Add original unix v6

2018-01-27 22:35:41 +09:00
commit 2c7099ee50
664 changed files with 106254 additions and 0 deletions
@@ -0,0 +1,90 @@
+int	ibuf1[259];
+int	ibuf2[259];
+int	eflg;
+int	lflg	1;
+int	line[2]	{0, 1};
+int	chr[2] { -1, -1};
+
+main(argc, argv)
+char **argv;
+{
+	register c1, c2;
+	char *arg;
+
+	if(argc < 3)
+		goto narg;
+	arg = argv[1];
+	if(arg[0] == '-' && arg[1] == 's') {
+		lflg--;
+		argv++;
+		argc--;
+	}
+	arg = argv[1];
+	if(arg[0] == '-' && arg[1] == 'l') {
+		lflg++;
+		argv++;
+		argc--;
+	}
+	if(argc < 3)
+		goto narg;
+	arg = argv[1];
+	if( arg[0]=='-' && arg[1]==0 )
+		ibuf1[0] = dup(0);
+	else if(fopen(arg, ibuf1) < 0)
+		goto barg;
+	arg = argv[2];
+	if(fopen(arg, ibuf2) < 0)
+		goto barg;
+
+loop:
+	if (++chr[1]==0)
+		chr[0]++;
+	c1 = getc(ibuf1);
+	c2 = getc(ibuf2);
+	if(c1 == c2) {
+		if (c1 == '\n')
+			if (++line[1]==0)
+				line[0]++;
+		if(c1 == -1) {
+			if(eflg)
+				exit(1);
+			exit(0);
+		}
+		goto loop;
+	}
+	if(lflg == 0)
+		exit(1);
+	if(c1 == -1) {
+		arg = argv[1];
+		goto earg;
+	}
+	if(c2 == -1)
+		goto earg;
+	if(lflg == 1) {
+		printf("%s %s differ: char %s, line ", argv[1], arg,
+			locv(chr[0], chr[1]));
+		printf("%s\n", locv(line[0], line[1]));
+		exit(1);
+	}
+	eflg = 1;
+	printf("%5s %3o %3o\n", locv(chr[0], chr[1]), c1, c2);
+	goto loop;
+
+narg:
+	printf("arg count\n");
+	exit(2);
+
+barg:
+	printf("cannot open %s\n", arg);
+	exit(2);
+
+earg:
+	printf("EOF on %s\n", arg);
+	exit(1);
+}
+
+putchar(c)
+{
+
+	write(1, &c, 1);
+}