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