LCOV - code coverage report
Current view: directory - intl/unicharutil/src - nsEntityConverter.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 124 79 63.7 %
Date: 2012-06-02 Functions: 13 11 84.6 %

       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 mozilla.org code.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is
      18                 :  * Netscape Communications Corporation.
      19                 :  * Portions created by the Initial Developer are Copyright (C) 1998
      20                 :  * the Initial Developer. All Rights Reserved.
      21                 :  *
      22                 :  * Contributor(s):
      23                 :  *
      24                 :  * Alternatively, the contents of this file may be used under the terms of
      25                 :  * either of the GNU General Public License Version 2 or later (the "GPL"),
      26                 :  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      27                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      28                 :  * of those above. If you wish to allow use of your version of this file only
      29                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      30                 :  * use your version of this file under the terms of the MPL, indicate your
      31                 :  * decision by deleting the provisions above and replace them with the notice
      32                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      33                 :  * the provisions above, a recipient may use your version of this file under
      34                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      35                 :  *
      36                 :  * ***** END LICENSE BLOCK ***** */
      37                 : 
      38                 : #include "nsEntityConverter.h"
      39                 : #include "nsIProperties.h"
      40                 : #include "nsIServiceManager.h"
      41                 : #include "nsIComponentManager.h"
      42                 : #include "nsReadableUtils.h"
      43                 : #include "nsCRT.h"
      44                 : #include "nsLiteralString.h"
      45                 : #include "nsXPIDLString.h"
      46                 : #include "nsString.h"
      47                 : #include "nsUnicharUtils.h"
      48                 : #include "mozilla/Services.h"
      49                 : 
      50                 : //
      51                 : // implementation methods
      52                 : //
      53               2 : nsEntityConverter::nsEntityConverter()
      54                 : :       mVersionList(NULL),
      55               2 :   mVersionListLength(0)
      56                 : {
      57               2 : }
      58                 : 
      59               4 : nsEntityConverter::~nsEntityConverter()
      60                 : {
      61               2 :   if (NULL != mVersionList) delete [] mVersionList;
      62               8 : }
      63                 : 
      64                 : NS_IMETHODIMP 
      65               2 : nsEntityConverter::LoadVersionPropertyFile()
      66                 : {
      67               4 :     NS_NAMED_LITERAL_CSTRING(url, "resource://gre/res/entityTables/htmlEntityVersions.properties");
      68                 : 
      69                 :     nsCOMPtr<nsIStringBundleService> bundleService =
      70               4 :         mozilla::services::GetStringBundleService();
      71               2 :     if (!bundleService)
      72               0 :         return NS_ERROR_FAILURE;
      73                 :     
      74               4 :     nsCOMPtr<nsIStringBundle> entities;
      75               2 :     nsresult rv = bundleService->CreateBundle(url.get(), getter_AddRefs(entities));
      76               2 :     if (NS_FAILED(rv)) return rv;
      77                 :     
      78                 :     PRInt32     result;
      79                 : 
      80               4 :     nsAutoString key;
      81               4 :     nsXPIDLString value;
      82               4 :     rv = entities->GetStringFromName(NS_LITERAL_STRING("length").get(),
      83               4 :                                      getter_Copies(value));
      84               2 :     NS_ASSERTION(NS_SUCCEEDED(rv),"nsEntityConverter: malformed entity table\n");
      85               2 :     if (NS_FAILED(rv)) return rv;
      86                 :       
      87               2 :     mVersionListLength = nsAutoString(value).ToInteger(&result);
      88               2 :     NS_ASSERTION(32 >= mVersionListLength,"nsEntityConverter: malformed entity table\n");
      89               2 :     if (32 < mVersionListLength) return NS_ERROR_FAILURE;
      90                 :     
      91               4 :     mVersionList = new nsEntityVersionList[mVersionListLength];
      92               2 :     if (!mVersionList) return NS_ERROR_OUT_OF_MEMORY;
      93                 : 
      94              12 :     for (PRUint32 i = 0; i < mVersionListLength && NS_SUCCEEDED(rv); i++) {
      95              10 :         key.SetLength(0);
      96              10 :         key.AppendInt(i+1, 10);
      97              10 :         rv = entities->GetStringFromName(key.get(), getter_Copies(value));
      98              10 :         PRUint32 len = value.Length();
      99              10 :         if (kVERSION_STRING_LEN < len) return NS_ERROR_UNEXPECTED;
     100                 :         
     101              10 :         memcpy(mVersionList[i].mEntityListName, value.get(), len*sizeof(PRUnichar));
     102              10 :         mVersionList[i].mEntityListName[len] = 0;
     103              10 :         mVersionList[i].mVersion = (1 << i);
     104                 :     }
     105                 : 
     106               2 :     return NS_OK;
     107                 : }
     108                 : 
     109                 : already_AddRefed<nsIStringBundle>
     110               2 : nsEntityConverter::LoadEntityBundle(PRUint32 version)
     111                 : {
     112               4 :   nsCAutoString url(NS_LITERAL_CSTRING("resource://gre/res/entityTables/"));
     113               2 :   const PRUnichar *versionName = NULL;
     114                 :   nsresult rv;
     115                 : 
     116                 :   nsCOMPtr<nsIStringBundleService> bundleService =
     117               4 :       do_GetService(NS_STRINGBUNDLE_CONTRACTID, &rv);
     118               2 :   if (NS_FAILED(rv)) return NULL;
     119                 :   
     120               2 :   versionName = GetVersionName(version);
     121               2 :   if (NULL == versionName) return NULL;
     122                 : 
     123                 :   // all property file names are ASCII, like "html40Latin1" so this is safe
     124               2 :   LossyAppendUTF16toASCII(versionName, url);
     125               2 :   url.Append(".properties");
     126                 : 
     127                 :   nsIStringBundle* bundle;
     128               2 :   rv = bundleService->CreateBundle(url.get(), &bundle);
     129               2 :   if (NS_FAILED(rv)) return NULL;
     130                 :   
     131                 :   // does this addref right?
     132               2 :   return bundle;
     133                 : }
     134                 : 
     135                 : const PRUnichar*
     136               2 : nsEntityConverter:: GetVersionName(PRUint32 versionNumber)
     137                 : {
     138               8 :   for (PRUint32 i = 0; i < mVersionListLength; i++) {
     139               8 :     if (versionNumber == mVersionList[i].mVersion)
     140               2 :       return mVersionList[i].mEntityListName;
     141                 :   }
     142                 : 
     143               0 :   return NULL;
     144                 : }
     145                 : 
     146                 : nsIStringBundle*
     147              36 : nsEntityConverter:: GetVersionBundleInstance(PRUint32 versionNumber)
     148                 : {
     149              36 :   if (NULL == mVersionList) {
     150                 :     // load the property file which contains available version names
     151                 :     // and generate a list of version/name pair
     152               2 :     nsresult rv = LoadVersionPropertyFile();
     153               2 :     if (NS_FAILED(rv)) return NULL;
     154                 :   }
     155                 : 
     156                 :   PRUint32 i;
     157             144 :   for (i = 0; i < mVersionListLength; i++) {
     158             144 :     if (versionNumber == mVersionList[i].mVersion) {
     159              36 :       if (!mVersionList[i].mEntities)
     160                 :       { // not loaded
     161                 :         // load the property file
     162               2 :         mVersionList[i].mEntities = LoadEntityBundle(versionNumber);
     163               2 :         NS_ASSERTION(mVersionList[i].mEntities, "LoadEntityBundle failed");
     164                 :       }
     165              36 :       return mVersionList[i].mEntities.get();
     166                 :     }
     167                 :   }
     168                 : 
     169               0 :   return NULL;
     170                 : }
     171                 : 
     172                 : 
     173                 : //
     174                 : // nsISupports methods
     175                 : //
     176              16 : NS_IMPL_ISUPPORTS1(nsEntityConverter,nsIEntityConverter)
     177                 : 
     178                 : 
     179                 : //
     180                 : // nsIEntityConverter
     181                 : //
     182                 : NS_IMETHODIMP
     183               0 : nsEntityConverter::ConvertToEntity(PRUnichar character, PRUint32 entityVersion, char **_retval)
     184                 : { 
     185               0 :   return ConvertUTF32ToEntity((PRUint32)character, entityVersion, _retval);
     186                 : }
     187                 : 
     188                 : NS_IMETHODIMP
     189              36 : nsEntityConverter::ConvertUTF32ToEntity(PRUint32 character, PRUint32 entityVersion, char **_retval)
     190                 : {
     191              36 :   NS_ASSERTION(_retval, "null ptr- _retval");
     192              36 :   if(nsnull == _retval)
     193               0 :     return NS_ERROR_NULL_POINTER;
     194              36 :   *_retval = NULL;
     195                 : 
     196             144 :   for (PRUint32 mask = 1, mask2 = 0xFFFFFFFFL; (0!=(entityVersion & mask2)); mask<<=1, mask2<<=1) {
     197             144 :     if (0 == (entityVersion & mask)) 
     198             108 :       continue;
     199              36 :     nsIStringBundle* entities = GetVersionBundleInstance(entityVersion & mask);
     200              36 :     NS_ASSERTION(entities, "Cannot get the property file");
     201                 : 
     202              36 :     if (NULL == entities) 
     203               0 :       continue;
     204                 : 
     205              72 :     nsAutoString key(NS_LITERAL_STRING("entity."));
     206              36 :     key.AppendInt(character,10);
     207                 : 
     208              72 :     nsXPIDLString value;
     209              36 :     nsresult rv = entities->GetStringFromName(key.get(), getter_Copies(value));
     210              36 :     if (NS_SUCCEEDED(rv)) {
     211              36 :       *_retval = ToNewCString(value);
     212              36 :       if(nsnull == *_retval)
     213               0 :         return NS_ERROR_OUT_OF_MEMORY;
     214                 :       else
     215              36 :         return NS_OK;
     216                 :     }
     217                 :   }
     218               0 :         return NS_ERROR_ILLEGAL_VALUE;
     219                 : }
     220                 : 
     221                 : NS_IMETHODIMP
     222               0 : nsEntityConverter::ConvertToEntities(const PRUnichar *inString, PRUint32 entityVersion, PRUnichar **_retval)
     223                 : {
     224               0 :   NS_ASSERTION(inString, "null ptr- inString");
     225               0 :   NS_ASSERTION(_retval, "null ptr- _retval");
     226               0 :   if((nsnull == inString) || (nsnull == _retval))
     227               0 :     return NS_ERROR_NULL_POINTER;
     228               0 :   *_retval = NULL;
     229                 : 
     230               0 :   const PRUnichar *entity = NULL;
     231               0 :   nsString outString;
     232                 : 
     233                 :   // per character look for the entity
     234               0 :   PRUint32 len = nsCRT::strlen(inString);
     235               0 :   for (PRUint32 i = 0; i < len; i++) {
     236               0 :     nsAutoString key(NS_LITERAL_STRING("entity."));
     237               0 :     if (NS_IS_HIGH_SURROGATE(inString[i]) &&
     238                 :         i + 2 < len &&
     239               0 :         NS_IS_LOW_SURROGATE(inString[i + 1])) {
     240               0 :       key.AppendInt(SURROGATE_TO_UCS4(inString[i], inString[i+1]), 10);
     241               0 :       ++i;
     242                 :     }
     243                 :     else {
     244               0 :       key.AppendInt(inString[i],10);
     245                 :     }
     246                 :     
     247               0 :     nsXPIDLString value;
     248                 :     
     249               0 :     entity = NULL;
     250               0 :     for (PRUint32 mask = 1, mask2 = 0xFFFFFFFFL; (0!=(entityVersion & mask2)); mask<<=1, mask2<<=1) {
     251               0 :       if (0 == (entityVersion & mask)) 
     252               0 :          continue;
     253               0 :       nsIStringBundle* entities = GetVersionBundleInstance(entityVersion & mask);
     254               0 :       NS_ASSERTION(entities, "Cannot get the property file");
     255                 : 
     256               0 :       if (NULL == entities) 
     257               0 :           continue;
     258                 : 
     259                 :       nsresult rv = entities->GetStringFromName(key.get(),
     260               0 :                                                 getter_Copies(value));
     261               0 :       if (NS_SUCCEEDED(rv)) {
     262               0 :         entity = value.get();
     263               0 :         break;
     264                 :       }
     265                 :     }
     266               0 :     if (NULL != entity) {
     267               0 :       outString.Append(entity);
     268                 :     }
     269                 :     else {
     270               0 :       outString.Append(&inString[i], 1);
     271                 :     }
     272                 :   }
     273                 : 
     274               0 :   *_retval = ToNewUnicode(outString);
     275               0 :   if (NULL == *_retval) 
     276               0 :     return NS_ERROR_OUT_OF_MEMORY;
     277                 : 
     278               0 :   return NS_OK;
     279                 : }

Generated by: LCOV version 1.7