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73561cc75a
Various fixes, cleanups and shrinkage: saves 952 Bytes: text data bss dec hex filename 1087742 15853 790632 1894227 1ce753 ../busybox/busybox.old 1086790 15853 790632 1893275 1ce39b busybox via: # scripts/bloat-o-meter ../busybox/busybox_unstripped.old busybox_unstripped function old new delta ipcrm_main 756 822 +66 getval - 61 +61 maybe_set_utc - 40 +40 udhcpc_main 2896 2912 +16 md5_hash_block 428 437 +9 opt 8 16 +8 qgravechar 106 110 +4 make_bitmap 292 295 +3 inflate_unzip 2056 2059 +3 add_partition 1412 1414 +2 __parsespent 156 158 +2 qrealloc 41 42 +1 format - 1 +1 catv_main 313 314 +1 watch_main 293 292 -1 varunset 81 80 -1 part 1 - -1 check_if_skip 837 836 -1 start_stop_daemon_main 840 837 -3 create_lost_and_found 175 172 -3 supress_non_delimited_lines 4 - -4 static.l 4 - -4 static.c 5 1 -4 bsd_sum_file 237 233 -4 eval2 338 332 -6 arithmetic_common 166 158 -8 cmpfunc 22 5 -17 cksum_main 294 275 -19 cmp_main 465 439 -26 dd_main 1535 1508 -27 rmmod_main 376 333 -43 cut_file 727 644 -83 ipcs_main 3809 3721 -88 cut_main 722 614 -108 date_main 1443 1263 -180 remove_ids 222 - -222 ------------------------------------------------------------------------------ (add/remove: 3/4 grow/shrink: 11/18 up/down: 217/-853) Total: -636 bytes
70 lines
1.4 KiB
C
70 lines
1.4 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 "busybox.h"
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int catv_main(int argc, char **argv)
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{
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int retval = EXIT_SUCCESS, fd;
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unsigned long flags;
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flags = bb_getopt_ulflags(argc, 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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do {
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/* Read from stdin if there's nothing else to do. */
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fd = 0;
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if (*argv && 0 > (fd = xopen(*argv, O_RDONLY)))
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retval = EXIT_FAILURE;
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else for (;;) {
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int i, res;
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res = read(fd, bb_common_bufsiz1, sizeof(bb_common_bufsiz1));
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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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char c = bb_common_bufsiz1[i];
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if (c > 126 && (flags & CATV_OPT_v)) {
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if (c == 127) {
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bb_printf("^?");
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continue;
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} else {
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bb_printf("M-");
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c -= 128;
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}
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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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putchar('$');
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} else if (flags & (c==9 ? CATV_OPT_t : CATV_OPT_v)) {
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bb_printf("^%c", c+'@');
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continue;
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}
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}
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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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return retval;
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}
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