The Tor Browser: comparison dom/xslt/xml/txXMLUtils.cpp

--1:000000000000
+:57af130145a2
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+* License, v. 2.0. If a copy of the MPL was not distributed with this
+* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+/*
+* XML utility classes
+*/
+#include "txXMLUtils.h"
+#include "nsString.h"
+#include "nsReadableUtils.h"
+#include "nsGkAtoms.h"
+#include "txStringUtils.h"
+#include "txNamespaceMap.h"
+#include "txXPathTreeWalker.h"
+#include "nsContentUtils.h"
+nsresult
+txExpandedName::init(const nsAString& aQName, txNamespaceMap* aResolver,
+bool aUseDefault)
+{
+const nsAFlatString& qName = PromiseFlatString(aQName);
+const char16_t* colon;
+bool valid = XMLUtils::isValidQName(qName, &colon);
+if (!valid) {
+return NS_ERROR_FAILURE;
+}
+if (colon) {
+nsCOMPtr<nsIAtom> prefix = do_GetAtom(Substring(qName.get(), colon));
+int32_t namespaceID = aResolver->lookupNamespace(prefix);
+if (namespaceID == kNameSpaceID_Unknown)
+return NS_ERROR_FAILURE;
+mNamespaceID = namespaceID;
+const char16_t *end;
+qName.EndReading(end);
+mLocalName = do_GetAtom(Substring(colon + 1, end));
+}
+else {
+mNamespaceID = aUseDefault ? aResolver->lookupNamespace(nullptr) :
+kNameSpaceID_None;
+mLocalName = do_GetAtom(aQName);
+}
+return NS_OK;
+}
+//------------------------------/
+//- Implementation of XMLUtils -/
+//------------------------------/
+// static
+nsresult
+XMLUtils::splitExpatName(const char16_t *aExpatName, nsIAtom **aPrefix,
+nsIAtom **aLocalName, int32_t* aNameSpaceID)
+{
+/**
+*  Expat can send the following:
+*    localName
+*    namespaceURI<separator>localName
+*    namespaceURI<separator>localName<separator>prefix
+*/
+const char16_t *uriEnd = nullptr;
+const char16_t *nameEnd = nullptr;
+const char16_t *pos;
+for (pos = aExpatName; *pos; ++pos) {
+if (*pos == kExpatSeparatorChar) {
+if (uriEnd) {
+nameEnd = pos;
+}
+else {
+uriEnd = pos;
+}
+}
+}
+const char16_t *nameStart;
+if (uriEnd) {
+*aNameSpaceID =
+txNamespaceManager::getNamespaceID(nsDependentSubstring(aExpatName,
+uriEnd));
+if (*aNameSpaceID == kNameSpaceID_Unknown) {
+return NS_ERROR_FAILURE;
+}
+nameStart = (uriEnd + 1);
+if (nameEnd)  {
+const char16_t *prefixStart = nameEnd + 1;
+*aPrefix = NS_NewAtom(Substring(prefixStart, pos)).take();
+if (!*aPrefix) {
+return NS_ERROR_OUT_OF_MEMORY;
+}
+}
+else {
+nameEnd = pos;
+*aPrefix = nullptr;
+}
+}
+else {
+*aNameSpaceID = kNameSpaceID_None;
+nameStart = aExpatName;
+nameEnd = pos;
+*aPrefix = nullptr;
+}
+*aLocalName = NS_NewAtom(Substring(nameStart, nameEnd)).take();
+return *aLocalName ? NS_OK : NS_ERROR_OUT_OF_MEMORY;
+}
+nsresult
+XMLUtils::splitQName(const nsAString& aName, nsIAtom** aPrefix,
+nsIAtom** aLocalName)
+{
+const nsAFlatString& qName = PromiseFlatString(aName);
+const char16_t* colon;
+bool valid = XMLUtils::isValidQName(qName, &colon);
+if (!valid) {
+return NS_ERROR_FAILURE;
+}
+if (colon) {
+const char16_t *end;
+qName.EndReading(end);
+*aPrefix = NS_NewAtom(Substring(qName.get(), colon)).take();
+*aLocalName = NS_NewAtom(Substring(colon + 1, end)).take();
+}
+else {
+*aPrefix = nullptr;
+*aLocalName = NS_NewAtom(aName).take();
+}
+return NS_OK;
+}
+/**
+* Returns true if the given string has only whitespace characters
+*/
+bool XMLUtils::isWhitespace(const nsAFlatString& aText)
+{
+nsAFlatString::const_char_iterator start, end;
+aText.BeginReading(start);
+aText.EndReading(end);
+for ( ; start != end; ++start) {
+if (!isWhitespace(*start)) {
+return false;
+}
+}
+return true;
+}
+/**
+* Normalizes the value of a XML processing instruction
+**/
+void XMLUtils::normalizePIValue(nsAString& piValue)
+{
+nsAutoString origValue(piValue);
+uint32_t origLength = origValue.Length();
+uint32_t conversionLoop = 0;
+char16_t prevCh = 0;
+piValue.Truncate();
+while (conversionLoop < origLength) {
+char16_t ch = origValue.CharAt(conversionLoop);
+switch (ch) {
+case '>':
+{
+if (prevCh == '?') {
+piValue.Append(char16_t(' '));
+}
+break;
+}
+default:
+{
+break;
+}
+}
+piValue.Append(ch);
+prevCh = ch;
+++conversionLoop;
+}
+}
+//static
+bool XMLUtils::isValidQName(const nsAFlatString& aQName,
+const char16_t** aColon)
+{
+return NS_SUCCEEDED(nsContentUtils::CheckQName(aQName, true, aColon));
+}
+//static
+bool XMLUtils::getXMLSpacePreserve(const txXPathNode& aNode)
+{
+nsAutoString value;
+txXPathTreeWalker walker(aNode);
+do {
+if (walker.getAttr(nsGkAtoms::space, kNameSpaceID_XML, value)) {
+if (TX_StringEqualsAtom(value, nsGkAtoms::preserve)) {
+return true;
+}
+if (TX_StringEqualsAtom(value, nsGkAtoms::_default)) {
+return false;
+}
+}
+} while (walker.moveToParent());
+return false;
+}

The Tor Browser / file comparison

comparison: dom/xslt/xml/txXMLUtils.cpp

dom/xslt/xml/txXMLUtils.cpp