X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fposixtm.c;h=fff53f50b95bac8df3f651e2539f2f761f0e4589;hb=2f2f93bfb6e0991467a287c1f4a3e0c13b227ef1;hp=7ddf182ff7345631b1d4bb7d7f641940dcfd49cc;hpb=24ae20fb048992858350c0884b5553c7b76a1bdc;p=gnulib.git

diff --git a/lib/posixtm.c b/lib/posixtm.c
index 7ddf182ff..fff53f50b 100644
--- a/lib/posixtm.c
+++ b/lib/posixtm.c
@@ -1,10 +1,12 @@
 /* Parse dates for touch and date.
-   Copyright (C) 1989, 1990, 1991, 1998, 2000-2003 Free Software Foundation Inc.
 
-   This program is free software; you can redistribute it and/or modify
+   Copyright (C) 1989, 1990, 1991, 1998, 2000, 2001, 2002, 2003, 2004,
+   2005, 2006, 2007 Free Software Foundation Inc.
+
+   This program 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 2, or (at your option)
-   any later version.
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -12,40 +14,32 @@
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software Foundation,
-   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 /* Yacc-based version written by Jim Kingdon and David MacKenzie.
    Rewritten by Jim Meyering.  */
 
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
+#include <config.h>
 
-#include <stdbool.h>
+#include "posixtm.h"
 
 #include <stdio.h>
 #include <stdlib.h>
 #include <sys/types.h>
 #include <string.h>
 
-#ifdef TM_IN_SYS_TIME
-# include <sys/time.h>
-#else
-# include <time.h>
+#if USE_UNLOCKED_IO
+# include "unlocked-io.h"
 #endif
 
-#include "posixtm.h"
-#include "unlocked-io.h"
-
 /* ISDIGIT differs from isdigit, as follows:
-   - Its arg may be any int or unsigned int; it need not be an unsigned char.
-   - It's guaranteed to evaluate its argument exactly once.
+   - Its arg may be any int or unsigned int; it need not be an unsigned char
+     or EOF.
    - It's typically faster.
    POSIX says that only '0' through '9' are digits.  Prefer ISDIGIT to
-   ISDIGIT_LOCALE unless it's important to use the locale's definition
+   isdigit unless it's important to use the locale's definition
    of `digit' even when the host does not conform to POSIX.  */
-#define ISDIGIT(c) ((unsigned) (c) - '0' <= 9)
+#define ISDIGIT(c) ((unsigned int) (c) - '0' <= 9)
 
 time_t mktime ();
 
@@ -57,8 +51,8 @@ time_t mktime ();
     (PDS_LEADING_YEAR | PDS_CENTURY | PDS_SECONDS)
 
   touch mmddhhmm[YY] FILE... (obsoleted by POSIX 1003.1-2001)
-    8 or 10 digits
-    (PDS_TRAILING_YEAR)
+    8 or 10 digits, YY (if present) must be in the range 69-99
+    (PDS_TRAILING_YEAR | PDS_PRE_2000)
 
   date mmddhhmm[[CC]YY]
     8, 10, or 12 digits
@@ -67,7 +61,7 @@ time_t mktime ();
 */
 
 static int
-year (struct tm *tm, const int *digit_pair, size_t n, int allow_century)
+year (struct tm *tm, const int *digit_pair, size_t n, unsigned int syntax_bits)
 {
   switch (n)
     {
@@ -77,11 +71,15 @@ year (struct tm *tm, const int *digit_pair, size_t n, int allow_century)
 	 POSIX requires that 00-68 be interpreted as 2000-2068,
 	 and that 69-99 be interpreted as 1969-1999.  */
       if (digit_pair[0] <= 68)
-	tm->tm_year += 100;
+	{
+	  if (syntax_bits & PDS_PRE_2000)
+	    return 1;
+	  tm->tm_year += 100;
+	}
       break;
 
     case 2:
-      if (!allow_century)
+      if (! (syntax_bits & PDS_CENTURY))
 	return 1;
       tm->tm_year = digit_pair[0] * 100 + digit_pair[1] - 1900;
       break;
@@ -113,7 +111,7 @@ posix_time_parse (struct tm *tm, const char *s, unsigned int syntax_bits)
   const char *dot = NULL;
   int pair[6];
   int *p;
-  unsigned int i;
+  size_t i;
 
   size_t s_len = strlen (s);
   size_t len = (((syntax_bits & PDS_SECONDS) && (dot = strchr (s, '.')))
@@ -143,7 +141,7 @@ posix_time_parse (struct tm *tm, const char *s, unsigned int syntax_bits)
   p = pair;
   if (syntax_bits & PDS_LEADING_YEAR)
     {
-      if (year (tm, p, len - 4, syntax_bits & PDS_CENTURY))
+      if (year (tm, p, len - 4, syntax_bits))
 	return 1;
       p += len - 4;
       len = 4;
@@ -159,7 +157,7 @@ posix_time_parse (struct tm *tm, const char *s, unsigned int syntax_bits)
   /* Handle any trailing year.  */
   if (syntax_bits & PDS_TRAILING_YEAR)
     {
-      if (year (tm, p, len, syntax_bits & PDS_CENTURY))
+      if (year (tm, p, len, syntax_bits))
 	return 1;
     }
 
@@ -188,7 +186,15 @@ posix_time_parse (struct tm *tm, const char *s, unsigned int syntax_bits)
 bool
 posixtime (time_t *p, const char *s, unsigned int syntax_bits)
 {
-  struct tm tm0;
+  struct tm tm0
+#ifdef lint
+  /* Placate gcc-4's -Wuninitialized.
+     posix_time_parse fails to set all of tm0 only when it returns
+     nonzero (due to year() returning nonzero), and in that case,
+     this code doesn't use the tm0 at all.  */
+    = { 0, }
+#endif
+    ;
   struct tm tm1;
   struct tm const *tm;
   time_t t;
@@ -304,7 +310,7 @@ main (void)
 	{
 	  printf ("%-15s %2u ", time_str, syntax_bits);
 	  if (posixtime (&t, time_str, syntax_bits))
-	    printf ("%12ld %s", (long) t, ctime (&t));
+	    printf ("%12ld %s", (long int) t, ctime (&t));
 	  else
 	    printf ("%12s %s", "*", "*\n");
 	}
@@ -316,6 +322,6 @@ main (void)
 
 /*
 Local Variables:
-compile-command: "gcc -DTEST_POSIXTIME -DHAVE_CONFIG_H -I.. -g -O -Wall -W posixtm.c"
+compile-command: "gcc -DTEST_POSIXTIME -g -O -Wall -W posixtm.c"
 End:
 */