comm: almost total rewrite; add testsuite
function old new delta writeline 128 125 -3 comm_main 540 239 -301 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-304) Total: -304 bytes
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Denis Vlasenko
parent
51f1b6c0e0
commit
bb13079c8e
@ -14,8 +14,9 @@
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#define COMM_OPT_3 (1 << 2)
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/* writeline outputs the input given, appropriately aligned according to class */
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static void writeline(char *line, int class, int flags)
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static void writeline(char *line, int class)
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{
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int flags = option_mask32;
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if (class == 0) {
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if (flags & COMM_OPT_1)
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return;
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@ -32,81 +33,67 @@ static void writeline(char *line, int class, int flags)
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if (!(flags & COMM_OPT_2))
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putchar('\t');
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}
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fputs(line, stdout);
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puts(line);
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}
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int comm_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int comm_main(int argc UNUSED_PARAM, char **argv)
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{
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#define LINE_LEN 100
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#define BB_EOF_0 0x1
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#define BB_EOF_1 0x2
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char thisline[2][LINE_LEN];
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FILE *streams[2];
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char *thisline[2];
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FILE *stream[2];
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int i;
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unsigned flags;
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int order;
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opt_complementary = "=2";
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flags = getopt32(argv, "123");
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getopt32(argv, "123");
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argv += optind;
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for (i = 0; i < 2; ++i) {
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streams[i] = (argv[i][0] == '-' && !argv[i][1]) ? stdin : xfopen(argv[i], "r");
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fgets(thisline[i], LINE_LEN, streams[i]);
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stream[i] = xfopen_stdin(argv[i]);
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}
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/* This is the real core of the program - lines are compared here */
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while (*thisline[0] || *thisline[1]) {
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int order = 0;
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i = 0;
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if (feof(streams[0])) i |= BB_EOF_0;
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if (feof(streams[1])) i |= BB_EOF_1;
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if (!*thisline[0])
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order = 1;
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else if (!*thisline[1])
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order = -1;
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else {
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int tl0_len, tl1_len;
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tl0_len = strlen(thisline[0]);
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tl1_len = strlen(thisline[1]);
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order = memcmp(thisline[0], thisline[1], tl0_len < tl1_len ? tl0_len : tl1_len);
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if (!order)
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order = tl0_len < tl1_len ? -1 : tl0_len != tl1_len;
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order = 0;
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thisline[1] = thisline[0] = NULL;
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while (1) {
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if (order <= 0) {
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free(thisline[0]);
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thisline[0] = xmalloc_fgetline(stream[0]);
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}
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if (order >= 0) {
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free(thisline[1]);
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thisline[1] = xmalloc_fgetline(stream[1]);
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}
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if (order == 0 && !i)
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writeline(thisline[1], 2, flags);
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else if (order > 0 && !(i & BB_EOF_1))
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writeline(thisline[1], 1, flags);
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else if (order < 0 && !(i & BB_EOF_0))
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writeline(thisline[0], 0, flags);
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if (i & BB_EOF_0 & BB_EOF_1) {
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i = !thisline[0] + (!thisline[1] << 1);
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if (i)
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break;
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order = strcmp(thisline[0], thisline[1]);
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} else if (i) {
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i = (i & BB_EOF_0 ? 1 : 0);
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while (!feof(streams[i])) {
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if ((order < 0 && i) || (order > 0 && !i))
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writeline(thisline[i], i, flags);
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fgets(thisline[i], LINE_LEN, streams[i]);
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}
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break;
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if (order >= 0)
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writeline(thisline[1], order ? 1 : 2);
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else
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writeline(thisline[0], 0);
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}
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} else {
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if (order >= 0)
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fgets(thisline[1], LINE_LEN, streams[1]);
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if (order <= 0)
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fgets(thisline[0], LINE_LEN, streams[0]);
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/* EOF at least on one of the streams */
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i &= 1;
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if (thisline[i]) {
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/* stream[i] is not at EOF yet */
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/* we did not print thisline[i] yet */
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char *p = thisline[i];
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writeline(p, i);
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while (1) {
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free(p);
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p = xmalloc_fgetline(stream[i]);
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if (!p)
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break;
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writeline(p, i);
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}
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}
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if (ENABLE_FEATURE_CLEAN_UP) {
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fclose(streams[0]);
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fclose(streams[1]);
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fclose(stream[0]);
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fclose(stream[1]);
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}
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return EXIT_SUCCESS;
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@ -1,12 +1,11 @@
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#!/bin/sh
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# awk tests.
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# Copyright 2007 by Denys Vlasenko <vda.linux@googlemail.com>
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# Licensed under GPL v2, see file LICENSE for details.
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. testing.sh
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# testing "description" "arguments" "result" "infile" "stdin"
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# testing "description" "command" "result" "infile" "stdin"
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testing "awk -F case 0" "awk -F '[#]' '{ print NF }'" "" "" ""
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testing "awk -F case 1" "awk -F '[#]' '{ print NF }'" "0\n" "" "\n"
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19
testsuite/comm.tests
Executable file
19
testsuite/comm.tests
Executable file
@ -0,0 +1,19 @@
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#!/bin/sh
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# Copyright 2008 by Denys Vlasenko <vda.linux@googlemail.com>
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# Licensed under GPL v2, see file LICENSE for details.
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. testing.sh
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# testing "description" "command" "result" "infile" "stdin"
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testing "comm test 1" "comm input -" "\t123\n""456\n""abc\n""\tdef\n" "456\nabc\n" "123\ndef\n"
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testing "comm test 2" "comm - input" "123\n""\t456\n""\tabc\n""def\n" "456\nabc\n" "123\ndef\n"
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testing "comm test 3" "comm input -" "abc\n""\tdef\n""xyz\n" "abc\nxyz\n" "def\n"
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testing "comm test 4" "comm - input" "\tabc\n""def\n""\txyz\n" "abc\nxyz\n" "def\n"
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testing "comm test 5" "comm input -" "123\n""abc\n""\tdef\n" "123\nabc\n" "def\n"
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testing "comm test 6" "comm - input" "\t123\n""\tabc\n""def\n" "123\nabc\n" "def\n"
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testing "comm unterminated line 1" "comm input -" "abc\n""\tdef\n" "abc" "def"
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testing "comm unterminated line 2" "comm - input" "\tabc\n""def\n" "abc" "def"
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exit $FAILCOUNT
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