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msh: smallish code shrinkage; cosmetics

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This commit is contained in:
Denis Vlasenko 2007-04-09 03:06:34 +00:00
parent 32b633aa3f
commit 95cb3263ae
1 changed files with 58 additions and 68 deletions
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40
shell/msh.c
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@ -291,15 +291,10 @@ static char flags['z' - 'a' + 1];
/* this looks weird, but is OK ... we index flag with 'a'...'z' */
static char *flag = flags - 'a';
static char *null; /* null value for variable */
static int intr; /* interrupt pending */
/* moved to G: static char *trap[_NSIG + 1]; */
/* moved to G: static char ourtrap[_NSIG + 1]; */
static int trapset; /* trap pending */
static int heedint; /* heed interrupt signals */
static int yynerrs; /* yacc */
/* moved to G: static char line[LINELIM]; */
@ -634,10 +629,9 @@ static const struct res restab[] = {
{ "{" , '{' },
{ "}" , '}' },
{ "." , DOT },
{0, 0},
{ NULL , 0 },
};
struct builtincmd {
const char *name;
int (*builtinfunc)(struct op *t);
@ -663,7 +657,7 @@ static const struct builtincmd builtincmds[] = {
{ "trap" , dotrap },
{ "umask" , doumask },
{ "wait" , dowait },
{0, 0}
{ NULL , NULL },
};
static struct op *scantree(struct op *);
@ -698,10 +692,10 @@ static struct var *shell; /* shell to interpret command files */
static struct var *ifs; /* field separators */
static int areanum; /* current allocation area */
static int intr;
static int intr; /* interrupt pending */
static int inparse;
static char *null = (char*)"";
static int heedint = 1;
static char *null = (char*)""; /* null value for variable */
static int heedint = 1; /* heed interrupt signals */
static void (*qflag) (int) = SIG_IGN;
static int startl;
static int peeksym;
@ -2693,7 +2687,7 @@ typedef int (*builtin_func_ptr)(struct op *);
static builtin_func_ptr inbuilt(const char *s) {
const struct builtincmd *bp;
for (bp = builtincmds; bp->name != NULL; bp++)
for (bp = builtincmds; bp->name; bp++)
if (strcmp(bp->name, s) == 0)
return bp->builtinfunc;
@ -3191,29 +3185,27 @@ static int dohelp(struct op *t)
puts("\nBuilt-in commands:\n"
"-------------------");
for (col = 0, x = builtincmds; x->builtinfunc != NULL; x++) {
if (!x->name)
continue;
col += printf("%s%s", ((col == 0) ? "\t" : " "), x->name);
col = 0;
x = builtincmds;
while (x->name) {
col += printf("%c%s", ((col == 0) ? '\t' : ' '), x->name);
if (col > 60) {
puts("");
col = 0;
}
x++;
}
#if ENABLE_FEATURE_SH_STANDALONE_SHELL
{
int i;
const struct BB_applet *applet;
const struct BB_applet *applet = applets;
for (i = 0, applet = applets; i < NUM_APPLETS; applet++, i++) {
if (!applet->name)
continue;
col += printf("%s%s", ((col == 0) ? "\t" : " "), applet->name);
while (applet->name) {
col += printf("%c%s", ((col == 0) ? '\t' : ' '), applet->name);
if (col > 60) {
puts("");
col = 0;
}
applet++;
}
}
#endif
@ -3221,8 +3213,6 @@ static int dohelp(struct op *t)
return EXIT_SUCCESS;
}
static int dolabel(struct op *t)
{
return 0;