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-rw-r--r--Bugzilla/Flag.pm2
-rw-r--r--Bugzilla/Util.pm42
2 files changed, 40 insertions, 4 deletions
diff --git a/Bugzilla/Flag.pm b/Bugzilla/Flag.pm
index 57ea55982..ffed79bde 100644
--- a/Bugzilla/Flag.pm
+++ b/Bugzilla/Flag.pm
@@ -307,7 +307,7 @@ sub process {
my $old_summaries = join(", ", @old_summaries);
my $new_summaries = join(", ", @new_summaries);
- my ($removed, $added) = &::DiffStrings($old_summaries, $new_summaries);
+ my ($removed, $added) = diff_strings($old_summaries, $new_summaries);
if ($removed ne $added) {
my $sql_removed = &::SqlQuote($removed);
my $sql_added = &::SqlQuote($added);
diff --git a/Bugzilla/Util.pm b/Bugzilla/Util.pm
index 0328c4f86..125d91164 100644
--- a/Bugzilla/Util.pm
+++ b/Bugzilla/Util.pm
@@ -32,7 +32,7 @@ use base qw(Exporter);
html_quote url_quote value_quote xml_quote
css_class_quote
lsearch max min
- trim format_time);
+ trim diff_strings format_time);
use Bugzilla::Config;
@@ -146,6 +146,33 @@ sub trim {
return $str;
}
+sub diff_strings {
+ my ($oldstr, $newstr) = @_;
+
+ # Split the old and new strings into arrays containing their values.
+ $oldstr =~ s/[\s,]+/ /g;
+ $newstr =~ s/[\s,]+/ /g;
+ my @old = split(" ", $oldstr);
+ my @new = split(" ", $newstr);
+
+ # For each pair of (old, new) entries:
+ # If they're equal, set them to empty. When done, @old contains entries
+ # that were removed; @new contains ones that got added.
+
+ foreach my $oldv (@old) {
+ foreach my $newv (@new) {
+ next if ($newv eq '');
+ if ($oldv eq $newv) {
+ $newv = $oldv = '';
+ }
+ }
+ }
+ my $removed = join (", ", grep { $_ ne '' } @old);
+ my $added = join (", ", grep { $_ ne '' } @new);
+
+ return ($removed, $added);
+}
+
sub format_time {
my ($time) = @_;
@@ -208,8 +235,9 @@ Bugzilla::Util - Generic utility functions for bugzilla
$val = max($a, $b, $c);
$val = min($a, $b, $c);
- # Functions for trimming variables
+ # Functions for manipulating strings
$val = trim(" abc ");
+ ($removed, $added) = diff_strings($old, $new);
# Functions for formatting time
format_time($time);
@@ -315,7 +343,7 @@ Returns the minimum from a set of values.
=back
-=head2 Trimming
+=head2 String Manipulation
=over 4
@@ -324,6 +352,14 @@ Returns the minimum from a set of values.
Removes any leading or trailing whitespace from a string. This routine does not
modify the existing string.
+=item C<diff_strings($oldstr, $newstr)>
+
+Takes two strings containing a list of comma- or space-separated items
+and returns what items were removed from or added to the new one,
+compared to the old one. Returns a list, where the first entry is a scalar
+containing removed items, and the second entry is a scalar containing added
+items.
+
=back
=head2 Formatting Time