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-rw-r--r--src/fl_utf.c84
1 files changed, 43 insertions, 41 deletions
diff --git a/src/fl_utf.c b/src/fl_utf.c
index 490d46ab0..18355f428 100644
--- a/src/fl_utf.c
+++ b/src/fl_utf.c
@@ -22,7 +22,7 @@
* http://www.fltk.org/str.php
*/
-// Modified to obey rfc3629, which limits unicode to 0-0x10ffff
+/* Modified to obey rfc3629, which limits unicode to 0-0x10ffff */
#include <FL/fl_utf8.h>
#include <string.h>
@@ -41,7 +41,7 @@
\c NULL, only the length of the utf-8 sequence is calculated
\return length of the sequence in bytes
*/
- //FL_EXPORT int fl_unichar_to_utf8(Fl_Unichar uc, char *text);
+ /* FL_EXPORT int fl_unichar_to_utf8(Fl_Unichar uc, char *text); */
/** @} */
@@ -55,10 +55,10 @@
\param[in] uc Unicode character
\return length of the sequence in bytes
*/
- //FL_EXPORT int fl_utf8_size(Fl_Unichar uc);
+ /* FL_EXPORT int fl_utf8_size(Fl_Unichar uc); */
/** @} */
-#endif // 0
+#endif /* 0 */
/* Set to 1 to turn bad UTF8 bytes into ISO-8859-1. If this is to zero
they are instead turned into the Unicode REPLACEMENT CHARACTER, of
@@ -87,8 +87,9 @@
#define STRICT_RFC3629 0
#if ERRORS_TO_CP1252
-// Codes 0x80..0x9f from the Microsoft CP1252 character set, translated
-// to Unicode:
+/* Codes 0x80..0x9f from the Microsoft CP1252 character set, translated
+ * to Unicode:
+ */
static unsigned short cp1252[32] = {
0x20ac, 0x0081, 0x201a, 0x0192, 0x201e, 0x2026, 0x2020, 0x2021,
0x02c6, 0x2030, 0x0160, 0x2039, 0x0152, 0x008d, 0x017d, 0x008f,
@@ -153,11 +154,11 @@ unsigned fl_utf8decode(const char* p, const char* end, int* len)
goto UTF8_3;
#if STRICT_RFC3629
} else if (c == 0xed) {
- // RFC 3629 says surrogate chars are illegal.
+ /* RFC 3629 says surrogate chars are illegal. */
if (((unsigned char*)p)[1] >= 0xa0) goto FAIL;
goto UTF8_3;
} else if (c == 0xef) {
- // 0xfffe and 0xffff are also illegal characters
+ /* 0xfffe and 0xffff are also illegal characters */
if (((unsigned char*)p)[1]==0xbf &&
((unsigned char*)p)[2]>=0xbe) goto FAIL;
goto UTF8_3;
@@ -178,7 +179,7 @@ unsigned fl_utf8decode(const char* p, const char* end, int* len)
if (p+3 >= end || (p[2]&0xc0) != 0x80 || (p[3]&0xc0) != 0x80) goto FAIL;
*len = 4;
#if STRICT_RFC3629
- // RFC 3629 says all codes ending in fffe or ffff are illegal:
+ /* RFC 3629 says all codes ending in fffe or ffff are illegal: */
if ((p[1]&0xf)==0xf &&
((unsigned char*)p)[2] == 0xbf &&
((unsigned char*)p)[3] >= 0xbe) goto FAIL;
@@ -189,7 +190,7 @@ unsigned fl_utf8decode(const char* p, const char* end, int* len)
((p[2] & 0x3f) << 6) +
((p[3] & 0x3f));
} else if (c == 0xf4) {
- if (((unsigned char*)p)[1] > 0x8f) goto FAIL; // after 0x10ffff
+ if (((unsigned char*)p)[1] > 0x8f) goto FAIL; /* after 0x10ffff */
goto UTF8_4;
} else {
FAIL:
@@ -197,7 +198,7 @@ unsigned fl_utf8decode(const char* p, const char* end, int* len)
#if ERRORS_TO_ISO8859_1
return c;
#else
- return 0xfffd; // Unicode REPLACEMENT CHARACTER
+ return 0xfffd; /* Unicode REPLACEMENT CHARACTER */
#endif
}
}
@@ -224,9 +225,9 @@ const char* fl_utf8fwd(const char* p, const char* start, const char* end)
{
const char* a;
int len;
- // if we are not pointing at a continuation character, we are done:
+ /* if we are not pointing at a continuation character, we are done: */
if ((*p&0xc0) != 0x80) return p;
- // search backwards for a 0xc0 starting the character:
+ /* search backwards for a 0xc0 starting the character: */
for (a = p-1; ; --a) {
if (a < start) return p;
if (!(a[0]&0x80)) return p;
@@ -255,9 +256,9 @@ const char* fl_utf8back(const char* p, const char* start, const char* end)
{
const char* a;
int len;
- // if we are not pointing at a continuation character, we are done:
+ /* if we are not pointing at a continuation character, we are done: */
if ((*p&0xc0) != 0x80) return p;
- // search backwards for a 0xc0 starting the character:
+ /* search backwards for a 0xc0 starting the character: */
for (a = p-1; ; --a) {
if (a < start) return p;
if (!(a[0]&0x80)) return p;
@@ -280,7 +281,7 @@ int fl_utf8bytes(unsigned ucs) {
} else if (ucs < 0x10ffffU) {
return 4;
} else {
- return 3; // length of the illegal character encoding
+ return 3; /* length of the illegal character encoding */
}
}
@@ -320,7 +321,7 @@ int fl_utf8encode(unsigned ucs, char* buf) {
buf[3] = 0x80 | (ucs & 0x3F);
return 4;
} else {
- // encode 0xfffd:
+ /* encode 0xfffd: */
buf[0] = 0xefU;
buf[1] = 0xbfU;
buf[2] = 0xbdU;
@@ -367,7 +368,7 @@ unsigned fl_utf8toUtf16(const char* src, unsigned srclen,
unsigned count = 0;
if (dstlen) for (;;) {
if (p >= e) {dst[count] = 0; return count;}
- if (!(*p & 0x80)) { // ascii
+ if (!(*p & 0x80)) { /* ascii */
dst[count] = *p++;
} else {
int len; unsigned ucs = fl_utf8decode(p,e,&len);
@@ -375,7 +376,7 @@ unsigned fl_utf8toUtf16(const char* src, unsigned srclen,
if (ucs < 0x10000) {
dst[count] = ucs;
} else {
- // make a surrogate pair:
+ /* make a surrogate pair: */
if (count+2 >= dstlen) {dst[count] = 0; count += 2; break;}
dst[count] = (((ucs-0x10000u)>>10)&0x3ff) | 0xd800;
dst[++count] = (ucs&0x3ff) | 0xdc00;
@@ -383,7 +384,7 @@ unsigned fl_utf8toUtf16(const char* src, unsigned srclen,
}
if (++count == dstlen) {dst[count-1] = 0; break;}
}
- // we filled dst, measure the rest:
+ /* we filled dst, measure the rest: */
while (p < e) {
if (!(*p & 0x80)) p++;
else {
@@ -410,7 +411,7 @@ unsigned fl_utf8towc(const char* src, unsigned srclen,
unsigned count = 0;
if (dstlen) for (;;) {
if (p >= e) {dst[count] = 0; return count;}
- if (!(*p & 0x80)) { // ascii
+ if (!(*p & 0x80)) { /* ascii */
dst[count] = *p++;
} else {
int len; unsigned ucs = fl_utf8decode(p,e,&len);
@@ -419,7 +420,7 @@ unsigned fl_utf8towc(const char* src, unsigned srclen,
}
if (++count == dstlen) {dst[count-1] = 0; break;}
}
- // we filled dst, measure the rest:
+ /* we filled dst, measure the rest: */
while (p < e) {
if (!(*p & 0x80)) p++;
else {
@@ -462,7 +463,7 @@ unsigned fl_utf8toa(const char* src, unsigned srclen,
unsigned char c;
if (p >= e) {dst[count] = 0; return count;}
c = *(unsigned char*)p;
- if (c < 0xC2) { // ascii or bad code
+ if (c < 0xC2) { /* ascii or bad code */
dst[count] = c;
p++;
} else {
@@ -473,7 +474,7 @@ unsigned fl_utf8toa(const char* src, unsigned srclen,
}
if (++count >= dstlen) {dst[count-1] = 0; break;}
}
- // we filled dst, measure the rest:
+ /* we filled dst, measure the rest: */
while (p < e) {
if (!(*p & 0x80)) p++;
else {
@@ -524,17 +525,17 @@ unsigned fl_utf8fromwc(char* dst, unsigned dstlen,
if (ucs < 0x80U) {
dst[count++] = ucs;
if (count >= dstlen) {dst[count-1] = 0; break;}
- } else if (ucs < 0x800U) { // 2 bytes
+ } else if (ucs < 0x800U) { /* 2 bytes */
if (count+2 >= dstlen) {dst[count] = 0; count += 2; break;}
dst[count++] = 0xc0 | (ucs >> 6);
dst[count++] = 0x80 | (ucs & 0x3F);
#ifdef _WIN32
} else if (ucs >= 0xd800 && ucs <= 0xdbff && i < srclen &&
src[i] >= 0xdc00 && src[i] <= 0xdfff) {
- // surrogate pair
+ /* surrogate pair */
unsigned ucs2 = src[i++];
ucs = 0x10000U + ((ucs&0x3ff)<<10) + (ucs2&0x3ff);
- // all surrogate pairs turn into 4-byte utf8
+ /* all surrogate pairs turn into 4-byte utf8 */
#else
} else if (ucs >= 0x10000) {
if (ucs > 0x10ffff) {
@@ -551,24 +552,24 @@ unsigned fl_utf8fromwc(char* dst, unsigned dstlen,
#ifndef _WIN32
J1:
#endif
- // all others are 3 bytes:
+ /* all others are 3 bytes: */
if (count+3 >= dstlen) {dst[count] = 0; count += 3; break;}
dst[count++] = 0xe0 | (ucs >> 12);
dst[count++] = 0x80 | ((ucs >> 6) & 0x3F);
dst[count++] = 0x80 | (ucs & 0x3F);
}
}
- // we filled dst, measure the rest:
+ /* we filled dst, measure the rest: */
while (i < srclen) {
unsigned ucs = src[i++];
if (ucs < 0x80U) {
count++;
- } else if (ucs < 0x800U) { // 2 bytes
+ } else if (ucs < 0x800U) { /* 2 bytes */
count += 2;
#ifdef _WIN32
} else if (ucs >= 0xd800 && ucs <= 0xdbff && i < srclen-1 &&
src[i+1] >= 0xdc00 && src[i+1] <= 0xdfff) {
- // surrogate pair
+ /* surrogate pair */
++i;
#else
} else if (ucs >= 0x10000 && ucs <= 0x10ffff) {
@@ -613,13 +614,13 @@ unsigned fl_utf8froma(char* dst, unsigned dstlen,
if (ucs < 0x80U) {
dst[count++] = ucs;
if (count >= dstlen) {dst[count-1] = 0; break;}
- } else { // 2 bytes (note that CP1252 translate could make 3 bytes!)
+ } else { /* 2 bytes (note that CP1252 translate could make 3 bytes!) */
if (count+2 >= dstlen) {dst[count] = 0; count += 2; break;}
dst[count++] = 0xc0 | (ucs >> 6);
dst[count++] = 0x80 | (ucs & 0x3F);
}
}
- // we filled dst, measure the rest:
+ /* we filled dst, measure the rest: */
while (p < e) {
unsigned char ucs = *(unsigned char*)p++;
if (ucs < 0x80U) {
@@ -654,7 +655,7 @@ int fl_utf8locale(void) {
ret = GetACP() == CP_UTF8;
#else
char* s;
- ret = 1; // assumme UTF-8 if no locale
+ ret = 1; /* assumme UTF-8 if no locale */
if (((s = getenv("LC_CTYPE")) && *s) ||
((s = getenv("LC_ALL")) && *s) ||
((s = getenv("LANG")) && *s)) {
@@ -696,13 +697,14 @@ unsigned fl_utf8to_mb(const char* src, unsigned srclen,
fl_utf8towc(src, srclen, buf, length+1);
}
if (dstlen) {
- // apparently this does not null-terminate, even though msdn
- // documentation claims it does:
+ /* apparently this does not null-terminate, even though msdn
+ * documentation claims it does:
+ */
ret =
WideCharToMultiByte(GetACP(), 0, buf, length, dst, dstlen, 0, 0);
dst[ret] = 0;
}
- // if it overflows or measuring length, get the actual length:
+ /* if it overflows or measuring length, get the actual length: */
if (dstlen==0 || ret >= dstlen-1)
ret =
WideCharToMultiByte(GetACP(), 0, buf, length, 0, 0, 0, 0);
@@ -725,10 +727,10 @@ unsigned fl_utf8to_mb(const char* src, unsigned srclen,
}
if (buf != lbuf) free((void*)buf);
if (ret >= 0) return (unsigned)ret;
- // on any errors we return the UTF-8 as raw text...
+ /* on any errors we return the UTF-8 as raw text...*/
#endif
}
- // identity transform:
+ /* identity transform: */
if (srclen < dstlen) {
memcpy(dst, src, srclen);
dst[srclen] = 0;
@@ -792,10 +794,10 @@ unsigned fl_utf8from_mb(char* dst, unsigned dstlen,
if (buf != lbuf) free((void*)buf);
return ret;
}
- // errors in conversion return the UTF-8 unchanged
+ /* errors in conversion return the UTF-8 unchanged */
#endif
}
- // identity transform:
+ /* identity transform: */
if (srclen < dstlen) {
memcpy(dst, src, srclen);
dst[srclen] = 0;
generated by cgit v1.2.3 (git 2.25.1) at 2026-02-08 12:54:40 +0000