--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/netdiff/match/main.c	Mon Sep 07 04:57:37 2020 +0000
@@ -0,0 +1,67 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include "struct.h"
+
+char *infnames[2];
+struct pin_info *database;
+
+write_diffs_report(outfile)
+	char *outfile;
+{
+	FILE *outf;
+	struct pin_info *p;
+
+	outf = fopen(outfile, "w");
+	if (!outf) {
+		perror(outfile);
+		exit(1);
+	}
+	for (p = database; p; p = p->next) {
+		if (p->netnames[0] && !p->netnames[1])
+			fprintf(outf, "Pin %s only in %s: net %s\n",
+				p->pin_name, infnames[0], p->netnames[0]);
+		if (!p->netnames[0] && p->netnames[1])
+			fprintf(outf, "Pin %s only in %s: net %s\n",
+				p->pin_name, infnames[1], p->netnames[1]);
+	}
+	fclose(outf);
+}
+
+write_matching_nets(outfile)
+	char *outfile;
+{
+	FILE *outf;
+	struct pin_info *p;
+
+	outf = fopen(outfile, "w");
+	if (!outf) {
+		perror(outfile);
+		exit(1);
+	}
+	for (p = database; p; p = p->next) {
+		if (!p->netnames[0] || !p->netnames[1])
+			continue;
+		fprintf(outf, "%s\t%s\n", p->netnames[0], p->netnames[1]);
+	}
+	fclose(outf);
+}
+
+main(argc, argv)
+	char **argv;
+{
+	int i;
+
+	if (argc != 5) {
+		fprintf(stderr,
+			"usage: %s net1 net2 diffs-report matching-nets\n",
+			argv[0]);
+		exit(1);
+	}
+	infnames[0] = argv[1];
+	infnames[1] = argv[2];
+	for (i = 0; i < 2; i++)
+		read_pass(i);
+	write_diffs_report(argv[3]);
+	write_matching_nets(argv[4]);
+	exit(0);
+}