Changeset 34921 for main/trunk/greenstone2/perllib/cpan/Image/ExifTool/PGF.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/PGF.pm (modified) (4 diffs)

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

@@ -16 +16 @@
 use Image::ExifTool qw(:DataAccess :Utils);
 
-$VERSION = '1.01';
+$VERSION = '1.02';
 
 # PGF header information
@@ -69 +69 @@
 sub ProcessPGF($$)
 {
-    my ($exifTool, $dirInfo) = @_;
+    my ($et, $dirInfo) = @_;
     my $raf = $$dirInfo{RAF};
     my $buff;
@@ -76 +76 @@
     return 0 unless $raf->Read($buff, 24) == 24 and $buff =~ /^PGF(.)/s;
     my $ver = ord $1;
-    $exifTool->SetFileType();
+    $et->SetFileType();
     SetByteOrder('II');
 
     # currently support only version 0x36
     unless ($ver == 0x36) {
-        $exifTool->Error(sprintf('Unsupported PGF version 0x%.2x', $ver));
+        $et->Error(sprintf('Unsupported PGF version 0x%.2x', $ver));
         return 1;
     }
     # extract information from the PGF header
     my $tagTablePtr = GetTagTable('Image::ExifTool::PGF::Main');
-    $exifTool->ProcessDirectory({ DataPt => \$buff, DataPos => 0 }, $tagTablePtr);
+    $et->ProcessDirectory({ DataPt => \$buff, DataPos => 0 }, $tagTablePtr);
 
     my $len = Get32u(\$buff, 4) - 16; # length of post-header data
 
     # skip colour table if necessary
-    $len -= $raf->Seek(1024, 1) ? 1024 : $len if $$exifTool{PGFColorMode} == 2;
+    $len -= $raf->Seek(1024, 1) ? 1024 : $len if $$et{PGFColorMode} == 2;
 
     # extract information from the embedded metadata image (PNG format)
     if ($len > 0 and $len < 0x1000000 and $raf->Read($buff, $len) == $len) {
-        $exifTool->ExtractInfo(\$buff, { ReEntry => 1 });
+        $et->ExtractInfo(\$buff, { ReEntry => 1 });
     }
     return 1;
@@ -120 +120 @@
 =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