1 files changed, 137 insertions, 0 deletions
diff --git a/usr.bin/what/what.c b/usr.bin/what/what.c
new file mode 100644
index 0000000..c72e3fa
--- /dev/null
+++ b/usr.bin/what/what.c
@@ -0,0 +1,137 @@
+/*
+ * Copyright (c) 1980, 1988, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+
+__FBSDID("$FreeBSD$");
+
+#ifndef lint
+static const char copyright[] =
+"@(#) Copyright (c) 1980, 1988, 1993\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif
+
+#ifndef lint
+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 void usage(void);
+static bool search(bool, bool, FILE *);
+
+int
+main(int argc, char *argv[])
+{
+	const char *file;
+	FILE *in;
+	bool found, qflag, sflag;
+	int c;
+
+	qflag = sflag = false;
+
+	while ((c = getopt(argc, argv, "qs")) != -1) {
+		switch (c) {
+		case 'q':
+			qflag = true;
+			break;
+		case 's':
+			sflag = true;
+			break;
+		default:
+			usage();
+		}
+	}
+	argc -= optind;
+	argv += optind;
+
+	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);
+		}
+	}
+	exit(found ? 0 : 1);
+}
+
+static void
+usage(void)
+{
+	fprintf(stderr, "usage: what [-qs] [file ...]\n");
+	exit(1);
+}
+
+bool
+search(bool one, bool quiet, FILE *in)
+{
+	bool found;
+	int c;
+
+	found = false;
+
+	while ((c = getc(in)) != EOF) {
+loop:		if (c != '@')
+			continue;
+		if ((c = getc(in)) != '(')
+			goto loop;
+		if ((c = getc(in)) != '#')
+			goto loop;
+		if ((c = getc(in)) != ')')
+			goto loop;
+		if (!quiet)
+			putchar('\t');
+		while ((c = getc(in)) != EOF && c && c != '"' &&
+		    c != '>' && c != '\\' && c != '\n')
+			putchar(c);
+		putchar('\n');
+		found = true;
+		if (one)
+			break;
+	}
+	return (found);
+}