Revert "expire-iso8601: Use date(1)"

It's not faster.

With DateTime::Format::Strptime, whole program runtime on my
test case:
  real    0m1.371s
  user    0m1.254s
  sys     0m0.117s

With date(1):
  real    0m5.408s
  user    0m1.834s
  sys     0m3.683s

This reverts commit 2d3da03e893d0c59e236224f049215fab8e81e8e.

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/scripts/expire-iso8601 b/scripts/expire-iso8601
index 1ef843b2ef166bd03fc05a14bec50828a6158b16..552b25839cb5e90c591e7e1a10e4ec752be73ea0 100755 (executable)
--- a/scripts/expire-iso8601
+++ b/scripts/expire-iso8601
@@ -71,18 +71,18 @@ sub scan () {
                   (?: [-+] \d{1,2} \:? \d\d )? )? /x) {
       print STDERR "ignoring $f\n";
     }
-#    my @t = Date::Parse::strptime($f);
-#    @t = map { $_ // 0 } @t;
-#    my $t = mktime @t;
+    my @t = Date::Parse::strptime($f);
+    @t = map { $_ // 0 } @t;
+    my $t = mktime @t;
 #    m
 #    my $t = $strp->parse_datetime($f);
 #    $t = $t->epoch();
 #    my @t = Date::Parse::strptime($f);
 #print STDERR Dumper(\@t);
 #    my $t = mktime(@t);
-    $!=0; $?=0; my $t = `date -d '$&' +%s`;
-    die "date(!) failed on $&: $? $!" if $! || $?;
-    chomp $t or confess;
+#    $!=0; $?=0; my $t = `date -d '$&' +%s`;
+#    die "date(!) failed on $&: $? $!" if $! || $?;
+#    chomp $t or confess;
     push @files, { F => $f, T => $t, U => [] };
   }
 }