X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/cdb14ecbe7fdf65f6c2dfd4b98526feb7813ddf9..34eeb223b428c2e9ec90d88348e7e62dfeb1cb65:/src/common/strconv.cpp diff --git a/src/common/strconv.cpp b/src/common/strconv.cpp index 4741650e15..95ef424042 100644 --- a/src/common/strconv.cpp +++ b/src/common/strconv.cpp @@ -1,5 +1,5 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: strconv.cpp +// Name: src/common/strconv.cpp // Purpose: Unicode conversion classes // Author: Ove Kaaven, Robert Roebling, Vadim Zeitlin, Vaclav Slavik, // Ryan Norton, Fredrik Roubert (UTF7) @@ -12,40 +12,25 @@ // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// -// ============================================================================ -// declarations -// ============================================================================ - -// ---------------------------------------------------------------------------- -// headers -// ---------------------------------------------------------------------------- - -#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) - #pragma implementation "strconv.h" -#endif - // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" -#ifdef __BORLANDC__ - #pragma hdrstop -#endif - #ifndef WX_PRECOMP + #ifdef __WXMSW__ + #include "wx/msw/missing.h" + #endif #include "wx/intl.h" #include "wx/log.h" -#endif // WX_PRECOMP + #include "wx/utils.h" + #include "wx/hashmap.h" +#endif #include "wx/strconv.h" #if wxUSE_WCHAR_T -#ifdef __WXMSW__ - #include "wx/msw/private.h" -#endif - #ifdef __WINDOWS__ - #include "wx/msw/missing.h" + #include "wx/msw/private.h" #endif #ifndef __WXWINCE__ @@ -58,11 +43,7 @@ #if defined(__WIN32__) && !defined(__WXMICROWIN__) #define wxHAVE_WIN32_MB2WC -#endif // __WIN32__ but !__WXMICROWIN__ - -// ---------------------------------------------------------------------------- -// headers -// ---------------------------------------------------------------------------- +#endif #ifdef __SALFORDC__ #include @@ -75,87 +56,81 @@ #include "wx/encconv.h" #include "wx/fontmap.h" -#include "wx/utils.h" #ifdef __WXMAC__ +#ifndef __DARWIN__ #include #include #include +#endif -#include "wx/mac/private.h" // includes mac headers +// includes Mac headers +#include "wx/mac/private.h" #endif -// ---------------------------------------------------------------------------- -// macros -// ---------------------------------------------------------------------------- -#define BSWAP_UCS4(str, len) { unsigned _c; for (_c=0; _c=0x110000) + else if (input >= 0x110000) { - return (size_t)-1; + return wxCONV_FAILED; } else { if (output) { - *output++ = (wxUint16) ((input >> 10)+0xd7c0); - *output = (wxUint16) ((input&0x3ff)+0xdc00); + *output++ = (wxUint16) ((input >> 10) + 0xd7c0); + *output = (wxUint16) ((input & 0x3ff) + 0xdc00); } + return 2; } } static size_t decode_utf16(const wxUint16* input, wxUint32& output) { - if ((*input<0xd800) || (*input>0xdfff)) + if ((*input < 0xd800) || (*input > 0xdfff)) { output = *input; return 1; } - else if ((input[1]<0xdc00) || (input[1]>0xdfff)) + else if ((input[1] < 0xdc00) || (input[1] > 0xdfff)) { output = *input; - return (size_t)-1; + return wxCONV_FAILED; } else { @@ -164,183 +139,322 @@ static size_t decode_utf16(const wxUint16* input, wxUint32& output) } } +#ifdef WC_UTF16 + typedef wchar_t wxDecodeSurrogate_t; +#else // !WC_UTF16 + typedef wxUint16 wxDecodeSurrogate_t; +#endif // WC_UTF16/!WC_UTF16 + +// returns the next UTF-32 character from the wchar_t buffer and advances the +// pointer to the character after this one +// +// if an invalid character is found, *pSrc is set to NULL, the caller must +// check for this +static wxUint32 wxDecodeSurrogate(const wxDecodeSurrogate_t **pSrc) +{ + wxUint32 out; + const size_t + n = decode_utf16(wx_reinterpret_cast(const wxUint16 *, *pSrc), out); + if ( n == wxCONV_FAILED ) + *pSrc = NULL; + else + *pSrc += n; + + return out; +} // ---------------------------------------------------------------------------- // wxMBConv // ---------------------------------------------------------------------------- -wxMBConv::~wxMBConv() +size_t +wxMBConv::ToWChar(wchar_t *dst, size_t dstLen, + const char *src, size_t srcLen) const { - // nothing to do here (necessary for Darwin linking probably) -} + // although new conversion classes are supposed to implement this function + // directly, the existins ones only implement the old MB2WC() and so, to + // avoid to have to rewrite all conversion classes at once, we provide a + // default (but not efficient) implementation of this one in terms of the + // old function by copying the input to ensure that it's NUL-terminated and + // then using MB2WC() to convert it + + // the number of chars [which would be] written to dst [if it were not NULL] + size_t dstWritten = 0; + + // the number of NULs terminating this string + size_t nulLen = 0; // not really needed, but just to avoid warnings + + // if we were not given the input size we just have to assume that the + // string is properly terminated as we have no way of knowing how long it + // is anyhow, but if we do have the size check whether there are enough + // NULs at the end + wxCharBuffer bufTmp; + const char *srcEnd; + if ( srcLen != wxNO_LEN ) + { + // we need to know how to find the end of this string + nulLen = GetMBNulLen(); + if ( nulLen == wxCONV_FAILED ) + return wxCONV_FAILED; + + // if there are enough NULs we can avoid the copy + if ( srcLen < nulLen || NotAllNULs(src + srcLen - nulLen, nulLen) ) + { + // make a copy in order to properly NUL-terminate the string + bufTmp = wxCharBuffer(srcLen + nulLen - 1 /* 1 will be added */); + char * const p = bufTmp.data(); + memcpy(p, src, srcLen); + for ( char *s = p + srcLen; s < p + srcLen + nulLen; s++ ) + *s = '\0'; + + src = bufTmp; + } -const wxWCharBuffer wxMBConv::cMB2WC(const char *psz) const -{ - if ( psz ) + srcEnd = src + srcLen; + } + else // quit after the first loop iteration { - // calculate the length of the buffer needed first - size_t nLen = MB2WC(NULL, psz, 0); - if ( nLen != (size_t)-1 ) + srcEnd = NULL; + } + + for ( ;; ) + { + // try to convert the current chunk + size_t lenChunk = MB2WC(NULL, src, 0); + if ( lenChunk == wxCONV_FAILED ) + return wxCONV_FAILED; + + lenChunk++; // for the L'\0' at the end of this chunk + + dstWritten += lenChunk; + + if ( lenChunk == 1 ) { - // now do the actual conversion - wxWCharBuffer buf(nLen); - nLen = MB2WC(buf.data(), psz, nLen + 1); // with the trailing NULL - if ( nLen != (size_t)-1 ) - { - return buf; - } + // nothing left in the input string, conversion succeeded + break; } - } - wxWCharBuffer buf((wchar_t *)NULL); + if ( dst ) + { + if ( dstWritten > dstLen ) + return wxCONV_FAILED; - return buf; -} + if ( MB2WC(dst, src, lenChunk) == wxCONV_FAILED ) + return wxCONV_FAILED; -const wxCharBuffer wxMBConv::cWC2MB(const wchar_t *pwz) const -{ - if ( pwz ) - { - size_t nLen = WC2MB(NULL, pwz, 0); - if ( nLen != (size_t)-1 ) + dst += lenChunk; + } + + if ( !srcEnd ) { - wxCharBuffer buf(nLen+3); // space for a wxUint32 trailing zero - nLen = WC2MB(buf.data(), pwz, nLen + 4); - if ( nLen != (size_t)-1 ) - { - return buf; - } + // we convert just one chunk in this case as this is the entire + // string anyhow + break; } - } - wxCharBuffer buf((char *)NULL); + // advance the input pointer past the end of this chunk + while ( NotAllNULs(src, nulLen) ) + { + // notice that we must skip over multiple bytes here as we suppose + // that if NUL takes 2 or 4 bytes, then all the other characters do + // too and so if advanced by a single byte we might erroneously + // detect sequences of NUL bytes in the middle of the input + src += nulLen; + } - return buf; -} + src += nulLen; // skipping over its terminator as well -const wxWCharBuffer wxMBConv::cMB2WC(const char *szString, size_t nStringLen, size_t* pOutSize) const -{ - wxASSERT(pOutSize != NULL); + // note that ">=" (and not just "==") is needed here as the terminator + // we skipped just above could be inside or just after the buffer + // delimited by inEnd + if ( src >= srcEnd ) + break; + } - const char* szEnd = szString + nStringLen + 1; - const char* szPos = szString; - const char* szStart = szPos; + return dstWritten; +} - size_t nActualLength = 0; - size_t nCurrentSize = nStringLen; //try normal size first (should never resize?) +size_t +wxMBConv::FromWChar(char *dst, size_t dstLen, + const wchar_t *src, size_t srcLen) const +{ + // the number of chars [which would be] written to dst [if it were not NULL] + size_t dstWritten = 0; - wxWCharBuffer theBuffer(nCurrentSize); + // make a copy of the input string unless it is already properly + // NUL-terminated + // + // if we don't know its length we have no choice but to assume that it is, + // indeed, properly terminated + wxWCharBuffer bufTmp; + if ( srcLen == wxNO_LEN ) + { + srcLen = wxWcslen(src) + 1; + } + else if ( srcLen != 0 && src[srcLen - 1] != L'\0' ) + { + // make a copy in order to properly NUL-terminate the string + bufTmp = wxWCharBuffer(srcLen); + memcpy(bufTmp.data(), src, srcLen * sizeof(wchar_t)); + src = bufTmp; + } - //Convert the string until the length() is reached, continuing the - //loop every time a null character is reached - while(szPos != szEnd) + const size_t lenNul = GetMBNulLen(); + for ( const wchar_t * const srcEnd = src + srcLen; + src < srcEnd; + src += wxWcslen(src) + 1 /* skip L'\0' too */ ) { - wxASSERT(szPos < szEnd); //something is _really_ screwed up if this rings true + // try to convert the current chunk + size_t lenChunk = WC2MB(NULL, src, 0); - //Get the length of the current (sub)string - size_t nLen = MB2WC(NULL, szPos, 0); + if ( lenChunk == wxCONV_FAILED ) + return wxCONV_FAILED; - //Invalid conversion? - if( nLen == (size_t)-1 ) - { - *pOutSize = 0; - theBuffer.data()[0u] = wxT('\0'); - return theBuffer; - } + lenChunk += lenNul; + dstWritten += lenChunk; + if ( dst ) + { + if ( dstWritten > dstLen ) + return wxCONV_FAILED; - //Increase the actual length (+1 for current null character) - nActualLength += nLen + 1; + if ( WC2MB(dst, src, lenChunk) == wxCONV_FAILED ) + return wxCONV_FAILED; - //if buffer too big, realloc the buffer - if (nActualLength > (nCurrentSize+1)) - { - wxWCharBuffer theNewBuffer(nCurrentSize << 1); - memcpy(theNewBuffer.data(), theBuffer.data(), nCurrentSize * sizeof(wchar_t)); - theBuffer = theNewBuffer; - nCurrentSize <<= 1; + dst += lenChunk; } + } - //Convert the current (sub)string - if ( MB2WC(&theBuffer.data()[szPos - szStart], szPos, nLen + 1) == (size_t)-1 ) - { - *pOutSize = 0; - theBuffer.data()[0u] = wxT('\0'); - return theBuffer; - } + return dstWritten; +} - //Increment to next (sub)string - //Note that we have to use strlen here instead of nLen - //here because XX2XX gives us the size of the output buffer, - //not neccessarly the length of the string - szPos += strlen(szPos) + 1; +size_t wxMBConv::MB2WC(wchar_t *outBuff, const char *inBuff, size_t outLen) const +{ + size_t rc = ToWChar(outBuff, outLen, inBuff); + if ( rc != wxCONV_FAILED ) + { + // ToWChar() returns the buffer length, i.e. including the trailing + // NUL, while this method doesn't take it into account + rc--; } - //success - return actual length and the buffer - *pOutSize = nActualLength; - return theBuffer; + return rc; } -const wxCharBuffer wxMBConv::cWC2MB(const wchar_t *szString, size_t nStringLen, size_t* pOutSize) const +size_t wxMBConv::WC2MB(char *outBuff, const wchar_t *inBuff, size_t outLen) const { - wxASSERT(pOutSize != NULL); - - const wchar_t* szEnd = szString + nStringLen + 1; - const wchar_t* szPos = szString; - const wchar_t* szStart = szPos; + size_t rc = FromWChar(outBuff, outLen, inBuff); + if ( rc != wxCONV_FAILED ) + { + rc -= GetMBNulLen(); + } - size_t nActualLength = 0; - size_t nCurrentSize = nStringLen << 2; //try * 4 first + return rc; +} - wxCharBuffer theBuffer(nCurrentSize); +wxMBConv::~wxMBConv() +{ + // nothing to do here (necessary for Darwin linking probably) +} - //Convert the string until the length() is reached, continuing the - //loop every time a null character is reached - while(szPos != szEnd) +const wxWCharBuffer wxMBConv::cMB2WC(const char *psz) const +{ + if ( psz ) { - wxASSERT(szPos < szEnd); //something is _really_ screwed up if this rings true + // calculate the length of the buffer needed first + const size_t nLen = MB2WC(NULL, psz, 0); + if ( nLen != wxCONV_FAILED ) + { + // now do the actual conversion + wxWCharBuffer buf(nLen /* +1 added implicitly */); - //Get the length of the current (sub)string - size_t nLen = WC2MB(NULL, szPos, 0); + // +1 for the trailing NULL + if ( MB2WC(buf.data(), psz, nLen + 1) != wxCONV_FAILED ) + return buf; + } + } + + return wxWCharBuffer(); +} - //Invalid conversion? - if( nLen == (size_t)-1 ) +const wxCharBuffer wxMBConv::cWC2MB(const wchar_t *pwz) const +{ + if ( pwz ) + { + const size_t nLen = WC2MB(NULL, pwz, 0); + if ( nLen != wxCONV_FAILED ) { - *pOutSize = 0; - theBuffer.data()[0u] = wxT('\0'); - return theBuffer; + // extra space for trailing NUL(s) + static const size_t extraLen = GetMaxMBNulLen(); + + wxCharBuffer buf(nLen + extraLen - 1); + if ( WC2MB(buf.data(), pwz, nLen + extraLen) != wxCONV_FAILED ) + return buf; } + } - //Increase the actual length (+1 for current null character) - nActualLength += nLen + 1; + return wxCharBuffer(); +} - //if buffer too big, realloc the buffer - if (nActualLength > (nCurrentSize+1)) +const wxWCharBuffer +wxMBConv::cMB2WC(const char *inBuff, size_t inLen, size_t *outLen) const +{ + const size_t dstLen = ToWChar(NULL, 0, inBuff, inLen); + if ( dstLen != wxCONV_FAILED ) + { + wxWCharBuffer wbuf(dstLen - 1); + if ( ToWChar(wbuf.data(), dstLen, inBuff, inLen) != wxCONV_FAILED ) { - wxCharBuffer theNewBuffer(nCurrentSize << 1); - memcpy(theNewBuffer.data(), theBuffer.data(), nCurrentSize); - theBuffer = theNewBuffer; - nCurrentSize <<= 1; + if ( outLen ) + { + *outLen = dstLen; + if ( wbuf[dstLen - 1] == L'\0' ) + (*outLen)--; + } + + return wbuf; } + } - //Convert the current (sub)string - if(WC2MB(&theBuffer.data()[szPos - szStart], szPos, nLen + 1) == (size_t)-1 ) + if ( outLen ) + *outLen = 0; + + return wxWCharBuffer(); +} + +const wxCharBuffer +wxMBConv::cWC2MB(const wchar_t *inBuff, size_t inLen, size_t *outLen) const +{ + size_t dstLen = FromWChar(NULL, 0, inBuff, inLen); + if ( dstLen != wxCONV_FAILED ) + { + // special case of empty input: can't allocate 0 size buffer below as + // wxCharBuffer insists on NUL-terminating it + wxCharBuffer buf(dstLen ? dstLen - 1 : 1); + if ( FromWChar(buf.data(), dstLen, inBuff, inLen) != wxCONV_FAILED ) { - *pOutSize = 0; - theBuffer.data()[0u] = wxT('\0'); - return theBuffer; - } + if ( outLen ) + { + *outLen = dstLen; - //Increment to next (sub)string - //Note that we have to use wxWcslen here instead of nLen - //here because XX2XX gives us the size of the output buffer, - //not neccessarly the length of the string - szPos += wxWcslen(szPos) + 1; + const size_t nulLen = GetMBNulLen(); + if ( dstLen >= nulLen && + !NotAllNULs(buf.data() + dstLen - nulLen, nulLen) ) + { + // in this case the output is NUL-terminated and we're not + // supposed to count NUL + *outLen -= nulLen; + } + } + + return buf; + } } - //success - return actual length and the buffer - *pOutSize = nActualLength; - return theBuffer; + if ( outLen ) + *outLen = 0; + + return wxCharBuffer(); } // ---------------------------------------------------------------------------- @@ -357,59 +471,22 @@ size_t wxMBConvLibc::WC2MB(char *buf, const wchar_t *psz, size_t n) const return wxWC2MB(buf, psz, n); } -#ifdef __UNIX__ - // ---------------------------------------------------------------------------- -// wxConvBrokenFileNames +// wxConvBrokenFileNames // ---------------------------------------------------------------------------- -wxConvBrokenFileNames::wxConvBrokenFileNames() -{ - // decide which conversion to use for the file names - - // (1) this variable exists for the sole purpose of specifying the encoding - // of the filenames for GTK+ programs, so use it if it is set - const wxChar *encName = wxGetenv(_T("G_FILENAME_ENCODING")); - if ( encName ) - { - m_conv = new wxCSConv(encName); - } - else // no G_FILENAME_ENCODING - { - // (2) if a non default locale is set, assume that the user wants his - // filenames in this locale too - switch ( wxLocale::GetSystemEncoding() ) - { - default: - m_conv = new wxMBConvLibc; - break; - - // (3) finally use UTF-8 by default - case wxFONTENCODING_SYSTEM: - case wxFONTENCODING_UTF8: - m_conv = new wxMBConvUTF8(wxMBConvUTF8::MAP_INVALID_UTF8_TO_OCTAL); - break; - } - } -} +#ifdef __UNIX__ -size_t -wxConvBrokenFileNames::MB2WC(wchar_t *outputBuf, - const char *psz, - size_t outputSize) const +wxConvBrokenFileNames::wxConvBrokenFileNames(const wxChar *charset) { - return m_conv->MB2WC( outputBuf, psz, outputSize ); + if ( !charset || wxStricmp(charset, _T("UTF-8")) == 0 + || wxStricmp(charset, _T("UTF8")) == 0 ) + m_conv = new wxMBConvUTF8(wxMBConvUTF8::MAP_INVALID_UTF8_TO_OCTAL); + else + m_conv = new wxCSConv(charset); } -size_t -wxConvBrokenFileNames::WC2MB(char *outputBuf, - const wchar_t *psz, - size_t outputSize) const -{ - return m_conv->WC2MB( outputBuf, psz, outputSize ); -} - -#endif +#endif // __UNIX__ // ---------------------------------------------------------------------------- // UTF-7 @@ -460,7 +537,7 @@ size_t wxMBConvUTF7::MB2WC(wchar_t *buf, const char *psz, size_t n) const { size_t len = 0; - while (*psz && ((!buf) || (len < n))) + while ( *psz && (!buf || (len < n)) ) { unsigned char cc = *psz++; if (cc != '+') @@ -478,20 +555,19 @@ size_t wxMBConvUTF7::MB2WC(wchar_t *buf, const char *psz, size_t n) const len++; psz++; } - else + else // start of BASE64 encoded string { - // BASE64 encoded string - bool lsb; - unsigned char c; + bool lsb, ok; unsigned int d, l; - for (lsb = false, d = 0, l = 0; - (cc = utf7unb64[(unsigned char)*psz]) != 0xff; psz++) + for ( ok = lsb = false, d = 0, l = 0; + (cc = utf7unb64[(unsigned char)*psz]) != 0xff; + psz++ ) { d <<= 6; d += cc; for (l += 6; l >= 8; lsb = !lsb) { - c = (unsigned char)((d >> (l -= 8)) % 256); + unsigned char c = (unsigned char)((d >> (l -= 8)) % 256); if (lsb) { if (buf) @@ -499,16 +575,29 @@ size_t wxMBConvUTF7::MB2WC(wchar_t *buf, const char *psz, size_t n) const len ++; } else + { if (buf) *buf = (wchar_t)(c << 8); + } + + ok = true; } } + + if ( !ok ) + { + // in valid UTF7 we should have valid characters after '+' + return wxCONV_FAILED; + } + if (*psz == '-') psz++; } } - if (buf && (len < n)) - *buf = 0; + + if ( buf && (len < n) ) + *buf = '\0'; + return len; } @@ -549,8 +638,6 @@ static const unsigned char utf7encode[128] = size_t wxMBConvUTF7::WC2MB(char *buf, const wchar_t *psz, size_t n) const { - - size_t len = 0; while (*psz && ((!buf) || (len < n))) @@ -561,25 +648,27 @@ size_t wxMBConvUTF7::WC2MB(char *buf, const wchar_t *psz, size_t n) const // plain ASCII char if (buf) *buf++ = (char)cc; + len++; } #ifndef WC_UTF16 else if (((wxUint32)cc) > 0xffff) { // no surrogate pair generation (yet?) - return (size_t)-1; + return wxCONV_FAILED; } #endif else { if (buf) *buf++ = '+'; + len++; if (cc != '+') { // BASE64 encode string unsigned int lsb, d, l; - for (d = 0, l = 0;; psz++) + for (d = 0, l = 0; /*nothing*/; psz++) { for (lsb = 0; lsb < 2; lsb ++) { @@ -594,24 +683,30 @@ size_t wxMBConvUTF7::WC2MB(char *buf, const wchar_t *psz, size_t n) const len++; } } + cc = *psz; if (!(cc) || (cc < 0x80 && utf7encode[cc] < 1)) break; } + if (l != 0) { if (buf) *buf++ = utf7enb64[((d % 16) << (6 - l)) % 64]; + len++; } } + if (buf) *buf++ = '-'; len++; } } + if (buf && (len < n)) *buf = 0; + return len; } @@ -639,12 +734,22 @@ size_t wxMBConvUTF8::MB2WC(wchar_t *buf, const char *psz, size_t n) const unsigned cnt; for (cnt = 0; fc & 0x80; cnt++) fc <<= 1; + if (!cnt) { // plain ASCII char if (buf) *buf++ = cc; len++; + + // escape the escape character for octal escapes + if ((m_options & MAP_INVALID_UTF8_TO_OCTAL) + && cc == '\\' && (!buf || len < n)) + { + if (buf) + *buf++ = cc; + len++; + } } else { @@ -667,9 +772,11 @@ size_t wxMBConvUTF8::MB2WC(wchar_t *buf, const char *psz, size_t n) const invalid = true; break; } + psz++; res = (res << 6) | (cc & 0x3f); } + if (invalid || res <= utf8_max[ocnt]) { // illegal UTF-8 encoding @@ -688,7 +795,7 @@ size_t wxMBConvUTF8::MB2WC(wchar_t *buf, const char *psz, size_t n) const #ifdef WC_UTF16 // cast is ok because wchar_t == wxUuint16 if WC_UTF16 size_t pa = encode_utf16(res, (wxUint16 *)buf); - if (pa == (size_t)-1) + if (pa == wxCONV_FAILED) { invalid = true; } @@ -700,11 +807,12 @@ size_t wxMBConvUTF8::MB2WC(wchar_t *buf, const char *psz, size_t n) const } #else // !WC_UTF16 if (buf) - *buf++ = res; + *buf++ = (wchar_t)res; len++; #endif // WC_UTF16/!WC_UTF16 } } + if (invalid) { if (m_options & MAP_INVALID_UTF8_TO_PUA) @@ -714,14 +822,14 @@ size_t wxMBConvUTF8::MB2WC(wchar_t *buf, const char *psz, size_t n) const #ifdef WC_UTF16 // cast is ok because wchar_t == wxUuint16 if WC_UTF16 size_t pa = encode_utf16((unsigned char)*opsz + wxUnicodePUA, (wxUint16 *)buf); - wxASSERT(pa != (size_t)-1); + wxASSERT(pa != wxCONV_FAILED); if (buf) buf += pa; opsz++; len += pa; #else if (buf) - *buf++ = wxUnicodePUA + (unsigned char)*opsz; + *buf++ = (wchar_t)(wxUnicodePUA + (unsigned char)*opsz); opsz++; len++; #endif @@ -733,25 +841,28 @@ size_t wxMBConvUTF8::MB2WC(wchar_t *buf, const char *psz, size_t n) const { if ( buf && len + 3 < n ) { - unsigned char n = *opsz; + unsigned char on = *opsz; *buf++ = L'\\'; - *buf++ = (wchar_t)( L'0' + n / 0100 ); - *buf++ = (wchar_t)( L'0' + (n % 0100) / 010 ); - *buf++ = (wchar_t)( L'0' + n % 010 ); + *buf++ = (wchar_t)( L'0' + on / 0100 ); + *buf++ = (wchar_t)( L'0' + (on % 0100) / 010 ); + *buf++ = (wchar_t)( L'0' + on % 010 ); } + opsz++; len += 4; } } else // MAP_INVALID_UTF8_NOT { - return (size_t)-1; + return wxCONV_FAILED; } } } } + if (buf && (len < n)) *buf = 0; + return len; } @@ -767,12 +878,13 @@ size_t wxMBConvUTF8::WC2MB(char *buf, const wchar_t *psz, size_t n) const while (*psz && ((!buf) || (len < n))) { wxUint32 cc; + #ifdef WC_UTF16 // cast is ok for WC_UTF16 size_t pa = decode_utf16((const wxUint16 *)psz, cc); - psz += (pa == (size_t)-1) ? 1 : pa; + psz += (pa == wxCONV_FAILED) ? 1 : pa; #else - cc=(*psz++) & 0x7fffffff; + cc = (*psz++) & 0x7fffffff; #endif if ( (m_options & MAP_INVALID_UTF8_TO_PUA) @@ -782,14 +894,22 @@ size_t wxMBConvUTF8::WC2MB(char *buf, const wchar_t *psz, size_t n) const *buf++ = (char)(cc - wxUnicodePUA); len++; } + else if ( (m_options & MAP_INVALID_UTF8_TO_OCTAL) + && cc == L'\\' && psz[0] == L'\\' ) + { + if (buf) + *buf++ = (char)cc; + psz++; + len++; + } else if ( (m_options & MAP_INVALID_UTF8_TO_OCTAL) && cc == L'\\' && isoctal(psz[0]) && isoctal(psz[1]) && isoctal(psz[2]) ) { if (buf) { - *buf++ = (char) ((psz[0] - L'0')*0100 + - (psz[1] - L'0')*010 + + *buf++ = (char) ((psz[0] - L'0') * 0100 + + (psz[1] - L'0') * 010 + (psz[2] - L'0')); } @@ -799,7 +919,10 @@ size_t wxMBConvUTF8::WC2MB(char *buf, const wchar_t *psz, size_t n) const else { unsigned cnt; - for (cnt = 0; cc > utf8_max[cnt]; cnt++) {} + for (cnt = 0; cc > utf8_max[cnt]; cnt++) + { + } + if (!cnt) { // plain ASCII char @@ -807,7 +930,6 @@ size_t wxMBConvUTF8::WC2MB(char *buf, const wchar_t *psz, size_t n) const *buf++ = (char) cc; len++; } - else { len += cnt + 1; @@ -821,15 +943,15 @@ size_t wxMBConvUTF8::WC2MB(char *buf, const wchar_t *psz, size_t n) const } } - if (buf && (len dstLen ) + return wxCONV_FAILED; + + *dst++ = ch; } - if (buf && len 1) + if ( outLen > dstLen ) + return wxCONV_FAILED; + + *outBuff++ = cc[0]; + if ( numChars == 2 ) { - *(wxUint16*)buf = cc[1]; - buf += sizeof(wxUint16); + // second character of a surrogate + *outBuff++ = cc[1]; } } - - len += pa*sizeof(wxUint16); - psz++; } - if (buf && len<=n-sizeof(wxUint16)) *(wxUint16*)buf=0; - return len; + return outLen; } +// ---------------------------------------------------------------------------- +// endian-reversing conversions +// ---------------------------------------------------------------------------- -// swap 16bit MB to 32bit String -size_t wxMBConvUTF16swap::MB2WC(wchar_t *buf, const char *psz, size_t n) const +size_t +wxMBConvUTF16swap::ToWChar(wchar_t *dst, size_t dstLen, + const char *src, size_t srcLen) const { - size_t len=0; + srcLen = GetLength(src, srcLen); + if ( srcLen == wxNO_LEN ) + return wxCONV_FAILED; - while (*(wxUint16*)psz && (!buf || len < n)) + const size_t inLen = srcLen / BYTES_PER_CHAR; + if ( !dst ) { - wxUint32 cc; - char tmp[4]; - tmp[0]=psz[1]; tmp[1]=psz[0]; - tmp[2]=psz[3]; tmp[3]=psz[2]; + // optimization: return maximal space which could be needed for this + // string even if the real size could be smaller if the buffer contains + // any surrogates + return inLen; + } - size_t pa=decode_utf16((wxUint16*)tmp, cc); - if (pa == (size_t)-1) - return pa; + size_t outLen = 0; + const wxUint16 *inBuff = wx_reinterpret_cast(const wxUint16 *, src); + for ( const wxUint16 * const inEnd = inBuff + inLen; inBuff < inEnd; ) + { + wxUint32 ch; + wxUint16 tmp[2]; - if (buf) - *buf++ = cc; + tmp[0] = wxUINT16_SWAP_ALWAYS(*inBuff); + inBuff++; + tmp[1] = wxUINT16_SWAP_ALWAYS(*inBuff); + + const size_t numChars = decode_utf16(tmp, ch); + if ( numChars == wxCONV_FAILED ) + return wxCONV_FAILED; + + if ( numChars == 2 ) + inBuff++; - len++; - psz += pa * sizeof(wxUint16); + if ( ++outLen > dstLen ) + return wxCONV_FAILED; + + *dst++ = ch; } - if (buf && len 1) + if ( outLen > dstLen ) + return wxCONV_FAILED; + + *outBuff++ = wxUINT16_SWAP_ALWAYS(cc[0]); + if ( numChars == 2 ) { - *buf++ = ((char*)cc)[3]; - *buf++ = ((char*)cc)[2]; + // second character of a surrogate + *outBuff++ = wxUINT16_SWAP_ALWAYS(cc[1]); } } - - len += pa*sizeof(wxUint16); - psz++; } - if (buf && len<=n-sizeof(wxUint16)) *(wxUint16*)buf=0; - return len; + return outLen; } -#endif // WC_UTF16 +#endif // WC_UTF16/!WC_UTF16 -// ---------------------------------------------------------------------------- +// ============================================================================ // UTF-32 -// ---------------------------------------------------------------------------- +// ============================================================================ #ifdef WORDS_BIGENDIAN -#define wxMBConvUTF32straight wxMBConvUTF32BE -#define wxMBConvUTF32swap wxMBConvUTF32LE + #define wxMBConvUTF32straight wxMBConvUTF32BE + #define wxMBConvUTF32swap wxMBConvUTF32LE #else -#define wxMBConvUTF32swap wxMBConvUTF32BE -#define wxMBConvUTF32straight wxMBConvUTF32LE + #define wxMBConvUTF32swap wxMBConvUTF32BE + #define wxMBConvUTF32straight wxMBConvUTF32LE #endif WXDLLIMPEXP_DATA_BASE(wxMBConvUTF32LE) wxConvUTF32LE; WXDLLIMPEXP_DATA_BASE(wxMBConvUTF32BE) wxConvUTF32BE; +/* static */ +size_t wxMBConvUTF32Base::GetLength(const char *src, size_t srcLen) +{ + if ( srcLen == wxNO_LEN ) + { + // count the number of bytes in input, including the trailing NULs + const wxUint32 *inBuff = wx_reinterpret_cast(const wxUint32 *, src); + for ( srcLen = 1; *inBuff++; srcLen++ ) + ; + + srcLen *= BYTES_PER_CHAR; + } + else // we already have the length + { + // we can only convert an entire number of UTF-32 characters + if ( srcLen % BYTES_PER_CHAR ) + return wxCONV_FAILED; + } + + return srcLen; +} +// case when in-memory representation is UTF-16 #ifdef WC_UTF16 -// copy 32bit MB to 16bit String -size_t wxMBConvUTF32straight::MB2WC(wchar_t *buf, const char *psz, size_t n) const +// ---------------------------------------------------------------------------- +// conversions without endianness change +// ---------------------------------------------------------------------------- + +size_t +wxMBConvUTF32straight::ToWChar(wchar_t *dst, size_t dstLen, + const char *src, size_t srcLen) const { - size_t len=0; + srcLen = GetLength(src, srcLen); + if ( srcLen == wxNO_LEN ) + return wxCONV_FAILED; - while (*(wxUint32*)psz && (!buf || len < n)) + const wxUint32 *inBuff = wx_reinterpret_cast(const wxUint32 *, src); + const size_t inLen = srcLen / BYTES_PER_CHAR; + size_t outLen = 0; + for ( size_t n = 0; n < inLen; n++ ) { wxUint16 cc[2]; + const size_t numChars = encode_utf16(*inBuff++, cc); + if ( numChars == wxCONV_FAILED ) + return wxCONV_FAILED; - size_t pa=encode_utf16(*(wxUint32*)psz, cc); - if (pa == (size_t)-1) - return pa; - - if (buf) + outLen += numChars; + if ( dst ) { - *buf++ = cc[0]; - if (pa > 1) - *buf++ = cc[1]; + if ( outLen > dstLen ) + return wxCONV_FAILED; + + *dst++ = cc[0]; + if ( numChars == 2 ) + { + // second character of a surrogate + *dst++ = cc[1]; + } } - len += pa; - psz += sizeof(wxUint32); } - if (buf && len dstLen ) + return wxCONV_FAILED; - return len; -} + *outBuff++ = ch; + } + return outLen; +} +// ---------------------------------------------------------------------------- +// endian-reversing conversions +// ---------------------------------------------------------------------------- -// swap 32bit MB to 16bit String -size_t wxMBConvUTF32swap::MB2WC(wchar_t *buf, const char *psz, size_t n) const +size_t +wxMBConvUTF32swap::ToWChar(wchar_t *dst, size_t dstLen, + const char *src, size_t srcLen) const { - size_t len=0; + srcLen = GetLength(src, srcLen); + if ( srcLen == wxNO_LEN ) + return wxCONV_FAILED; - while (*(wxUint32*)psz && (!buf || len < n)) + const wxUint32 *inBuff = wx_reinterpret_cast(const wxUint32 *, src); + const size_t inLen = srcLen / BYTES_PER_CHAR; + size_t outLen = 0; + for ( size_t n = 0; n < inLen; n++, inBuff++ ) { - char tmp[4]; - tmp[0] = psz[3]; tmp[1] = psz[2]; - tmp[2] = psz[1]; tmp[3] = psz[0]; - - wxUint16 cc[2]; + const size_t numChars = encode_utf16(wxUINT32_SWAP_ALWAYS(*inBuff), cc); + if ( numChars == wxCONV_FAILED ) + return wxCONV_FAILED; - size_t pa=encode_utf16(*(wxUint32*)tmp, cc); - if (pa == (size_t)-1) - return pa; - - if (buf) + outLen += numChars; + if ( dst ) { - *buf++ = cc[0]; - if (pa > 1) - *buf++ = cc[1]; + if ( outLen > dstLen ) + return wxCONV_FAILED; + + *dst++ = cc[0]; + if ( numChars == 2 ) + { + // second character of a surrogate + *dst++ = cc[1]; + } } - len += pa; - psz += sizeof(wxUint32); } - if (buf && len dstLen ) + return wxCONV_FAILED; - return len; + *outBuff++ = wxUINT32_SWAP_ALWAYS(ch); + } + + return outLen; } -#else // WC_UTF16 +#else // !WC_UTF16: wchar_t is UTF-32 +// ---------------------------------------------------------------------------- +// conversions without endianness change +// ---------------------------------------------------------------------------- -// copy 32bit MB to 32bit String -size_t wxMBConvUTF32straight::MB2WC(wchar_t *buf, const char *psz, size_t n) const +size_t +wxMBConvUTF32straight::ToWChar(wchar_t *dst, size_t dstLen, + const char *src, size_t srcLen) const { - size_t len=0; + // use memcpy() as it should be much faster than hand-written loop + srcLen = GetLength(src, srcLen); + if ( srcLen == wxNO_LEN ) + return wxCONV_FAILED; - while (*(wxUint32*)psz && (!buf || len < n)) + const size_t inLen = srcLen/BYTES_PER_CHAR; + if ( dst ) { - if (buf) - *buf++ = *(wxUint32*)psz; - len++; - psz += sizeof(wxUint32); - } + if ( dstLen < inLen ) + return wxCONV_FAILED; - if (buf && lenm_minMBCharWidth = m_minMBCharWidth; + return p; + } + bool IsOk() const - { return (m2w != (iconv_t)-1) && (w2m != (iconv_t)-1); } + { return (m2w != ICONV_T_INVALID) && (w2m != ICONV_T_INVALID); } protected: - // the iconv handlers used to translate from multibyte to wide char and in - // the other direction + // the iconv handlers used to translate from multibyte + // to wide char and in the other direction iconv_t m2w, w2m; + #if wxUSE_THREADS // guards access to m2w and w2m objects wxMutex m_iconvMutex; @@ -1344,124 +1622,202 @@ protected: private: // the name (for iconv_open()) of a wide char charset -- if none is // available on this machine, it will remain NULL - static const char *ms_wcCharsetName; + static wxString ms_wcCharsetName; // true if the wide char encoding we use (i.e. ms_wcCharsetName) has // different endian-ness than the native one static bool ms_wcNeedsSwap; + + + // name of the encoding handled by this conversion + wxString m_name; + + // cached result of GetMBNulLen(); set to 0 meaning "unknown" + // initially + size_t m_minMBCharWidth; }; -const char *wxMBConv_iconv::ms_wcCharsetName = NULL; +// make the constructor available for unit testing +WXDLLIMPEXP_BASE wxMBConv* new_wxMBConv_iconv( const wxChar* name ) +{ + wxMBConv_iconv* result = new wxMBConv_iconv( name ); + if ( !result->IsOk() ) + { + delete result; + return 0; + } + + return result; +} + +wxString wxMBConv_iconv::ms_wcCharsetName; bool wxMBConv_iconv::ms_wcNeedsSwap = false; wxMBConv_iconv::wxMBConv_iconv(const wxChar *name) + : m_name(name) { - // Do it the hard way - char cname[100]; - for (size_t i = 0; i < wxStrlen(name)+1; i++) - cname[i] = (char) name[i]; + m_minMBCharWidth = 0; + + // iconv operates with chars, not wxChars, but luckily it uses only ASCII + // names for the charsets + const wxCharBuffer cname(wxString(name).ToAscii()); // check for charset that represents wchar_t: - if (ms_wcCharsetName == NULL) + if ( ms_wcCharsetName.empty() ) { - ms_wcNeedsSwap = false; + wxLogTrace(TRACE_STRCONV, _T("Looking for wide char codeset:")); - // try charset with explicit bytesex info (e.g. "UCS-4LE"): - ms_wcCharsetName = WC_NAME_BEST; - m2w = iconv_open(ms_wcCharsetName, cname); +#if wxUSE_FONTMAP + const wxChar **names = wxFontMapperBase::GetAllEncodingNames(WC_ENC); +#else // !wxUSE_FONTMAP + static const wxChar *names_static[] = + { +#if SIZEOF_WCHAR_T == 4 + _T("UCS-4"), +#elif SIZEOF_WCHAR_T = 2 + _T("UCS-2"), +#endif + NULL + }; + const wxChar **names = names_static; +#endif // wxUSE_FONTMAP/!wxUSE_FONTMAP - if (m2w == (iconv_t)-1) + for ( ; *names && ms_wcCharsetName.empty(); ++names ) { - // try charset w/o bytesex info (e.g. "UCS4") - // and check for bytesex ourselves: - ms_wcCharsetName = WC_NAME; - m2w = iconv_open(ms_wcCharsetName, cname); + const wxString nameCS(*names); - // last bet, try if it knows WCHAR_T pseudo-charset - if (m2w == (iconv_t)-1) - { - ms_wcCharsetName = "WCHAR_T"; - m2w = iconv_open(ms_wcCharsetName, cname); - } + // first try charset with explicit bytesex info (e.g. "UCS-4LE"): + wxString nameXE(nameCS); + +#ifdef WORDS_BIGENDIAN + nameXE += _T("BE"); +#else // little endian + nameXE += _T("LE"); +#endif - if (m2w != (iconv_t)-1) + wxLogTrace(TRACE_STRCONV, _T(" trying charset \"%s\""), + nameXE.c_str()); + + m2w = iconv_open(nameXE.ToAscii(), cname); + if ( m2w == ICONV_T_INVALID ) { - char buf[2], *bufPtr; - wchar_t wbuf[2], *wbufPtr; - size_t insz, outsz; - size_t res; - - buf[0] = 'A'; - buf[1] = 0; - wbuf[0] = 0; - insz = 2; - outsz = SIZEOF_WCHAR_T * 2; - wbufPtr = wbuf; - bufPtr = buf; - - res = iconv(m2w, ICONV_CHAR_CAST(&bufPtr), &insz, - (char**)&wbufPtr, &outsz); - - if (ICONV_FAILED(res, insz)) - { - ms_wcCharsetName = NULL; - wxLogLastError(wxT("iconv")); - wxLogError(_("Conversion to charset '%s' doesn't work."), name); - } - else + // try charset w/o bytesex info (e.g. "UCS4") + wxLogTrace(TRACE_STRCONV, _T(" trying charset \"%s\""), + nameCS.c_str()); + m2w = iconv_open(nameCS.ToAscii(), cname); + + // and check for bytesex ourselves: + if ( m2w != ICONV_T_INVALID ) { - ms_wcNeedsSwap = wbuf[0] != (wchar_t)buf[0]; + char buf[2], *bufPtr; + wchar_t wbuf[2], *wbufPtr; + size_t insz, outsz; + size_t res; + + buf[0] = 'A'; + buf[1] = 0; + wbuf[0] = 0; + insz = 2; + outsz = SIZEOF_WCHAR_T * 2; + wbufPtr = wbuf; + bufPtr = buf; + + res = iconv( + m2w, ICONV_CHAR_CAST(&bufPtr), &insz, + (char**)&wbufPtr, &outsz); + + if (ICONV_FAILED(res, insz)) + { + wxLogLastError(wxT("iconv")); + wxLogError(_("Conversion to charset '%s' doesn't work."), + nameCS.c_str()); + } + else // ok, can convert to this encoding, remember it + { + ms_wcCharsetName = nameCS; + ms_wcNeedsSwap = wbuf[0] != (wchar_t)buf[0]; + } } } - else + else // use charset not requiring byte swapping { - ms_wcCharsetName = NULL; - - // VS: we must not output an error here, since wxWidgets will safely - // fall back to using wxEncodingConverter. - wxLogTrace(wxT("strconv"), wxT("Impossible to convert to/from charset '%s' with iconv, falling back to wxEncodingConverter."), name); - //wxLogError( + ms_wcCharsetName = nameXE; } } - wxLogTrace(wxT("strconv"), wxT("wchar_t charset is '%s', needs swap: %i"), ms_wcCharsetName, ms_wcNeedsSwap); + + wxLogTrace(TRACE_STRCONV, + wxT("iconv wchar_t charset is \"%s\"%s"), + ms_wcCharsetName.empty() ? _T("") + : ms_wcCharsetName.c_str(), + ms_wcNeedsSwap ? _T(" (needs swap)") + : _T("")); } else // we already have ms_wcCharsetName { - m2w = iconv_open(ms_wcCharsetName, cname); + m2w = iconv_open(ms_wcCharsetName.ToAscii(), cname); } - // NB: don't ever pass NULL to iconv_open(), it may crash! - if ( ms_wcCharsetName ) + if ( ms_wcCharsetName.empty() ) { - w2m = iconv_open( cname, ms_wcCharsetName); + w2m = ICONV_T_INVALID; } else { - w2m = (iconv_t)-1; + w2m = iconv_open(cname, ms_wcCharsetName.ToAscii()); + if ( w2m == ICONV_T_INVALID ) + { + wxLogTrace(TRACE_STRCONV, + wxT("\"%s\" -> \"%s\" works but not the converse!?"), + ms_wcCharsetName.c_str(), cname.data()); + } } } wxMBConv_iconv::~wxMBConv_iconv() { - if ( m2w != (iconv_t)-1 ) + if ( m2w != ICONV_T_INVALID ) iconv_close(m2w); - if ( w2m != (iconv_t)-1 ) + if ( w2m != ICONV_T_INVALID ) iconv_close(w2m); } size_t wxMBConv_iconv::MB2WC(wchar_t *buf, const char *psz, size_t n) const { + // find the string length: notice that must be done differently for + // NUL-terminated strings and UTF-16/32 which are terminated with 2/4 NULs + size_t inbuf; + const size_t nulLen = GetMBNulLen(); + switch ( nulLen ) + { + default: + return wxCONV_FAILED; + + case 1: + inbuf = strlen(psz); // arguably more optimized than our version + break; + + case 2: + case 4: + // for UTF-16/32 not only we need to have 2/4 consecutive NULs but + // they also have to start at character boundary and not span two + // adjacent characters + const char *p; + for ( p = psz; NotAllNULs(p, nulLen); p += nulLen ) + ; + inbuf = p - psz; + break; + } + #if wxUSE_THREADS - // NB: iconv() is MT-safe, but each thread must use it's own iconv_t handle. - // Unfortunately there is a couple of global wxCSConv objects such as + // NB: iconv() is MT-safe, but each thread must use its own iconv_t handle. + // Unfortunately there are a couple of global wxCSConv objects such as // wxConvLocal that are used all over wx code, so we have to make sure // the handle is used by at most one thread at the time. Otherwise // only a few wx classes would be safe to use from non-main threads // as MB<->WC conversion would fail "randomly". wxMutexLocker lock(wxConstCast(this, wxMBConv_iconv)->m_iconvMutex); -#endif +#endif // wxUSE_THREADS - size_t inbuf = strlen(psz); size_t outbuf = n * SIZEOF_WCHAR_T; size_t res, cres; // VS: Use these instead of psz, buf because iconv() modifies its arguments: @@ -1479,12 +1835,11 @@ size_t wxMBConv_iconv::MB2WC(wchar_t *buf, const char *psz, size_t n) const if (ms_wcNeedsSwap) { // convert to native endianness - WC_BSWAP(buf /* _not_ bufPtr */, res) + for ( unsigned i = 0; i < res; i++ ) + buf[n] = WC_BSWAP(buf[i]); } - // NB: iconv was given only strlen(psz) characters on input, and so - // it couldn't convert the trailing zero. Let's do it ourselves - // if there's some room left for it in the output buffer. + // NUL-terminate the string if there is any space left if (res < n) buf[res] = 0; } @@ -1494,23 +1849,26 @@ size_t wxMBConv_iconv::MB2WC(wchar_t *buf, const char *psz, size_t n) const // to calculate destination buffer requirement wchar_t tbuf[8]; res = 0; - do { + + do + { bufPtr = tbuf; - outbuf = 8*SIZEOF_WCHAR_T; + outbuf = 8 * SIZEOF_WCHAR_T; cres = iconv(m2w, ICONV_CHAR_CAST(&pszPtr), &inbuf, (char**)&bufPtr, &outbuf ); - res += 8-(outbuf/SIZEOF_WCHAR_T); - } while ((cres==(size_t)-1) && (errno==E2BIG)); + res += 8 - (outbuf / SIZEOF_WCHAR_T); + } + while ((cres == (size_t)-1) && (errno == E2BIG)); } if (ICONV_FAILED(cres, inbuf)) { //VS: it is ok if iconv fails, hence trace only - wxLogTrace(wxT("strconv"), wxT("iconv failed: %s"), wxSysErrorMsg(wxSysErrorCode())); - return (size_t)-1; + wxLogTrace(TRACE_STRCONV, wxT("iconv failed: %s"), wxSysErrorMsg(wxSysErrorCode())); + return wxCONV_FAILED; } return res; @@ -1523,7 +1881,8 @@ size_t wxMBConv_iconv::WC2MB(char *buf, const wchar_t *psz, size_t n) const wxMutexLocker lock(wxConstCast(this, wxMBConv_iconv)->m_iconvMutex); #endif - size_t inbuf = wxWcslen(psz) * SIZEOF_WCHAR_T; + size_t inlen = wxWcslen(psz); + size_t inbuf = inlen * SIZEOF_WCHAR_T; size_t outbuf = n; size_t res, cres; @@ -1532,13 +1891,14 @@ size_t wxMBConv_iconv::WC2MB(char *buf, const wchar_t *psz, size_t n) const if (ms_wcNeedsSwap) { // need to copy to temp buffer to switch endianness - // this absolutely doesn't rock! - // (no, doing WC_BSWAP twice on the original buffer won't help, as it + // (doing WC_BSWAP twice on the original buffer won't help, as it // could be in read-only memory, or be accessed in some other thread) - tmpbuf=(wchar_t*)malloc((inbuf+1)*SIZEOF_WCHAR_T); - memcpy(tmpbuf,psz,(inbuf+1)*SIZEOF_WCHAR_T); - WC_BSWAP(tmpbuf, inbuf) - psz=tmpbuf; + tmpbuf = (wchar_t *)malloc(inbuf + SIZEOF_WCHAR_T); + for ( size_t i = 0; i < inlen; i++ ) + tmpbuf[n] = WC_BSWAP(psz[i]); + + tmpbuf[inlen] = L'\0'; + psz = tmpbuf; } if (buf) @@ -1546,7 +1906,7 @@ size_t wxMBConv_iconv::WC2MB(char *buf, const wchar_t *psz, size_t n) const // have destination buffer, convert there cres = iconv( w2m, ICONV_CHAR_CAST(&psz), &inbuf, &buf, &outbuf ); - res = n-outbuf; + res = n - outbuf; // NB: iconv was given only wcslen(psz) characters on input, and so // it couldn't convert the trailing zero. Let's do it ourselves @@ -1556,17 +1916,20 @@ size_t wxMBConv_iconv::WC2MB(char *buf, const wchar_t *psz, size_t n) const } else { - // no destination buffer... convert using temp buffer + // no destination buffer: convert using temp buffer // to calculate destination buffer requirement char tbuf[16]; res = 0; - do { - buf = tbuf; outbuf = 16; + do + { + buf = tbuf; + outbuf = 16; cres = iconv( w2m, ICONV_CHAR_CAST(&psz), &inbuf, &buf, &outbuf ); res += 16 - outbuf; - } while ((cres==(size_t)-1) && (errno==E2BIG)); + } + while ((cres == (size_t)-1) && (errno == E2BIG)); } if (ms_wcNeedsSwap) @@ -1576,14 +1939,43 @@ size_t wxMBConv_iconv::WC2MB(char *buf, const wchar_t *psz, size_t n) const if (ICONV_FAILED(cres, inbuf)) { - //VS: it is ok if iconv fails, hence trace only - wxLogTrace(wxT("strconv"), wxT("iconv failed: %s"), wxSysErrorMsg(wxSysErrorCode())); - return (size_t)-1; + wxLogTrace(TRACE_STRCONV, wxT("iconv failed: %s"), wxSysErrorMsg(wxSysErrorCode())); + return wxCONV_FAILED; } return res; } +size_t wxMBConv_iconv::GetMBNulLen() const +{ + if ( m_minMBCharWidth == 0 ) + { + wxMBConv_iconv * const self = wxConstCast(this, wxMBConv_iconv); + +#if wxUSE_THREADS + // NB: explained in MB2WC + wxMutexLocker lock(self->m_iconvMutex); +#endif + + wchar_t *wnul = L""; + char buf[8]; // should be enough for NUL in any encoding + size_t inLen = sizeof(wchar_t), + outLen = WXSIZEOF(buf); + char *inBuff = (char *)wnul; + char *outBuff = buf; + if ( iconv(w2m, ICONV_CHAR_CAST(&inBuff), &inLen, &outBuff, &outLen) == (size_t)-1 ) + { + self->m_minMBCharWidth = (size_t)-1; + } + else // ok + { + self->m_minMBCharWidth = outBuff - buf; + } + } + + return m_minMBCharWidth; +} + #endif // HAVE_ICONV @@ -1605,21 +1997,31 @@ public: wxMBConv_win32() { m_CodePage = CP_ACP; + m_minMBCharWidth = 0; + } + + wxMBConv_win32(const wxMBConv_win32& conv) + : wxMBConv() + { + m_CodePage = conv.m_CodePage; + m_minMBCharWidth = conv.m_minMBCharWidth; } #if wxUSE_FONTMAP wxMBConv_win32(const wxChar* name) { m_CodePage = wxCharsetToCodepage(name); + m_minMBCharWidth = 0; } wxMBConv_win32(wxFontEncoding encoding) { m_CodePage = wxEncodingToCodepage(encoding); + m_minMBCharWidth = 0; } -#endif +#endif // wxUSE_FONTMAP - size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const + virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const { // note that we have to use MB_ERR_INVALID_CHARS flag as it without it // the behaviour is not compatible with the Unix version (using iconv) @@ -1627,14 +2029,27 @@ public: // wouldn't work if reading an incomplete MB char didn't result in an // error // - // note however that using MB_ERR_INVALID_CHARS with CP_UTF7 results in - // an error (tested under Windows Server 2003) and apparently it is - // done on purpose, i.e. the function accepts any input in this case - // and although I'd prefer to return error on ill-formed output, our - // own wxMBConvUTF7 doesn't detect errors (e.g. lone "+" which is - // explicitly ill-formed according to RFC 2152) neither so we don't - // even have any fallback here... - int flags = m_CodePage == CP_UTF7 ? 0 : MB_ERR_INVALID_CHARS; + // Moreover, MB_ERR_INVALID_CHARS is only supported on Win 2K SP4 or + // Win XP or newer and it is not supported for UTF-[78] so we always + // use our own conversions in this case. See + // http://blogs.msdn.com/michkap/archive/2005/04/19/409566.aspx + // http://msdn.microsoft.com/library/en-us/intl/unicode_17si.asp + if ( m_CodePage == CP_UTF8 ) + { + return wxConvUTF8.MB2WC(buf, psz, n); + } + + if ( m_CodePage == CP_UTF7 ) + { + return wxConvUTF7.MB2WC(buf, psz, n); + } + + int flags = 0; + if ( (m_CodePage < 50000 && m_CodePage != CP_SYMBOL) && + IsAtLeastWin2kSP4() ) + { + flags = MB_ERR_INVALID_CHARS; + } const size_t len = ::MultiByteToWideChar ( @@ -1645,14 +2060,44 @@ public: buf, // output string buf ? n : 0 // size of output buffer ); + if ( !len ) + { + // function totally failed + return wxCONV_FAILED; + } + + // if we were really converting and didn't use MB_ERR_INVALID_CHARS, + // check if we succeeded, by doing a double trip: + if ( !flags && buf ) + { + const size_t mbLen = strlen(psz); + wxCharBuffer mbBuf(mbLen); + if ( ::WideCharToMultiByte + ( + m_CodePage, + 0, + buf, + -1, + mbBuf.data(), + mbLen + 1, // size in bytes, not length + NULL, + NULL + ) == 0 || + strcmp(mbBuf, psz) != 0 ) + { + // we didn't obtain the same thing we started from, hence + // the conversion was lossy and we consider that it failed + return wxCONV_FAILED; + } + } // note that it returns count of written chars for buf != NULL and size // of the needed buffer for buf == NULL so in either case the length of // the string (which never includes the terminating NUL) is one less - return len ? len - 1 : (size_t)-1; + return len - 1; } - size_t WC2MB(char *buf, const wchar_t *pwz, size_t n) const + virtual size_t WC2MB(char *buf, const wchar_t *pwz, size_t n) const { /* we have a problem here: by default, WideCharToMultiByte() may @@ -1703,7 +2148,7 @@ public: if ( !len ) { // function totally failed - return (size_t)-1; + return wxCONV_FAILED; } // if we were really converting, check if we succeeded @@ -1714,17 +2159,17 @@ public: // check if the conversion failed, i.e. if any replacements // were done if ( usedDef ) - return (size_t)-1; + return wxCONV_FAILED; } else // we must resort to double tripping... { wxWCharBuffer wcBuf(n); - if ( MB2WC(wcBuf.data(), buf, n) == (size_t)-1 || + if ( MB2WC(wcBuf.data(), buf, n) == wxCONV_FAILED || wcscmp(wcBuf, pwz) != 0 ) { // we didn't obtain the same thing we started from, hence // the conversion was lossy and we consider that it failed - return (size_t)-1; + return wxCONV_FAILED; } } } @@ -1733,6 +2178,47 @@ public: return len - 1; } + virtual size_t GetMBNulLen() const + { + if ( m_minMBCharWidth == 0 ) + { + int len = ::WideCharToMultiByte + ( + m_CodePage, // code page + 0, // no flags + L"", // input string + 1, // translate just the NUL + NULL, // output buffer + 0, // and its size + NULL, // no replacement char + NULL // [out] don't care if it was used + ); + + wxMBConv_win32 * const self = wxConstCast(this, wxMBConv_win32); + switch ( len ) + { + default: + wxLogDebug(_T("Unexpected NUL length %d"), len); + self->m_minMBCharWidth = (size_t)-1; + break; + + case 0: + self->m_minMBCharWidth = (size_t)-1; + break; + + case 1: + case 2: + case 4: + self->m_minMBCharWidth = len; + break; + } + } + + return m_minMBCharWidth; + } + + virtual wxMBConv *Clone() const { return new wxMBConv_win32(*this); } + bool IsOk() const { return m_CodePage != -1; } private: @@ -1745,17 +2231,18 @@ private: int verMaj, verMin; switch ( wxGetOsVersion(&verMaj, &verMin) ) { - case wxWIN95: + case wxOS_WINDOWS_9X: s_isWin98Or2k = verMaj >= 4 && verMin >= 10; break; - case wxWINDOWS_NT: + case wxOS_WINDOWS_NT: s_isWin98Or2k = verMaj >= 5; break; default: - // unknown, be conseravtive by default + // unknown: be conservative by default s_isWin98Or2k = 0; + break; } wxASSERT_MSG( s_isWin98Or2k != -1, _T("should be set above") ); @@ -1764,7 +2251,40 @@ private: return s_isWin98Or2k == 1; } + static bool IsAtLeastWin2kSP4() + { +#ifdef __WXWINCE__ + return false; +#else + static int s_isAtLeastWin2kSP4 = -1; + + if ( s_isAtLeastWin2kSP4 == -1 ) + { + OSVERSIONINFOEX ver; + + memset(&ver, 0, sizeof(ver)); + ver.dwOSVersionInfoSize = sizeof(ver); + GetVersionEx((OSVERSIONINFO*)&ver); + + s_isAtLeastWin2kSP4 = + ((ver.dwMajorVersion > 5) || // Vista+ + (ver.dwMajorVersion == 5 && ver.dwMinorVersion > 0) || // XP/2003 + (ver.dwMajorVersion == 5 && ver.dwMinorVersion == 0 && + ver.wServicePackMajor >= 4)) // 2000 SP4+ + ? 1 : 0; + } + + return s_isAtLeastWin2kSP4 == 1; +#endif + } + + + // the code page we're working with long m_CodePage; + + // cached result of GetMBNulLen(), set to 0 initially meaning + // "unknown" + size_t m_minMBCharWidth; }; #endif // wxHAVE_WIN32_MB2WC @@ -1775,9 +2295,9 @@ private: #if defined(__WXCOCOA__) -// RN: There is no UTF-32 support in either Core Foundation or -// Cocoa. Strangely enough, internally Core Foundation uses -// UTF 32 internally quite a bit - its just not public (yet). +// RN: There is no UTF-32 support in either Core Foundation or Cocoa. +// Strangely enough, internally Core Foundation uses +// UTF-32 internally quite a bit - its just not public (yet). #include #include @@ -1785,12 +2305,13 @@ private: CFStringEncoding wxCFStringEncFromFontEnc(wxFontEncoding encoding) { CFStringEncoding enc = kCFStringEncodingInvalidId ; - if ( encoding == wxFONTENCODING_DEFAULT ) - { - enc = CFStringGetSystemEncoding(); - } - else switch( encoding) + + switch (encoding) { + case wxFONTENCODING_DEFAULT : + enc = CFStringGetSystemEncoding(); + break ; + case wxFONTENCODING_ISO8859_1 : enc = kCFStringEncodingISOLatin1 ; break ; @@ -1846,7 +2367,7 @@ CFStringEncoding wxCFStringEncFromFontEnc(wxFontEncoding encoding) // break ; case wxFONTENCODING_CP437 : - enc =kCFStringEncodingDOSLatinUS ; + enc = kCFStringEncodingDOSLatinUS ; break ; case wxFONTENCODING_CP850 : enc = kCFStringEncodingDOSLatin1; @@ -1858,7 +2379,7 @@ CFStringEncoding wxCFStringEncFromFontEnc(wxFontEncoding encoding) enc = kCFStringEncodingDOSCyrillic; break ; case wxFONTENCODING_CP866 : - enc =kCFStringEncodingDOSRussian ; + enc = kCFStringEncodingDOSRussian ; break ; case wxFONTENCODING_CP874 : enc = kCFStringEncodingDOSThai; @@ -1867,7 +2388,7 @@ CFStringEncoding wxCFStringEncFromFontEnc(wxFontEncoding encoding) enc = kCFStringEncodingDOSJapanese; break ; case wxFONTENCODING_CP936 : - enc =kCFStringEncodingDOSChineseSimplif ; + enc = kCFStringEncodingDOSChineseSimplif ; break ; case wxFONTENCODING_CP949 : enc = kCFStringEncodingDOSKorean; @@ -1879,10 +2400,10 @@ CFStringEncoding wxCFStringEncFromFontEnc(wxFontEncoding encoding) enc = kCFStringEncodingWindowsLatin2; break ; case wxFONTENCODING_CP1251 : - enc =kCFStringEncodingWindowsCyrillic ; + enc = kCFStringEncodingWindowsCyrillic ; break ; case wxFONTENCODING_CP1252 : - enc =kCFStringEncodingWindowsLatin1 ; + enc = kCFStringEncodingWindowsLatin1 ; break ; case wxFONTENCODING_CP1253 : enc = kCFStringEncodingWindowsGreek; @@ -1891,10 +2412,10 @@ CFStringEncoding wxCFStringEncFromFontEnc(wxFontEncoding encoding) enc = kCFStringEncodingWindowsLatin5; break ; case wxFONTENCODING_CP1255 : - enc =kCFStringEncodingWindowsHebrew ; + enc = kCFStringEncodingWindowsHebrew ; break ; case wxFONTENCODING_CP1256 : - enc =kCFStringEncodingWindowsArabic ; + enc = kCFStringEncodingWindowsArabic ; break ; case wxFONTENCODING_CP1257 : enc = kCFStringEncodingWindowsBalticRim; @@ -2032,10 +2553,12 @@ CFStringEncoding wxCFStringEncFromFontEnc(wxFontEncoding encoding) // case wxFONTENCODING_MACKEYBOARD : // enc = kCFStringEncodingMacKeyboardGlyphs ; // break ; + default : // because gcc is picky break ; - } ; + } + return enc ; } @@ -2047,6 +2570,11 @@ public: Init(CFStringGetSystemEncoding()) ; } + wxMBConv_cocoa(const wxMBConv_cocoa& conv) + { + m_encoding = conv.m_encoding; + } + #if wxUSE_FONTMAP wxMBConv_cocoa(const wxChar* name) { @@ -2059,7 +2587,7 @@ public: Init( wxCFStringEncFromFontEnc(encoding) ); } - ~wxMBConv_cocoa() + virtual ~wxMBConv_cocoa() { } @@ -2100,12 +2628,12 @@ public: CFRelease(theString); - szUniCharBuffer[nOutLength] = '\0' ; + szUniCharBuffer[nOutLength] = '\0'; #if SIZEOF_WCHAR_T == 4 - wxMBConvUTF16 converter ; - converter.MB2WC(szOut, (const char*)szUniCharBuffer , nOutSize ) ; - delete[] szUniCharBuffer; + wxMBConvUTF16 converter; + converter.MB2WC( szOut, (const char*)szUniCharBuffer, nOutSize ); + delete [] szUniCharBuffer; #endif return nOutLength; @@ -2120,10 +2648,10 @@ public: UniChar* szUniBuffer = (UniChar*) szUnConv; #if SIZEOF_WCHAR_T == 4 - wxMBConvUTF16BE converter ; - nBufSize = converter.WC2MB( NULL , szUnConv , 0 ); - szUniBuffer = new UniChar[ (nBufSize / sizeof(UniChar)) + 1] ; - converter.WC2MB( (char*) szUniBuffer , szUnConv, nBufSize + sizeof(UniChar)) ; + wxMBConvUTF16 converter ; + nBufSize = converter.WC2MB( NULL, szUnConv, 0 ); + szUniBuffer = new UniChar[ (nBufSize / sizeof(UniChar)) + 1]; + converter.WC2MB( (char*) szUniBuffer, szUnConv, nBufSize + sizeof(UniChar)); nBufSize /= sizeof(UniChar); #endif @@ -2169,6 +2697,8 @@ public: return nRealOutSize - 1; } + virtual wxMBConv *Clone() const { return new wxMBConv_cocoa(*this); } + bool IsOk() const { return m_encoding != kCFStringEncodingInvalidId && @@ -2195,10 +2725,15 @@ public: Init(CFStringGetSystemEncoding()) ; } + wxMBConv_mac(const wxMBConv_mac& conv) + { + Init(conv.m_char_encoding); + } + #if wxUSE_FONTMAP wxMBConv_mac(const wxChar* name) { - Init( wxMacGetSystemEncFromFontEnc(wxFontMapperBase::Get()->CharsetToEncoding(name, false) ) ) ; + Init( wxMacGetSystemEncFromFontEnc( wxFontMapperBase::Get()->CharsetToEncoding(name, false) ) ); } #endif @@ -2207,61 +2742,80 @@ public: Init( wxMacGetSystemEncFromFontEnc(encoding) ); } - ~wxMBConv_mac() + virtual ~wxMBConv_mac() { OSStatus status = noErr ; - status = TECDisposeConverter(m_MB2WC_converter); - status = TECDisposeConverter(m_WC2MB_converter); + if (m_MB2WC_converter) + status = TECDisposeConverter(m_MB2WC_converter); + if (m_WC2MB_converter) + status = TECDisposeConverter(m_WC2MB_converter); } - - void Init( TextEncodingBase encoding) + void Init( TextEncodingBase encoding,TextEncodingVariant encodingVariant = kTextEncodingDefaultVariant , + TextEncodingFormat encodingFormat = kTextEncodingDefaultFormat) { - OSStatus status = noErr ; - m_char_encoding = encoding ; - m_unicode_encoding = CreateTextEncoding(kTextEncodingUnicodeDefault,0,kUnicode16BitFormat) ; + m_MB2WC_converter = NULL ; + m_WC2MB_converter = NULL ; + m_char_encoding = CreateTextEncoding(encoding, encodingVariant, encodingFormat) ; + m_unicode_encoding = CreateTextEncoding(kTextEncodingUnicodeDefault, 0, kUnicode16BitFormat) ; + } - status = TECCreateConverter(&m_MB2WC_converter, + virtual void CreateIfNeeded() const + { + if ( m_MB2WC_converter == NULL && m_WC2MB_converter == NULL ) + { + OSStatus status = noErr ; + status = TECCreateConverter(&m_MB2WC_converter, m_char_encoding, m_unicode_encoding); - status = TECCreateConverter(&m_WC2MB_converter, + wxASSERT_MSG( status == noErr , _("Unable to create TextEncodingConverter")) ; + status = TECCreateConverter(&m_WC2MB_converter, m_unicode_encoding, m_char_encoding); + wxASSERT_MSG( status == noErr , _("Unable to create TextEncodingConverter")) ; + } } size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const { + CreateIfNeeded() ; OSStatus status = noErr ; ByteCount byteOutLen ; - ByteCount byteInLen = strlen(psz) ; + ByteCount byteInLen = strlen(psz) + 1; wchar_t *tbuf = NULL ; UniChar* ubuf = NULL ; size_t res = 0 ; if (buf == NULL) { - //apple specs say at least 32 - n = wxMax( 32 , byteInLen ) ; - tbuf = (wchar_t*) malloc( n * SIZEOF_WCHAR_T) ; + // Apple specs say at least 32 + n = wxMax( 32, byteInLen ) ; + tbuf = (wchar_t*) malloc( n * SIZEOF_WCHAR_T ) ; } + ByteCount byteBufferLen = n * sizeof( UniChar ) ; + #if SIZEOF_WCHAR_T == 4 ubuf = (UniChar*) malloc( byteBufferLen + 2 ) ; #else ubuf = (UniChar*) (buf ? buf : tbuf) ; #endif - status = TECConvertText(m_MB2WC_converter, (ConstTextPtr) psz , byteInLen, &byteInLen, - (TextPtr) ubuf , byteBufferLen, &byteOutLen); + + status = TECConvertText( + m_MB2WC_converter, (ConstTextPtr) psz, byteInLen, &byteInLen, + (TextPtr) ubuf, byteBufferLen, &byteOutLen); + #if SIZEOF_WCHAR_T == 4 // we have to terminate here, because n might be larger for the trailing zero, and if UniChar // is not properly terminated we get random characters at the end ubuf[byteOutLen / sizeof( UniChar ) ] = 0 ; - wxMBConvUTF16BE converter ; - res = converter.MB2WC( (buf ? buf : tbuf) , (const char*)ubuf , n ) ; + wxMBConvUTF16 converter ; + res = converter.MB2WC( (buf ? buf : tbuf), (const char*)ubuf, n ) ; free( ubuf ) ; #else res = byteOutLen / sizeof( UniChar ) ; #endif + if ( buf == NULL ) free(tbuf) ; @@ -2273,6 +2827,7 @@ public: size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const { + CreateIfNeeded() ; OSStatus status = noErr ; ByteCount byteOutLen ; ByteCount byteInLen = wxWcslen(psz) * SIZEOF_WCHAR_T ; @@ -2281,27 +2836,32 @@ public: if (buf == NULL) { - //apple specs say at least 32 - n = wxMax( 32 , ((byteInLen / SIZEOF_WCHAR_T) * 8) + SIZEOF_WCHAR_T ); + // Apple specs say at least 32 + n = wxMax( 32, ((byteInLen / SIZEOF_WCHAR_T) * 8) + SIZEOF_WCHAR_T ); tbuf = (char*) malloc( n ) ; } ByteCount byteBufferLen = n ; UniChar* ubuf = NULL ; + #if SIZEOF_WCHAR_T == 4 - wxMBConvUTF16BE converter ; - size_t unicharlen = converter.WC2MB( NULL , psz , 0 ) ; + wxMBConvUTF16 converter ; + size_t unicharlen = converter.WC2MB( NULL, psz, 0 ) ; byteInLen = unicharlen ; ubuf = (UniChar*) malloc( byteInLen + 2 ) ; - converter.WC2MB( (char*) ubuf , psz, unicharlen + 2 ) ; + converter.WC2MB( (char*) ubuf, psz, unicharlen + 2 ) ; #else ubuf = (UniChar*) psz ; #endif - status = TECConvertText(m_WC2MB_converter, (ConstTextPtr) ubuf , byteInLen, &byteInLen, - (TextPtr) (buf ? buf : tbuf) , byteBufferLen, &byteOutLen); + + status = TECConvertText( + m_WC2MB_converter, (ConstTextPtr) ubuf, byteInLen, &byteInLen, + (TextPtr) (buf ? buf : tbuf), byteBufferLen, &byteOutLen); + #if SIZEOF_WCHAR_T == 4 free( ubuf ) ; #endif + if ( buf == NULL ) free(tbuf) ; @@ -2314,30 +2874,208 @@ public: //of bogus characters wxWCharBuffer wcBuf(n); size_t pszlen = wxWcslen(psz); - if ( MB2WC(wcBuf.data(), buf, n) == (size_t)-1 || + if ( MB2WC(wcBuf.data(), buf, n) == wxCONV_FAILED || wxWcslen(wcBuf) != pszlen || memcmp(wcBuf, psz, pszlen * sizeof(wchar_t)) != 0 ) { // we didn't obtain the same thing we started from, hence // the conversion was lossy and we consider that it failed - return (size_t)-1; + return wxCONV_FAILED; } } return res ; } + virtual wxMBConv *Clone() const { return new wxMBConv_mac(*this); } + bool IsOk() const - { return m_MB2WC_converter != NULL && m_WC2MB_converter != NULL ; } + { + CreateIfNeeded() ; + return m_MB2WC_converter != NULL && m_WC2MB_converter != NULL; + } -private: - TECObjectRef m_MB2WC_converter ; - TECObjectRef m_WC2MB_converter ; +protected : + mutable TECObjectRef m_MB2WC_converter; + mutable TECObjectRef m_WC2MB_converter; - TextEncodingBase m_char_encoding ; - TextEncodingBase m_unicode_encoding ; + TextEncodingBase m_char_encoding; + TextEncodingBase m_unicode_encoding; }; +// MB is decomposed (D) normalized UTF8 + +class wxMBConv_macUTF8D : public wxMBConv_mac +{ +public : + wxMBConv_macUTF8D() + { + Init( kTextEncodingUnicodeDefault , kUnicodeNoSubset , kUnicodeUTF8Format ) ; + m_uni = NULL; + m_uniBack = NULL ; + } + + virtual ~wxMBConv_macUTF8D() + { + if (m_uni!=NULL) + DisposeUnicodeToTextInfo(&m_uni); + if (m_uniBack!=NULL) + DisposeUnicodeToTextInfo(&m_uniBack); + } + + size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const + { + CreateIfNeeded() ; + OSStatus status = noErr ; + ByteCount byteOutLen ; + ByteCount byteInLen = wxWcslen(psz) * SIZEOF_WCHAR_T ; + + char *tbuf = NULL ; + + if (buf == NULL) + { + // Apple specs say at least 32 + n = wxMax( 32, ((byteInLen / SIZEOF_WCHAR_T) * 8) + SIZEOF_WCHAR_T ); + tbuf = (char*) malloc( n ) ; + } + + ByteCount byteBufferLen = n ; + UniChar* ubuf = NULL ; + +#if SIZEOF_WCHAR_T == 4 + wxMBConvUTF16 converter ; + size_t unicharlen = converter.WC2MB( NULL, psz, 0 ) ; + byteInLen = unicharlen ; + ubuf = (UniChar*) malloc( byteInLen + 2 ) ; + converter.WC2MB( (char*) ubuf, psz, unicharlen + 2 ) ; +#else + ubuf = (UniChar*) psz ; +#endif + + // ubuf is a non-decomposed UniChar buffer + + ByteCount dcubuflen = byteInLen * 2 + 2 ; + ByteCount dcubufread , dcubufwritten ; + UniChar *dcubuf = (UniChar*) malloc( dcubuflen ) ; + + ConvertFromUnicodeToText( m_uni , byteInLen , ubuf , + kUnicodeDefaultDirectionMask, 0, NULL, NULL, NULL, dcubuflen , &dcubufread , &dcubufwritten , dcubuf ) ; + + // we now convert that decomposed buffer into UTF8 + + status = TECConvertText( + m_WC2MB_converter, (ConstTextPtr) dcubuf, dcubufwritten, &dcubufread, + (TextPtr) (buf ? buf : tbuf), byteBufferLen, &byteOutLen); + + free( dcubuf ); + +#if SIZEOF_WCHAR_T == 4 + free( ubuf ) ; +#endif + + if ( buf == NULL ) + free(tbuf) ; + + size_t res = byteOutLen ; + if ( buf && res < n) + { + buf[res] = 0; + // don't test for round-trip fidelity yet, we cannot guarantee it yet + } + + return res ; + } + + size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const + { + CreateIfNeeded() ; + OSStatus status = noErr ; + ByteCount byteOutLen ; + ByteCount byteInLen = strlen(psz) + 1; + wchar_t *tbuf = NULL ; + UniChar* ubuf = NULL ; + size_t res = 0 ; + + if (buf == NULL) + { + // Apple specs say at least 32 + n = wxMax( 32, byteInLen ) ; + tbuf = (wchar_t*) malloc( n * SIZEOF_WCHAR_T ) ; + } + + ByteCount byteBufferLen = n * sizeof( UniChar ) ; + +#if SIZEOF_WCHAR_T == 4 + ubuf = (UniChar*) malloc( byteBufferLen + 2 ) ; +#else + ubuf = (UniChar*) (buf ? buf : tbuf) ; +#endif + + ByteCount dcubuflen = byteBufferLen * 2 + 2 ; + ByteCount dcubufread , dcubufwritten ; + UniChar *dcubuf = (UniChar*) malloc( dcubuflen ) ; + + status = TECConvertText( + m_MB2WC_converter, (ConstTextPtr) psz, byteInLen, &byteInLen, + (TextPtr) dcubuf, dcubuflen, &byteOutLen); + // we have to terminate here, because n might be larger for the trailing zero, and if UniChar + // is not properly terminated we get random characters at the end + dcubuf[byteOutLen / sizeof( UniChar ) ] = 0 ; + + // now from the decomposed UniChar to properly composed uniChar + ConvertFromUnicodeToText( m_uniBack , byteOutLen , dcubuf , + kUnicodeDefaultDirectionMask, 0, NULL, NULL, NULL, dcubuflen , &dcubufread , &dcubufwritten , ubuf ) ; + + free( dcubuf ); + byteOutLen = dcubufwritten ; + ubuf[byteOutLen / sizeof( UniChar ) ] = 0 ; + + +#if SIZEOF_WCHAR_T == 4 + wxMBConvUTF16 converter ; + res = converter.MB2WC( (buf ? buf : tbuf), (const char*)ubuf, n ) ; + free( ubuf ) ; +#else + res = byteOutLen / sizeof( UniChar ) ; +#endif + + if ( buf == NULL ) + free(tbuf) ; + + if ( buf && res < n) + buf[res] = 0; + + return res ; + } + + virtual void CreateIfNeeded() const + { + wxMBConv_mac::CreateIfNeeded() ; + if ( m_uni == NULL ) + { + m_map.unicodeEncoding = CreateTextEncoding(kTextEncodingUnicodeDefault, + kUnicodeNoSubset, kTextEncodingDefaultFormat); + m_map.otherEncoding = CreateTextEncoding(kTextEncodingUnicodeDefault, + kUnicodeCanonicalDecompVariant, kTextEncodingDefaultFormat); + m_map.mappingVersion = kUnicodeUseLatestMapping; + + OSStatus err = CreateUnicodeToTextInfo(&m_map, &m_uni); + wxASSERT_MSG( err == noErr , _(" Couldn't create the UnicodeConverter")) ; + + m_map.unicodeEncoding = CreateTextEncoding(kTextEncodingUnicodeDefault, + kUnicodeNoSubset, kTextEncodingDefaultFormat); + m_map.otherEncoding = CreateTextEncoding(kTextEncodingUnicodeDefault, + kUnicodeCanonicalCompVariant, kTextEncodingDefaultFormat); + m_map.mappingVersion = kUnicodeUseLatestMapping; + err = CreateUnicodeToTextInfo(&m_map, &m_uniBack); + wxASSERT_MSG( err == noErr , _(" Couldn't create the UnicodeConverter")) ; + } + } +protected : + mutable UnicodeToTextInfo m_uni; + mutable UnicodeToTextInfo m_uniBack; + mutable UnicodeMapping m_map; +}; #endif // defined(__WXMAC__) && defined(TARGET_CARBON) // ============================================================================ @@ -2380,8 +3118,8 @@ public: size_t inbuf = strlen(psz); if (buf) { - if (!m2w.Convert(psz,buf)) - return (size_t)-1; + if (!m2w.Convert(psz, buf)) + return wxCONV_FAILED; } return inbuf; } @@ -2391,25 +3129,58 @@ public: const size_t inbuf = wxWcslen(psz); if (buf) { - if (!w2m.Convert(psz,buf)) - return (size_t)-1; + if (!w2m.Convert(psz, buf)) + return wxCONV_FAILED; } return inbuf; } + virtual size_t GetMBNulLen() const + { + switch ( m_enc ) + { + case wxFONTENCODING_UTF16BE: + case wxFONTENCODING_UTF16LE: + return 2; + + case wxFONTENCODING_UTF32BE: + case wxFONTENCODING_UTF32LE: + return 4; + + default: + return 1; + } + } + + virtual wxMBConv *Clone() const { return new wxMBConv_wxwin(m_enc); } + bool IsOk() const { return m_ok; } public: wxFontEncoding m_enc; wxEncodingConverter m2w, w2m; +private: // were we initialized successfully? bool m_ok; DECLARE_NO_COPY_CLASS(wxMBConv_wxwin) }; +// make the constructors available for unit testing +WXDLLIMPEXP_BASE wxMBConv* new_wxMBConv_wxwin( const wxChar* name ) +{ + wxMBConv_wxwin* result = new wxMBConv_wxwin( name ); + if ( !result->IsOk() ) + { + delete result; + return 0; + } + + return result; +} + #endif // wxUSE_FONTMAP // ============================================================================ @@ -2432,7 +3203,11 @@ wxCSConv::wxCSConv(const wxChar *charset) SetName(charset); } +#if wxUSE_FONTMAP + m_encoding = wxFontMapperBase::GetEncodingFromName(charset); +#else m_encoding = wxFONTENCODING_SYSTEM; +#endif } wxCSConv::wxCSConv(wxFontEncoding encoding) @@ -2491,12 +3266,28 @@ void wxCSConv::SetName(const wxChar *charset) } } +#if wxUSE_FONTMAP + +WX_DECLARE_HASH_MAP( wxFontEncoding, wxString, wxIntegerHash, wxIntegerEqual, + wxEncodingNameCache ); + +static wxEncodingNameCache gs_nameCache; +#endif + wxMBConv *wxCSConv::DoCreate() const { +#if wxUSE_FONTMAP + wxLogTrace(TRACE_STRCONV, + wxT("creating conversion for %s"), + (m_name ? m_name + : wxFontMapperBase::GetEncodingName(m_encoding).c_str())); +#endif // wxUSE_FONTMAP + // check for the special case of ASCII or ISO8859-1 charset: as we have // special knowledge of it anyhow, we don't need to create a special // conversion object - if ( m_encoding == wxFONTENCODING_ISO8859_1 ) + if ( m_encoding == wxFONTENCODING_ISO8859_1 || + m_encoding == wxFONTENCODING_DEFAULT ) { // don't convert at all return NULL; @@ -2517,17 +3308,61 @@ wxMBConv *wxCSConv::DoCreate() const #endif // !wxUSE_FONTMAP { wxString name(m_name); +#if wxUSE_FONTMAP + wxFontEncoding encoding(m_encoding); +#endif + + if ( !name.empty() ) + { + wxMBConv_iconv *conv = new wxMBConv_iconv(name); + if ( conv->IsOk() ) + return conv; + + delete conv; #if wxUSE_FONTMAP - if ( name.empty() ) - name = wxFontMapperBase::Get()->GetEncodingName(m_encoding); + encoding = + wxFontMapperBase::Get()->CharsetToEncoding(name, false); #endif // wxUSE_FONTMAP + } +#if wxUSE_FONTMAP + { + const wxEncodingNameCache::iterator it = gs_nameCache.find(encoding); + if ( it != gs_nameCache.end() ) + { + if ( it->second.empty() ) + return NULL; - wxMBConv_iconv *conv = new wxMBConv_iconv(name); - if ( conv->IsOk() ) - return conv; + wxMBConv_iconv *conv = new wxMBConv_iconv(it->second); + if ( conv->IsOk() ) + return conv; - delete conv; + delete conv; + } + + const wxChar** names = wxFontMapperBase::GetAllEncodingNames(encoding); + // CS : in case this does not return valid names (eg for MacRoman) encoding + // got a 'failure' entry in the cache all the same, although it just has to + // be created using a different method, so only store failed iconv creation + // attempts (or perhaps we shoulnd't do this at all ?) + if ( names[0] != NULL ) + { + for ( ; *names; ++names ) + { + wxMBConv_iconv *conv = new wxMBConv_iconv(*names); + if ( conv->IsOk() ) + { + gs_nameCache[encoding] = *names; + return conv; + } + + delete conv; + } + + gs_nameCache[encoding] = _T(""); // cache the failure + } + } +#endif // wxUSE_FONTMAP } #endif // HAVE_ICONV @@ -2545,13 +3380,13 @@ wxMBConv *wxCSConv::DoCreate() const #endif } #endif // wxHAVE_WIN32_MB2WC + #if defined(__WXMAC__) { // leave UTF16 and UTF32 to the built-ins of wx if ( m_name || ( m_encoding < wxFONTENCODING_UTF16BE || ( m_encoding >= wxFONTENCODING_MACMIN && m_encoding <= wxFONTENCODING_MACMAX ) ) ) { - #if wxUSE_FONTMAP wxMBConv_mac *conv = m_name ? new wxMBConv_mac(m_name) : new wxMBConv_mac(m_encoding); @@ -2565,17 +3400,18 @@ wxMBConv *wxCSConv::DoCreate() const } } #endif + #if defined(__WXCOCOA__) { if ( m_name || ( m_encoding <= wxFONTENCODING_UTF16 ) ) { - #if wxUSE_FONTMAP wxMBConv_cocoa *conv = m_name ? new wxMBConv_cocoa(m_name) : new wxMBConv_cocoa(m_encoding); #else wxMBConv_cocoa *conv = new wxMBConv_cocoa(m_encoding); #endif + if ( conv->IsOk() ) return conv; @@ -2617,7 +3453,7 @@ wxMBConv *wxCSConv::DoCreate() const default: // nothing to do but put here to suppress gcc warnings - ; + break; } // step (3) @@ -2635,10 +3471,10 @@ wxMBConv *wxCSConv::DoCreate() const // NB: This is a hack to prevent deadlock. What could otherwise happen // in Unicode build: wxConvLocal creation ends up being here // because of some failure and logs the error. But wxLog will try to - // attach timestamp, for which it will need wxConvLocal (to convert - // time to char* and then wchar_t*), but that fails, tries to log - // error, but wxLog has a (already locked) critical section that - // guards static buffer. + // attach a timestamp, for which it will need wxConvLocal (to convert + // time to char* and then wchar_t*), but that fails, tries to log the + // error, but wxLog has an (already locked) critical section that + // guards the static buffer. static bool alreadyLoggingError = false; if (!alreadyLoggingError) { @@ -2649,9 +3485,10 @@ wxMBConv *wxCSConv::DoCreate() const #if wxUSE_FONTMAP wxFontMapperBase::GetEncodingDescription(m_encoding).c_str() #else // !wxUSE_FONTMAP - wxString::Format(_("encoding %s"), m_encoding).c_str() + wxString::Format(_("encoding %i"), m_encoding).c_str() #endif // wxUSE_FONTMAP/!wxUSE_FONTMAP ); + alreadyLoggingError = false; } @@ -2664,14 +3501,17 @@ void wxCSConv::CreateConvIfNeeded() const { wxCSConv *self = (wxCSConv *)this; // const_cast -#if wxUSE_INTL // if we don't have neither the name nor the encoding, use the default // encoding for this system if ( !m_name && m_encoding == wxFONTENCODING_SYSTEM ) { +#if wxUSE_INTL self->m_name = wxStrdup(wxLocale::GetSystemEncodingName()); - } +#else + // fallback to some reasonable default: + self->m_encoding = wxFONTENCODING_ISO8859_1; #endif // wxUSE_INTL + } self->m_convReal = DoCreate(); self->m_deferred = false; @@ -2711,7 +3551,8 @@ size_t wxCSConv::WC2MB(char *buf, const wchar_t *psz, size_t n) const for (size_t c = 0; c <= len; c++) { if (psz[c] > 0xFF) - return (size_t)-1; + return wxCONV_FAILED; + buf[c] = (char)psz[c]; } } @@ -2720,13 +3561,25 @@ size_t wxCSConv::WC2MB(char *buf, const wchar_t *psz, size_t n) const for (size_t c = 0; c <= len; c++) { if (psz[c] > 0xFF) - return (size_t)-1; + return wxCONV_FAILED; } } return len; } +size_t wxCSConv::GetMBNulLen() const +{ + CreateConvIfNeeded(); + + if ( m_convReal ) + { + return m_convReal->GetMBNulLen(); + } + + return 1; +} + // ---------------------------------------------------------------------------- // globals // ---------------------------------------------------------------------------- @@ -2743,21 +3596,27 @@ static wxCSConv wxConvLocalObj(wxFONTENCODING_SYSTEM); static wxCSConv wxConvISO8859_1Obj(wxFONTENCODING_ISO8859_1); static wxMBConvUTF7 wxConvUTF7Obj; static wxMBConvUTF8 wxConvUTF8Obj; - +#if defined(__WXMAC__) && defined(TARGET_CARBON) +static wxMBConv_macUTF8D wxConvMacUTF8DObj; +#endif WXDLLIMPEXP_DATA_BASE(wxMBConv&) wxConvLibc = wxConvLibcObj; WXDLLIMPEXP_DATA_BASE(wxCSConv&) wxConvLocal = wxConvLocalObj; WXDLLIMPEXP_DATA_BASE(wxCSConv&) wxConvISO8859_1 = wxConvISO8859_1Obj; WXDLLIMPEXP_DATA_BASE(wxMBConvUTF7&) wxConvUTF7 = wxConvUTF7Obj; WXDLLIMPEXP_DATA_BASE(wxMBConvUTF8&) wxConvUTF8 = wxConvUTF8Obj; WXDLLIMPEXP_DATA_BASE(wxMBConv *) wxConvCurrent = &wxConvLibcObj; +WXDLLIMPEXP_DATA_BASE(wxMBConv *) wxConvUI = &wxConvLocal; WXDLLIMPEXP_DATA_BASE(wxMBConv *) wxConvFileName = & #ifdef __WXOSX__ +#if defined(__WXMAC__) && defined(TARGET_CARBON) + wxConvMacUTF8DObj; +#else wxConvUTF8Obj; +#endif #else wxConvLibcObj; #endif - #else // !wxUSE_WCHAR_T // stand-ins in absence of wchar_t @@ -2767,5 +3626,3 @@ WXDLLIMPEXP_DATA_BASE(wxMBConv) wxConvLibc, wxConvUTF8; #endif // wxUSE_WCHAR_T/!wxUSE_WCHAR_T - -