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LOCAL_COPY_N macro

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This commit is contained in:
Valery Yatsko 2008-04-02 14:03:16 +04:00
parent b871b3263d
commit 4c07af8252
1 changed files with 25 additions and 2 deletions
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27
include/stdinc.h
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@ -140,8 +140,7 @@ extern int errno;
# define __noreturn
#endif
/* XXX must be removed in future!!! -- dwr */
#ifdef strdupa
#define LOCAL_COPY(s) strdupa(s)
#else
@ -150,4 +149,28 @@ extern int errno;
#else
# define LOCAL_COPY(s) strcpy(alloca(strlen(s) + 1), s) /* XXX Is that allowed? */
#endif /* defined(__INTEL_COMPILER) || defined(__GNUC__) */
/* LOCAL_COPY_N copies n part of string and adds one to terminate the string */
#ifdef strndupa
#define LOCAL_COPY_N(s, n) strndupa(s, n)
#else
#if defined(__INTEL_COMPILER) || defined(__GNUC__)
#define LOCAL_COPY_N(s, n) __extension__({ size_t _l = strlen(s); _l = n > _l ? _l : n; char *_s = alloca(_l+1); memcpy(_s, s, _l); _s[_l] = '\0' ; _s; })
#else
#define LOCAL_COPY_N(s, n) xc_strlcpy(alloca(strlen(s)+1), s, n)
INLINE_FUNC size_t
xc_strlcpy(char *dest, const char *src, size_t size)
{
size_t ret = strlen(src);
if (size) {
size_t len = (ret >= size) ? size-1 : ret;
memcpy(dest, src, len);
dest[len] = '\0';
}
return dest;
}
#endif /* defined(__INTEL_COMPILER) || defined(__GNUC__) */
#endif /* strndupa */
#endif /* strdupa */