1 #!/bin/bash 2 3 dir=`mktemp --directory` 4 5 hb_shape=$1 6 shift 7 fontfile=$1 8 shift 9 hb_shape="$hb_shape $@" 10 unicodes=`./hb-unicode-decode` 11 text=`./hb-unicode-encode "$unicodes"` 12 glyphs=`echo "$text" | $hb_shape "$fontfile"` 13 14 cp "$fontfile" "$dir/font.ttf" 15 pyftsubset \ 16 --glyph-names \ 17 "$dir/font.ttf" \ 18 --text="$text" 19 if ! test -s "$dir/font.ttf.subset"; then 20 echo "Subsetter didn't produce nonempty subset font in $dir/font.ttf.subset" >&2 21 exit 2 22 fi 23 24 # Verify that subset font produces same glyphs! 25 glyphs_subset=`echo "$text" | $hb_shape "$dir/font.ttf.subset"` 26 27 if ! test "x$glyphs" = "x$glyphs_subset"; then 28 echo "Subset font produced different glyphs!" >&2 29 echo "Perhaps font doesn't have glyph names; checking visually..." >&2 30 hb_view=${hb_shape/shape/view} 31 echo "$text" | $hb_view "$dir/font.ttf" --output-format=png --output-file="$dir/orig.png" 32 echo "$text" | $hb_view "$dir/font.ttf.subset" --output-format=png --output-file="$dir/subset.png" 33 if ! cmp "$dir/orig.png" "$dir/subset.png"; then 34 echo "Images differ. Please inspect $dir/*.png." >&2 35 echo "$glyphs" 36 echo "$glyphs_subset" 37 exit 2 38 fi 39 echo "Yep; all good." >&2 40 rm -f "$dir/orig.png" 41 rm -f "$dir/subset.png" 42 glyphs=$glyphs_subset 43 fi 44 45 sha1sum=`sha1sum "$dir/font.ttf.subset" | cut -d' ' -f1` 46 subset="fonts/sha1sum/$sha1sum.ttf" 47 mv "$dir/font.ttf.subset" "$subset" 48 49 echo "$subset:$unicodes:$glyphs" 50 51 rm -f "$dir/font.ttf" 52 rmdir "$dir" 53
