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#ifndef __ZZIP_INTERNAL_STRING_H
#define __ZZIP_INTERNAL_STRING_H
#ifdef __linux__
#define _GNU_SOURCE _glibc_developers_are_idiots_to_call_strndup_gnu_specific_
#endif
#include <zzip/conf.h>
#if defined ZZIP_HAVE_STRING_H
#include <string.h>
#elif defined ZZIP_HAVE_STRINGS_H
#include <strings.h>
#endif
#if defined ZZIP_HAVE_STRNLEN || defined strnlen
#define _zzip_strnlen strnlen
#else
#include <stdlib.h>
/* if your system does not have strnlen: */
static size_t
_zzip_strnlen(const char *p, size_t maxlen)
{
const char * stop = (char *)memchr(p, '\0', maxlen);
return stop ? (size_t)(stop - p) : maxlen;
}
#endif
#if defined ZZIP_HAVE_STRNDUP || defined strndup
#define _zzip_strndup strndup
#else
#include <stdlib.h>
/* if your system does not have strndup: */
zzip__new__ static char *
_zzip_strndup(char const *p, size_t maxlen)
{
if (p == NULL)
{
return p;
} else
{
size_t len = _zzip_strnlen(p, maxlen);
char* r = (char *)malloc(len + 1);
if (r == NULL)
return NULL; /* errno = ENOMEM */
r[len] = '\0';
return memcpy(r, p, len);
}
}
#endif
#if defined ZZIP_HAVE_STRCASECMP || defined strcasecmp
#define _zzip_strcasecmp strcasecmp
#else
/* if your system does not have strcasecmp: */
static int
_zzip_strcasecmp(char *__zzip_restrict a, char *_zzip_restrict b)
{
if (! a)
return (b) ? 1 : 0;
if (! b)
return -1;
while (1)
{
int v = tolower(*a) - tolower(*b);
if (v)
return v;
if (! *a)
return 1;
if (! *b)
return -1;
a++;
b++;
}
}
#endif
#endif
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