1 files changed, 152 insertions, 0 deletions
diff --git a/usr.bin/rcs/ident.c b/usr.bin/rcs/ident.c
new file mode 100644
index 00000000000..48eacb36f5d
--- /dev/null
+++ b/usr.bin/rcs/ident.c
@@ -0,0 +1,152 @@
+/*	$OpenBSD: ident.c,v 1.1 2005/10/06 15:39:11 joris Exp $	*/
+/*
+ * Copyright (c) 2005 Xavier Santolaria <xsa@openbsd.org>
+ * 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. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``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 AUTHOR 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/param.h>
+
+#include <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "log.h"
+#include "rcs.h"
+#include "rcsprog.h"
+
+#define KEYDELIM	'$'	/* keywords delimitor */
+#define VALDELIM	':'	/* values delimitor */
+
+extern char *__progname;
+
+static int	ident_file(const char *, FILE *);
+static int	ident_line(FILE *);
+
+int
+ident_main(int argc, char **argv)
+{
+	int i, ch;
+	FILE *fp;
+
+	while ((ch = getopt(argc, argv, "qV")) != -1) {
+		switch(ch) {
+		case 'q':
+			verbose = 0;
+			break;
+		case 'V':
+			printf("%s\n", rcs_version);
+			exit(0);
+		default:
+			(usage)();
+			exit(1);
+		}
+	}
+
+	argc -= optind;
+	argv += optind;
+
+	if (argc == 0) {
+		ident_file(NULL, stdin);
+	} else {
+		for (i = 0; i < argc; i++) {
+			if ((fp = fopen(argv[i], "r")) == NULL) {
+				cvs_log(LP_ERRNO, "%s", argv[i]);
+				continue;
+			}
+
+			ident_file(argv[i], fp);
+			fclose(fp);
+		}
+	}
+
+	return (0);
+}
+
+
+static int
+ident_file(const char *filename, FILE *fp)
+{
+	int c;
+
+	if (fp != stdin)
+		printf("%s:\n", filename);
+
+	for (c = 0; c != EOF; (c = getc(fp))) {
+		if ((feof(fp)) || (ferror(fp)))
+			break;
+		if (c == KEYDELIM)
+			ident_line(fp);
+	}
+
+	return (0);
+}
+
+static int
+ident_line(FILE *fp)
+{
+	int c;
+	char *p, linebuf[1024];
+
+	p = linebuf;
+
+	while ((c = getc(fp)) != VALDELIM) {
+		if ((c == EOF) && (feof(fp) | ferror(fp)))
+			return (0);
+
+		if (isalpha(c))
+			*(p++) = c;
+		else
+			return (0);
+	}
+
+	*(p++) = ':';
+
+	while ((c = getc(fp)) != KEYDELIM) {
+		if ((c == EOF) && (feof(fp) | ferror(fp)))
+			return (0);
+
+		if (c == '\n')
+			return (0);
+
+		*(p++) = c;
+	}
+
+	if (p[-1] != ' ')
+		return (0);
+
+	/* append trailing KEYDELIM */
+	*(p++) = c;
+	*p = '\0';
+
+	printf("\t%c%s\n", KEYDELIM, linebuf);
+
+	return (0);
+}
+
+void
+ident_usage(void)
+{
+	fprintf(stderr, "Usage: %s [-qV] file ...\n", __progname);
+}