/usr/share/gocode/src/github.com/miekg/mmark/ial.go is in golang-github-miekg-mmark-dev 1.3.6+dfsg-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 | // IAL implements inline attributes.
package mmark
import (
"bytes"
"sort"
)
// One or more of these can be attached to block elements
type inlineAttr struct {
id string // #id
class map[string]bool // 0 or more .class
attr map[string]string // key=value pairs
}
func newInlineAttr() *inlineAttr {
return &inlineAttr{class: make(map[string]bool), attr: make(map[string]string)}
}
// Parsing and thus detecting an IAL.
// IAL can have #id, .class or key=value element seperated by spaces, that may be escaped
func (p *parser) isInlineAttr(data []byte) int {
esc := false
quote := false
ialB := 0
ial := newInlineAttr()
for i := 0; i < len(data); i++ {
switch data[i] {
case ' ':
if quote {
continue
}
chunk := data[ialB+1 : i]
if len(chunk) == 0 {
ialB = i
continue
}
switch {
case chunk[0] == '.':
ial.class[string(chunk[1:])] = true
case chunk[0] == '#':
ial.id = string(chunk[1:])
default:
k, v := parseKeyValue(chunk)
if k != "" {
ial.attr[k] = v
} else {
// this is illegal in an IAL, discard the posibility
return 0
}
}
ialB = i
case '"':
if esc {
esc = !esc
continue
}
quote = !quote
case '\\':
esc = !esc
case '}':
if esc {
esc = !esc
continue
}
chunk := data[ialB+1 : i]
if len(chunk) == 0 {
return i + 1
}
switch {
case chunk[0] == '.':
ial.class[string(chunk[1:])] = true
case chunk[0] == '#':
ial.id = string(chunk[1:])
default:
k, v := parseKeyValue(chunk)
if k != "" {
ial.attr[k] = v
} else {
// this is illegal in an IAL, discard the posibility
return 0
}
}
p.ial = p.ial.add(ial)
return i + 1
default:
esc = false
}
}
return 0
}
func parseKeyValue(chunk []byte) (string, string) {
chunks := bytes.SplitN(chunk, []byte{'='}, 2)
if len(chunks) != 2 {
return "", ""
}
chunks[1] = bytes.Replace(chunks[1], []byte{'"'}, nil, -1)
return string(chunks[0]), string(chunks[1])
}
// Add IAL to another, overwriting the #id, collapsing classes and attributes
func (i *inlineAttr) add(j *inlineAttr) *inlineAttr {
if i == nil {
return j
}
if j.id != "" {
i.id = j.id
}
for k, c := range j.class {
i.class[k] = c
}
for k, a := range j.attr {
i.attr[k] = a
}
return i
}
func (i *inlineAttr) SetAttr(key, value string) {
i.attr[key] = value
}
func (i *inlineAttr) SortClasses() []string {
keys := make([]string, 0, len(i.class))
for k := range i.class {
keys = append(keys, k)
}
sort.Strings(keys)
return keys
}
func (i *inlineAttr) SortAttributes() []string {
keys := make([]string, 0, len(i.attr))
for k := range i.attr {
keys = append(keys, k)
}
sort.Strings(keys)
return keys
}
// GetOrDefaultAttr sets the value under key if is is not set or
// use the value already in there. The boolean returns indicates
// if the value has been overwritten.
func (i *inlineAttr) GetOrDefaultAttr(key, def string) bool {
v := i.attr[key]
if v != "" {
return false
}
if def == "" {
return false
}
i.attr[key] = def
return true
}
// GetOrDefaulClass sets the class class. The boolean returns indicates
// if the value has been overwritten.
func (i *inlineAttr) GetOrDefaultClass(class string) bool {
_, ok := i.class[class]
i.class[class] = true
return ok
}
// GetOrDefaultID sets the id in i if it is not set. The boolean
// indicates if the id as set in i.
func (i *inlineAttr) GetOrDefaultId(id string) bool {
if i.id != "" {
return false
}
if id == "" {
return false
}
i.id = id
return true
}
// This returning a " " is not particularly nice...
// Key returns the value of a specific key as a ' key="value"' string. If not found
// an string containing a space is returned.
func (i *inlineAttr) Key(key string) string {
if v, ok := i.attr[key]; ok {
return " " + key + "=\"" + v + "\""
}
return " "
}
// Value returns the value of a specific key as value. If not found
// an empty string is returned. TODO(miek): should be " " or change Key() above.
func (i *inlineAttr) Value(key string) string {
if v, ok := i.attr[key]; ok {
return v
}
return ""
}
// DropAttr will drop the attribute under key from i.
// The returned boolean indicates if the key was found in i.
func (i *inlineAttr) DropAttr(key string) bool {
_, ok := i.attr[key]
delete(i.attr, key)
return ok
}
// KeepAttr will drop all attributes, except the ones listed under keys.
func (i *inlineAttr) KeepAttr(keys []string) {
newattr := make(map[string]string)
for _, k := range keys {
if v, ok := i.attr[k]; ok {
newattr[k] = v
}
}
i.attr = newattr
}
// KeepClass will drop all classes, except the ones listed under keys.
func (i *inlineAttr) KeepClass(keys []string) {
newclass := make(map[string]bool)
for _, k := range keys {
if v, ok := i.class[k]; ok {
newclass[k] = v
}
}
i.class = newclass
}
|