LCOV - code coverage report
Current view: top level - vcl/source/glyphs - graphite_features.cxx (source / functions) Hit Total Coverage
Test: commit e02a6cb2c3e2b23b203b422e4e0680877f232636 Lines: 0 121 0.0 %
Date: 2014-04-14 Functions: 0 7 0.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /*
       3             :  * This file is part of the LibreOffice project.
       4             :  *
       5             :  * This Source Code Form is subject to the terms of the Mozilla Public
       6             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       8             :  *
       9             :  * This file incorporates work covered by the following license notice:
      10             :  *
      11             :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12             :  *   contributor license agreements. See the NOTICE file distributed
      13             :  *   with this work for additional information regarding copyright
      14             :  *   ownership. The ASF licenses this file to you under the Apache
      15             :  *   License, Version 2.0 (the "License"); you may not use this file
      16             :  *   except in compliance with the License. You may obtain a copy of
      17             :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18             :  */
      19             : 
      20             : // Description:
      21             : // Parse a string of features specified as & separated pairs.
      22             : // e.g.
      23             : // 1001=1&2002=2&fav1=0
      24             : 
      25             : #include <sal/types.h>
      26             : #include <osl/endian.h>
      27             : 
      28             : #ifdef WNT
      29             : #include <windows.h>
      30             : #endif
      31             : 
      32             : #include <graphite_features.hxx>
      33             : 
      34             : using namespace grutils;
      35             : // These mustn't conflict with font name lists which use ; and ,
      36             : const char GrFeatureParser::FEAT_PREFIX = ':';
      37             : const char GrFeatureParser::FEAT_SEPARATOR = '&';
      38             : const char GrFeatureParser::FEAT_ID_VALUE_SEPARATOR = '=';
      39             : 
      40           0 : GrFeatureParser::GrFeatureParser(const gr_face * pFace, const OString& lang)
      41           0 :     : mnNumSettings(0), mbErrors(false), mpSettings(NULL)
      42             : {
      43           0 :     maLang.label[0] = maLang.label[1] = maLang.label[2] = maLang.label[3] = '\0';
      44           0 :     setLang(pFace, lang);
      45           0 : }
      46             : 
      47           0 : GrFeatureParser::GrFeatureParser(const gr_face * pFace, const OString& features, const OString& lang)
      48           0 :     : mnNumSettings(0), mbErrors(false), mpSettings(NULL)
      49             : {
      50           0 :     sal_Int32 nEquals = 0;
      51           0 :     sal_Int32 nFeatEnd = 0;
      52           0 :     sal_Int32 pos = 0;
      53           0 :     maLang.num = 0u;
      54           0 :     setLang(pFace, lang);
      55           0 :     while ((pos < features.getLength()) && (mnNumSettings < MAX_FEATURES))
      56             :     {
      57           0 :         nEquals = features.indexOf(FEAT_ID_VALUE_SEPARATOR, pos);
      58           0 :         if (nEquals == -1)
      59             :         {
      60           0 :             mbErrors = true;
      61           0 :             break;
      62             :         }
      63             :         // check for a lang=xxx specification
      64           0 :         const OString aLangPrefix("lang");
      65           0 :         if (features.match(aLangPrefix, pos ))
      66             :         {
      67           0 :             pos = nEquals + 1;
      68           0 :             nFeatEnd = features.indexOf(FEAT_SEPARATOR, pos);
      69           0 :             if (nFeatEnd == -1)
      70             :             {
      71           0 :                 nFeatEnd = features.getLength();
      72             :             }
      73           0 :             if (nFeatEnd - pos > 3)
      74           0 :                 mbErrors = true;
      75             :             else
      76             :             {
      77           0 :                 FeatId aLang = maLang;
      78           0 :                 aLang.num = 0;
      79           0 :                 for (sal_Int32 i = pos; i < nFeatEnd; i++)
      80           0 :                     aLang.label[i-pos] = features[i];
      81             : 
      82             :                 //ext_std::pair<gr::LanguageIterator,gr::LanguageIterator> aSupported
      83             :                 //    = font.getSupportedLanguages();
      84             :                 //gr::LanguageIterator iL = aSupported.first;
      85           0 :                 unsigned short i = 0;
      86           0 :                 for (; i < gr_face_n_languages(pFace); i++)
      87             :                 {
      88           0 :                     gr_uint32 nFaceLang = gr_face_lang_by_index(pFace, i);
      89             :                     FeatId aSupportedLang;
      90           0 :                     aSupportedLang.num = nFaceLang;
      91             : #ifdef OSL_BIGENDIAN
      92             :                     // here we only expect full 3 letter codes
      93             :                     if (aLang.label[0] == aSupportedLang.label[0] &&
      94             :                         aLang.label[1] == aSupportedLang.label[1] &&
      95             :                         aLang.label[2] == aSupportedLang.label[2] &&
      96             :                         aLang.label[3] == aSupportedLang.label[3])
      97             : #else
      98           0 :                     if (aLang.label[0] == aSupportedLang.label[3] &&
      99           0 :                         aLang.label[1] == aSupportedLang.label[2] &&
     100           0 :                         aLang.label[2] == aSupportedLang.label[1] &&
     101           0 :                         aLang.label[3] == aSupportedLang.label[0])
     102             : #endif
     103             :                     {
     104           0 :                         maLang = aSupportedLang;
     105           0 :                         break;
     106             :                     }
     107             :                 }
     108           0 :                 if (i == gr_face_n_languages(pFace)) mbErrors = true;
     109             :                 else
     110             :                 {
     111           0 :                     mnHash = maLang.num;
     112           0 :                     mpSettings = gr_face_featureval_for_lang(pFace, maLang.num);
     113             :                 }
     114             :             }
     115             :         }
     116             :         else
     117             :         {
     118           0 :             sal_uInt32 featId = 0;
     119           0 :             if (isCharId(features, pos, nEquals - pos))
     120             :             {
     121           0 :                 featId = getCharId(features, pos, nEquals - pos);
     122             :             }
     123             :             else
     124             :             {
     125           0 :                 featId = getIntValue(features, pos, nEquals - pos);
     126             :             }
     127           0 :             const gr_feature_ref * pFref = gr_face_find_fref(pFace, featId);
     128           0 :             pos = nEquals + 1;
     129           0 :             nFeatEnd = features.indexOf(FEAT_SEPARATOR, pos);
     130           0 :             if (nFeatEnd == -1)
     131             :             {
     132           0 :                 nFeatEnd = features.getLength();
     133             :             }
     134           0 :             sal_Int16 featValue = 0;
     135           0 :             featValue = getIntValue(features, pos, nFeatEnd - pos);
     136           0 :             if (pFref && gr_fref_set_feature_value(pFref, featValue, mpSettings))
     137             :             {
     138           0 :                 mnHash = (mnHash << 16) ^ ((featId << 8) | featValue);
     139           0 :                 mnNumSettings++;
     140             :             }
     141             :             else
     142           0 :                 mbErrors = true;
     143             :         }
     144           0 :         pos = nFeatEnd + 1;
     145           0 :     }
     146           0 : }
     147             : 
     148           0 : void GrFeatureParser::setLang(const gr_face * pFace, const OString & lang)
     149             : {
     150             :     FeatId aLang;
     151           0 :     aLang.num = 0;
     152           0 :     if (lang.getLength() >= 2)
     153             :     {
     154           0 :         for (sal_Int32 i = 0; i < lang.getLength() && i < 3; i++)
     155             :         {
     156           0 :             if (lang[i] == '-') break;
     157           0 :             aLang.label[i] = lang[i];
     158             :         }
     159           0 :         unsigned short i = 0;
     160           0 :         for (; i < gr_face_n_languages(pFace); i++)
     161             :         {
     162           0 :             gr_uint32 nFaceLang = gr_face_lang_by_index(pFace, i);
     163             :             FeatId aSupportedLang;
     164           0 :             aSupportedLang.num = nFaceLang;
     165             :             // here we only expect full 2 & 3 letter codes
     166             : #ifdef OSL_BIGENDIAN
     167             :             if (aLang.label[0] == aSupportedLang.label[0] &&
     168             :                 aLang.label[1] == aSupportedLang.label[1] &&
     169             :                 aLang.label[2] == aSupportedLang.label[2] &&
     170             :                 aLang.label[3] == aSupportedLang.label[3])
     171             : #else
     172           0 :             if (aLang.label[0] == aSupportedLang.label[3] &&
     173           0 :                 aLang.label[1] == aSupportedLang.label[2] &&
     174           0 :                 aLang.label[2] == aSupportedLang.label[1] &&
     175           0 :                 aLang.label[3] == aSupportedLang.label[0])
     176             : #endif
     177             :             {
     178           0 :                 maLang = aSupportedLang;
     179           0 :                 break;
     180             :             }
     181             :         }
     182           0 :         if (i != gr_face_n_languages(pFace))
     183             :         {
     184           0 :             if (mpSettings)
     185           0 :                 gr_featureval_destroy(mpSettings);
     186           0 :             mpSettings = gr_face_featureval_for_lang(pFace, maLang.num);
     187           0 :             mnHash = maLang.num;
     188             :         }
     189             :     }
     190           0 :     if (!mpSettings)
     191           0 :         mpSettings = gr_face_featureval_for_lang(pFace, 0);
     192           0 : }
     193             : 
     194           0 : GrFeatureParser::~GrFeatureParser()
     195             : {
     196           0 :     if (mpSettings)
     197             :     {
     198           0 :         gr_featureval_destroy(mpSettings);
     199           0 :         mpSettings = NULL;
     200             :     }
     201           0 : }
     202             : 
     203           0 : bool GrFeatureParser::isCharId(const OString & id, size_t offset, size_t length)
     204             : {
     205           0 :     if (length > 4) return false;
     206           0 :     for (size_t i = 0; i < length; i++)
     207             :     {
     208           0 :         if (i > 0 && id[offset+i] == '\0') continue;
     209           0 :         if (id[offset+i] < 0x20 || static_cast<signed char>(id[offset+i]) < 0)
     210           0 :             return false;
     211           0 :         if (i==0 && (id[offset+i] < 0x41))
     212           0 :             return false;
     213             :     }
     214           0 :     return true;
     215             : }
     216             : 
     217           0 : gr_uint32 GrFeatureParser::getCharId(const OString & id, size_t offset, size_t length)
     218             : {
     219             :     FeatId charId;
     220           0 :     charId.num = 0;
     221             : #ifdef OSL_BIGENDIAN
     222             :     for (size_t i = 0; i < length; i++)
     223             :     {
     224             :         charId.label[i] = id[offset+i];
     225             :     }
     226             : #else
     227           0 :     for (size_t i = 0; i < length; i++)
     228             :     {
     229           0 :         charId.label[3-i] = id[offset+i];
     230             :     }
     231             : #endif
     232           0 :     return charId.num;
     233             : }
     234             : 
     235           0 : short GrFeatureParser::getIntValue(const OString & id, size_t offset, size_t length)
     236             : {
     237           0 :     short value = 0;
     238           0 :     int sign = 1;
     239           0 :     for (size_t i = 0; i < length; i++)
     240             :     {
     241           0 :         switch (id[offset + i])
     242             :         {
     243             :         case '0':
     244             :         case '1':
     245             :         case '2':
     246             :         case '3':
     247             :         case '4':
     248             :         case '5':
     249             :         case '6':
     250             :         case '7':
     251             :         case '8':
     252             :         case '9':
     253           0 :             value *= 10;
     254           0 :             if (sign < 0)
     255             :             {
     256           0 :                 value = -(id[offset + i] - '0');
     257           0 :                 sign = 1;
     258             :             }
     259           0 :             value += (id[offset + i] - '0');
     260           0 :             break;
     261             :         case '-':
     262           0 :             if (i == 0)
     263           0 :                 sign = -1;
     264             :             else
     265             :             {
     266           0 :                 mbErrors = true;
     267           0 :                 break;
     268             :             }
     269             :         default:
     270           0 :             mbErrors = true;
     271           0 :             break;
     272             :         }
     273             :     }
     274           0 :     return value;
     275             : }
     276             : 
     277             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

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