| /* vi: set sw=4 ts=4: */ |
| /* |
| * Copyright (C) 2019 Denys Vlasenko <vda.linux@googlemail.com> |
| * Licensed under GPLv2, see file LICENSE in this source tree. |
| */ |
| //config:config TS |
| //config: bool "ts (450 bytes)" |
| //config: default y |
| |
| //applet:IF_TS(APPLET(ts, BB_DIR_USR_BIN, BB_SUID_DROP)) |
| |
| //kbuild:lib-$(CONFIG_TS) += ts.o |
| |
| //usage:#define ts_trivial_usage |
| //usage: "[-is] [STRFTIME]" |
| //usage:#define ts_full_usage "\n\n" |
| //usage: "Pipe stdin to stdout, add timestamp to each line\n" |
| //usage: "\n -s Time since start" |
| //usage: "\n -i Time since previous line" |
| |
| #include "libbb.h" |
| #include "common_bufsiz.h" |
| |
| int ts_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
| int ts_main(int argc UNUSED_PARAM, char **argv) |
| { |
| struct timeval base; |
| unsigned opt; |
| char *frac; |
| char *fmt_dt2str; |
| char *line; |
| |
| opt = getopt32(argv, "^" "is" "\0" "?1" /*max one arg*/); |
| if (opt) { |
| putenv((char*)"TZ=UTC0"); |
| tzset(); |
| } |
| /*argc -= optind;*/ |
| argv += optind; |
| fmt_dt2str = argv[0] ? argv[0] |
| : (char*)(opt ? "%b %d %H:%M:%S"+6 : "%b %d %H:%M:%S"); |
| frac = is_suffixed_with(fmt_dt2str, "%.S"); |
| if (!frac) |
| frac = is_suffixed_with(fmt_dt2str, "%.s"); |
| if (frac) { |
| frac++; |
| frac[0] = frac[1]; |
| frac[1] = '\0'; |
| } |
| |
| #define date_buf bb_common_bufsiz1 |
| setup_common_bufsiz(); |
| xgettimeofday(&base); |
| |
| while ((line = xmalloc_fgets(stdin)) != NULL) { |
| struct timeval ts; |
| struct tm tm_time; |
| |
| xgettimeofday(&ts); |
| if (opt) { |
| /* -i and/or -s */ |
| struct timeval ts1 = ts1; |
| if (opt & 1) /* -i */ |
| ts1 = ts; |
| //printf("%d %d\n", ts.tv_sec, base.tv_sec); |
| ts.tv_sec -= base.tv_sec; |
| //printf("%d %d\n", ts.tv_sec, base.tv_sec); |
| ts.tv_usec -= base.tv_usec; |
| if ((int32_t)(ts.tv_usec) < 0) { |
| ts.tv_sec--; |
| ts.tv_usec += 1000*1000; |
| } |
| if (opt & 1) /* -i */ |
| base = ts1; |
| } |
| localtime_r(&ts.tv_sec, &tm_time); |
| strftime(date_buf, COMMON_BUFSIZE, fmt_dt2str, &tm_time); |
| if (!frac) { |
| printf("%s %s", date_buf, line); |
| } else { |
| printf("%s.%06u %s", date_buf, (unsigned)ts.tv_usec, line); |
| } |
| free(line); |
| } |
| |
| return EXIT_SUCCESS; |
| } |