예제 #1
0
func matchTagName(s string) string {
	if len(s) < 2 {
		return ""
	}

	i := 0
	if s[0] == '/' {
		i++
	}
	start := i
	max := min(15+i, len(s))
	for i < max && byteutil.IsLetter(s[i]) {
		i++
	}
	if i >= len(s) {
		return ""
	}

	switch s[i] {
	case ' ', '\n', '/', '>':
		return byteutil.ToLower(s[start:i])
	default:
		return ""
	}
}
예제 #2
0
파일: parse.go 프로젝트: opennota/url
func findScheme(s string) (int, error) {
	if s == "" {
		return 0, nil
	}

	b := s[0]
	if b == ':' {
		return 0, ErrMissingScheme
	}
	if !byteutil.IsLetter(b) {
		return 0, nil
	}

	for i := 1; i < len(s); i++ {
		b := s[i]
		switch {
		case cs1[b]:
			// do nothing
		case b == ':':
			return i, nil
		default:
			return 0, nil
		}
	}

	return 0, nil
}
예제 #3
0
파일: linkify.go 프로젝트: roktas/markdown
func isLinkOpen(s string) bool {
	return byteutil.IsLetter(s[1])
}
예제 #4
0
func matchHTML(s string) string {
	end := 0
	i := 0

	for i+2 < len(s) && s[i] == '<' {
		i++
		st := 0
	loop:
		for i < len(s) {
			b := s[i]
			i++

			switch st {
			case 0: // initial state
				switch {
				case byteutil.IsLetter(b):
					st = 1
				case b == '/':
					st = 2
				case b == '!':
					st = 3
				case b == '?':
					st = 4
				default:
					return s[:end]
				}

			case 1: // opening tag <DIV
				switch {
				case cs1[b]:
					break
				case ws[b]:
					st = 5
				case b == '/':
					st = 6
				case b == '>':
					end = i
					break loop
				default:
					return s[:end]
				}

			case 2: // closing tag
				switch {
				case byteutil.IsLetter(b):
					st = 14
				default:
					return s[:end]
				}

			case 3: // comment or declaration
				switch {
				case b == '-':
					st = 17
				case byteutil.IsUppercaseLetter(b):
					st = 18
				case b == '[':
					st = 19
				default:
					return s[:end]
				}

			case 4: // processing instruction
				switch b {
				case '?':
					st = 16
				}

			case 5: // <DIV SPACE
				switch {
				case ws[b]:
					break
				case b == '/':
					st = 6
				case b == '>':
					end = i
					break loop
				case cs2[b]:
					st = 7
				default:
					return s[:end]
				}

			case 6: // <BR/
				switch b {
				case '>':
					end = i
					break loop
				default:
					return s[:end]
				}

			case 7: // <A H
				switch {
				case cs3[b]:
					break
				case b == '=':
					st = 9
				case ws[b]:
					st = 8
				case b == '/':
					st = 6
				case b == '>':
					end = i
					break loop
				default:
					return s[:end]
				}

			case 8: // <A HREF SPACE
				switch {
				case ws[b]:
					break
				case b == '=':
					st = 9
				case b == '>':
					end = i
					break loop
				case cs2[b]:
					st = 7
				default:
					return s[:end]
				}

			case 9: // <A HREF=
				switch {
				case ws[b]:
					break
				case b == '"':
					st = 10
				case b == '\'':
					st = 11
				case cs4[b]:
					return s[:end]
				default:
					st = 12
				}

			case 10: // <A HREF="
				switch b {
				case '"':
					st = 13
				}

			case 11: // <A HREF='
				switch b {
				case '\'':
					st = 13
				}

			case 12: // <A HREF=H
				switch {
				case ws[b]:
					st = 5
				case b == '/':
					st = 6
				case b == '>':
					end = i
					break loop
				case cs4[b]:
					return s[:end]
				default:
					st = 12
				}

			case 13: // <A HREF="http://google.com"
				switch {
				case ws[b]:
					st = 5
				case b == '/':
					st = 6
				case b == '>':
					end = i
					break loop
				default:
					return s[:end]
				}

			case 14: // </I
				switch {
				case cs1[b]:
					break
				case ws[b]:
					st = 15
				case b == '>':
					end = i
					break loop
				default:
					return s[:end]
				}

			case 15: // </IMG SPACE
				switch {
				case ws[b]:
					break
				case b == '>':
					end = i
					break loop
				default:
					return s[:end]
				}

			case 16: // <?...?
				switch b {
				case '>':
					end = i
					break loop
				case '?':
					break
				default:
					st = 4
				}

			case 17: // <!-
				switch b {
				case '-':
					st = 20
				default:
					return s[:end]
				}

			case 18: // <!D
				switch {
				case byteutil.IsUppercaseLetter(b):
					break
				case ws[b]:
					st = 23
				default:
					return s[:end]
				}

			case 19: // <![
				switch {
				case strings.HasPrefix(s[i-1:], "CDATA["):
					i += 5
					st = 24
				default:
					return s[:end]
				}

			case 20: // <!--
				switch b {
				case '-':
					st = 21
				case '>':
					return s[:end]
				}

			case 21: // <!-- -
				switch b {
				case '-':
					st = 22
				case '>':
					return s[:end]
				default:
					st = 20
				}

			case 22: // <!-- --
				switch b {
				case '>':
					end = i
					break loop
				default:
					return s[:end]
				}

			case 23: // <!DOCTYPE SPACE
				switch b {
				case '>':
					end = i
					break loop
				}

			case 24: // <![CDATA[
				switch b {
				case ']':
					st = 25
				}

			case 25: // <![CDATA[ ... ]
				switch b {
				case ']':
					st = 26
				default:
					st = 24
				}

			case 26: // <![CDATA[ ... ]]
				switch b {
				case '>':
					end = i
					break loop
				default:
					st = 24
				}
			}
		}
	}

	return s[:end]
}
예제 #5
0
func ruleHTMLBlock(s *StateBlock, startLine, endLine int, silent bool) (_ bool) {
	if !s.Md.HTML {
		return
	}

	shift := s.TShift[startLine]
	if shift < 0 {
		return
	}

	pos := s.BMarks[startLine] + shift
	max := s.EMarks[startLine]

	if pos+1 >= max {
		return
	}

	src := s.Src

	if src[pos] != '<' {
		return
	}

	pos++
	b := src[pos]
	if !htmlSecond[b] {
		return
	}

	nextLine := startLine + 1

	var endCond func(string) bool

	if pos+2 < max && byteutil.IsLetter(b) && rStartCond1.MatchString(src[pos:]) {
		endCond = func(s string) bool {
			return rEndCond1.MatchString(s)
		}
	} else if strings.HasPrefix(src[pos:], "!--") {
		endCond = func(s string) bool {
			return strings.Contains(s, "-->")
		}
	} else if b == '?' {
		endCond = func(s string) bool {
			return strings.Contains(s, "?>")
		}
	} else if b == '!' && pos+1 < max && byteutil.IsUppercaseLetter(src[pos+1]) {
		endCond = func(s string) bool {
			return strings.Contains(s, ">")
		}
	} else if strings.HasPrefix(src[pos:], "![CDATA[") {
		endCond = func(s string) bool {
			return strings.Contains(s, "]]>")
		}
	} else if pos+2 < max && (byteutil.IsLetter(b) || b == '/' && byteutil.IsLetter(src[pos+1])) {
		terminator := true
		if rStartCond6.MatchString(src[pos:max]) {
		} else if rStartCond7.MatchString(src[pos:max]) {
			terminator = false
		} else {
			return
		}
		if silent {
			return terminator
		}
		endCond = func(s string) bool {
			return s == ""
		}
	} else {
		return
	}

	if silent {
		return true
	}

	if !endCond(src[pos:max]) {
		for nextLine < endLine {
			shift := s.TShift[nextLine]
			if shift < s.BlkIndent {
				break
			}
			pos := s.BMarks[nextLine] + shift
			max := s.EMarks[nextLine]
			if pos > max {
				pos = max
			}
			if endCond(src[pos:max]) {
				if pos != max {
					nextLine++
				}
				break
			}
			nextLine++
		}
	}

	s.Line = nextLine
	s.PushToken(&HTMLBlock{
		Content: s.Lines(startLine, nextLine, s.BlkIndent, true),
		Map:     [2]int{startLine, nextLine},
	})

	return true
}