124 lines
2.8 KiB
Bash
Executable File
124 lines
2.8 KiB
Bash
Executable File
#!/bin/sh
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# Copyright 2016 Google Inc.
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#
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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# This tool compares the PDF output of Skia's DM tool of two commits.
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CONTROL_COMMIT="$1"
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EXPERIMENT_COMMIT="$2"
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SOURCE="${3:-gm}" # could be 'skp'
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if ! [ "$1" ] || ! [ "$2" ]; then
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echo "usage:" >&2
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echo " $0 CONTROL_COMMIT EXPERIMENT_COMMIT [SOURCE]" >&2
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exit 1
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fi
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BAD=''
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for CMD in 'python' 'ninja' 'pdfium_test' 'skdiff'; do
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if ! command -v "$CMD" > /dev/null ; then
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echo "could not find $CMD command in PATH." >&2
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BAD=1
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fi
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done
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if [ "$BAD" ]; then exit 1; fi
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cd "$(dirname "$0")/.."
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if [ "$(git diff --shortstat)" ]; then
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echo "please stash your changes" >&2
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exit 1
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fi
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DIR=$(mktemp -d "${TMPDIR:-/tmp}/skpdf.XXXXXXXXXX")
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EXP="${DIR}/exp"
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CON="${DIR}/con"
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set -e
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git checkout "$EXPERIMENT_COMMIT"
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python bin/sync-and-gyp && ninja -C out/Release dm
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out/Release/dm --src "$SOURCE" --config pdf -w "$EXP"
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git checkout "$CONTROL_COMMIT"
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python bin/sync-and-gyp && ninja -C out/Release dm
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out/Release/dm --src "$SOURCE" --config pdf -w "$CON"
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set +e
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EXP_DIR="${EXP}/pdf/${SOURCE}"
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CON_DIR="${CON}/pdf/${SOURCE}"
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DIFFS=''
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# remove byte-identical PDFs
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for con in "$CON_DIR"/*pdf; do
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exp="$EXP_DIR/$(basename "$con")"
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if diff "$con" "$exp" > /dev/null; then
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rm "$con" "$exp" # no difference
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else
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echo "PDF differs: $(basename "$con")"
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DIFFS=1
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fi
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done
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if [ -z "$DIFFS" ]; then
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echo 'All PDFs are byte-identical!'
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rm -r "$DIR"
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exit 0;
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fi
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# Portable version of timeout from GNU coreutils.
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timeout_py() { python -c "$(cat <<EOF
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import sys, subprocess, threading
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proc = subprocess.Popen(sys.argv[2:])
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timer = threading.Timer(float(sys.argv[1]), proc.terminate)
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timer.start()
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proc.wait()
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timer.cancel()
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exit(proc.returncode)
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EOF
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)" "$@"; }
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# rasterize the remaining PDFs
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for pdf in "$CON_DIR"/*pdf "$EXP_DIR"/*pdf ; do
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if timeout_py 10 pdfium_test --png "$pdf"; then
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if ! [ -f "$pdf".*.png ] ; then
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echo "Missing pdfium_test output: '$pdf.*.png'" >&2
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exit 1
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fi
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rm "$pdf"
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else
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echo "pdfium_test '$pdf' failed."
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fi
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done
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DIFFS=''
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# remove byte-identical PNGs:
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for con in "$CON_DIR"/*.png; do
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exp="$EXP_DIR/$(basename "$con")"
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if diff "$con" "$exp"; then
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rm "$exp" "$con"
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else
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echo "PNG differs: $(basename "$con")"
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DIFFS=1
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fi
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done
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if [ -z "$DIFFS" ]; then
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echo 'All PNGs are byte-identical!'
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rm -r "$DIR"
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exit 0;
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fi
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# run remaining PNG files through skdiff:
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DIFF_DIR="${DIR}/skdiffout"
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skdiff "$CON_DIR" "$EXP_DIR" "$DIFF_DIR"
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echo "'$DIFF_DIR/index.html'"
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if [ $(uname) = 'Darwin' ] ; then
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open "$DIFF_DIR/index.html" # look at diffs
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elif [ $(uname) = 'Linux' ] ; then
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xdg-open "$DIFF_DIR/index.html" # look at diffs
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fi
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