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uemacs: Add ARRAY_SIZE macro so we can get rid of some hard coded calculations.

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Signed-off-by: Thiago Farina <thiago.farina@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Thiago Farina 2010-06-03 20:36:01 -03:00 committed by Linus Torvalds
parent e32cecc843
commit 9489673a1b
3 changed files with 17 additions and 12 deletions
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19
eval.c
View File

@ -6,11 +6,12 @@
* modified by Petri Kutvonen * modified by Petri Kutvonen
*/ */
#include <stdio.h> #include <stdio.h>
#include "estruct.h" #include "estruct.h"
#include "edef.h" #include "edef.h"
#include "efunc.h" #include "efunc.h"
#include "evar.h" #include "evar.h"
#include "util.h"
void varinit(void) void varinit(void)
{ /* initialize the user variable list */ { /* initialize the user variable list */
@ -196,13 +197,13 @@ char *gtenv(char *vname)
int vnum; /* ordinal number of var refrenced */ int vnum; /* ordinal number of var refrenced */
/* scan the list, looking for the referenced name */ /* scan the list, looking for the referenced name */
for (vnum = 0; vnum < NEVARS; vnum++) for (vnum = 0; vnum < ARRAY_SIZE(envars); vnum++)
if (strcmp(vname, envars[vnum]) == 0) if (strcmp(vname, envars[vnum]) == 0)
break; break;
/* return errorm on a bad reference */ /* return errorm on a bad reference */
if (vnum == NEVARS) if (vnum == ARRAY_SIZE(envars))
#if ENVFUNC #if ENVFUNC
{ {
char *ename = getenv(vname); char *ename = getenv(vname);
@ -453,11 +454,11 @@ void findvar(char *var, VDESC *vd, int size)
vnum = -1; vnum = -1;
fvar: fvar:
vtype = -1; vtype = -1;
switch (var[0]) { switch (var[0]) {
case '$': /* check for legal enviromnent var */ case '$': /* check for legal enviromnent var */
for (vnum = 0; vnum < NEVARS; vnum++) for (vnum = 0; vnum < ARRAY_SIZE(envars); vnum++)
if (strcmp(&var[1], envars[vnum]) == 0) { if (strcmp(&var[1], envars[vnum]) == 0) {
vtype = TKENV; vtype = TKENV;
break; break;

4
evar.h
View File

@ -67,9 +67,7 @@ static char *envars[] = {
#endif #endif
}; };
#define NEVARS sizeof(envars) / sizeof(char *) /* and its preprocesor definitions */
/* and its preprocesor definitions */
#define EVFILLCOL 0 #define EVFILLCOL 0
#define EVPAGELEN 1 #define EVPAGELEN 1

6
util.h Normal file
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@ -0,0 +1,6 @@
#ifndef UTIL_H_
#define UTIL_H_
#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
#endif /* UTIL_H_ */