#include "wx/fontmap.h"
#ifdef __DARWIN__
-#include "wx/mac/corefoundation/private/strconv_cf.h"
+#include "wx/osx/core/private/strconv_cf.h"
#endif //def __DARWIN__
// ----------------------------------------------------------------------------
// Implementation (C) 2004 Fredrik Roubert
+//
+// Changes to work in streaming mode (C) 2008 Vadim Zeitlin
//
// BASE64 decoding table
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
};
-size_t wxMBConvUTF7::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
{
+ DecoderState stateOrig,
+ *statePtr;
+ if ( srcLen == wxNO_LEN )
+ {
+ // convert the entire string, up to and including the trailing NUL
+ srcLen = strlen(src) + 1;
+
+ // 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
+ {
+ statePtr = wx_const_cast(DecoderState *, &m_stateDecoder);
+
+ // also save the old state to be able to rollback to it on error
+ stateOrig = m_stateDecoder;
+ }
+
+ // but to simplify the code below we use this variable in both cases
+ DecoderState& state = *statePtr;
+
+
+ // 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)) )
{
- unsigned char cc = *psz++;
- if (cc != '+')
- {
- // plain ASCII char
- if (buf)
- *buf++ = cc;
- len++;
- }
- else if (*psz == '-')
- {
- // encoded plus sign
- if (buf)
- *buf++ = cc;
- len++;
- psz++;
- }
- else // start of BASE64 encoded string
+ const unsigned char cc = *src++;
+
+ if ( state.IsShifted() )
{
- bool lsb, ok;
- unsigned int d, l;
- for ( ok = lsb = false, d = 0, l = 0;
- (cc = utf7unb64[(unsigned char)*psz]) != 0xff;
- psz++ )
+ const unsigned char dc = utf7unb64[cc];
+ if ( dc == 0xff )
+ {
+ // end of encoded part
+ state.ToDirect();
+
+ // re-parse this character normally below unless it's '-' which
+ // is consumed by the decoder
+ if ( cc == '-' )
+ continue;
+ }
+ else // valid encoded character
{
- d <<= 6;
- d += cc;
- for (l += 6; l >= 8; lsb = !lsb)
+ // mini base64 decoder: each character is 6 bits
+ state.bit += 6;
+ state.accum <<= 6;
+ state.accum += dc;
+
+ if ( state.bit >= 8 )
{
- unsigned char c = (unsigned char)((d >> (l -= 8)) % 256);
- if (lsb)
+ // got the full byte, consume it
+ state.bit -= 8;
+ unsigned char b = (state.accum >> state.bit) & 0x00ff;
+
+ if ( state.isLSB )
{
- if (buf)
- *buf++ |= c;
- len ++;
- ok = true;
+ // we've got the full word, output it
+ if ( dst )
+ *dst++ = (state.msb << 8) | b;
+ len++;
+ state.isLSB = false;
}
- else
+ else // MSB
{
- if (buf)
- *buf = (wchar_t)(c << 8);
+ // just store it while we wait for LSB
+ state.msb = b;
+ state.isLSB = true;
}
}
}
+ }
- if ( !ok )
+ if ( state.IsDirect() )
+ {
+ // start of an encoded segment?
+ if ( cc == '+' )
{
- // in valid UTF7 we should have valid characters after '+'
- return wxCONV_FAILED;
+ if ( src == srcEnd )
+ return wxCONV_FAILED; // can't have '+' at the end
+
+ if ( *src == '-' )
+ {
+ // just the encoded plus sign, don't switch to shifted mode
+ if ( dst )
+ *dst++ = '+';
+ len++;
+ src++;
+ }
+ else
+ {
+ 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 (*psz == '-')
- psz++;
+ if ( dst )
+ *dst++ = cc;
+ len++;
+ }
}
}
- if ( buf && (len < n) )
- *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;
}
//
static const unsigned char utf7encode[128] =
{
- 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 3, 3, 2, 3, 3,
+ 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,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 3, 3
};
-size_t wxMBConvUTF7::WC2MB(char *buf, const wchar_t *psz, size_t n) const
+static inline bool wxIsUTF7Direct(wchar_t wc)
+{
+ return wc < 0x80 && utf7encode[wc] < 1;
+}
+
+size_t wxMBConvUTF7::FromWChar(char *dst, size_t dstLen,
+ const wchar_t *src, size_t srcLen) const
{
+ EncoderState stateOrig,
+ *statePtr;
+ if ( srcLen == wxNO_LEN )
+ {
+ // 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 = wx_const_cast(EncoderState *, &m_stateEncoder);
+ }
+
+ EncoderState& state = *statePtr;
+
+
size_t len = 0;
- while (*psz && ((!buf) || (len < n)))
+ const wchar_t * const srcEnd = src + srcLen;
+ while ( src < srcEnd && (!dst || len < dstLen) )
{
- wchar_t cc = *psz++;
- if (cc < 0x80 && utf7encode[cc] < 1)
+ wchar_t cc = *src++;
+ if ( wxIsUTF7Direct(cc) )
{
- // plain ASCII char
- if (buf)
- *buf++ = (char)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)
{
#endif
else
{
- if (buf)
- *buf++ = '+';
+ if ( state.IsDirect() )
+ {
+ state.ToShifted();
- len++;
- if (cc != '+')
+ if ( dst )
+ *dst++ = '+';
+ len++;
+ }
+
+ // BASE64 encode string
+ for ( ;; )
{
- // BASE64 encode string
- unsigned int lsb, d, l;
- for (d = 0, l = 0; /*nothing*/; psz++)
+ for ( unsigned lsb = 0; lsb < 2; lsb++ )
{
- for (lsb = 0; lsb < 2; lsb ++)
- {
- d <<= 8;
- d += lsb ? cc & 0xff : (cc & 0xff00) >> 8;
+ state.accum <<= 8;
+ state.accum += lsb ? cc & 0xff : (cc & 0xff00) >> 8;
- for (l += 8; l >= 6; )
- {
- l -= 6;
- if (buf)
- *buf++ = utf7enb64[(d >> l) % 64];
- len++;
- }
+ for (state.bit += 8; state.bit >= 6; )
+ {
+ state.bit -= 6;
+ if ( dst )
+ *dst++ = utf7enb64[(state.accum >> state.bit) % 64];
+ len++;
}
-
- cc = *psz;
- if (!(cc) || (cc < 0x80 && utf7encode[cc] < 1))
- break;
}
- if (l != 0)
- {
- if (buf)
- *buf++ = utf7enb64[((d % 16) << (6 - l)) % 64];
+ if ( src == srcEnd || wxIsUTF7Direct(cc = *src) )
+ break;
- len++;
- }
+ src++;
}
-
- if (buf)
- *buf++ = '-';
- len++;
}
}
- 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;
}
for ( const wchar_t *wp = src; ; wp++ )
{
- if ( !(srcLen == wxNO_LEN ? *wp : srcLen--) )
+ if ( !(srcLen == wxNO_LEN ? *wp : srcLen) )
{
// all done successfully, just add the trailing NULL if we are not
// using explicit length
return written;
}
+ if ( srcLen != wxNO_LEN )
+ srcLen--;
wxUint32 code;
#ifdef WC_UTF16
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
char* bufPtr = (char*)dst;
// have destination buffer, convert there
+ size_t dstLenOrig = dstLen;
cres = iconv(m2w,
ICONV_CHAR_CAST(&pszPtr), &srcLen,
&bufPtr, &dstLen);
- res = dstLen - (dstLen / SIZEOF_WCHAR_T);
+
+ // 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)
{
for ( unsigned i = 0; i < res; i++ )
dst[i] = WC_BSWAP(dst[i]);
}
-
- // NUL-terminate the string if there is any space left
- if (res < dstLen)
- dst[res] = 0;
}
else // no destination buffer
{
#endif
if ( srcLen == wxNO_LEN )
- srcLen = wxWcslen(src);
+ srcLen = wxWcslen(src) + 1;
size_t inbuflen = srcLen * SIZEOF_WCHAR_T;
size_t outbuflen = dstLen;
cres = iconv(w2m, ICONV_CHAR_CAST(&inbuf), &inbuflen, &dst, &outbuflen);
res = dstLen - outbuflen;
-
- // NB: iconv was given only wcslen(src) 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 < dstLen)
- dst[0] = 0;
}
else // no destination buffer
{
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