#ifdef HAVE_ICONV
#include <iconv.h>
+ #include "wx/thread.h"
#endif
#include "wx/encconv.h"
return buf;
}
-size_t wxMBConv::MB2WC(wchar_t* szBuffer, const char* szString,
- size_t outsize, size_t nStringLen) const
+const wxWCharBuffer wxMBConv::cMB2WC(const char *szString, size_t nStringLen, size_t* pOutSize) const
{
+ wxASSERT(pOutSize != NULL);
+
const char* szEnd = szString + nStringLen + 1;
const char* szPos = szString;
const char* szStart = szPos;
size_t nActualLength = 0;
+ size_t nCurrentSize = nStringLen; //try normal size first (should never resize?)
+
+ wxWCharBuffer theBuffer(nCurrentSize);
//Convert the string until the length() is reached, continuing the
//loop every time a null character is reached
//Invalid conversion?
if( nLen == (size_t)-1 )
- return nLen;
+ {
+ *pOutSize = 0;
+ theBuffer.data()[0u] = wxT('\0');
+ return theBuffer;
+ }
+
//Increase the actual length (+1 for current null character)
nActualLength += nLen + 1;
- //Only copy data in if buffer size is big enough
- if (szBuffer != NULL &&
- nActualLength <= outsize)
+ //if buffer too big, realloc the buffer
+ if (nActualLength > (nCurrentSize+1))
{
- //Convert the current (sub)string
- if ( MB2WC(&szBuffer[szPos - szStart], szPos, nLen + 1) == (size_t)-1 )
- return (size_t)-1;
+ wxWCharBuffer theNewBuffer(nCurrentSize << 1);
+ memcpy(theNewBuffer.data(), theBuffer.data(), nCurrentSize * sizeof(wchar_t));
+ theBuffer = theNewBuffer;
+ nCurrentSize <<= 1;
+ }
+
+ //Convert the current (sub)string
+ if ( MB2WC(&theBuffer.data()[szPos - szStart], szPos, nLen + 1) == (size_t)-1 )
+ {
+ *pOutSize = 0;
+ theBuffer.data()[0u] = wxT('\0');
+ return theBuffer;
}
//Increment to next (sub)string
szPos += strlen(szPos) + 1;
}
- return nActualLength - 1; //success - return actual length
+ //success - return actual length and the buffer
+ *pOutSize = nActualLength;
+ return theBuffer;
}
-size_t wxMBConv::WC2MB(char* szBuffer, const wchar_t* szString,
- size_t outsize, size_t nStringLen) const
+const wxCharBuffer wxMBConv::cWC2MB(const wchar_t *szString, size_t nStringLen, size_t* pOutSize) const
{
+ wxASSERT(pOutSize != NULL);
+
const wchar_t* szEnd = szString + nStringLen + 1;
const wchar_t* szPos = szString;
const wchar_t* szStart = szPos;
size_t nActualLength = 0;
+ size_t nCurrentSize = nStringLen << 2; //try * 4 first
+
+ wxCharBuffer theBuffer(nCurrentSize);
//Convert the string until the length() is reached, continuing the
//loop every time a null character is reached
//Invalid conversion?
if( nLen == (size_t)-1 )
- return nLen;
+ {
+ *pOutSize = 0;
+ theBuffer.data()[0u] = wxT('\0');
+ return theBuffer;
+ }
//Increase the actual length (+1 for current null character)
nActualLength += nLen + 1;
- //Only copy data in if buffer size is big enough
- if (szBuffer != NULL &&
- nActualLength <= outsize)
+ //if buffer too big, realloc the buffer
+ if (nActualLength > (nCurrentSize+1))
{
- //Convert the current (sub)string
- if(WC2MB(&szBuffer[szPos - szStart], szPos, nLen + 1) == (size_t)-1 )
- return (size_t)-1;
+ wxCharBuffer theNewBuffer(nCurrentSize << 1);
+ memcpy(theNewBuffer.data(), theBuffer.data(), nCurrentSize);
+ theBuffer = theNewBuffer;
+ nCurrentSize <<= 1;
+ }
+
+ //Convert the current (sub)string
+ if(WC2MB(&theBuffer.data()[szPos - szStart], szPos, nLen + 1) == (size_t)-1 )
+ {
+ *pOutSize = 0;
+ theBuffer.data()[0u] = wxT('\0');
+ return theBuffer;
}
//Increment to next (sub)string
szPos += wxWcslen(szPos) + 1;
}
- return nActualLength - 1; //success - return actual length
+ //success - return actual length and the buffer
+ *pOutSize = nActualLength;
+ return theBuffer;
}
// ----------------------------------------------------------------------------
d += cc;
for (l += 6; l >= 8; lsb = !lsb)
{
- c = (d >> (l -= 8)) % 256;
+ c = (unsigned char)((d >> (l -= 8)) % 256);
if (lsb)
{
if (buf)
}
else
if (buf)
- *buf = c << 8;
+ *buf = (wchar_t)(c << 8);
}
}
if (*psz == '-')
len++;
}
#ifndef WC_UTF16
-#ifdef __VMS
- else if (cc > 0xffff)
-#else
- else if (cc > ((const wchar_t)0xffff))
-#endif
- {
+ else if (((wxUint32)cc) > 0xffff)
+ {
// no surrogate pair generation (yet?)
return (size_t)-1;
}
#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) && \
// 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
size_t wxMBConv_iconv::MB2WC(wchar_t *buf, const char *psz, size_t n) const
{
+#if wxUSE_THREADS
+ // NB: iconv() is MT-safe, but each thread must use it's own iconv_t handle.
+ // Unfortunately there is a couple of global wxCSConv objects such as
+ // 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
+
size_t inbuf = strlen(psz);
size_t outbuf = n * SIZEOF_WCHAR_T;
size_t res, cres;
size_t wxMBConv_iconv::WC2MB(char *buf, const wchar_t *psz, size_t n) const
{
+#if wxUSE_THREADS
+ // NB: explained in MB2WC
+ wxMutexLocker lock(wxConstCast(this, wxMBConv_iconv)->m_iconvMutex);
+#endif
+
size_t inbuf = wxWcslen(psz) * SIZEOF_WCHAR_T;
size_t outbuf = n;
size_t res, cres;
{
size_t inbuf = strlen(psz);
if (buf)
- m2w.Convert(psz,buf);
+ {
+ if (!m2w.Convert(psz,buf))
+ return (size_t)-1;
+ }
return inbuf;
}
{
const size_t inbuf = wxWcslen(psz);
if (buf)
- w2m.Convert(psz,buf);
+ {
+ if (!w2m.Convert(psz,buf))
+ return (size_t)-1;
+ }
return inbuf;
}
projects / wxWidgets.git / blobdiff