/////////////////////////////////////////////////////////////////////////////
-// Name: strconv.cpp
+// Name: src/common/strconv.cpp
// Purpose: Unicode conversion classes
-// Author: Ove Kaaven, Robert Roebling, Vadim Zeitlin, Vaclav Slavik
+// Author: Ove Kaaven, Robert Roebling, Vadim Zeitlin, Vaclav Slavik,
+// Ryan Norton, Fredrik Roubert (UTF7)
// 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
+// (c) 2004 Ryan Norton, Fredrik Roubert
// 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
+ #pragma hdrstop
+#endif //__BORLANDC__
#ifndef WX_PRECOMP
#include "wx/intl.h"
#include "wx/log.h"
-#endif // WX_PRECOMP
-
-#ifdef __WXMSW__
- #include "wx/msw/private.h"
+ #include "wx/utils.h"
+ #include "wx/hashmap.h"
#endif
+#include "wx/strconv.h"
+
+#if wxUSE_WCHAR_T
+
#ifndef __WXWINCE__
#include <errno.h>
#endif
#include <string.h>
#include <stdlib.h>
-#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)
-
-
-// ----------------------------------------------------------------------------
-// headers
-// ----------------------------------------------------------------------------
-
-#if wxUSE_WCHAR_T
-
-#ifdef __SALFORDC__
- #include <clib.h>
+#if defined(__WIN32__) && !defined(__WXMICROWIN__)
+ #include "wx/msw/private.h"
+ #include "wx/msw/missing.h"
+ #define wxHAVE_WIN32_MB2WC
#endif
#ifdef HAVE_ICONV
#include <iconv.h>
+ #include "wx/thread.h"
#endif
#include "wx/encconv.h"
#include "wx/fontmap.h"
-// ----------------------------------------------------------------------------
-// macros
-// ----------------------------------------------------------------------------
+#ifdef __DARWIN__
+#include "wx/osx/core/private/strconv_cf.h"
+#endif //def __DARWIN__
-#define BSWAP_UCS4(str, len) { unsigned _c; for (_c=0; _c<len; _c++) str[_c]=wxUINT32_SWAP_ALWAYS(str[_c]); }
-#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)
+#define TRACE_STRCONV _T("strconv")
-#if SIZEOF_WCHAR_T == 4
- #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
+// WC_UTF16 is defined only if sizeof(wchar_t) == 2, otherwise it's supposed to
+// be 4 bytes
+#if SIZEOF_WCHAR_T == 2
#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
+
// ============================================================================
// implementation
// ============================================================================
+// helper function of cMB2WC(): check if n bytes at this location are all NUL
+static bool NotAllNULs(const char *p, size_t n)
+{
+ while ( n && *p++ == '\0' )
+ n--;
+
+ return n != 0;
+}
+
// ----------------------------------------------------------------------------
-// UTF-16 en/decoding to/from UCS-4
+// UTF-16 en/decoding to/from UCS-4 with surrogates handling
// ----------------------------------------------------------------------------
-
static size_t encode_utf16(wxUint32 input, wxUint16 *output)
{
- if (input<=0xffff)
+ if (input <= 0xffff)
{
- if (output) *output++ = (wxUint16) input;
+ if (output)
+ *output = (wxUint16) input;
+
return 1;
}
- else if (input>=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
{
}
}
+#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(reinterpret_cast<const wxUint16 *>(*pSrc), out);
+ if ( n == wxCONV_FAILED )
+ *pSrc = NULL;
+ else
+ *pSrc += n;
+
+ return out;
+}
// ----------------------------------------------------------------------------
// wxMBConv
// ----------------------------------------------------------------------------
-#define IGNORE_LIBC 0
-
-wxMBConv::~wxMBConv()
+size_t
+wxMBConv::ToWChar(wchar_t *dst, size_t dstLen,
+ const char *src, size_t srcLen) const
{
- // nothing to do here
+ // although new conversion classes are supposed to implement this function
+ // directly, the existing 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
+ //
+ // moreover, some conversion classes simply can't implement ToWChar()
+ // directly, the primary example is wxConvLibc: mbstowcs() only handles
+ // NUL-terminated strings
+
+ // 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;
+ }
+
+ srcEnd = src + srcLen;
+ }
+ else // quit after the first loop iteration
+ {
+ srcEnd = NULL;
+ }
+
+ // the idea of this code is straightforward: it converts a NUL-terminated
+ // chunk of the string during each iteration and updates the output buffer
+ // with the result
+ //
+ // all the complication come from the fact that this function, for
+ // historical reasons, must behave in 2 subtly different ways when it's
+ // called with a fixed number of characters and when it's called for the
+ // entire NUL-terminated string: in the former case (srcEnd == NULL) we
+ // must count all characters we convert, NUL or not; but in the latter we
+ // do not count the trailing NUL -- but still count all the NULs inside the
+ // string
+ //
+ // so for the (simple) former case we just always count the trailing NUL,
+ // but for the latter we need to wait until we see if there is going to be
+ // another loop iteration and only count it then
+ for ( ;; )
+ {
+ // try to convert the current chunk
+ size_t lenChunk = MB2WC(NULL, src, 0);
+ if ( lenChunk == wxCONV_FAILED )
+ return wxCONV_FAILED;
+
+ dstWritten += lenChunk;
+ if ( !srcEnd )
+ dstWritten++;
+
+ if ( !lenChunk )
+ {
+ // nothing left in the input string, conversion succeeded
+ break;
+ }
+
+ if ( dst )
+ {
+ if ( dstWritten > dstLen )
+ return wxCONV_FAILED;
+
+ // +1 is for trailing NUL
+ if ( MB2WC(dst, src, lenChunk + 1) == wxCONV_FAILED )
+ return wxCONV_FAILED;
+
+ dst += lenChunk;
+ if ( !srcEnd )
+ dst++;
+ }
+
+ if ( !srcEnd )
+ {
+ // we convert just one chunk in this case as this is the entire
+ // string anyhow
+ break;
+ }
+
+ // 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;
+ }
+
+ src += nulLen; // skipping over its terminator as well
+
+ // 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 srcEnd
+ if ( src >= srcEnd )
+ break;
+
+ // if we got here then this wasn't the last chunk in this string and
+ // hence we must count an extra char for L'\0' even when converting a
+ // fixed number of characters
+ if ( srcEnd )
+ {
+ dstWritten++;
+ if ( dst )
+ dst++;
+ }
+ }
+
+ return dstWritten;
}
-size_t wxMBConv::MB2WC(wchar_t *buf, const char *psz, size_t n) const
+size_t
+wxMBConv::FromWChar(char *dst, size_t dstLen,
+ const wchar_t *src, size_t srcLen) const
{
-#if IGNORE_LIBC
- if (buf)
+ // the number of chars [which would be] written to dst [if it were not NULL]
+ size_t dstWritten = 0;
+
+ // if we don't know its length we have no choice but to assume that it is
+ // NUL-terminated (notice that it can still be NUL-terminated even if
+ // explicit length is given but it doesn't change our return value)
+ const bool isNulTerminated = srcLen == wxNO_LEN;
+
+ // make a copy of the input string unless it is already properly
+ // NUL-terminated
+ wxWCharBuffer bufTmp;
+ if ( isNulTerminated )
{
- for (size_t i = 0; i < strlen( psz )+1; i++)
- buf[i] = (wchar_t) psz[i];
- return strlen( psz );
+ srcLen = wxWcslen(src) + 1;
}
- else
+ else if ( srcLen != 0 && src[srcLen - 1] != L'\0' )
{
- return strlen( psz );
+ // make a copy in order to properly NUL-terminate the string
+ bufTmp = wxWCharBuffer(srcLen);
+ memcpy(bufTmp.data(), src, srcLen * sizeof(wchar_t));
+ src = bufTmp;
}
-#else
- return wxMB2WC(buf, psz, n);
-#endif
+
+ const size_t lenNul = GetMBNulLen();
+ for ( const wchar_t * const srcEnd = src + srcLen;
+ src < srcEnd;
+ src += wxWcslen(src) + 1 /* skip L'\0' too */ )
+ {
+ // try to convert the current chunk
+ size_t lenChunk = WC2MB(NULL, src, 0);
+
+ if ( lenChunk == wxCONV_FAILED )
+ return wxCONV_FAILED;
+
+ dstWritten += lenChunk;
+ if ( isNulTerminated )
+ dstWritten += lenNul;
+
+ if ( dst )
+ {
+ if ( dstWritten > dstLen )
+ return wxCONV_FAILED;
+
+ if ( WC2MB(dst, src, lenChunk + lenNul) == wxCONV_FAILED )
+ return wxCONV_FAILED;
+
+ dst += lenChunk;
+ if ( isNulTerminated )
+ dst += lenNul;
+ }
+ }
+
+ return dstWritten;
}
-size_t wxMBConv::WC2MB(char *buf, const wchar_t *psz, size_t n) const
+size_t wxMBConv::MB2WC(wchar_t *outBuff, const char *inBuff, size_t outLen) const
{
-#if IGNORE_LIBC
- if (buf)
+ size_t rc = ToWChar(outBuff, outLen, inBuff);
+ if ( rc != wxCONV_FAILED )
{
- for (size_t i = 0; i < wxStrlen( psz )+1; i++)
- buf[i] = (char) psz[i];
- return wxStrlen( psz );
+ // ToWChar() returns the buffer length, i.e. including the trailing
+ // NUL, while this method doesn't take it into account
+ rc--;
}
- else
+
+ return rc;
+}
+
+size_t wxMBConv::WC2MB(char *outBuff, const wchar_t *inBuff, size_t outLen) const
+{
+ size_t rc = FromWChar(outBuff, outLen, inBuff);
+ if ( rc != wxCONV_FAILED )
{
- return wxStrlen( psz );
+ rc -= GetMBNulLen();
}
-#else
- return wxWC2MB(buf, psz, n);
-#endif
+
+ return rc;
+}
+
+wxMBConv::~wxMBConv()
+{
+ // nothing to do here (necessary for Darwin linking probably)
}
const wxWCharBuffer wxMBConv::cMB2WC(const char *psz) const
if ( psz )
{
// calculate the length of the buffer needed first
- size_t nLen = MB2WC(NULL, psz, 0);
- if ( nLen != (size_t)-1 )
+ const size_t nLen = ToWChar(NULL, 0, psz);
+ if ( nLen != wxCONV_FAILED )
{
// now do the actual conversion
- wxWCharBuffer buf(nLen);
- MB2WC(buf.data(), psz, nLen + 1); // with the trailing NUL
+ wxWCharBuffer buf(nLen - 1 /* +1 added implicitly */);
- return buf;
+ // +1 for the trailing NULL
+ if ( ToWChar(buf.data(), nLen, psz) != wxCONV_FAILED )
+ return buf;
}
}
- wxWCharBuffer buf((wchar_t *)NULL);
-
- return buf;
+ return wxWCharBuffer();
}
const wxCharBuffer wxMBConv::cWC2MB(const wchar_t *pwz) const
{
if ( pwz )
{
- size_t nLen = WC2MB(NULL, pwz, 0);
- if ( nLen != (size_t)-1 )
+ const size_t nLen = FromWChar(NULL, 0, pwz);
+ if ( nLen != wxCONV_FAILED )
{
- wxCharBuffer buf(nLen+3); // space for a wxUint32 trailing zero
- WC2MB(buf.data(), pwz, nLen + 4);
-
- return buf;
+ wxCharBuffer buf(nLen - 1);
+ if ( FromWChar(buf.data(), nLen, pwz) != wxCONV_FAILED )
+ return buf;
}
}
- wxCharBuffer buf((char *)NULL);
-
- return buf;
-}
-
-// ----------------------------------------------------------------------------
-// UTF-7
-// ----------------------------------------------------------------------------
-
-WXDLLIMPEXP_DATA_BASE(wxMBConvUTF7) wxConvUTF7;
-
-#if 0
-static char utf7_setD[]="ABCDEFGHIJKLMNOPQRSTUVWXYZ"
- "abcdefghijklmnopqrstuvwxyz"
- "0123456789'(),-./:?";
-static char utf7_setO[]="!\"#$%&*;<=>@[]^_`{|}";
-static char utf7_setB[]="ABCDEFGHIJKLMNOPQRSTUVWXYZ"
- "abcdefghijklmnopqrstuvwxyz"
- "0123456789+/";
-#endif
-
-// TODO: write actual implementations of UTF-7 here
-size_t wxMBConvUTF7::MB2WC(wchar_t * WXUNUSED(buf),
- const char * WXUNUSED(psz),
- size_t WXUNUSED(n)) const
-{
- return 0;
-}
-
-size_t wxMBConvUTF7::WC2MB(char * WXUNUSED(buf),
- const wchar_t * WXUNUSED(psz),
- size_t WXUNUSED(n)) const
-{
- return 0;
+ return wxCharBuffer();
}
-// ----------------------------------------------------------------------------
-// UTF-8
-// ----------------------------------------------------------------------------
-
-WXDLLIMPEXP_DATA_BASE(wxMBConvUTF8) wxConvUTF8;
-
-static wxUint32 utf8_max[]=
- { 0x7f, 0x7ff, 0xffff, 0x1fffff, 0x3ffffff, 0x7fffffff, 0xffffffff };
-
-size_t wxMBConvUTF8::MB2WC(wchar_t *buf, const char *psz, size_t n) const
+const wxWCharBuffer
+wxMBConv::cMB2WC(const char *inBuff, size_t inLen, size_t *outLen) const
{
- size_t len = 0;
-
- while (*psz && ((!buf) || (len < n)))
+ const size_t dstLen = ToWChar(NULL, 0, inBuff, inLen);
+ if ( dstLen != wxCONV_FAILED )
{
- unsigned char cc = *psz++, fc = cc;
- unsigned cnt;
- for (cnt = 0; fc & 0x80; cnt++)
- fc <<= 1;
- if (!cnt)
- {
- // plain ASCII char
- if (buf)
- *buf++ = cc;
- len++;
- }
- else
+ // notice that we allocate space for dstLen+1 wide characters here
+ // because we want the buffer to always be NUL-terminated, even if the
+ // input isn't (as otherwise the caller has no way to know its length)
+ wxWCharBuffer wbuf(dstLen);
+ wbuf.data()[dstLen] = L'\0';
+ if ( ToWChar(wbuf.data(), dstLen, inBuff, inLen) != wxCONV_FAILED )
{
- cnt--;
- if (!cnt)
- {
- // invalid UTF-8 sequence
- return (size_t)-1;
- }
- else
+ if ( outLen )
{
- unsigned ocnt = cnt - 1;
- wxUint32 res = cc & (0x3f >> cnt);
- while (cnt--)
- {
- cc = *psz++;
- if ((cc & 0xC0) != 0x80)
- {
- // invalid UTF-8 sequence
- return (size_t)-1;
- }
- res = (res << 6) | (cc & 0x3f);
- }
- if (res <= utf8_max[ocnt])
- {
- // illegal UTF-8 encoding
- return (size_t)-1;
- }
-#ifdef WC_UTF16
- size_t pa = encode_utf16(res, buf);
- if (pa == (size_t)-1)
- return (size_t)-1;
- if (buf)
- buf += pa;
- len += pa;
-#else // !WC_UTF16
- if (buf)
- *buf++ = res;
- len++;
-#endif // WC_UTF16/!WC_UTF16
+ *outLen = dstLen;
+
+ // we also need to handle NUL-terminated input strings
+ // specially: for them the output is the length of the string
+ // excluding the trailing NUL, however if we're asked to
+ // convert a specific number of characters we return the length
+ // of the resulting output even if it's NUL-terminated
+ if ( inLen == wxNO_LEN )
+ (*outLen)--;
}
+
+ return wbuf;
}
}
- if (buf && (len < n))
- *buf = 0;
- return len;
+
+ if ( outLen )
+ *outLen = 0;
+
+ return wxWCharBuffer();
}
-size_t wxMBConvUTF8::WC2MB(char *buf, const wchar_t *psz, size_t n) const
+const wxCharBuffer
+wxMBConv::cWC2MB(const wchar_t *inBuff, size_t inLen, size_t *outLen) const
{
- size_t len = 0;
-
- while (*psz && ((!buf) || (len < n)))
+ size_t dstLen = FromWChar(NULL, 0, inBuff, inLen);
+ if ( dstLen != wxCONV_FAILED )
{
- wxUint32 cc;
-#ifdef WC_UTF16
- size_t pa = decode_utf16(psz, cc);
- psz += (pa == (size_t)-1) ? 1 : pa;
-#else
- cc=(*psz++) & 0x7fffffff;
-#endif
- unsigned cnt;
- for (cnt = 0; cc > utf8_max[cnt]; cnt++) {}
- if (!cnt)
- {
- // plain ASCII char
- if (buf)
- *buf++ = (char) cc;
- len++;
- }
+ const size_t nulLen = GetMBNulLen();
- else
+ // as above, ensure that the buffer is always NUL-terminated, even if
+ // the input is not
+ wxCharBuffer buf(dstLen + nulLen - 1);
+ memset(buf.data() + dstLen, 0, nulLen);
+ if ( FromWChar(buf.data(), dstLen, inBuff, inLen) != wxCONV_FAILED )
{
- len += cnt + 1;
- if (buf)
+ if ( outLen )
{
- *buf++ = (char) ((-128 >> cnt) | ((cc >> (cnt * 6)) & (0x3f >> cnt)));
- while (cnt--)
- *buf++ = (char) (0x80 | ((cc >> (cnt * 6)) & 0x3f));
+ *outLen = dstLen;
+
+ if ( inLen == wxNO_LEN )
+ {
+ // in this case both input and output are NUL-terminated
+ // and we're not supposed to count NUL
+ *outLen -= nulLen;
+ }
}
+
+ return buf;
}
}
- if (buf && (len<n)) *buf = 0;
+ if ( outLen )
+ *outLen = 0;
- return len;
+ return wxCharBuffer();
}
-
-
-
// ----------------------------------------------------------------------------
-// UTF-16
+// wxMBConvLibc
// ----------------------------------------------------------------------------
-#ifdef WORDS_BIGENDIAN
-#define wxMBConvUTF16straight wxMBConvUTF16BE
-#define wxMBConvUTF16swap wxMBConvUTF16LE
-#else
-#define wxMBConvUTF16swap wxMBConvUTF16BE
-#define wxMBConvUTF16straight wxMBConvUTF16LE
-#endif
+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);
+}
-WXDLLIMPEXP_DATA_BASE(wxMBConvUTF16LE) wxConvUTF16LE;
-WXDLLIMPEXP_DATA_BASE(wxMBConvUTF16BE) wxConvUTF16BE;
+// ----------------------------------------------------------------------------
+// wxConvBrokenFileNames
+// ----------------------------------------------------------------------------
+#ifdef __UNIX__
+wxConvBrokenFileNames::wxConvBrokenFileNames(const wxString& charset)
+{
+ if ( wxStricmp(charset, _T("UTF-8")) == 0 ||
+ wxStricmp(charset, _T("UTF8")) == 0 )
+ m_conv = new wxMBConvUTF8(wxMBConvUTF8::MAP_INVALID_UTF8_TO_PUA);
+ else
+ m_conv = new wxCSConv(charset);
+}
+#endif // __UNIX__
+// ----------------------------------------------------------------------------
+// UTF-7
+// ----------------------------------------------------------------------------
-#ifdef WC_UTF16
+// Implementation (C) 2004 Fredrik Roubert
+//
+// Changes to work in streaming mode (C) 2008 Vadim Zeitlin
+//
+// BASE64 decoding table
+//
+static const unsigned char utf7unb64[] =
+{
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0x3e, 0xff, 0xff, 0xff, 0x3f,
+ 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b,
+ 0x3c, 0x3d, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,
+ 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e,
+ 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16,
+ 0x17, 0x18, 0x19, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20,
+ 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28,
+ 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30,
+ 0x31, 0x32, 0x33, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
+};
-// copy 16bit MB to 16bit String
-size_t wxMBConvUTF16straight::MB2WC(wchar_t *buf, const char *psz, size_t n) const
+size_t wxMBConvUTF7::ToWChar(wchar_t *dst, size_t dstLen,
+ const char *src, size_t srcLen) const
{
- size_t len=0;
+ DecoderState stateOrig,
+ *statePtr;
+ if ( srcLen == wxNO_LEN )
+ {
+ // convert the entire string, up to and including the trailing NUL
+ srcLen = strlen(src) + 1;
- while (*(wxUint16*)psz && (!buf || len < n))
+ // when working on the entire strings we don't update nor use the shift
+ // state from the previous call
+ statePtr = &stateOrig;
+ }
+ else // when working with partial strings we do use the shift state
{
- if (buf)
- *buf++ = *(wxUint16*)psz;
- len++;
+ statePtr = const_cast<DecoderState *>(&m_stateDecoder);
- psz += sizeof(wxUint16);
+ // also save the old state to be able to rollback to it on error
+ stateOrig = m_stateDecoder;
}
- if (buf && len<n) *buf=0;
- return len;
-}
+ // but to simplify the code below we use this variable in both cases
+ DecoderState& state = *statePtr;
-// copy 16bit String to 16bit MB
-size_t wxMBConvUTF16straight::WC2MB(char *buf, const wchar_t *psz, size_t n) const
-{
- size_t len=0;
+ // number of characters [which would have been] written to dst [if it were
+ // not NULL]
+ size_t len = 0;
- while (*psz && (!buf || len < n))
+ const char * const srcEnd = src + srcLen;
+
+ while ( (src < srcEnd) && (!dst || (len < dstLen)) )
{
- if (buf)
+ const unsigned char cc = *src++;
+
+ if ( state.IsShifted() )
{
- *(wxUint16*)buf = *psz;
- buf += sizeof(wxUint16);
+ const unsigned char dc = utf7unb64[cc];
+ if ( dc == 0xff )
+ {
+ // end of encoded part, check that nothing was left: there can
+ // be up to 4 bits of 0 padding but nothing else (we also need
+ // to check isLSB as we count bits modulo 8 while a valid UTF-7
+ // encoded sequence must contain an integral number of UTF-16
+ // characters)
+ if ( state.isLSB || state.bit > 4 ||
+ (state.accum & ((1 << state.bit) - 1)) )
+ {
+ if ( !len )
+ state = stateOrig;
+
+ return wxCONV_FAILED;
+ }
+
+ state.ToDirect();
+
+ // re-parse this character normally below unless it's '-' which
+ // is consumed by the decoder
+ if ( cc == '-' )
+ continue;
+ }
+ else // valid encoded character
+ {
+ // mini base64 decoder: each character is 6 bits
+ state.bit += 6;
+ state.accum <<= 6;
+ state.accum += dc;
+
+ if ( state.bit >= 8 )
+ {
+ // got the full byte, consume it
+ state.bit -= 8;
+ unsigned char b = (state.accum >> state.bit) & 0x00ff;
+
+ if ( state.isLSB )
+ {
+ // we've got the full word, output it
+ if ( dst )
+ *dst++ = (state.msb << 8) | b;
+ len++;
+ state.isLSB = false;
+ }
+ else // MSB
+ {
+ // just store it while we wait for LSB
+ state.msb = b;
+ state.isLSB = true;
+ }
+ }
+ }
+ }
+
+ if ( state.IsDirect() )
+ {
+ // start of an encoded segment?
+ if ( cc == '+' )
+ {
+ if ( *src == '-' )
+ {
+ // just the encoded plus sign, don't switch to shifted mode
+ if ( dst )
+ *dst++ = '+';
+ len++;
+ src++;
+ }
+ else if ( utf7unb64[(unsigned)*src] == 0xff )
+ {
+ // empty encoded chunks are not allowed
+ if ( !len )
+ state = stateOrig;
+
+ return wxCONV_FAILED;
+ }
+ else // base-64 encoded chunk follows
+ {
+ state.ToShifted();
+ }
+ }
+ else // not '+'
+ {
+ // only printable 7 bit ASCII characters (with the exception of
+ // NUL, TAB, CR and LF) can be used directly
+ if ( cc >= 0x7f || (cc < ' ' &&
+ !(cc == '\0' || cc == '\t' || cc == '\r' || cc == '\n')) )
+ return wxCONV_FAILED;
+
+ if ( dst )
+ *dst++ = cc;
+ len++;
+ }
}
- len += sizeof(wxUint16);
- psz++;
}
- if (buf && len<=n-sizeof(wxUint16)) *(wxUint16*)buf=0;
+
+ if ( !len )
+ {
+ // as we didn't read any characters we should be called with the same
+ // data (followed by some more new data) again later so don't save our
+ // state
+ state = stateOrig;
+
+ return wxCONV_FAILED;
+ }
return len;
}
+//
+// BASE64 encoding table
+//
+static const unsigned char utf7enb64[] =
+{
+ 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H',
+ 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P',
+ 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X',
+ 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f',
+ 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n',
+ 'o', 'p', 'q', 'r', 's', 't', 'u', 'v',
+ 'w', 'x', 'y', 'z', '0', '1', '2', '3',
+ '4', '5', '6', '7', '8', '9', '+', '/'
+};
+
+//
+// UTF-7 encoding table
+//
+// 0 - Set D (directly encoded characters)
+// 1 - Set O (optional direct characters)
+// 2 - whitespace characters (optional)
+// 3 - special characters
+//
+static const unsigned char utf7encode[128] =
+{
+ 0, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 3, 3, 2, 3, 3,
+ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
+ 2, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 3, 0, 0, 0, 3,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0,
+ 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 3, 1, 1, 1,
+ 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 3, 3
+};
-// swap 16bit MB to 16bit String
-size_t wxMBConvUTF16swap::MB2WC(wchar_t *buf, const char *psz, size_t n) const
+static inline bool wxIsUTF7Direct(wchar_t wc)
{
- size_t len=0;
+ return wc < 0x80 && utf7encode[wc] < 1;
+}
- while (*(wxUint16*)psz && (!buf || len < n))
+size_t wxMBConvUTF7::FromWChar(char *dst, size_t dstLen,
+ const wchar_t *src, size_t srcLen) const
+{
+ EncoderState stateOrig,
+ *statePtr;
+ if ( srcLen == wxNO_LEN )
{
- if (buf)
+ // we don't apply the stored state when operating on entire strings at
+ // once
+ statePtr = &stateOrig;
+
+ srcLen = wxWcslen(src) + 1;
+ }
+ else // do use the mode we left the output in previously
+ {
+ stateOrig = m_stateEncoder;
+ statePtr = const_cast<EncoderState *>(&m_stateEncoder);
+ }
+
+ EncoderState& state = *statePtr;
+
+
+ size_t len = 0;
+
+ const wchar_t * const srcEnd = src + srcLen;
+ while ( src < srcEnd && (!dst || len < dstLen) )
+ {
+ wchar_t cc = *src++;
+ if ( wxIsUTF7Direct(cc) )
+ {
+ if ( state.IsShifted() )
+ {
+ // pad with zeros the last encoded block if necessary
+ if ( state.bit )
+ {
+ if ( dst )
+ *dst++ = utf7enb64[((state.accum % 16) << (6 - state.bit)) % 64];
+ len++;
+ }
+
+ state.ToDirect();
+
+ if ( dst )
+ *dst++ = '-';
+ len++;
+ }
+
+ if ( dst )
+ *dst++ = (char)cc;
+ len++;
+ }
+ else if ( cc == '+' && state.IsDirect() )
+ {
+ if ( dst )
+ {
+ *dst++ = '+';
+ *dst++ = '-';
+ }
+
+ len += 2;
+ }
+#ifndef WC_UTF16
+ else if (((wxUint32)cc) > 0xffff)
+ {
+ // no surrogate pair generation (yet?)
+ return wxCONV_FAILED;
+ }
+#endif
+ else
{
- ((char *)buf)[0] = psz[1];
- ((char *)buf)[1] = psz[0];
- buf++;
+ if ( state.IsDirect() )
+ {
+ state.ToShifted();
+
+ if ( dst )
+ *dst++ = '+';
+ len++;
+ }
+
+ // BASE64 encode string
+ for ( ;; )
+ {
+ for ( unsigned lsb = 0; lsb < 2; lsb++ )
+ {
+ state.accum <<= 8;
+ state.accum += lsb ? cc & 0xff : (cc & 0xff00) >> 8;
+
+ for (state.bit += 8; state.bit >= 6; )
+ {
+ state.bit -= 6;
+ if ( dst )
+ *dst++ = utf7enb64[(state.accum >> state.bit) % 64];
+ len++;
+ }
+ }
+
+ if ( src == srcEnd || wxIsUTF7Direct(cc = *src) )
+ break;
+
+ src++;
+ }
}
- len++;
- psz += sizeof(wxUint16);
}
- if (buf && len<n) *buf=0;
+
+ // we need to restore the original encoder state if we were called just to
+ // calculate the amount of space needed as we will presumably be called
+ // again to really convert the data now
+ if ( !dst )
+ state = stateOrig;
return len;
}
+// ----------------------------------------------------------------------------
+// UTF-8
+// ----------------------------------------------------------------------------
-// swap 16bit MB to 16bit String
-size_t wxMBConvUTF16swap::WC2MB(char *buf, const wchar_t *psz, size_t n) const
+static const wxUint32 utf8_max[]=
+ { 0x7f, 0x7ff, 0xffff, 0x1fffff, 0x3ffffff, 0x7fffffff, 0xffffffff };
+
+// boundaries of the private use area we use to (temporarily) remap invalid
+// characters invalid in a UTF-8 encoded string
+const wxUint32 wxUnicodePUA = 0x100000;
+const wxUint32 wxUnicodePUAEnd = wxUnicodePUA + 256;
+
+// this table gives the length of the UTF-8 encoding from its first character:
+const unsigned char tableUtf8Lengths[256] = {
+ // single-byte sequences (ASCII):
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 00..0F
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 10..1F
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 20..2F
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 30..3F
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 40..4F
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 50..5F
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 60..6F
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 70..7F
+
+ // these are invalid:
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 80..8F
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 90..9F
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // A0..AF
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // B0..BF
+ 0, 0, // C0,C1
+
+ // two-byte sequences:
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, // C2..CF
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, // D0..DF
+
+ // three-byte sequences:
+ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, // E0..EF
+
+ // four-byte sequences:
+ 4, 4, 4, 4, 4, // F0..F4
+
+ // these are invalid again (5- or 6-byte
+ // sequences and sequences for code points
+ // above U+10FFFF, as restricted by RFC 3629):
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 // F5..FF
+};
+
+size_t
+wxMBConvStrictUTF8::ToWChar(wchar_t *dst, size_t dstLen,
+ const char *src, size_t srcLen) const
{
- size_t len=0;
+ wchar_t *out = dstLen ? dst : NULL;
+ size_t written = 0;
- while (*psz && (!buf || len < n))
+ if ( srcLen == wxNO_LEN )
+ srcLen = strlen(src) + 1;
+
+ for ( const char *p = src; ; p++ )
{
- if (buf)
+ if ( !(srcLen == wxNO_LEN ? *p : srcLen) )
+ {
+ // all done successfully, just add the trailing NULL if we are not
+ // using explicit length
+ if ( srcLen == wxNO_LEN )
+ {
+ if ( out )
+ {
+ if ( !dstLen )
+ break;
+
+ *out = L'\0';
+ }
+
+ written++;
+ }
+
+ return written;
+ }
+
+ if ( out && !dstLen-- )
+ break;
+
+ wxUint32 code;
+ unsigned char c = *p;
+
+ if ( c < 0x80 )
{
- *buf++ = ((char*)psz)[1];
- *buf++ = ((char*)psz)[0];
+ if ( srcLen == 0 ) // the test works for wxNO_LEN too
+ break;
+
+ if ( srcLen != wxNO_LEN )
+ srcLen--;
+
+ code = c;
}
- len += sizeof(wxUint16);
- psz++;
+ else
+ {
+ unsigned len = tableUtf8Lengths[c];
+ if ( !len )
+ break;
+
+ if ( srcLen < len ) // the test works for wxNO_LEN too
+ break;
+
+ if ( srcLen != wxNO_LEN )
+ srcLen -= len;
+
+ // Char. number range | UTF-8 octet sequence
+ // (hexadecimal) | (binary)
+ // ----------------------+----------------------------------------
+ // 0000 0000 - 0000 007F | 0xxxxxxx
+ // 0000 0080 - 0000 07FF | 110xxxxx 10xxxxxx
+ // 0000 0800 - 0000 FFFF | 1110xxxx 10xxxxxx 10xxxxxx
+ // 0001 0000 - 0010 FFFF | 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
+ //
+ // Code point value is stored in bits marked with 'x',
+ // lowest-order bit of the value on the right side in the diagram
+ // above. (from RFC 3629)
+
+ // mask to extract lead byte's value ('x' bits above), by sequence
+ // length:
+ static const unsigned char leadValueMask[] = { 0x7F, 0x1F, 0x0F, 0x07 };
+
+ // mask and value of lead byte's most significant bits, by length:
+ static const unsigned char leadMarkerMask[] = { 0x80, 0xE0, 0xF0, 0xF8 };
+ static const unsigned char leadMarkerVal[] = { 0x00, 0xC0, 0xE0, 0xF0 };
+
+ len--; // it's more convenient to work with 0-based length here
+
+ // extract the lead byte's value bits:
+ if ( (c & leadMarkerMask[len]) != leadMarkerVal[len] )
+ break;
+
+ code = c & leadValueMask[len];
+
+ // all remaining bytes, if any, are handled in the same way
+ // regardless of sequence's length:
+ for ( ; len; --len )
+ {
+ c = *++p;
+ if ( (c & 0xC0) != 0x80 )
+ return wxCONV_FAILED;
+
+ code <<= 6;
+ code |= c & 0x3F;
+ }
+ }
+
+#ifdef WC_UTF16
+ // cast is ok because wchar_t == wxUint16 if WC_UTF16
+ if ( encode_utf16(code, (wxUint16 *)out) == 2 )
+ {
+ if ( out )
+ out++;
+ written++;
+ }
+#else // !WC_UTF16
+ if ( out )
+ *out = code;
+#endif // WC_UTF16/!WC_UTF16
+
+ if ( out )
+ out++;
+
+ written++;
}
- if (buf && len<=n-sizeof(wxUint16)) *(wxUint16*)buf=0;
- return len;
+ return wxCONV_FAILED;
}
+size_t
+wxMBConvStrictUTF8::FromWChar(char *dst, size_t dstLen,
+ const wchar_t *src, size_t srcLen) const
+{
+ char *out = dstLen ? dst : NULL;
+ size_t written = 0;
+
+ for ( const wchar_t *wp = src; ; wp++ )
+ {
+ if ( !(srcLen == wxNO_LEN ? *wp : srcLen) )
+ {
+ // all done successfully, just add the trailing NULL if we are not
+ // using explicit length
+ if ( srcLen == wxNO_LEN )
+ {
+ if ( out )
+ {
+ if ( !dstLen )
+ break;
+
+ *out = '\0';
+ }
+
+ written++;
+ }
+
+ return written;
+ }
+
+ if ( srcLen != wxNO_LEN )
+ srcLen--;
-#else // WC_UTF16
+ wxUint32 code;
+#ifdef WC_UTF16
+ // cast is ok for WC_UTF16
+ if ( decode_utf16((const wxUint16 *)wp, code) == 2 )
+ {
+ // skip the next char too as we decoded a surrogate
+ wp++;
+ }
+#else // wchar_t is UTF-32
+ code = *wp & 0x7fffffff;
+#endif
+ unsigned len;
+ if ( code <= 0x7F )
+ {
+ len = 1;
+ if ( out )
+ {
+ if ( dstLen < len )
+ break;
-// copy 16bit MB to 32bit String
-size_t wxMBConvUTF16straight::MB2WC(wchar_t *buf, const char *psz, size_t n) const
+ out[0] = (char)code;
+ }
+ }
+ else if ( code <= 0x07FF )
+ {
+ len = 2;
+ if ( out )
+ {
+ if ( dstLen < len )
+ break;
+
+ // NB: this line takes 6 least significant bits, encodes them as
+ // 10xxxxxx and discards them so that the next byte can be encoded:
+ out[1] = 0x80 | (code & 0x3F); code >>= 6;
+ out[0] = 0xC0 | code;
+ }
+ }
+ else if ( code < 0xFFFF )
+ {
+ len = 3;
+ if ( out )
+ {
+ if ( dstLen < len )
+ break;
+
+ out[2] = 0x80 | (code & 0x3F); code >>= 6;
+ out[1] = 0x80 | (code & 0x3F); code >>= 6;
+ out[0] = 0xE0 | code;
+ }
+ }
+ else if ( code <= 0x10FFFF )
+ {
+ len = 4;
+ if ( out )
+ {
+ if ( dstLen < len )
+ break;
+
+ out[3] = 0x80 | (code & 0x3F); code >>= 6;
+ out[2] = 0x80 | (code & 0x3F); code >>= 6;
+ out[1] = 0x80 | (code & 0x3F); code >>= 6;
+ out[0] = 0xF0 | code;
+ }
+ }
+ else
+ {
+ wxFAIL_MSG( _T("trying to encode undefined Unicode character") );
+ break;
+ }
+
+ if ( out )
+ {
+ out += len;
+ dstLen -= len;
+ }
+
+ written += len;
+ }
+
+ // we only get here if an error occurs during decoding
+ return wxCONV_FAILED;
+}
+
+size_t wxMBConvUTF8::ToWChar(wchar_t *buf, size_t n,
+ const char *psz, size_t srcLen) const
{
- size_t len=0;
+ if ( m_options == MAP_INVALID_UTF8_NOT )
+ return wxMBConvStrictUTF8::ToWChar(buf, n, psz, srcLen);
+
+ size_t len = 0;
- while (*(wxUint16*)psz && (!buf || len < n))
+ while ((srcLen == wxNO_LEN ? *psz : srcLen--) && ((!buf) || (len < n)))
{
- wxUint32 cc;
- size_t pa=decode_utf16((wxUint16*)psz, cc);
- if (pa == (size_t)-1)
- return pa;
+ const char *opsz = psz;
+ bool invalid = false;
+ unsigned char cc = *psz++, fc = cc;
+ unsigned cnt;
+ for (cnt = 0; fc & 0x80; cnt++)
+ fc <<= 1;
- if (buf)
- *buf++ = cc;
- len++;
- psz += pa * sizeof(wxUint16);
+ 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
+ {
+ cnt--;
+ if (!cnt)
+ {
+ // invalid UTF-8 sequence
+ invalid = true;
+ }
+ else
+ {
+ unsigned ocnt = cnt - 1;
+ wxUint32 res = cc & (0x3f >> cnt);
+ while (cnt--)
+ {
+ cc = *psz;
+ if ((cc & 0xC0) != 0x80)
+ {
+ // invalid UTF-8 sequence
+ invalid = true;
+ break;
+ }
+
+ psz++;
+ res = (res << 6) | (cc & 0x3f);
+ }
+
+ if (invalid || res <= utf8_max[ocnt])
+ {
+ // illegal UTF-8 encoding
+ invalid = true;
+ }
+ else if ((m_options & MAP_INVALID_UTF8_TO_PUA) &&
+ res >= wxUnicodePUA && res < wxUnicodePUAEnd)
+ {
+ // if one of our PUA characters turns up externally
+ // it must also be treated as an illegal sequence
+ // (a bit like you have to escape an escape character)
+ invalid = true;
+ }
+ else
+ {
+#ifdef WC_UTF16
+ // cast is ok because wchar_t == wxUint16 if WC_UTF16
+ size_t pa = encode_utf16(res, (wxUint16 *)buf);
+ if (pa == wxCONV_FAILED)
+ {
+ invalid = true;
+ }
+ else
+ {
+ if (buf)
+ buf += pa;
+ len += pa;
+ }
+#else // !WC_UTF16
+ if (buf)
+ *buf++ = (wchar_t)res;
+ len++;
+#endif // WC_UTF16/!WC_UTF16
+ }
+ }
+
+ if (invalid)
+ {
+ if (m_options & MAP_INVALID_UTF8_TO_PUA)
+ {
+ while (opsz < psz && (!buf || len < n))
+ {
+#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 != wxCONV_FAILED);
+ if (buf)
+ buf += pa;
+ opsz++;
+ len += pa;
+#else
+ if (buf)
+ *buf++ = (wchar_t)(wxUnicodePUA + (unsigned char)*opsz);
+ opsz++;
+ len++;
+#endif
+ }
+ }
+ else if (m_options & MAP_INVALID_UTF8_TO_OCTAL)
+ {
+ while (opsz < psz && (!buf || len < n))
+ {
+ if ( buf && len + 3 < n )
+ {
+ unsigned char on = *opsz;
+ *buf++ = L'\\';
+ *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 wxCONV_FAILED;
+ }
+ }
+ }
}
- if (buf && len<n) *buf=0;
- return len;
+ if (srcLen == wxNO_LEN && buf && (len < n))
+ *buf = 0;
+
+ return len + 1;
}
+static inline bool isoctal(wchar_t wch)
+{
+ return L'0' <= wch && wch <= L'7';
+}
-// copy 32bit String to 16bit MB
-size_t wxMBConvUTF16straight::WC2MB(char *buf, const wchar_t *psz, size_t n) const
+size_t wxMBConvUTF8::FromWChar(char *buf, size_t n,
+ const wchar_t *psz, size_t srcLen) const
{
- size_t len=0;
+ if ( m_options == MAP_INVALID_UTF8_NOT )
+ return wxMBConvStrictUTF8::FromWChar(buf, n, psz, srcLen);
+
+ size_t len = 0;
- while (*psz && (!buf || len < n))
+ while ((srcLen == wxNO_LEN ? *psz : srcLen--) && ((!buf) || (len < n)))
{
- wxUint16 cc[2];
- size_t pa=encode_utf16(*psz, cc);
+ wxUint32 cc;
- if (pa == (size_t)-1)
- return pa;
+#ifdef WC_UTF16
+ // cast is ok for WC_UTF16
+ size_t pa = decode_utf16((const wxUint16 *)psz, cc);
+ psz += (pa == wxCONV_FAILED) ? 1 : pa;
+#else
+ cc = (*psz++) & 0x7fffffff;
+#endif
- if (buf)
+ if ( (m_options & MAP_INVALID_UTF8_TO_PUA)
+ && cc >= wxUnicodePUA && cc < wxUnicodePUAEnd )
{
- *(wxUint16*)buf = cc[0];
- buf += sizeof(wxUint16);
- if (pa > 1)
+ if (buf)
+ *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)
{
- *(wxUint16*)buf = cc[1];
- buf += sizeof(wxUint16);
+ *buf++ = (char) ((psz[0] - L'0') * 0100 +
+ (psz[1] - L'0') * 010 +
+ (psz[2] - L'0'));
}
+
+ psz += 3;
+ len++;
}
+ else
+ {
+ unsigned cnt;
+ for (cnt = 0; cc > utf8_max[cnt]; cnt++)
+ {
+ }
- len += pa*sizeof(wxUint16);
- psz++;
+ if (!cnt)
+ {
+ // plain ASCII char
+ if (buf)
+ *buf++ = (char) cc;
+ len++;
+ }
+ else
+ {
+ len += cnt + 1;
+ if (buf)
+ {
+ *buf++ = (char) ((-128 >> cnt) | ((cc >> (cnt * 6)) & (0x3f >> cnt)));
+ while (cnt--)
+ *buf++ = (char) (0x80 | ((cc >> (cnt * 6)) & 0x3f));
+ }
+ }
+ }
}
- if (buf && len<=n-sizeof(wxUint16)) *(wxUint16*)buf=0;
- return len;
+ if (srcLen == wxNO_LEN && buf && (len < n))
+ *buf = 0;
+
+ return len + 1;
}
+// ============================================================================
+// UTF-16
+// ============================================================================
+
+#ifdef WORDS_BIGENDIAN
+ #define wxMBConvUTF16straight wxMBConvUTF16BE
+ #define wxMBConvUTF16swap wxMBConvUTF16LE
+#else
+ #define wxMBConvUTF16swap wxMBConvUTF16BE
+ #define wxMBConvUTF16straight wxMBConvUTF16LE
+#endif
-// swap 16bit MB to 32bit String
-size_t wxMBConvUTF16swap::MB2WC(wchar_t *buf, const char *psz, size_t n) const
+/* static */
+size_t wxMBConvUTF16Base::GetLength(const char *src, size_t srcLen)
{
- size_t len=0;
+ if ( srcLen == wxNO_LEN )
+ {
+ // count the number of bytes in input, including the trailing NULs
+ const wxUint16 *inBuff = reinterpret_cast<const wxUint16 *>(src);
+ for ( srcLen = 1; *inBuff++; srcLen++ )
+ ;
- while (*(wxUint16*)psz && (!buf || len < n))
+ srcLen *= BYTES_PER_CHAR;
+ }
+ else // we already have the length
{
- wxUint32 cc;
- char tmp[4];
- tmp[0]=psz[1]; tmp[1]=psz[0];
- tmp[2]=psz[3]; tmp[3]=psz[2];
+ // we can only convert an entire number of UTF-16 characters
+ if ( srcLen % BYTES_PER_CHAR )
+ return wxCONV_FAILED;
+ }
- size_t pa=decode_utf16((wxUint16*)tmp, cc);
- if (pa == (size_t)-1)
- return pa;
+ return srcLen;
+}
- if (buf)
- *buf++ = cc;
+// case when in-memory representation is UTF-16 too
+#ifdef WC_UTF16
+
+// ----------------------------------------------------------------------------
+// conversions without endianness change
+// ----------------------------------------------------------------------------
+
+size_t
+wxMBConvUTF16straight::ToWChar(wchar_t *dst, size_t dstLen,
+ const char *src, size_t srcLen) const
+{
+ // set up the scene for using memcpy() (which is presumably more efficient
+ // than copying the bytes one by one)
+ srcLen = GetLength(src, srcLen);
+ if ( srcLen == wxNO_LEN )
+ return wxCONV_FAILED;
+
+ const size_t inLen = srcLen / BYTES_PER_CHAR;
+ if ( dst )
+ {
+ if ( dstLen < inLen )
+ return wxCONV_FAILED;
- len++;
- psz += pa * sizeof(wxUint16);
+ memcpy(dst, src, srcLen);
}
- if (buf && len<n) *buf=0;
- return len;
+ return inLen;
+}
+
+size_t
+wxMBConvUTF16straight::FromWChar(char *dst, size_t dstLen,
+ const wchar_t *src, size_t srcLen) const
+{
+ if ( srcLen == wxNO_LEN )
+ srcLen = wxWcslen(src) + 1;
+
+ srcLen *= BYTES_PER_CHAR;
+
+ if ( dst )
+ {
+ if ( dstLen < srcLen )
+ return wxCONV_FAILED;
+
+ memcpy(dst, src, srcLen);
+ }
+
+ return srcLen;
}
+// ----------------------------------------------------------------------------
+// endian-reversing conversions
+// ----------------------------------------------------------------------------
-// swap 32bit String to 16bit MB
-size_t wxMBConvUTF16swap::WC2MB(char *buf, const wchar_t *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 (*psz && (!buf || len < n))
+ srcLen /= BYTES_PER_CHAR;
+
+ if ( dst )
{
- wxUint16 cc[2];
- size_t pa=encode_utf16(*psz, cc);
+ if ( dstLen < srcLen )
+ return wxCONV_FAILED;
- if (pa == (size_t)-1)
- return pa;
+ const wxUint16 *inBuff = reinterpret_cast<const wxUint16 *>(src);
+ for ( size_t n = 0; n < srcLen; n++, inBuff++ )
+ {
+ *dst++ = wxUINT16_SWAP_ALWAYS(*inBuff);
+ }
+ }
- if (buf)
+ return srcLen;
+}
+
+size_t
+wxMBConvUTF16swap::FromWChar(char *dst, size_t dstLen,
+ const wchar_t *src, size_t srcLen) const
+{
+ if ( srcLen == wxNO_LEN )
+ srcLen = wxWcslen(src) + 1;
+
+ srcLen *= BYTES_PER_CHAR;
+
+ if ( dst )
+ {
+ if ( dstLen < srcLen )
+ return wxCONV_FAILED;
+
+ wxUint16 *outBuff = reinterpret_cast<wxUint16 *>(dst);
+ for ( size_t n = 0; n < srcLen; n += BYTES_PER_CHAR, src++ )
{
- *buf++ = ((char*)cc)[1];
- *buf++ = ((char*)cc)[0];
- if (pa > 1)
+ *outBuff++ = wxUINT16_SWAP_ALWAYS(*src);
+ }
+ }
+
+ return srcLen;
+}
+
+#else // !WC_UTF16: wchar_t is UTF-32
+
+// ----------------------------------------------------------------------------
+// conversions without endianness change
+// ----------------------------------------------------------------------------
+
+size_t
+wxMBConvUTF16straight::ToWChar(wchar_t *dst, size_t dstLen,
+ const char *src, size_t srcLen) const
+{
+ srcLen = GetLength(src, srcLen);
+ if ( srcLen == wxNO_LEN )
+ return wxCONV_FAILED;
+
+ const size_t inLen = srcLen / BYTES_PER_CHAR;
+ if ( !dst )
+ {
+ // 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 outLen = 0;
+ const wxUint16 *inBuff = reinterpret_cast<const wxUint16 *>(src);
+ for ( const wxUint16 * const inEnd = inBuff + inLen; inBuff < inEnd; )
+ {
+ const wxUint32 ch = wxDecodeSurrogate(&inBuff);
+ if ( !inBuff )
+ return wxCONV_FAILED;
+
+ if ( ++outLen > dstLen )
+ return wxCONV_FAILED;
+
+ *dst++ = ch;
+ }
+
+
+ return outLen;
+}
+
+size_t
+wxMBConvUTF16straight::FromWChar(char *dst, size_t dstLen,
+ const wchar_t *src, size_t srcLen) const
+{
+ if ( srcLen == wxNO_LEN )
+ srcLen = wxWcslen(src) + 1;
+
+ size_t outLen = 0;
+ wxUint16 *outBuff = reinterpret_cast<wxUint16 *>(dst);
+ for ( size_t n = 0; n < srcLen; n++ )
+ {
+ wxUint16 cc[2];
+ const size_t numChars = encode_utf16(*src++, cc);
+ if ( numChars == wxCONV_FAILED )
+ return wxCONV_FAILED;
+
+ outLen += numChars * BYTES_PER_CHAR;
+ if ( outBuff )
+ {
+ if ( outLen > dstLen )
+ return wxCONV_FAILED;
+
+ *outBuff++ = cc[0];
+ if ( numChars == 2 )
{
- *buf++ = ((char*)cc)[3];
- *buf++ = ((char*)cc)[2];
+ // second character of a surrogate
+ *outBuff++ = cc[1];
}
}
+ }
- len += pa*sizeof(wxUint16);
- psz++;
+ return outLen;
+}
+
+// ----------------------------------------------------------------------------
+// endian-reversing conversions
+// ----------------------------------------------------------------------------
+
+size_t
+wxMBConvUTF16swap::ToWChar(wchar_t *dst, size_t dstLen,
+ const char *src, size_t srcLen) const
+{
+ srcLen = GetLength(src, srcLen);
+ if ( srcLen == wxNO_LEN )
+ return wxCONV_FAILED;
+
+ const size_t inLen = srcLen / BYTES_PER_CHAR;
+ if ( !dst )
+ {
+ // 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;
}
- if (buf && len<=n-sizeof(wxUint16)) *(wxUint16*)buf=0;
- return len;
+ size_t outLen = 0;
+ const wxUint16 *inBuff = reinterpret_cast<const wxUint16 *>(src);
+ for ( const wxUint16 * const inEnd = inBuff + inLen; inBuff < inEnd; )
+ {
+ wxUint32 ch;
+ wxUint16 tmp[2];
+
+ 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++;
+
+ if ( ++outLen > dstLen )
+ return wxCONV_FAILED;
+
+ *dst++ = ch;
+ }
+
+
+ return outLen;
}
-#endif // WC_UTF16
+size_t
+wxMBConvUTF16swap::FromWChar(char *dst, size_t dstLen,
+ const wchar_t *src, size_t srcLen) const
+{
+ if ( srcLen == wxNO_LEN )
+ srcLen = wxWcslen(src) + 1;
+ size_t outLen = 0;
+ wxUint16 *outBuff = reinterpret_cast<wxUint16 *>(dst);
+ for ( const wchar_t *srcEnd = src + srcLen; src < srcEnd; src++ )
+ {
+ wxUint16 cc[2];
+ const size_t numChars = encode_utf16(*src, cc);
+ if ( numChars == wxCONV_FAILED )
+ return wxCONV_FAILED;
-// ----------------------------------------------------------------------------
+ outLen += numChars * BYTES_PER_CHAR;
+ if ( outBuff )
+ {
+ if ( outLen > dstLen )
+ return wxCONV_FAILED;
+
+ *outBuff++ = wxUINT16_SWAP_ALWAYS(cc[0]);
+ if ( numChars == 2 )
+ {
+ // second character of a surrogate
+ *outBuff++ = wxUINT16_SWAP_ALWAYS(cc[1]);
+ }
+ }
+ }
+
+ return outLen;
+}
+
+#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 = 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;
-
- while (*(wxUint32*)psz && (!buf || len < n))
+ srcLen = GetLength(src, srcLen);
+ if ( srcLen == wxNO_LEN )
+ return wxCONV_FAILED;
+
+ const wxUint32 *inBuff = 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<n) *buf=0;
- return len;
+ return outLen;
}
-
-// copy 16bit String to 32bit MB
-size_t wxMBConvUTF32straight::WC2MB(char *buf, const wchar_t *psz, size_t n) const
+size_t
+wxMBConvUTF32straight::FromWChar(char *dst, size_t dstLen,
+ const wchar_t *src, size_t srcLen) const
{
- size_t len=0;
+ if ( srcLen == wxNO_LEN )
+ srcLen = wxWcslen(src) + 1;
- while (*psz && (!buf || len < n))
+ if ( !dst )
{
- wxUint32 cc;
+ // optimization: return maximal space which could be needed for this
+ // string instead of the exact amount which could be less if there are
+ // any surrogates in the input
+ //
+ // we consider that surrogates are rare enough to make it worthwhile to
+ // avoid running the loop below at the cost of slightly extra memory
+ // consumption
+ return srcLen * BYTES_PER_CHAR;
+ }
- size_t pa=decode_utf16(psz, cc);
- if (pa == (size_t)-1)
- return pa;
+ wxUint32 *outBuff = reinterpret_cast<wxUint32 *>(dst);
+ size_t outLen = 0;
+ for ( const wchar_t * const srcEnd = src + srcLen; src < srcEnd; )
+ {
+ const wxUint32 ch = wxDecodeSurrogate(&src);
+ if ( !src )
+ return wxCONV_FAILED;
- if (buf)
- {
- *(wxUint32*)buf = cc;
- buf += sizeof(wxUint32);
- }
- len += sizeof(wxUint32);
- psz += pa;
+ outLen += BYTES_PER_CHAR;
+
+ if ( outLen > dstLen )
+ return wxCONV_FAILED;
+
+ *outBuff++ = ch;
}
- if (buf && len<=n-sizeof(wxUint32)) *(wxUint32*)buf=0;
- return len;
+ 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;
-
- while (*(wxUint32*)psz && (!buf || len < n))
+ srcLen = GetLength(src, srcLen);
+ if ( srcLen == wxNO_LEN )
+ return wxCONV_FAILED;
+
+ const wxUint32 *inBuff = 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<n) *buf=0;
- return len;
+ return outLen;
}
-
-// swap 16bit String to 32bit MB
-size_t wxMBConvUTF32swap::WC2MB(char *buf, const wchar_t *psz, size_t n) const
+size_t
+wxMBConvUTF32swap::FromWChar(char *dst, size_t dstLen,
+ const wchar_t *src, size_t srcLen) const
{
- size_t len=0;
+ if ( srcLen == wxNO_LEN )
+ srcLen = wxWcslen(src) + 1;
+
+ if ( !dst )
+ {
+ // optimization: return maximal space which could be needed for this
+ // string instead of the exact amount which could be less if there are
+ // any surrogates in the input
+ //
+ // we consider that surrogates are rare enough to make it worthwhile to
+ // avoid running the loop below at the cost of slightly extra memory
+ // consumption
+ return srcLen*BYTES_PER_CHAR;
+ }
- while (*psz && (!buf || len < n))
+ wxUint32 *outBuff = reinterpret_cast<wxUint32 *>(dst);
+ size_t outLen = 0;
+ for ( const wchar_t * const srcEnd = src + srcLen; src < srcEnd; )
{
- char cc[4];
+ const wxUint32 ch = wxDecodeSurrogate(&src);
+ if ( !src )
+ return wxCONV_FAILED;
- size_t pa=decode_utf16(psz, *(wxUint32*)cc);
- if (pa == (size_t)-1)
- return pa;
+ outLen += BYTES_PER_CHAR;
- if (buf)
- {
- *buf++ = cc[3];
- *buf++ = cc[2];
- *buf++ = cc[1];
- *buf++ = cc[0];
- }
- len += sizeof(wxUint32);
- psz += pa;
+ if ( outLen > dstLen )
+ return wxCONV_FAILED;
+
+ *outBuff++ = wxUINT32_SWAP_ALWAYS(ch);
}
- if (buf && len<=n-sizeof(wxUint32)) *(wxUint32*)buf=0;
- return len;
+ 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;
+
+ memcpy(dst, src, srcLen);
}
- if (buf && len<n) *buf=0;
- return len;
+ return inLen;
}
-
-// copy 32bit String to 32bit MB
-size_t wxMBConvUTF32straight::WC2MB(char *buf, const wchar_t *psz, size_t n) const
+size_t
+wxMBConvUTF32straight::FromWChar(char *dst, size_t dstLen,
+ const wchar_t *src, size_t srcLen) const
{
- size_t len=0;
+ if ( srcLen == wxNO_LEN )
+ srcLen = wxWcslen(src) + 1;
- while (*psz && (!buf || len < n))
+ srcLen *= BYTES_PER_CHAR;
+
+ if ( dst )
{
- if (buf)
- {
- *(wxUint32*)buf = *psz;
- buf += sizeof(wxUint32);
- }
+ if ( dstLen < srcLen )
+ return wxCONV_FAILED;
- len += sizeof(wxUint32);
- psz++;
+ memcpy(dst, src, srcLen);
}
- if (buf && len<=n-sizeof(wxUint32)) *(wxUint32*)buf=0;
-
- return len;
+ return srcLen;
}
+// ----------------------------------------------------------------------------
+// endian-reversing conversions
+// ----------------------------------------------------------------------------
-// swap 32bit MB to 32bit 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))
+ srcLen /= BYTES_PER_CHAR;
+
+ if ( dst )
{
- if (buf)
+ if ( dstLen < srcLen )
+ return wxCONV_FAILED;
+
+ const wxUint32 *inBuff = reinterpret_cast<const wxUint32 *>(src);
+ for ( size_t n = 0; n < srcLen; n++, inBuff++ )
{
- ((char *)buf)[0] = psz[3];
- ((char *)buf)[1] = psz[2];
- ((char *)buf)[2] = psz[1];
- ((char *)buf)[3] = psz[0];
- buf++;
+ *dst++ = wxUINT32_SWAP_ALWAYS(*inBuff);
}
- len++;
- psz += sizeof(wxUint32);
}
- if (buf && len<n) *buf=0;
- return len;
+ return srcLen;
}
-
-// swap 32bit String to 32bit MB
-size_t wxMBConvUTF32swap::WC2MB(char *buf, const wchar_t *psz, size_t n) const
+size_t
+wxMBConvUTF32swap::FromWChar(char *dst, size_t dstLen,
+ const wchar_t *src, size_t srcLen) const
{
- size_t len=0;
+ if ( srcLen == wxNO_LEN )
+ srcLen = wxWcslen(src) + 1;
+
+ srcLen *= BYTES_PER_CHAR;
- while (*psz && (!buf || len < n))
+ if ( dst )
{
- if (buf)
+ if ( dstLen < srcLen )
+ return wxCONV_FAILED;
+
+ wxUint32 *outBuff = reinterpret_cast<wxUint32 *>(dst);
+ for ( size_t n = 0; n < srcLen; n += BYTES_PER_CHAR, src++ )
{
- *buf++ = ((char *)psz)[3];
- *buf++ = ((char *)psz)[2];
- *buf++ = ((char *)psz)[1];
- *buf++ = ((char *)psz)[0];
+ *outBuff++ = wxUINT32_SWAP_ALWAYS(*src);
}
- len += sizeof(wxUint32);
- psz++;
}
- if (buf && len<=n-sizeof(wxUint32)) *(wxUint32*)buf=0;
- return len;
+ return srcLen;
}
-
-#endif // WC_UTF16
-
-
-// ============================================================================
-// wxCharacterSet and derived classes
-// ============================================================================
-
-// ----------------------------------------------------------------------------
-// wxCharacterSet is the ABC for the classes below
-// ----------------------------------------------------------------------------
-
-class wxCharacterSet
-{
-public:
- wxCharacterSet() { }
- 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;
-};
-
-// ----------------------------------------------------------------------------
-// ID_CharSet: implementation of wxCharacterSet using an existing wxMBConv
-// ----------------------------------------------------------------------------
-
-class ID_CharSet : public wxCharacterSet
-{
-public:
- ID_CharSet(wxMBConv *cnv) : work(cnv) {}
-
- size_t MB2WC(wchar_t *buf, const char *psz, size_t n)
- { return work ? work->MB2WC(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;
-};
+#endif // WC_UTF16/!WC_UTF16
// ============================================================================
#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
-// yet another bug in glibc) the only case when iconv() returns with (size_t)-1
-// (which means error) and says there are 0 bytes left in the input buffer --
-// when _real_ error occurs, bytes-left-in-input buffer is non-zero. Hence,
-// this alternative test for iconv() failure.
+// 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 (which means error) and says there are 0 bytes
+// left in the input buffer -- when _real_ error occurs,
+// bytes-left-in-input buffer is non-zero. Hence, this alternative test for
+// iconv() failure.
// [This bug does not appear in glibc 2.2.]
#if defined(__GLIBC__) && __GLIBC__ == 2 && __GLIBC_MINOR__ <= 1
#define ICONV_FAILED(cres, bufLeft) ((cres == (size_t)-1) && \
#define ICONV_CHAR_CAST(x) ((ICONV_CONST char **)(x))
+#define ICONV_T_INVALID ((iconv_t)-1)
+
+#if SIZEOF_WCHAR_T == 4
+ #define WC_BSWAP wxUINT32_SWAP_ALWAYS
+ #define WC_ENC wxFONTENCODING_UTF32
+#elif SIZEOF_WCHAR_T == 2
+ #define WC_BSWAP wxUINT16_SWAP_ALWAYS
+ #define WC_ENC wxFONTENCODING_UTF16
+#else // sizeof(wchar_t) != 2 nor 4
+ // does this ever happen?
+ #error "Unknown sizeof(wchar_t): please report this to wx-dev@lists.wxwindows.org"
+#endif
+
// ----------------------------------------------------------------------------
-// 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 char *name);
+ virtual ~wxMBConv_iconv();
+
+ // implement base class virtual methods
+ virtual size_t ToWChar(wchar_t *dst, size_t dstLen,
+ const char *src, size_t srcLen = wxNO_LEN) const;
+ virtual size_t FromWChar(char *dst, size_t dstLen,
+ const wchar_t *src, size_t srcLen = wxNO_LEN) const;
+ virtual size_t GetMBNulLen() const;
+
+#if wxUSE_UNICODE_UTF8
+ virtual bool IsUTF8() const;
+#endif
- 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 wxMBConv *Clone() const
+ {
+ wxMBConv_iconv *p = new wxMBConv_iconv(m_name.ToAscii());
+ p->m_minMBCharWidth = m_minMBCharWidth;
+ return p;
+ }
- bool usable() const
- { return (m2w != (iconv_t)-1) && (w2m != (iconv_t)-1); }
+ bool IsOk() const
+ { 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;
+#endif
+
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;
+ 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 *IC_CharSet::ms_wcCharsetName = NULL;
-bool IC_CharSet::ms_wcNeedsSwap = FALSE;
+// make the constructor available for unit testing
+WXDLLIMPEXP_BASE wxMBConv* new_wxMBConv_iconv( const char* 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;
-IC_CharSet::IC_CharSet(const wxChar *name)
+wxMBConv_iconv::wxMBConv_iconv(const char *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;
// 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
+
+ wxLogTrace(TRACE_STRCONV, _T(" trying charset \"%s\""),
+ nameXE.c_str());
- if (m2w != (iconv_t)-1)
+ m2w = iconv_open(nameXE.ToAscii(), name);
+ 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(), name);
+
+ // 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];
+ size_t insz, outsz;
+ size_t res;
+
+ buf[0] = 'A';
+ buf[1] = 0;
+ wbuf[0] = 0;
+ insz = 2;
+ outsz = SIZEOF_WCHAR_T * 2;
+ char* wbufPtr = (char*)wbuf;
+ bufPtr = buf;
+
+ res = iconv(
+ m2w, ICONV_CHAR_CAST(&bufPtr), &insz,
+ &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 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(
+ 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() ? wxString("<none>")
+ : ms_wcCharsetName,
+ ms_wcNeedsSwap ? _T(" (needs swap)")
+ : _T(""));
}
else // we already have ms_wcCharsetName
{
- m2w = iconv_open(ms_wcCharsetName, cname);
+ m2w = iconv_open(ms_wcCharsetName.ToAscii(), name);
}
- // 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(name, ms_wcCharsetName.ToAscii());
+ if ( w2m == ICONV_T_INVALID )
+ {
+ wxLogTrace(TRACE_STRCONV,
+ wxT("\"%s\" -> \"%s\" works but not the converse!?"),
+ ms_wcCharsetName.c_str(), name);
+ }
}
}
-IC_CharSet::~IC_CharSet()
+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 IC_CharSet::MB2WC(wchar_t *buf, const char *psz, size_t n)
+size_t
+wxMBConv_iconv::ToWChar(wchar_t *dst, size_t dstLen,
+ const char *src, size_t srcLen) const
{
- size_t inbuf = strlen(psz);
- size_t outbuf = n * SIZEOF_WCHAR_T;
+ if ( srcLen == wxNO_LEN )
+ {
+ // find the string length: notice that must be done differently for
+ // NUL-terminated strings and UTF-16/32 which are terminated with 2/4
+ // consecutive NULs
+ const size_t nulLen = GetMBNulLen();
+ switch ( nulLen )
+ {
+ default:
+ return wxCONV_FAILED;
+
+ case 1:
+ srcLen = strlen(src); // 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 = src; NotAllNULs(p, nulLen); p += nulLen )
+ ;
+ srcLen = p - src;
+ break;
+ }
+
+ // when we're determining the length of the string ourselves we count
+ // the terminating NUL(s) as part of it and always NUL-terminate the
+ // output
+ srcLen += nulLen;
+ }
+
+ // we express length in the number of (wide) characters but iconv always
+ // counts buffer sizes it in bytes
+ dstLen *= SIZEOF_WCHAR_T;
+
+#if wxUSE_THREADS
+ // 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 // wxUSE_THREADS
+
size_t res, cres;
- // VS: Use these instead of psz, buf because iconv() modifies its arguments:
- wchar_t *bufPtr = buf;
- const char *pszPtr = psz;
+ const char *pszPtr = src;
- if (buf)
+ if ( dst )
{
+ char* bufPtr = (char*)dst;
+
// have destination buffer, convert there
+ size_t dstLenOrig = dstLen;
cres = iconv(m2w,
- ICONV_CHAR_CAST(&pszPtr), &inbuf,
- (char**)&bufPtr, &outbuf);
- res = n - (outbuf / SIZEOF_WCHAR_T);
+ ICONV_CHAR_CAST(&pszPtr), &srcLen,
+ &bufPtr, &dstLen);
+
+ // convert the number of bytes converted as returned by iconv to the
+ // number of (wide) characters converted that we need
+ res = (dstLenOrig - dstLen) / SIZEOF_WCHAR_T;
if (ms_wcNeedsSwap)
{
// convert to native endianness
- WC_BSWAP(buf /* _not_ bufPtr */, res)
+ for ( unsigned i = 0; i < res; i++ )
+ dst[i] = WC_BSWAP(dst[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.
- if (res < n)
- buf[res] = 0;
}
- else
+ else // no destination buffer
{
- // no destination buffer... convert using temp buffer
- // to calculate destination buffer requirement
- wchar_t tbuf[8];
+ // convert using temp buffer to calculate the size of the buffer needed
+ wchar_t tbuf[256];
res = 0;
- do {
- bufPtr = tbuf;
- outbuf = 8*SIZEOF_WCHAR_T;
+
+ do
+ {
+ char* bufPtr = (char*)tbuf;
+ dstLen = 8 * SIZEOF_WCHAR_T;
cres = iconv(m2w,
- ICONV_CHAR_CAST(&pszPtr), &inbuf,
- (char**)&bufPtr, &outbuf );
+ ICONV_CHAR_CAST(&pszPtr), &srcLen,
+ &bufPtr, &dstLen );
- res += 8-(outbuf/SIZEOF_WCHAR_T);
- } while ((cres==(size_t)-1) && (errno==E2BIG));
+ res += 8 - (dstLen / SIZEOF_WCHAR_T);
+ }
+ while ((cres == (size_t)-1) && (errno == E2BIG));
}
- if (ICONV_FAILED(cres, inbuf))
+ if (ICONV_FAILED(cres, srcLen))
{
//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 IC_CharSet::WC2MB(char *buf, const wchar_t *psz, size_t n)
+size_t wxMBConv_iconv::FromWChar(char *dst, size_t dstLen,
+ const wchar_t *src, size_t srcLen) const
{
- size_t inbuf = wxWcslen(psz) * SIZEOF_WCHAR_T;
- size_t outbuf = n;
+#if wxUSE_THREADS
+ // NB: explained in MB2WC
+ wxMutexLocker lock(wxConstCast(this, wxMBConv_iconv)->m_iconvMutex);
+#endif
+
+ if ( srcLen == wxNO_LEN )
+ srcLen = wxWcslen(src) + 1;
+
+ size_t inbuflen = srcLen * SIZEOF_WCHAR_T;
+ size_t outbuflen = dstLen;
size_t res, cres;
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
+ // (doing WC_BSWAP twice on the original buffer won't work, 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(inbuflen);
+ for ( size_t i = 0; i < srcLen; i++ )
+ tmpbuf[i] = WC_BSWAP(src[i]);
+
+ src = tmpbuf;
}
- if (buf)
+ char* inbuf = (char*)src;
+ if ( dst )
{
// have destination buffer, convert there
- cres = iconv( w2m, ICONV_CHAR_CAST(&psz), &inbuf, &buf, &outbuf );
+ cres = iconv(w2m, ICONV_CHAR_CAST(&inbuf), &inbuflen, &dst, &outbuflen);
- 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;
+ res = dstLen - outbuflen;
}
- else
+ else // no destination buffer
{
- // no destination buffer... convert using temp buffer
- // to calculate destination buffer requirement
- char tbuf[16];
+ // convert using temp buffer to calculate the size of the buffer needed
+ char tbuf[256];
res = 0;
- do {
- buf = tbuf; outbuf = 16;
+ do
+ {
+ dst = tbuf;
+ outbuflen = WXSIZEOF(tbuf);
- cres = iconv( w2m, ICONV_CHAR_CAST(&psz), &inbuf, &buf, &outbuf );
+ cres = iconv(w2m, ICONV_CHAR_CAST(&inbuf), &inbuflen, &dst, &outbuflen);
- res += 16 - outbuf;
- } while ((cres==(size_t)-1) && (errno==E2BIG));
+ res += WXSIZEOF(tbuf) - outbuflen;
+ }
+ while ((cres == (size_t)-1) && (errno == E2BIG));
}
if (ms_wcNeedsSwap)
free(tmpbuf);
}
- if (ICONV_FAILED(cres, inbuf))
+ if (ICONV_FAILED(cres, inbuflen))
{
- //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
+
+ const 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;
+}
+
+#if wxUSE_UNICODE_UTF8
+bool wxMBConv_iconv::IsUTF8() const
+{
+ return wxStricmp(m_name, "UTF-8") == 0 ||
+ wxStricmp(m_name, "UTF8") == 0;
+}
+#endif
+
#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);
+#if wxUSE_FONTMAP
+extern WXDLLIMPEXP_BASE long wxCharsetToCodepage(const char *charset);
extern WXDLLIMPEXP_BASE long wxEncodingToCodepage(wxFontEncoding encoding);
+#endif
-class CP_CharSet : public wxCharacterSet
+class wxMBConv_win32 : public wxMBConv
{
public:
- CP_CharSet(const wxChar* name)
+ 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 char* name)
+ {
+ m_CodePage = wxCharsetToCodepage(name);
+ m_minMBCharWidth = 0;
+ }
+
+ wxMBConv_win32(wxFontEncoding encoding)
+ {
+ m_CodePage = wxEncodingToCodepage(encoding);
+ m_minMBCharWidth = 0;
+ }
+#endif // wxUSE_FONTMAP
+
+ 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)
+ // and break the library itself, e.g. wxTextInputStream::NextChar()
+ // wouldn't work if reading an incomplete MB char didn't result in an
+ // error
+ //
+ // 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 )
{
- m_CodePage = wxCharsetToCodepage(name);
+ return wxMBConvUTF8().MB2WC(buf, psz, n);
}
- CP_CharSet(wxFontEncoding encoding)
+ if ( m_CodePage == CP_UTF7 )
{
- m_CodePage = wxEncodingToCodepage(encoding);
+ return wxMBConvUTF7().MB2WC(buf, psz, n);
+ }
+
+ int flags = 0;
+ if ( (m_CodePage < 50000 && m_CodePage != CP_SYMBOL) &&
+ IsAtLeastWin2kSP4() )
+ {
+ flags = MB_ERR_INVALID_CHARS;
}
- size_t MB2WC(wchar_t *buf, const char *psz, size_t n)
- {
const size_t len = ::MultiByteToWideChar
(
m_CodePage, // code page
- 0, // flags (none)
+ flags, // flags: fall on error
psz, // input string
-1, // its length (NUL-terminated)
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 - 1;
+ }
+
+ virtual 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);
+ BOOL *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
+ 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
+ pUsedDef // [out] was it used?
+ );
+
+ if ( !len )
+ {
+ // function totally failed
+ return wxCONV_FAILED;
+ }
+
+ // we did something, check if we really succeeded
+ if ( flags )
+ {
+ // check if the conversion failed, i.e. if any replacements
+ // were done
+ if ( usedDef )
+ return wxCONV_FAILED;
+ }
+ else // we must resort to double tripping...
+ {
+ // first we need to ensure that we really have the MB data: this is
+ // not the case if we're called with NULL buffer, in which case we
+ // need to do the conversion yet again
+ wxCharBuffer bufDef;
+ if ( !buf )
+ {
+ bufDef = wxCharBuffer(len);
+ buf = bufDef.data();
+ if ( !::WideCharToMultiByte(m_CodePage, flags, pwz, -1,
+ buf, len, NULL, NULL) )
+ return wxCONV_FAILED;
+ }
+
+ if ( !n )
+ n = wcslen(pwz);
+ wxWCharBuffer wcBuf(n);
+ if ( MB2WC(wcBuf.data(), buf, n + 1) == 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 wxCONV_FAILED;
+ }
+ }
+
+ // see the comment above for the reason of "len - 1"
+ 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;
+ }
+ }
- // 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;
+ return m_minMBCharWidth;
}
- size_t WC2MB(char *buf, const wchar_t *psz, size_t n)
- {
- 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?
- );
+ virtual wxMBConv *Clone() const { return new wxMBConv_win32(*this); }
+
+ 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 wxOS_WINDOWS_9X:
+ s_isWin98Or2k = verMaj >= 4 && verMin >= 10;
+ break;
+
+ case wxOS_WINDOWS_NT:
+ s_isWin98Or2k = verMaj >= 5;
+ break;
+
+ default:
+ // unknown: be conservative by default
+ s_isWin98Or2k = 0;
+ break;
+ }
+
+ wxASSERT_MSG( s_isWin98Or2k != -1, _T("should be set above") );
+ }
+
+ 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;
+ }
- // see the comment above!
- return len ? (buf ? len : len - 1) : (size_t)-1;
+ return s_isAtLeastWin2kSP4 == 1;
+#endif
}
- bool usable() const
- { return m_CodePage != -1; }
-public:
+ // 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 // defined(__WIN32__) && !defined(__WXMICROWIN__) && !defined(__WXUNIVERSAL__)
+
+#endif // wxHAVE_WIN32_MB2WC
+
// ============================================================================
// wxEncodingConverter based conversion classes
#if wxUSE_FONTMAP
-class EC_CharSet : public wxCharacterSet
+class wxMBConv_wxwin : public wxMBConv
{
private:
void Init()
{
- m_ok = m2w.Init(m_enc, wxFONTENCODING_UNICODE) &&
+ // Refuse to use broken wxEncodingConverter code for Mac-specific encodings.
+ // The wxMBConv_cf class does a better job.
+ m_ok = (m_enc < wxFONTENCODING_MACMIN || m_enc > wxFONTENCODING_MACMAX) &&
+ m2w.Init(m_enc, wxFONTENCODING_UNICODE) &&
w2m.Init(wxFONTENCODING_UNICODE, m_enc);
}
public:
// temporarily just use wxEncodingConverter stuff,
// so that it works while a better implementation is built
- EC_CharSet(const wxChar* name)
+ wxMBConv_wxwin(const char* name)
{
if (name)
- m_enc = wxFontMapper::Get()->CharsetToEncoding(name, FALSE);
+ m_enc = wxFontMapperBase::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)
- m2w.Convert(psz,buf);
+ {
+ if (!m2w.Convert(psz, buf))
+ return wxCONV_FAILED;
+ }
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)
- w2m.Convert(psz,buf);
+ {
+ if (!w2m.Convert(psz, buf))
+ return wxCONV_FAILED;
+ }
return inbuf;
}
- bool usable() const { return m_ok; }
+ 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(EC_CharSet)
+ wxDECLARE_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)
+// make the constructors available for unit testing
+WXDLLIMPEXP_BASE wxMBConv* new_wxMBConv_wxwin( const char* name )
{
- // 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
+ wxMBConv_wxwin* result = new wxMBConv_wxwin( name );
+ if ( !result->IsOk() )
{
- if ( cset->usable() )
- return cset;
-
- delete cset;
- cset = NULL;
+ delete result;
+ return 0;
}
-#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;
+ return result;
+}
- 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)
+wxCSConv::wxCSConv(const wxString& charset)
{
Init();
- m_encoding = wxFONTENCODING_DEFAULT;
- SetName(charset);
+ if ( !charset.empty() )
+ {
+ SetName(charset.ToAscii());
+ }
+
+#if wxUSE_FONTMAP
+ m_encoding = wxFontMapperBase::GetEncodingFromName(charset);
+ if ( m_encoding == wxFONTENCODING_MAX )
+ {
+ // set to unknown/invalid value
+ m_encoding = wxFONTENCODING_SYSTEM;
+ }
+ else if ( m_encoding == wxFONTENCODING_DEFAULT )
+ {
+ // wxFONTENCODING_DEFAULT is same as US-ASCII in this context
+ m_encoding = wxFONTENCODING_ISO8859_1;
+ }
+#else
+ m_encoding = wxFONTENCODING_SYSTEM;
+#endif
}
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;
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)
+void wxCSConv::SetName(const char *charset)
{
if (charset)
{
m_name = wxStrdup(charset);
- m_deferred = TRUE;
+ m_deferred = true;
}
}
-void wxCSConv::LoadNow()
+#if wxUSE_FONTMAP
+
+WX_DECLARE_HASH_MAP( wxFontEncoding, wxString, wxIntegerHash, wxIntegerEqual,
+ wxEncodingNameCache );
+
+static wxEncodingNameCache gs_nameCache;
+#endif
+
+wxMBConv *wxCSConv::DoCreate() const
{
- if ( m_deferred )
+#if wxUSE_FONTMAP
+ wxLogTrace(TRACE_STRCONV,
+ wxT("creating conversion for %s"),
+ (m_name ? m_name
+ : (const char*)wxFontMapperBase::GetEncodingName(m_encoding).mb_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 ||
+ m_encoding == wxFONTENCODING_DEFAULT )
{
- // it would probably be better to make GetSystemEncodingName() always
- // available (i.e. even when wxUSE_INTL == 0)?
-#if wxUSE_INTL
- if ( !m_name && m_encoding == wxFONTENCODING_DEFAULT )
+ // 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
+ {
+#if wxUSE_FONTMAP
+ wxFontEncoding encoding(m_encoding);
+#endif
+
+ if ( m_name )
{
- wxString name = wxLocale::GetSystemEncodingName();
- if ( !name.empty() )
+ wxMBConv_iconv *conv = new wxMBConv_iconv(m_name);
+ if ( conv->IsOk() )
+ return conv;
+
+ delete conv;
+
+#if wxUSE_FONTMAP
+ encoding =
+ wxFontMapperBase::Get()->CharsetToEncoding(m_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(it->second.ToAscii());
+ if ( conv->IsOk() )
+ return 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 )
{
- SetName(name);
+ for ( ; *names; ++names )
+ {
+ // FIXME-UTF8: wxFontMapperBase::GetAllEncodingNames()
+ // will need changes that will obsolete this
+ wxString name(*names);
+ wxMBConv_iconv *conv = new wxMBConv_iconv(name.ToAscii());
+ if ( conv->IsOk() )
+ {
+ gs_nameCache[encoding] = *names;
+ return conv;
+ }
+
+ delete conv;
+ }
+
+ gs_nameCache[encoding] = _T(""); // cache the failure
}
}
+#endif // wxUSE_FONTMAP
+ }
+#endif // HAVE_ICONV
+
+#ifdef wxHAVE_WIN32_MB2WC
+ {
+#if wxUSE_FONTMAP
+ wxMBConv_win32 *conv = m_name ? new wxMBConv_win32(m_name)
+ : new wxMBConv_win32(m_encoding);
+ if ( conv->IsOk() )
+ return conv;
+
+ delete conv;
+#else
+ return NULL;
+#endif
+ }
+#endif // wxHAVE_WIN32_MB2WC
+
+#ifdef __DARWIN__
+ {
+ // 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_cf *conv = m_name ? new wxMBConv_cf(m_name)
+ : new wxMBConv_cf(m_encoding);
+#else
+ wxMBConv_cf *conv = new wxMBConv_cf(m_encoding);
+#endif
+
+ if ( conv->IsOk() )
+ return conv;
+
+ delete conv;
+ }
+ }
+#endif // __DARWIN__
+
+ // 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 = wxFontMapperBase::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
+ break;
+ }
+
+ // 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 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)
+ {
+ alreadyLoggingError = true;
+ wxLogError(_("Cannot convert from the charset '%s'!"),
+ m_name ? m_name
+ :
+#if wxUSE_FONTMAP
+ (const char*)wxFontMapperBase::GetEncodingDescription(m_encoding).ToAscii()
+#else // !wxUSE_FONTMAP
+ (const char*)wxString::Format(_("encoding %i"), m_encoding).ToAscii()
+#endif // wxUSE_FONTMAP/!wxUSE_FONTMAP
+ );
+
+ alreadyLoggingError = false;
+ }
+
+ return NULL;
+}
+
+void wxCSConv::CreateConvIfNeeded() const
+{
+ if ( m_deferred )
+ {
+ wxCSConv *self = (wxCSConv *)this; // const_cast
+
+ // 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_encoding = wxLocale::GetSystemEncoding();
+#else
+ // fallback to some reasonable default:
+ self->m_encoding = wxFONTENCODING_ISO8859_1;
#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
+bool wxCSConv::IsOk() const
+{
+ CreateConvIfNeeded();
+
+ // special case: no convReal created for wxFONTENCODING_ISO8859_1
+ if ( m_encoding == wxFONTENCODING_ISO8859_1 )
+ return true; // always ok as we do it ourselves
+
+ // m_convReal->IsOk() is called at its own creation, so we know it must
+ // be ok if m_convReal is non-NULL
+ return m_convReal != NULL;
+}
+
+size_t wxCSConv::ToWChar(wchar_t *dst, size_t dstLen,
+ const char *src, size_t srcLen) const
{
- ((wxCSConv *)this)->LoadNow(); // discard constness
+ CreateConvIfNeeded();
- if (m_cset)
- return m_cset->MB2WC(buf, psz, n);
+ if (m_convReal)
+ return m_convReal->ToWChar(dst, dstLen, src, srcLen);
// latin-1 (direct)
- size_t len = strlen(psz);
+ if ( srcLen == wxNO_LEN )
+ srcLen = strlen(src) + 1; // take trailing NUL too
- if (buf)
+ if ( dst )
{
- for (size_t c = 0; c <= len; c++)
- buf[c] = (unsigned char)(psz[c]);
+ if ( dstLen < srcLen )
+ return wxCONV_FAILED;
+
+ for ( size_t n = 0; n < srcLen; n++ )
+ dst[n] = (unsigned char)(src[n]);
}
- return len;
+ return srcLen;
}
-size_t wxCSConv::WC2MB(char *buf, const wchar_t *psz, size_t n) const
+size_t wxCSConv::FromWChar(char *dst, size_t dstLen,
+ const wchar_t *src, size_t srcLen) const
{
- ((wxCSConv *)this)->LoadNow(); // discard constness
+ CreateConvIfNeeded();
- if (m_cset)
- return m_cset->WC2MB(buf, psz, n);
+ if (m_convReal)
+ return m_convReal->FromWChar(dst, dstLen, src, srcLen);
// latin-1 (direct)
- const size_t len = wxWcslen(psz);
- if (buf)
+ if ( srcLen == wxNO_LEN )
+ srcLen = wxWcslen(src) + 1;
+
+ if ( dst )
+ {
+ if ( dstLen < srcLen )
+ return wxCONV_FAILED;
+
+ for ( size_t n = 0; n < srcLen; n++ )
+ {
+ if ( src[n] > 0xFF )
+ return wxCONV_FAILED;
+
+ dst[n] = (char)src[n];
+ }
+
+ }
+ else // still need to check the input validity
+ {
+ for ( size_t n = 0; n < srcLen; n++ )
+ {
+ if ( src[n] > 0xFF )
+ return wxCONV_FAILED;
+ }
+ }
+
+ return srcLen;
+}
+
+size_t wxCSConv::GetMBNulLen() const
+{
+ CreateConvIfNeeded();
+
+ if ( m_convReal )
{
- for (size_t c = 0; c <= len; c++)
- buf[c] = (psz[c] > 0xff) ? '?' : psz[c];
+ return m_convReal->GetMBNulLen();
}
- return len;
+ // otherwise, we are ISO-8859-1
+ return 1;
}
-#endif // wxUSE_WCHAR_T
+#if wxUSE_UNICODE_UTF8
+bool wxCSConv::IsUTF8() const
+{
+ CreateConvIfNeeded();
+
+ if ( m_convReal )
+ {
+ return m_convReal->IsUTF8();
+ }
+
+ // otherwise, we are ISO-8859-1
+ return false;
+}
+#endif
+
+
+#if wxUSE_UNICODE
+
+wxWCharBuffer wxSafeConvertMB2WX(const char *s)
+{
+ if ( !s )
+ return wxWCharBuffer();
+
+ wxWCharBuffer wbuf(wxConvLibc.cMB2WX(s));
+ if ( !wbuf )
+ wbuf = wxMBConvUTF8().cMB2WX(s);
+ if ( !wbuf )
+ wbuf = wxConvISO8859_1.cMB2WX(s);
+
+ return wbuf;
+}
+
+wxCharBuffer wxSafeConvertWX2MB(const wchar_t *ws)
+{
+ if ( !ws )
+ return wxCharBuffer();
+
+ wxCharBuffer buf(wxConvLibc.cWX2MB(ws));
+ if ( !buf )
+ buf = wxMBConvUTF8(wxMBConvUTF8::MAP_INVALID_UTF8_TO_OCTAL).cWX2MB(ws);
+
+ return buf;
+}
+
+#endif // wxUSE_UNICODE
+
+// ----------------------------------------------------------------------------
+// globals
+// ----------------------------------------------------------------------------
+
+// NB: The reason why we create converted objects in this convoluted way,
+// using a factory function instead of global variable, is that they
+// may be used at static initialization time (some of them are used by
+// wxString ctors and there may be a global wxString object). In other
+// words, possibly _before_ the converter global object would be
+// initialized.
+
+#undef wxConvLibc
+#undef wxConvUTF8
+#undef wxConvUTF7
+#undef wxConvLocal
+#undef wxConvISO8859_1
+
+#define WX_DEFINE_GLOBAL_CONV2(klass, impl_klass, name, ctor_args) \
+ WXDLLIMPEXP_DATA_BASE(klass*) name##Ptr = NULL; \
+ WXDLLIMPEXP_BASE klass* wxGet_##name##Ptr() \
+ { \
+ static impl_klass name##Obj ctor_args; \
+ return &name##Obj; \
+ } \
+ /* this ensures that all global converter objects are created */ \
+ /* by the time static initialization is done, i.e. before any */ \
+ /* thread is launched: */ \
+ static klass* gs_##name##instance = wxGet_##name##Ptr()
+
+#define WX_DEFINE_GLOBAL_CONV(klass, name, ctor_args) \
+ WX_DEFINE_GLOBAL_CONV2(klass, klass, name, ctor_args)
+
+#ifdef __INTELC__
+ // disable warning "variable 'xxx' was declared but never referenced"
+ #pragma warning(disable: 177)
+#endif // Intel C++
+
+#ifdef __WINDOWS__
+ WX_DEFINE_GLOBAL_CONV2(wxMBConv, wxMBConv_win32, wxConvLibc, wxEMPTY_PARAMETER_VALUE);
+#else
+ WX_DEFINE_GLOBAL_CONV2(wxMBConv, wxMBConvLibc, wxConvLibc, wxEMPTY_PARAMETER_VALUE);
+#endif
+
+// NB: we can't use wxEMPTY_PARAMETER_VALUE as final argument here because it's
+// passed to WX_DEFINE_GLOBAL_CONV2 after a macro expansion and so still
+// provokes an error message about "not enough macro parameters"; and we
+// can't use "()" here as the name##Obj declaration would be parsed as a
+// function declaration then, so use a semicolon and live with an extra
+// empty statement (and hope that no compilers warns about this)
+WX_DEFINE_GLOBAL_CONV(wxMBConvStrictUTF8, wxConvUTF8, ;);
+WX_DEFINE_GLOBAL_CONV(wxMBConvUTF7, wxConvUTF7, ;);
+
+WX_DEFINE_GLOBAL_CONV(wxCSConv, wxConvLocal, (wxFONTENCODING_SYSTEM));
+WX_DEFINE_GLOBAL_CONV(wxCSConv, wxConvISO8859_1, (wxFONTENCODING_ISO8859_1));
+
+WXDLLIMPEXP_DATA_BASE(wxMBConv *) wxConvCurrent = wxGet_wxConvLibcPtr();
+WXDLLIMPEXP_DATA_BASE(wxMBConv *) wxConvUI = wxGet_wxConvLocalPtr();
+
+#ifdef __DARWIN__
+// The xnu kernel always communicates file paths in decomposed UTF-8.
+// WARNING: Are we sure that CFString's conversion will cause decomposition?
+static wxMBConv_cf wxConvMacUTF8DObj(wxFONTENCODING_UTF8);
+#endif
+
+WXDLLIMPEXP_DATA_BASE(wxMBConv *) wxConvFileName =
+#ifdef __DARWIN__
+ &wxConvMacUTF8DObj;
+#else // !__DARWIN__
+ wxGet_wxConvLibcPtr();
+#endif // __DARWIN__/!__DARWIN__
+
+#else // !wxUSE_WCHAR_T
+// FIXME-UTF8: remove this, wxUSE_WCHAR_T is required now
+// stand-ins in absence of wchar_t
+WXDLLIMPEXP_DATA_BASE(wxMBConv) wxConvLibc,
+ wxConvISO8859_1,
+ wxConvLocal,
+ wxConvUTF8;
+#endif // wxUSE_WCHAR_T/!wxUSE_WCHAR_T
projects / wxWidgets.git / blobdiff