From e9e360cbe894b5674a3ffe433e5d727cf8368715 Mon Sep 17 00:00:00 2001
From: Guilhem Moulin <guilhem@fripost.org>
Date: Sat, 5 Mar 2016 15:31:36 +0100
Subject: pullimap (IMAP part only)

---
 lib/Net/IMAP/InterIMAP.pm | 43 ++++++++++++++++++++++++++++++-------------
 1 file changed, 30 insertions(+), 13 deletions(-)

(limited to 'lib')

diff --git a/lib/Net/IMAP/InterIMAP.pm b/lib/Net/IMAP/InterIMAP.pm
index 3957020..7d6e468 100644
--- a/lib/Net/IMAP/InterIMAP.pm
+++ b/lib/Net/IMAP/InterIMAP.pm
@@ -1043,22 +1043,21 @@ sub get_cache($@) {
 
 
 # $self->is_dirty($mailbox)
-#   Return true if there are pending updates for $mailbox, i.e., its
-#   internal cache is newer than its persistent cache.
+#   Return true if there are pending updates for $mailbox, i.e., if its
+#   internal cache's HIGHESTMODSEQ or UIDNEXT values differ from its
+#   persistent cache's values.
 sub is_dirty($$) {
     my ($self, $mailbox) = @_;
-    $mailbox = 'INBOX' if uc $mailbox eq 'INBOX'; # INBOX is case-insensitive
-    my $cache = $self->{_CACHE}->{$mailbox}   // return 1;
-    my $pcache = $self->{_PCACHE}->{$mailbox} // return 1;
+    $self->_updated_cache($mailbox, qw/HIGHESTMODSEQ UIDNEXT/);
+}
 
-    if (defined $pcache->{HIGHESTMODSEQ} and defined $cache->{HIGHESTMODSEQ}
-            and $pcache->{HIGHESTMODSEQ} == $cache->{HIGHESTMODSEQ} and
-        defined $pcache->{UIDNEXT} and defined $cache->{UIDNEXT}
-            and $pcache->{UIDNEXT} == $cache->{UIDNEXT}) {
-        return 0
-    } else {
-        return 1
-    }
+
+# $self->has_new_mails($mailbox)
+#   Return true if there are new messages in $mailbox, i.e., if its
+#   internal cache's UIDNEXT value differs from its persistent cache's.
+sub has_new_mails($$) {
+    my ($self, $mailbox) = @_;
+    $self->_updated_cache($mailbox, 'UIDNEXT');
 }
 
 
@@ -1661,6 +1660,24 @@ sub _update_cache_for($$%) {
 }
 
 
+# $self->_updated_cache($mailbox)
+#   Return true if there are pending updates for $mailbox, i.e., if one
+#   of its internal cache's @attrs value differs from the persistent
+#   cache's value.
+sub _updated_cache($$@) {
+    my ($self, $mailbox, @attrs) = @_;
+    $mailbox = 'INBOX' if uc $mailbox eq 'INBOX'; # INBOX is case-insensitive
+    my $cache  = $self->{_CACHE}->{$mailbox}  // return 1;
+    my $pcache = $self->{_PCACHE}->{$mailbox} // return 1;
+
+    foreach (@attrs) {
+        return 1 unless $pcache->{$_} and defined $cache->{$_} and
+                        $pcache->{$_} == $cache->{$_};
+    }
+    return 0;
+}
+
+
 # $self->_cmd_init($command)
 #   Generate a new tag for the given $command, push both the
 #   concatenation to the command buffer.  $command can be a scalar or a
-- 
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