From ffadb3beb1b80943860f49ef2ef88bf294235d3f Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Wed, 19 Aug 2020 21:40:21 +0100
Subject: [PATCH] expire-8601: wip new version

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
---
 scripts/expire-iso8601.new | 32 ++++++++++++++++++++++++++------
 1 file changed, 26 insertions(+), 6 deletions(-)

diff --git a/scripts/expire-iso8601.new b/scripts/expire-iso8601.new
index bcf4ec9..6c8ffd9 100755
--- a/scripts/expire-iso8601.new
+++ b/scripts/expire-iso8601.new
@@ -44,8 +44,11 @@ exit status:
    16                  catastrophic failure
 END
 
+use POSIX;
 use Carp;
-use DateTime::Format::RFC3339;
+use Data::Dumper;
+use Date::Parse;
+use DateTime::Format::Strptime;
 
 our @files;
 our $rm = 1;
@@ -60,17 +63,25 @@ sub badusage ($) {
 }
 
 sub scan () {
-  my $parser = DateTime::Format::RFC3339->new;
-
+#  my $strp = DateTime::Format::Strptime->new();
   foreach my $f (<[0-9]*>) {
     if ($f  !~ m/^ \d\d\d\d - \d\d - \d\d 
 		 (?: T \d\d \: \d\d (?: \: \d\d )?
 		   (?: [-+] \d{1,2} \:? \d\d )? )? /x) {
       print STDERR "ignoring $f\n";
     }
-    $!=0; $?=0; my $t = `date -d '$&' +%s`;
-    die "date(!) failed on $&: $? $!" if $! || $?;
-    chomp $t or confess;
+    my @t = Date::Parse::strptime($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;
     push @files, { F => $f, T => $t, U => [] };
   }
 }
@@ -86,6 +97,8 @@ sub precomp () {
   my $newest_t = $files[0]{T};
   $_->{A} = ($newest_t - $_->{T}) / $unit foreach @files;
   $slop /= $unit;
+
+#  print DEBUG Dumper(\@files, \@intervals);
 }
 
 sub flag ($) {
@@ -96,8 +109,11 @@ sub flag ($) {
   my $start_age = ($n+1) * $d;
   my $i = 0;
 
+  print DEBUG "FLAG $spec\n";
+
   # find $i, the youngest which is at least $number x $interval
   for (;;) {
+    print DEBUG "i #$i $files[$i]{A}\n";
     last if $files[$i]{A} > $start_age;
     if ($i == $#files) {
       print STDERR "insufficient for $spec\n";
@@ -115,6 +131,7 @@ sub flag ($) {
       last if $j < 0;
       last if $files[$j];
       my $dt = $files[$i]{A} - $files[$j]{A};
+      print DEBUG "j #$j $files[$j]{A} dt=$dt\n";
       last if $dt >= $d - $slop;
     }
     last if $j < 0;
@@ -139,6 +156,8 @@ sub implement () {
   }
 }
 
+open DEBUG, ">/dev/null" or die $!;
+
 while (@ARGV && $ARGV[0] =~ m/^-/) {
   $_ = shift @ARGV;
   last if $_ eq '-' || $_ eq '--';
@@ -146,6 +165,7 @@ while (@ARGV && $ARGV[0] =~ m/^-/) {
     while (m/^-./) {
       if (s/^-n/-/) { $rm=0; }
       elsif (s/-r/-/) { $recurse=1; }
+      elsif (s/-D/-/) { open DEBUG, ">&STDERR" or die $!; }
       elsif (s/-u(\d+)$//) { $unit=$1; }
       elsif (s/-s(\d+)$//) { $slop=$1; }
       else { badusage "unknown short option $_" }
-- 
2.30.2