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overhaul parse_args - don't use strlcpy and strlen when overkill

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also fixes off-by-one

saves 48 .text
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tg 2006-11-10 01:52:23 +00:00
parent c60dbdc6cb
commit 242d2c086d
1 changed files with 13 additions and 7 deletions
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20
misc.c
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@ -3,7 +3,7 @@
#include "sh.h"
__RCSID("$MirOS: src/bin/mksh/misc.c,v 1.25 2006/11/10 01:44:39 tg Exp $\t"
__RCSID("$MirOS: src/bin/mksh/misc.c,v 1.26 2006/11/10 01:52:23 tg Exp $\t"
MKSH_SH_H_ID);
unsigned char chtypes[UCHAR_MAX + 1]; /* type bits for unsigned char */
@ -257,7 +257,7 @@ parse_args(char **argv,
int *setargsp)
{
static char cmd_opts[NELEM(options) + 5]; /* o:T:\0 */
static char set_opts[NELEM(options) + 5]; /* Ao;s\0 */
static char set_opts[NELEM(options) + 6]; /* A:o;s\0 */
char *opts;
char *array = NULL;
Getopt go;
@ -266,14 +266,20 @@ parse_args(char **argv,
/* First call? Build option strings... */
if (cmd_opts[0] == '\0') {
char *p, *q;
char *p = cmd_opts, *q = set_opts;
/* see cmd_opts[] declaration */
strlcpy(cmd_opts, "o:T:", sizeof cmd_opts);
p = cmd_opts + strlen(cmd_opts);
*p++ = 'o';
*p++ = ':';
*p++ = 'T';
*p++ = ':';
/* see set_opts[] declaration */
strlcpy(set_opts, "A:o;s", sizeof set_opts);
q = set_opts + strlen(set_opts);
*q++ = 'A';
*q++ = ':';
*q++ = 'o';
*q++ = ';';
*q++ = 's';
for (i = 0; i < NELEM(options); i++) {
if (options[i].c) {
if (options[i].flags & OF_CMDLINE)