Add a script for running pdfviewer and comparing to existing results.

experimental/PdfViewer/scripts/test_all_pdfs.sh

+#!/bin/bash
+
+# Copyright 2013 Google Inc.
+#
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+if [ "${1}" == '-h' ] || [ "${1}" == '--help' ]
+then
+echo 'test_all_pdfs.sh
+Usage: Run from the trunk directory of a Skia tree to convert a folder of PDFs into PNGs.
+       Many threads will be run simultaneously using the tool parallel if it is installed.

[epoger, 2013/11/11 18:56:18]

Would be clearer like this:

Many threads will be run simultaneously using the "parallel" tool, if that tool
is installed.

[scroggo, 2013/11/12 14:51:44]

Done.

+       Requires that skdiff and pdfviewer have already been built.
+
+Arguments:
+    folder      Folder containing PDF files. The PNG results will be placed in "folder/new".
+                If folder contains a folder named "old", the PNGs in "folder/new" will be
+                compared to PNGs in "folder/old" with the same name, and the differences
+                will be stored in a "folder/d".'
+exit
+fi
+
+# Early exit if pdfviewer has not been built.
+# TODO (scroggo): Use release version if debug is unavailable
+if [ ! -f out/Debug/pdfviewer ]
+then
+    echo 'debug version of pdfviewer is required.'
+    exit
+fi
+
+if [ -z $1 ]
+then
+    echo 'folder is a required argument.'
+    exit
+fi
+
+if [ ! -d $1 ]
+then
+    echo 'folder must be a valid directory.'
+    exit
+fi
+
+# Create the directory to contain the new results. If old new results exist, remove them.
+if [ -d $1/new ]
+then
+    rm -rf $1/new
+fi
+
+mkdir $1/new/
+
+# Run the script to read each PDF and convert it to a PNG.
+if command -v parallel >/dev/null 2>&1
+then
+    echo 'Running in parallel'
+    ls -1 $1/*.pdf | sed "s/^/experimental\/PdfViewer\/scripts\/vm_pdf_viewer_run_one_pdf.sh /" \
+        | parallel
+else
+    echo 'Converting each file sequentially. Install "parallel" to convert in parallel.'
+    ls -1 $1/*.pdf | xargs experimental/PdfViewer/scripts/vm_pdf_viewer_run_one_pdf.sh
+fi
+
+# Next, compare to the old results. Exit now if there is no folder with old results.
+if [ ! -d $1/old ]
+then
+    exit
+fi
+
+# Check to make sure that skdiff has been built.
+RELEASE_SKDIFF=out/Release/skdiff
+DEBUG_SKDIFF=out/Debug/skdiff
+if [ -f $RELEASE_SKDIFF ]
+then
+    SKDIFF=$RELEASE_SKDIFF
+elif [ -f $DEBUG_SKDIFF ]
+then
+    SKDIFF=$DEBUG_SKDIFF
+else
+    echo 'Build skdiff in order to do comparisons.'
+    exit
+fi
+
+# Create the diff folder, after deleting old diffs if necessary.
+if [ -d $1/d ]
+then
+    rm -rf $1/d
+fi
+
+mkdir $1/d
+
+$SKDIFF $1/old $1/new $1/d