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detail (macro 'l_checkmode' reimplemented as function)

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This commit is contained in:
Roberto Ierusalimschy 2016-09-01 13:14:56 -03:00
parent 349badabc1
commit 3b91b07fd9
1 changed files with 6 additions and 5 deletions
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11
liolib.c
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@ -1,5 +1,5 @@
/*
** $Id: liolib.c,v 2.148 2015/11/23 11:36:11 roberto Exp roberto $
** $Id: liolib.c,v 2.149 2016/05/02 14:03:19 roberto Exp roberto $
** Standard I/O (and system) library
** See Copyright Notice in lua.h
*/
@ -37,10 +37,11 @@
#endif
/* Check whether 'mode' matches '[rwa]%+?[L_MODEEXT]*' */
#define l_checkmode(mode) \
(*mode != '\0' && strchr("rwa", *(mode++)) != NULL && \
(*mode != '+' || (++mode, 1)) && /* skip if char is '+' */ \
(strspn(mode, L_MODEEXT) == strlen(mode)))
static int l_checkmode (const char *mode) {
return (*mode != '\0' && strchr("rwa", *(mode++)) != NULL &&
(*mode != '+' || (++mode, 1)) && /* skip if char is '+' */
(strspn(mode, L_MODEEXT) == strlen(mode))); /* check extensions */
}
#endif