d/freebsd-skq
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Add a flag (-q) which prints no header for the file and which doesn't indent the

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match text; it also doesn't warn() for files which can't be opened.  Remove
global variables.  Use bool.  fopen(3) the files instead of freopen(3)ing stdin.
This commit is contained in:
jmallett 2005-05-12 18:57:37 +00:00
parent 2b0b1f0030
commit 85f5689fb5
2 changed files with 61 additions and 33 deletions
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9
usr.bin/what/what.1
View File

@ -41,7 +41,7 @@
.Nd "show what versions of object modules were used to construct a file"
.Sh SYNOPSIS
.Nm
.Op Fl s
.Op Fl qs
.Op Ar
.Sh DESCRIPTION
The
@ -59,6 +59,8 @@ character, or backslash.
.Pp
The following option is available:
.Bl -tag -width Ds
.It Fl q
Only output the match text, rather than formatting it.
.It Fl s
Stop searching each file after the first match.
.El
@ -72,6 +74,11 @@ The
.Nm
utility conforms to
.St -p1003.1-2001 .
The
.Fl q
option is a non-standard
.Fx
extension which may not be available on other operating systems.
.Sh HISTORY
The
.Nm

85
usr.bin/what/what.c
View File

@ -46,75 +46,96 @@ static const char sccsid[] = "@(#)what.c 8.1 (Berkeley) 6/6/93";
#endif
#include <err.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
static int sflag;
static int found;
void search(void);
static void usage(void);
static bool search(bool, bool, FILE *);
/*
* what
*/
int
main(int argc, char **argv)
main(int argc, char *argv[])
{
const char *file;
FILE *in;
bool found, qflag, sflag;
int c;
while ((c = getopt(argc, argv, "s")) != -1)
qflag = sflag = false;
while ((c = getopt(argc, argv, "qs")) != -1) {
switch (c) {
case 'q':
qflag = true;
break;
case 's':
sflag = 1;
sflag = true;
break;
default:
usage();
}
}
argc -= optind;
argv += optind;
if (!*argv)
search();
else do {
if (!freopen(*argv, "r", stdin))
warn("%s", *argv);
else {
printf("%s:\n", *argv);
search();
found = false;
if (argc == 0) {
if (search(sflag, qflag, stdin))
found = true;
} else {
while (argc--) {
file = *argv++;
in = fopen(file, "r");
if (in == NULL) {
if (!qflag)
warn("%s", file);
continue;
}
if (!qflag)
printf("%s:\n", file);
if (search(sflag, qflag, in))
found = true;
fclose(in);
}
} while(*++argv);
exit(!found);
}
exit(found ? 0 : 1);
}
static void
usage(void)
{
(void)fprintf(stderr, "usage: what [-s] [file ...]\n");
fprintf(stderr, "usage: what [-qs] [file ...]\n");
exit(1);
}
void
search(void)
bool
search(bool one, bool quiet, FILE *in)
{
bool found;
int c;
while ((c = getchar()) != EOF) {
found = false;
while ((c = getc(in)) != EOF) {
loop: if (c != '@')
continue;
if ((c = getchar()) != '(')
if ((c = getc(in)) != '(')
goto loop;
if ((c = getchar()) != '#')
if ((c = getc(in)) != '#')
goto loop;
if ((c = getchar()) != ')')
if ((c = getc(in)) != ')')
goto loop;
putchar('\t');
while ((c = getchar()) != EOF && c && c != '"' &&
if (!quiet)
putchar('\t');
while ((c = getc(in)) != EOF && c && c != '"' &&
c != '>' && c != '\\' && c != '\n')
putchar(c);
putchar('\n');
found = 1;
if (sflag)
return;
found = true;
if (one)
break;
}
return (found);
}