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-rw-r--r--coreutils/date.c260
1 files changed, 123 insertions, 137 deletions
diff --git a/coreutils/date.c b/coreutils/date.c
index f08392ec2..2a82e0413 100644
--- a/coreutils/date.c
+++ b/coreutils/date.c
@@ -5,14 +5,17 @@
* by Matthew Grant <grantma@anathoth.gen.nz>
*
* iso-format handling added by Robert Griebl <griebl@gmx.de>
+ * bugfixes and cleanup by Bernhard Fischer
*
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
+#include "busybox.h"
+
/* This 'date' command supports only 2 time setting formats,
all the GNU strftime stuff (its in libc, lets use it),
- setting time using UTC and displaying int, as well as
- an RFC 822 complient date output for shell scripting
+ setting time using UTC and displaying it, as well as
+ an RFC 2822 compliant date output for shell scripting
mail commands */
/* Input parsing code is always bulky - used heavy duty libc stuff as
@@ -20,13 +23,6 @@
/* Default input handling to save surprising some people */
-#include <stdlib.h>
-#include <errno.h>
-#include <unistd.h>
-#include <time.h>
-#include <stdio.h>
-#include <string.h>
-#include "busybox.h"
#define DATE_OPT_RFC2822 0x01
#define DATE_OPT_SET 0x02
@@ -36,119 +32,45 @@
#define DATE_OPT_TIMESPEC 0x20
#define DATE_OPT_HINT 0x40
-
-static struct tm *date_conv_time(struct tm *tm_time, const char *t_string)
-{
- int nr;
- char *cp;
-
- 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) {
- bb_error_msg_and_die(bb_msg_invalid_date, t_string);
- }
-
- cp = strchr(t_string, '.');
- if (cp) {
- nr = sscanf(cp + 1, "%2d", &(tm_time->tm_sec));
- if (nr != 1) {
- bb_error_msg_and_die(bb_msg_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 */
-
-static struct tm *date_conv_ftime(struct tm *tm_time, const char *t_string)
+static void maybe_set_utc(int opt)
{
- struct tm t;
-
- /* Parse input and assign appropriately to tm_time */
-
- if (t = *tm_time, sscanf(t_string, "%d:%d:%d", &t.tm_hour, &t.tm_min,
- &t.tm_sec) == 3) {
- /* no adjustments needed */
- } else if (t = *tm_time, sscanf(t_string, "%d:%d", &t.tm_hour,
- &t.tm_min) == 2) {
- /* no adjustments needed */
- } else if (t = *tm_time, sscanf(t_string, "%d.%d-%d:%d:%d", &t.tm_mon,
- &t.tm_mday, &t.tm_hour,
- &t.tm_min, &t.tm_sec) == 5) {
- /* Adjust dates from 1-12 to 0-11 */
- t.tm_mon -= 1;
- } else if (t = *tm_time, sscanf(t_string, "%d.%d-%d:%d", &t.tm_mon,
- &t.tm_mday,
- &t.tm_hour, &t.tm_min) == 4) {
- /* Adjust dates from 1-12 to 0-11 */
- t.tm_mon -= 1;
- } else if (t = *tm_time, sscanf(t_string, "%d.%d.%d-%d:%d:%d", &t.tm_year,
- &t.tm_mon, &t.tm_mday,
- &t.tm_hour, &t.tm_min,
- &t.tm_sec) == 6) {
- t.tm_year -= 1900; /* Adjust years */
- t.tm_mon -= 1; /* Adjust dates from 1-12 to 0-11 */
- } else if (t = *tm_time, sscanf(t_string, "%d.%d.%d-%d:%d", &t.tm_year,
- &t.tm_mon, &t.tm_mday,
- &t.tm_hour, &t.tm_min) == 5) {
- t.tm_year -= 1900; /* Adjust years */
- t.tm_mon -= 1; /* Adjust dates from 1-12 to 0-11 */
- } else {
- bb_error_msg_and_die(bb_msg_invalid_date, t_string);
- }
- *tm_time = t;
- return (tm_time);
+ if ((opt & DATE_OPT_UTC) && putenv("TZ=UTC0") != 0)
+ bb_error_msg_and_die(bb_msg_memory_exhausted);
}
int date_main(int argc, char **argv)
{
- char *date_str = NULL;
- char *date_fmt = NULL;
- int set_time;
- int utc;
time_t tm;
- unsigned long opt;
struct tm tm_time;
+ unsigned long opt;
+ int ifmt = -1;
+ char *date_str = NULL;
+ char *date_fmt = NULL;
char *filename = NULL;
-
- int ifmt = 0;
char *isofmt_arg;
char *hintfmt_arg;
- bb_opt_complementally = "?:d--s:s--d";
+ bb_opt_complementally = "?:d--s:s--d"
+ USE_FEATURE_DATE_ISOFMT(":R--I:I--R");
opt = bb_getopt_ulflags(argc, argv, "Rs:ud:r:"
- USE_FEATURE_DATE_ISOFMT("I::D:"),
+ USE_FEATURE_DATE_ISOFMT("I::D:"),
&date_str, &date_str, &filename
USE_FEATURE_DATE_ISOFMT(, &isofmt_arg, &hintfmt_arg));
- set_time = opt & DATE_OPT_SET;
- utc = opt & DATE_OPT_UTC;
- if (utc && putenv("TZ=UTC0") != 0) {
- bb_error_msg_and_die(bb_msg_memory_exhausted);
- }
+ maybe_set_utc(opt);
- if(ENABLE_FEATURE_DATE_ISOFMT && (opt & DATE_OPT_TIMESPEC)) {
+ if (ENABLE_FEATURE_DATE_ISOFMT && (opt & DATE_OPT_TIMESPEC)) {
if (!isofmt_arg) {
- ifmt = 1;
+ ifmt = 0; /* default is date */
} else {
- char *isoformats[]={"date","hours","minutes","seconds"};
- for(ifmt = 4; ifmt;)
- if(!strcmp(isofmt_arg,isoformats[--ifmt]))
+ const char * const isoformats[] =
+ {"date", "hours", "minutes", "seconds"};
+
+ for (ifmt = 0; ifmt < 4; ifmt++)
+ if (!strcmp(isofmt_arg, isoformats[ifmt])) {
break;
- }
- if (!ifmt) {
- bb_show_usage();
+ }
+ if (ifmt == 4) /* parse error */
+ bb_show_usage();
}
}
@@ -156,18 +78,19 @@ int date_main(int argc, char **argv)
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;
+ opt |= DATE_OPT_SET;
date_str = argv[optind];
}
/* Now we have parsed all the information except the date format
which depends on whether the clock is being set or read */
- if(filename) {
+ if (filename) {
struct stat statbuf;
- xstat(filename,&statbuf);
- tm=statbuf.st_mtime;
- } else time(&tm);
+ xstat(filename, &statbuf);
+ tm = statbuf.st_mtime;
+ } else
+ time(&tm);
memcpy(&tm_time, localtime(&tm), sizeof(tm_time));
/* Zero out fields - take her back to midnight! */
if (date_str != NULL) {
@@ -179,9 +102,64 @@ int date_main(int argc, char **argv)
if (ENABLE_FEATURE_DATE_ISOFMT && (opt & DATE_OPT_HINT)) {
strptime(date_str, hintfmt_arg, &tm_time);
} else if (strchr(date_str, ':') != NULL) {
- date_conv_ftime(&tm_time, date_str);
+ /* Parse input and assign appropriately to tm_time */
+
+ if (sscanf(date_str, "%d:%d:%d", &tm_time.tm_hour, &tm_time.tm_min,
+ &tm_time.tm_sec) == 3) {
+ /* no adjustments needed */
+ } else if (sscanf(date_str, "%d:%d", &tm_time.tm_hour,
+ &tm_time.tm_min) == 2) {
+ /* no adjustments needed */
+ } else if (sscanf(date_str, "%d.%d-%d:%d:%d", &tm_time.tm_mon,
+ &tm_time.tm_mday, &tm_time.tm_hour,
+ &tm_time.tm_min, &tm_time.tm_sec) == 5) {
+ /* Adjust dates from 1-12 to 0-11 */
+ tm_time.tm_mon -= 1;
+ } else if (sscanf(date_str, "%d.%d-%d:%d", &tm_time.tm_mon,
+ &tm_time.tm_mday,
+ &tm_time.tm_hour, &tm_time.tm_min) == 4) {
+ /* Adjust dates from 1-12 to 0-11 */
+ tm_time.tm_mon -= 1;
+ } else if (sscanf(date_str, "%d.%d.%d-%d:%d:%d", &tm_time.tm_year,
+ &tm_time.tm_mon, &tm_time.tm_mday,
+ &tm_time.tm_hour, &tm_time.tm_min,
+ &tm_time.tm_sec) == 6) {
+ tm_time.tm_year -= 1900; /* Adjust years */
+ tm_time.tm_mon -= 1; /* Adjust dates from 1-12 to 0-11 */
+ } else if (sscanf(date_str, "%d.%d.%d-%d:%d", &tm_time.tm_year,
+ &tm_time.tm_mon, &tm_time.tm_mday,
+ &tm_time.tm_hour, &tm_time.tm_min) == 5) {
+ tm_time.tm_year -= 1900; /* Adjust years */
+ tm_time.tm_mon -= 1; /* Adjust dates from 1-12 to 0-11 */
+ } else {
+ bb_error_msg_and_die(bb_msg_invalid_date, date_str);
+ }
} else {
- date_conv_time(&tm_time, date_str);
+ int nr;
+ char *cp;
+
+ nr = sscanf(date_str, "%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) {
+ bb_error_msg_and_die(bb_msg_invalid_date, date_str);
+ }
+
+ cp = strchr(date_str, '.');
+ if (cp) {
+ nr = sscanf(cp + 1, "%2d", &tm_time.tm_sec);
+ if (nr != 1) {
+ bb_error_msg_and_die(bb_msg_invalid_date, date_str);
+ }
+ }
+
+ /* 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;
}
/* Correct any day of week and day of year etc. fields */
@@ -190,12 +168,10 @@ int date_main(int argc, char **argv)
if (tm < 0) {
bb_error_msg_and_die(bb_msg_invalid_date, date_str);
}
- if (utc && putenv("TZ=UTC0") != 0) {
- bb_error_msg_and_die(bb_msg_memory_exhausted);
- }
+ maybe_set_utc(opt);
/* if setting time, set it */
- if (set_time && stime(&tm) < 0) {
+ if ((opt & DATE_OPT_SET) && stime(&tm) < 0) {
bb_perror_msg("cannot set date");
}
}
@@ -203,33 +179,43 @@ int date_main(int argc, char **argv)
/* Display output */
/* Deal with format string */
+
if (date_fmt == NULL) {
- /* Start with the default case */
-
- date_fmt = (opt & DATE_OPT_RFC2822 ?
- (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");
-
- if (ENABLE_FEATURE_DATE_ISOFMT) {
- if (ifmt == 4)
- date_fmt = utc ? "%Y-%m-%dT%H:%M:%SZ" : "%Y-%m-%dT%H:%M:%S%z";
- else if (ifmt == 3)
- date_fmt = utc ? "%Y-%m-%dT%H:%MZ" : "%Y-%m-%dT%H:%M%z";
- else if (ifmt == 2)
- date_fmt = utc ? "%Y-%m-%dT%HZ" : "%Y-%m-%dT%H%z";
- else if (ifmt == 1)
- date_fmt = "%Y-%m-%d";
- }
+ int i;
+ date_fmt = xzalloc(32);
+ if (ENABLE_FEATURE_DATE_ISOFMT && ifmt >= 0) {
+ strcpy(date_fmt, "%Y-%m-%d");
+ if (ifmt > 0) {
+ i = 8;
+ date_fmt[i++] = 'T';
+ date_fmt[i++] = '%';
+ date_fmt[i++] = 'H';
+ if (ifmt > 1) {
+ date_fmt[i++] = ':';
+ date_fmt[i++] = '%';
+ date_fmt[i++] = 'M';
+ }
+ if (ifmt > 2) {
+ date_fmt[i++] = ':';
+ date_fmt[i++] = '%';
+ date_fmt[i++] = 'S';
+ }
+format_utc:
+ date_fmt[i++] = '%';
+ date_fmt[i] = (opt & DATE_OPT_UTC) ? 'Z' : 'z';
+ }
+ } else if (opt & DATE_OPT_RFC2822) {
+ strcpy(date_fmt, "%a, %d %b %Y %H:%M:%S ");
+ i = 22;
+ goto format_utc;
+ } else /* default case */
+ date_fmt = "%a %b %e %H:%M:%S %Z %Y";
}
-
- if (*date_fmt == '\0') {
+ if (*date_fmt == '\0') {
/* With no format string, just print a blank line */
-
- *bb_common_bufsiz1=0;
+ *bb_common_bufsiz1 = 0;
} else {
-
/* Handle special conversions */
if (strncmp(date_fmt, "%f", 2) == 0) {
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-22 14:53:32 +0000