* strftime.c: %Y format a year with 4 digits at least.

* lib/time.rb: format a year with 4 digits at least.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@25906 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,9 @@
+Tue Nov 24 20:11:37 2009  Tanaka Akira  <akr@fsij.org>
+
+	* strftime.c: %Y format a year with 4 digits at least.
+
+	* lib/time.rb: format a year with 4 digits at least.
+
 Tue Nov 24 20:05:27 2009  Tanaka Akira  <akr@fsij.org>
 
 	* defs/known_errors.def: more errors.

lib/time.rb

@@ -432,9 +432,9 @@ class Time
   # If +self+ is a UTC time, -0000 is used as zone.
   #
   def rfc2822
-    sprintf('%s, %02d %s %04d %02d:%02d:%02d ',
+    sprintf('%s, %02d %s %0*d %02d:%02d:%02d ',
       RFC2822_DAY_NAME[wday],
-      day, RFC2822_MONTH_NAME[mon-1], year,
+      day, RFC2822_MONTH_NAME[mon-1], year < 0 ? 5 : 4, year,
       hour, min, sec) +
     if utc?
       '-0000'
@@ -464,9 +464,9 @@ class Time
   #
   def httpdate
     t = dup.utc
-    sprintf('%s, %02d %s %04d %02d:%02d:%02d GMT',
+    sprintf('%s, %02d %s %0*d %02d:%02d:%02d GMT',
       RFC2822_DAY_NAME[t.wday],
-      t.day, RFC2822_MONTH_NAME[t.mon-1], t.year,
+      t.day, RFC2822_MONTH_NAME[t.mon-1], t.year < 0 ? 5 : 4, t.year,
       t.hour, t.min, t.sec)
   end
 
@@ -485,8 +485,8 @@ class Time
   # Its default value is 0.
   #
   def xmlschema(fraction_digits=0)
-    sprintf('%04d-%02d-%02dT%02d:%02d:%02d',
-      year, mon, day, hour, min, sec) +
+    sprintf('%0*d-%02d-%02dT%02d:%02d:%02d',
+      year < 0 ? 5 : 4, year, mon, day, hour, min, sec) +
     if fraction_digits == 0
       ''
     else

strftime.c

@@ -496,7 +496,13 @@ rb_strftime(char *s, size_t maxsize, const char *format, const struct vtm *vtm,
 			continue;
 
 		case 'Y':	/* year with century */
-                        FMTV('0', 1, "d", vtm->year);
+                        if (FIXNUM_P(vtm->year)) {
+                            long y = FIX2LONG(vtm->year);
+                            FMT('0', 0 <= y ? 4 : 5, "ld", y);
+                        }
+                        else {
+                            FMTV('0', 4, "d", vtm->year);
+                        }
 			continue;
 
 #ifdef MAILHEADER_EXT

test/test_time.rb

@@ -188,6 +188,15 @@ class TestTimeExtension < Test::Unit::TestCase # :nodoc:
     end
 
     assert_equal(249, Time.xmlschema("2008-06-05T23:49:23.000249+09:00").usec)
+
+    assert_equal("10000-01-01T00:00:00Z", Time.utc(10000).xmlschema)
+    assert_equal("9999-01-01T00:00:00Z", Time.utc(9999).xmlschema)
+    assert_equal("0001-01-01T00:00:00Z", Time.utc(1).xmlschema) # 1 AD
+    assert_equal("0000-01-01T00:00:00Z", Time.utc(0).xmlschema) # 1 BC
+    assert_equal("-0001-01-01T00:00:00Z", Time.utc(-1).xmlschema) # 2 BC
+    assert_equal("-0004-01-01T00:00:00Z", Time.utc(-4).xmlschema) # 5 BC
+    assert_equal("-9999-01-01T00:00:00Z", Time.utc(-9999).xmlschema)
+    assert_equal("-10000-01-01T00:00:00Z", Time.utc(-10000).xmlschema)
   end
 
   def test_completion