harfbuzz/test/shaping/record-test.sh

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#!/bin/bash
dir=`mktemp --directory`
hb_shape=$1
shift
fontfile=$1
shift
hb_shape="$hb_shape $@"
unicodes=`./hb-unicode-decode`
text=`./hb-unicode-encode "$unicodes"`
glyphs=`echo "$text" | $hb_shape "$fontfile"`
cp "$fontfile" "$dir/font.ttf"
pyftsubset \
--glyph-names \
"$dir/font.ttf" \
--text="$text"
if ! test -s "$dir/font.ttf.subset"; then
echo "Subsetter didn't produce nonempty subset font in $dir/font.ttf.subset" >&2
exit 2
fi
# Verify that subset font produces same glyphs!
glyphs_subset=`echo "$text" | $hb_shape "$dir/font.ttf.subset"`
if ! test "x$glyphs" = "x$glyphs_subset"; then
echo "Subset font produced different glyphs!" >&2
echo "Perhaps font doesn't have glyph names; checking visually..." >&2
hb_view=${hb_shape/shape/view}
echo "$text" | $hb_view "$dir/font.ttf" --output-format=png --output-file="$dir/orig.png"
echo "$text" | $hb_view "$dir/font.ttf.subset" --output-format=png --output-file="$dir/subset.png"
if ! cmp "$dir/orig.png" "$dir/subset.png"; then
echo "Images differ. Please inspect $dir/*.png." >&2
echo "$glyphs"
echo "$glyphs_subset"
exit 2
fi
echo "Yep; all good." >&2
rm -f "$dir/orig.png"
rm -f "$dir/subset.png"
glyphs=$glyphs_subset
fi
sha1sum=`sha1sum "$dir/font.ttf.subset" | cut -d' ' -f1`
subset="fonts/sha1sum/$sha1sum.ttf"
mv "$dir/font.ttf.subset" "$subset"
echo "$subset:$unicodes:$glyphs"
rm -f "$dir/font.ttf"
rmdir "$dir"