dcb0ae4ed8
o use braces to avoid potentially ambiguous else o don't default to type int (and also remove a useless register modifier). o Use parens around assignment values used as truth values. o Remove unused function. Reviewed by: obrien and chuckr
151 lines
4.1 KiB
C
151 lines
4.1 KiB
C
/*-
|
|
* Copyright (c) 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* Paul Borman at Krystal Technologies.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifdef XPG4
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
static char sccsid[] = "@(#)utf2.c 8.1 (Berkeley) 6/4/93";
|
|
#endif /* LIBC_SCCS and not lint */
|
|
|
|
#include <errno.h>
|
|
#include <rune.h>
|
|
#include <stddef.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
rune_t _UTF2_sgetrune __P((const char *, size_t, char const **));
|
|
int _UTF2_sputrune __P((rune_t, char *, size_t, char **));
|
|
|
|
static int _utf_count[16] = {
|
|
1, 1, 1, 1, 1, 1, 1, 1,
|
|
0, 0, 0, 0, 2, 2, 3, 0,
|
|
};
|
|
|
|
int
|
|
_UTF2_init(rl)
|
|
_RuneLocale *rl;
|
|
{
|
|
rl->sgetrune = _UTF2_sgetrune;
|
|
rl->sputrune = _UTF2_sputrune;
|
|
_CurrentRuneLocale = rl;
|
|
__mb_cur_max = 3;
|
|
return (0);
|
|
}
|
|
|
|
rune_t
|
|
_UTF2_sgetrune(string, n, result)
|
|
const char *string;
|
|
size_t n;
|
|
char const **result;
|
|
{
|
|
int c;
|
|
|
|
if (n < 1 || (c = _utf_count[(*string >> 4) & 0xf]) > n) {
|
|
if (result)
|
|
*result = string;
|
|
return (_INVALID_RUNE);
|
|
}
|
|
switch (c) {
|
|
case 1:
|
|
if (result)
|
|
*result = string + 1;
|
|
return (*string & 0xff);
|
|
case 2:
|
|
if ((string[1] & 0xC0) != 0x80)
|
|
goto encoding_error;
|
|
if (result)
|
|
*result = string + 2;
|
|
return (((string[0] & 0x1F) << 6) | (string[1] & 0x3F));
|
|
case 3:
|
|
if ((string[1] & 0xC0) != 0x80 || (string[2] & 0xC0) != 0x80)
|
|
goto encoding_error;
|
|
if (result)
|
|
*result = string + 3;
|
|
return (((string[0] & 0x1F) << 12) | ((string[1] & 0x3F) << 6)
|
|
| (string[2] & 0x3F));
|
|
default:
|
|
encoding_error: if (result)
|
|
*result = string + 1;
|
|
return (_INVALID_RUNE);
|
|
}
|
|
}
|
|
|
|
int
|
|
_UTF2_sputrune(c, string, n, result)
|
|
rune_t c;
|
|
char *string, **result;
|
|
size_t n;
|
|
{
|
|
if (c & 0xF800) {
|
|
if (n >= 3) {
|
|
if (string) {
|
|
string[0] = 0xE0 | ((c >> 12) & 0x0F);
|
|
string[1] = 0x80 | ((c >> 6) & 0x3F);
|
|
string[2] = 0x80 | ((c) & 0x3F);
|
|
}
|
|
if (result)
|
|
*result = string + 3;
|
|
} else
|
|
if (result)
|
|
*result = NULL;
|
|
|
|
return (3);
|
|
} else
|
|
if (c & 0x0780) {
|
|
if (n >= 2) {
|
|
if (string) {
|
|
string[0] = 0xC0 | ((c >> 6) & 0x1F);
|
|
string[1] = 0x80 | ((c) & 0x3F);
|
|
}
|
|
if (result)
|
|
*result = string + 2;
|
|
} else
|
|
if (result)
|
|
*result = NULL;
|
|
return (2);
|
|
} else {
|
|
if (n >= 1) {
|
|
if (string)
|
|
string[0] = c;
|
|
if (result)
|
|
*result = string + 1;
|
|
} else
|
|
if (result)
|
|
*result = NULL;
|
|
return (1);
|
|
}
|
|
}
|
|
#endif /* XPG4 */
|