Changeset 34921 for main/trunk/greenstone2/perllib/cpan/Image/ExifTool/GIMP.pm

Timestamp:

2021-02-26T19:39:51+13:00 (3 years ago)

Author:

anupama

Message:

Committing the improvements to EmbeddedMetaPlugin's processing of Keywords vs other metadata fields. Keywords were literally stored as arrays of words rather than phrases in PDFs (at least in Diego's sample PDF), whereas other meta fields like Subjects and Creators stored them as arrays of phrases. To get both to work, Kathy updated EXIF to a newer version, to retrieve the actual EXIF values stored in the PDF. And Kathy and Dr Bainbridge came up with a new option that I added called apply_join_before_split_to_metafields that's a regex which can list the metadata fields to apply the join_before_split to and whcih previously always got applied to all metadata fields. Now it's applied to any *Keywords metafields by default, as that's the metafield we have experience of that behaves differently to the others, as it stores by word instead of phrases. Tested on Diego's sample PDF. Diego has double-checked it to works on his sample PDF too, setting the split char to ; and turning on the join_before_split and leaving apply_join_before_split_to_metafields at its default of .*Keywords. File changes are strings.properties for the tooltip, the plugin introducing the option and working with it and Kathy's EXIF updates affecting cpan/File and cpan/Image.

File:

• main/trunk/greenstone2/perllib/cpan/Image/ExifTool/GIMP.pm (modified) (14 diffs)

main/trunk/greenstone2/perllib/cpan/Image/ExifTool/GIMP.pm

@@ -5 +5 @@
 #
 # Revisions:    2010/10/05 - P. Harvey Created
+#               2018/08/21 - PH Updated to current XCF specification (v013)
 #
 # References:   1) GIMP source code
-#               2) http://svn.gnome.org/viewvc/gimp/trunk/devel-docs/xcf.txt?view=markup
+#               2) https://gitlab.gnome.org/GNOME/gimp/blob/master/devel-docs/xcf.txt
 #------------------------------------------------------------------------------
 
@@ -16 +17 @@
 use Image::ExifTool qw(:DataAccess :Utils);
 
-$VERSION = '1.01';
+$VERSION = '1.03';
 
 sub ProcessParasites($$$);
@@ -29 +30 @@
     },
     header => { SubDirectory => { TagTable => 'Image::ExifTool::GIMP::Header' } },
+    # recognized properties
+    # 1 - ColorMap
+    # 17 - SamplePoints? (doc says 17 is also "PROP_SAMPLE_POINTS"??)
     17 => {
         Name => 'Compression',
@@ -39 +43 @@
         },
     },
+    # 18 - Guides
     19 => {
         Name => 'Resolution',
         SubDirectory => { TagTable => 'Image::ExifTool::GIMP::Resolution' },
     },
+    20 => {
+        Name => 'Tattoo',
+        Format => 'int32u',
+    },
     21 => {
         Name => 'Parasites',
         SubDirectory => { TagTable => 'Image::ExifTool::GIMP::Parasite' },
     },
+    22 => {
+        Name => 'Units',
+        Format => 'int32u',
+        PrintConv => {
+            1 => 'Inches',
+            2 => 'mm',
+            3 => 'Points',
+            4 => 'Picas',
+        },
+    },
+    # 23 Paths
+    # 24 UserUnit
+    # 25 Vectors
 );
 
@@ -56 +78 @@
         Name => 'XCFVersion',
         Format => 'string[5]',
+        DataMember => 'XCFVersion',
+        RawConv => '$$self{XCFVersion} = $val',
         PrintConv => {
             'file' => '0',
             'v001' => '1',
             'v002' => '2',
+            OTHER => sub { my $val = shift; $val =~ s/^v0*//; return $val },
         },
     },
@@ -73 +98 @@
         },
     },
+    # 26 - [XCF 4 or later] Precision
 );
 
@@ -127 +153 @@
         },
     },
+    'gimp-image-metadata' => {
+        Name => 'XML',
+        SubDirectory => { TagTable => 'Image::ExifTool::XMP::XML' },
+    },
+    # Seen, but not yet decoded:
+    #  gimp-image-grid
+    #  jpeg-settings
 );
 
@@ -135 +168 @@
 sub ProcessParasites($$$)
 {
-    my ($exifTool, $dirInfo, $tagTablePtr) = @_;
-    my $unknown = $exifTool->Options('Unknown') || $exifTool->Options('Verbose');
+    my ($et, $dirInfo, $tagTablePtr) = @_;
+    my $unknown = $et->Options('Unknown') || $et->Options('Verbose');
     my $dataPt = $$dirInfo{DataPt};
     my $pos = $$dirInfo{DirStart} || 0;
     my $end = length $$dataPt;
-    $exifTool->VerboseDir('Parasites', undef, $end);
+    $et->VerboseDir('Parasites', undef, $end);
     for (;;) {
         last if $pos + 4 > $end;
@@ -161 +194 @@
             $name =~ s/([a-z])-([a-z])/$1\u$2/g;
             $name = "GIMP-$name" unless length($name) > 1;
-            Image::ExifTool::AddTagToTable($tagTablePtr, $tag, { Name => $name, Unknown => 1 });
+            AddTagToTable($tagTablePtr, $tag, { Name => $name, Unknown => 1 });
         }
-        $exifTool->HandleTag($tagTablePtr, $tag, undef,
+        $et->HandleTag($tagTablePtr, $tag, undef,
             DataPt => $dataPt,
             Start  => $pos,
@@ -179 +212 @@
 sub ProcessXCF($$)
 {
-    my ($exifTool, $dirInfo) = @_;
+    my ($et, $dirInfo) = @_;
     my $raf = $$dirInfo{RAF};
     my $buff;
@@ -187 +220 @@
 
     my $tagTablePtr = GetTagTable('Image::ExifTool::GIMP::Main');
-    my $verbose = $exifTool->Options('Verbose');
-    $exifTool->SetFileType();
+    my $verbose = $et->Options('Verbose');
+    $et->SetFileType();
     SetByteOrder('MM');
 
     # process the XCF header
-    $exifTool->HandleTag($tagTablePtr, 'header', $buff);
+    $et->HandleTag($tagTablePtr, 'header', $buff);
+
+    # skip over precision for XCV version 4 or later
+    $raf->Seek(4, 1) if $$et{XCFVersion} =~ /^v0*(\d+)/ and $1 >= 4;
 
     # loop through image properties
@@ -199 +235 @@
         my $tag  = Get32u(\$buff, 0) or last;
         my $size = Get32u(\$buff, 4);
-        $verbose and $exifTool->VPrint(0, "XCF property $tag ($size bytes):\n");
+        $verbose and $et->VPrint(0, "XCF property $tag ($size bytes):\n");
         unless ($$tagTablePtr{$tag}) {
             $raf->Seek($size, 1);
@@ -205 +241 @@
         }
         $raf->Read($buff, $size) == $size or last;
-        $exifTool->HandleTag($tagTablePtr, $tag, undef,
+        $et->HandleTag($tagTablePtr, $tag, undef,
             DataPt  => \$buff,
             DataPos => $raf->Tell() - $size,
@@ -235 +271 @@
 =head1 AUTHOR
 
-Copyright 2003-2011, Phil Harvey (phil at owl.phy.queensu.ca)
+Copyright 2003-2021, Phil Harvey (philharvey66 at gmail.com)
 
 This library is free software; you can redistribute it and/or modify it