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/*
* SPL - The SPL Programming Language
* Copyright (C) 2004, 2005 Clifford Wolf <clifford@clifford.at>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* compat.h: Some defines and inlines for non-gnu systems
*
*/
#ifndef SPL_COMPAT_H
#define SPL_COMPAT_H
#include <stdlib.h>
#define UNUSED __attribute__((unused))
#define my_strndupa(s, n) \
({ \
char *__new = (char *) __builtin_alloca ((n) + 1); \
strncpy(__new, (s), (n)); \
__new[(n)] = '\0'; __new; \
})
#define my_strndup(s, n) \
({ \
char *__new = (char *) malloc ((n) + 1); \
strncpy(__new, (s), (n)); \
__new[(n)] = '\0'; __new; \
})
#define my_alloca(_s) __builtin_alloca(_s)
static inline void *my_memrchr(const void *s, int c, size_t n)
{
const char *sx = s;
for (int counter = n; counter >= 0; counter--)
if (sx[counter] == c) return (void*)(sx+counter);
return 0;
}
static inline void *my_memmem(const void *haystack, size_t haystacklen,
const void *needle, size_t needlelen)
{
if (needlelen <= haystacklen) {
for (unsigned int i=0; i <= haystacklen-needlelen; i++)
if (!memcmp(haystack+i, needle, needlelen))
return (void*)(haystack+i);
}
return 0;
}
static inline char *my_strsep(char **s, const char *ct)
{
char *begin = *s, *end = *s;
if (!begin)
return 0;
while (*end && !strchr(ct, *end))
end++;
if (*end) {
*end = 0;
*s = end+1;
} else
*s = 0;
return begin;
}
#if USEWIN32API
#ifndef COMPAT_H_NO_WIN_INCL
# include <stdarg.h>
# include <windef.h>
# include <winbase.h>
#endif
# define MY_O_BINARY O_BINARY
# define my_sleep(sec) Sleep((sec)*1000)
#else
# define MY_O_BINARY 0
# define my_sleep sleep
#endif
#if USEWIN32API || USEIRIXAPI
/* The Win32 and IRIX snprintf functions returns -1 if the target string is to
* small. So we need this crappy hack to allocate a buffer of the right size..
*/
# define my_asprintf(__result, ...) \
({ \
int __size = 64, __rc; \
*(__result) = malloc(__size + 1); \
while (1) { \
__rc = snprintf(*(__result), __size + 1, \
## __VA_ARGS__); \
if (__rc >= 0 && __rc < __size) break; \
free(*(__result)); \
__size *= 2; \
*(__result) = malloc(__size + 1); \
} \
__rc; \
})
# define my_vasprintf(__result, ...) \
({ \
int __size = 64, __rc; \
*(__result) = malloc(__size + 1); \
while (1) { \
__rc = vsnprintf(*(__result), __size + 1, \
## __VA_ARGS__); \
if (__rc >= 0 && __rc < __size) break; \
free(*(__result)); \
__size *= 2; \
*(__result) = malloc(__size + 1); \
} \
__rc; \
})
#else
# define my_asprintf asprintf
# define my_vasprintf vasprintf
#endif
#if USECYGWINAPI || USEMACOSXAPI || USEWIN32API || USEIRIXAPI
# define my_dprintf(__fd, ...) \
({ \
char *__data; \
int __rc = my_asprintf(&__data, ## __VA_ARGS__); \
for (int __written = 0, __rc2 = 0; __written < __rc; \
__written += __rc2) { \
__rc2 = write((__fd), __data+__written, \
__rc-__written); \
if (__rc2 <= 0) break; \
} \
free(__data); __rc; \
})
#include <unistd.h>
static inline ssize_t my_sendfile(int out_fd, int in_fd, off_t *offset, size_t count)
{
char buffer[count];
int read_rc = read(in_fd, buffer, count);
if (read_rc <= 0)
return read_rc;
int write_rc = 0;
while (write_rc < read_rc) {
int rc = write(out_fd, buffer+write_rc, read_rc-write_rc);
if (rc <= 0) return rc ? rc : write_rc;
write_rc += rc;
}
return write_rc;
}
#else
# define my_dprintf dprintf
# define my_sendfile sendfile
#endif
#endif
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