144 lines
4.1 KiB
JavaScript
144 lines
4.1 KiB
JavaScript
// Process block-level custom containers
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//
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'use strict';
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module.exports = function container_plugin(md, name, options) {
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function validateDefault(params) {
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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, self) {
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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].attrPush([ 'class', name ]);
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}
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return self.renderToken(tokens, idx, _options, env, self);
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}
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options = options || {};
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var min_markers = 3,
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marker_str = options.marker || ':',
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marker_char = marker_str.charCodeAt(0),
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marker_len = marker_str.length,
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validate = options.validate || validateDefault,
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render = options.render || renderDefault;
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function container(state, startLine, endLine, silent) {
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var pos, nextLine, marker_count, markup, params, token,
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old_parent, old_line_max,
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auto_closed = false,
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start = state.bMarks[startLine] + state.tShift[startLine],
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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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//
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if (marker_char !== state.src.charCodeAt(start)) { return false; }
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// Check out the rest of the marker string
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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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marker_count = Math.floor((pos - start) / marker_len);
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if (marker_count < min_markers) { return false; }
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pos -= (pos - start) % marker_len;
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markup = state.src.slice(start, pos);
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params = state.src.slice(pos, max);
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if (!validate(params)) { return false; }
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// Since start is found, we can report success here in validation mode
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//
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if (silent) { return true; }
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// Search for the end of the block
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//
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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)) { continue; }
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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) { continue; }
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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) { continue; }
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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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old_parent = state.parentType;
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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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token = state.push('container_' + name + '_open', 'div', 1);
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token.markup = markup;
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token.block = true;
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token.info = params;
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token.map = [ startLine, nextLine ];
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state.md.block.tokenize(state, startLine + 1, nextLine);
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token = state.push('container_' + name + '_close', 'div', -1);
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token.markup = state.src.slice(start, pos);
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token.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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