Unused code

Change-Id: Idfc964930c242d752a78cd109d75d809bce4de11
Reviewed-on: https://gerrit.libreoffice.org/31470
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Khaled Hosny <khaledhosny@eglug.org>

3 files changed, 1 insertions, 411 deletions

diff --git a/vcl/source/fontsubset/gsub.cxx b/vcl/source/fontsubset/gsub.cxx
deleted file mode 100644
index 52e6d8cc0a76..000000000000
--- a/vcl/source/fontsubset/gsub.cxx
+++ /dev/null
@@ -1,342 +0,0 @@
-/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
-/*
- * This file is part of the LibreOffice project.
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/.
- *
- * This file incorporates work covered by the following license notice:
- *
- *   Licensed to the Apache Software Foundation (ASF) under one or more
- *   contributor license agreements. See the NOTICE file distributed
- *   with this work for additional information regarding copyright
- *   ownership. The ASF licenses this file to you under the Apache
- *   License, Version 2.0 (the "License"); you may not use this file
- *   except in compliance with the License. You may obtain a copy of
- *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
- */
-
-#include "sft.hxx"
-
-#include "gsub.h"
-
-#include <osl/diagnose.h>
-
-#include <vector>
-#include <map>
-#include <algorithm>
-
-namespace vcl
-{
-
-typedef sal_uInt8 FT_Byte;
-
-typedef std::map<sal_uInt16,sal_uInt16> GlyphSubstitution;
-
-inline sal_uInt32 NEXT_Long( const unsigned char* &p )
-{
-    sal_uInt32 nVal = (p[0]<<24) + (p[1]<<16) + (p[2]<<8) + p[3];
-    p += 4;
-    return nVal;
-}
-
-inline sal_uInt16 NEXT_UShort( const unsigned char* &p )
-{
-    sal_uInt16 nVal = (p[0]<<8) + p[1];
-    p += 2;
-    return nVal;
-}
-
-#define MKTAG(s) ((((((s[0]<<8)+s[1])<<8)+s[2])<<8)+s[3])
-
-bool ReadGSUB( struct TrueTypeFont* pTTFile,
-    int nRequestedScript, int nRequestedLangsys )
-{
-    const FT_Byte* pGsubBase = pTTFile->tables[ O_gsub ];
-    if( !pGsubBase )
-        return false;
-
-    // #129682# check offsets inside GSUB table
-    const FT_Byte* pGsubLimit = pGsubBase + pTTFile->tlens[ O_gsub ];
-
-    // parse GSUB header
-    const FT_Byte* pGsubHeader = pGsubBase;
-    const sal_uInt32 nVersion           = NEXT_Long( pGsubHeader );
-    const sal_uInt16 nOfsScriptList     = NEXT_UShort( pGsubHeader );
-    const sal_uInt16 nOfsFeatureTable   = NEXT_UShort( pGsubHeader );
-    const sal_uInt16 nOfsLookupList     = NEXT_UShort( pGsubHeader );
-
-    // sanity check the GSUB header
-    if( nVersion != 0x00010000 )
-        if( nVersion != 0x00001000 )    // workaround for SunBatang etc.
-            return false;               // unknown format or broken
-
-    std::vector<sal_uInt32> aReqFeatureTagList;
-
-    aReqFeatureTagList.push_back( MKTAG("vert") );
-
-    std::vector<sal_uInt16> aFeatureIndexList;
-
-    // parse Script Table
-    const FT_Byte* pScriptHeader = pGsubBase + nOfsScriptList;
-    const sal_uInt16 nCntScript = NEXT_UShort( pScriptHeader );
-    if( pGsubLimit < pScriptHeader + 6 * nCntScript )
-        return false;
-    for( sal_uInt16 nScriptIndex = 0; nScriptIndex < nCntScript; ++nScriptIndex )
-    {
-        const sal_uInt32 nTag            = NEXT_Long( pScriptHeader ); // e.g. hani/arab/kana/hang
-        const sal_uInt16 nOfsScriptTable= NEXT_UShort( pScriptHeader );
-        if( (nTag != (sal_uInt16)nRequestedScript) && (nRequestedScript != 0) )
-            continue;
-
-        const FT_Byte* pScriptTable     = pGsubBase + nOfsScriptList + nOfsScriptTable;
-        if( pGsubLimit < pScriptTable + 4 )
-            return false;
-        const sal_uInt16 nDefaultLangsysOfs = NEXT_UShort( pScriptTable );
-        const sal_uInt16 nCntLangSystem     = NEXT_UShort( pScriptTable );
-        sal_uInt16 nLangsysOffset = 0;
-        if( pGsubLimit < pScriptTable + 6 * nCntLangSystem )
-            return false;
-        for( sal_uInt16 nLangsysIndex = 0; nLangsysIndex < nCntLangSystem; ++nLangsysIndex )
-        {
-            const sal_uInt32 nInnerTag = NEXT_Long( pScriptTable );    // e.g. KOR/ZHS/ZHT/JAN
-            const sal_uInt16 nOffset= NEXT_UShort( pScriptTable );
-            if( (nInnerTag != (sal_uInt16)nRequestedLangsys) && (nRequestedLangsys != 0) )
-                continue;
-            nLangsysOffset = nOffset;
-            break;
-        }
-
-        if( (nDefaultLangsysOfs != 0) && (nDefaultLangsysOfs != nLangsysOffset) )
-        {
-            const FT_Byte* pLangSys = pGsubBase + nOfsScriptList + nOfsScriptTable + nDefaultLangsysOfs;
-            if( pGsubLimit < pLangSys + 6 )
-                return false;
-            /*const sal_uInt16 nLookupOrder   =*/ NEXT_UShort( pLangSys );
-            const sal_uInt16 nReqFeatureIdx = NEXT_UShort( pLangSys );
-            const sal_uInt16 nCntFeature    = NEXT_UShort( pLangSys );
-            if( pGsubLimit < pLangSys + 2 * nCntFeature )
-                return false;
-            aFeatureIndexList.push_back( nReqFeatureIdx );
-            for( sal_uInt16 i = 0; i < nCntFeature; ++i )
-            {
-                const sal_uInt16 nFeatureIndex = NEXT_UShort( pLangSys );
-                aFeatureIndexList.push_back( nFeatureIndex );
-            }
-        }
-
-        if( nLangsysOffset != 0 )
-        {
-            const FT_Byte* pLangSys = pGsubBase + nOfsScriptList + nOfsScriptTable + nLangsysOffset;
-            if( pGsubLimit < pLangSys + 6 )
-                return false;
-            /*const sal_uInt16 nLookupOrder   =*/ NEXT_UShort( pLangSys );
-            const sal_uInt16 nReqFeatureIdx = NEXT_UShort( pLangSys );
-            const sal_uInt16 nCntFeature    = NEXT_UShort( pLangSys );
-            if( pGsubLimit < pLangSys + 2 * nCntFeature )
-                return false;
-            aFeatureIndexList.push_back( nReqFeatureIdx );
-            for( sal_uInt16 i = 0; i < nCntFeature; ++i )
-            {
-                const sal_uInt16 nFeatureIndex = NEXT_UShort( pLangSys );
-                aFeatureIndexList.push_back( nFeatureIndex );
-            }
-        }
-    }
-
-    if( aFeatureIndexList.empty() )
-        return true;
-
-    std::vector<sal_uInt16> aLookupIndexList;
-    std::vector<sal_uInt16> aLookupOffsetList;
-
-    // parse Feature Table
-    const FT_Byte* pFeatureHeader = pGsubBase + nOfsFeatureTable;
-    if( pGsubLimit < pFeatureHeader + 2 )
-          return false;
-    const sal_uInt16 nCntFeature = NEXT_UShort( pFeatureHeader );
-    if( pGsubLimit < pFeatureHeader + 6 * nCntFeature )
-          return false;
-    for( sal_uInt16 nFeatureIndex = 0; nFeatureIndex < nCntFeature; ++nFeatureIndex )
-    {
-        const sal_uInt32 nTag    = NEXT_Long( pFeatureHeader ); // e.g. locl/vert/trad/smpl/liga/fina/...
-        const sal_uInt16 nOffset= NEXT_UShort( pFeatureHeader );
-
-        // ignore unneeded feature lookups
-        if( aFeatureIndexList[0] != nFeatureIndex ) // do not ignore the required feature
-        {
-            const int nRequested = std::count( aFeatureIndexList.begin(), aFeatureIndexList.end(), nFeatureIndex);
-            if( !nRequested )   // ignore features that are not requested
-                continue;
-            const int nAvailable = std::count( aReqFeatureTagList.begin(), aReqFeatureTagList.end(), nTag);
-            if( !nAvailable )   // some fonts don't provide features they request!
-                continue;
-        }
-
-        const FT_Byte* pFeatureTable = pGsubBase + nOfsFeatureTable + nOffset;
-        if( pGsubLimit < pFeatureTable + 2 )
-            return false;
-        const sal_uInt16 nCntLookups = NEXT_UShort( pFeatureTable );
-        if( pGsubLimit < pFeatureTable + 2 * nCntLookups )
-            return false;
-        for( sal_uInt16 i = 0; i < nCntLookups; ++i )
-        {
-            const sal_uInt16 nLookupIndex = NEXT_UShort( pFeatureTable );
-            aLookupIndexList.push_back( nLookupIndex );
-        }
-        if( nCntLookups == 0 ) //### hack needed by Mincho/Gothic/Mingliu/Simsun/...
-            aLookupIndexList.push_back( 0 );
-    }
-
-    // parse Lookup List
-    const FT_Byte* pLookupHeader = pGsubBase + nOfsLookupList;
-    if( pGsubLimit < pLookupHeader + 2 )
-        return false;
-    const sal_uInt16 nCntLookupTable = NEXT_UShort( pLookupHeader );
-    if( pGsubLimit < pLookupHeader + 2 * nCntLookupTable )
-        return false;
-    for( sal_uInt16 nLookupIdx = 0; nLookupIdx < nCntLookupTable; ++nLookupIdx )
-    {
-        const sal_uInt16 nOffset = NEXT_UShort( pLookupHeader );
-        if( std::count( aLookupIndexList.begin(), aLookupIndexList.end(), nLookupIdx ) )
-            aLookupOffsetList.push_back( nOffset );
-    }
-
-    std::vector<sal_uInt16>::const_iterator it = aLookupOffsetList.begin();
-    for(; it != aLookupOffsetList.end(); ++it )
-    {
-        const sal_uInt16 nOfsLookupTable = *it;
-        const FT_Byte* pLookupTable = pGsubBase + nOfsLookupList + nOfsLookupTable;
-        if( pGsubLimit < pLookupTable + 6 )
-            return false;
-        const sal_uInt16 eLookupType        = NEXT_UShort( pLookupTable );
-        /*const sal_uInt16 eLookupFlag        =*/ NEXT_UShort( pLookupTable );
-        const sal_uInt16 nCntLookupSubtable = NEXT_UShort( pLookupTable );
-
-        // TODO: switch( eLookupType )
-        if( eLookupType != 1 )  // TODO: once we go beyond SingleSubst
-            continue;
-
-        if( pGsubLimit < pLookupTable + 2 * nCntLookupSubtable )
-            return false;
-        for( sal_uInt16 nSubTableIdx = 0; nSubTableIdx < nCntLookupSubtable; ++nSubTableIdx )
-        {
-            const sal_uInt16 nOfsSubLookupTable = NEXT_UShort( pLookupTable );
-            const FT_Byte* pSubLookup = pGsubBase + nOfsLookupList + nOfsLookupTable + nOfsSubLookupTable;
-            if( pGsubLimit < pSubLookup + 6 )
-                return false;
-            const sal_uInt16 nFmtSubstitution   = NEXT_UShort( pSubLookup );
-            const sal_uInt16 nOfsCoverage       = NEXT_UShort( pSubLookup );
-
-            typedef std::pair<sal_uInt16,sal_uInt16> GlyphSubst;
-            std::vector<GlyphSubst> aSubstVector;
-
-            const FT_Byte* pCoverage    = pGsubBase
-                + nOfsLookupList + nOfsLookupTable + nOfsSubLookupTable + nOfsCoverage;
-            if( pGsubLimit < pCoverage + 4 )
-                return false;
-            const sal_uInt16 nFmtCoverage   = NEXT_UShort( pCoverage );
-            switch( nFmtCoverage )
-            {
-                case 1:         // Coverage Format 1
-                {
-                    const sal_uInt16 nCntGlyph = NEXT_UShort( pCoverage );
-                    if( pGsubLimit < pCoverage + 2 * nCntGlyph )
-                        // TODO? nCntGlyph = (pGsubLimit - pCoverage) / 2;
-                        return false;
-                    aSubstVector.reserve( nCntGlyph );
-                    for( sal_uInt16 i = 0; i < nCntGlyph; ++i )
-                    {
-                        const sal_uInt16 nGlyphId = NEXT_UShort( pCoverage );
-                        aSubstVector.push_back( GlyphSubst( nGlyphId, 0 ) );
-                    }
-                }
-                break;
-
-                case 2:         // Coverage Format 2
-                {
-                    const sal_uInt16 nCntRange = NEXT_UShort( pCoverage );
-                    if( pGsubLimit < pCoverage + 6 * nCntRange )
-                        // TODO? nCntGlyph = (pGsubLimit - pCoverage) / 6;
-                        return false;
-                    for( int i = nCntRange; --i >= 0; )
-                    {
-                        const sal_uInt32 nGlyph0 = NEXT_UShort( pCoverage );
-                        const sal_uInt32 nGlyph1 = NEXT_UShort( pCoverage );
-                        const sal_uInt16 nCovIdx = NEXT_UShort( pCoverage );
-                        for( sal_uInt32 j = nGlyph0; j <= nGlyph1; ++j )
-                            aSubstVector.push_back( GlyphSubst( static_cast<sal_uInt16>(j + nCovIdx), 0 ) );
-                    }
-                }
-                break;
-            }
-
-            std::vector<GlyphSubst>::iterator subst_it( aSubstVector.begin() );
-
-            switch( nFmtSubstitution )
-            {
-                case 1:     // Single Substitution Format 1
-                {
-                    const sal_uInt16 nDeltaGlyphId = NEXT_UShort( pSubLookup );
-
-                    for(; subst_it != aSubstVector.end(); ++subst_it )
-                        (*subst_it).second = (*subst_it).first + nDeltaGlyphId;
-                }
-                break;
-
-                case 2:     // Single Substitution Format 2
-                {
-                    const sal_uInt16 nCntGlyph = NEXT_UShort( pSubLookup );
-                    for( int i = nCntGlyph; (subst_it != aSubstVector.end()) && (--i>=0); ++subst_it )
-                    {
-                        if( pGsubLimit < pSubLookup + 2 )
-                            return false;
-                        const sal_uInt16 nGlyphId = NEXT_UShort( pSubLookup );
-                        (*subst_it).second = nGlyphId;
-                    }
-                }
-                break;
-            }
-
-            // now apply the glyph substitutions that have been collected in this subtable
-            if( !aSubstVector.empty() )
-            {
-                GlyphSubstitution* pGSubstitution = new GlyphSubstitution;
-                pTTFile->pGSubstitution = static_cast<void*>(pGSubstitution);
-                for( subst_it = aSubstVector.begin(); subst_it != aSubstVector.end(); ++subst_it )
-                    (*pGSubstitution)[ (*subst_it).first ] =  (*subst_it).second;
-            }
-        }
-    }
-    return true;
-}
-
-void ReleaseGSUB(struct TrueTypeFont* pTTFile)
-{
-    GlyphSubstitution* pGlyphSubstitution = static_cast<GlyphSubstitution*>(pTTFile->pGSubstitution);
-    delete pGlyphSubstitution;
-}
-
-int UseGSUB( struct TrueTypeFont* pTTFile, int nGlyph )
-{
-    GlyphSubstitution* pGlyphSubstitution = static_cast<GlyphSubstitution*>(pTTFile->pGSubstitution);
-    if( pGlyphSubstitution != nullptr )
-    {
-        GlyphSubstitution::const_iterator it( pGlyphSubstitution->find( sal::static_int_cast<sal_uInt16>(nGlyph) ) );
-        if( it != pGlyphSubstitution->end() )
-            nGlyph = (*it).second;
-    }
-
-    return nGlyph;
-}
-
-int HasVerticalGSUB( struct TrueTypeFont* pTTFile )
-{
-    GlyphSubstitution* pGlyphSubstitution = static_cast<GlyphSubstitution*>(pTTFile->pGSubstitution);
-    return pGlyphSubstitution ? +1 : 0;
-}
-
-}
-
-/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/source/fontsubset/gsub.h b/vcl/source/fontsubset/gsub.h
deleted file mode 100644
index 51f5ce8bbeab..000000000000
--- a/vcl/source/fontsubset/gsub.h
+++ /dev/null
@@ -1,38 +0,0 @@
-/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
-/*
- * This file is part of the LibreOffice project.
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/.
- *
- * This file incorporates work covered by the following license notice:
- *
- *   Licensed to the Apache Software Foundation (ASF) under one or more
- *   contributor license agreements. See the NOTICE file distributed
- *   with this work for additional information regarding copyright
- *   ownership. The ASF licenses this file to you under the Apache
- *   License, Version 2.0 (the "License"); you may not use this file
- *   except in compliance with the License. You may obtain a copy of
- *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
- */
-
-#ifndef INCLUDED_VCL_SOURCE_FONTSUBSET_GSUB_H
-#define INCLUDED_VCL_SOURCE_FONTSUBSET_GSUB_H
-
-namespace vcl
-{
-
-int HasVerticalGSUB( struct vcl::TrueTypeFont* pTTFile );
-
-int UseGSUB( struct vcl::TrueTypeFont* pTTFile, int nGlyph );
-
-bool ReadGSUB( struct vcl::TrueTypeFont* pTTFile, int nRequestedScript, int nRequestedLangsys );
-
-void ReleaseGSUB( struct vcl::TrueTypeFont* pTTFile );
-
-}
-
-#endif // INCLUDED_VCL_SOURCE_FONTSUBSET_GSUB_H
-
-/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/source/fontsubset/sft.cxx b/vcl/source/fontsubset/sft.cxx
index 69220268aaa0..6ee64ec63463 100644
--- a/vcl/source/fontsubset/sft.cxx
+++ b/vcl/source/fontsubset/sft.cxx
@@ -34,7 +34,6 @@
 #include <sys/stat.h>
 #endif
 #include "sft.hxx"
-#include "gsub.h"
 #include "ttcr.hxx"
 #include "xlat.hxx"
 #include <rtl/crc.h>
@@ -1711,7 +1710,6 @@ static int doOpenTTFont( sal_uInt32 facenum, TrueTypeFont* t )
     GetNames(t);
     FindCmap(t);
     GetKern(t);
-    ReadGSUB( t, 0, 0 );
 
     return SF_OK;
 }
@@ -1735,8 +1733,6 @@ void CloseTTFont(TrueTypeFont *ttf)
     free(ttf->tlens);
     free(ttf->kerntables);
 
-    ReleaseGSUB(ttf);
-
     free(ttf);
     return;
 }
@@ -2345,7 +2341,7 @@ int  CreateT42FromTTGlyphs(TrueTypeFont  *ttf,
 }
 
 #if defined(_WIN32) || defined(MACOSX) || defined(IOS)
-sal_uInt16 MapChar(TrueTypeFont *ttf, sal_uInt16 ch, bool bvertical)
+sal_uInt16 MapChar(TrueTypeFont *ttf, sal_uInt16 ch)
 {
     switch (ttf->cmapType) {
         case CMAP_MS_Symbol:
@@ -2366,8 +2362,6 @@ sal_uInt16 MapChar(TrueTypeFont *ttf, sal_uInt16 ch, bool bvertical)
     }
     const sal_uInt32 nMaxCmapSize = ttf->ptr + ttf->fsize - ttf->cmap;
     ch = (sal_uInt16)ttf->mapper(ttf->cmap, nMaxCmapSize, ch);
-    if (ch!=0 && bvertical)
-        ch = (sal_uInt16)UseGSUB(ttf,ch);
     return ch;
 }
 #endif
@@ -2735,30 +2729,6 @@ bool getTTCoverage(
     return bRet;
 }
 
-void getTTScripts(std::vector< sal_uInt32 > &rScriptTags, const unsigned char* pTable, size_t nLength)
-{
-    if (nLength < 6)
-        return;
-
-    // parse GSUB/GPOS header
-    const sal_uInt16 nOfsScriptList = GetUInt16(pTable, 4);
-
-    // parse Script Table
-    const sal_uInt16 nCntScript = GetUInt16(pTable, nOfsScriptList);
-    sal_uInt32 nCurrentPos = nOfsScriptList+2;
-    for( sal_uInt16 nScriptIndex = 0;
-         nScriptIndex < nCntScript && nLength >= 6; ++nScriptIndex,
-         nLength-=6 )
-    {
-        sal_uInt32 nTag = GetUInt32(pTable, nCurrentPos);
-        nCurrentPos+=6;
-        rScriptTags.push_back(nTag); // e.g. hani/arab/kana/hang
-    }
-
-    std::sort(rScriptTags.begin(), rScriptTags.end());
-    rScriptTags.erase(std::unique(rScriptTags.begin(), rScriptTags.end()), rScriptTags.end());
-}
-
 } // namespace vcl
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */