X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/c91830cb4b924451c1ccd8835d64bd71f8e1df54..5ce61d9fd2a225e5579c07a60a71bd481a282d99:/src/common/strconv.cpp diff --git a/src/common/strconv.cpp b/src/common/strconv.cpp index 113c02acfd..c10d2e211b 100644 --- a/src/common/strconv.cpp +++ b/src/common/strconv.cpp @@ -5,7 +5,8 @@ // Modified by: // Created: 29/01/98 // RCS-ID: $Id$ -// Copyright: (c) 1999 Ove Kaaven, Robert Roebling, Vadim Zeitlin, Vaclav Slavik +// Copyright: (c) 1999 Ove Kaaven, Robert Roebling, Vaclav Slavik +// (c) 2000-2003 Vadim Zeitlin // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// @@ -33,8 +34,13 @@ #include "wx/log.h" #endif // WX_PRECOMP +#include "wx/strconv.h" + +#if wxUSE_WCHAR_T + #ifdef __WXMSW__ #include "wx/msw/private.h" + #include "wx/msw/missing.h" #endif #ifndef __WXWINCE__ @@ -45,53 +51,14 @@ #include #include -#include "wx/module.h" -#include "wx/strconv.h" - -// ---------------------------------------------------------------------------- -// globals -// ---------------------------------------------------------------------------- - -#if wxUSE_WCHAR_T - WXDLLIMPEXP_DATA_BASE(wxMBConv) wxConvLibc; - WXDLLIMPEXP_DATA_BASE(wxCSConv) wxConvLocal((const wxChar *)NULL); - WXDLLIMPEXP_DATA_BASE(wxCSConv) wxConvISO8859_1(_T("iso-8859-1")); -#else - // stand-ins in absence of wchar_t - WXDLLIMPEXP_DATA_BASE(wxMBConv) wxConvLibc, - wxConvFile, - wxConvISO8859_1, - wxConvLocal, - wxConvUTF8; -#endif // wxUSE_WCHAR_T - -WXDLLIMPEXP_DATA_BASE(wxMBConv *) wxConvCurrent = &wxConvLibc; - -class wxStrConvModule: public wxModule -{ -public: - wxStrConvModule() : wxModule() { } - virtual bool OnInit() { return TRUE; } - virtual void OnExit() - { -#if wxUSE_WCHAR_T - wxConvLocal.Clear(); - wxConvISO8859_1.Clear(); -#endif - } - - DECLARE_DYNAMIC_CLASS(wxStrConvModule) -}; - -IMPLEMENT_DYNAMIC_CLASS(wxStrConvModule, wxModule) - +#if defined(__WIN32__) && !defined(__WXMICROWIN__) + #define wxHAVE_WIN32_MB2WC +#endif // __WIN32__ but !__WXMICROWIN__ // ---------------------------------------------------------------------------- // headers // ---------------------------------------------------------------------------- -#if wxUSE_WCHAR_T - #ifdef __SALFORDC__ #include #endif @@ -103,6 +70,13 @@ IMPLEMENT_DYNAMIC_CLASS(wxStrConvModule, wxModule) #include "wx/encconv.h" #include "wx/fontmap.h" +#ifdef __WXMAC__ +#include "ATSUnicode.h" +#include "TextCommon.h" +#include "TextEncodingConverter.h" + +#include "wx/mac/private.h" // includes mac headers +#endif // ---------------------------------------------------------------------------- // macros // ---------------------------------------------------------------------------- @@ -110,12 +84,6 @@ IMPLEMENT_DYNAMIC_CLASS(wxStrConvModule, wxModule) #define BSWAP_UCS4(str, len) { unsigned _c; for (_c=0; _c=0x110000) @@ -163,7 +132,7 @@ static size_t encode_utf16(wxUint32 input, wxUint16 *output) if (output) { *output++ = (wxUint16) ((input >> 10)+0xd7c0); - *output++ = (wxUint16) ((input&0x3ff)+0xdc00); + *output = (wxUint16) ((input&0x3ff)+0xdc00); } return 2; } @@ -193,49 +162,11 @@ static size_t decode_utf16(const wxUint16* input, wxUint32& output) // wxMBConv // ---------------------------------------------------------------------------- -#define IGNORE_LIBC 0 - wxMBConv::~wxMBConv() { // nothing to do here } -size_t wxMBConv::MB2WC(wchar_t *buf, const char *psz, size_t n) const -{ -#if IGNORE_LIBC - if (buf) - { - for (size_t i = 0; i < strlen( psz )+1; i++) - buf[i] = (wchar_t) psz[i]; - return strlen( psz ); - } - else - { - return strlen( psz ); - } -#else - return wxMB2WC(buf, psz, n); -#endif -} - -size_t wxMBConv::WC2MB(char *buf, const wchar_t *psz, size_t n) const -{ -#if IGNORE_LIBC - if (buf) - { - for (size_t i = 0; i < wxStrlen( psz )+1; i++) - buf[i] = (char) psz[i]; - return wxStrlen( psz ); - } - else - { - return wxStrlen( psz ); - } -#else - return wxWC2MB(buf, psz, n); -#endif -} - const wxWCharBuffer wxMBConv::cMB2WC(const char *psz) const { if ( psz ) @@ -277,10 +208,22 @@ const wxCharBuffer wxMBConv::cWC2MB(const wchar_t *pwz) const } // ---------------------------------------------------------------------------- -// UTF-7 +// wxMBConvLibc // ---------------------------------------------------------------------------- -WXDLLIMPEXP_DATA_BASE(wxMBConvUTF7) wxConvUTF7; +size_t wxMBConvLibc::MB2WC(wchar_t *buf, const char *psz, size_t n) const +{ + return wxMB2WC(buf, psz, n); +} + +size_t wxMBConvLibc::WC2MB(char *buf, const wchar_t *psz, size_t n) const +{ + return wxWC2MB(buf, psz, n); +} + +// ---------------------------------------------------------------------------- +// UTF-7 +// ---------------------------------------------------------------------------- #if 0 static char utf7_setD[]="ABCDEFGHIJKLMNOPQRSTUVWXYZ" @@ -311,8 +254,6 @@ size_t wxMBConvUTF7::WC2MB(char * WXUNUSED(buf), // UTF-8 // ---------------------------------------------------------------------------- -WXDLLIMPEXP_DATA_BASE(wxMBConvUTF8) wxConvUTF8; - static wxUint32 utf8_max[]= { 0x7f, 0x7ff, 0xffff, 0x1fffff, 0x3ffffff, 0x7fffffff, 0xffffffff }; @@ -361,7 +302,8 @@ size_t wxMBConvUTF8::MB2WC(wchar_t *buf, const char *psz, size_t n) const return (size_t)-1; } #ifdef WC_UTF16 - size_t pa = encode_utf16(res, buf); + // cast is ok because wchar_t == wxUuint16 if WC_UTF16 + size_t pa = encode_utf16(res, (wxUint16 *)buf); if (pa == (size_t)-1) return (size_t)-1; if (buf) @@ -388,7 +330,8 @@ size_t wxMBConvUTF8::WC2MB(char *buf, const wchar_t *psz, size_t n) const { wxUint32 cc; #ifdef WC_UTF16 - size_t pa = decode_utf16(psz, cc); + // cast is ok for WC_UTF16 + size_t pa = decode_utf16((const wxUint16 *)psz, cc); psz += (pa == (size_t)-1) ? 1 : pa; #else cc=(*psz++) & 0x7fffffff; @@ -428,24 +371,16 @@ size_t wxMBConvUTF8::WC2MB(char *buf, const wchar_t *psz, size_t n) const // ---------------------------------------------------------------------------- #ifdef WORDS_BIGENDIAN -#define wxMBConvUTF16straight wxMBConvUTF16BE -#define wxMBConvUTF16swap wxMBConvUTF16LE + #define wxMBConvUTF16straight wxMBConvUTF16BE + #define wxMBConvUTF16swap wxMBConvUTF16LE #else -#define wxMBConvUTF16swap wxMBConvUTF16BE -#define wxMBConvUTF16straight wxMBConvUTF16LE + #define wxMBConvUTF16swap wxMBConvUTF16BE + #define wxMBConvUTF16straight wxMBConvUTF16LE #endif -WXDLLIMPEXP_DATA_BASE(wxMBConvUTF16LE) wxConvUTF16LE; -WXDLLIMPEXP_DATA_BASE(wxMBConvUTF16BE) wxConvUTF16BE; - - - - - #ifdef WC_UTF16 - // copy 16bit MB to 16bit String size_t wxMBConvUTF16straight::MB2WC(wchar_t *buf, const char *psz, size_t n) const { @@ -570,9 +505,13 @@ size_t wxMBConvUTF16straight::WC2MB(char *buf, const wchar_t *psz, size_t n) con if (buf) { - *((wxUint16*)buf)++ = cc[0]; + *(wxUint16*)buf = cc[0]; + buf += sizeof(wxUint16); if (pa > 1) - *((wxUint16*)buf)++ = cc[1]; + { + *(wxUint16*)buf = cc[1]; + buf += sizeof(wxUint16); + } } len += pa*sizeof(wxUint16); @@ -703,7 +642,8 @@ size_t wxMBConvUTF32straight::WC2MB(char *buf, const wchar_t *psz, size_t n) con { wxUint32 cc; - size_t pa=decode_utf16(psz, cc); + // cast is ok for WC_UTF16 + size_t pa = decode_utf16((const wxUint16 *)psz, cc); if (pa == (size_t)-1) return pa; @@ -715,7 +655,9 @@ size_t wxMBConvUTF32straight::WC2MB(char *buf, const wchar_t *psz, size_t n) con len += sizeof(wxUint32); psz += pa; } - if (buf && len<=n-sizeof(wxUint32)) *(wxUint32*)buf=0; + + if (buf && len<=n-sizeof(wxUint32)) + *(wxUint32*)buf=0; return len; } @@ -749,7 +691,9 @@ size_t wxMBConvUTF32swap::MB2WC(wchar_t *buf, const char *psz, size_t n) const len += pa; psz += sizeof(wxUint32); } - if (buf && lenMB2WC(buf,psz,n) : (size_t)-1; } - - size_t WC2MB(char *buf, const wchar_t *psz, size_t n) - { return work ? work->WC2MB(buf,psz,n) : (size_t)-1; } - - bool usable() const - { return work!=NULL; } -public: - wxMBConv*work; -}; - - // ============================================================================ // The classes doing conversion using the iconv_xxx() functions // ============================================================================ @@ -941,19 +854,19 @@ public: #define ICONV_CHAR_CAST(x) ((ICONV_CONST char **)(x)) // ---------------------------------------------------------------------------- -// IC_CharSet: encapsulates an iconv character set +// wxMBConv_iconv: encapsulates an iconv character set // ---------------------------------------------------------------------------- -class IC_CharSet : public wxCharacterSet +class wxMBConv_iconv : public wxMBConv { public: - IC_CharSet(const wxChar *name); - virtual ~IC_CharSet(); + wxMBConv_iconv(const wxChar *name); + virtual ~wxMBConv_iconv(); - virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n); - virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n); + virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const; + virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const; - bool usable() const + bool IsOk() const { return (m2w != (iconv_t)-1) && (w2m != (iconv_t)-1); } protected: @@ -963,7 +876,7 @@ protected: w2m; private: - // the name (for iconv_open()) of a wide char charset - if none is + // 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; @@ -972,10 +885,10 @@ private: static bool ms_wcNeedsSwap; }; -const char *IC_CharSet::ms_wcCharsetName = NULL; -bool IC_CharSet::ms_wcNeedsSwap = FALSE; +const char *wxMBConv_iconv::ms_wcCharsetName = NULL; +bool wxMBConv_iconv::ms_wcNeedsSwap = false; -IC_CharSet::IC_CharSet(const wxChar *name) +wxMBConv_iconv::wxMBConv_iconv(const wxChar *name) { // Do it the hard way char cname[100]; @@ -985,7 +898,7 @@ IC_CharSet::IC_CharSet(const wxChar *name) // check for charset that represents wchar_t: if (ms_wcCharsetName == NULL) { - ms_wcNeedsSwap = FALSE; + ms_wcNeedsSwap = false; // try charset with explicit bytesex info (e.g. "UCS-4LE"): ms_wcCharsetName = WC_NAME_BEST; @@ -1062,7 +975,7 @@ IC_CharSet::IC_CharSet(const wxChar *name) } } -IC_CharSet::~IC_CharSet() +wxMBConv_iconv::~wxMBConv_iconv() { if ( m2w != (iconv_t)-1 ) iconv_close(m2w); @@ -1070,7 +983,7 @@ IC_CharSet::~IC_CharSet() iconv_close(w2m); } -size_t IC_CharSet::MB2WC(wchar_t *buf, const char *psz, size_t n) +size_t wxMBConv_iconv::MB2WC(wchar_t *buf, const char *psz, size_t n) const { size_t inbuf = strlen(psz); size_t outbuf = n * SIZEOF_WCHAR_T; @@ -1127,7 +1040,7 @@ size_t IC_CharSet::MB2WC(wchar_t *buf, const char *psz, size_t n) return res; } -size_t IC_CharSet::WC2MB(char *buf, const wchar_t *psz, size_t n) +size_t wxMBConv_iconv::WC2MB(char *buf, const wchar_t *psz, size_t n) const { size_t inbuf = wxWcslen(psz) * SIZEOF_WCHAR_T; size_t outbuf = n; @@ -1192,30 +1105,36 @@ size_t IC_CharSet::WC2MB(char *buf, const wchar_t *psz, size_t n) #endif // HAVE_ICONV + // ============================================================================ // Win32 conversion classes // ============================================================================ -#if defined(__WIN32__) && !defined(__WXMICROWIN__) && !defined(__WXUNIVERSAL__) +#ifdef wxHAVE_WIN32_MB2WC // from utils.cpp extern WXDLLIMPEXP_BASE long wxCharsetToCodepage(const wxChar *charset); extern WXDLLIMPEXP_BASE long wxEncodingToCodepage(wxFontEncoding encoding); -class CP_CharSet : public wxCharacterSet +class wxMBConv_win32 : public wxMBConv { public: - CP_CharSet(const wxChar* name) - { - m_CodePage = wxCharsetToCodepage(name); - } + wxMBConv_win32() + { + m_CodePage = CP_ACP; + } - CP_CharSet(wxFontEncoding encoding) - { - m_CodePage = wxEncodingToCodepage(encoding); - } + wxMBConv_win32(const wxChar* name) + { + m_CodePage = wxCharsetToCodepage(name); + } + + wxMBConv_win32(wxFontEncoding encoding) + { + m_CodePage = wxEncodingToCodepage(encoding); + } - size_t MB2WC(wchar_t *buf, const char *psz, size_t n) + size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const { const size_t len = ::MultiByteToWideChar ( @@ -1227,36 +1146,246 @@ public: buf ? n : 0 // size of output buffer ); - // note that it returns # of written chars for buf != NULL and *size* - // of the needed buffer for buf == NULL - return len ? (buf ? len : len - 1) : (size_t)-1; + // 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; } - size_t WC2MB(char *buf, const wchar_t *psz, size_t n) + size_t WC2MB(char *buf, const wchar_t *pwz, size_t n) const { + /* + we have a problem here: by default, WideCharToMultiByte() may + replace characters unrepresentable in the target code page with bad + quality approximations such as turning "1/2" symbol (U+00BD) into + "1" for the code pages which don't have it and we, obviously, want + to avoid this at any price + + the trouble is that this function does it _silently_, i.e. it won't + even tell us whether it did or not... Win98/2000 and higher provide + WC_NO_BEST_FIT_CHARS but it doesn't work for the older systems and + we have to resort to a round trip, i.e. check that converting back + results in the same string -- this is, of course, expensive but + otherwise we simply can't be sure to not garble the data. + */ + + // determine if we can rely on WC_NO_BEST_FIT_CHARS: according to MSDN + // it doesn't work with CJK encodings (which we test for rather roughly + // here...) nor with UTF-7/8 nor, of course, with Windows versions not + // supporting it + BOOL usedDef wxDUMMY_INITIALIZE(false), + *pUsedDef; + int flags; + if ( CanUseNoBestFit() && m_CodePage < 50000 ) + { + // it's our lucky day + flags = WC_NO_BEST_FIT_CHARS; + pUsedDef = &usedDef; + } + else // old system or unsupported encoding + { + flags = 0; + pUsedDef = NULL; + } + const size_t len = ::WideCharToMultiByte ( m_CodePage, // code page - 0, // flags (none) - psz, // input string + flags, // either none or no best fit + pwz, // input string -1, // it is (wide) NUL-terminated buf, // output buffer buf ? n : 0, // and its size NULL, // default "replacement" char - NULL // [out] was it used? + pUsedDef // [out] was it used? ); - // see the comment above! - return len ? (buf ? len : len - 1) : (size_t)-1; + if ( !len ) + { + // function totally failed + return (size_t)-1; + } + + // if we were really converting, check if we succeeded + if ( buf ) + { + if ( flags ) + { + // check if the conversion failed, i.e. if any replacements + // were done + if ( usedDef ) + return (size_t)-1; + } + else // we must resort to double tripping... + { + wxWCharBuffer wcBuf(n); + if ( MB2WC(wcBuf.data(), buf, n) == (size_t)-1 || + 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; + } + } + } + + // see the comment above for the reason of "len - 1" + return len - 1; } - bool usable() const - { return m_CodePage != -1; } + bool IsOk() const { return m_CodePage != -1; } + +private: + static bool CanUseNoBestFit() + { + static int s_isWin98Or2k = -1; + + if ( s_isWin98Or2k == -1 ) + { + int verMaj, verMin; + switch ( wxGetOsVersion(&verMaj, &verMin) ) + { + case wxWIN95: + s_isWin98Or2k = verMaj >= 4 && verMin >= 10; + break; + + case wxWINDOWS_NT: + s_isWin98Or2k = verMaj >= 5; + break; + + default: + // unknown, be conseravtive by default + s_isWin98Or2k = 0; + } + + wxASSERT_MSG( s_isWin98Or2k != -1, _T("should be set above") ); + } + + return s_isWin98Or2k == 1; + } -public: long m_CodePage; }; -#endif // defined(__WIN32__) && !defined(__WXMICROWIN__) && !defined(__WXUNIVERSAL__) + +#endif // wxHAVE_WIN32_MB2WC + +// ============================================================================ +// Mac conversion classes +// ============================================================================ + +#if defined(__WXMAC__) && defined(TARGET_CARBON) + +class wxMBConv_mac : public wxMBConv +{ +public: + wxMBConv_mac() + { + Init(CFStringGetSystemEncoding()) ; + } + + wxMBConv_mac(const wxChar* name) + { + Init( wxMacGetSystemEncFromFontEnc(wxFontMapper::Get()->CharsetToEncoding(name, FALSE) ) ) ; + } + + wxMBConv_mac(wxFontEncoding encoding) + { + Init( wxMacGetSystemEncFromFontEnc(encoding) ); + } + + ~wxMBConv_mac() + { + OSStatus status = noErr ; + status = TECDisposeConverter(m_MB2WC_converter); + status = TECDisposeConverter(m_WC2MB_converter); + } + + + void Init( TextEncodingBase encoding) + { + OSStatus status = noErr ; + m_char_encoding = encoding ; +#if SIZEOF_WCHAR_T == 4 + m_unicode_encoding = CreateTextEncoding(kTextEncodingUnicodeDefault,0,kUnicode32BitFormat) ; +#else + m_unicode_encoding = CreateTextEncoding(kTextEncodingUnicodeDefault,0,kUnicode16BitFormat) ; +#endif + status = TECCreateConverter(&m_MB2WC_converter, + m_char_encoding, + m_unicode_encoding); + status = TECCreateConverter(&m_WC2MB_converter, + m_unicode_encoding, + m_char_encoding); + } + + size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const + { + OSStatus status = noErr ; + ByteCount byteOutLen ; + ByteCount byteInLen = strlen(psz) ; + wchar_t *tbuf = NULL ; + + if (buf == NULL) + { + n = byteInLen ; + tbuf = (wchar_t*) malloc( n * SIZEOF_WCHAR_T) ; + } + + ByteCount byteBufferLen = n * SIZEOF_WCHAR_T ; + status = TECConvertText(m_MB2WC_converter, (ConstTextPtr) psz , byteInLen, &byteInLen, + (TextPtr) (buf ? buf : tbuf) , byteBufferLen, &byteOutLen); + + if ( buf == NULL ) + free(tbuf) ; + + size_t res = byteOutLen / SIZEOF_WCHAR_T ; + if ( buf && res < n) + buf[res] = 0; + + return res ; + } + + size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const + { + OSStatus status = noErr ; + ByteCount byteOutLen ; + ByteCount byteInLen = wxWcslen(psz) * SIZEOF_WCHAR_T ; + + char *tbuf = NULL ; + + if (buf == NULL) + { + // worst case + n = byteInLen * 2 ; + tbuf = (char*) malloc( n ) ; + } + + ByteCount byteBufferLen = n ; + status = TECConvertText(m_WC2MB_converter, (ConstTextPtr) psz , byteInLen, &byteInLen, + (TextPtr) ( buf ? buf : tbuf ) , byteBufferLen, &byteOutLen); + + if ( buf == NULL ) + free(tbuf) ; + + size_t res = byteOutLen ; + if ( buf && res < n) + buf[res] = 0; + + return res ; + } + + bool IsOk() const + { return m_MB2WC_converter != NULL && m_WC2MB_converter != NULL ; } + +private: + TECObjectRef m_MB2WC_converter ; + TECObjectRef m_WC2MB_converter ; + + TextEncodingBase m_char_encoding ; + TextEncodingBase m_unicode_encoding ; +}; + +#endif // defined(__WXMAC__) && defined(TARGET_CARBON) // ============================================================================ // wxEncodingConverter based conversion classes @@ -1264,7 +1393,7 @@ public: #if wxUSE_FONTMAP -class EC_CharSet : public wxCharacterSet +class wxMBConv_wxwin : public wxMBConv { private: void Init() @@ -1276,24 +1405,24 @@ private: public: // temporarily just use wxEncodingConverter stuff, // so that it works while a better implementation is built - EC_CharSet(const wxChar* name) + wxMBConv_wxwin(const wxChar* name) { if (name) - m_enc = wxFontMapper::Get()->CharsetToEncoding(name, FALSE); + m_enc = wxFontMapper::Get()->CharsetToEncoding(name, false); else m_enc = wxFONTENCODING_SYSTEM; Init(); } - EC_CharSet(wxFontEncoding enc) + wxMBConv_wxwin(wxFontEncoding enc) { m_enc = enc; Init(); } - size_t MB2WC(wchar_t *buf, const char *psz, size_t WXUNUSED(n)) + size_t MB2WC(wchar_t *buf, const char *psz, size_t WXUNUSED(n)) const { size_t inbuf = strlen(psz); if (buf) @@ -1301,7 +1430,7 @@ public: return inbuf; } - size_t WC2MB(char *buf, const wchar_t *psz, size_t WXUNUSED(n)) + size_t WC2MB(char *buf, const wchar_t *psz, size_t WXUNUSED(n)) const { const size_t inbuf = wxWcslen(psz); if (buf) @@ -1310,7 +1439,7 @@ public: return inbuf; } - bool usable() const { return m_ok; } + bool IsOk() const { return m_ok; } public: wxFontEncoding m_enc; @@ -1319,165 +1448,43 @@ public: // were we initialized successfully? bool m_ok; - DECLARE_NO_COPY_CLASS(EC_CharSet) + DECLARE_NO_COPY_CLASS(wxMBConv_wxwin) }; #endif // wxUSE_FONTMAP -// ---------------------------------------------------------------------------- -// the function creating the wxCharacterSet for the specified charset on the -// current system, trying all possibilities -// -// it uses the name if it is given or encoding if name == NULL -// ---------------------------------------------------------------------------- - -static wxCharacterSet * -wxGetCharacterSet(const wxChar *name, wxFontEncoding encoding) -{ - // check for the special case of ASCII charset - if ( (!name && encoding == wxFONTENCODING_DEFAULT) -#if wxUSE_FONTMAP - || (name && wxFontMapper::Get()-> - CharsetToEncoding(name) == wxFONTENCODING_DEFAULT) -#endif // wxUSE_FONTMAP - ) - { - // don't convert at all - return NULL; - } - - wxCharacterSet *cset = NULL; - - if (name) - { - if((wxStricmp(name, wxT("UTF8")) == 0) || - (wxStricmp(name, wxT("UTF-8")) == 0) || - encoding == wxFONTENCODING_UTF8 ) - { - cset = new ID_CharSet(&wxConvUTF8); - } - else if((wxStricmp(name, wxT("UTF16")) == 0) || - (wxStricmp(name, wxT("UTF-16")) == 0) || - encoding == wxFONTENCODING_UTF16 ) - { -#ifdef WORDS_BIGENDIAN - cset = new ID_CharSet(&wxConvUTF16BE); -#else - cset = new ID_CharSet(&wxConvUTF16LE); -#endif - } - else if((wxStricmp(name, wxT("UTF16BE")) == 0) || - (wxStricmp(name, wxT("UTF-16BE")) == 0) || - encoding == wxFONTENCODING_UTF16BE ) - { - cset = new ID_CharSet(&wxConvUTF16BE); - } - else if((wxStricmp(name, wxT("UTF16LE")) == 0) || - (wxStricmp(name, wxT("UTF-16LE")) == 0) || - encoding == wxFONTENCODING_UTF16LE ) - { - cset = new ID_CharSet(&wxConvUTF16LE); - } - else if((wxStricmp(name, wxT("UTF32")) == 0) || - (wxStricmp(name, wxT("UTF-32")) == 0) || - (wxStricmp(name, wxT("UCS4")) == 0) || - (wxStricmp(name, wxT("UCS-4")) == 0) || - encoding == wxFONTENCODING_UTF32 ) - { -#ifdef WORDS_BIGENDIAN - cset = new ID_CharSet(&wxConvUTF32BE); -#else - cset = new ID_CharSet(&wxConvUTF32LE); -#endif - } - else if((wxStricmp(name, wxT("UTF32BE")) == 0) || - (wxStricmp(name, wxT("UTF-32BE")) == 0) || - (wxStricmp(name, wxT("UCS4BE")) == 0) || - (wxStricmp(name, wxT("UCS-4BE")) == 0) || - encoding == wxFONTENCODING_UTF32BE ) - { - cset = new ID_CharSet(&wxConvUTF32BE); - } - else if((wxStricmp(name, wxT("UTF32LE")) == 0) || - (wxStricmp(name, wxT("UTF-32LE")) == 0) || - (wxStricmp(name, wxT("UCS4LE")) == 0) || - (wxStricmp(name, wxT("UCS-4LE")) == 0) || - encoding == wxFONTENCODING_UTF32 ) - { - cset = new ID_CharSet(&wxConvUTF32LE); - } -#ifdef HAVE_ICONV - else - { - cset = new IC_CharSet(name); - } -#endif // HAVE_ICONV - } - - // it can only be NULL in this case -#ifndef HAVE_ICONV - if ( cset ) -#endif // !HAVE_ICONV - { - if ( cset->usable() ) - return cset; - - delete cset; - cset = NULL; - } - -#if defined(__WIN32__) && !defined(__WXMICROWIN__) && !defined(__WXUNIVERSAL__) - cset = name ? new CP_CharSet(name) : new CP_CharSet(encoding); - if ( cset->usable() ) - return cset; - - delete cset; - cset = NULL; -#endif // defined(__WIN32__) && !defined(__WXMICROWIN__) && !defined(__WXUNIVERSAL__) - -#if wxUSE_FONTMAP - cset = name ? new EC_CharSet(name) : new EC_CharSet(encoding); - if ( cset->usable() ) - return cset; - - delete cset; - cset = NULL; -#endif // wxUSE_FONTMAP - - wxLogError(_("Cannot convert from encoding '%s'!"), - name ? name - : -#if wxUSE_FONTMAP - wxFontMapper::GetEncodingDescription(encoding).c_str() -#else // !wxUSE_FONTMAP - wxString::Format(_T("%s"), encoding).c_str() -#endif // wxUSE_FONTMAP/!wxUSE_FONTMAP - ); - - return NULL; -} - // ============================================================================ // wxCSConv implementation // ============================================================================ void wxCSConv::Init() { - m_name = (wxChar *)NULL; - m_cset = (wxCharacterSet *) NULL; - m_deferred = TRUE; + m_name = NULL; + m_convReal = NULL; + m_deferred = true; } wxCSConv::wxCSConv(const wxChar *charset) { Init(); - m_encoding = wxFONTENCODING_DEFAULT; - SetName(charset); + if ( charset ) + { + SetName(charset); + } + + m_encoding = wxFONTENCODING_SYSTEM; } wxCSConv::wxCSConv(wxFontEncoding encoding) { + if ( encoding == wxFONTENCODING_MAX || encoding == wxFONTENCODING_DEFAULT ) + { + wxFAIL_MSG( _T("invalid encoding value in wxCSConv ctor") ); + + encoding = wxFONTENCODING_SYSTEM; + } + Init(); m_encoding = encoding; @@ -1510,10 +1517,10 @@ wxCSConv& wxCSConv::operator=(const wxCSConv& conv) void wxCSConv::Clear() { free(m_name); - delete m_cset; + delete m_convReal; m_name = NULL; - m_cset = NULL; + m_convReal = NULL; } void wxCSConv::SetName(const wxChar *charset) @@ -1521,39 +1528,175 @@ void wxCSConv::SetName(const wxChar *charset) if (charset) { m_name = wxStrdup(charset); - m_deferred = TRUE; + m_deferred = true; + } +} + +wxMBConv *wxCSConv::DoCreate() const +{ + // 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 ) + { + // don't convert at all + return NULL; + } + + // we trust OS to do conversion better than we can so try external + // conversion methods first + // + // the full order is: + // 1. OS conversion (iconv() under Unix or Win32 API) + // 2. hard coded conversions for UTF + // 3. wxEncodingConverter as fall back + + // step (1) +#ifdef HAVE_ICONV +#if !wxUSE_FONTMAP + if ( m_name ) +#endif // !wxUSE_FONTMAP + { + wxString name(m_name); + +#if wxUSE_FONTMAP + if ( name.empty() ) + name = wxFontMapper::Get()->GetEncodingName(m_encoding); +#endif // wxUSE_FONTMAP + + wxMBConv_iconv *conv = new wxMBConv_iconv(name); + if ( conv->IsOk() ) + return conv; + + delete conv; + } +#endif // HAVE_ICONV + +#ifdef wxHAVE_WIN32_MB2WC + { + wxMBConv_win32 *conv = m_name ? new wxMBConv_win32(m_name) + : new wxMBConv_win32(m_encoding); + if ( conv->IsOk() ) + return conv; + + delete conv; + } +#endif // wxHAVE_WIN32_MB2WC +#if defined(__WXMAC__) + { + if ( m_name || ( m_encoding < wxFONTENCODING_UTF16BE ) ) + { + + wxMBConv_mac *conv = m_name ? new wxMBConv_mac(m_name) + : new wxMBConv_mac(m_encoding); + if ( conv->IsOk() ) + return conv; + + delete conv; + } + } +#endif + // step (2) + wxFontEncoding enc = m_encoding; +#if wxUSE_FONTMAP + if ( enc == wxFONTENCODING_SYSTEM && m_name ) + { + // use "false" to suppress interactive dialogs -- we can be called from + // anywhere and popping up a dialog from here is the last thing we want to + // do + enc = wxFontMapper::Get()->CharsetToEncoding(m_name, false); + } +#endif // wxUSE_FONTMAP + + switch ( enc ) + { + case wxFONTENCODING_UTF7: + return new wxMBConvUTF7; + + case wxFONTENCODING_UTF8: + return new wxMBConvUTF8; + + case wxFONTENCODING_UTF16BE: + return new wxMBConvUTF16BE; + + case wxFONTENCODING_UTF16LE: + return new wxMBConvUTF16LE; + + case wxFONTENCODING_UTF32BE: + return new wxMBConvUTF32BE; + + case wxFONTENCODING_UTF32LE: + return new wxMBConvUTF32LE; + + default: + // nothing to do but put here to suppress gcc warnings + ; + } + + // step (3) +#if wxUSE_FONTMAP + { + wxMBConv_wxwin *conv = m_name ? new wxMBConv_wxwin(m_name) + : new wxMBConv_wxwin(m_encoding); + if ( conv->IsOk() ) + return conv; + + delete conv; } +#endif // wxUSE_FONTMAP + + // 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. + static bool alreadyLoggingError = false; + if (!alreadyLoggingError) + { + alreadyLoggingError = true; + wxLogError(_("Cannot convert from the charset '%s'!"), + m_name ? m_name + : +#if wxUSE_FONTMAP + wxFontMapper::GetEncodingDescription(m_encoding).c_str() +#else // !wxUSE_FONTMAP + wxString::Format(_("encoding %s"), m_encoding).c_str() +#endif // wxUSE_FONTMAP/!wxUSE_FONTMAP + ); + alreadyLoggingError = false; + } + + return NULL; } -void wxCSConv::LoadNow() +void wxCSConv::CreateConvIfNeeded() const { if ( m_deferred ) { - // it would probably be better to make GetSystemEncodingName() always - // available (i.e. even when wxUSE_INTL == 0)? + wxCSConv *self = (wxCSConv *)this; // const_cast + #if wxUSE_INTL - if ( !m_name && m_encoding == wxFONTENCODING_DEFAULT ) + // 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 ) { - wxString name = wxLocale::GetSystemEncodingName(); - if ( !name.empty() ) - { - SetName(name); - } + self->m_name = wxStrdup(wxLocale::GetSystemEncodingName()); } #endif // wxUSE_INTL - // wxGetCharacterSet() complains about NULL name - m_cset = wxGetCharacterSet(m_name, m_encoding); - m_deferred = FALSE; + self->m_convReal = DoCreate(); + self->m_deferred = false; } } size_t wxCSConv::MB2WC(wchar_t *buf, const char *psz, size_t n) const { - ((wxCSConv *)this)->LoadNow(); // discard constness + CreateConvIfNeeded(); - if (m_cset) - return m_cset->MB2WC(buf, psz, n); + if (m_convReal) + return m_convReal->MB2WC(buf, psz, n); // latin-1 (direct) size_t len = strlen(psz); @@ -1569,22 +1712,65 @@ size_t wxCSConv::MB2WC(wchar_t *buf, const char *psz, size_t n) const size_t wxCSConv::WC2MB(char *buf, const wchar_t *psz, size_t n) const { - ((wxCSConv *)this)->LoadNow(); // discard constness + CreateConvIfNeeded(); - if (m_cset) - return m_cset->WC2MB(buf, psz, n); + if (m_convReal) + return m_convReal->WC2MB(buf, psz, n); // latin-1 (direct) const size_t len = wxWcslen(psz); if (buf) { for (size_t c = 0; c <= len; c++) - buf[c] = (psz[c] > 0xff) ? '?' : psz[c]; + { + if (psz[c] > 0xFF) + return (size_t)-1; + buf[c] = psz[c]; + } + } + else + { + for (size_t c = 0; c <= len; c++) + { + if (psz[c] > 0xFF) + return (size_t)-1; + } } return len; } -#endif // wxUSE_WCHAR_T +// ---------------------------------------------------------------------------- +// globals +// ---------------------------------------------------------------------------- + +#ifdef __WINDOWS__ + static wxMBConv_win32 wxConvLibcObj; +#else + static wxMBConvLibc wxConvLibcObj; +#endif + +static wxCSConv wxConvLocalObj(wxFONTENCODING_SYSTEM); +static wxCSConv wxConvISO8859_1Obj(wxFONTENCODING_ISO8859_1); +static wxMBConvUTF7 wxConvUTF7Obj; +static wxMBConvUTF8 wxConvUTF8Obj; + + +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; + +#else // !wxUSE_WCHAR_T + +// stand-ins in absence of wchar_t +WXDLLIMPEXP_DATA_BASE(wxMBConv) wxConvLibc, + wxConvISO8859_1, + wxConvLocal, + wxConvUTF8; + +#endif // wxUSE_WCHAR_T/!wxUSE_WCHAR_T