mirror of
https://github.com/sheumann/hush.git
synced 2024-08-17 00:29:03 +00:00
function old new delta procps_scan 1265 1298 +33 aliascmd 278 283 +5 parse_file_cmd 116 120 +4 dname_enc 373 377 +4 setcmd 90 93 +3 execcmd 57 60 +3 count_lines 72 74 +2 process_command_subs 340 339 -1 test_main 409 407 -2 mknod_main 179 177 -2 handle_incoming_and_exit 2653 2651 -2 argstr 1312 1310 -2 shiftcmd 131 128 -3 exitcmd 46 43 -3 dotcmd 297 294 -3 breakcmd 86 83 -3 evalpipe 353 349 -4 evalcommand 1180 1176 -4 evalcmd 109 105 -4 send_tree 374 369 -5 mkfifo_main 82 77 -5 evalsubshell 152 147 -5 typecmd 75 69 -6 letcmd 61 55 -6 add_cmd 1190 1183 -7 main 891 883 -8 ash_main 1415 1407 -8 parse_stream 1377 1367 -10 alloc_procps_scan 55 - -55 ------------------------------------------------------------------------------ (add/remove: 0/1 grow/shrink: 7/21 up/down: 54/-148) Total: -94 bytes text data bss dec hex filename 797195 658 7428 805281 c49a1 busybox_old 797101 658 7428 805187 c4943 busybox_unstripped
76 lines
2.1 KiB
C
76 lines
2.1 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* Mini watch implementation for busybox
|
|
*
|
|
* Copyright (C) 2001 by Michael Habermann <mhabermann@gmx.de>
|
|
* Copyrigjt (C) Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
|
|
*
|
|
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
|
|
*/
|
|
|
|
/* BB_AUDIT SUSv3 N/A */
|
|
/* BB_AUDIT GNU defects -- only option -n is supported. */
|
|
|
|
#include "libbb.h"
|
|
|
|
// procps 2.0.18:
|
|
// watch [-d] [-n seconds]
|
|
// [--differences[=cumulative]] [--interval=seconds] command
|
|
//
|
|
// procps-3.2.3:
|
|
// watch [-dt] [-n seconds]
|
|
// [--differences[=cumulative]] [--interval=seconds] [--no-title] command
|
|
//
|
|
// (procps 3.x and procps 2.x are forks, not newer/older versions of the same)
|
|
|
|
int watch_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
|
int watch_main(int argc ATTRIBUTE_UNUSED, char **argv)
|
|
{
|
|
unsigned opt;
|
|
unsigned period = 2;
|
|
int width, new_width;
|
|
char *header;
|
|
char *cmd;
|
|
|
|
opt_complementary = "-1:n+"; // at least one param; -n NUM
|
|
// "+": stop at first non-option (procps 3.x only)
|
|
opt = getopt32(argv, "+dtn:", &period);
|
|
argv += optind;
|
|
|
|
// watch from both procps 2.x and 3.x does concatenation. Example:
|
|
// watch ls -l "a /tmp" "2>&1" -- ls won't see "a /tmp" as one param
|
|
cmd = *argv;
|
|
while (*++argv)
|
|
cmd = xasprintf("%s %s", cmd, *argv); // leaks cmd
|
|
|
|
width = -1; // make sure first time new_width != width
|
|
header = NULL;
|
|
while (1) {
|
|
printf("\033[H\033[J");
|
|
if (!(opt & 0x2)) { // no -t
|
|
const int time_len = sizeof("1234-67-90 23:56:89");
|
|
time_t t;
|
|
|
|
get_terminal_width_height(STDIN_FILENO, &new_width, NULL);
|
|
if (new_width != width) {
|
|
width = new_width;
|
|
free(header);
|
|
header = xasprintf("Every %us: %-*s", period, width, cmd);
|
|
}
|
|
time(&t);
|
|
if (time_len < width)
|
|
strftime(header + width - time_len, time_len,
|
|
"%Y-%m-%d %H:%M:%S", localtime(&t));
|
|
|
|
puts(header);
|
|
}
|
|
fflush(stdout);
|
|
// TODO: 'real' watch pipes cmd's output to itself
|
|
// and does not allow it to overflow the screen
|
|
// (taking into account linewrap!)
|
|
system(cmd);
|
|
sleep(period);
|
|
}
|
|
return 0; // gcc thinks we can reach this :)
|
|
}
|