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easy the way to accept other modifiers for 'mode' in 'io.open'

This commit is contained in:
Roberto Ierusalimschy 2015-11-23 09:36:11 -02:00
parent f230898ad6
commit 71344b5cac
1 changed files with 13 additions and 7 deletions
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20
liolib.c
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@ -1,5 +1,5 @@
/*
** $Id: liolib.c,v 2.146 2015/07/07 17:03:34 roberto Exp roberto $
** $Id: liolib.c,v 2.147 2015/07/15 14:40:28 roberto Exp roberto $
** Standard I/O (and system) library
** See Copyright Notice in lua.h
*/
@ -23,18 +23,24 @@
#include "lualib.h"
#if !defined(l_checkmode)
/*
** Check whether 'mode' matches '[rwa]%+?b?'.
** Change this macro to accept other modes for 'fopen' besides
** the standard ones.
*/
#if !defined(l_checkmode)
/* accepted extensions to 'mode' in 'fopen' */
#if !defined(L_MODEEXT)
#define L_MODEEXT "b"
#endif
/* Check whether 'mode' matches '[rwa]%+?[L_MODEEXT]*' */
#define l_checkmode(mode) \
(*mode != '\0' && strchr("rwa", *(mode++)) != NULL && \
(*mode != '+' || ++mode) && /* skip if char is '+' */ \
(*mode != 'b' || ++mode) && /* skip if char is 'b' */ \
(*mode == '\0'))
(*mode != '+' || (++mode, 1)) && /* skip if char is '+' */ \
(strspn(mode, L_MODEEXT) == strlen(mode)))
#endif
@ -469,7 +475,7 @@ static int read_line (lua_State *L, FILE *f, int chop) {
int c = '\0';
luaL_buffinit(L, &b);
while (c != EOF && c != '\n') { /* repeat until end of line */
char *buff = luaL_prepbuffer(&b); /* pre-allocate buffer */
char *buff = luaL_prepbuffer(&b); /* preallocate buffer */
int i = 0;
l_lockfile(f); /* no memory errors can happen inside the lock */
while (i < LUAL_BUFFERSIZE && (c = l_getc(f)) != EOF && c != '\n')