1 files changed, 128 insertions, 0 deletions
diff --git a/examples/loadables/strftime.c b/examples/loadables/strftime.c
new file mode 100644
index 0000000..f4e194e
--- /dev/null
+++ b/examples/loadables/strftime.c
@@ -0,0 +1,128 @@
+/* strftime - loadable builtin interface to strftime(3) */
+
+/* See Makefile for compilation details. */
+
+/*
+   Copyright (C) 1999-2009 Free Software Foundation, Inc.
+
+   This file is part of GNU Bash.
+   Bash is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   Bash is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with Bash.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <config.h>
+
+#if defined (HAVE_UNISTD_H)
+#  include <unistd.h>
+#endif
+
+#include "bashtypes.h"
+#include "posixtime.h"
+
+#include <stdio.h>
+
+#include "builtins.h"
+#include "shell.h"
+#include "common.h"
+#include "bashgetopt.h"
+
+int
+strftime_builtin (list)
+     WORD_LIST *list;
+{
+  char *format, *tbuf;
+  size_t tbsize, tsize;
+  time_t secs;
+  struct tm *t;
+  int n;
+  intmax_t i;
+
+  if (no_options (list))
+    return (EX_USAGE);
+  list = loptend;
+
+  if (list == 0)
+    {
+      builtin_usage ();
+      return (EX_USAGE);
+    }
+
+  format = list->word->word;
+  if (format == 0 || *format == 0)
+    {
+      printf ("\n");
+      return (EXECUTION_SUCCESS);
+    }
+
+  list = list->next;
+
+  if (list && list->word->word)
+    {
+      n = legal_number (list->word->word, &i);
+      if (n == 0 || i < 0 || i != (time_t)i)
+	{
+	  sh_invalidnum (list->word->word);
+	  return (EXECUTION_FAILURE);
+	}
+      else
+        secs = i;
+    }
+  else
+    secs = NOW;
+
+  t = localtime (&secs);
+
+  tbsize = strlen (format) * 4;
+  tbuf = 0;
+
+  /* Now try to figure out how big the buffer should really be.  strftime(3)
+     will return the number of bytes placed in the buffer unless it's greater
+     than MAXSIZE, in which case it returns 0. */
+  for (n = 1; n <= 8; n++)
+    {
+      tbuf = xrealloc (tbuf, tbsize * n);
+      tsize = strftime (tbuf, tbsize * n, format, t);
+      if (tsize)
+        break;
+    }
+
+  if (tsize)
+    printf ("%s\n", tbuf);
+  free (tbuf);
+
+  return (EXECUTION_SUCCESS);
+}
+
+/* An array of strings forming the `long' documentation for a builtin xxx,
+   which is printed by `help xxx'.  It must end with a NULL. */
+char *strftime_doc[] = {
+	"Display formatted time.",
+	"",
+	"Converts date and time format to a string and displays it on the",
+	"standard output.  If the optional second argument is supplied, it",
+	"is used as the number of seconds since the epoch to use in the",
+	"conversion, otherwise the current time is used.",
+	(char *)NULL
+};
+
+/* The standard structure describing a builtin command.  bash keeps an array
+   of these structures.  The flags must include BUILTIN_ENABLED so the
+   builtin can be used. */
+struct builtin strftime_struct = {
+	"strftime",		/* builtin name */
+	strftime_builtin,	/* function implementing the builtin */
+	BUILTIN_ENABLED,	/* initial flags for builtin */
+	strftime_doc,		/* array of long documentation strings. */
+	"strftime format [seconds]",	/* usage synopsis; becomes short_doc */
+	0			/* reserved for internal use */
+};