1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
|
package utils
import (
"fmt"
"regexp"
"strings"
)
// LineIndex returns line index of search in content.
func LineIndex(content string, search string) int {
ret := -1
line := ""
for _, c := range content {
if c == '\n' {
line += ""
ret++
} else {
line += string(c)
}
if strings.Index(line, search) > -1 {
ret++
break
}
}
return ret
}
// PowerLess select titles of Power<P
func PowerLess(P int, f func(*MdTitleTree)) func(*MdTitleTree) {
return func(n *MdTitleTree) {
if n.Power < P && n.Title != "" {
f(n)
}
}
}
// LineLess select titles of Line<P
func LineLess(P int, f func(*MdTitleTree)) func(*MdTitleTree) {
return func(n *MdTitleTree) {
if n.Line < P && n.Title != "" {
f(n)
}
}
}
var mdTitle = regexp.MustCompile(`^([#]{1,6})\s*(.+)`)
func cntStr(in []string, what string) int {
c := -1
for _, i := range in {
if i == what {
c++
}
}
if c > -1 {
c++ // starts at 1
}
return c
}
// GetAllMdTitles extracts all MD titles markup.
func GetAllMdTitles(content string) []MdTitle {
ret := []MdTitle{}
allTitles := []string{}
line := ""
isInBlock := false
isInTitle := false
i := 0
for _, c := range content {
if !isInBlock && c == '\n' {
if isInTitle {
if mdTitle.MatchString(line) {
got := mdTitle.FindAllStringSubmatch(line, -1)
if len(got) > 0 {
t := got[0][2]
ret = append(ret, MdTitle{
Line: i, Title: t,
Power: len(got[0][1]),
Duplicate: cntStr(allTitles, t),
})
allTitles = append(allTitles, t)
}
}
}
i++
isInTitle = false
line = ""
} else if c == '`' {
isInBlock = !isInBlock
line += string(c)
} else if c == '#' && !isInBlock {
isInTitle = true
line += string(c)
} else {
if c == '\n' {
i++
}
line += string(c)
}
}
return ret
}
// MakeTitleTree transform a raw list of titles into a tree.
func MakeTitleTree(titles []MdTitle) *MdTitleTree {
root := &MdTitleTree{}
cur := root
for _, t := range titles {
if t.Power == 1 {
nnew := &MdTitleTree{MdTitle: t, Parent: root}
root.Items = append(root.Items, nnew)
cur = nnew
} else if t.Power > cur.Power {
nnew := &MdTitleTree{MdTitle: t, Parent: cur}
cur.Items = append(cur.Items, nnew)
cur = nnew
} else if t.Power == cur.Power {
nnew := &MdTitleTree{MdTitle: t, Parent: cur.Parent}
cur.Parent.Items = append(cur.Parent.Items, nnew)
cur = nnew
} else if t.Power < cur.Power {
for {
if cur.Parent.Power <= t.Power {
break
}
cur = cur.Parent
}
cur = cur.Parent
nnew := &MdTitleTree{MdTitle: t, Parent: cur.Parent}
cur.Parent.Items = append(cur.Parent.Items, nnew)
cur = nnew
}
}
return root
}
// GetMdLinkHash encodes s to insert into an MD link.
func GetMdLinkHash(link string) string {
link = strings.ToLower(link)
link = strings.Replace(link, "/", "", -1)
link = strings.Replace(link, "$", "", -1)
link = strings.Replace(link, ">", "", -1)
link = strings.Replace(link, ".", "", -1)
link = strings.Replace(link, ";", "", -1)
link = strings.Replace(link, ":", "", -1)
link = strings.Replace(link, "!", "", -1)
link = strings.Replace(link, "'", "", -1)
link = strings.Replace(link, "|", "", -1)
link = strings.Replace(link, "[", "", -1)
link = strings.Replace(link, "]", "", -1)
link = strings.Replace(link, ",", "", -1)
link = strings.Replace(link, " ", "-", -1)
// should it be a regexp like /[a-z0-9-_]/i ?
return link
}
// MdTitleTree is an MdTitle with tree capabilities
type MdTitleTree struct {
MdTitle
Parent *MdTitleTree
Items []*MdTitleTree
}
// Traverse a tree
func (m *MdTitleTree) Traverse(f func(*MdTitleTree)) {
f(m)
for _, i := range m.Items {
i.Traverse(f)
}
}
func (m *MdTitleTree) String() string {
x := strings.Repeat("#", m.Power)
return fmt.Sprintf("%-5v %-15q Items:%v Line:%v", x, m.Title, len(m.Items), m.Line)
}
// MdTitle is a markdwon title.
type MdTitle struct {
Line int
Power int
Duplicate int
Title string
}
|
