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* Convert markdown-it inline tokens (and plain markdown snippets) to RFCXML inline markup.
*/
const { escapeXml } = require('./xml-builder');
const { termToAnchor } = require('./term-anchor');
const { classifyCitation } = require('./bibliography');
const BCP14_RE = /\b(MUST NOT|SHALL NOT|SHOULD NOT|NOT RECOMMENDED|MUST|REQUIRED|SHALL|SHOULD|RECOMMENDED|MAY|OPTIONAL)\b/g;
function wrapBcp14(text) {
return escapeXml(text).replace(BCP14_RE, '<bcp14>$1</bcp14>');
}
function renderTemplateToken(token, ctx) {
const type = (token.info && token.info.type) || '';
const args = (token.info && token.info.args) || [];
if (type === 'ref') {
const term = args[0] || '';
const anchor = ctx.termAnchors.get(term.toLowerCase()) || termToAnchor(term);
return `<xref target="${anchor}">${escapeXml(term)}</xref>`;
}
if (type === 'iref') {
const term = args[0] || '';
const anchor = ctx.termAnchors.get(term.toLowerCase()) || termToAnchor(term);
return `<iref item="${escapeXml(term)}"/><xref target="${anchor}">${escapeXml(term)}</xref>`;
}
if (type === 'def') {
const term = args[0] || '';
const aliases = args.slice(1);
return escapeXml(aliases[0] || term);
}
if (type === 'tref') {
const term = args[1] || args[0] || '';
const aliases = args.slice(2);
const specKey = args[0];
const label = escapeXml(aliases[0] || term);
Eif (specKey && ctx.externalSpecAnchors && ctx.externalSpecAnchors.has(specKey)) {
return `${label} <xref target="${ctx.externalSpecAnchors.get(specKey)}"/>`;
}
return label;
}
if (type === 'xref') {
const specKey = args[0];
const term = args[1] || '';
const aliases = args.slice(2);
const label = escapeXml(aliases[0] || term);
Eif (specKey && ctx.externalSpecAnchors && ctx.externalSpecAnchors.has(specKey)) {
return `<xref target="${ctx.externalSpecAnchors.get(specKey)}">${label}</xref>`;
}
return label;
}
Eif (/^spec/i.test(type)) {
const name = args[0];
if (!name) {
return '';
}
const classified = classifyCitation(name);
const anchor = (ctx.citations && ctx.citations.has(classified.anchor))
? classified.anchor
: classified.anchor;
return `<xref target="${anchor}"/>`;
}
return escapeXml(token.content || '');
}
function renderInlineTokens(tokens, ctx) {
Iif (!tokens || tokens.length === 0) {
return '';
}
let out = '';
for (let i = 0; i < tokens.length; i++) {
const token = tokens[i];
switch (token.type) {
case 'text':
out += wrapBcp14(token.content);
break;
case 'softbreak':
case 'hardbreak':
out += '<br/>';
break;
case 'code_inline':
out += `<tt>${escapeXml(token.content)}</tt>`;
break;
case 'strong_open':
out += '<strong>';
break;
case 'strong_close':
out += '</strong>';
break;
case 'em_open':
out += '<em>';
break;
case 'em_close':
out += '</em>';
break;
case 's_open':
out += '<em>';
break;
case 's_close':
out += '</em>';
break;
case 'link_open': {
const href = token.attrGet ? token.attrGet('href') : (token.attrs || []).find(a => a[0] === 'href')?.[1];
out += `<eref target="${escapeXml(href || '')}">`;
break;
}
case 'link_close':
out += '</eref>';
break;
case 'template':
out += renderTemplateToken(token, ctx);
break;
case 'image': {
const src = token.attrGet ? token.attrGet('src') : '';
const alt = token.content || '';
ctx.warnings.push(`Images are not native RFCXML artwork; emitting an eref for ${src || alt}`);
out += `<eref target="${escapeXml(src || '')}">${escapeXml(alt || src)}</eref>`;
break;
}
case 'html_inline':
if (/^<br\s*\/?>$/i.test(token.content)) {
out += '<br/>';
}
break;
default:
if (token.children) {
out += renderInlineTokens(token.children, ctx);
} else if (token.content && token.type === 'text') {
out += wrapBcp14(token.content);
}
break;
}
}
return out;
}
function renderInlineToken(token, ctx) {
Iif (!token) {
return '';
}
Eif (token.type === 'inline') {
return renderInlineTokens(token.children || [], ctx);
}
return renderInlineTokens([token], ctx);
}
function renderMarkdownInline(md, text, ctx) {
if (!text || !String(text).trim()) {
return '';
}
const tokens = md.parse(String(text), {});
return tokens
.filter(token => token.type === 'inline')
.map(token => renderInlineToken(token, ctx))
.filter(Boolean)
.join(' ');
}
function renderParagraphsFromMarkdown(md, text, ctx) {
if (!text || !String(text).trim()) {
return [];
}
const tokens = md.parse(String(text), {});
const paragraphs = [];
for (const token of tokens) {
if (token.type === 'inline' && token.children && token.children.length) {
const inner = renderInlineToken(token, ctx);
Eif (inner.trim()) {
paragraphs.push(`<t>${inner}</t>`);
}
}
}
return paragraphs;
}
module.exports = {
BCP14_RE,
wrapBcp14,
renderTemplateToken,
renderInlineTokens,
renderInlineToken,
renderMarkdownInline,
renderParagraphsFromMarkdown
};
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