mirror of
https://github.com/awesomeWM/awesome
synced 2024-11-05 20:26:09 +01:00
126 lines
3.5 KiB
C
126 lines
3.5 KiB
C
/*
|
|
* util.c - useful functions header
|
|
*
|
|
* Copyright © 2007 Julien Danjou <julien@danjou.info>
|
|
* Copyright © 2006 Pierre Habouzit <madcoder@debian.org>
|
|
*
|
|
* 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.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*
|
|
*/
|
|
|
|
#ifndef AWESOME_MEM_H
|
|
#define AWESOME_MEM_H
|
|
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include "config.h"
|
|
|
|
#define ssizeof(foo) (ssize_t)sizeof(foo)
|
|
#define countof(foo) (ssizeof(foo) / ssizeof(foo[0]))
|
|
|
|
#define p_new(type, count) ((type *)xmalloc(sizeof(type) * (count)))
|
|
#define p_clear(p, count) ((void)memset((p), 0, sizeof(*(p)) * (count)))
|
|
#define p_realloc(pp, count) xrealloc((void*)(pp) sizeof(**(pp) * (count)))
|
|
#define p_dup(p, count) xmemdup((p), sizeof(*(p)) * (count))
|
|
|
|
#ifdef __GNUC__
|
|
|
|
#define p_delete(mem_pp) \
|
|
do { \
|
|
typeof(**(mem_pp)) **__ptr = (mem_pp); \
|
|
free(*__ptr); \
|
|
*__ptr = NULL; \
|
|
} while(0)
|
|
|
|
#else
|
|
|
|
#define p_delete(mem_p) \
|
|
do { \
|
|
void *__ptr = (mem_p); \
|
|
free(*__ptr); \
|
|
*(void **)__ptr = NULL; \
|
|
} while (0)
|
|
|
|
#endif
|
|
|
|
static inline void * __attribute__ ((malloc)) xmalloc(ssize_t size)
|
|
{
|
|
void *ptr;
|
|
|
|
if(size <= 0)
|
|
return NULL;
|
|
|
|
ptr = calloc(1, size);
|
|
|
|
if(!ptr)
|
|
abort();
|
|
|
|
return ptr;
|
|
}
|
|
|
|
static inline void
|
|
xrealloc(void **ptr, ssize_t newsize)
|
|
{
|
|
if(newsize <= 0)
|
|
p_delete(ptr);
|
|
else
|
|
{
|
|
*ptr = realloc(*ptr, newsize);
|
|
if(!*ptr)
|
|
abort();
|
|
}
|
|
}
|
|
|
|
static inline void *xmemdup(const void *src, ssize_t size)
|
|
{
|
|
return memcpy(xmalloc(size), src, size);
|
|
}
|
|
|
|
/** \brief \c NULL resistant strlen.
|
|
*
|
|
* Unlinke it's libc sibling, a_strlen returns a ssize_t, and supports its
|
|
* argument beeing NULL.
|
|
*
|
|
* \param[in] s the string.
|
|
* \return the string length (or 0 if \c s is \c NULL).
|
|
*/
|
|
static inline ssize_t a_strlen(const char *s)
|
|
{
|
|
return s ? strlen(s) : 0;
|
|
}
|
|
|
|
|
|
/** \brief \c NULL resistant strdup.
|
|
*
|
|
* the a_strdup() function returns a pointer to a new string, which is a
|
|
* duplicate of \c s. Memory should be freed using p_delete().
|
|
*
|
|
* \warning when s is \c "", it returns NULL !
|
|
*
|
|
* \param[in] s the string to duplicate.
|
|
* \return a pointer to the duplicated string.
|
|
*/
|
|
static inline char *a_strdup(const char *s)
|
|
{
|
|
ssize_t len = a_strlen(s);
|
|
return len ? p_dup(s, len + 1) : NULL;
|
|
}
|
|
|
|
void eprint(const char *, ...) __attribute__ ((noreturn)) __attribute__ ((format(printf, 1, 2)));
|
|
void uicb_spawn(Display *, int, DC *, awesome_config *, const char *);
|
|
Bool xgettextprop(Display *, Window, Atom, char *, unsigned int);
|
|
double compute_new_value_from_arg(const char *, double);
|
|
|
|
#endif
|