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//
// Copyright (c) 2009-2011 Artyom Beilis (Tonkikh)
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
#define BOOST_LOCALE_SOURCE
#include <boost/locale/boundary.hpp>
#include <boost/locale/generator.hpp>
#include <boost/locale/hold_ptr.hpp>
#include <unicode/uversion.h>
#if U_ICU_VERSION_MAJOR_NUM*100 + U_ICU_VERSION_MINOR_NUM >= 306
#include <unicode/utext.h>
#endif
#include <unicode/brkiter.h>
#include <unicode/rbbi.h>
#include "cdata.hpp"
#include "all_generator.hpp"
#include "icu_util.hpp"
#include "uconv.hpp"
namespace boost {
namespace locale {
namespace boundary {
namespace impl_icu {
using namespace boost::locale::impl_icu;
index_type map_direct(boundary_type t,icu::BreakIterator *it,int reserve)
{
index_type indx;
indx.reserve(reserve);
#if U_ICU_VERSION_MAJOR_NUM >= 52
icu::BreakIterator *rbbi=it;
#else
icu::RuleBasedBreakIterator *rbbi=dynamic_cast<icu::RuleBasedBreakIterator *>(it);
#endif
indx.push_back(break_info());
it->first();
int pos=0;
while((pos=it->next())!=icu::BreakIterator::DONE) {
indx.push_back(break_info(pos));
/// Character does not have any specific break types
if(t!=character && rbbi) {
//
// There is a collapse for MSVC: int32_t defined by both boost::cstdint and icu...
// So need to pick one ;(
//
std::vector< ::int32_t> buffer;
::int32_t membuf[8]={0}; // try not to use memory allocation if possible
::int32_t *buf=membuf;
UErrorCode err=U_ZERO_ERROR;
int n = rbbi->getRuleStatusVec(buf,8,err);
if(err == U_BUFFER_OVERFLOW_ERROR) {
buf=&buffer.front();
buffer.resize(n,0);
n = rbbi->getRuleStatusVec(buf,buffer.size(),err);
}
check_and_throw_icu_error(err);
for(int i=0;i<n;i++) {
switch(t) {
case word:
if(UBRK_WORD_NONE<=buf[i] && buf[i]<UBRK_WORD_NONE_LIMIT)
indx.back().rule |= word_none;
else if(UBRK_WORD_NUMBER<=buf[i] && buf[i]<UBRK_WORD_NUMBER_LIMIT)
indx.back().rule |= word_number;
else if(UBRK_WORD_LETTER<=buf[i] && buf[i]<UBRK_WORD_LETTER_LIMIT)
indx.back().rule |= word_letter;
else if(UBRK_WORD_KANA<=buf[i] && buf[i]<UBRK_WORD_KANA_LIMIT)
indx.back().rule |= word_kana;
else if(UBRK_WORD_IDEO<=buf[i] && buf[i]<UBRK_WORD_IDEO_LIMIT)
indx.back().rule |= word_ideo;
break;
case line:
if(UBRK_LINE_SOFT<=buf[i] && buf[i]<UBRK_LINE_SOFT_LIMIT)
indx.back().rule |= line_soft;
else if(UBRK_LINE_HARD<=buf[i] && buf[i]<UBRK_LINE_HARD_LIMIT)
indx.back().rule |= line_hard;
break;
case sentence:
if(UBRK_SENTENCE_TERM<=buf[i] && buf[i]<UBRK_SENTENCE_TERM_LIMIT)
indx.back().rule |= sentence_term;
else if(UBRK_SENTENCE_SEP<=buf[i] && buf[i]<UBRK_SENTENCE_SEP_LIMIT)
indx.back().rule |= sentence_sep;
break;
default:
;
}
}
}
else {
indx.back().rule |=character_any; // Baisc mark... for character
}
}
return indx;
}
icu::BreakIterator *get_iterator(boundary_type t,icu::Locale const &loc)
{
UErrorCode err=U_ZERO_ERROR;
hold_ptr<icu::BreakIterator> bi;
switch(t) {
case character:
bi.reset(icu::BreakIterator::createCharacterInstance(loc,err));
break;
case word:
bi.reset(icu::BreakIterator::createWordInstance(loc,err));
break;
case sentence:
bi.reset(icu::BreakIterator::createSentenceInstance(loc,err));
break;
case line:
bi.reset(icu::BreakIterator::createLineInstance(loc,err));
break;
default:
throw std::runtime_error("Invalid iteration type");
}
check_and_throw_icu_error(err);
if(!bi.get())
throw std::runtime_error("Failed to create break iterator");
return bi.release();
}
template<typename CharType>
index_type do_map(boundary_type t,CharType const *begin,CharType const *end,icu::Locale const &loc,std::string const &encoding)
{
index_type indx;
hold_ptr<icu::BreakIterator> bi(get_iterator(t,loc));
#if U_ICU_VERSION_MAJOR_NUM*100 + U_ICU_VERSION_MINOR_NUM >= 306
UErrorCode err=U_ZERO_ERROR;
if(sizeof(CharType) == 2 || (sizeof(CharType)==1 && encoding=="UTF-8"))
{
UText *ut=0;
try {
if(sizeof(CharType)==1)
ut=utext_openUTF8(0,reinterpret_cast<char const *>(begin),end-begin,&err);
else // sizeof(CharType)==2
ut=utext_openUChars(0,reinterpret_cast<UChar const *>(begin),end-begin,&err);
check_and_throw_icu_error(err);
err=U_ZERO_ERROR;
if(!ut) throw std::runtime_error("Failed to create UText");
bi->setText(ut,err);
check_and_throw_icu_error(err);
index_type res=map_direct(t,bi.get(),end-begin);
indx.swap(res);
}
catch(...) {
if(ut)
utext_close(ut);
throw;
}
if(ut) utext_close(ut);
}
else
#endif
{
icu_std_converter<CharType> cvt(encoding);
icu::UnicodeString str=cvt.icu(begin,end);
bi->setText(str);
index_type indirect = map_direct(t,bi.get(),str.length());
indx=indirect;
for(size_t i=1;i<indirect.size();i++) {
size_t offset_inderect=indirect[i-1].offset;
size_t diff = indirect[i].offset - offset_inderect;
size_t offset_direct=indx[i-1].offset;
indx[i].offset=offset_direct + cvt.cut(str,begin,end,diff,offset_inderect,offset_direct);
}
}
return indx;
} // do_map
template<typename CharType>
class boundary_indexing_impl : public boundary_indexing<CharType> {
public:
boundary_indexing_impl(cdata const &data) :
locale_(data.locale),
encoding_(data.encoding)
{
}
index_type map(boundary_type t,CharType const *begin,CharType const *end) const
{
return do_map<CharType>(t,begin,end,locale_,encoding_);
}
private:
icu::Locale locale_;
std::string encoding_;
};
} // impl_icu
} // boundary
namespace impl_icu {
std::locale create_boundary(std::locale const &in,cdata const &cd,character_facet_type type)
{
using namespace boost::locale::boundary::impl_icu;
switch(type) {
case char_facet:
return std::locale(in,new boundary_indexing_impl<char>(cd));
case wchar_t_facet:
return std::locale(in,new boundary_indexing_impl<wchar_t>(cd));
#ifdef BOOST_LOCALE_ENABLE_CHAR16_T
case char16_t_facet:
return std::locale(in,new boundary_indexing_impl<char16_t>(cd));
#endif
#ifdef BOOST_LOCALE_ENABLE_CHAR32_T
case char32_t_facet:
return std::locale(in,new boundary_indexing_impl<char32_t>(cd));
#endif
default:
return in;
}
}
} // impl_icu
} // locale
} // boost
// vim: tabstop=4 expandtab shiftwidth=4 softtabstop=4
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