62a90cdd74
function old new delta lsattr_main 62 143 +81 open_or_warn_stdin - 36 +36 fclose_if_not_stdin 20 47 +27 xfopen_stdin - 20 +20 tac_main 336 356 +20 cksum_main 249 259 +10 bb_argv_dash - 8 +8 su_main 448 455 +7 cmp_main 630 633 +3 passwd_main 1072 1074 +2 uudecode_main 317 315 -2 text_yank 110 108 -2 handle_incoming_and_exit 2653 2651 -2 flags 5 1 -4 write_leases 235 230 -5 fopen_or_warn_stdin 48 42 -6 fold_main 648 642 -6 static.argv_dash 8 - -8 sum_main 142 128 -14 tail_main 1237 1221 -16 sed_main 711 695 -16 cmp_xfopen_input 17 - -17 bb_cat 113 96 -17 catv_main 328 306 -22 strings_main 457 434 -23 hash_file 298 274 -24 sum_file 353 325 -28 sort_main 904 859 -45 expand_main 736 686 -50 cut_main 1116 1065 -51 md5_sha1_sum_main 549 493 -56 lsattr_args 90 - -90 read_stduu 408 255 -153 ------------------------------------------------------------------------------ (add/remove: 3/3 grow/shrink: 7/20 up/down: 214/-657) Total: -443 bytes text data bss dec hex filename 797417 658 7428 805503 c4a7f busybox_old 796973 658 7428 805059 c48c3 busybox_unstripped
76 lines
1.5 KiB
C
76 lines
1.5 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* cat -v implementation for busybox
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*
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* Copyright (C) 2006 Rob Landley <rob@landley.net>
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*
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* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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*/
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/* See "Cat -v considered harmful" at
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* http://cm.bell-labs.com/cm/cs/doc/84/kp.ps.gz */
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#include "libbb.h"
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int catv_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int catv_main(int argc ATTRIBUTE_UNUSED, char **argv)
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{
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int retval = EXIT_SUCCESS;
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int fd;
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unsigned flags;
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flags = getopt32(argv, "etv");
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#define CATV_OPT_e (1<<0)
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#define CATV_OPT_t (1<<1)
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#define CATV_OPT_v (1<<2)
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flags ^= CATV_OPT_v;
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argv += optind;
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/* Read from stdin if there's nothing else to do. */
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if (!argv[0])
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*--argv = (char*)"-";
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do {
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fd = open_or_warn_stdin(*argv);
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if (fd < 0) {
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retval = EXIT_FAILURE;
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continue;
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}
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for (;;) {
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int i, res;
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#define read_buf bb_common_bufsiz1
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res = read(fd, read_buf, COMMON_BUFSIZE);
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if (res < 0)
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retval = EXIT_FAILURE;
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if (res < 1)
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break;
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for (i = 0; i < res; i++) {
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unsigned char c = read_buf[i];
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if (c > 126 && (flags & CATV_OPT_v)) {
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if (c == 127) {
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printf("^?");
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continue;
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}
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printf("M-");
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c -= 128;
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}
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if (c < 32) {
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if (c == 10) {
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if (flags & CATV_OPT_e)
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bb_putchar('$');
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} else if (flags & (c==9 ? CATV_OPT_t : CATV_OPT_v)) {
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printf("^%c", c+'@');
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continue;
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}
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}
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bb_putchar(c);
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}
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}
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if (ENABLE_FEATURE_CLEAN_UP && fd)
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close(fd);
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} while (*++argv);
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fflush_stdout_and_exit(retval);
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}
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