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| 1 | +'use strict'; |
| 2 | + |
| 3 | +/* Dependencies. */ |
| 4 | +var Parser = require('parse5/lib/parser'); |
| 5 | +var pos = require('unist-util-position'); |
| 6 | +var fromParse5 = require('hast-util-from-parse5'); |
| 7 | +var toParse5 = require('hast-util-to-parse5'); |
| 8 | +var voids = require('html-void-elements'); |
| 9 | +var ns = require('web-namespaces'); |
| 10 | +var zwitch = require('zwitch'); |
| 11 | + |
| 12 | +/* Expose. */ |
| 13 | +module.exports = wrap; |
| 14 | + |
| 15 | +/* Constants. */ |
| 16 | +var IN_TEMPLATE_MODE = 'IN_TEMPLATE_MODE'; |
| 17 | +var CHARACTER_TOKEN = 'CHARACTER_TOKEN'; |
| 18 | +var START_TAG_TOKEN = 'START_TAG_TOKEN'; |
| 19 | +var END_TAG_TOKEN = 'END_TAG_TOKEN'; |
| 20 | +var HIBERNATION_TOKEN = 'HIBERNATION_TOKEN'; |
| 21 | +var COMMENT_TOKEN = 'COMMENT_TOKEN'; |
| 22 | +var DOCTYPE_TOKEN = 'DOCTYPE_TOKEN'; |
| 23 | +var DOCUMENT = 'document'; |
| 24 | +var FRAGMENT = 'fragment'; |
| 25 | + |
| 26 | +function wrap(tree, file) { |
| 27 | + var parser = new Parser({locationInfo: true}); |
| 28 | + var one = zwitch('type'); |
| 29 | + var mode = inferMode(tree); |
| 30 | + var preprocessor; |
| 31 | + var result; |
| 32 | + |
| 33 | + one.handlers.root = root; |
| 34 | + one.handlers.element = element; |
| 35 | + one.handlers.text = text; |
| 36 | + one.handlers.comment = comment; |
| 37 | + one.handlers.doctype = doctype; |
| 38 | + one.handlers.raw = raw; |
| 39 | + one.unknown = unknown; |
| 40 | + |
| 41 | + result = fromParse5(mode === FRAGMENT ? fragment() : document(), file); |
| 42 | + |
| 43 | + /* Unpack if possible and when not given a `root`. */ |
| 44 | + if (tree.type !== 'root' && result.children.length === 1) { |
| 45 | + return result.children[0]; |
| 46 | + } |
| 47 | + |
| 48 | + return result; |
| 49 | + |
| 50 | + function fragment() { |
| 51 | + var context; |
| 52 | + var mock; |
| 53 | + var doc; |
| 54 | + |
| 55 | + context = { |
| 56 | + nodeName: 'template', |
| 57 | + tagName: 'template', |
| 58 | + attrs: [], |
| 59 | + namespaceURI: ns.html, |
| 60 | + childNodes: [] |
| 61 | + }; |
| 62 | + |
| 63 | + mock = { |
| 64 | + nodeName: 'documentmock', |
| 65 | + tagName: 'documentmock', |
| 66 | + attrs: [], |
| 67 | + namespaceURI: ns.html, |
| 68 | + childNodes: [] |
| 69 | + }; |
| 70 | + |
| 71 | + doc = { |
| 72 | + nodeName: '#document-fragment', |
| 73 | + childNodes: [] |
| 74 | + }; |
| 75 | + |
| 76 | + parser._bootstrap(mock, context); |
| 77 | + parser._pushTmplInsertionMode(IN_TEMPLATE_MODE); |
| 78 | + parser._initTokenizerForFragmentParsing(); |
| 79 | + parser._insertFakeRootElement(); |
| 80 | + parser._resetInsertionMode(); |
| 81 | + parser._findFormInFragmentContext(); |
| 82 | + |
| 83 | + preprocessor = parser.tokenizer.preprocessor; |
| 84 | + |
| 85 | + one(tree); |
| 86 | + |
| 87 | + parser._adoptNodes(mock.childNodes[0], doc); |
| 88 | + |
| 89 | + return doc; |
| 90 | + } |
| 91 | + |
| 92 | + function document() { |
| 93 | + var doc = parser.treeAdapter.createDocument(); |
| 94 | + |
| 95 | + parser._bootstrap(doc, null); |
| 96 | + |
| 97 | + one(tree); |
| 98 | + |
| 99 | + return doc; |
| 100 | + } |
| 101 | + |
| 102 | + function all(nodes) { |
| 103 | + var length = nodes.length; |
| 104 | + var index = -1; |
| 105 | + |
| 106 | + while (++index < length) { |
| 107 | + one(nodes[index]); |
| 108 | + } |
| 109 | + } |
| 110 | + |
| 111 | + function root(node) { |
| 112 | + all(node.children); |
| 113 | + } |
| 114 | + |
| 115 | + function element(node) { |
| 116 | + var empty = voids.indexOf(node.tagName) !== -1; |
| 117 | + |
| 118 | + parser._processToken(startTag(node, empty), ns.html); |
| 119 | + |
| 120 | + all(node.children); |
| 121 | + |
| 122 | + if (!empty) { |
| 123 | + parser._processToken(endTag(node)); |
| 124 | + } |
| 125 | + } |
| 126 | + |
| 127 | + function text(node) { |
| 128 | + parser._processToken({ |
| 129 | + type: CHARACTER_TOKEN, |
| 130 | + chars: node.value, |
| 131 | + location: { |
| 132 | + line: pos.start(node).line, |
| 133 | + col: pos.start(node).column, |
| 134 | + startOffset: pos.start(node).offset, |
| 135 | + endOffset: pos.end(node).offset |
| 136 | + } |
| 137 | + }); |
| 138 | + } |
| 139 | + |
| 140 | + function doctype(node) { |
| 141 | + var p5 = toParse5(node); |
| 142 | + parser._processToken({ |
| 143 | + type: DOCTYPE_TOKEN, |
| 144 | + name: p5.name, |
| 145 | + forceQuirks: false, |
| 146 | + publicId: p5.publicId, |
| 147 | + systemId: p5.systemId |
| 148 | + }); |
| 149 | + } |
| 150 | + |
| 151 | + function comment(node) { |
| 152 | + parser._processToken({ |
| 153 | + type: COMMENT_TOKEN, |
| 154 | + data: node.value, |
| 155 | + location: { |
| 156 | + line: pos.start(node).line, |
| 157 | + col: pos.start(node).column, |
| 158 | + startOffset: pos.start(node).offset, |
| 159 | + endOffset: pos.end(node).offset |
| 160 | + } |
| 161 | + }); |
| 162 | + } |
| 163 | + |
| 164 | + function raw(node) { |
| 165 | + var start = pos.start(node).offset; |
| 166 | + |
| 167 | + preprocessor.html = null; |
| 168 | + preprocessor.lastCharPos = preprocessor.pos = -1; |
| 169 | + |
| 170 | + if (start !== null) { |
| 171 | + preprocessor.droppedBufferSize = start; |
| 172 | + } |
| 173 | + |
| 174 | + parser.tokenizer.write(node.value); |
| 175 | + |
| 176 | + run(parser); |
| 177 | + } |
| 178 | +} |
| 179 | + |
| 180 | +function run(p) { |
| 181 | + var tokenizer = p.tokenizer; |
| 182 | + var token; |
| 183 | + |
| 184 | + while (!p.stopped) { |
| 185 | + p._setupTokenizerCDATAMode(); |
| 186 | + |
| 187 | + token = tokenizer.getNextToken(); |
| 188 | + |
| 189 | + if (token.type === HIBERNATION_TOKEN) { |
| 190 | + token = tokenizer.currentCharacterToken || tokenizer.currentToken; |
| 191 | + |
| 192 | + if (token) { |
| 193 | + p._processInputToken(token); |
| 194 | + } |
| 195 | + |
| 196 | + tokenizer.currentCharacterToken = tokenizer.currentToken = null; |
| 197 | + |
| 198 | + break; |
| 199 | + } |
| 200 | + |
| 201 | + p._processInputToken(token); |
| 202 | + } |
| 203 | +} |
| 204 | + |
| 205 | +function startTag(node, empty) { |
| 206 | + var start = pos.start(node); |
| 207 | + |
| 208 | + return { |
| 209 | + type: START_TAG_TOKEN, |
| 210 | + tagName: node.tagName, |
| 211 | + selfClosing: false, |
| 212 | + attrs: attributes(node), |
| 213 | + location: { |
| 214 | + line: start.line, |
| 215 | + col: start.column, |
| 216 | + startOffset: start.offset, |
| 217 | + endOffset: start.offset, |
| 218 | + attrs: {}, |
| 219 | + startTag: { |
| 220 | + line: start.line, |
| 221 | + col: start.column, |
| 222 | + startOffset: start.offset, |
| 223 | + endOffset: empty ? pos.end(node).offset : start.offset |
| 224 | + } |
| 225 | + } |
| 226 | + }; |
| 227 | +} |
| 228 | + |
| 229 | +function attributes(node) { |
| 230 | + return toParse5({ |
| 231 | + type: 'element', |
| 232 | + properties: node.properties |
| 233 | + }).attrs; |
| 234 | +} |
| 235 | + |
| 236 | +function endTag(node) { |
| 237 | + var end = pos.end(node); |
| 238 | + |
| 239 | + return { |
| 240 | + type: END_TAG_TOKEN, |
| 241 | + tagName: node.tagName, |
| 242 | + attrs: [], |
| 243 | + location: { |
| 244 | + line: end.line, |
| 245 | + col: end.column, |
| 246 | + startOffset: end.offset, |
| 247 | + endOffset: end.offset |
| 248 | + } |
| 249 | + }; |
| 250 | +} |
| 251 | + |
| 252 | +function unknown(node) { |
| 253 | + throw new Error('Cannot compile `' + node.type + '` node'); |
| 254 | +} |
| 255 | + |
| 256 | +function inferMode(node) { |
| 257 | + var head = node.type === 'root' ? node.children[0] : node; |
| 258 | + |
| 259 | + if (head && (head.type === 'doctype' || head.tagName === 'html')) { |
| 260 | + return DOCUMENT; |
| 261 | + } |
| 262 | + |
| 263 | + return FRAGMENT; |
| 264 | +} |
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