#include <config.h>
-#include "unicode.h"
+#include "support/unicode.h"
+#include "support/debug.h"
-#include "debug.h"
+#include <QThreadStorage>
#include <iconv.h>
+#include <boost/cstdint.hpp>
+
#include <cerrno>
-#include <iomanip>
#include <map>
+#include <ostream>
+//Needed in MSVC
+#include <string>
+
-using std::endl;
+using namespace std;
namespace {
static const iconv_t invalid_cd = (iconv_t)(-1);
-struct IconvProcessor::Private {
- Private(): cd(invalid_cd) {}
- ~Private()
+class IconvProcessor::Impl
+{
+public:
+ // noncopyable because iconv_close() is called in destructor
+ Impl(Impl const &) = delete;
+ Impl & operator=(Impl const &) = delete;
+
+ Impl(string const & to, string const & from)
+ : cd(invalid_cd), tocode_(to), fromcode_(from)
+ {}
+
+ ~Impl()
{
- if (cd != invalid_cd) {
- if (iconv_close(cd) == -1) {
- lyxerr << "Error returned from iconv_close("
- << errno << ")" << endl;
- }
- }
+ if (cd != invalid_cd && iconv_close(cd) == -1)
+ LYXERR0("Error returned from iconv_close(" << errno << ')');
}
+
iconv_t cd;
+ string tocode_;
+ string fromcode_;
};
-IconvProcessor::IconvProcessor(char const * tocode,
- char const * fromcode): tocode_(tocode), fromcode_(fromcode),
- pimpl_(new IconvProcessor::Private)
+IconvProcessor::IconvProcessor(char const * tocode, char const * fromcode)
+ : pimpl_(new IconvProcessor::Impl(tocode, fromcode))
{
}
IconvProcessor::IconvProcessor(IconvProcessor const & other)
- : tocode_(other.tocode_), fromcode_(other.fromcode_),
- pimpl_(new IconvProcessor::Private)
+ : pimpl_(new IconvProcessor::Impl(other.pimpl_->tocode_, other.pimpl_->fromcode_))
{
}
-IconvProcessor & IconvProcessor::operator=(IconvProcessor const & other)
+IconvProcessor::~IconvProcessor()
{
- if (&other == this)
- return *this;
- tocode_ = other.tocode_;
- fromcode_ = other.fromcode_;
- pimpl_.reset(new Private);
- return *this;
+ delete pimpl_;
}
-IconvProcessor::~IconvProcessor() {}
+IconvProcessor & IconvProcessor::operator=(IconvProcessor const & other)
+{
+ if (&other != this) {
+ delete pimpl_;
+ pimpl_ = new Impl(other.pimpl_->tocode_, other.pimpl_->fromcode_);
+ }
+ return *this;
+}
bool IconvProcessor::init()
if (pimpl_->cd != invalid_cd)
return true;
- pimpl_->cd = iconv_open(tocode_.c_str(), fromcode_.c_str());
+ pimpl_->cd = iconv_open(pimpl_->tocode_.c_str(), pimpl_->fromcode_.c_str());
if (pimpl_->cd != invalid_cd)
return true;
lyxerr << "Error returned from iconv_open" << endl;
switch (errno) {
case EINVAL:
- lyxerr << "EINVAL The conversion from " << fromcode_
- << " to " << tocode_
+ lyxerr << "EINVAL The conversion from " << pimpl_->fromcode_
+ << " to " << pimpl_->tocode_
<< " is not supported by the implementation."
<< endl;
break;
int res = iconv(pimpl_->cd, &inbuf, &inbytesleft, &outbuf, &outbytesleft);
- //lyxerr << std::dec;
+ // flush out remaining data. This is needed because iconv sometimes
+ // holds back chars in the stream, waiting for a combination character
+ // (see e.g. http://sources.redhat.com/bugzilla/show_bug.cgi?id=1124)
+ iconv(pimpl_->cd, NULL, NULL, &outbuf, &outbytesleft);
+
+ //lyxerr << dec;
//lyxerr << "Inbytesleft: " << inbytesleft << endl;
//lyxerr << "Outbytesleft: " << outbytesleft << endl;
case EILSEQ:
lyxerr << "EILSEQ An invalid multibyte sequence"
<< " has been encountered in the input.\n"
- << "When converting from " << fromcode_
- << " to " << tocode_ << ".\n";
- lyxerr << "Input:" << std::hex;
+ << "When converting from " << pimpl_->fromcode_
+ << " to " << pimpl_->tocode_ << ".\n";
+ lyxerr << "Input:" << hex;
for (size_t i = 0; i < buflen; ++i) {
// char may be signed, avoid output of
// something like 0xffffffc2
boost::uint32_t const b =
*reinterpret_cast<unsigned char const *>(buf + i);
- lyxerr << " 0x" << b;
+ lyxerr << " 0x" << (unsigned int)b;
}
- lyxerr << std::dec << endl;
+ lyxerr << dec << endl;
break;
case EINVAL:
lyxerr << "EINVAL An incomplete multibyte sequence"
<< " has been encountered in the input.\n"
- << "When converting from " << fromcode_
- << " to " << tocode_ << ".\n";
- lyxerr << "Input:" << std::hex;
+ << "When converting from " << pimpl_->fromcode_
+ << " to " << pimpl_->tocode_ << ".\n";
+ lyxerr << "Input:" << hex;
for (size_t i = 0; i < buflen; ++i) {
// char may be signed, avoid output of
// something like 0xffffffc2
boost::uint32_t const b =
*reinterpret_cast<unsigned char const *>(buf + i);
- lyxerr << " 0x" << b;
+ lyxerr << " 0x" << (unsigned int)b;
}
- lyxerr << std::dec << endl;
+ lyxerr << dec << endl;
break;
default:
lyxerr << "\tSome other error: " << errno << endl;
}
+std::string IconvProcessor::from() const
+{
+ return pimpl_->fromcode_;
+}
+
+
+std::string IconvProcessor::to() const
+{
+ return pimpl_->tocode_;
+}
+
+
namespace {
template<typename RetType, typename InType>
-std::vector<RetType>
-iconv_convert(IconvProcessor & processor,
- InType const * buf,
- size_t buflen)
+vector<RetType>
+iconv_convert(IconvProcessor & processor, InType const * buf, size_t buflen)
{
if (buflen == 0)
- return std::vector<RetType>();
+ return vector<RetType>();
char const * inbuf = reinterpret_cast<char const *>(buf);
size_t inbytesleft = buflen * sizeof(InType);
- size_t const outsize = 32768;
- static char out[outsize];
- char * outbuf = out;
-
- int bytes = processor.convert(inbuf, inbytesleft, outbuf, outsize);
+ static QThreadStorage<std::vector<char> *> static_outbuf;
+ if (!static_outbuf.hasLocalData())
+ static_outbuf.setLocalData(new std::vector<char>(32768));
+ std::vector<char> & outbuf = *static_outbuf.localData();
+ // The number of UCS4 code points in buf is at most inbytesleft.
+ // The output encoding will use at most
+ // max_encoded_bytes(pimpl_->tocode_) per UCS4 code point.
+ size_t maxoutbufsize = max_encoded_bytes(processor.to()) * inbytesleft;
+ if (outbuf.size() < maxoutbufsize)
+ outbuf.resize(maxoutbufsize);
+
+ int bytes = processor.convert(inbuf, inbytesleft, &outbuf[0], outbuf.size());
if (bytes <= 0)
// Conversion failed
// FIXME Maybe throw an exception and handle that in the caller?
- return std::vector<RetType>();
+ return vector<RetType>();
- RetType const * tmp = reinterpret_cast<RetType const *>(out);
- return std::vector<RetType>(tmp, tmp + bytes / sizeof(RetType));
+ RetType const * tmp = reinterpret_cast<RetType const *>(&outbuf[0]);
+ return vector<RetType>(tmp, tmp + bytes / sizeof(RetType));
}
} // anon namespace
-std::vector<lyx::char_type> utf8_to_ucs4(std::vector<char> const & utf8str)
+IconvProcessor & utf8ToUcs4()
+{
+ static QThreadStorage<IconvProcessor *> processor;
+ if (!processor.hasLocalData())
+ processor.setLocalData(new IconvProcessor(ucs4_codeset, "UTF-8"));
+ return *processor.localData();
+}
+
+
+vector<char_type> utf8_to_ucs4(vector<char> const & utf8str)
{
if (utf8str.empty())
- return std::vector<lyx::char_type>();
+ return vector<char_type>();
return utf8_to_ucs4(&utf8str[0], utf8str.size());
}
-std::vector<lyx::char_type>
+vector<char_type>
utf8_to_ucs4(char const * utf8str, size_t ls)
{
- static IconvProcessor processor(ucs4_codeset, "UTF-8");
- return iconv_convert<lyx::char_type>(processor, utf8str, ls);
+ return iconv_convert<char_type>(utf8ToUcs4(), utf8str, ls);
}
-std::vector<char_type>
+vector<char_type>
utf16_to_ucs4(unsigned short const * s, size_t ls)
{
- static IconvProcessor processor(ucs4_codeset, utf16_codeset);
- return iconv_convert<char_type>(processor, s, ls);
+ static QThreadStorage<IconvProcessor *> processor;
+ if (!processor.hasLocalData())
+ processor.setLocalData(new IconvProcessor(ucs4_codeset, utf16_codeset));
+ return iconv_convert<char_type>(*processor.localData(), s, ls);
}
-std::vector<unsigned short>
+vector<unsigned short>
ucs4_to_utf16(char_type const * s, size_t ls)
{
- static IconvProcessor processor(utf16_codeset, ucs4_codeset);
- return iconv_convert<unsigned short>(processor, s, ls);
+ static QThreadStorage<IconvProcessor *> processor;
+ if (!processor.hasLocalData())
+ processor.setLocalData(new IconvProcessor(utf16_codeset, ucs4_codeset));
+ return iconv_convert<unsigned short>(*processor.localData(), s, ls);
}
-std::vector<char>
-ucs4_to_utf8(lyx::char_type c)
+IconvProcessor & ucs4ToUtf8()
{
- static IconvProcessor processor("UTF-8", ucs4_codeset);
- return iconv_convert<char>(processor, &c, 1);
+ static QThreadStorage<IconvProcessor *> processor;
+ if (!processor.hasLocalData())
+ processor.setLocalData(new IconvProcessor("UTF-8", ucs4_codeset));
+ return *processor.localData();
}
-std::vector<char>
-ucs4_to_utf8(std::vector<lyx::char_type> const & ucs4str)
+vector<char>
+ucs4_to_utf8(char_type c)
+{
+ return iconv_convert<char>(ucs4ToUtf8(), &c, 1);
+}
+
+
+vector<char>
+ucs4_to_utf8(vector<char_type> const & ucs4str)
{
if (ucs4str.empty())
- return std::vector<char>();
+ return vector<char>();
return ucs4_to_utf8(&ucs4str[0], ucs4str.size());
}
-std::vector<char>
-ucs4_to_utf8(lyx::char_type const * ucs4str, size_t ls)
+vector<char>
+ucs4_to_utf8(char_type const * ucs4str, size_t ls)
{
- static IconvProcessor processor("UTF-8", ucs4_codeset);
- return iconv_convert<char>(processor, ucs4str, ls);
+ return iconv_convert<char>(ucs4ToUtf8(), ucs4str, ls);
}
-std::vector<lyx::char_type>
-eightbit_to_ucs4(char const * s, size_t ls, std::string const & encoding)
+vector<char_type>
+eightbit_to_ucs4(char const * s, size_t ls, string const & encoding)
{
- static std::map<std::string, IconvProcessor> processors;
+ static QThreadStorage<map<string, IconvProcessor> *> static_processors;
+ if (!static_processors.hasLocalData())
+ static_processors.setLocalData(new map<string, IconvProcessor>);
+ map<string, IconvProcessor> & processors = *static_processors.localData();
if (processors.find(encoding) == processors.end()) {
IconvProcessor processor(ucs4_codeset, encoding.c_str());
- processors.insert(std::make_pair(encoding, processor));
+ processors.insert(make_pair(encoding, processor));
}
return iconv_convert<char_type>(processors[encoding], s, ls);
}
-std::vector<char>
-ucs4_to_eightbit(lyx::char_type const * ucs4str, size_t ls, std::string const & encoding)
+namespace {
+
+map<string, IconvProcessor> & ucs4To8bitProcessors()
+{
+ static QThreadStorage<map<string, IconvProcessor> *> processors;
+ if (!processors.hasLocalData())
+ processors.setLocalData(new map<string, IconvProcessor>);
+ return *processors.localData();
+}
+
+}
+
+
+vector<char>
+ucs4_to_eightbit(char_type const * ucs4str, size_t ls, string const & encoding)
{
- static std::map<std::string, IconvProcessor> processors;
+ map<string, IconvProcessor> & processors(ucs4To8bitProcessors());
if (processors.find(encoding) == processors.end()) {
IconvProcessor processor(encoding.c_str(), ucs4_codeset);
- processors.insert(std::make_pair(encoding, processor));
+ processors.insert(make_pair(encoding, processor));
}
return iconv_convert<char>(processors[encoding], ucs4str, ls);
}
+
+char ucs4_to_eightbit(char_type ucs4, string const & encoding)
+{
+ map<string, IconvProcessor> & processors(ucs4To8bitProcessors());
+ map<string, IconvProcessor>::iterator it = processors.find(encoding);
+ if (it == processors.end()) {
+ IconvProcessor processor(encoding.c_str(), ucs4_codeset);
+ it = processors.insert(make_pair(encoding, processor)).first;
+ }
+
+ char out;
+ int const bytes = it->second.convert((char *)(&ucs4), 4, &out, 1);
+ if (bytes > 0)
+ return out;
+ return 0;
+}
+
+
+void ucs4_to_multibytes(char_type ucs4, vector<char> & out,
+ string const & encoding)
+{
+ static QThreadStorage<map<string, IconvProcessor> *> static_processors;
+ if (!static_processors.hasLocalData())
+ static_processors.setLocalData(new map<string, IconvProcessor>);
+ map<string, IconvProcessor> & processors = *static_processors.localData();
+ map<string, IconvProcessor>::iterator it = processors.find(encoding);
+ if (it == processors.end()) {
+ IconvProcessor processor(encoding.c_str(), ucs4_codeset);
+ it = processors.insert(make_pair(encoding, processor)).first;
+ }
+
+ out.resize(4);
+ int bytes = it->second.convert((char *)(&ucs4), 4, &out[0], 4);
+ if (bytes > 0)
+ out.resize(bytes);
+ else
+ out.clear();
+}
+
+int max_encoded_bytes(std::string const & encoding)
+{
+ // FIXME: this information should be transferred to lib/encodings
+ // UTF8 uses at most 4 bytes to represent one UCS4 code point
+ // (see RFC 3629). RFC 2279 specifies 6 bytes, but that
+ // information is outdated, and RFC 2279 has been superseded by
+ // RFC 3629.
+ // The CJK encodings use (different) multibyte representation as well.
+ // All other encodings encode one UCS4 code point in one byte
+ // (and can therefore only encode a subset of UCS4)
+ // Furthermore, all encodings that use shifting (like SJIS) do not work with
+ // iconv_codecvt_facet.
+ if (encoding == "UTF-8" ||
+ encoding == "GB" ||
+ encoding == "EUC-TW")
+ return 4;
+ else if (encoding == "EUC-JP")
+ return 3;
+ else if (encoding == "ISO-2022-JP")
+ return 8;
+ else if (encoding == "BIG5" ||
+ encoding == "EUC-KR" ||
+ encoding == "EUC-CN" ||
+ encoding == "SJIS" ||
+ encoding == "GBK")
+ return 2;
+ else
+ return 1;
+}
+
} // namespace lyx
projects / lyx.git / blobdiff