109 lines
3.6 KiB
JavaScript
109 lines
3.6 KiB
JavaScript
/* eslint-disable @gitlab/require-i18n-strings */
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import { defaults, repeat } from 'lodash';
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const DEFAULTS = {
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subListIndentSpaces: 4,
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unorderedListBulletChar: '-',
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incrementListMarker: false,
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strong: '*',
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emphasis: '_',
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};
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const countIndentSpaces = (text) => {
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const matches = text.match(/^\s+/m);
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return matches ? matches[0].length : 0;
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};
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const buildHTMLToMarkdownRender = (baseRenderer, formattingPreferences = {}) => {
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const {
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subListIndentSpaces,
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unorderedListBulletChar,
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incrementListMarker,
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strong,
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emphasis,
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} = defaults(formattingPreferences, DEFAULTS);
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const sublistNode = 'LI OL, LI UL';
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const unorderedListItemNode = 'UL LI';
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const orderedListItemNode = 'OL LI';
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const emphasisNode = 'EM, I';
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const strongNode = 'STRONG, B';
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const headingNode = 'H1, H2, H3, H4, H5, H6';
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const preCodeNode = 'PRE CODE';
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return {
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TEXT_NODE(node) {
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return baseRenderer.getSpaceControlled(
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baseRenderer.trim(baseRenderer.getSpaceCollapsedText(node.nodeValue)),
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node,
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);
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},
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/*
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* This converter overwrites the default indented list converter
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* to allow us to parameterize the number of indent spaces for
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* sublists.
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*
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* See the original implementation in
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* https://github.com/nhn/tui.editor/blob/master/libs/to-mark/src/renderer.basic.js#L161
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*/
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[sublistNode](node, subContent) {
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const baseResult = baseRenderer.convert(node, subContent);
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// Default to 1 to prevent possible divide by 0
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const firstLevelIndentSpacesCount = countIndentSpaces(baseResult) || 1;
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const reindentedList = baseResult
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.split('\n')
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.map((line) => {
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const itemIndentSpacesCount = countIndentSpaces(line);
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const nestingLevel = Math.ceil(itemIndentSpacesCount / firstLevelIndentSpacesCount);
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const indentSpaces = repeat(' ', subListIndentSpaces * nestingLevel);
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return line.replace(/^ +/, indentSpaces);
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})
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.join('\n');
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return reindentedList;
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},
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[unorderedListItemNode](node, subContent) {
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const baseResult = baseRenderer.convert(node, subContent);
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const formatted = baseResult.replace(/^(\s*)([*|-])/, `$1${unorderedListBulletChar}`);
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const { attributeDefinition } = node.dataset;
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return attributeDefinition ? `${formatted.trimRight()}\n${attributeDefinition}\n` : formatted;
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},
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[orderedListItemNode](node, subContent) {
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const baseResult = baseRenderer.convert(node, subContent);
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return incrementListMarker ? baseResult : baseResult.replace(/^(\s*)\d+?\./, '$11.');
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},
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[emphasisNode](node, subContent) {
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const result = baseRenderer.convert(node, subContent);
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return result.replace(/(^[*_]{1}|[*_]{1}$)/g, emphasis);
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},
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[strongNode](node, subContent) {
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const result = baseRenderer.convert(node, subContent);
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const strongSyntax = repeat(strong, 2);
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return result.replace(/^[*_]{2}/, strongSyntax).replace(/[*_]{2}$/, strongSyntax);
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},
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[headingNode](node, subContent) {
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const result = baseRenderer.convert(node, subContent);
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const { attributeDefinition } = node.dataset;
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return attributeDefinition ? `${result.trimRight()}\n${attributeDefinition}\n\n` : result;
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},
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[preCodeNode](node, subContent) {
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const isReferenceDefinition = Boolean(node.dataset.sseReferenceDefinition);
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return isReferenceDefinition
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? `\n\n${node.innerText}\n\n`
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: baseRenderer.convert(node, subContent);
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},
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IMG(node) {
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const { originalSrc } = node.dataset;
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return ``;
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},
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};
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};
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export default buildHTMLToMarkdownRender;
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