBuf[:j], buf) - buf = newBuf - } - j += copy(buf[j:], e) - i += n - continue - } - } - buf[j] = b - j++ - i++ - } - - return string(buf[:j]) -} - -func normalizeInlineCode(s string) string { - if s == "" { - return "" - } - - byteFuckery := false - i := 0 - for i < len(s)-1 { - b := s[i] - if b == '\n' { - byteFuckery = true - break - } - if b == ' ' { - i++ - b = s[i] - if b == ' ' || b == '\n' { - i-- - byteFuckery = true - break - } - } - i++ - } - - if !byteFuckery { - return strings.TrimSpace(s) - } - - buf := make([]byte, len(s)) - copy(buf[:i], s) - buf[i] = ' ' - i++ - j := i - lastSpace := true - for i < len(s) { - b := s[i] - switch b { - case ' ', '\n': - if lastSpace { - break - } - - buf[j] = ' ' - lastSpace = true - j++ - default: - buf[j] = b - lastSpace = false - j++ - } - - i++ - } - - return string(bytes.TrimSpace(buf[:j])) -} - -func normalizeReference(s string) string { - var buf bytes.Buffer - lastSpace := false - for _, r := range s { - if unicode.IsSpace(r) { - if !lastSpace { - buf.WriteByte(' ') - lastSpace = true - } - continue - } - - buf.WriteRune(unicode.ToLower(r)) - lastSpace = false - } - - return string(bytes.TrimSpace(buf.Bytes())) -} |