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Fix to take care of Cygwin that uses UTF-16 as well as native Windows, 

i.e. sizeof(wchar_t) = 2, and Unicode is UTF-16 with surrogate pairs.


git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@8214 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
This commit is contained in:
Albrecht Schlosser 2011-01-07 17:23:02 +00:00
parent 63e77dfe56
commit 45745509f0
1 changed files with 14 additions and 8 deletions
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22
src/fl_utf.c
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@ -410,19 +410,25 @@ unsigned fl_utf8toUtf16(const char* src, unsigned srclen,
Converts a UTF-8 string into a wide character string.
This function generates 32-bit wchar_t (e.g. "ucs4" as it were) except
on win32 where it returns Utf16 with surrogate pairs where required.
on Windows where it returns UTF-16 with surrogate pairs where required.
Note that Windows includes Cygwin, i.e. compiled with Cygwin's POSIX
layer (cygwin1.dll, --enable-cygwin), either native (GDI) or X11.
*/
unsigned fl_utf8towc(const char* src, unsigned srclen,
wchar_t* dst, unsigned dstlen)
{
#ifdef WIN32
return fl_utf8toUtf16(src, srclen, (unsigned short*)dst, dstlen);
#if defined(WIN32) || defined(__CYGWIN__)
return fl_utf8toUtf16(src, srclen, (unsigned short*)dst, dstlen);
#else
const char* p = src;
const char* e = src+srclen;
unsigned count = 0;
if (dstlen) for (;;) {
if (p >= e) {dst[count] = 0; return count;}
if (p >= e) {
dst[count] = 0;
return count;
}
if (!(*p & 0x80)) { /* ascii */
dst[count] = *p++;
} else {
@ -511,7 +517,7 @@ unsigned fl_utf8toa(const char* src, unsigned srclen,
needed.
\p srclen is the number of words in \p src to convert. On Windows
this is not necessairly the number of characters, due to there
this is not necessarily the number of characters, due to there
possibly being "surrogate pairs" in the UTF-16 encoding used.
On Unix wchar_t is 32 bits and each location is a character.
@ -541,7 +547,7 @@ unsigned fl_utf8fromwc(char* dst, unsigned dstlen,
if (count+2 >= dstlen) {dst[count] = 0; count += 2; break;}
dst[count++] = 0xc0 | (ucs >> 6);
dst[count++] = 0x80 | (ucs & 0x3F);
#ifdef WIN32
#if defined(WIN32) || defined(__CYGWIN__)
} else if (ucs >= 0xd800 && ucs <= 0xdbff && i < srclen &&
src[i] >= 0xdc00 && src[i] <= 0xdfff) {
/* surrogate pair */
@ -561,7 +567,7 @@ unsigned fl_utf8fromwc(char* dst, unsigned dstlen,
dst[count++] = 0x80 | ((ucs >> 6) & 0x3F);
dst[count++] = 0x80 | (ucs & 0x3F);
} else {
#ifndef WIN32
#if !(defined(WIN32) || defined(__CYGWIN__))
J1:
#endif
/* all others are 3 bytes: */
@ -578,7 +584,7 @@ unsigned fl_utf8fromwc(char* dst, unsigned dstlen,
count++;
} else if (ucs < 0x800U) { /* 2 bytes */
count += 2;
#ifdef WIN32
#if defined(WIN32) || defined(__CYGWIN__)
} else if (ucs >= 0xd800 && ucs <= 0xdbff && i < srclen-1 &&
src[i+1] >= 0xdc00 && src[i+1] <= 0xdfff) {
/* surrogate pair */