X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/264b3fc80fe33d1a239ad8e904ee9b318055e70d..8aa2cea1d03f39245f54deec0c4fe9ef49b5d910:/src/common/strconv.cpp diff --git a/src/common/strconv.cpp b/src/common/strconv.cpp index 900b6814a5..75c6201df8 100644 --- a/src/common/strconv.cpp +++ b/src/common/strconv.cpp @@ -1,11 +1,11 @@ ///////////////////////////////////////////////////////////////////////////// // Name: strconv.cpp // Purpose: Unicode conversion classes -// Author: Ove Kaaven, Robert Roebling, Vadim Zeitlin +// Author: Ove Kaaven, Robert Roebling, Vadim Zeitlin, Vaclav Slavik // Modified by: // Created: 29/01/98 // RCS-ID: $Id$ -// Copyright: (c) 1999 Ove Kaaven, Robert Roebling, Vadim Zeitlin +// Copyright: (c) 1999 Ove Kaaven, Robert Roebling, Vadim Zeitlin, Vaclav Slavik // Licence: wxWindows license ///////////////////////////////////////////////////////////////////////////// @@ -28,8 +28,13 @@ #pragma hdrstop #endif +#ifndef WX_PRECOMP + #include "wx/intl.h" + #include "wx/log.h" +#endif // WX_PRECOMP + #ifdef __WXMSW__ - #include "wx/msw/private.h" + #include "wx/msw/private.h" #endif #include @@ -37,33 +42,70 @@ #include #include -#ifdef __SALFORDC__ - #include +#include "wx/module.h" +#include "wx/strconv.h" + +// ---------------------------------------------------------------------------- +// globals +// ---------------------------------------------------------------------------- + +#if wxUSE_WCHAR_T + WXDLLEXPORT_DATA(wxMBConv) wxConvLibc; + WXDLLEXPORT_DATA(wxCSConv) wxConvLocal((const wxChar *)NULL); + WXDLLEXPORT_DATA(wxCSConv) wxConvISO8859_1(_T("iso-8859-1")); +#else + // stand-ins in absence of wchar_t + WXDLLEXPORT_DATA(wxMBConv) wxConvLibc, + wxConvFile, + wxConvISO8859_1, + wxConvLocal, + wxConvUTF8; +#endif // wxUSE_WCHAR_T + +WXDLLEXPORT_DATA(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) + + +// ---------------------------------------------------------------------------- +// headers +// ---------------------------------------------------------------------------- -#ifdef HAVE_ICONV_H - #include +#if wxUSE_WCHAR_T + +#ifdef __SALFORDC__ + #include #endif -#ifdef __WXMSW__ - #include +#ifdef HAVE_ICONV + #include #endif -#include "wx/debug.h" -#include "wx/strconv.h" -#include "wx/intl.h" -#include "wx/log.h" +#include "wx/encconv.h" +#include "wx/fontmap.h" + +// ---------------------------------------------------------------------------- +// macros +// ---------------------------------------------------------------------------- -#if defined(WORDS_BIGENDIAN) || defined(__STDC_ISO_10646__) -#define BSWAP_UCS4(str, len) -#define BSWAP_UCS2(str, len) -#else #define BSWAP_UCS4(str, len) { unsigned _c; for (_c=0; _c=0x110000) @@ -112,14 +160,14 @@ static size_t encode_utf16(wxUint32 input, wxUint16 *output) { if (output) { - *output++ = (input >> 10)+0xd7c0; - *output++ = (input&0x3ff)+0xdc00; + *output++ = (wchar_t) ((input >> 10)+0xd7c0); + *output++ = (wchar_t) ((input&0x3ff)+0xdc00); } return 2; } } -static size_t decode_utf16(const wxUint16* input, wxUint32& output) +static size_t decode_utf16(const wchar_t* input, wxUint32& output) { if ((*input<0xd800) || (*input>0xdfff)) { @@ -144,63 +192,87 @@ static size_t decode_utf16(const wxUint16* input, wxUint32& output) // wxMBConv // ---------------------------------------------------------------------------- -WXDLLEXPORT_DATA(wxMBConv) wxConvLibc; +#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) + if ( psz ) { - size_t nLen = MB2WC((wchar_t *) NULL, psz, 0); - if (nLen == (size_t)-1) - return wxWCharBuffer((wchar_t *) NULL); - wxWCharBuffer buf(nLen); - MB2WC((wchar_t *)(const wchar_t *) buf, psz, nLen); - return buf; + // calculate the length of the buffer needed first + size_t nLen = MB2WC(NULL, psz, 0); + if ( nLen != (size_t)-1 ) + { + // now do the actual conversion + wxWCharBuffer buf(nLen); + MB2WC(buf.data(), psz, nLen + 1); // with the trailing NUL + + return buf; + } } - else - return wxWCharBuffer((wchar_t *) NULL); + + wxWCharBuffer buf((wchar_t *)NULL); + + return buf; } -const wxCharBuffer wxMBConv::cWC2MB(const wchar_t *psz) const +const wxCharBuffer wxMBConv::cWC2MB(const wchar_t *pwz) const { - if (psz) + if ( pwz ) { - size_t nLen = WC2MB((char *) NULL, psz, 0); - if (nLen == (size_t)-1) - return wxCharBuffer((char *) NULL); - wxCharBuffer buf(nLen); - WC2MB((char *)(const char *) buf, psz, nLen); - return buf; - } - else - return wxCharBuffer((char *) NULL); -} - -// ---------------------------------------------------------------------------- -// standard file conversion -// ---------------------------------------------------------------------------- + size_t nLen = WC2MB(NULL, pwz, 0); + if ( nLen != (size_t)-1 ) + { + wxCharBuffer buf(nLen); + WC2MB(buf.data(), pwz, nLen + 1); -WXDLLEXPORT_DATA(wxMBConvFile) wxConvFile; + return buf; + } + } -// just use the libc conversion for now -size_t wxMBConvFile::MB2WC(wchar_t *buf, const char *psz, size_t n) const -{ - return wxMB2WC(buf, psz, n); -} + wxCharBuffer buf((char *)NULL); -size_t wxMBConvFile::WC2MB(char *buf, const wchar_t *psz, size_t n) const -{ - return wxWC2MB(buf, psz, n); + return buf; } // ---------------------------------------------------------------------------- @@ -336,11 +408,11 @@ size_t wxMBConvUTF8::MB2WC(wchar_t *buf, const char *psz, size_t n) const if (buf) buf += pa; len += pa; -#else +#else // !WC_UTF16 if (buf) *buf++ = res; len++; -#endif +#endif // WC_UTF16/!WC_UTF16 } } } @@ -357,7 +429,7 @@ size_t wxMBConvUTF8::WC2MB(char *buf, const wchar_t *psz, size_t n) const { wxUint32 cc; #ifdef WC_UTF16 - size_t pa = decode_utf16((wchar_t*) psz,cc); + size_t pa = decode_utf16(psz, cc); psz += (pa == (size_t)-1) ? 1 : pa; #else cc=(*psz++) & 0x7fffffff; @@ -368,7 +440,7 @@ size_t wxMBConvUTF8::WC2MB(char *buf, const wchar_t *psz, size_t n) const { // plain ASCII char if (buf) - *buf++ = cc; + *buf++ = (char) cc; len++; } @@ -377,87 +449,46 @@ size_t wxMBConvUTF8::WC2MB(char *buf, const wchar_t *psz, size_t n) const len += cnt + 1; if (buf) { - *buf++ = (-128 >> cnt) | ((cc >> (cnt * 6)) & (0x3f >> cnt)); + *buf++ = (char) ((-128 >> cnt) | ((cc >> (cnt * 6)) & (0x3f >> cnt))); while (cnt--) - *buf++ = 0x80 | ((cc >> (cnt * 6)) & 0x3f); + *buf++ = (char) (0x80 | ((cc >> (cnt * 6)) & 0x3f)); } } } if (buf && (len wxConvUTF8) -// - move wxEncodingConverter meat in here - -#ifdef __WIN32__ -#include "wx/msw/registry.h" -// this should work if M$ Internet Exploiter is installed -static long CharsetToCodepage(const wxChar *name) -{ - if (!name) - return GetACP(); - - long CP=-1; - - wxString cn(name); - do { - wxString path(wxT("MIME\\Database\\Charset\\")); - path += cn; - wxRegKey key(wxRegKey::HKCR, path); - - if (!key.Exists()) continue; - - // two cases: either there's an AliasForCharset string, - // or there are Codepage and InternetEncoding dwords. - // The InternetEncoding gives us the actual encoding, - // the Codepage just says which Windows character set to - // use when displaying the data. - if (key.HasValue(wxT("InternetEncoding")) && - key.QueryValue(wxT("InternetEncoding"), &CP)) break; - - // no encoding, see if it's an alias - if (!key.HasValue(wxT("AliasForCharset")) || - !key.QueryValue(wxT("AliasForCharset"), cn)) break; - } while (1); - - return CP; -} -#endif - class wxCharacterSet { public: - wxCharacterSet(const wxChar*name) - : cname(name) {} - virtual ~wxCharacterSet() - {} - virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) - { return (size_t)-1; } - virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n) - { return (size_t)-1; } - virtual bool usable() - { return FALSE; } + wxCharacterSet(const wxChar*name) : cname(name) {} + virtual ~wxCharacterSet() {} + virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) = 0; + virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n) = 0; + virtual bool usable() const = 0; public: const wxChar*cname; }; +// ---------------------------------------------------------------------------- +// ID_CharSet: implementation of wxCharacterSet using an existing wxMBConv +// ---------------------------------------------------------------------------- + class ID_CharSet : public wxCharacterSet { public: - ID_CharSet(const wxChar *name,wxMBConv *cnv) + ID_CharSet(const wxChar *name, wxMBConv *cnv) : wxCharacterSet(name), work(cnv) {} size_t MB2WC(wchar_t *buf, const char *psz, size_t n) @@ -466,14 +497,18 @@ public: size_t WC2MB(char *buf, const wchar_t *psz, size_t n) { return work ? work->WC2MB(buf,psz,n) : (size_t)-1; } - bool usable() + bool usable() const { return work!=NULL; } public: wxMBConv*work; }; -#ifdef HAVE_ICONV_H +// ============================================================================ +// The classes doing conversion using the iconv_xxx() functions +// ============================================================================ + +#ifdef HAVE_ICONV // VS: glibc 2.1.3 is broken in that iconv() conversion to/from UCS4 fails with E2BIG // if output buffer is _exactly_ as big as needed. Such case is (unless there's @@ -489,177 +524,343 @@ public: #define ICONV_FAILED(cres, bufLeft) (cres == (size_t)-1) #endif +#define ICONV_CHAR_CAST(x) ((ICONV_CONST char **)(x)) + +// ---------------------------------------------------------------------------- +// IC_CharSet: encapsulates an iconv character set +// ---------------------------------------------------------------------------- + class IC_CharSet : public wxCharacterSet { public: - IC_CharSet(const wxChar *name) - : wxCharacterSet(name) + IC_CharSet(const wxChar *name); + virtual ~IC_CharSet(); + + 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); + + bool usable() const + { return (m2w != (iconv_t)-1) && (w2m != (iconv_t)-1); } + +protected: + // the iconv handlers used to translate from multibyte to wide char and in + // the other direction + iconv_t m2w, + w2m; + +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; + + // true if the wide char encoding we use (i.e. ms_wcCharsetName) has + // different endian-ness than the native one + static bool ms_wcNeedsSwap; +}; + +const char *IC_CharSet::ms_wcCharsetName = NULL; +bool IC_CharSet::ms_wcNeedsSwap = FALSE; + +IC_CharSet::IC_CharSet(const wxChar *name) + : wxCharacterSet(name) +{ + // Do it the hard way + char cname[100]; + for (size_t i = 0; i < wxStrlen(name)+1; i++) + cname[i] = (char) name[i]; + + // check for charset that represents wchar_t: + if (ms_wcCharsetName == NULL) { - m2w = iconv_open(WC_NAME, wxConvLibc.cWX2MB(cname)); - w2m = iconv_open(wxConvLibc.cWX2MB(cname), WC_NAME); + ms_wcNeedsSwap = FALSE; + + // try charset with explicit bytesex info (e.g. "UCS-4LE"): + ms_wcCharsetName = WC_NAME_BEST; + m2w = iconv_open(ms_wcCharsetName, cname); + + if (m2w == (iconv_t)-1) + { + // try charset w/o bytesex info (e.g. "UCS4") + // and check for bytesex ourselves: + ms_wcCharsetName = WC_NAME; + m2w = iconv_open(ms_wcCharsetName, cname); + + // 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); + } + + if (m2w != (iconv_t)-1) + { + 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 + { + ms_wcNeedsSwap = wbuf[0] != (wchar_t)buf[0]; + } + } + else + { + ms_wcCharsetName = NULL; + + // VS: we must not output an error here, since wxWindows 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( + } + } + wxLogTrace(wxT("strconv"), wxT("wchar_t charset is '%s', needs swap: %i"), ms_wcCharsetName, ms_wcNeedsSwap); + } + else // we already have ms_wcCharsetName + { + m2w = iconv_open(ms_wcCharsetName, cname); } - ~IC_CharSet() + // NB: don't ever pass NULL to iconv_open(), it may crash! + if ( ms_wcCharsetName ) { - if ( m2w != (iconv_t)-1 ) - iconv_close(m2w); - if ( w2m != (iconv_t)-1 ) - iconv_close(w2m); + w2m = iconv_open( cname, ms_wcCharsetName); } + else + { + w2m = (iconv_t)-1; + } +} - size_t MB2WC(wchar_t *buf, const char *psz, size_t n) +IC_CharSet::~IC_CharSet() +{ + if ( m2w != (iconv_t)-1 ) + iconv_close(m2w); + if ( w2m != (iconv_t)-1 ) + iconv_close(w2m); +} + +size_t IC_CharSet::MB2WC(wchar_t *buf, const char *psz, size_t n) +{ + 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: + wchar_t *bufPtr = buf; + const char *pszPtr = psz; + + if (buf) { - 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: - wchar_t *bufPtr = buf; - const char *pszPtr = psz; + // have destination buffer, convert there + cres = iconv(m2w, + ICONV_CHAR_CAST(&pszPtr), &inbuf, + (char**)&bufPtr, &outbuf); + res = n - (outbuf / SIZEOF_WCHAR_T); - if (buf) + if (ms_wcNeedsSwap) { - // have destination buffer, convert there -#ifdef WX_ICONV_TAKES_CHAR - cres = iconv(m2w, (char**)&pszPtr, &inbuf, (char**)&bufPtr, &outbuf); -#else - cres = iconv(m2w, &pszPtr, &inbuf, (char**)&bufPtr, &outbuf); -#endif - res = n - (outbuf / SIZEOF_WCHAR_T); // convert to native endianness -#ifdef WC_NEED_BSWAP WC_BSWAP(buf /* _not_ bufPtr */, res) -#endif - } - else - { - // no destination buffer... convert using temp buffer - // to calculate destination buffer requirement - wchar_t tbuf[8]; - res = 0; - do { - bufPtr = tbuf; outbuf = 8*SIZEOF_WCHAR_T; -#ifdef WX_ICONV_TAKES_CHAR - cres = iconv( m2w, (char**)&pszPtr, &inbuf, (char**)&bufPtr, &outbuf ); -#else - cres = iconv( m2w, &pszPtr, &inbuf, (char**)&bufPtr, &outbuf ); -#endif - res += 8-(outbuf/SIZEOF_WCHAR_T); - } while ((cres==(size_t)-1) && (errno==E2BIG)); } - if (ICONV_FAILED(cres, inbuf)) - return (size_t)-1; - - return res; + // 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. + if (res < n) + buf[res] = 0; + } + else + { + // no destination buffer... convert using temp buffer + // to calculate destination buffer requirement + wchar_t tbuf[8]; + res = 0; + do { + bufPtr = tbuf; + 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)); } - size_t WC2MB(char *buf, const wchar_t *psz, size_t n) + if (ICONV_FAILED(cres, inbuf)) { -#if defined(__BORLANDC__) && (__BORLANDC__ > 0x530) - size_t inbuf = std::wcslen(psz) * SIZEOF_WCHAR_T; -#else - size_t inbuf = ::wcslen(psz) * SIZEOF_WCHAR_T; -#endif - size_t outbuf = n; - size_t res, cres; + //VS: it is ok if iconv fails, hence trace only + wxLogTrace(wxT("strconv"), wxT("iconv failed: %s"), wxSysErrorMsg(wxSysErrorCode())); + return (size_t)-1; + } + + return res; +} + +size_t IC_CharSet::WC2MB(char *buf, const wchar_t *psz, size_t n) +{ + size_t inbuf = wxWcslen(psz) * SIZEOF_WCHAR_T; + size_t outbuf = n; + size_t res, cres; -#ifdef WC_NEED_BSWAP + wchar_t *tmpbuf = 0; + + 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 // could be in read-only memory, or be accessed in some other thread) - wchar_t *tmpbuf=(wchar_t*)malloc((inbuf+1)*SIZEOF_WCHAR_T); + tmpbuf=(wchar_t*)malloc((inbuf+1)*SIZEOF_WCHAR_T); memcpy(tmpbuf,psz,(inbuf+1)*SIZEOF_WCHAR_T); WC_BSWAP(tmpbuf, inbuf) psz=tmpbuf; -#endif - if (buf) - { - // have destination buffer, convert there -#ifdef WX_ICONV_TAKES_CHAR - cres = iconv( w2m, (char**)&psz, &inbuf, &buf, &outbuf ); -#else - cres = iconv( w2m, (const char**)&psz, &inbuf, &buf, &outbuf ); -#endif - res = n-outbuf; - } - else - { - // no destination buffer... convert using temp buffer - // to calculate destination buffer requirement - char tbuf[16]; - res = 0; - do { - buf = tbuf; outbuf = 16; -#ifdef WX_ICONV_TAKES_CHAR - cres = iconv( w2m, (char**)&psz, &inbuf, &buf, &outbuf ); -#else - cres = iconv( w2m, (const char**)&psz, &inbuf, &buf, &outbuf ); -#endif - res += 16 - outbuf; - } while ((cres==(size_t)-1) && (errno==E2BIG)); - } -#ifdef WC_NEED_BSWAP + } + + if (buf) + { + // have destination buffer, convert there + cres = iconv( w2m, ICONV_CHAR_CAST(&psz), &inbuf, &buf, &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 + // if there's some room left for it in the output buffer. + if (res < n) + buf[0] = 0; + } + else + { + // no destination buffer... convert using temp buffer + // to calculate destination buffer requirement + char tbuf[16]; + res = 0; + 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)); + } + + if (ms_wcNeedsSwap) + { free(tmpbuf); -#endif - if (ICONV_FAILED(cres, inbuf)) - return (size_t)-1; + } - return res; + 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; } - bool usable() - { return (m2w != (iconv_t)-1) && (w2m != (iconv_t)-1); } + return res; +} -public: - iconv_t m2w, w2m; -}; -#endif +#endif // HAVE_ICONV + +// ============================================================================ +// Win32 conversion classes +// ============================================================================ + +#if defined(__WIN32__) && !defined(__WXMICROWIN__) && !defined(__WXUNIVERSAL__) + +extern long wxCharsetToCodepage(const wxChar *charset); // from utils.cpp -#ifdef __WIN32__ class CP_CharSet : public wxCharacterSet { public: - CP_CharSet(const wxChar*name) - : wxCharacterSet(name), CodePage(CharsetToCodepage(name)) {} + CP_CharSet(const wxChar* name) + : wxCharacterSet(name) + { + m_CodePage = wxCharsetToCodepage(name); + } size_t MB2WC(wchar_t *buf, const char *psz, size_t n) { - size_t len = - MultiByteToWideChar(CodePage, 0, psz, -1, buf, buf ? n : 0); - return len ? len : (size_t)-1; + const size_t len = ::MultiByteToWideChar + ( + m_CodePage, // code page + 0, // flags (none) + psz, // input string + -1, // its length (NUL-terminated) + buf, // output string + 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; } size_t WC2MB(char *buf, const wchar_t *psz, size_t n) { - size_t len = WideCharToMultiByte(CodePage, 0, psz, -1, buf, - buf ? n : 0, NULL, NULL); - return len ? len : (size_t)-1; + const size_t len = ::WideCharToMultiByte + ( + m_CodePage, // code page + 0, // flags (none) + psz, // 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? + ); + + // see the comment above! + return len ? (buf ? len : len - 1) : (size_t)-1; } - bool usable() - { return CodePage != -1; } + bool usable() const + { return m_CodePage != -1; } public: - long CodePage; + long m_CodePage; }; -#endif +#endif // defined(__WIN32__) && !defined(__WXMICROWIN__) && !defined(__WXUNIVERSAL__) + +// ============================================================================ +// wxEncodingConverter based conversion classes +// ============================================================================ + +#if wxUSE_FONTMAP class EC_CharSet : public wxCharacterSet { public: // temporarily just use wxEncodingConverter stuff, // so that it works while a better implementation is built - EC_CharSet(const wxChar*name) : wxCharacterSet(name), - enc(wxFONTENCODING_SYSTEM) + EC_CharSet(const wxChar* name) : wxCharacterSet(name), + enc(wxFONTENCODING_SYSTEM) { if (name) - enc = wxTheFontMapper->CharsetToEncoding(name, FALSE); - m2w.Init(enc, wxFONTENCODING_UNICODE); - w2m.Init(wxFONTENCODING_UNICODE, enc); + enc = wxFontMapper::Get()->CharsetToEncoding(name, FALSE); + + m_ok = m2w.Init(enc, wxFONTENCODING_UNICODE) && + w2m.Init(wxFONTENCODING_UNICODE, enc); } - size_t MB2WC(wchar_t *buf, const char *psz, size_t n) + size_t MB2WC(wchar_t *buf, const char *psz, size_t WXUNUSED(n)) { size_t inbuf = strlen(psz); if (buf) @@ -667,68 +868,102 @@ public: return inbuf; } - size_t WC2MB(char *buf, const wchar_t *psz, size_t n) + size_t WC2MB(char *buf, const wchar_t *psz, size_t WXUNUSED(n)) { -#if defined(__BORLANDC__) && (__BORLANDC__ > 0x530) - size_t inbuf = std::wcslen(psz); -#else - size_t inbuf = ::wcslen(psz); -#endif + const size_t inbuf = wxWcslen(psz); if (buf) w2m.Convert(psz,buf); return inbuf; } - bool usable() - { return (enc!=wxFONTENCODING_SYSTEM) && (enc!=wxFONTENCODING_DEFAULT); } + bool usable() const { return m_ok; } public: wxFontEncoding enc; wxEncodingConverter m2w, w2m; + + // were we initialized successfully? + bool m_ok; }; +#endif // wxUSE_FONTMAP + +// ---------------------------------------------------------------------------- +// the function creating the wxCharacterSet for the specified charset on the +// current system, trying all possibilities +// ---------------------------------------------------------------------------- + static wxCharacterSet *wxGetCharacterSet(const wxChar *name) { - wxCharacterSet *cset = NULL; - if (name) + // check for the special case of ASCII charset +#if wxUSE_FONTMAP + if ( wxFontMapper::Get()->CharsetToEncoding(name) == wxFONTENCODING_DEFAULT ) +#else // wxUSE_FONTMAP + if ( !name ) +#endif // wxUSE_FONTMAP/!wxUSE_FONTMAP { - if (wxStricmp(name, wxT("UTF8")) == 0 || wxStricmp(name, wxT("UTF-8")) == 0) - { - cset = new ID_CharSet(name, &wxConvUTF8); - } - else - { -#ifdef HAVE_ICONV_H - cset = new IC_CharSet(name); // may not take NULL -#endif - } + // don't convert at all + return NULL; } - if (cset && cset->usable()) return cset; - if (cset) + // the test above must have taken care of this case + wxCHECK_MSG( name, NULL, _T("NULL name must be wxFONTENCODING_DEFAULT") ); + + wxCharacterSet *cset; + + if ( wxStricmp(name, wxT("UTF8")) == 0 || wxStricmp(name, wxT("UTF-8")) == 0) { + cset = new ID_CharSet(name, &wxConvUTF8); + } + else + { +#ifdef HAVE_ICONV + cset = new IC_CharSet(name); +#else // !HAVE_ICONV + cset = NULL; +#endif // HAVE_ICONV/!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; } -#ifdef __WIN32__ - cset = new CP_CharSet(name); // may take NULL - if (cset->usable()) +#if defined(__WIN32__) && !defined(__WXMICROWIN__) && !defined(__WXUNIVERSAL__) + cset = new CP_CharSet(name); + if ( cset->usable() ) return cset; delete cset; -#endif // __WIN32__ + cset = NULL; +#endif // defined(__WIN32__) && !defined(__WXMICROWIN__) && !defined(__WXUNIVERSAL__) +#if wxUSE_FONTMAP cset = new EC_CharSet(name); - if (cset->usable()) + if ( cset->usable() ) return cset; delete cset; - wxLogError(_("Unknown encoding '%s'!"), name); + cset = NULL; +#endif // wxUSE_FONTMAP + + wxLogError(_("Cannot convert from encoding '%s'!"), name); + return NULL; } +// ============================================================================ +// wxCSConv implementation +// ============================================================================ + wxCSConv::wxCSConv(const wxChar *charset) { m_name = (wxChar *)NULL; @@ -740,8 +975,31 @@ wxCSConv::wxCSConv(const wxChar *charset) wxCSConv::~wxCSConv() { - free(m_name); - delete m_cset; + Clear(); +} + +wxCSConv::wxCSConv(const wxCSConv& conv) + : wxMBConv() +{ + Clear(); + SetName(conv.m_name); +} + +wxCSConv& wxCSConv::operator=(const wxCSConv& conv) +{ + Clear(); + SetName(conv.m_name); + return *this; +} + +void wxCSConv::Clear() +{ + if (m_name) + free(m_name); + if (m_cset) + delete m_cset; + m_name = NULL; + m_cset = NULL; } void wxCSConv::SetName(const wxChar *charset) @@ -755,16 +1013,23 @@ void wxCSConv::SetName(const wxChar *charset) void wxCSConv::LoadNow() { - if (m_deferred) + if ( m_deferred ) { + // it would probably be better to make GetSystemEncodingName() always + // available (i.e. even when wxUSE_INTL == 0)? +#if wxUSE_INTL if ( !m_name ) { wxString name = wxLocale::GetSystemEncodingName(); if ( !name.empty() ) + { SetName(name); + } } +#endif // wxUSE_INTL - m_cset = wxGetCharacterSet(m_name); + // wxGetCharacterSet() complains about NULL name + m_cset = m_name ? wxGetCharacterSet(m_name) : NULL; m_deferred = FALSE; } } @@ -796,11 +1061,7 @@ size_t wxCSConv::WC2MB(char *buf, const wchar_t *psz, size_t n) const return m_cset->WC2MB(buf, psz, n); // latin-1 (direct) -#if defined(__BORLANDC__) && (__BORLANDC__ > 0x530) - size_t len=std::wcslen(psz); -#else - size_t len=::wcslen(psz); -#endif + const size_t len = wxWcslen(psz); if (buf) { for (size_t c = 0; c <= len; c++) @@ -810,68 +1071,6 @@ size_t wxCSConv::WC2MB(char *buf, const wchar_t *psz, size_t n) const return len; } -#ifdef HAVE_ICONV_H - -class IC_CharSetConverter -{ -public: - IC_CharSetConverter(IC_CharSet *from, IC_CharSet *to) - { - cnv = iconv_open(wxConvLibc.cWX2MB(to->cname), - wxConvLibc.cWX2MB(from->cname)); - } - - ~IC_CharSetConverter() - { - if (cnv != (iconv_t)-1) - iconv_close(cnv); - } - - size_t Convert(char *buf, const char *psz, size_t n) - { - size_t inbuf = strlen(psz); - size_t outbuf = n; -#ifdef WX_ICONV_TAKES_CHAR - size_t res = iconv( cnv, (char**)&psz, &inbuf, &buf, &outbuf ); -#else - size_t res = iconv( cnv, &psz, &inbuf, &buf, &outbuf ); -#endif - if (res == (size_t)-1) - return (size_t)-1; - return (n - outbuf); - } - -public: - iconv_t cnv; -}; - -#endif // HAVE_ICONV_H - -class EC_CharSetConverter -{ -public: - EC_CharSetConverter(EC_CharSet*from,EC_CharSet*to) - { cnv.Init(from->enc,to->enc); } - - size_t Convert(char*buf, const char*psz, size_t n) - { - size_t inbuf = strlen(psz); - if (buf) cnv.Convert(psz,buf); - return inbuf; - } - -public: - wxEncodingConverter cnv; -}; - -#else // !wxUSE_WCHAR_T - -// ---------------------------------------------------------------------------- -// stand-ins in absence of wchar_t -// ---------------------------------------------------------------------------- - -WXDLLEXPORT_DATA(wxMBConv) wxConvLibc, wxConvFile; - #endif // wxUSE_WCHAR_T