resolves #535 optimize PDF if writing file and optimize attribute is set (PR #1299)

2 files changed, 20 insertions, 65 deletions

diff --git a/bin/asciidoctor-pdf-optimize b/bin/asciidoctor-pdf-optimize
new file mode 100755
index 00000000..744dd8ec
--- /dev/null
+++ b/bin/asciidoctor-pdf-optimize
@@ -0,0 +1,20 @@
+#!/usr/bin/env ruby
+# frozen_string_literal: true
+
+optimizer = File.absolute_path '../lib/asciidoctor-pdf/optimizer.rb', __dir__
+if File.exist? optimizer
+  require optimizer
+else
+  require 'asciidoctor-pdf/optimizer'
+end
+
+args = ARGV.dup
+
+unless (filename = args.pop)
+  warn 'optimize-pdf: Please specify a PDF file to optimize.'
+  exit 1
+end
+
+quality = args[0] == '-q' ? args[1].to_s : ''
+
+(Asciidoctor::PDF::Optimizer.new quality).generate_file filename
diff --git a/bin/optimize-pdf b/bin/optimize-pdf
deleted file mode 100755
index 6cc71ab8..00000000
--- a/bin/optimize-pdf
+++ /dev/null
@@ -1,65 +0,0 @@
-#!/bin/bash
-
-# Optimizes and compresses the specified PDF using Ghostscript (gs).
-#
-# [NOTE]
-# You need at least Ghostscript 9.10 in order for page labels defined in the
-# PDF to be preserved (e.g., front matter pages numbered using roman numerals).
-
-if [ -z $1 ]; then
-   echo "Please supply a PDF file to optimize"
-   exit 1
-fi
-
-if [ -z $GS ]; then
-  GS=gs
-fi
-
-FILE=$1
-FILE_BASENAME=${FILE%.pdf}
-FILE_OPTIMIZED=$FILE_BASENAME-optimized.pdf
-FILE_PDFMARK=
-if [ -f "$FILE_BASENAME.pdfmark" ]; then
-  FILE_PDFMARK="$FILE_BASENAME.pdfmark"
-fi
-DOWNSAMPLE_IMAGES=true
-if [ -z $IMAGE_DPI ]; then
-  #IMAGE_DPI=150
-  IMAGE_DPI=300
-fi
-
-# /prepress defaults (see http://ghostscript.com/doc/current/Ps2pdf.htm)
-# -d{Color,Gray,Mono}ImageDownsampleType=/Bicubic
-# -dAutoFilter{Color,Gray}Images=true
-# -dOptimize=true
-# -dEmbedAllFonts=true
-# -dSubsetFonts=true
-# -dColorConversionStrategy=/LeaveColorUnchanged
-# -dUCRandBGInfo=/Preserve
-# -dCompressPages=true
-#
-# other unused settings
-# -r72
-#
-# for info about pdfmarks, see http://milan.kupcevic.net/ghostscript-ps-pdf
-#
-# to convert to grayscale, add the following (though doesn't always work)
-#
-# -dProcessColorModel=/DeviceGray \
-# -dColorConversionStrategy=/Gray \
-
-"$GS" -q -dNOPAUSE -dBATCH -dSAFER -dNOOUTERSAVE \
-  -sDEVICE=pdfwrite \
-  -dPDFSETTINGS=/prepress \
-  -dPrinted=false \
-  -dCannotEmbedFontPolicy=/Warning \
-  -dDownsampleColorImages=$DOWNSAMPLE_IMAGES \
-  -dColorImageResolution=$IMAGE_DPI \
-  -dDownsampleGrayImages=$DOWNSAMPLE_IMAGES \
-  -dGrayImageResolution=$IMAGE_DPI \
-  -dDownsampleMonoImages=$DOWNSAMPLE_IMAGES \
-  -dMonoImageResolution=$IMAGE_DPI \
-  -sOutputFile="$FILE_OPTIMIZED" \
-  "$FILE" $FILE_PDFMARK
-
-exit 0