JehanneOS/mksh
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

oksh rcsid-only sync, plus bonus rewrite of strip_nuls

Browse Source 
(uses size_t ipv int for buffer size now, and no extra
calls to memchr/memmove, input is typically small)
This commit is contained in:
tg 2015-03-20 21:46:41 +00:00
parent 8967f13bc6
commit 2097d45f7f
2 changed files with 22 additions and 26 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

43
misc.c
View File

@ -1,4 +1,4 @@
/* $OpenBSD: misc.c,v 1.39 2015/01/16 06:39:32 deraadt Exp $ */ /* $OpenBSD: misc.c,v 1.40 2015/03/18 15:12:36 tedu Exp $ */
/* $OpenBSD: path.c,v 1.12 2005/03/30 17:16:37 deraadt Exp $ */ /* $OpenBSD: path.c,v 1.12 2005/03/30 17:16:37 deraadt Exp $ */
/*- /*-
@ -30,7 +30,7 @@
#include <grp.h> #include <grp.h>
#endif #endif
__RCSID("$MirOS: src/bin/mksh/misc.c,v 1.225 2015/03/01 15:23:04 tg Exp $"); __RCSID("$MirOS: src/bin/mksh/misc.c,v 1.226 2015/03/20 21:46:40 tg Exp $");
#define KSH_CHVT_FLAG #define KSH_CHVT_FLAG
#ifdef MKSH_SMALL #ifdef MKSH_SMALL
@ -1289,32 +1289,27 @@ print_columns(struct shf *shf, unsigned int n,
afree(str, ATEMP); afree(str, ATEMP);
} }
/* Strip any nul bytes from buf - returns new length (nbytes - # of nuls) */ /* strip all NUL bytes from buf; output is NUL-terminated if stripped */
void void
strip_nuls(char *buf, int nbytes) strip_nuls(char *buf, size_t len)
{ {
char *dst; char *cp, *dp, *ep;
/* if (!len || !(dp = memchr(buf, '\0', len)))
* nbytes check because some systems (older FreeBSDs) have a return;
* buggy memchr()
*/
if (nbytes && (dst = memchr(buf, '\0', nbytes))) {
char *end = buf + nbytes;
char *p, *q;
for (p = dst; p < end; p = q) { ep = buf + len;
/* skip a block of nulls */ cp = dp;
while (++p < end && *p == '\0')
; cp_has_nul_byte:
/* find end of non-null block */ while (cp++ < ep && *cp == '\0')
if (!(q = memchr(p, '\0', end - p))) ; /* nothing */
q = end; while (cp < ep && *cp != '\0')
memmove(dst, p, q - p); *dp++ = *cp++;
dst += q - p; if (cp < ep)
} goto cp_has_nul_byte;
*dst = '\0';
} *dp = '\0';
} }
/* /*

5
sh.h
View File

@ -169,7 +169,7 @@
#endif #endif
#ifdef EXTERN #ifdef EXTERN
__RCSID("$MirOS: src/bin/mksh/sh.h,v 1.719 2015/03/14 05:23:17 tg Exp $"); __RCSID("$MirOS: src/bin/mksh/sh.h,v 1.720 2015/03/20 21:46:41 tg Exp $");
#endif #endif
#define MKSH_VERSION "R50 2015/03/13" #define MKSH_VERSION "R50 2015/03/13"
@ -1869,7 +1869,8 @@ char *quote_value(const char *);
void print_columns(struct shf *, unsigned int, void print_columns(struct shf *, unsigned int,
char *(*)(char *, size_t, unsigned int, const void *), char *(*)(char *, size_t, unsigned int, const void *),
const void *, size_t, size_t, bool); const void *, size_t, size_t, bool);
void strip_nuls(char *, int); void strip_nuls(char *, size_t)
MKSH_A_BOUNDED(__string__, 1, 2);
ssize_t blocking_read(int, char *, size_t) ssize_t blocking_read(int, char *, size_t)
MKSH_A_BOUNDED(__buffer__, 2, 3); MKSH_A_BOUNDED(__buffer__, 2, 3);
int reset_nonblock(int); int reset_nonblock(int);