108 lines
3.5 KiB
JavaScript
108 lines
3.5 KiB
JavaScript
const {parseAttrs, attrConcat} = require('./utils.js');
|
|
const {inlineAttrsApplyRules} = require('./rules.js');
|
|
|
|
/**
|
|
* @param {MarkdownIt} md
|
|
* @param {{deliminator: string, re: RegExp}} opts
|
|
*/
|
|
function pluginAttr(md, opts={}) {
|
|
const deliminator = opts.deliminator || '{';
|
|
const deliminatorLength = deliminator.length;
|
|
/* eslint-disable-next-line max-len */
|
|
const reDefault = /\#(?<id>[^\s#.="'}]+)|\.(?<class>[^\s#.="'}]+)|(?<attr>[^\s#.="'}]+)(?:\=(?<val>[^\s}"'][^\s}]*|(?<q>["']).*?\k<q>))?|(?<term>})/g;
|
|
const reRaw = opts.re;
|
|
const re = reRaw ?
|
|
(reRaw.sticky || reRaw.global) ? reRaw :
|
|
new RegExp(reRaw, reRaw.flags+'g') :
|
|
reDefault;
|
|
|
|
md.block.ruler.before('table', 'block_attrs', (state, l0, l1, silent) => {
|
|
const {src, bMarks, eMarks, tShift} = state;
|
|
// guard thisLine.sCount == nextLine.sCount
|
|
if (state.sCount[l0] !== state.sCount[l0+1]) return false;
|
|
// disallow contiguous two { }
|
|
if (
|
|
l1 > l0+2 &&
|
|
state.sCount[l0+1] === state.sCount[l0+2] &&
|
|
src.startsWith(deliminator, bMarks[l0+1]+tShift[l0+1])
|
|
) return false;
|
|
// parse
|
|
const indexStart = bMarks[l0]+tShift[l0];
|
|
const indexEnd = eMarks[l0];
|
|
if (src.startsWith(deliminator, indexStart)) {
|
|
// parse attrs
|
|
re.lastIndex = indexStart+deliminatorLength;
|
|
const {attrs, index} = parseAttrs(src, re) || {};
|
|
// should meet end of line
|
|
if (!(attrs && index === indexEnd)) return false;
|
|
// push
|
|
// [block] silent: no need to update state
|
|
if (silent) return true;
|
|
state.line = l0+1;
|
|
const token = state.push('block_attr', '', 0);
|
|
token.attrs = attrs;
|
|
token.hidden = true;
|
|
return true;
|
|
}
|
|
return false;
|
|
}, {alt: ['paragraph']});
|
|
|
|
md.inline.ruler.push('inline_attrs', (state, silent) => {
|
|
const {src, pos} = state;
|
|
if (src.startsWith(deliminator, pos)) {
|
|
re.lastIndex = pos+deliminatorLength;
|
|
const {attrs, index} = parseAttrs(src, re) || {};
|
|
if (!attrs) return false;
|
|
// set attr
|
|
/*
|
|
[inline] silent:
|
|
false -> push token and update state
|
|
true -> set state.pos only
|
|
*/
|
|
if (!silent) {
|
|
const token = state.push('inline_attr', '', 0);
|
|
token.attrs = attrs;
|
|
token.content = src.substring(pos, index);
|
|
token.hidden = true;
|
|
}
|
|
state.pos = index;
|
|
return true;
|
|
}
|
|
return false;
|
|
});
|
|
|
|
md.core.ruler.after('block', 'apply_block_attrs', state => {
|
|
state.tokens.forEach((token, i, tokens) => {
|
|
if (token.type === 'block_attr' && token.attrs) {
|
|
const tokenN = tokens[i+1];
|
|
if (tokenN) {
|
|
attrConcat(tokenN, token);
|
|
tokens.splice(i, 1);
|
|
}
|
|
}
|
|
});
|
|
});
|
|
|
|
md.core.ruler.after('inline', 'apply_inline_attrs', state => {
|
|
state.tokens.forEach((blockToken, iBlock, blockTokens) => {
|
|
const {children} = blockToken;
|
|
if (!children) return;
|
|
children.forEach((token, i, tokens) => {
|
|
if (token.type !== 'inline_attr') return;
|
|
const matched = inlineAttrsApplyRules.some(({handler, disabled}) =>
|
|
disabled ? false : handler(token, i, tokens, iBlock, blockTokens));
|
|
// not seen as attrs
|
|
if (!matched) {
|
|
token.type = 'text';
|
|
token.hidden = false;
|
|
}
|
|
});
|
|
// remove inline_attr here to prevent index changed
|
|
blockToken.children = children.filter(t => t.type !== 'inline_attr');
|
|
});
|
|
});
|
|
}
|
|
|
|
module.exports = Object.assign(pluginAttr, {
|
|
inlineAttrsApplyRules,
|
|
});
|