diff options
| -rw-r--r-- | procps/watch.c | 52 |
1 files changed, 23 insertions, 29 deletions
diff --git a/procps/watch.c b/procps/watch.c index 76d2a87..b495525 100644 --- a/procps/watch.c +++ b/procps/watch.c @@ -28,46 +28,40 @@ int watch_main(int argc, char **argv) { unsigned opt; unsigned period = 2; - unsigned cmdlen; - char *header = NULL; + int width, new_width; + char *header; char *cmd; - char *tmp; - char **p; - opt_complementary = "-1"; // at least one param please - opt = getopt32(argv, "+dtn:", &tmp); - //if (opt & 0x1) // -d (ignore) - //if (opt & 0x2) // -t - if (opt & 0x4) period = xatou(tmp); + 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; - p = argv; - cmdlen = 1; // 1 for terminal NUL - while (*p) - cmdlen += strlen(*p++) + 1; - tmp = cmd = xmalloc(cmdlen); - while (*argv) { - tmp += sprintf(tmp, " %s", *argv); - argv++; - } - cmd++; // skip initial space + // 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 - int width, len; - char *thyme; + const int time_len = sizeof("1234-67-90 23:56:89"); time_t t; - get_terminal_width_height(STDIN_FILENO, &width, 0); - header = xrealloc(header, width--); - // '%-*s' pads header with spaces to the full width - snprintf(header, width, "Every %ds: %-*s", period, width, cmd); + 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); - thyme = ctime(&t); - len = strlen(thyme); - if (len < width) - strcpy(header + width - len, thyme); + if (time_len < width) + strftime(header + width - time_len, time_len, + "%Y-%m-%d %H:%M:%S", localtime(&t)); + puts(header); } fflush(stdout); |