Changeset 32316 for gs2-extensions/pdf-box/trunk/java/perllib/plugins/PDFBoxConverter.pm

Timestamp:

2018-07-30T17:44:16+12:00 (6 years ago)

Author:

ak19

Message:

Followed Kathy's instructions on setting up the jbig2-imageio jar library to get PagedImagePlugin to work with some of Renate's pdfs: no longer are blank images produced for these special PDFs. Including the jbig2 jar library file and its Apache 2 license, and the update to PDFBoxConverter.pm

File:

• gs2-extensions/pdf-box/trunk/java/perllib/plugins/PDFBoxConverter.pm (modified) (2 diffs)

gs2-extensions/pdf-box/trunk/java/perllib/plugins/PDFBoxConverter.pm

@@ -126 +126 @@
     my $gextpb_home = $ENV{'GEXT_PDFBOX'};
     my $pbajar = &FileUtils::filenameConcatenate($gextpb_home,"lib","java","pdfbox-app.jar");
+    my $pbjbigjar = &FileUtils::filenameConcatenate($gextpb_home,"lib","java","jbig2-imageio-3.0.1.jar");
+    # Not including the following JPEG2000 jar, as it is under commercial license:
+    # https://github.com/jai-imageio/jai-imageio-jpeg2000 leading to https://bintray.com/jai-imageio/maven/jai-imageio-jpeg2000# (Files tab)
+    # my $pbjp2jar = &FileUtils::filenameConcatenate($gextpb_home,"lib","java","jai-imageio-jpeg2000-1.3.0.jar"); # jpeg2000
     my $java = &util::get_java_command();
     $self->{'pdfbox_txt_launch_cmd'} = "$java -cp \"$pbajar\" org.apache.pdfbox.tools.ExtractText";
     $self->{'pdfbox_html_launch_cmd'} = "$java -cp \"$pbajar\" -Dline.separator=\"<br />\" org.apache.pdfbox.tools.ExtractText";
-#   $self->{'pdfbox_img_launch_cmd'} = "java -cp \"$pbajar\" org.apache.pdfbox.tools.PDFToImage"; # pdfbox 2.09 cmd for converting each PDF page to an image (jpg, png)
 
     # We use this next cmd to launch our new custom PDFBox class (PDFBoxToImagesAndText.java) to convert each PDF page into an image (gif, jpg, png)
@@ -136 +139 @@
     # Our new custom class PDFBoxToImagesAndText.java lives in the new build folder, so add that to the classpath for the launch cmd
     my $pdfbox_build = &FileUtils::filenameConcatenate($gextpb_home,"build");
-    my $classpath = &util::pathname_cat($pbajar,$pdfbox_build); 
+    # put the pdfbox jar, the jbig2-imageio library (Apache Software License 2.0)
+    # and our build folder containing our custom PDFBox class on the classpath
+    my $classpath = &util::pathname_cat($pbajar, $pbjbigjar, $pdfbox_build);
+#   $self->{'pdfbox_img_launch_cmd'} = "java -cp \"$classpath\" org.apache.pdfbox.tools.PDFToImage"; # pdfbox 2.09 cmd for converting each PDF page to an image (jpg, png)  
     $self->{'pdfbox_imgtxt_launch_cmd'} = "java -cp \"$classpath\" org.greenstone.pdfbox.PDFBoxToImagesAndText";
     }