133 lines
4.9 KiB
JavaScript
133 lines
4.9 KiB
JavaScript
/*! markdown-it-container 4.0.0 https://github.com/markdown-it/markdown-it-container @license MIT */
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(function(global, factory) {
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typeof exports === "object" && typeof module !== "undefined" ? module.exports = factory() : typeof define === "function" && define.amd ? define(factory) : (global = typeof globalThis !== "undefined" ? globalThis : global || self,
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global.markdownitContainer = factory());
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})(this, (function() {
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"use strict";
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// Process block-level custom containers
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function container_plugin(md, name, options) {
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// Second param may be useful if you decide
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// to increase minimal allowed marker length
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function validateDefault(params /*, markup */) {
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return params.trim().split(" ", 2)[0] === name;
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}
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function renderDefault(tokens, idx, _options, env, slf) {
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// add a class to the opening tag
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if (tokens[idx].nesting === 1) {
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tokens[idx].attrJoin("class", name);
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}
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return slf.renderToken(tokens, idx, _options, env, slf);
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}
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options = options || {};
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const min_markers = 3;
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const marker_str = options.marker || ":";
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const marker_char = marker_str.charCodeAt(0);
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const marker_len = marker_str.length;
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const validate = options.validate || validateDefault;
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const render = options.render || renderDefault;
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function container(state, startLine, endLine, silent) {
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let pos;
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let auto_closed = false;
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let start = state.bMarks[startLine] + state.tShift[startLine];
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let max = state.eMarks[startLine];
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// Check out the first character quickly,
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// this should filter out most of non-containers
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if (marker_char !== state.src.charCodeAt(start)) {
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return false;
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}
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// Check out the rest of the marker string
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for (pos = start + 1; pos <= max; pos++) {
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if (marker_str[(pos - start) % marker_len] !== state.src[pos]) {
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break;
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}
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}
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const marker_count = Math.floor((pos - start) / marker_len);
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if (marker_count < min_markers) {
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return false;
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}
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pos -= (pos - start) % marker_len;
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const markup = state.src.slice(start, pos);
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const params = state.src.slice(pos, max);
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if (!validate(params, markup)) {
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return false;
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}
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// Since start is found, we can report success here in validation mode
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if (silent) {
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return true;
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}
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// Search for the end of the block
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let nextLine = startLine;
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for (;;) {
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nextLine++;
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if (nextLine >= endLine) {
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// unclosed block should be autoclosed by end of document.
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// also block seems to be autoclosed by end of parent
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break;
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}
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start = state.bMarks[nextLine] + state.tShift[nextLine];
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max = state.eMarks[nextLine];
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if (start < max && state.sCount[nextLine] < state.blkIndent) {
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// non-empty line with negative indent should stop the list:
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// - ```
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// test
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break;
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}
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if (marker_char !== state.src.charCodeAt(start)) {
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continue;
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}
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if (state.sCount[nextLine] - state.blkIndent >= 4) {
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// closing fence should be indented less than 4 spaces
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continue;
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}
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for (pos = start + 1; pos <= max; pos++) {
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if (marker_str[(pos - start) % marker_len] !== state.src[pos]) {
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break;
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}
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}
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// closing code fence must be at least as long as the opening one
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if (Math.floor((pos - start) / marker_len) < marker_count) {
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continue;
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}
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// make sure tail has spaces only
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pos -= (pos - start) % marker_len;
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pos = state.skipSpaces(pos);
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if (pos < max) {
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continue;
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}
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// found!
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auto_closed = true;
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break;
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}
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const old_parent = state.parentType;
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const old_line_max = state.lineMax;
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state.parentType = "container";
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// this will prevent lazy continuations from ever going past our end marker
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state.lineMax = nextLine;
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const token_o = state.push("container_" + name + "_open", "div", 1);
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token_o.markup = markup;
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token_o.block = true;
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token_o.info = params;
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token_o.map = [ startLine, nextLine ];
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state.md.block.tokenize(state, startLine + 1, nextLine);
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const token_c = state.push("container_" + name + "_close", "div", -1);
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token_c.markup = state.src.slice(start, pos);
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token_c.block = true;
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state.parentType = old_parent;
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state.lineMax = old_line_max;
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state.line = nextLine + (auto_closed ? 1 : 0);
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return true;
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}
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md.block.ruler.before("fence", "container_" + name, container, {
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alt: [ "paragraph", "reference", "blockquote", "list" ]
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});
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md.renderer.rules["container_" + name + "_open"] = render;
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md.renderer.rules["container_" + name + "_close"] = render;
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}
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return container_plugin;
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}));
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