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further optimisation attempts in the str_save() and str_nsave() area

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This commit is contained in:
tg
2008-07-12 17:23:00 +00:00
parent e95a79e31c
commit b6236be77a
2 changed files with 48 additions and 21 deletions
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44
misc.c
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@ -6,7 +6,7 @@
#include <grp.h>
#endif
__RCSID("$MirOS: src/bin/mksh/misc.c,v 1.80 2008/07/12 16:26:58 tg Exp $");
__RCSID("$MirOS: src/bin/mksh/misc.c,v 1.81 2008/07/12 17:23:00 tg Exp $");
#undef USE_CHVT
#if defined(TIOCSCTTY) && !defined(MKSH_SMALL)
@ -63,25 +63,35 @@ initctypes(void)
setctypes(" \n\t\"#$&'()*;<>?[]\\`|", C_QUOTE);
}
/* Allocate a string of size n+1 and copy upto n characters from the possibly
* NUL terminated string s into it. Always returns a NUL terminated string
* (unless n < 0).
*/
char *
str_nsave(const char *s, int n, Area *ap)
{
char *ns = NULL;
if (n >= 0 && s)
strlcpy(ns = alloc(n + 1, ap), s, n + 1);
return (ns);
}
#ifdef MKSH_SMALL
char *
str_save(const char *s, Area *ap)
str_save_s(const char *s, Area *ap)
{
return (s ? str_nsave(s, strlen(s), ap) : NULL);
char *rv;
size_t sz;
sz = strlen(s) + 1;
strlcpy(rv = alloc(sz, ap), s, sz);
return (rv);
}
char *
str_nsave_s(const char *s, int n, Area *ap)
{
char *rv = NULL;
if (n >= 0)
strlcpy(rv = alloc(n + 1, ap), s, n + 1);
return (rv);
}
#elif !HAVE_EXPSTMT
char *
str_nsave_ns(const char *s, unsigned int sz, Area *ap)
{
char *rv;
strlcpy(rv = alloc(sz, ap), s, sz);
return (rv);
}
#endif

25
sh.h
View File

@ -100,7 +100,7 @@
#define __SCCSID(x) __IDSTRING(sccsid,x)
#ifdef EXTERN
__RCSID("$MirOS: src/bin/mksh/sh.h,v 1.224 2008/07/10 21:55:08 tg Exp $");
__RCSID("$MirOS: src/bin/mksh/sh.h,v 1.225 2008/07/12 17:23:00 tg Exp $");
#endif
#define MKSH_VERSION "R35 2008/07/10"
@ -1423,11 +1423,28 @@ struct tbl **ktsort(struct table *);
void setctypes(const char *, int);
void initctypes(void);
#ifdef MKSH_SMALL
char *str_save(const char *, Area *);
#define str_save(s,ap) ((s) ? str_save_s((s), (ap)) : NULL)
#define str_nsave(s,n,ap) ((s) ? str_nsave_s((s), (n), (ap)) : NULL)
char *str_save_s(const char *, Area *);
char *str_nsave_s(const char *, int, Area *);
#else
#define str_save(s,ap) (str_nsave((s), (s) ? strlen(s) : 0, (ap)))
#if HAVE_EXPSTMT
#define str_nsave_ns(s,sz,ap) ({ \
unsigned int str_nsave_ns_sz = (sz); \
char *str_nsave_ns_rv = alloc(str_nsave_ns_sz, (ap)); \
strlcpy(str_nsave_ns_rv, (s), str_nsave_ns_sz); \
(str_nsave_ns_rv); \
})
#else
char *str_nsave_ns(const char *, unsigned int, Area *);
#endif
#define str_save(s,ap) ((s) \
? str_nsave_ns((s), strlen(s) + 1, (ap)) \
: NULL)
#define str_nsave(s,n,ap) (((s) && ((n) >= 0)) \
? str_nsave_ns((s), (n) + 1, (ap)) \
: NULL)
#endif
char *str_nsave(const char *, int, Area *);
size_t option(const char *);
char *getoptions(void);
void change_flag(enum sh_flag, int, char);