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# kcharsets.cpp

    00001 /* This file is part of the KDE libraries
    00002     Copyright (C) 1999 Lars Knoll (knoll@kde.org)
    00003
    00004     This library is free software; you can redistribute it and/or
    00005     modify it under the terms of the GNU Library General Public
    00006     License as published by the Free Software Foundation; either
    00007     version 2 of the License, or (at your option) any later version.
    00008
    00009     This library is distributed in the hope that it will be useful,
    00010     but WITHOUT ANY WARRANTY; without even the implied warranty of
    00011     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    00012     Library General Public License for more details.
    00013
    00014     You should have received a copy of the GNU Library General Public License
    00015     along with this library; see the file COPYING.LIB.  If not, write to
    00016     the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    00017     Boston, MA 02111-1307, USA.
    00018 */
    00019 #include "kcharsets.h"
    00020
    00021 #include "kentities.c"
    00022
    00023 #include <kapplication.h>
    00024 #include <kglobal.h>
    00025 #include <klocale.h>
    00026 #include <kconfig.h>
    00027
    00028 #include <qfontinfo.h>
    00029 #include <qstrlist.h>
    00030 #include <qfontdatabase.h>
    00031 #include <kdebug.h>
    00032
    00033 #include <qtextcodec.h>
    00034 #include <qmap.h>
    00035 #include <qcstring.h>
    00036
    00037 #include <assert.h>
    00038
    00039 #define CHARSETS_COUNT 33
    00040
    00041 static const char * const language_names[] = {
    00042     I18N_NOOP( "Other" ),
    00043     I18N_NOOP( "Arabic" ),
    00044     I18N_NOOP( "Baltic" ),
    00045     I18N_NOOP( "Central European" ),
    00046     I18N_NOOP( "Chinese Simplified" ),
    00047     I18N_NOOP( "Chinese Traditional" ),
    00048     I18N_NOOP( "Cyrillic" ),
    00049     I18N_NOOP( "Greek" ),
    00050     I18N_NOOP( "Hebrew" ),
    00051     I18N_NOOP( "Japanese" ),
    00052     I18N_NOOP( "Korean" ),
    00053     I18N_NOOP( "Thai" ),
    00054     I18N_NOOP( "Turkish" ),
    00055     I18N_NOOP( "Western European" ),
    00056     I18N_NOOP( "Tamil" ),
    00057     I18N_NOOP( "Unicode" ),
    00058     I18N_NOOP( "Northern Saami" )
    00059 };
    00060
    00061 // this list gives the charsets that can be used to display a file given in a certain encoding.
    00062 // the list should be in order of preference
    00063 // left side is the name returned by the codec used, right side the name of the charset as
    00064 // used in kcharsets.cpp
    00065 // 'unicode' will always be chosen as last resort, so it only needs to be added to the list,
    00066 // if it should get a higher priority
    00067 // every line must end with 0
    00068
    00069 static const char* const charsets_for_encoding[] = {
    00070     "koi8-r",                "koi8-r","cp 1251","koi8-u","iso-8859-5", 0,
    00071     "koi8-u",                "koi8-u","cp 1251","iso-8859-5","koi8-r", 0,
    00072     "iso 8859-1",            "iso8859-1","iso8859-15", 0,
    00073     "iso 8859-2",            "iso8859-2","unicode","iso8859-1", 0,
    00074     "iso 8859-3",            "iso8859-3","unicode","iso8859-1", 0,
    00075     "iso 8859-4",            "iso8859-4","unicode","iso8859-13", "iso8859-1", 0,
    00076     "iso 8859-5",            "iso8859-5","koi8-u","koi8-r", 0,
    00077     "iso 8859-6",            "unicode","iso8859-6", 0,
    00078     "iso 8859-7",            "iso8859-7", 0,
    00079     "iso 8859-8",            "iso8859-8", 0,
    00080     "iso 8859-8-i",          "iso8859-8", 0,
    00081     "iso 8859-9",            "iso8859-9","unicode","iso8859-1", 0,
    00082     "iso 8859-11",           "iso8859-11", 0,
    00083     "iso 8859-13",           "iso8859-13","unicode","iso8859-4", "iso8859-1", 0,
    00084     "iso 8859-15",           "iso8859-15","unicode","iso8859-1", 0,
    00085     "utf8",                  "unicode","iso8859-1", 0,
    00086     "utf16",                 "unicode","iso8859-1", 0,
    00087     "iso-10646-ucs-2",       "unicode","iso8859-1", 0,
    00088     "cp 1250",               "iso8859-2", 0,
    00089     "cp 1251",               "cp 1251","koi8-u","koi8-r","iso8859-5", 0,
    00090     "cp 1252",               "iso8859-1", 0,
    00091     "cp 1253",               "iso8859-7", 0,
    00092     "cp 1254",               "iso8859-9", 0,
    00093     "cp 1255",               "iso8859-8", 0,
    00094     "cp 1256",               "unicode","iso8859-6", 0,
    00095     "cp 1257",               "iso8859-13", "iso8859-4", 0,
    00096     "ibm850",                "ibm850","unicode","iso8859-1", 0,
    00097     "ibm852",                "unicode","iso-8859-2", 0,
    00098     "ibm866",                "ibm866","cp 1251","koi8-u","koi8-r","iso8859-5", 0,
    00099     "tis620",                "iso8859-11", 0,
    00100     "eucjp",                 "eucjp","unicode","iso8859-1", 0,
    00101     "sjis",                  "eucjp","unicode","iso8859-1", 0,
    00102     "jis7",                  "eucjp","unicode","iso8859-1", 0,
    00103     "big5",                  "big5","unicode","iso8859-1", 0,
    00104     "gbk",                   "gb2312.1980-0","gbk-0","unicode","iso8859-1", 0,
    00105     "gb18030",               "gb18030.2000-1", "gb18030.2000-0", "unicode", "gbk-0", "gb2313.1980-0", "iso8859-1", 0,
    00106     "gb2312",                "gb2312.1980-0","unicode","iso8859-1", 0,
    00107     "euckr",                 "euckr","unicode","iso8859-1", 0,
    00108     "tscii",                 "tscii", 0,
    00109     "pt 154",                "pt 154","cp 1251","koi8-u","koi8-r","iso8859-5", 0,
    00110     "winsami2",              "winsami2", "cp1252", "unicode", 0,
    00111     0 }; // extra 0 for end
    00112
    00113 // 0 other
    00114 // 1 Arabic
    00115 // 2 Baltic
    00116 // 3 Central European
    00117 // 4 Chinese Simplified
    00118 // 5 Chinese Traditional
    00119 // 6 Cyrillic
    00120 // 7 Greek
    00121 // 8 Hebrew
    00122 // 9 Japanese
    00123 // 10 Korean
    00124 // 11 Thai
    00125 // 12 Turkish
    00126 // 13 Western European
    00127 // 14 Tamil
    00128 // 15 Unicode
    00129 // 16 Northern Sami
    00130 // ### FIXME KDE4: the name of the encodings should mostly be uppercase
    00131 static struct LanguageForEncoding
    00132     {
    00133     const char* index;
    00134     int data;
    00135     } const language_for_encoding[] = {
    00136     { "iso 8859-1", 13 },
    00137     { "iso 8859-15", 13 },
    00138     { "cp 1252", 13 },
    00139     { "ibm850", 13 },
    00140     { "iso 8859-2", 3 },
    00141     { "iso 8859-3", 3 },
    00142     { "iso 8859-4", 2 },
    00143     { "iso 8859-13", 2 },
    00144     { "cp 1250", 3 },
    00145     { "cp 1254", 12 },
    00146     { "cp 1257", 2 },
    00147     { "ibm852", 3 },
    00148     { "koi8-r", 6 },
    00149     { "iso 8859-5", 6 },
    00150     { "cp 1251", 6 },
    00151     { "koi8-u", 6 },
    00152     { "pt 154", 6 },
    00153     { "ibm866", 6 },
    00154     { "big5", 5 },
    00155     { "gb18030", 4 },
    00156     { "gbk", 4 },
    00157     { "gb2312", 4 },
    00158     { "euckr", 10 },
    00159     { "sjis", 9 },
    00160     { "jis7", 9 },
    00161     { "eucjp", 9 },
    00162     { "iso 8859-7", 7 },
    00163     { "cp 1253", 7 },
    00164     { "iso 8859-6", 1 },
    00165     { "cp 1256", 1 },
    00166     { "iso 8859-8", 8 },
    00167     { "iso 8859-8-i", 8 },
    00168     { "cp 1255", 8 },
    00169     { "iso 8859-9", 12 },
    00170     { "tis620", 11 },
    00171     { "iso 8859-11", 11 },
    00172     { "utf8", 15 },
    00173     { "utf16", 15 },
    00174     { "utf7", 15 }, // ### FIXME: UTF-7 is not in Qt
    00175     { "ucs2", 15 },
    00176     { "iso-10646-ucs-2", 15 },
    00177     { "winsami2", 16},
    00178     { 0, 0 } };
    00179
    00180 // defines some different names for codecs that are built into Qt.
    00181 static struct Builtin
    00182     {
    00183     const char* index;
    00184     const char* data;
    00185     } const builtin[] = {
    00186     { "iso-ir-111", "koi8-r" },
    00187     { "koi8-ru", "koi8-u" },
    00188     { "koi8r", "koi8-r" },
    00189     { "koi8u", "koi8-u" },
    00190     { "koi unified", "koi8-r" },
    00191     { "us-ascii", "iso 8859-1" },
    00192     { "usascii", "iso 8859-1" },
    00193     { "x-utf-8", "utf-8" },
    00194     { "x-utf-7", "utf-7" }, // ### FIXME: UTF-7 is not in Qt
    00195     { "unicode-1-1-utf-7", "utf-7" }, // ### FIXME: UTF-7 is not in Qt
    00196     { "utf-16", "iso-10646-ucs-2" },
    00197     { "utf16", "iso-10646-ucs-2" },
    00198     { "ucs2", "iso-10646-ucs-2" },
    00199     { "iso10646-1", "iso-10646-ucs-2" },
    00200     { "gb18030.2000-1", "gb18030" },
    00201     { "gb18030.2000-0", "gb18030" },
    00202     { "gbk-0", "gbk" },
    00203     { "gb2312", "gbk" },
    00204     { "gb2312.1980-0", "gbk" },
    00205     { "big5-0", "big5" },
    00206     { "euc-kr", "euckr" },
    00207     { "x-euc-kr", "euckr" },
    00208     { "euc-jp", "eucjp" },
    00209     { "x-euc-jp", "eucjp" },
    00210     { "jisx0201.1976-0", "eucjp" },
    00211     { "jisx0208.1983-0", "eucjp" },
    00212     { "jisx0208.1990-0", "eucjp" },
    00213     { "jisx0208.1997-0", "eucjp" },
    00214     { "jisx0212.1990-0", "eucjp" },
    00215     { "jisx0213.2000-1", "eucjp" },
    00216     { "jisx0213.2000-2", "eucjp" },
    00217     { "shift_jis", "sjis" },
    00218     { "shift-jis", "sjis" },
    00219     { "x-sjis", "sjis" },
    00220     { "iso-2022-jp", "jis7" },
    00221     { "windows850", "ibm850" },
    00222     { "windows866", "ibm866" },
    00223     { "windows1251", "cp 1251" },
    00224     { "windows1252", "cp 1252" },
    00225     { "windows1253", "cp 1253" },
    00226     { "windows1254", "cp 1254" },
    00227     { "windows1255", "cp 1255" },
    00228     { "windows1256", "cp 1256" },
    00229     { "windows1257", "cp 1257" },
    00230     { "windows-850", "ibm850" },
    00231     { "windows-866", "ibm866" },
    00232     { "windows-1250", "cp 1250" },
    00233     { "windows-1251", "cp 1251" },
    00234     { "windows-1252", "cp 1252" },
    00235     { "windows-1253", "cp 1253" },
    00236     { "windows-1254", "cp 1254" },
    00237     { "windows-1255", "cp 1255" },
    00238     { "windows-1256", "cp 1256" },
    00239     { "windows-1257", "cp 1257" },
    00240     { "x-windows-850", "ibm850" },
    00241     { "x-windows-866", "ibm866" },
    00242     { "x-windows-1250", "cp 1250" },
    00243     { "x-windows-1251", "cp 1251" },
    00244     { "x-windows-1252", "cp 1252" },
    00245     { "x-windows-1253", "cp 1253" },
    00246     { "x-windows-1254", "cp 1254" },
    00247     { "x-windows-1255", "cp 1255" },
    00248     { "x-windows-1256", "cp 1256" },
    00249     { "x-windows-1257", "cp 1257" },
    00250     { "cp850", "ibm850" },
    00251     { "cp866", "ibm866" },
    00252     { "cp-850", "ibm850" },
    00253     { "cp-866", "ibm866" },
    00254     { "cp-1250", "cp 1250" },
    00255     { "cp-1251", "cp 1251" },
    00256     { "cp-1252", "cp 1252" },
    00257     { "cp-1253", "cp 1253" },
    00258     { "cp-1254", "cp 1254" },
    00259     { "cp-1255", "cp 1255" },
    00260     { "cp-1256", "cp 1256" },
    00261     { "cp-1257", "cp 1257" },
    00262     { "cp-10000", "apple roman" },
    00263     { "x-cp-850", "ibm850" },
    00264     { "x-cp-866", "ibm866" },
    00265     { "x-cp-1250", "cp 1250" },
    00266     { "x-cp-1251", "cp 1251" },
    00267     { "x-cp-1252", "cp 1252" },
    00268     { "x-cp-1253", "cp 1253" },
    00269     { "x-cp-1254", "cp 1254" },
    00270     { "x-cp-1255", "cp 1255" },
    00271     { "x-cp-1256", "cp 1256" },
    00272     { "x-cp-1257", "cp 1257" },
    00273     { "x-cp-10000", "apple roman" },
    00274     { "tis620", "iso 8859-11" },
    00275     { "tis-620", "iso 8859-11" },
    00276     { "thai-tis620", "iso 8859-11" },
    00277     { "windows-874", "iso 8859-11" },
    00278     { "windows874", "iso 8859-11" },
    00279     { "x-windows-874", "iso 8859-11" },
    00280     { "cp874", "iso 8859-11" },
    00281     { "cp-874", "iso 8859-11" },
    00282     { "x-cp-874", "iso 8859-11" },
    00283     { "ksc5601.1987-0", "euckr" },
    00284     { "ks_c_5601-1987", "euckr" },
    00285     { "iso-8859-1", "iso 8859-1" },
    00286     { "iso-8859-2", "iso 8859-2" },
    00287     { "iso-8859-3", "iso 8859-3" },
    00288     { "iso-8859-4", "iso 8859-4" },
    00289     { "iso-8859-5", "iso 8859-5" },
    00290     { "iso-8859-6", "iso 8859-6" },
    00291     { "iso-8859-7", "iso 8859-7" },
    00292     { "iso-8859-8", "iso 8859-8" },
    00293     { "iso-8859-9", "iso 8859-9" },
    00294     { "iso-8859-10", "iso 8859-10" },
    00295     { "iso-8859-11", "iso 8859-11" },
    00296     { "iso-8859-12", "iso 8859-12" },
    00297     { "iso-8859-13", "iso 8859-13" },
    00298     { "iso-8859-14", "iso 8859-14" },
    00299     { "iso-8859-15", "iso 8859-15" },
    00300     { "tscii", "tscii" },
    00301     { "paratype-154", "pt 154" },
    00302     { "pt-154", "pt 154" },
    00303     { "x-winsami2", "winsami2" },
    00304     { "x-mac-roman", "apple roman" },
    00305     { "macintosh", "apple roman" },
    00306     { "mac", "apple roman" },
    00307     { 0, 0 }};
    00308
    00309 // some different names for the encodings defined in the charmaps files.
    00310 // even though the charmap file names are all uppercase, the names are all lowercase here.
    00311 static struct Aliases
    00312     {
    00313     const char* index;
    00314     const char* data;
    00315     } const aliases[] = {
    00316     { "cp852", "ibm852" },
    00317     { "cp-852", "ibm852" },
    00318     { "x-cp-852", "ibm852" },
    00319     { "windows852", "ibm852" },
    00320     { "windows-852", "ibm852" },
    00321     { "x-windows-852", "ibm852" },
    00322     { 0, 0 }};
    00323
    00324 // some last resort hints in case the charmap file couldn't be found. This gives at least a partial conversion
    00325 // and helps making things readable.
    00326 // the name used as input here is already converted to the more canonical name as defined in the aliases array.
    00327 static struct ConversionHints
    00328     {
    00329     const char* index;
    00330     const char* data;
    00331     } const conversion_hints[] = {
    00332     { "cp1250", "iso-8859-2" },
    00333     { "koi8-r", "iso-8859-5" },
    00334     { "koi8-u", "koi8-r" },
    00335     { 0, 0 }};
    00336
    00337
    00338 // search an array of items index/data, index is const char*, data is T, find first matching index
    00339 // and return data, or return 0
    00340 template< typename T, typename Data >
    00341 static Data kcharsets_array_search( const T* start, const char* entry )
    00342 {
    00343     for( const T* pos = start;
    00344          pos->index != 0;
    00345          ++pos )
    00346         if( qstrcmp( pos->index, entry ) == 0 )
    00347             return pos->data;
    00348     return 0;
    00349 }
    00350
    00351
    00352 class KCharsetsPrivate
    00353 {
    00354 public:
    00355     KCharsetsPrivate(KCharsets* _kc)
    00356         : codecForNameDict(43, false) // case insensitive
    00357     {
    00358         db = 0;
    00359         kc = _kc;
    00360     }
    00361     ~KCharsetsPrivate()
    00362     {
    00363         delete db;
    00364     }
    00365     QFontDatabase *db;
    00366     QAsciiDict<QTextCodec> codecForNameDict;
    00367     KCharsets* kc;
    00368 };
    00369
    00370 // --------------------------------------------------------------------------
    00371
    00372 KCharsets::KCharsets()
    00373 {
    00374     d = new KCharsetsPrivate(this);
    00375 }
    00376
    00377 KCharsets::~KCharsets()
    00378 {
    00379     delete d;
    00380 }
    00381
    00382 QChar KCharsets::fromEntity(const QString &str)
    00383 {
    00384     QChar res = QChar::null;
    00385
    00386     int pos = 0;
    00387     if(str[pos] == '&') pos++;
    00388
    00389     // Check for '&#000' or '&#x0000' sequence
    00390     if (str[pos] == '#' && str.length()-pos > 1) {
    00391         bool ok;
    00392         pos++;
    00393         if (str[pos] == 'x' || str[pos] == 'X') {
    00394             pos++;
    00395             // '&#x0000', hexadeciaml character reference
    00396             QString tmp(str.unicode()+pos, str.length()-pos);
    00397             res = tmp.toInt(&ok, 16);
    00398         } else {
    00399             //  '&#0000', deciaml character reference
    00400             QString tmp(str.unicode()+pos, str.length()-pos);
    00401             res = tmp.toInt(&ok, 10);
    00402         }
    00403         return res;
    00404     }
    00405
    00406     const entity *e = kde_findEntity(str.ascii(), str.length());
    00407
    00408     if(!e)
    00409     {
    00410         //kdDebug( 0 ) << "unknown entity " << str <<", len = " << str.length() << endl;
    00411         return QChar::null;
    00412     }
    00413     //kdDebug() << "got entity " << str << " = " << e->code << endl;
    00414
    00415     return QChar(e->code);
    00416 }
    00417
    00418 QChar KCharsets::fromEntity(const QString &str, int &len)
    00419 {
    00420     // entities are never longer than 8 chars... we start from
    00421     // that length and work backwards...
    00422     len = 8;
    00423     while(len > 0)
    00424     {
    00425         QString tmp = str.left(len);
    00426         QChar res = fromEntity(tmp);
    00427         if( res != QChar::null ) return res;
    00428         len--;
    00429     }
    00430     return QChar::null;
    00431 }
    00432
    00433
    00434 QString KCharsets::toEntity(const QChar &ch)
    00435 {
    00436     QString ent;
    00437     ent.sprintf("&#0x%x;", ch.unicode());
    00438     return ent;
    00439 }
    00440
    00441 QString KCharsets::resolveEntities( const QString &input )
    00442 {
    00443     QString text = input;
    00444     const QChar *p = text.unicode();
    00445     const QChar *end = p + text.length();
    00446     const QChar *ampersand = 0;
    00447     bool scanForSemicolon = false;
    00448
    00449     for ( ; p < end; ++p ) {
    00450         const QChar ch = *p;
    00451
    00452         if ( ch == '&' ) {
    00453             ampersand = p;
    00454             scanForSemicolon = true;
    00455             continue;
    00456         }
    00457
    00458         if ( ch != ';' || scanForSemicolon == false )
    00459             continue;
    00460
    00461         assert( ampersand );
    00462
    00463         scanForSemicolon = false;
    00464
    00465         const QChar *entityBegin = ampersand + 1;
    00466
    00467         const uint entityLength = p - entityBegin;
    00468         if ( entityLength == 0 )
    00469             continue;
    00470
    00471         const QChar entityValue = KCharsets::fromEntity( QConstString( entityBegin, entityLength ).string() );
    00472         if ( entityValue.isNull() )
    00473             continue;
    00474
    00475         const uint ampersandPos = ampersand - text.unicode();
    00476
    00477         text[ (int)ampersandPos ] = entityValue;
    00478         text.remove( ampersandPos + 1, entityLength + 1 );
    00479         p = text.unicode() + ampersandPos;
    00480         end = text.unicode() + text.length();
    00481         ampersand = 0;
    00482     }
    00483
    00484     return text;
    00485 }
    00486
    00487 QStringList KCharsets::availableEncodingNames()
    00488 {
    00489     QStringList available;
    00490
    00491     const char* const* pos = charsets_for_encoding;
    00492     while( *pos != 0 ) {
    00493         //kdDebug(0) << "key = " << *pos << endl;
    00494
    00495
    00496         // iterate thorugh the list and find the first charset that is available
    00497         for( const char* const* charsets = pos + 1;
    00498              *charsets != 0;
    00499              ++charsets ) {
    00500             //kdDebug(0) << "checking for " << *charsets << endl;
    00501 #ifdef __GNUC__
    00502 #warning FIXME?
    00503 #endif
    00504             if( true ) {
    00505                 //kdDebug(0) << *charsets << " available" << endl;
    00506                 available.append( QString::fromLatin1( *pos ));
    00507                 break;
    00508             }
    00509         }
    00510         while( *pos != 0 ) // find end of line
    00511             ++pos;
    00512         ++pos; // move to the next line
    00513     }
    00514     return available;
    00515 }
    00516
    00517 QString KCharsets::languageForEncoding( const QString &encoding )
    00518 {
    00519     int lang = kcharsets_array_search< LanguageForEncoding, int >
    00520         ( language_for_encoding, encoding.latin1());
    00521     return i18n( language_names[lang] );
    00522 }
    00523
    00524 QString KCharsets::encodingForName( const QString &descriptiveName )
    00525 {
    00526     const int left = descriptiveName.findRev( '(' );
    00527
    00528     if (left<0) // No parenthesis, so assume it is a normal encoding name
    00529     return descriptiveName.stripWhiteSpace();
    00530
    00531     QString name(descriptiveName.mid(left+1));
    00532
    00533     const int right = name.findRev( ')' );
    00534
    00535     if (right<0)
    00536         return name;
    00537
    00538     return name.left(right).stripWhiteSpace();
    00539 }
    00540
    00541 QStringList KCharsets::descriptiveEncodingNames()
    00542 {
    00543   QStringList encodings = availableEncodingNames();
    00544   QStringList::Iterator it;
    00545   for( it = encodings.begin(); it != encodings.end(); ++it ) {
    00546       QString lang = KGlobal::charsets()->languageForEncoding( *it );
    00547       *it = i18n("Descriptive Encoding Name", "%1 ( %2 )") .arg(lang) .arg(*it);
    00548   }
    00549   encodings.sort();
    00550   return encodings;
    00551 }
    00552
    00553 QTextCodec *KCharsets::codecForName(const QString &n) const
    00554 {
    00555     bool b;
    00556     return codecForName( n, b );
    00557 }
    00558
    00559 QTextCodec *KCharsets::codecForName(const QString &n, bool &ok) const
    00560 {
    00561     ok = true;
    00562
    00563     QTextCodec* codec = 0;
    00564     // dict lookup is case insensitive anyway
    00565     if((codec = d->codecForNameDict[n.isEmpty() ? "->locale<-" : n.latin1()]))
    00566         return codec; // cache hit, return
    00567
    00568     if (n.isEmpty()) {
    00569         codec = KGlobal::locale()->codecForEncoding();
    00570         d->codecForNameDict.replace("->locale<-", codec);
    00571         return codec;
    00572     }
    00573
    00574     QCString name = n.lower().latin1();
    00575     QCString key = name;
    00576     if (name.right(8) == "_charset")
    00577        name.truncate(name.length()-8);
    00578
    00579     if (name.isEmpty()) {
    00580       ok = false;
    00581       return QTextCodec::codecForName("iso8859-1");
    00582     }
    00583
    00584     codec = QTextCodec::codecForName(name);
    00585
    00586     if(codec) {
    00587         d->codecForNameDict.replace(key, codec);
    00588         return codec;
    00589     }
    00590
    00591     // these codecs are built into Qt, but the name given for the codec is different,
    00592     // so QTextCodec did not recognize it.
    00593     QCString cname = kcharsets_array_search< Builtin, const char* >( builtin, name.data());
    00594
    00595     if(!cname.isEmpty())
    00596         codec = QTextCodec::codecForName(cname);
    00597
    00598     if(codec)
    00599     {
    00600         d->codecForNameDict.replace(key, codec);
    00601         return codec;
    00602     }
    00603
    00604     // ### TODO: charmaps have changed a little since this code was written. The default dir should be changed and KFilterDev should be used for reading gzipped files.
    00605     QString dir;
    00606     {
    00607     KConfigGroupSaver cfgsav( KGlobal::config(), "i18n" );
    00608     dir = KGlobal::config()->readPathEntry("i18ndir", QString::fromLatin1("/usr/share/i18n/charmaps"));
    00609     dir += "/";
    00610     }
    00611
    00612     // these are codecs not included in Qt. They can be build up if the corresponding charmap
    00613     // is available in the charmap directory.
    00614     cname = kcharsets_array_search< Aliases, const char* >( aliases, name.data());
    00615
    00616     if(cname.isEmpty())
    00617         cname = name;
    00618     cname = cname.upper();
    00619
    00620     codec = QTextCodec::loadCharmapFile((QString)(dir + cname.data()));
    00621
    00622     if(codec) {
    00623         d->codecForNameDict.replace(key, codec);
    00624         return codec;
    00625     }
    00626
    00627     // this also failed, the last resort is now to take some compatibility charmap
    00628
    00629     cname = cname.lower();
    00630     cname = kcharsets_array_search< ConversionHints, const char* >( conversion_hints, (const char*)cname );
    00631
    00632     if(!cname.isEmpty())
    00633         codec = QTextCodec::codecForName(cname);
    00634
    00635     if(codec) {
    00636         d->codecForNameDict.replace(key, codec);
    00637         return codec;
    00638     }
    00639
    00640     // could not assign a codec, let's return Latin1
    00641     ok = false;
    00642     return QTextCodec::codecForName("iso8859-1");
    00643 }

This file is part of the documentation for kdecore Library Version 3.4.1.
Documentation copyright © 1996-2004 the KDE developers.
Generated on Sat Jun 11 20:18:01 2005 by doxygen 1.4.1 written by Dimitri van Heesch, © 1997-2003