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'use strict';
// This file is a modified version of Nixinova/Wikity, whose license is given below:
// Original: https://www.npmjs.com/package/wikity
//
// ISC License
//
// Copyright © 2021 Nixinova
//
// Permission to use, copy, modify, and/or distribute this software for any purpose with or
// without fee is hereby granted, provided that the above copyright notice and this
// permission notice appear in all copies.
//
// The software is provided "as is" and the author disclaims all warranties with regard to
// this software including all implied warranties of merchantability and fitness. In no
// event shall the author be liable for any special, direct, indirect, or consequential
// damages or any damages whatsoever resulting from loss of use, data or profits, whether
// in an action of contract, negligence or other tortious action, arising out of or in
// connection with the use or performance of this software.
import dateFormat from 'dateformat';
import htmlEscape from 'escape-html';
import * as fs from 'fs';
const re = (regex, flag = 'mgi') => {
return RegExp(regex.replace(/ /g, '').replace(/\|\|.+?\|\|/g, ''), flag);
};
const r = String.raw;
const arg = r`\s*([^|}]+?)\s*`;
export function parse(data) {
const vars = {};
const metadata = {};
let nowikis = [];
let nowikiCount = 0;
let rawExtLinkCount = 0;
let refCount = 0;
let refs = [];
let outText = data;
for (let l = 0, last = ''; l < parseInt(process.env.PARSER_MAX_RECURSION, 10); l++) {
if (last === outText) break; last = outText;
outText = outText
// Nowiki: <nowiki></nowiki>
.replace(re(r`<nowiki> ([^]+?) </nowiki>`), (_, m) => `%NOWIKI#${nowikis.push(m), nowikiCount++}%`)
// Sanitise unacceptable HTML
.replace(re(r`<(/?) \s* (?= script|link|meta|iframe|frameset|object|embed|applet|form|input|button|textarea )`), '<$1')
.replace(re(r`(?<= <[^>]+ ) (\bon(\w+))`), 'data-$2')
// Comments: <!-- -->
.replace(/<!--[^]+?-->/g, '')
// Lines: ----
.replace(/^-{4,}/gm, '<hr>')
// Metadata: displayTitle, __NOTOC__, etc
.replace(re(r`{{ \s* displayTitle: ([^}]+) }}`), (_, title) => (metadata.displayTitle = title, ''))
.replace(re(r`{{ \s* navbarSortOrder: ([^}]+) }}`), (_, order) => (metadata.sortOrder = parseInt(order, 10), ''))
.replace(re(r`__NOINDEX__`), () => (metadata.noindex = true, ''))
.replace(re(r`__NOTOC__`), () => (metadata.notoc = true, ''))
.replace(re(r`__FORCETOC__`), () => (metadata.toc = true, ''))
.replace(re(r`__TOC__`), () => (metadata.toc = true, '<toc></toc>'))
.replace(re(r`__PRIMARY__`), () => (metadata.primary = true, ''))
.replace(re(r`__NOTITLE__`), () => (metadata.notitle = true, ''))
// Magic words: {{!}}, {{reflist}}, etc
.replace(re(r`{{ \s* ! \s* }}`), '|')
.replace(re(r`{{ \s* = \s* }}`), '=')
.replace(re(r`{{ \s* [Rr]eflist \s* }}`), '<references/>')
// String functions: {{lc:}}, {{ucfirst:}}, {{len:}}, etc
.replace(re(r`{{ \s* #? urlencode: ${arg} }}`), (_, m) => encodeURI(m))
.replace(re(r`{{ \s* #? urldecode: ${arg} }}`), (_, m) => decodeURI(m))
.replace(re(r`{{ \s* #? lc: ${arg} }}`), (_, m) => m.toLowerCase())
.replace(re(r`{{ \s* #? uc: ${arg} }}`), (_, m) => m.toUpperCase())
.replace(re(r`{{ \s* #? lcfirst: ${arg} }}`), (_, m) => m[0].toLowerCase() + m.substr(1))
.replace(re(r`{{ \s* #? ucfirst: ${arg} }}`), (_, m) => m[0].toUpperCase() + m.substr(1))
.replace(re(r`{{ \s* #? len: ${arg} }}`), (_, m) => m.length)
.replace(re(r`{{ \s* #? pos: ${arg} \|${arg} (?: \s*\|${arg} )? }}`), (_, find, str, n = 0) => find.substr(n).indexOf(str))
.replace(re(r`{{ \s* #? sub: ${arg} \|${arg} (?:\|${arg})? }}`), (_, str, from, len) => str.substr(+from - 1, +len))
.replace(re(r`{{ \s* #? padleft: ${arg} \|${arg} \|${arg} }}`), (_, str, n, char) => str.padStart(+n, char))
.replace(re(r`{{ \s* #? padright: ${arg} \|${arg} \|${arg} }}`), (_, str, n, char) => str.padEnd(+n, char))
.replace(re(r`{{ \s* #? replace: ${arg} \|${arg} \|${arg} }}`), (_, str, find, rep) => str.split(find).join(rep))
.replace(re(r`{{ \s* #? explode: ${arg} \|${arg} \|${arg} }}`), (_, str, delim, pos) => str.split(delim)[+pos])
// Parser functions: {{#if:}}, {{#switch:}}, etc
.replace(re(r`{{ \s* (#\w+) \s* : \s* ( [^{}]+ ) \s* }} ( ?!} )`), (_, name, content) => {
if (/{{\s*#/.test(content)) return _;
const args = content.trim().split(/\s*\|\s*/);
switch (name) {
case '#if':
return (args[0] ? args[1] : args[2]) || '';
case '#ifeq':
return (args[0] === args[1] ? args[2] : args[3]) || '';
case '#vardefine':
vars[args[0]] = args[1] || '';
return '';
case '#var':
if (re(r`{{ \s* #vardefine \s* : \s* ${args[0]}`).test(outText)) return _; // wait until var is set
return vars[args[0]] || args[1] || '';
case '#switch':
return args.slice(1)
.map(arg => arg.split(/\s*=\s*/))
.filter(duo => args[0] === duo[0].replace('#default', args[0]))[0][1];
case '#time':
case '#date':
case '#datetime':
return dateFormat(args[1] ? new Date(args[1]) : new Date(), args[0]);
}
})
// Templates: {{template}}
.replace(re(r`{{ \s* ([^#}|]+?) (\|[^}]+)? }} (?!})`), (_, title, params = '') => {
if (/{{/.test(params)) return _;
const page = 'Template:' + title.trim().replace(/ /g, '_');
// Retrieve template content
let content = '';
try {
content = fs.readFileSync(page + '.wiki', 'utf8' );
}
catch {
return `<a class="internal-link redlink" title="${title}" href="${page}">${title}</a>`;
}
// Remove non-template sections
content = content
.replace(/<noinclude>.*?<\/noinclude>/gs, '')
.replace(/.*<(includeonly|onlyinclude)>|<\/(includeonly|onlyinclude)>.*/gs, '');
// Substitite arguments
const argMatch = (arg) => re(r`{{{ \s* ${arg} (?:\|([^}]*))? \s* }}}`);
let args = params.split('|').slice(1);
for (let i in args) {
let parts = args[i].split('=');
let [arg, val] = parts[1] ? [parts[0], ...parts.slice(1)] : [(+i + 1) + '', parts[0]];
content = content.replace(argMatch(arg), (_, m) => val || m || '');
}
for (let i = 1; i <= 10; i++) {
content = content.replace(argMatch(arg), '$2');
}
return content;
})
// Images: [[File:Image.png|options|caption]]
.replace(re(r`\[\[ (?:File|Image): (.+?) (\|.+?)? \]\]`), (_, file, params) => {
if (/{{/.test(params)) return _;
const path = 'File:' + file.trim().replace(/ /g, '_');
let caption = '';
let imageData = {};
let imageArgs = params.split('|').map((arg) => arg.replace(/"/g, '"'));
for (const param of imageArgs) {
if (['left', 'right', 'center', 'none'].includes(param)) {
imageData.float = param;
}
if (['baseline', 'sub', 'super', 'top', 'text-bottom', 'middle', 'bottom', 'text-bottom'].includes(param)) {
imageData.align = param;
}
else if (['border', 'frameless', 'frame', 'framed', 'thumb', 'thumbnail'].includes(param)) {
imageData.type = { framed: 'frame', thumbnail: 'thumb' }[param] || param;
if (imageData.type === 'thumb') imageData.hasCaption = true;
}
else if (param.endsWith('px')) {
param.replace(/(?:(\w+)?(x))?(\w+)px/, (_, size1, auto, size2) => {
if (size1) Object.assign(imageData, { width: size1, height: size2 });
else if (auto) Object.assign(imageData, { width: 'auto', height: size2 });
else Object.assign(imageData, { width: size2, height: 'auto' });
return '';
});
}
else if (param.startsWith('upright=')) {
imageData.width = +param.replace('upright=', '') * 300;
}
else if (param.startsWith('link=')) {
imageData.link = param.replace('link=', '');
}
else if (param.startsWith('alt=')) {
imageData.alt = param.replace('alt=', '');
}
else if (param.startsWith('style=')) {
imageData.style = param.replace('style=', '');
}
else if (param.startsWith('class=')) {
imageData.class = param.replace('class=', '');
}
else {
caption = param;
}
}
let content = `
<figure
class="${imageData.class || ''} image-container image-${imageData.type || 'default'}"
style="float:${imageData.float || 'none'};vertical-align:${imageData.align || 'unset'};${imageData.style || ''}"
>
<img
src="${path}"
alt="${imageData.alt || file}"
width="${imageData.width || 300}"
height="${imageData.height || 300}"
>
${imageData.hasCaption ? `<figcaption>${caption}</figcaption>` : ''}
</figure>
`;
if (imageData.link) content = `<a href="/${imageData.link}" title="${imageData.link}">${content}</a>`;
return content;
})
// Markup: '''bold''' and '''italic'''
.replace(re(r`''' ([^']+?) '''`), '<b>$1</b>')
.replace(re(r`'' ([^']+?) ''`), '<i>$1</i>')
// Headings: ==heading==
.replace(re(r`^ (=+) \s* (.+?) \s* \1 \s* $`), (_, lvl, txt) => `<h${lvl.length} id="${encodeURI(txt.replace(/ /g, '_'))}">${txt}</h${lvl.length}>`)
// Internal links: [[Page]] and [[Page|Text]]
.replace(re(r`\[\[ ([^\]|]+?) \]\]`), '<a class="internal-link" title="$1" href="$1">$1</a>')
.replace(re(r`\[\[ ([^\]|]+?) \| ([^\]]+?) \]\]`), '<a class="internal-link" title="$1" href="/$1">$2</a>')
.replace(re(r`(</a>)([a-z]+)`), '$2$1')
// External links: [href Page] and just [href]
.replace(re(r`\[ ((?:\w+:)?\/\/ [^\s\]]+) (\s [^\]]+?)? \]`), (_, href, txt) => `<a class="external-link" href="${href}">${txt || '[' + (++rawExtLinkCount) + ']'}</a>`)
// Bulleted list: *item
.replace(re(r`^ (\*+) (.+?) $`), (_, lvl, txt) => `${'<ul>'.repeat(lvl.length)}<li>${txt}</li>${'</ul>'.repeat(lvl.length)}`)
.replace(re(r`</ul> (\s*?) <ul>`), '$1')
// Numbered list: #item
.replace(re(r`^ (#+) (.+?) $`), (_, lvl, txt) => `${'<ol>'.repeat(lvl.length)}<li>${txt}</li>${'</ol>'.repeat(lvl.length)}`)
.replace(re(r`</ol> (\s*?) <ol>`), '$1')
// Definition list: ;head, :item
.replace(re(r`^ ; (.+) $`), '<dl><dt>$1</dt></dl>')
.replace(re(r`^ (:+) (.+?) $`), (_, lvl, txt) => `${'<dl>'.repeat(lvl.length)}<dd>${txt}</dd>${'</dl>'.repeat(lvl.length)}`)
.replace(re(r`</dl> (\s*?) <dl>`), '$1')
// Tables: {|, |+, !, |-, |, |}
.replace(re(r`^ \{\| (.*?) $`), (_, attrs) => `<table ${attrs}><tr>`)
.replace(re(r`^ ! ([^]+?) (?= \n^[!|] )`), (_, content) => `<th>${content}</th>`)
.replace(re(r`^ \|\+ (.*?) $`), (_, content) => `<caption>${content}</caption>`)
.replace(re(r`^ \|[^-+}] ([^]*?) (?= \n^[!|] )`), (_, content) => `<td>${content}</td>`)
.replace(re(r`^ \|- (.*?) $`), (_, attrs) => `</tr><tr ${attrs}>`)
.replace(re(r`^ \|\}`), '</tr></table>')
// References: <ref></ref>, <references/>
.replace(re(r`<ref> (.+?) </ref>`), (_, text) => {
refs.push(text);
refCount++;
return `<sup><a id="cite-${refCount}" class="ref" href="#ref-${refCount}">[${refCount}]</a></sup>`;
})
.replace(re(r`<references \s* /?>`), '<ol>' + refs.map((ref, i) =>
`<li id="ref-${+i + 1}"> <a href="#cite-${+i + 1}">↑</a> ${ref} </li>`).join('\n') + '</ol>'
)
// Nonstandard: ``code`` and ```code blocks```
.replace(re(r` \`\`\` ([^\`]+?) \`\`\` `), '<pre class="code-block">$1</pre>')
.replace(re(r` <pre> ([^\`]+?) </pre> `), '<pre class="code-block">$1</pre>')
// Spacing
.replace(/(\r?\n){2}/g, '\n</p><p>\n')
// Restore nowiki contents
.replace(/%NOWIKI#(\d+)%/g, (_, n) => htmlEscape(nowikis[n]));
}
metadata.buildTime = new Date();
let result = {};
result.html = outText;
result.metadata = metadata;
return result;
}
|
