usr.bin/diff/diffreg.c

295 	FILE *f1, *f2;
298 	f1 = f2 = NULL;
314 		f1 = fopen(_PATH_DEVNULL, "r");
317 			if ((f1 = opentemp(file1)) == NULL ||
318 			    fstat(fileno(f1), &stb1) == -1) {
324 			f1 = stdin;
326 			f1 = fopen(file1, "r");
328 	if (f1 == NULL) {
355 	switch (files_differ(f1, f2, flags)) {
367 	    (!asciifile(f1) || !asciifile(f2))) {
372 	prepare(0, f1, stb1.st_size, flags);
402 	check(f1, f2, flags);
403 	output(file1, f1, file2, f2, flags);
410 	if (f1 != NULL)
411 		fclose(f1);
424 files_differ(FILE *f1, FILE *f2, int flags)
437 		i = fread(buf1, 1, sizeof(buf1), f1);
439 		if ((!i && ferror(f1)) || (!j && ferror(f2)))
699 check(FILE *f1, FILE *f2, int flags)
704 	rewind(f1);
712 			ixold[i] = ctold += skipline(f1);
721 				c = getc(f1);
744 					} while (isspace(c = getc(f1)));
752 						c = getc(f1);
764 						ctold += skipline(f1);
776 				if ((c = getc(f1)) != (d = getc(f2))) {
780 						ctold += skipline(f1);
858 output(char *file1, FILE *f1, char *file2, FILE *f2, int flags)
862 	rewind(f1);
877 			change(file1, f1, file2, f2, i0, i1, j0, j1, &flags);
889 			change(file1, f1, file2, f2, i1, i0, j1, j0, &flags);
893 		change(file1, f1, file2, f2, 1, 0, 1, len[1], &flags);
897 			if ((c = getc(f1)) == EOF)
905 			dump_context_vec(f1, f2, flags);
907 			dump_unified_vec(f1, f2, flags);
963 change(char *file1, FILE *f1, char *file2, FILE *f2, int a, int b, int c, int d,
981 				line = preadline(fileno(f1),
1027 				dump_context_vec(f1, f2, *pflags);
1029 				dump_unified_vec(f1, f2, *pflags);
1068 		fetch(ixold, a, b, f1, '<', 1, *pflags);
1299 dump_context_vec(FILE *f1, FILE *f2, int flags)
1317 		f = match_function(ixold, lowa-1, f1);
1350 				fetch(ixold, lowa, b, f1, ' ', 0, flags);
1352 				fetch(ixold, lowa, a - 1, f1, ' ', 0, flags);
1353 				fetch(ixold, a, b, f1,
1359 		fetch(ixold, b + 1, upb, f1, ' ', 0, flags);
1402 dump_unified_vec(FILE *f1, FILE *f2, int flags)
1424 		f = match_function(ixold, lowa-1, f1);
1452 			fetch(ixold, lowa, a - 1, f1, ' ', 0, flags);
1453 			fetch(ixold, a, b, f1, '-', 0, flags);
1457 			fetch(ixold, lowa, a - 1, f1, ' ', 0, flags);
1458 			fetch(ixold, a, b, f1, '-', 0, flags);