зеркало из https://github.com/mozilla/pjs.git
255 строки
7.5 KiB
C++
255 строки
7.5 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is TransforMiiX XSLT processor code.
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*
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* The Initial Developer of the Original Code is
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* The MITRE Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1999
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Keith Visco <kvisco@ziplink.net> (Original Author)
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* Lidong <lidong520@263.net>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/*
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* XML utility classes
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*/
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#include "XMLUtils.h"
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#include "nsString.h"
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#include "nsReadableUtils.h"
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#include "txAtoms.h"
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#include "txStringUtils.h"
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#include "txNamespaceMap.h"
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#include "txXPathTreeWalker.h"
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nsresult
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txExpandedName::init(const nsAString& aQName, txNamespaceMap* aResolver,
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MBool aUseDefault)
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{
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const nsAFlatString& qName = PromiseFlatString(aQName);
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const PRUnichar* colon;
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PRBool valid = XMLUtils::isValidQName(qName, &colon);
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if (!valid) {
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return NS_ERROR_FAILURE;
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}
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if (colon) {
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nsCOMPtr<nsIAtom> prefix = do_GetAtom(Substring(qName.get(), colon));
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PRInt32 namespaceID = aResolver->lookupNamespace(prefix);
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if (namespaceID == kNameSpaceID_Unknown)
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return NS_ERROR_FAILURE;
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mNamespaceID = namespaceID;
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const PRUnichar *end;
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qName.EndReading(end);
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mLocalName = do_GetAtom(Substring(colon + 1, end));
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}
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else {
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mNamespaceID = aUseDefault ? aResolver->lookupNamespace(nsnull) :
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kNameSpaceID_None;
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mLocalName = do_GetAtom(aQName);
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}
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return NS_OK;
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}
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//------------------------------/
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//- Implementation of XMLUtils -/
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//------------------------------/
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// static
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nsresult
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XMLUtils::splitExpatName(const PRUnichar *aExpatName, nsIAtom **aPrefix,
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nsIAtom **aLocalName, PRInt32* aNameSpaceID)
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{
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/**
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* Expat can send the following:
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* localName
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* namespaceURI<separator>localName
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* namespaceURI<separator>localName<separator>prefix
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*
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* and we use 0xFFFF for the <separator>.
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*
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*/
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const PRUnichar *uriEnd = nsnull;
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const PRUnichar *nameEnd = nsnull;
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const PRUnichar *pos;
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for (pos = aExpatName; *pos; ++pos) {
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if (*pos == 0xFFFF) {
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if (uriEnd) {
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nameEnd = pos;
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}
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else {
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uriEnd = pos;
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}
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}
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}
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const PRUnichar *nameStart;
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if (uriEnd) {
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*aNameSpaceID =
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txNamespaceManager::getNamespaceID(nsDependentSubstring(aExpatName,
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uriEnd));
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if (*aNameSpaceID == kNameSpaceID_Unknown) {
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return NS_ERROR_FAILURE;
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}
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nameStart = (uriEnd + 1);
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if (nameEnd) {
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const PRUnichar *prefixStart = nameEnd + 1;
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*aPrefix = NS_NewAtom(NS_ConvertUTF16toUTF8(prefixStart,
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pos - prefixStart));
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if (!*aPrefix) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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}
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else {
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nameEnd = pos;
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*aPrefix = nsnull;
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}
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}
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else {
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*aNameSpaceID = kNameSpaceID_None;
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nameStart = aExpatName;
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nameEnd = pos;
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*aPrefix = nsnull;
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}
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*aLocalName = NS_NewAtom(NS_ConvertUTF16toUTF8(nameStart,
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nameEnd - nameStart));
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return *aLocalName ? NS_OK : NS_ERROR_OUT_OF_MEMORY;
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}
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nsresult
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XMLUtils::splitQName(const nsAString& aName, nsIAtom** aPrefix,
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nsIAtom** aLocalName)
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{
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const nsAFlatString& qName = PromiseFlatString(aName);
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const PRUnichar* colon;
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PRBool valid = XMLUtils::isValidQName(qName, &colon);
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if (!valid) {
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return NS_ERROR_FAILURE;
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}
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if (colon) {
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const PRUnichar *end;
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qName.EndReading(end);
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*aPrefix = NS_NewAtom(Substring(qName.get(), colon));
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*aLocalName = NS_NewAtom(Substring(colon + 1, end));
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}
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else {
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*aPrefix = nsnull;
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*aLocalName = NS_NewAtom(aName);
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}
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return NS_OK;
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}
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const nsDependentSubstring XMLUtils::getLocalPart(const nsAString& src)
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{
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// Anything after ':' is the local part of the name
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PRInt32 idx = src.FindChar(':');
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if (idx == kNotFound) {
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return Substring(src, 0, src.Length());
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}
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NS_ASSERTION(idx > 0, "This QName looks invalid.");
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return Substring(src, idx + 1, src.Length() - (idx + 1));
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}
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/**
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* Returns true if the given string has only whitespace characters
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*/
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PRBool XMLUtils::isWhitespace(const nsAFlatString& aText)
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{
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nsAFlatString::const_char_iterator start, end;
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aText.BeginReading(start);
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aText.EndReading(end);
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for ( ; start != end; ++start) {
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if (!isWhitespace(*start)) {
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return PR_FALSE;
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}
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}
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return PR_TRUE;
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}
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/**
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* Normalizes the value of a XML processing instruction
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**/
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void XMLUtils::normalizePIValue(nsAString& piValue)
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{
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nsAutoString origValue(piValue);
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PRUint32 origLength = origValue.Length();
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PRUint32 conversionLoop = 0;
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PRUnichar prevCh = 0;
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piValue.Truncate();
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while (conversionLoop < origLength) {
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PRUnichar ch = origValue.CharAt(conversionLoop);
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switch (ch) {
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case '>':
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{
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if (prevCh == '?') {
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piValue.Append(PRUnichar(' '));
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}
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break;
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}
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default:
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{
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break;
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}
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}
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piValue.Append(ch);
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prevCh = ch;
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++conversionLoop;
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}
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}
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//static
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MBool XMLUtils::getXMLSpacePreserve(const txXPathNode& aNode)
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{
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nsAutoString value;
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txXPathTreeWalker walker(aNode);
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do {
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if (walker.getAttr(txXMLAtoms::space, kNameSpaceID_XML, value)) {
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if (TX_StringEqualsAtom(value, txXMLAtoms::preserve)) {
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return PR_TRUE;
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}
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if (TX_StringEqualsAtom(value, txXMLAtoms::_default)) {
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return PR_FALSE;
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}
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}
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} while (walker.moveToParent());
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return PR_FALSE;
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}
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