Configuration Information [Automatically generated, do not change]:
Machine: i686
OS: linux-gnu
Compiler: gcc
Compilation CFLAGS: -DPROGRAM='bash' -DCONF_HOSTTYPE='i686'
-DCONF_OSTYPE='linux-gnu' -DCONF_MACHTY
PE='i686-pc-linux-gnu' -DCONF_VENDOR='pc' -DLOCALEDIR='/usr/local/share/locale'
-DPACKAGE='bash' -DS
HELL -DHAVE_CONFIG_H -I. -I. -I./include -I./lib -g -O2
uname output: Linux francois 2.6.15 #1 SMP Wed Jan 11 16:27:25 CET 2006 i686
GNU/Linux
Machine Type: i686-pc-linux-gnu
Bash Version: 3.0
Patch Level: 16
Release Status: release
Description:
I'd like to have an internal variable $DATE that could be configured
with $DATEFORMAT.
but DATE=`date +$format` in ~/.bashrc is not optimized.
Repeat-By:
Fix:
patch attached.
Since I'm not a C guru, patch may not be secure or optimized.
Version 3.1 did not compile on my system, I had to work on version 3.0.16.
patch:
--- old/bash-3.0.16/variables.c 2004-09-08 17:07:44.000000000 +0200
+++ new/bash-3.0.16/variables.c 2006-01-23 11:58:30.000000000 +0100
@@ -163,6 +163,10 @@
static SHELL_VAR *init_dynamic_array_var __P((char *, sh_var_value_func_t *,
sh_var_assign_func_t *
, int));
#endif
+static SHELL_VAR *get_date __P((SHELL_VAR *));
+static SHELL_VAR *get_date_format __P((SHELL_VAR *));
+static SHELL_VAR *assign_date_format __P((SHELL_VAR *, char *, arrayind_t));
+
static SHELL_VAR *assign_seconds __P((SHELL_VAR *, char *, arrayind_t));
static SHELL_VAR *get_seconds __P((SHELL_VAR *));
static SHELL_VAR *init_seconds_var __P((void));
@@ -1098,7 +1102,72 @@
INIT_DYNAMIC_VAR ("SECONDS", (v ? value_cell (v) : (char *)NULL),
get_seconds, assign_seconds);
return v;
}
-
+
+/* Value of $DATEFORMAT which control $DATE */
+char *date_format;
+
+static SHELL_VAR *
+init_date_format ()
+{
+ SHELL_VAR *v;
+
+ date_format = strdup ("%Y.%m.%d");
+ return v;
+}
+
+static SHELL_VAR *
+assign_date_format (self, value, unused)
+ SHELL_VAR *self;
+ char *value;
+ arrayind_t unused;
+{
+ free (date_format);
+ date_format = strdup(value);
+
+ return (self);
+}
+
+static SHELL_VAR *
+get_date_format (var)
+ SHELL_VAR *var;
+{
+ char *p;
+
+ p = savestring (date_format);
+
+ FREE (value_cell (var));
+ var_setvalue (var, p);
+
+ return (var);
+}
+
+
+static SHELL_VAR *
+get_date (var)
+ SHELL_VAR *var;
+{
+ char *p, date[40];
+ struct tm *tmp;
+ time_t t;
+ SHELL_VAR *v;
+
+ t = time (NULL);
+ tmp = localtime (&t);
+
+ if (tmp == NULL)
+ strcpy (p, "localtime returned an error");
+
+ else
+ strftime (date, sizeof (date), date_format, tmp);
+
+ p = savestring (date);
+
+ FREE (value_cell (var));
+ var_setvalue (var, p);
+
+ return (var);
+}
+
/* The random number seed. You can change this by setting RANDOM. */
static unsigned long rseed = 1;
static int last_random_value;
@@ -1396,6 +1465,7 @@
SHELL_VAR *v;
v = init_seconds_var ();
+ v = init_date_format ();
INIT_DYNAMIC_VAR ("BASH_COMMAND", (char *)NULL, get_bash_command,
(sh_var_assign_func_t *)NULL);
INIT_DYNAMIC_VAR ("BASH_SUBSHELL", (char *)NULL, get_subshell,
assign_subshell);
@@ -1403,6 +1473,9 @@
INIT_DYNAMIC_VAR ("RANDOM", (char *)NULL, get_random, assign_random);
INIT_DYNAMIC_VAR ("LINENO", (char *)NULL, get_lineno, assign_lineno);
+ INIT_DYNAMIC_VAR ("DATE", (char *)NULL, get_date, (sh_var_assign_func_t
*)NULL);
+ INIT_DYNAMIC_VAR ("DATEFORMAT", (char *)NULL, get_date_format,
assign_date_format);
+
#if defined (HISTORY)
INIT_DYNAMIC_VAR ("HISTCMD", (char *)NULL, get_histcmd,
(sh_var_assign_func_t *)NULL);
#endif
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