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/*
* Copyright (c) 2007, Novell Inc.
*
* This program is licensed under the BSD license, read LICENSE.BSD
* for further information
*/
/*
* util.h
*
*/
#ifndef LIBSOLV_UTIL_H
#define LIBSOLV_UTIL_H
#include <stddef.h>
#include <string.h>
/**
* malloc
* exits with error message on error
*/
extern void *solv_malloc(size_t);
extern void *solv_malloc2(size_t, size_t);
extern void *solv_calloc(size_t, size_t);
extern void *solv_realloc(void *, size_t);
extern void *solv_realloc2(void *, size_t, size_t);
extern void *solv_free(void *);
extern char *solv_strdup(const char *);
extern void solv_oom(size_t, size_t);
extern unsigned int solv_timems(unsigned int subtract);
extern void solv_sort(void *base, size_t nmemb, size_t size, int (*compar)(const void *, const void *, void *), void *compard);
extern char *solv_dupjoin(const char *str1, const char *str2, const char *str3);
extern char *solv_dupappend(const char *str1, const char *str2, const char *str3);
extern int solv_hex2bin(const char **strp, unsigned char *buf, int bufl);
extern char *solv_bin2hex(const unsigned char *buf, int l, char *str);
static inline void *solv_extend(void *buf, size_t len, size_t nmemb, size_t size, size_t block)
{
if (nmemb == 1)
{
if ((len & block) == 0)
buf = solv_realloc2(buf, len + (1 + block), size);
}
else
{
if (((len - 1) | block) != ((len + nmemb - 1) | block))
buf = solv_realloc2(buf, (len + (nmemb + block)) & ~block, size);
}
return buf;
}
/**
* extend an array by reallocation and zero's the new section
* buf old pointer
* len current size
* nmbemb number of elements to add
* size size of each element
* block block size used to allocate the elements
*/
static inline void *solv_zextend(void *buf, size_t len, size_t nmemb, size_t size, size_t block)
{
buf = solv_extend(buf, len, nmemb, size, block);
memset((char *)buf + len * size, 0, nmemb * size);
return buf;
}
static inline void *solv_extend_resize(void *buf, size_t len, size_t size, size_t block)
{
if (len)
buf = solv_realloc2(buf, (len + block) & ~block, size);
return buf;
}
static inline void *solv_calloc_block(size_t len, size_t size, size_t block)
{
void *buf;
if (!len)
return 0;
buf = solv_malloc2((len + block) & ~block, size);
memset(buf, 0, ((len + block) & ~block) * size);
return buf;
}
#endif /* LIBSOLV_UTIL_H */
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