+/* vi: set sw=4 ts=4: */
/*
* Mini date implementation for busybox
*
*/
#include "internal.h"
+#define BB_DECLARE_EXTERN
+#define bb_need_invalid_date
+#define bb_need_memory_exhausted
+#include "messages.c"
#include <stdlib.h>
#include <errno.h>
#include <sys/time.h>
#include <unistd.h>
#include <time.h>
#include <stdio.h>
+#include <getopt.h>
/* This 'date' command supports only 2 time setting formats,
an RFC 822 complient date output for shell scripting
mail commands */
-static const char date_usage[] = "date [OPTION]... [+FORMAT]\n"
-" or: date [OPTION] [MMDDhhmm[[CC]YY][.ss]]\n"
-"Display the current time in the given FORMAT, or set the system date.\n"
-"\nOptions:\n\t-R\t\toutput RFC-822 compliant date string\n"
-"\t-s\t\tset time described by STRING\n"
-"\t-u\t\tprint or set Coordinated Universal Time\n";
-
-
/* Input parsing code is always bulky - used heavy duty libc stuff as
much as possible, missed out a lot of bounds checking */
/* Default input handling to save suprising some people */
-struct tm *
-date_conv_time(struct tm *tm_time, const char *t_string) {
- int nr;
-
- nr = sscanf(t_string, "%2d%2d%2d%2d%d",
- &(tm_time->tm_mon),
- &(tm_time->tm_mday),
- &(tm_time->tm_hour),
- &(tm_time->tm_min),
- &(tm_time->tm_year));
-
- if(nr < 4 || nr > 5) {
- fprintf(stderr, "date: invalid date `%s'\n", t_string);
- exit( FALSE);
- }
-
- /* correct for century - minor Y2K problem here? */
- if(tm_time->tm_year >= 1900)
- tm_time->tm_year -= 1900;
- /* adjust date */
- tm_time->tm_mon -= 1;
-
- return(tm_time);
+struct tm *date_conv_time(struct tm *tm_time, const char *t_string)
+{
+ int nr;
+
+ nr = sscanf(t_string, "%2d%2d%2d%2d%d",
+ &(tm_time->tm_mon),
+ &(tm_time->tm_mday),
+ &(tm_time->tm_hour),
+ &(tm_time->tm_min), &(tm_time->tm_year));
+
+ if (nr < 4 || nr > 5) {
+ fatalError(invalid_date, t_string);
+ }
+
+ /* correct for century - minor Y2K problem here? */
+ if (tm_time->tm_year >= 1900)
+ tm_time->tm_year -= 1900;
+ /* adjust date */
+ tm_time->tm_mon -= 1;
+
+ return (tm_time);
}
/* The new stuff for LRP */
-struct tm *
-date_conv_ftime(struct tm *tm_time, const char *t_string) {
- struct tm itm_time, jtm_time, ktm_time, \
- ltm_time, mtm_time, ntm_time;
-
- itm_time = *tm_time;
- jtm_time = *tm_time;
- ktm_time = *tm_time;
- ltm_time = *tm_time;
- mtm_time = *tm_time;
- ntm_time = *tm_time;
-
- /* Parse input and assign appropriately to tm_time */
-
- if(sscanf(t_string, "%d:%d:%d",
- &itm_time.tm_hour,
- &itm_time.tm_min,
- &itm_time.tm_sec) == 3 ) {
-
- *tm_time = itm_time;
- return(tm_time);
-
- } else if (sscanf(t_string, "%d:%d",
- &jtm_time.tm_hour,
- &jtm_time.tm_min) == 2) {
-
- *tm_time = jtm_time;
- return(tm_time);
-
- } else if (sscanf(t_string, "%d.%d-%d:%d:%d",
- &ktm_time.tm_mon,
- &ktm_time.tm_mday,
- &ktm_time.tm_hour,
- &ktm_time.tm_min,
- &ktm_time.tm_sec) == 5) {
-
- ktm_time.tm_mon -= 1; /* Adjust dates from 1-12 to 0-11 */
- *tm_time = ktm_time;
- return(tm_time);
-
- } else if (sscanf(t_string, "%d.%d-%d:%d",
- <m_time.tm_mon,
- <m_time.tm_mday,
- <m_time.tm_hour,
- <m_time.tm_min) == 4) {
-
- ltm_time.tm_mon -= 1; /* Adjust dates from 1-12 to 0-11 */
- *tm_time = ltm_time;
- return(tm_time);
-
- } else if (sscanf(t_string, "%d.%d.%d-%d:%d:%d",
- &mtm_time.tm_year,
- &mtm_time.tm_mon,
- &mtm_time.tm_mday,
- &mtm_time.tm_hour,
- &mtm_time.tm_min,
- &mtm_time.tm_sec) == 6) {
-
- mtm_time.tm_year -= 1900; /* Adjust years */
- mtm_time.tm_mon -= 1; /* Adjust dates from 1-12 to 0-11 */
- *tm_time = mtm_time;
- return(tm_time);
-
- } else if (sscanf(t_string, "%d.%d.%d-%d:%d",
- &ntm_time.tm_year,
- &ntm_time.tm_mon,
- &ntm_time.tm_mday,
- &ntm_time.tm_hour,
- &ntm_time.tm_min) == 5) {
- ntm_time.tm_year -= 1900; /* Adjust years */
- ntm_time.tm_mon -= 1; /* Adjust dates from 1-12 to 0-11 */
- *tm_time = ntm_time;
- return(tm_time);
-
- }
-
- fprintf(stderr, "date: invalid date `%s'\n", t_string);
-
- exit( FALSE);
+struct tm *date_conv_ftime(struct tm *tm_time, const char *t_string)
+{
+ struct tm itm_time, jtm_time, ktm_time, ltm_time, mtm_time, ntm_time;
+
+ itm_time = *tm_time;
+ jtm_time = *tm_time;
+ ktm_time = *tm_time;
+ ltm_time = *tm_time;
+ mtm_time = *tm_time;
+ ntm_time = *tm_time;
+
+ /* Parse input and assign appropriately to tm_time */
+
+ if (sscanf(t_string, "%d:%d:%d",
+ &itm_time.tm_hour, &itm_time.tm_min, &itm_time.tm_sec) == 3) {
+
+ *tm_time = itm_time;
+ return (tm_time);
+
+ } else if (sscanf(t_string, "%d:%d",
+ &jtm_time.tm_hour, &jtm_time.tm_min) == 2) {
+
+ *tm_time = jtm_time;
+ return (tm_time);
+
+ } else if (sscanf(t_string, "%d.%d-%d:%d:%d",
+ &ktm_time.tm_mon,
+ &ktm_time.tm_mday,
+ &ktm_time.tm_hour,
+ &ktm_time.tm_min, &ktm_time.tm_sec) == 5) {
+
+ ktm_time.tm_mon -= 1; /* Adjust dates from 1-12 to 0-11 */
+ *tm_time = ktm_time;
+ return (tm_time);
+
+ } else if (sscanf(t_string, "%d.%d-%d:%d",
+ <m_time.tm_mon,
+ <m_time.tm_mday,
+ <m_time.tm_hour, <m_time.tm_min) == 4) {
+
+ ltm_time.tm_mon -= 1; /* Adjust dates from 1-12 to 0-11 */
+ *tm_time = ltm_time;
+ return (tm_time);
+
+ } else if (sscanf(t_string, "%d.%d.%d-%d:%d:%d",
+ &mtm_time.tm_year,
+ &mtm_time.tm_mon,
+ &mtm_time.tm_mday,
+ &mtm_time.tm_hour,
+ &mtm_time.tm_min, &mtm_time.tm_sec) == 6) {
+
+ mtm_time.tm_year -= 1900; /* Adjust years */
+ mtm_time.tm_mon -= 1; /* Adjust dates from 1-12 to 0-11 */
+ *tm_time = mtm_time;
+ return (tm_time);
+
+ } else if (sscanf(t_string, "%d.%d.%d-%d:%d",
+ &ntm_time.tm_year,
+ &ntm_time.tm_mon,
+ &ntm_time.tm_mday,
+ &ntm_time.tm_hour, &ntm_time.tm_min) == 5) {
+ ntm_time.tm_year -= 1900; /* Adjust years */
+ ntm_time.tm_mon -= 1; /* Adjust dates from 1-12 to 0-11 */
+ *tm_time = ntm_time;
+ return (tm_time);
+
+ }
+ fatalError(invalid_date, t_string);
}
-int
-date_main(int argc, char * * argv)
+int date_main(int argc, char **argv)
{
- char *date_str = NULL;
- char *date_fmt = NULL;
- char *t_buff;
- int i;
- int set_time = 0;
- int rfc822 = 0;
- int utc = 0;
- int use_arg = 0;
- time_t tm;
- struct tm tm_time;
-
- /* Interpret command line args */
- i = --argc;
- argv++;
- while (i > 0 && **argv) {
- if (**argv == '-') {
- while (i>0 && *++(*argv)) switch (**argv) {
- case 'R':
- rfc822 = 1;
- break;
- case 's':
- set_time = 1;
- if(date_str != NULL) usage ( date_usage);
- date_str = optarg;
- break;
- case 'u':
- utc = 1;
- if (putenv ("TZ=UTC0") != 0) {
- fprintf(stderr,"date: memory exhausted\n");
- exit( FALSE);
+ char *date_str = NULL;
+ char *date_fmt = NULL;
+ char *t_buff;
+ int c;
+ int set_time = 0;
+ int rfc822 = 0;
+ int utc = 0;
+ int use_arg = 0;
+ time_t tm;
+ struct tm tm_time;
+
+ /* Interpret command line args */
+ while ((c = getopt(argc, argv, "Rs:ud:")) != EOF) {
+ switch (c) {
+ case 'R':
+ rfc822 = 1;
+ break;
+ case 's':
+ set_time = 1;
+ if ((date_str != NULL) || ((date_str = optarg) == NULL))
+ usage(date_usage);
+ break;
+ case 'u':
+ utc = 1;
+ if (putenv("TZ=UTC0") != 0)
+ fatalError(memory_exhausted);
+ break;
+ case 'd':
+ use_arg = 1;
+ if ((date_str != NULL) || ((date_str = optarg) == NULL))
+ usage(date_usage);
+ break;
+ default:
+ usage(date_usage);
}
- /* Look ma, no break. Don't fix it either. */
- case 'd':
- use_arg = 1;
- if(date_str != NULL) usage ( date_usage);
- date_str = optarg;
- break;
- case '-':
- usage ( date_usage);
- }
- } else {
- if ( (date_fmt == NULL) && (strcmp(*argv, "+")==0) )
- date_fmt=*argv;
- else if (date_str == NULL) {
+ }
+
+ if ((date_fmt == NULL) && (optind < argc) && (argv[optind][0] == '+'))
+ date_fmt = &argv[optind][1]; /* Skip over the '+' */
+ else if (date_str == NULL) {
set_time = 1;
- date_str=*argv;
- } else {
- usage ( date_usage);
- }
+ date_str = argv[optind];
+ } else {
+ usage(date_usage);
}
- i--;
- argv++;
- }
-
-
- /* Now we have parsed all the information except the date format
- which depends on whether the clock is being set or read */
-
- time(&tm);
- memcpy(&tm_time, localtime(&tm), sizeof(tm_time));
- /* Zero out fields - take her back to midnight!*/
- if(date_str != NULL) {
- tm_time.tm_sec = 0;
- tm_time.tm_min = 0;
- tm_time.tm_hour = 0;
- }
-
- /* Process any date input to UNIX time since 1 Jan 1970 */
- if(date_str != NULL) {
-
- if(strchr(date_str, ':') != NULL) {
- date_conv_ftime(&tm_time, date_str);
- } else {
- date_conv_time(&tm_time, date_str);
- }
-
- /* Correct any day of week and day of year etc fields */
- tm = mktime(&tm_time);
- if (tm < 0 ) {
- fprintf(stderr, "date: invalid date `%s'\n", date_str);
- exit( FALSE);
- }
-
- /* if setting time, set it */
- if(set_time) {
- if( stime(&tm) < 0) {
- fprintf(stderr, "date: can't set date.\n");
- exit( FALSE);
- }
- }
- }
-
- /* Display output */
-
- /* Deal with format string */
- if(date_fmt == NULL) {
- date_fmt = (rfc822
- ? (utc
- ? "%a, %_d %b %Y %H:%M:%S GMT"
- : "%a, %_d %b %Y %H:%M:%S %z")
- : "%a %b %e %H:%M:%S %Z %Y");
-
- } else if ( *date_fmt == '\0' ) {
- /* Imitate what GNU 'date' does with NO format string! */
- printf ("\n");
- exit( TRUE);
- }
-
- /* Handle special conversions */
-
- if( strncmp( date_fmt, "%f", 2) == 0 ) {
- date_fmt = "%Y.%m.%d-%H:%M:%S";
- }
-
- /* Print OUTPUT (after ALL that!) */
- t_buff = malloc(201);
- strftime(t_buff, 200, date_fmt, &tm_time);
- printf("%s\n", t_buff);
-
- exit( TRUE);
-}
+ /* Now we have parsed all the information except the date format
+ which depends on whether the clock is being set or read */
+ time(&tm);
+ memcpy(&tm_time, localtime(&tm), sizeof(tm_time));
+ /* Zero out fields - take her back to midnight! */
+ if (date_str != NULL) {
+ tm_time.tm_sec = 0;
+ tm_time.tm_min = 0;
+ tm_time.tm_hour = 0;
+ }
+
+ /* Process any date input to UNIX time since 1 Jan 1970 */
+ if (date_str != NULL) {
+
+ if (strchr(date_str, ':') != NULL) {
+ date_conv_ftime(&tm_time, date_str);
+ } else {
+ date_conv_time(&tm_time, date_str);
+ }
+
+ /* Correct any day of week and day of year etc fields */
+ tm = mktime(&tm_time);
+ if (tm < 0)
+ fatalError(invalid_date, date_str);
+
+ /* if setting time, set it */
+ if (set_time) {
+ if (stime(&tm) < 0) {
+ fatalError("can't set date.\n");
+ }
+ }
+ }
+
+ /* Display output */
+
+ /* Deal with format string */
+ if (date_fmt == NULL) {
+ date_fmt = (rfc822
+ ? (utc
+ ? "%a, %_d %b %Y %H:%M:%S GMT"
+ : "%a, %_d %b %Y %H:%M:%S %z")
+ : "%a %b %e %H:%M:%S %Z %Y");
+
+ } else if (*date_fmt == '\0') {
+ /* Imitate what GNU 'date' does with NO format string! */
+ printf("\n");
+ exit(TRUE);
+ }
+
+ /* Handle special conversions */
+
+ if (strncmp(date_fmt, "%f", 2) == 0) {
+ date_fmt = "%Y.%m.%d-%H:%M:%S";
+ }
+
+ /* Print OUTPUT (after ALL that!) */
+ t_buff = xmalloc(201);
+ strftime(t_buff, 200, date_fmt, &tm_time);
+ printf("%s\n", t_buff);
+
+ return(TRUE);
+}
projects / oweals / busybox.git / blobdiff