Commit | Line | Data |
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707b2f79 SK |
1 | #include <assert.h> |
2 | #include <ctype.h> | |
8345f2b3 | 3 | #include <errno.h> |
707b2f79 SK |
4 | #include <fcntl.h> |
5 | #include <signal.h> | |
8345f2b3 SK |
6 | #include <stdio.h> |
7 | #include <stdlib.h> | |
8 | #include <string.h> | |
9 | #include <time.h> | |
10 | #include <unistd.h> | |
11 | ||
12 | #include "khatus_lib_log.h" | |
55883d9a | 13 | #include "khatus_lib_sensor.h" |
8345f2b3 SK |
14 | #include "khatus_lib_time.h" |
15 | ||
707b2f79 SK |
16 | #define usage(...) {print_usage(); fprintf(stderr, "Error:\n " __VA_ARGS__); exit(EXIT_FAILURE);} |
17 | ||
18 | #define MAX_LEN 20 | |
19 | #define END_OF_MESSAGE '\n' | |
20 | ||
f1eff928 SK |
21 | char *argv0 = NULL; |
22 | ||
23 | double opt_interval = 1.0; | |
24 | char *opt_fmt = "%a %b %d %H:%M:%S"; | |
25 | char *fifo_name = NULL; | |
8345f2b3 SK |
26 | |
27 | void | |
707b2f79 | 28 | print_usage() |
8345f2b3 SK |
29 | { |
30 | printf( | |
707b2f79 | 31 | "%s: [OPT ...] FIFO\n" |
8345f2b3 | 32 | "\n" |
707b2f79 | 33 | "FIFO = string # path to fifo file\n" |
8345f2b3 SK |
34 | "OPT = -i int # interval\n" |
35 | " | -f string # format string\n" | |
36 | " | -h # help message (i.e. what you're reading now :) )\n", | |
37 | argv0); | |
8345f2b3 SK |
38 | } |
39 | ||
f1eff928 SK |
40 | void |
41 | opt_parse(int argc, char **argv) | |
8345f2b3 | 42 | { |
8345f2b3 SK |
43 | char c; |
44 | ||
8345f2b3 SK |
45 | while ((c = getopt(argc, argv, "f:i:h")) != -1) |
46 | switch (c) { | |
47 | case 'f': | |
48 | opt_fmt = calloc(strlen(optarg), sizeof(char)); | |
49 | strcpy(opt_fmt, optarg); | |
50 | break; | |
51 | case 'i': | |
52 | opt_interval = atof(optarg); | |
53 | break; | |
54 | case 'h': | |
707b2f79 | 55 | print_usage(); |
f1eff928 | 56 | exit(EXIT_SUCCESS); |
707b2f79 SK |
57 | case '?': |
58 | if (optopt == 'f' || optopt == 'i') | |
59 | fprintf(stderr, | |
60 | "Option -%c requires an argument.\n", | |
61 | optopt); | |
62 | else if (isprint(optopt)) | |
63 | fprintf (stderr, | |
64 | "Unknown option `-%c'.\n", | |
65 | optopt); | |
66 | else | |
67 | fprintf(stderr, | |
68 | "Unknown option character `\\x%x'.\n", | |
69 | optopt); | |
f1eff928 | 70 | exit(EXIT_FAILURE); |
8345f2b3 | 71 | default: |
707b2f79 | 72 | assert(0); |
8345f2b3 | 73 | } |
707b2f79 SK |
74 | fifo_name = argv[optind]; |
75 | debug("fifo_name: %s\n", fifo_name); | |
76 | if (!fifo_name) | |
77 | usage("No filename was provided\n"); | |
f1eff928 SK |
78 | } |
79 | ||
55883d9a | 80 | int |
fa2a9b44 | 81 | get_time(char *buf, char *fmt) |
55883d9a SK |
82 | { |
83 | time_t t; | |
84 | ||
85 | t = time(NULL); | |
fa2a9b44 | 86 | strftime(buf, MAX_LEN, fmt, localtime(&t)); |
55883d9a SK |
87 | return strlen(buf); |
88 | } | |
89 | ||
f1eff928 SK |
90 | int |
91 | main(int argc, char **argv) | |
92 | { | |
93 | argv0 = argv[0]; | |
94 | ||
f1eff928 SK |
95 | struct timespec ti; |
96 | char buf[MAX_LEN]; | |
97 | ||
f1eff928 SK |
98 | opt_parse(argc, argv); |
99 | ||
55883d9a | 100 | signal(SIGPIPE, SIG_IGN); /* Handled in loop */ |
f1eff928 SK |
101 | |
102 | memset(buf, '\0', MAX_LEN); | |
8345f2b3 | 103 | ti = timespec_of_float(opt_interval); |
fa2a9b44 SK |
104 | loop( |
105 | &ti, | |
106 | fifo_name, | |
107 | buf, | |
108 | (SENSOR_FUN_T) get_time, | |
109 | (SENSOR_PARAMS_T) opt_fmt | |
110 | ); | |
8345f2b3 SK |
111 | return EXIT_SUCCESS; |
112 | } |