/////////////////////////////////////////////////////////////////////////////
// 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
/////////////////////////////////////////////////////////////////////////////
#include <string.h>
#include <stdlib.h>
+
+#include "wx/debug.h"
+#include "wx/strconv.h"
+#include "wx/intl.h"
+#include "wx/log.h"
+
+// ----------------------------------------------------------------------------
+// globals
+// ----------------------------------------------------------------------------
+
+WXDLLEXPORT_DATA(wxMBConv *) wxConvCurrent = &wxConvLibc;
+
+
+// ============================================================================
+// implementation
+// ============================================================================
+
+#if wxUSE_WCHAR_T
+
#ifdef __SALFORDC__
#include <clib.h>
#endif
#include <windows.h>
#endif
-#include "wx/debug.h"
-#include "wx/strconv.h"
-#include "wx/intl.h"
-#include "wx/log.h"
-
-#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<len; _c++) str[_c]=wxUINT32_SWAP_ALWAYS(str[_c]); }
-#define BSWAP_UCS2(str, len) { unsigned _c; for (_c=0; _c<len; _c++) str[_c]=wxUINT16_SWAP_ALWAYS(str[_c]); }
-#define WC_NEED_BSWAP
-#endif
-#define BSWAP_UTF32(str, len) BSWAP_UCS4(str, len)
-#define BSWAP_UTF16(str, len) BSWAP_UCS2(str, len)
+#define BSWAP_UTF16(str, len) { unsigned _c; for (_c=0; _c<len; _c++) str[_c]=wxUINT16_SWAP_ALWAYS(str[_c]); }
+
+// under Unix SIZEOF_WCHAR_T is defined by configure, but under other platforms
+// it might be not defined - assume the most common value
+#ifndef SIZEOF_WCHAR_T
+ #define SIZEOF_WCHAR_T 2
+#endif // !defined(SIZEOF_WCHAR_T)
#if SIZEOF_WCHAR_T == 4
-#define WC_NAME "UCS4"
-#define WC_BSWAP BSWAP_UCS4
+ #define WC_NAME "UCS4"
+ #define WC_BSWAP BSWAP_UCS4
+ #ifdef WORDS_BIGENDIAN
+ #define WC_NAME_BEST "UCS-4BE"
+ #else
+ #define WC_NAME_BEST "UCS-4LE"
+ #endif
#elif SIZEOF_WCHAR_T == 2
-#define WC_NAME "UTF16"
-#define WC_BSWAP BSWAP_UTF16
-#define WC_UTF16
+ #define WC_NAME "UTF16"
+ #define WC_BSWAP BSWAP_UTF16
+ #define WC_UTF16
+ #ifdef WORDS_BIGENDIAN
+ #define WC_NAME_BEST "UTF-16BE"
+ #else
+ #define WC_NAME_BEST "UTF-16LE"
+ #endif
+#else // sizeof(wchar_t) != 2 nor 4
+ // I don't know what to do about this
+ #error "Weird sizeof(wchar_t): please report your platform details to wx-users mailing list"
#endif
-// ----------------------------------------------------------------------------
-// globals
-// ----------------------------------------------------------------------------
-
-WXDLLEXPORT_DATA(wxMBConv *) wxConvCurrent = &wxConvLibc;
-
-// ============================================================================
-// implementation
-// ============================================================================
-
-#if wxUSE_WCHAR_T
#ifdef WC_UTF16
-static size_t encode_utf16(wxUint32 input,wxUint16*output)
+static size_t encode_utf16(wxUint32 input, wchar_t *output)
{
if (input<=0xffff)
{
}
}
-static size_t decode_utf16(wxUint16*input,wxUint32&output)
+static size_t decode_utf16(const wchar_t* input, wxUint32& output)
{
if ((*input<0xd800) || (*input>0xdfff))
{
{
wxUint32 cc;
#ifdef WC_UTF16
- size_t pa = decode_utf16(psz,cc);
+ size_t pa = decode_utf16(psz, cc);
psz += (pa == (size_t)-1) ? 1 : pa;
#else
cc=(*psz++) & 0x7fffffff;
// - perhaps common encodings to objects ("UTF8" -> wxConvUTF8)
// - move wxEncodingConverter meat in here
-#ifdef __WIN32__
+#if defined(__WIN32__) && !defined(__WXMICROWIN__)
#include "wx/msw/registry.h"
// this should work if M$ Internet Exploiter is installed
static long CharsetToCodepage(const wxChar *name)
path += cn;
wxRegKey key(wxRegKey::HKCR, path);
- if (!key.Exists()) continue;
+ if (!key.Exists()) break;
// two cases: either there's an AliasForCharset string,
// or there are Codepage and InternetEncoding dwords.
#ifdef HAVE_ICONV_H
+bool g_wcNeedsSwap = FALSE;
+static const char *g_wcCharset = NULL;
+
// 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
// yet another bug in glibc) the only case when iconv() returns with (size_t)-1
IC_CharSet(const wxChar *name)
: wxCharacterSet(name)
{
- m2w = iconv_open(WC_NAME, wxConvLibc.cWX2MB(cname));
- w2m = iconv_open(wxConvLibc.cWX2MB(cname), WC_NAME);
- }
+ // check for charset that represents wchar_t:
+ if (g_wcCharset == NULL)
+ {
+ g_wcNeedsSwap = FALSE;
- ~IC_CharSet()
+ // try charset with explicit bytesex info (e.g. "UCS-4LE"):
+ g_wcCharset = WC_NAME_BEST;
+ m2w = iconv_open(g_wcCharset, wxConvLibc.cWX2MB(name));
+
+ if (m2w == (iconv_t)-1)
+ {
+ // try charset w/o bytesex info (e.g. "UCS4")
+ // and check for bytesex ourselves:
+ g_wcCharset = WC_NAME;
+ m2w = iconv_open(g_wcCharset, wxConvLibc.cWX2MB(name));
+
+ // last bet, try if it knows WCHAR_T pseudo-charset
+ if (m2w == (iconv_t)-1)
+ {
+ g_wcCharset = "WCHAR_T";
+ m2w = iconv_open(g_wcCharset, wxConvLibc.cWX2MB(name));
+ }
+
+ 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;
+
+ #ifdef WX_ICONV_TAKES_CHAR
+ res = iconv(m2w, (char**)&bufPtr, &insz, (char**)&wbufPtr, &outsz);
+ #else
+ res = iconv(m2w, (const char**)&bufPtr, &insz, (char**)&wbufPtr, &outsz);
+ #endif
+ if (ICONV_FAILED(res, insz))
+ {
+ g_wcCharset = NULL;
+ wxLogLastError(wxT("iconv"));
+ wxLogError(_("Convertion to charset '%s' doesn't work."), name);
+ }
+ else
+ {
+ g_wcNeedsSwap = (wbuf[0] != (wchar_t)buf[0]);
+ }
+ }
+ else
+ {
+ g_wcCharset = NULL;
+ wxLogError(_("Don't know how to convert to/from charset '%s'."), name);
+ }
+ }
+ wxLogTrace(wxT("strconv"), wxT("wchar_t charset is '%s', needs swap: %i"), g_wcCharset, g_wcNeedsSwap);
+ }
+ else
+ m2w = iconv_open(g_wcCharset, wxConvLibc.cWX2MB(name));
+
+ w2m = iconv_open(wxConvLibc.cWX2MB(name), g_wcCharset);
+ }
+
+ ~IC_CharSet()
{
if ( m2w != (iconv_t)-1 )
iconv_close(m2w);
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
+
+ if (g_wcNeedsSwap)
+ {
+ // convert to native endianness
+ WC_BSWAP(buf /* _not_ bufPtr */, res)
+ }
}
else
{
}
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;
+ }
return res;
}
#endif
size_t outbuf = n;
size_t res, cres;
+
+ wchar_t *tmpbuf;
+
+ if (g_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)
+ tmpbuf=(wchar_t*)malloc((inbuf+1)*SIZEOF_WCHAR_T);
+ memcpy(tmpbuf,psz,(inbuf+1)*SIZEOF_WCHAR_T);
+ WC_BSWAP(tmpbuf, inbuf)
+ psz=tmpbuf;
+ }
-#ifdef WC_NEED_BSWAP
- // 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);
- memcpy(tmpbuf,psz,(inbuf+1)*SIZEOF_WCHAR_T);
- WC_BSWAP(tmpbuf, inbuf)
- psz=tmpbuf;
-#endif
if (buf)
{
// have destination buffer, convert there
res += 16 - outbuf;
} while ((cres==(size_t)-1) && (errno==E2BIG));
}
-#ifdef WC_NEED_BSWAP
- free(tmpbuf);
-#endif
+
+ if (g_wcNeedsSwap)
+ {
+ free(tmpbuf);
+ }
+
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;
+ }
return res;
}
bool usable()
{ return (m2w != (iconv_t)-1) && (w2m != (iconv_t)-1); }
-public:
+protected:
iconv_t m2w, w2m;
};
#endif
-#ifdef __WIN32__
+#if defined(__WIN32__) && !defined(__WXMICROWIN__)
class CP_CharSet : public wxCharacterSet
{
public:
{
size_t len =
MultiByteToWideChar(CodePage, 0, psz, -1, buf, buf ? n : 0);
- return len ? len : (size_t)-1;
+ //VS: returns # of written chars for buf!=NULL and *size*
+ // 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;
+ //VS: returns # of written chars for buf!=NULL and *size*
+ // needed buffer for buf==NULL
+ return len ? (buf ? len : len-1) : (size_t)-1;
}
bool usable()
public:
long CodePage;
};
-#endif
+#endif // __WIN32__
+
+#if wxUSE_FONTMAP
class EC_CharSet : public wxCharacterSet
{
wxEncodingConverter m2w, w2m;
};
+#endif // wxUSE_FONTMAP
+
static wxCharacterSet *wxGetCharacterSet(const wxChar *name)
{
wxCharacterSet *cset = NULL;
}
}
- if (cset && cset->usable()) return cset;
+ if (cset && cset->usable())
+ return cset;
+
if (cset)
{
delete cset;
cset = NULL;
}
-#ifdef __WIN32__
+#if defined(__WIN32__) && !defined(__WXMICROWIN__)
cset = new CP_CharSet(name); // may take NULL
if (cset->usable())
return cset;
delete cset;
#endif // __WIN32__
+#if wxUSE_FONTMAP
cset = new EC_CharSet(name);
if (cset->usable())
return cset;
+#endif // wxUSE_FONTMAP
delete cset;
wxLogError(_("Unknown encoding '%s'!"), name);
SetName(name);
}
- m_cset = wxGetCharacterSet(m_name);
+ // wxGetCharacterSet() complains about NULL name
+ m_cset = m_name ? wxGetCharacterSet(m_name) : NULL;
m_deferred = FALSE;
}
}
class EC_CharSetConverter
{
public:
- EC_CharSetConverter(EC_CharSet*from,EC_CharSet*to)
+ 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 Convert(char* buf, const char* psz, size_t n)
{
size_t inbuf = strlen(psz);
if (buf) cnv.Convert(psz,buf);
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