v6

node_modules/parse5/lib/parser/formatting_element_list.js

@@ -0,0 +1,167 @@
+'use strict';
+
+//Const
+var NOAH_ARK_CAPACITY = 3;
+
+//List of formatting elements
+var FormattingElementList = module.exports = function (treeAdapter) {
+    this.length = 0;
+    this.entries = [];
+    this.treeAdapter = treeAdapter;
+    this.bookmark = null;
+};
+
+//Entry types
+FormattingElementList.MARKER_ENTRY = 'MARKER_ENTRY';
+FormattingElementList.ELEMENT_ENTRY = 'ELEMENT_ENTRY';
+
+//Noah Ark's condition
+//OPTIMIZATION: at first we try to find possible candidates for exclusion using
+//lightweight heuristics without thorough attributes check.
+FormattingElementList.prototype._getNoahArkConditionCandidates = function (newElement) {
+    var candidates = [];
+
+    if (this.length >= NOAH_ARK_CAPACITY) {
+        var neAttrsLength = this.treeAdapter.getAttrList(newElement).length,
+            neTagName = this.treeAdapter.getTagName(newElement),
+            neNamespaceURI = this.treeAdapter.getNamespaceURI(newElement);
+
+        for (var i = this.length - 1; i >= 0; i--) {
+            var entry = this.entries[i];
+
+            if (entry.type === FormattingElementList.MARKER_ENTRY)
+                break;
+
+            var element = entry.element,
+                elementAttrs = this.treeAdapter.getAttrList(element),
+                isCandidate = this.treeAdapter.getTagName(element) === neTagName &&
+                              this.treeAdapter.getNamespaceURI(element) === neNamespaceURI &&
+                              elementAttrs.length === neAttrsLength;
+
+            if (isCandidate)
+                candidates.push({idx: i, attrs: elementAttrs});
+        }
+    }
+
+    return candidates.length < NOAH_ARK_CAPACITY ? [] : candidates;
+};
+
+FormattingElementList.prototype._ensureNoahArkCondition = function (newElement) {
+    var candidates = this._getNoahArkConditionCandidates(newElement),
+        cLength = candidates.length;
+
+    if (cLength) {
+        var neAttrs = this.treeAdapter.getAttrList(newElement),
+            neAttrsLength = neAttrs.length,
+            neAttrsMap = Object.create(null);
+
+        //NOTE: build attrs map for the new element so we can perform fast lookups
+        for (var i = 0; i < neAttrsLength; i++) {
+            var neAttr = neAttrs[i];
+
+            neAttrsMap[neAttr.name] = neAttr.value;
+        }
+
+        for (i = 0; i < neAttrsLength; i++) {
+            for (var j = 0; j < cLength; j++) {
+                var cAttr = candidates[j].attrs[i];
+
+                if (neAttrsMap[cAttr.name] !== cAttr.value) {
+                    candidates.splice(j, 1);
+                    cLength--;
+                }
+
+                if (candidates.length < NOAH_ARK_CAPACITY)
+                    return;
+            }
+        }
+
+        //NOTE: remove bottommost candidates until Noah's Ark condition will not be met
+        for (i = cLength - 1; i >= NOAH_ARK_CAPACITY - 1; i--) {
+            this.entries.splice(candidates[i].idx, 1);
+            this.length--;
+        }
+    }
+};
+
+//Mutations
+FormattingElementList.prototype.insertMarker = function () {
+    this.entries.push({type: FormattingElementList.MARKER_ENTRY});
+    this.length++;
+};
+
+FormattingElementList.prototype.pushElement = function (element, token) {
+    this._ensureNoahArkCondition(element);
+
+    this.entries.push({
+        type: FormattingElementList.ELEMENT_ENTRY,
+        element: element,
+        token: token
+    });
+
+    this.length++;
+};
+
+FormattingElementList.prototype.insertElementAfterBookmark = function (element, token) {
+    var bookmarkIdx = this.length - 1;
+
+    for (; bookmarkIdx >= 0; bookmarkIdx--) {
+        if (this.entries[bookmarkIdx] === this.bookmark)
+            break;
+    }
+
+    this.entries.splice(bookmarkIdx + 1, 0, {
+        type: FormattingElementList.ELEMENT_ENTRY,
+        element: element,
+        token: token
+    });
+
+    this.length++;
+};
+
+FormattingElementList.prototype.removeEntry = function (entry) {
+    for (var i = this.length - 1; i >= 0; i--) {
+        if (this.entries[i] === entry) {
+            this.entries.splice(i, 1);
+            this.length--;
+            break;
+        }
+    }
+};
+
+FormattingElementList.prototype.clearToLastMarker = function () {
+    while (this.length) {
+        var entry = this.entries.pop();
+
+        this.length--;
+
+        if (entry.type === FormattingElementList.MARKER_ENTRY)
+            break;
+    }
+};
+
+//Search
+FormattingElementList.prototype.getElementEntryInScopeWithTagName = function (tagName) {
+    for (var i = this.length - 1; i >= 0; i--) {
+        var entry = this.entries[i];
+
+        if (entry.type === FormattingElementList.MARKER_ENTRY)
+            return null;
+
+        if (this.treeAdapter.getTagName(entry.element) === tagName)
+            return entry;
+    }
+
+    return null;
+};
+
+FormattingElementList.prototype.getElementEntry = function (element) {
+    for (var i = this.length - 1; i >= 0; i--) {
+        var entry = this.entries[i];
+
+        if (entry.type === FormattingElementList.ELEMENT_ENTRY && entry.element === element)
+            return entry;
+    }
+
+    return null;
+};

node_modules/parse5/lib/parser/open_element_stack.js

@@ -0,0 +1,395 @@
+'use strict';
+
+var HTML = require('../common/html');
+
+//Aliases
+var $ = HTML.TAG_NAMES,
+    NS = HTML.NAMESPACES;
+
+//Element utils
+
+//OPTIMIZATION: Integer comparisons are low-cost, so we can use very fast tag name length filters here.
+//It's faster than using dictionary.
+function isImpliedEndTagRequired(tn) {
+    switch (tn.length) {
+        case 1:
+            return tn === $.P;
+
+        case 2:
+            return tn === $.RB || tn === $.RP || tn === $.RT || tn === $.DD || tn === $.DT || tn === $.LI;
+
+        case 3:
+            return tn === $.RTC;
+
+        case 6:
+            return tn === $.OPTION;
+
+        case 8:
+            return tn === $.OPTGROUP || tn === $.MENUITEM;
+    }
+
+    return false;
+}
+
+function isScopingElement(tn, ns) {
+    switch (tn.length) {
+        case 2:
+            if (tn === $.TD || tn === $.TH)
+                return ns === NS.HTML;
+
+            else if (tn === $.MI || tn === $.MO || tn === $.MN || tn === $.MS)
+                return ns === NS.MATHML;
+
+            break;
+
+        case 4:
+            if (tn === $.HTML)
+                return ns === NS.HTML;
+
+            else if (tn === $.DESC)
+                return ns === NS.SVG;
+
+            break;
+
+        case 5:
+            if (tn === $.TABLE)
+                return ns === NS.HTML;
+
+            else if (tn === $.MTEXT)
+                return ns === NS.MATHML;
+
+            else if (tn === $.TITLE)
+                return ns === NS.SVG;
+
+            break;
+
+        case 6:
+            return (tn === $.APPLET || tn === $.OBJECT) && ns === NS.HTML;
+
+        case 7:
+            return (tn === $.CAPTION || tn === $.MARQUEE) && ns === NS.HTML;
+
+        case 8:
+            return tn === $.TEMPLATE && ns === NS.HTML;
+
+        case 13:
+            return tn === $.FOREIGN_OBJECT && ns === NS.SVG;
+
+        case 14:
+            return tn === $.ANNOTATION_XML && ns === NS.MATHML;
+    }
+
+    return false;
+}
+
+//Stack of open elements
+var OpenElementStack = module.exports = function (document, treeAdapter) {
+    this.stackTop = -1;
+    this.items = [];
+    this.current = document;
+    this.currentTagName = null;
+    this.currentTmplContent = null;
+    this.tmplCount = 0;
+    this.treeAdapter = treeAdapter;
+};
+
+//Index of element
+OpenElementStack.prototype._indexOf = function (element) {
+    var idx = -1;
+
+    for (var i = this.stackTop; i >= 0; i--) {
+        if (this.items[i] === element) {
+            idx = i;
+            break;
+        }
+    }
+    return idx;
+};
+
+//Update current element
+OpenElementStack.prototype._isInTemplate = function () {
+    return this.currentTagName === $.TEMPLATE && this.treeAdapter.getNamespaceURI(this.current) === NS.HTML;
+};
+
+OpenElementStack.prototype._updateCurrentElement = function () {
+    this.current = this.items[this.stackTop];
+    this.currentTagName = this.current && this.treeAdapter.getTagName(this.current);
+
+    this.currentTmplContent = this._isInTemplate() ? this.treeAdapter.getTemplateContent(this.current) : null;
+};
+
+//Mutations
+OpenElementStack.prototype.push = function (element) {
+    this.items[++this.stackTop] = element;
+    this._updateCurrentElement();
+
+    if (this._isInTemplate())
+        this.tmplCount++;
+
+};
+
+OpenElementStack.prototype.pop = function () {
+    this.stackTop--;
+
+    if (this.tmplCount > 0 && this._isInTemplate())
+        this.tmplCount--;
+
+    this._updateCurrentElement();
+};
+
+OpenElementStack.prototype.replace = function (oldElement, newElement) {
+    var idx = this._indexOf(oldElement);
+
+    this.items[idx] = newElement;
+
+    if (idx === this.stackTop)
+        this._updateCurrentElement();
+};
+
+OpenElementStack.prototype.insertAfter = function (referenceElement, newElement) {
+    var insertionIdx = this._indexOf(referenceElement) + 1;
+
+    this.items.splice(insertionIdx, 0, newElement);
+
+    if (insertionIdx === ++this.stackTop)
+        this._updateCurrentElement();
+};
+
+OpenElementStack.prototype.popUntilTagNamePopped = function (tagName) {
+    while (this.stackTop > -1) {
+        var tn = this.currentTagName,
+            ns = this.treeAdapter.getNamespaceURI(this.current);
+
+        this.pop();
+
+        if (tn === tagName && ns === NS.HTML)
+            break;
+    }
+};
+
+OpenElementStack.prototype.popUntilElementPopped = function (element) {
+    while (this.stackTop > -1) {
+        var poppedElement = this.current;
+
+        this.pop();
+
+        if (poppedElement === element)
+            break;
+    }
+};
+
+OpenElementStack.prototype.popUntilNumberedHeaderPopped = function () {
+    while (this.stackTop > -1) {
+        var tn = this.currentTagName,
+            ns = this.treeAdapter.getNamespaceURI(this.current);
+
+        this.pop();
+
+        if (tn === $.H1 || tn === $.H2 || tn === $.H3 || tn === $.H4 || tn === $.H5 || tn === $.H6 && ns === NS.HTML)
+            break;
+    }
+};
+
+OpenElementStack.prototype.popUntilTableCellPopped = function () {
+    while (this.stackTop > -1) {
+        var tn = this.currentTagName,
+            ns = this.treeAdapter.getNamespaceURI(this.current);
+
+        this.pop();
+
+        if (tn === $.TD || tn === $.TH && ns === NS.HTML)
+            break;
+    }
+};
+
+OpenElementStack.prototype.popAllUpToHtmlElement = function () {
+    //NOTE: here we assume that root <html> element is always first in the open element stack, so
+    //we perform this fast stack clean up.
+    this.stackTop = 0;
+    this._updateCurrentElement();
+};
+
+OpenElementStack.prototype.clearBackToTableContext = function () {
+    while (this.currentTagName !== $.TABLE &&
+           this.currentTagName !== $.TEMPLATE &&
+           this.currentTagName !== $.HTML ||
+           this.treeAdapter.getNamespaceURI(this.current) !== NS.HTML)
+        this.pop();
+};
+
+OpenElementStack.prototype.clearBackToTableBodyContext = function () {
+    while (this.currentTagName !== $.TBODY &&
+           this.currentTagName !== $.TFOOT &&
+           this.currentTagName !== $.THEAD &&
+           this.currentTagName !== $.TEMPLATE &&
+           this.currentTagName !== $.HTML ||
+           this.treeAdapter.getNamespaceURI(this.current) !== NS.HTML)
+        this.pop();
+};
+
+OpenElementStack.prototype.clearBackToTableRowContext = function () {
+    while (this.currentTagName !== $.TR &&
+           this.currentTagName !== $.TEMPLATE &&
+           this.currentTagName !== $.HTML ||
+           this.treeAdapter.getNamespaceURI(this.current) !== NS.HTML)
+        this.pop();
+};
+
+OpenElementStack.prototype.remove = function (element) {
+    for (var i = this.stackTop; i >= 0; i--) {
+        if (this.items[i] === element) {
+            this.items.splice(i, 1);
+            this.stackTop--;
+            this._updateCurrentElement();
+            break;
+        }
+    }
+};
+
+//Search
+OpenElementStack.prototype.tryPeekProperlyNestedBodyElement = function () {
+    //Properly nested <body> element (should be second element in stack).
+    var element = this.items[1];
+
+    return element && this.treeAdapter.getTagName(element) === $.BODY ? element : null;
+};
+
+OpenElementStack.prototype.contains = function (element) {
+    return this._indexOf(element) > -1;
+};
+
+OpenElementStack.prototype.getCommonAncestor = function (element) {
+    var elementIdx = this._indexOf(element);
+
+    return --elementIdx >= 0 ? this.items[elementIdx] : null;
+};
+
+OpenElementStack.prototype.isRootHtmlElementCurrent = function () {
+    return this.stackTop === 0 && this.currentTagName === $.HTML;
+};
+
+//Element in scope
+OpenElementStack.prototype.hasInScope = function (tagName) {
+    for (var i = this.stackTop; i >= 0; i--) {
+        var tn = this.treeAdapter.getTagName(this.items[i]),
+            ns = this.treeAdapter.getNamespaceURI(this.items[i]);
+
+        if (tn === tagName && ns === NS.HTML)
+            return true;
+
+        if (isScopingElement(tn, ns))
+            return false;
+    }
+
+    return true;
+};
+
+OpenElementStack.prototype.hasNumberedHeaderInScope = function () {
+    for (var i = this.stackTop; i >= 0; i--) {
+        var tn = this.treeAdapter.getTagName(this.items[i]),
+            ns = this.treeAdapter.getNamespaceURI(this.items[i]);
+
+        if ((tn === $.H1 || tn === $.H2 || tn === $.H3 || tn === $.H4 || tn === $.H5 || tn === $.H6) && ns === NS.HTML)
+            return true;
+
+        if (isScopingElement(tn, ns))
+            return false;
+    }
+
+    return true;
+};
+
+OpenElementStack.prototype.hasInListItemScope = function (tagName) {
+    for (var i = this.stackTop; i >= 0; i--) {
+        var tn = this.treeAdapter.getTagName(this.items[i]),
+            ns = this.treeAdapter.getNamespaceURI(this.items[i]);
+
+        if (tn === tagName && ns === NS.HTML)
+            return true;
+
+        if ((tn === $.UL || tn === $.OL) && ns === NS.HTML || isScopingElement(tn, ns))
+            return false;
+    }
+
+    return true;
+};
+
+OpenElementStack.prototype.hasInButtonScope = function (tagName) {
+    for (var i = this.stackTop; i >= 0; i--) {
+        var tn = this.treeAdapter.getTagName(this.items[i]),
+            ns = this.treeAdapter.getNamespaceURI(this.items[i]);
+
+        if (tn === tagName && ns === NS.HTML)
+            return true;
+
+        if (tn === $.BUTTON && ns === NS.HTML || isScopingElement(tn, ns))
+            return false;
+    }
+
+    return true;
+};
+
+OpenElementStack.prototype.hasInTableScope = function (tagName) {
+    for (var i = this.stackTop; i >= 0; i--) {
+        var tn = this.treeAdapter.getTagName(this.items[i]),
+            ns = this.treeAdapter.getNamespaceURI(this.items[i]);
+
+        if (ns !== NS.HTML)
+            continue;
+
+        if (tn === tagName)
+            return true;
+
+        if (tn === $.TABLE || tn === $.TEMPLATE || tn === $.HTML)
+            return false;
+    }
+
+    return true;
+};
+
+OpenElementStack.prototype.hasTableBodyContextInTableScope = function () {
+    for (var i = this.stackTop; i >= 0; i--) {
+        var tn = this.treeAdapter.getTagName(this.items[i]),
+            ns = this.treeAdapter.getNamespaceURI(this.items[i]);
+
+        if (ns !== NS.HTML)
+            continue;
+
+        if (tn === $.TBODY || tn === $.THEAD || tn === $.TFOOT)
+            return true;
+
+        if (tn === $.TABLE || tn === $.HTML)
+            return false;
+    }
+
+    return true;
+};
+
+OpenElementStack.prototype.hasInSelectScope = function (tagName) {
+    for (var i = this.stackTop; i >= 0; i--) {
+        var tn = this.treeAdapter.getTagName(this.items[i]),
+            ns = this.treeAdapter.getNamespaceURI(this.items[i]);
+
+        if (ns !== NS.HTML)
+            continue;
+
+        if (tn === tagName)
+            return true;
+
+        if (tn !== $.OPTION && tn !== $.OPTGROUP)
+            return false;
+    }
+
+    return true;
+};
+
+//Implied end tags
+OpenElementStack.prototype.generateImpliedEndTags = function () {
+    while (isImpliedEndTagRequired(this.currentTagName))
+        this.pop();
+};
+
+OpenElementStack.prototype.generateImpliedEndTagsWithExclusion = function (exclusionTagName) {
+    while (isImpliedEndTagRequired(this.currentTagName) && this.currentTagName !== exclusionTagName)
+        this.pop();
+};

node_modules/parse5/lib/parser/parser_stream.js

@@ -0,0 +1,76 @@
+'use strict';
+
+var WritableStream = require('stream').Writable,
+    inherits = require('util').inherits,
+    Parser = require('./index');
+
+var ParserStream = module.exports = function (options) {
+    WritableStream.call(this);
+
+    this.parser = new Parser(options);
+
+    this.lastChunkWritten = false;
+    this.writeCallback = null;
+    this.pausedByScript = false;
+
+    this.document = this.parser.treeAdapter.createDocument();
+
+    this.pendingHtmlInsertions = [];
+
+    this._resume = this._resume.bind(this);
+    this._documentWrite = this._documentWrite.bind(this);
+    this._scriptHandler = this._scriptHandler.bind(this);
+
+    this.parser._bootstrap(this.document, null);
+};
+
+inherits(ParserStream, WritableStream);
+
+//WritableStream implementation
+ParserStream.prototype._write = function (chunk, encoding, callback) {
+    this.writeCallback = callback;
+    this.parser.tokenizer.write(chunk.toString('utf8'), this.lastChunkWritten);
+    this._runParsingLoop();
+};
+
+ParserStream.prototype.end = function (chunk, encoding, callback) {
+    this.lastChunkWritten = true;
+    WritableStream.prototype.end.call(this, chunk || '', encoding, callback);
+};
+
+//Scriptable parser implementation
+ParserStream.prototype._runParsingLoop = function () {
+    this.parser.runParsingLoopForCurrentChunk(this.writeCallback, this._scriptHandler);
+};
+
+ParserStream.prototype._resume = function () {
+    if (!this.pausedByScript)
+        throw new Error('Parser was already resumed');
+
+    while (this.pendingHtmlInsertions.length) {
+        var html = this.pendingHtmlInsertions.pop();
+
+        this.parser.tokenizer.insertHtmlAtCurrentPos(html);
+    }
+
+    this.pausedByScript = false;
+
+    //NOTE: keep parsing if we don't wait for the next input chunk
+    if (this.parser.tokenizer.active)
+        this._runParsingLoop();
+};
+
+ParserStream.prototype._documentWrite = function (html) {
+    if (!this.parser.stopped)
+        this.pendingHtmlInsertions.push(html);
+};
+
+ParserStream.prototype._scriptHandler = function (scriptElement) {
+    if (this.listeners('script').length) {
+        this.pausedByScript = true;
+        this.emit('script', scriptElement, this._documentWrite, this._resume);
+    }
+    else
+        this._runParsingLoop();
+};
+

node_modules/parse5/lib/parser/plain_text_conversion_stream.js

@@ -0,0 +1,20 @@
+'use strict';
+
+var ParserStream = require('./parser_stream'),
+    inherits = require('util').inherits,
+    $ = require('../common/html').TAG_NAMES;
+
+var PlainTextConversionStream = module.exports = function (options) {
+    ParserStream.call(this, options);
+
+    // NOTE: see https://html.spec.whatwg.org/#read-text
+    this.parser._insertFakeElement($.HTML);
+    this.parser._insertFakeElement($.HEAD);
+    this.parser.openElements.pop();
+    this.parser._insertFakeElement($.BODY);
+    this.parser._insertFakeElement($.PRE);
+    this.parser.treeAdapter.insertText(this.parser.openElements.current, '\n');
+    this.parser.switchToPlaintextParsing();
+};
+
+inherits(PlainTextConversionStream, ParserStream);