278 lines
8.6 KiB
C++
278 lines
8.6 KiB
C++
/* -*- 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 .
|
|
*/
|
|
|
|
// Description:
|
|
// Parse a string of features specified as & separated pairs.
|
|
// e.g.
|
|
// 1001=1&2002=2&fav1=0
|
|
|
|
|
|
#include <sal/types.h>
|
|
#include <osl/endian.h>
|
|
|
|
#ifdef WNT
|
|
#include <windows.h>
|
|
#endif
|
|
|
|
#include <graphite_features.hxx>
|
|
|
|
using namespace grutils;
|
|
// These mustn't conflict with font name lists which use ; and ,
|
|
const char GrFeatureParser::FEAT_PREFIX = ':';
|
|
const char GrFeatureParser::FEAT_SEPARATOR = '&';
|
|
const char GrFeatureParser::FEAT_ID_VALUE_SEPARATOR = '=';
|
|
|
|
GrFeatureParser::GrFeatureParser(const gr_face * pFace, const ::rtl::OString lang)
|
|
: mnNumSettings(0), mbErrors(false), mpSettings(NULL)
|
|
{
|
|
maLang.label[0] = maLang.label[1] = maLang.label[2] = maLang.label[3] = '\0';
|
|
setLang(pFace, lang);
|
|
}
|
|
|
|
GrFeatureParser::GrFeatureParser(const gr_face * pFace, const ::rtl::OString features, const ::rtl::OString lang)
|
|
: mnNumSettings(0), mbErrors(false), mpSettings(NULL)
|
|
{
|
|
sal_Int32 nEquals = 0;
|
|
sal_Int32 nFeatEnd = 0;
|
|
sal_Int32 pos = 0;
|
|
maLang.num = 0u;
|
|
setLang(pFace, lang);
|
|
while ((pos < features.getLength()) && (mnNumSettings < MAX_FEATURES))
|
|
{
|
|
nEquals = features.indexOf(FEAT_ID_VALUE_SEPARATOR, pos);
|
|
if (nEquals == -1)
|
|
{
|
|
mbErrors = true;
|
|
break;
|
|
}
|
|
// check for a lang=xxx specification
|
|
const ::rtl::OString aLangPrefix("lang");
|
|
if (features.match(aLangPrefix, pos ))
|
|
{
|
|
pos = nEquals + 1;
|
|
nFeatEnd = features.indexOf(FEAT_SEPARATOR, pos);
|
|
if (nFeatEnd == -1)
|
|
{
|
|
nFeatEnd = features.getLength();
|
|
}
|
|
if (nFeatEnd - pos > 3)
|
|
mbErrors = true;
|
|
else
|
|
{
|
|
FeatId aLang = maLang;
|
|
aLang.num = 0;
|
|
for (sal_Int32 i = pos; i < nFeatEnd; i++)
|
|
aLang.label[i-pos] = features[i];
|
|
|
|
//ext_std::pair<gr::LanguageIterator,gr::LanguageIterator> aSupported
|
|
// = font.getSupportedLanguages();
|
|
//gr::LanguageIterator iL = aSupported.first;
|
|
unsigned short i = 0;
|
|
for (; i < gr_face_n_languages(pFace); i++)
|
|
{
|
|
gr_uint32 nFaceLang = gr_face_lang_by_index(pFace, i);
|
|
FeatId aSupportedLang;
|
|
aSupportedLang.num = nFaceLang;
|
|
#ifdef OSL_BIGENDIAN
|
|
// here we only expect full 3 letter codes
|
|
if (aLang.label[0] == aSupportedLang.label[0] &&
|
|
aLang.label[1] == aSupportedLang.label[1] &&
|
|
aLang.label[2] == aSupportedLang.label[2] &&
|
|
aLang.label[3] == aSupportedLang.label[3])
|
|
#else
|
|
if (aLang.label[0] == aSupportedLang.label[3] &&
|
|
aLang.label[1] == aSupportedLang.label[2] &&
|
|
aLang.label[2] == aSupportedLang.label[1] &&
|
|
aLang.label[3] == aSupportedLang.label[0])
|
|
#endif
|
|
{
|
|
maLang = aSupportedLang;
|
|
break;
|
|
}
|
|
}
|
|
if (i == gr_face_n_languages(pFace)) mbErrors = true;
|
|
else
|
|
{
|
|
mnHash = maLang.num;
|
|
mpSettings = gr_face_featureval_for_lang(pFace, maLang.num);
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
sal_uInt32 featId = 0;
|
|
if (isCharId(features, pos, nEquals - pos))
|
|
{
|
|
featId = getCharId(features, pos, nEquals - pos);
|
|
}
|
|
else
|
|
{
|
|
featId = getIntValue(features, pos, nEquals - pos);
|
|
}
|
|
const gr_feature_ref * pFref = gr_face_find_fref(pFace, featId);
|
|
pos = nEquals + 1;
|
|
nFeatEnd = features.indexOf(FEAT_SEPARATOR, pos);
|
|
if (nFeatEnd == -1)
|
|
{
|
|
nFeatEnd = features.getLength();
|
|
}
|
|
sal_Int16 featValue = 0;
|
|
featValue = getIntValue(features, pos, nFeatEnd - pos);
|
|
if (pFref && gr_fref_set_feature_value(pFref, featValue, mpSettings))
|
|
{
|
|
mnHash = (mnHash << 16) ^ ((featId << 8) | featValue);
|
|
mnNumSettings++;
|
|
}
|
|
else
|
|
mbErrors = true;
|
|
}
|
|
pos = nFeatEnd + 1;
|
|
}
|
|
}
|
|
|
|
void GrFeatureParser::setLang(const gr_face * pFace, const rtl::OString & lang)
|
|
{
|
|
FeatId aLang;
|
|
aLang.num = 0;
|
|
if (lang.getLength() >= 2)
|
|
{
|
|
for (sal_Int32 i = 0; i < lang.getLength() && i < 3; i++)
|
|
{
|
|
if (lang[i] == '-') break;
|
|
aLang.label[i] = lang[i];
|
|
}
|
|
unsigned short i = 0;
|
|
for (; i < gr_face_n_languages(pFace); i++)
|
|
{
|
|
gr_uint32 nFaceLang = gr_face_lang_by_index(pFace, i);
|
|
FeatId aSupportedLang;
|
|
aSupportedLang.num = nFaceLang;
|
|
// here we only expect full 2 & 3 letter codes
|
|
#ifdef OSL_BIGENDIAN
|
|
if (aLang.label[0] == aSupportedLang.label[0] &&
|
|
aLang.label[1] == aSupportedLang.label[1] &&
|
|
aLang.label[2] == aSupportedLang.label[2] &&
|
|
aLang.label[3] == aSupportedLang.label[3])
|
|
#else
|
|
if (aLang.label[0] == aSupportedLang.label[3] &&
|
|
aLang.label[1] == aSupportedLang.label[2] &&
|
|
aLang.label[2] == aSupportedLang.label[1] &&
|
|
aLang.label[3] == aSupportedLang.label[0])
|
|
#endif
|
|
{
|
|
maLang = aSupportedLang;
|
|
break;
|
|
}
|
|
}
|
|
if (i != gr_face_n_languages(pFace))
|
|
{
|
|
if (mpSettings)
|
|
gr_featureval_destroy(mpSettings);
|
|
mpSettings = gr_face_featureval_for_lang(pFace, maLang.num);
|
|
mnHash = maLang.num;
|
|
}
|
|
}
|
|
if (!mpSettings)
|
|
mpSettings = gr_face_featureval_for_lang(pFace, 0);
|
|
}
|
|
|
|
GrFeatureParser::~GrFeatureParser()
|
|
{
|
|
if (mpSettings)
|
|
{
|
|
gr_featureval_destroy(mpSettings);
|
|
mpSettings = NULL;
|
|
}
|
|
}
|
|
|
|
bool GrFeatureParser::isCharId(const rtl::OString & id, size_t offset, size_t length)
|
|
{
|
|
if (length > 4) return false;
|
|
for (size_t i = 0; i < length; i++)
|
|
{
|
|
if (i > 0 && id[offset+i] == '\0') continue;
|
|
if ((id[offset+i] < 0x20) || (id[offset+i] < 0))
|
|
return false;
|
|
if (i==0 && (id[offset+i] < 0x41))
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
gr_uint32 GrFeatureParser::getCharId(const rtl::OString & id, size_t offset, size_t length)
|
|
{
|
|
FeatId charId;
|
|
charId.num = 0;
|
|
#ifdef WORDS_BIGENDIAN
|
|
for (size_t i = 0; i < length; i++)
|
|
{
|
|
charId.label[i] = id[offset+i];
|
|
}
|
|
#else
|
|
for (size_t i = 0; i < length; i++)
|
|
{
|
|
charId.label[3-i] = id[offset+i];
|
|
}
|
|
#endif
|
|
return charId.num;
|
|
}
|
|
|
|
short GrFeatureParser::getIntValue(const rtl::OString & id, size_t offset, size_t length)
|
|
{
|
|
short value = 0;
|
|
int sign = 1;
|
|
for (size_t i = 0; i < length; i++)
|
|
{
|
|
switch (id[offset + i])
|
|
{
|
|
case '0':
|
|
case '1':
|
|
case '2':
|
|
case '3':
|
|
case '4':
|
|
case '5':
|
|
case '6':
|
|
case '7':
|
|
case '8':
|
|
case '9':
|
|
value *= 10;
|
|
if (sign < 0)
|
|
{
|
|
value = -(id[offset + i] - '0');
|
|
sign = 1;
|
|
}
|
|
value += (id[offset + i] - '0');
|
|
break;
|
|
case '-':
|
|
if (i == 0)
|
|
sign = -1;
|
|
else
|
|
{
|
|
mbErrors = true;
|
|
break;
|
|
}
|
|
default:
|
|
mbErrors = true;
|
|
break;
|
|
}
|
|
}
|
|
return value;
|
|
}
|
|
|
|
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|