LCOV - code coverage report
Current view: directory - content/xslt/src/xml - txXMLUtils.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 94 0 0.0 %
Date: 2012-06-02 Functions: 7 0 0.0 %

       1                 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2                 : /* ***** BEGIN LICENSE BLOCK *****
       3                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       4                 :  *
       5                 :  * The contents of this file are subject to the Mozilla Public License Version
       6                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       7                 :  * the License. You may obtain a copy of the License at
       8                 :  * http://www.mozilla.org/MPL/
       9                 :  *
      10                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      11                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      12                 :  * for the specific language governing rights and limitations under the
      13                 :  * License.
      14                 :  *
      15                 :  * The Original Code is TransforMiiX XSLT processor code.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is
      18                 :  * The MITRE Corporation.
      19                 :  * Portions created by the Initial Developer are Copyright (C) 1999
      20                 :  * the Initial Developer. All Rights Reserved.
      21                 :  *
      22                 :  * Contributor(s):
      23                 :  *   Keith Visco <kvisco@ziplink.net> (Original Author)
      24                 :  *   Lidong <lidong520@263.net>
      25                 :  *
      26                 :  * Alternatively, the contents of this file may be used under the terms of
      27                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
      28                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      29                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      30                 :  * of those above. If you wish to allow use of your version of this file only
      31                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      32                 :  * use your version of this file under the terms of the MPL, indicate your
      33                 :  * decision by deleting the provisions above and replace them with the notice
      34                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      35                 :  * the provisions above, a recipient may use your version of this file under
      36                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      37                 :  *
      38                 :  * ***** END LICENSE BLOCK ***** */
      39                 : 
      40                 : /*
      41                 :  * XML utility classes
      42                 :  */
      43                 : 
      44                 : #include "txXMLUtils.h"
      45                 : #include "nsString.h"
      46                 : #include "nsReadableUtils.h"
      47                 : #include "nsGkAtoms.h"
      48                 : #include "txStringUtils.h"
      49                 : #include "txNamespaceMap.h"
      50                 : #include "txXPathTreeWalker.h"
      51                 : 
      52                 : nsresult
      53               0 : txExpandedName::init(const nsAString& aQName, txNamespaceMap* aResolver,
      54                 :                      bool aUseDefault)
      55                 : {
      56               0 :     const nsAFlatString& qName = PromiseFlatString(aQName);
      57                 :     const PRUnichar* colon;
      58               0 :     bool valid = XMLUtils::isValidQName(qName, &colon);
      59               0 :     if (!valid) {
      60               0 :         return NS_ERROR_FAILURE;
      61                 :     }
      62                 : 
      63               0 :     if (colon) {
      64               0 :         nsCOMPtr<nsIAtom> prefix = do_GetAtom(Substring(qName.get(), colon));
      65               0 :         PRInt32 namespaceID = aResolver->lookupNamespace(prefix);
      66               0 :         if (namespaceID == kNameSpaceID_Unknown)
      67               0 :             return NS_ERROR_FAILURE;
      68               0 :         mNamespaceID = namespaceID;
      69                 : 
      70                 :         const PRUnichar *end;
      71               0 :         qName.EndReading(end);
      72               0 :         mLocalName = do_GetAtom(Substring(colon + 1, end));
      73                 :     }
      74                 :     else {
      75                 :         mNamespaceID = aUseDefault ? aResolver->lookupNamespace(nsnull) :
      76               0 :                                      kNameSpaceID_None;
      77               0 :         mLocalName = do_GetAtom(aQName);
      78                 :     }
      79               0 :     return NS_OK;
      80                 : }
      81                 : 
      82                 :   //------------------------------/
      83                 :  //- Implementation of XMLUtils -/
      84                 : //------------------------------/
      85                 : 
      86                 : // static
      87                 : nsresult
      88               0 : XMLUtils::splitExpatName(const PRUnichar *aExpatName, nsIAtom **aPrefix,
      89                 :                          nsIAtom **aLocalName, PRInt32* aNameSpaceID)
      90                 : {
      91                 :     /**
      92                 :      *  Expat can send the following:
      93                 :      *    localName
      94                 :      *    namespaceURI<separator>localName
      95                 :      *    namespaceURI<separator>localName<separator>prefix
      96                 :      */
      97                 : 
      98               0 :     const PRUnichar *uriEnd = nsnull;
      99               0 :     const PRUnichar *nameEnd = nsnull;
     100                 :     const PRUnichar *pos;
     101               0 :     for (pos = aExpatName; *pos; ++pos) {
     102               0 :         if (*pos == kExpatSeparatorChar) {
     103               0 :             if (uriEnd) {
     104               0 :                 nameEnd = pos;
     105                 :             }
     106                 :             else {
     107               0 :                 uriEnd = pos;
     108                 :             }
     109                 :         }
     110                 :     }
     111                 : 
     112                 :     const PRUnichar *nameStart;
     113               0 :     if (uriEnd) {
     114                 :         *aNameSpaceID =
     115                 :             txNamespaceManager::getNamespaceID(nsDependentSubstring(aExpatName,
     116               0 :                                                                     uriEnd));
     117               0 :         if (*aNameSpaceID == kNameSpaceID_Unknown) {
     118               0 :             return NS_ERROR_FAILURE;
     119                 :         }
     120                 : 
     121               0 :         nameStart = (uriEnd + 1);
     122               0 :         if (nameEnd)  {
     123               0 :             const PRUnichar *prefixStart = nameEnd + 1;
     124               0 :             *aPrefix = NS_NewAtom(Substring(prefixStart, pos));
     125               0 :             if (!*aPrefix) {
     126               0 :                 return NS_ERROR_OUT_OF_MEMORY;
     127                 :             }
     128                 :         }
     129                 :         else {
     130               0 :             nameEnd = pos;
     131               0 :             *aPrefix = nsnull;
     132                 :         }
     133                 :     }
     134                 :     else {
     135               0 :         *aNameSpaceID = kNameSpaceID_None;
     136               0 :         nameStart = aExpatName;
     137               0 :         nameEnd = pos;
     138               0 :         *aPrefix = nsnull;
     139                 :     }
     140                 : 
     141               0 :     *aLocalName = NS_NewAtom(Substring(nameStart, nameEnd));
     142                 : 
     143               0 :     return *aLocalName ? NS_OK : NS_ERROR_OUT_OF_MEMORY;
     144                 : }
     145                 : 
     146                 : nsresult
     147               0 : XMLUtils::splitQName(const nsAString& aName, nsIAtom** aPrefix,
     148                 :                      nsIAtom** aLocalName)
     149                 : {
     150               0 :     const nsAFlatString& qName = PromiseFlatString(aName);
     151                 :     const PRUnichar* colon;
     152               0 :     bool valid = XMLUtils::isValidQName(qName, &colon);
     153               0 :     if (!valid) {
     154               0 :         return NS_ERROR_FAILURE;
     155                 :     }
     156                 : 
     157               0 :     if (colon) {
     158                 :         const PRUnichar *end;
     159               0 :         qName.EndReading(end);
     160                 : 
     161               0 :         *aPrefix = NS_NewAtom(Substring(qName.get(), colon));
     162               0 :         *aLocalName = NS_NewAtom(Substring(colon + 1, end));
     163                 :     }
     164                 :     else {
     165               0 :         *aPrefix = nsnull;
     166               0 :         *aLocalName = NS_NewAtom(aName);
     167                 :     }
     168                 : 
     169               0 :     return NS_OK;
     170                 : }
     171                 : 
     172               0 : const nsDependentSubstring XMLUtils::getLocalPart(const nsAString& src)
     173                 : {
     174                 :     // Anything after ':' is the local part of the name
     175               0 :     PRInt32 idx = src.FindChar(':');
     176               0 :     if (idx == kNotFound) {
     177               0 :         return Substring(src, 0, src.Length());
     178                 :     }
     179                 : 
     180               0 :     NS_ASSERTION(idx > 0, "This QName looks invalid.");
     181               0 :     return Substring(src, idx + 1, src.Length() - (idx + 1));
     182                 : }
     183                 : 
     184                 : /**
     185                 :  * Returns true if the given string has only whitespace characters
     186                 :  */
     187               0 : bool XMLUtils::isWhitespace(const nsAFlatString& aText)
     188                 : {
     189                 :     nsAFlatString::const_char_iterator start, end;
     190               0 :     aText.BeginReading(start);
     191               0 :     aText.EndReading(end);
     192               0 :     for ( ; start != end; ++start) {
     193               0 :         if (!isWhitespace(*start)) {
     194               0 :             return false;
     195                 :         }
     196                 :     }
     197               0 :     return true;
     198                 : }
     199                 : 
     200                 : /**
     201                 :  * Normalizes the value of a XML processing instruction
     202                 : **/
     203               0 : void XMLUtils::normalizePIValue(nsAString& piValue)
     204                 : {
     205               0 :     nsAutoString origValue(piValue);
     206               0 :     PRUint32 origLength = origValue.Length();
     207               0 :     PRUint32 conversionLoop = 0;
     208               0 :     PRUnichar prevCh = 0;
     209               0 :     piValue.Truncate();
     210                 : 
     211               0 :     while (conversionLoop < origLength) {
     212               0 :         PRUnichar ch = origValue.CharAt(conversionLoop);
     213               0 :         switch (ch) {
     214                 :             case '>':
     215                 :             {
     216               0 :                 if (prevCh == '?') {
     217               0 :                     piValue.Append(PRUnichar(' '));
     218                 :                 }
     219               0 :                 break;
     220                 :             }
     221                 :             default:
     222                 :             {
     223               0 :                 break;
     224                 :             }
     225                 :         }
     226               0 :         piValue.Append(ch);
     227               0 :         prevCh = ch;
     228               0 :         ++conversionLoop;
     229                 :     }
     230               0 : }
     231                 : 
     232                 : //static
     233               0 : bool XMLUtils::getXMLSpacePreserve(const txXPathNode& aNode)
     234                 : {
     235               0 :     nsAutoString value;
     236               0 :     txXPathTreeWalker walker(aNode);
     237               0 :     do {
     238               0 :         if (walker.getAttr(nsGkAtoms::space, kNameSpaceID_XML, value)) {
     239               0 :             if (TX_StringEqualsAtom(value, nsGkAtoms::preserve)) {
     240               0 :                 return true;
     241                 :             }
     242               0 :             if (TX_StringEqualsAtom(value, nsGkAtoms::_default)) {
     243               0 :                 return false;
     244                 :             }
     245                 :         }
     246                 :     } while (walker.moveToParent());
     247                 : 
     248               0 :     return false;
     249                 : }

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