From c2aa7bf38fb30de2d04f87f8e7780e4c768ae6b1 Mon Sep 17 00:00:00 2001 From: Minteck Date: Thu, 20 Jan 2022 13:43:34 +0100 Subject: Initial commit --- .../markdown-it/lib/rules_block/state_block.js | 231 +++++++++++++++++++++ 1 file changed, 231 insertions(+) create mode 100644 node_modules/markdown-it/lib/rules_block/state_block.js (limited to 'node_modules/markdown-it/lib/rules_block/state_block.js') diff --git a/node_modules/markdown-it/lib/rules_block/state_block.js b/node_modules/markdown-it/lib/rules_block/state_block.js new file mode 100644 index 0000000..e42cb4b --- /dev/null +++ b/node_modules/markdown-it/lib/rules_block/state_block.js @@ -0,0 +1,231 @@ +// Parser state class + +'use strict'; + +var Token = require('../token'); +var isSpace = require('../common/utils').isSpace; + + +function StateBlock(src, md, env, tokens) { + var ch, s, start, pos, len, indent, offset, indent_found; + + this.src = src; + + // link to parser instance + this.md = md; + + this.env = env; + + // + // Internal state vartiables + // + + this.tokens = tokens; + + this.bMarks = []; // line begin offsets for fast jumps + this.eMarks = []; // line end offsets for fast jumps + this.tShift = []; // offsets of the first non-space characters (tabs not expanded) + this.sCount = []; // indents for each line (tabs expanded) + + // An amount of virtual spaces (tabs expanded) between beginning + // of each line (bMarks) and real beginning of that line. + // + // It exists only as a hack because blockquotes override bMarks + // losing information in the process. + // + // It's used only when expanding tabs, you can think about it as + // an initial tab length, e.g. bsCount=21 applied to string `\t123` + // means first tab should be expanded to 4-21%4 === 3 spaces. + // + this.bsCount = []; + + // block parser variables + this.blkIndent = 0; // required block content indent (for example, if we are + // inside a list, it would be positioned after list marker) + this.line = 0; // line index in src + this.lineMax = 0; // lines count + this.tight = false; // loose/tight mode for lists + this.ddIndent = -1; // indent of the current dd block (-1 if there isn't any) + this.listIndent = -1; // indent of the current list block (-1 if there isn't any) + + // can be 'blockquote', 'list', 'root', 'paragraph' or 'reference' + // used in lists to determine if they interrupt a paragraph + this.parentType = 'root'; + + this.level = 0; + + // renderer + this.result = ''; + + // Create caches + // Generate markers. + s = this.src; + indent_found = false; + + for (start = pos = indent = offset = 0, len = s.length; pos < len; pos++) { + ch = s.charCodeAt(pos); + + if (!indent_found) { + if (isSpace(ch)) { + indent++; + + if (ch === 0x09) { + offset += 4 - offset % 4; + } else { + offset++; + } + continue; + } else { + indent_found = true; + } + } + + if (ch === 0x0A || pos === len - 1) { + if (ch !== 0x0A) { pos++; } + this.bMarks.push(start); + this.eMarks.push(pos); + this.tShift.push(indent); + this.sCount.push(offset); + this.bsCount.push(0); + + indent_found = false; + indent = 0; + offset = 0; + start = pos + 1; + } + } + + // Push fake entry to simplify cache bounds checks + this.bMarks.push(s.length); + this.eMarks.push(s.length); + this.tShift.push(0); + this.sCount.push(0); + this.bsCount.push(0); + + this.lineMax = this.bMarks.length - 1; // don't count last fake line +} + +// Push new token to "stream". +// +StateBlock.prototype.push = function (type, tag, nesting) { + var token = new Token(type, tag, nesting); + token.block = true; + + if (nesting < 0) this.level--; // closing tag + token.level = this.level; + if (nesting > 0) this.level++; // opening tag + + this.tokens.push(token); + return token; +}; + +StateBlock.prototype.isEmpty = function isEmpty(line) { + return this.bMarks[line] + this.tShift[line] >= this.eMarks[line]; +}; + +StateBlock.prototype.skipEmptyLines = function skipEmptyLines(from) { + for (var max = this.lineMax; from < max; from++) { + if (this.bMarks[from] + this.tShift[from] < this.eMarks[from]) { + break; + } + } + return from; +}; + +// Skip spaces from given position. +StateBlock.prototype.skipSpaces = function skipSpaces(pos) { + var ch; + + for (var max = this.src.length; pos < max; pos++) { + ch = this.src.charCodeAt(pos); + if (!isSpace(ch)) { break; } + } + return pos; +}; + +// Skip spaces from given position in reverse. +StateBlock.prototype.skipSpacesBack = function skipSpacesBack(pos, min) { + if (pos <= min) { return pos; } + + while (pos > min) { + if (!isSpace(this.src.charCodeAt(--pos))) { return pos + 1; } + } + return pos; +}; + +// Skip char codes from given position +StateBlock.prototype.skipChars = function skipChars(pos, code) { + for (var max = this.src.length; pos < max; pos++) { + if (this.src.charCodeAt(pos) !== code) { break; } + } + return pos; +}; + +// Skip char codes reverse from given position - 1 +StateBlock.prototype.skipCharsBack = function skipCharsBack(pos, code, min) { + if (pos <= min) { return pos; } + + while (pos > min) { + if (code !== this.src.charCodeAt(--pos)) { return pos + 1; } + } + return pos; +}; + +// cut lines range from source. +StateBlock.prototype.getLines = function getLines(begin, end, indent, keepLastLF) { + var i, lineIndent, ch, first, last, queue, lineStart, + line = begin; + + if (begin >= end) { + return ''; + } + + queue = new Array(end - begin); + + for (i = 0; line < end; line++, i++) { + lineIndent = 0; + lineStart = first = this.bMarks[line]; + + if (line + 1 < end || keepLastLF) { + // No need for bounds check because we have fake entry on tail. + last = this.eMarks[line] + 1; + } else { + last = this.eMarks[line]; + } + + while (first < last && lineIndent < indent) { + ch = this.src.charCodeAt(first); + + if (isSpace(ch)) { + if (ch === 0x09) { + lineIndent += 4 - (lineIndent + this.bsCount[line]) % 4; + } else { + lineIndent++; + } + } else if (first - lineStart < this.tShift[line]) { + // patched tShift masked characters to look like spaces (blockquotes, list markers) + lineIndent++; + } else { + break; + } + + first++; + } + + if (lineIndent > indent) { + // partially expanding tabs in code blocks, e.g '\t\tfoobar' + // with indent=2 becomes ' \tfoobar' + queue[i] = new Array(lineIndent - indent + 1).join(' ') + this.src.slice(first, last); + } else { + queue[i] = this.src.slice(first, last); + } + } + + return queue.join(''); +}; + +// re-export Token class to use in block rules +StateBlock.prototype.Token = Token; + + +module.exports = StateBlock; -- cgit