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2024-11-03 17:16:20 +01:00
commit fd6412d6f2
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node_modules/markdown-it/lib/helpers/index.mjs generated vendored Normal file
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// Just a shortcut for bulk export
import parseLinkLabel from './parse_link_label.mjs'
import parseLinkDestination from './parse_link_destination.mjs'
import parseLinkTitle from './parse_link_title.mjs'
export {
parseLinkLabel,
parseLinkDestination,
parseLinkTitle
}

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// Parse link destination
//
import { unescapeAll } from '../common/utils.mjs'
export default function parseLinkDestination (str, start, max) {
let code
let pos = start
const result = {
ok: false,
pos: 0,
str: ''
}
if (str.charCodeAt(pos) === 0x3C /* < */) {
pos++
while (pos < max) {
code = str.charCodeAt(pos)
if (code === 0x0A /* \n */) { return result }
if (code === 0x3C /* < */) { return result }
if (code === 0x3E /* > */) {
result.pos = pos + 1
result.str = unescapeAll(str.slice(start + 1, pos))
result.ok = true
return result
}
if (code === 0x5C /* \ */ && pos + 1 < max) {
pos += 2
continue
}
pos++
}
// no closing '>'
return result
}
// this should be ... } else { ... branch
let level = 0
while (pos < max) {
code = str.charCodeAt(pos)
if (code === 0x20) { break }
// ascii control characters
if (code < 0x20 || code === 0x7F) { break }
if (code === 0x5C /* \ */ && pos + 1 < max) {
if (str.charCodeAt(pos + 1) === 0x20) { break }
pos += 2
continue
}
if (code === 0x28 /* ( */) {
level++
if (level > 32) { return result }
}
if (code === 0x29 /* ) */) {
if (level === 0) { break }
level--
}
pos++
}
if (start === pos) { return result }
if (level !== 0) { return result }
result.str = unescapeAll(str.slice(start, pos))
result.pos = pos
result.ok = true
return result
}

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// Parse link label
//
// this function assumes that first character ("[") already matches;
// returns the end of the label
//
export default function parseLinkLabel (state, start, disableNested) {
let level, found, marker, prevPos
const max = state.posMax
const oldPos = state.pos
state.pos = start + 1
level = 1
while (state.pos < max) {
marker = state.src.charCodeAt(state.pos)
if (marker === 0x5D /* ] */) {
level--
if (level === 0) {
found = true
break
}
}
prevPos = state.pos
state.md.inline.skipToken(state)
if (marker === 0x5B /* [ */) {
if (prevPos === state.pos - 1) {
// increase level if we find text `[`, which is not a part of any token
level++
} else if (disableNested) {
state.pos = oldPos
return -1
}
}
}
let labelEnd = -1
if (found) {
labelEnd = state.pos
}
// restore old state
state.pos = oldPos
return labelEnd
}

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// Parse link title
//
import { unescapeAll } from '../common/utils.mjs'
// Parse link title within `str` in [start, max] range,
// or continue previous parsing if `prev_state` is defined (equal to result of last execution).
//
export default function parseLinkTitle (str, start, max, prev_state) {
let code
let pos = start
const state = {
// if `true`, this is a valid link title
ok: false,
// if `true`, this link can be continued on the next line
can_continue: false,
// if `ok`, it's the position of the first character after the closing marker
pos: 0,
// if `ok`, it's the unescaped title
str: '',
// expected closing marker character code
marker: 0
}
if (prev_state) {
// this is a continuation of a previous parseLinkTitle call on the next line,
// used in reference links only
state.str = prev_state.str
state.marker = prev_state.marker
} else {
if (pos >= max) { return state }
let marker = str.charCodeAt(pos)
if (marker !== 0x22 /* " */ && marker !== 0x27 /* ' */ && marker !== 0x28 /* ( */) { return state }
start++
pos++
// if opening marker is "(", switch it to closing marker ")"
if (marker === 0x28) { marker = 0x29 }
state.marker = marker
}
while (pos < max) {
code = str.charCodeAt(pos)
if (code === state.marker) {
state.pos = pos + 1
state.str += unescapeAll(str.slice(start, pos))
state.ok = true
return state
} else if (code === 0x28 /* ( */ && state.marker === 0x29 /* ) */) {
return state
} else if (code === 0x5C /* \ */ && pos + 1 < max) {
pos++
}
pos++
}
// no closing marker found, but this link title may continue on the next line (for references)
state.can_continue = true
state.str += unescapeAll(str.slice(start, pos))
return state
}