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bc: cleanup, make sure to run 9 dc

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This commit is contained in:
Russ Cox 2008-12-06 16:45:22 -08:00
parent 6ef0b1cabd
commit 56e6f8f994
1 changed files with 30 additions and 31 deletions
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61
src/cmd/bc.y
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@ -786,9 +786,10 @@ loop:
peekc = -1;
if(ch >= 0)
return ch;
ifile++;
if(ifile > sargc) {
if(ifile >= sargc+2)
if(ifile >= sargc) {
if(ifile >= sargc+1)
getout();
in = &bstdin;
Binit(in, 0, OREAD);
@ -802,6 +803,7 @@ loop:
ss = sargv[ifile];
goto loop;
}
fprint(2, "open %s: %r\n", sargv[ifile]);
yyerror("cannot open input file");
return 0; /* shut up ken */
}
@ -871,7 +873,7 @@ yyerror(char *s, ...)
{
if(ifile > sargc)
ss = "teletype";
Bprint(&bstdout, "c[%s on line %d, %s]pc\n", s, ln+1, ss);
Bprint(&bstdout, "c[%s:%d, %s]pc\n", s, ln+1, ss);
Bflush(&bstdout);
cp = cary;
crs = rcrs;
@ -905,15 +907,15 @@ yyinit(int argc, char **argv)
{
Binit(&bstdout, 1, OWRITE);
sargv = argv;
sargc = argc - 1;
sargc = argc;
if(sargc == 0) {
in = &bstdin;
Binit(in, 0, OREAD);
} else if((in = Bopen(sargv[1], OREAD)) == 0)
} else if((in = Bopen(sargv[0], OREAD)) == 0)
yyerror("cannot open input file");
ifile = 1;
ifile = 0;
ln = 0;
ss = sargv[1];
ss = sargv[0];
}
void
@ -941,31 +943,28 @@ main(int argc, char **argv)
{
int p[2];
while(argc > 1 && *argv[1] == '-') {
switch(argv[1][1]) {
case 'd':
bdebug++;
break;
case 'c':
cflag++;
break;
case 'l':
lflag++;
break;
case 's':
sflag++;
break;
default:
fprint(2, "Usage: bc [-l] [-c] [file ...]\n");
exits("usage");
}
argc--;
argv++;
}
ARGBEGIN{
case 'd':
bdebug++;
break;
case 'c':
cflag++;
break;
case 'l':
lflag++;
break;
case 's':
sflag++;
break;
default:
fprint(2, "Usage: bc [-l] [-c] [file ...]\n");
exits("usage");
}ARGEND
if(lflag) {
argv--;
argc++;
argv[1] = unsharp("#9/lib/bclib");
argv--;
*argv = unsharp("#9/lib/bclib");
}
if(cflag) {
yyinit(argc, argv);
@ -985,5 +984,5 @@ main(int argc, char **argv)
dup(p[0], 0);
close(p[0]);
close(p[1]);
execl("dc", "dc", nil);
execl(unsharp("#9/bin/dc"), "dc", nil);
}