1 #!/bin/bash 2 3 dir=`mktemp --directory` 4 5 hb_shape=$1 6 shift 7 fontfile=$1 8 if test "x${fontfile:0:1}" == 'x-'; then 9 echo "Specify font file before other options." >&2 10 exit 1 11 fi 12 shift 13 if ! echo "$hb_shape" | grep -q 'hb-shape'; then 14 echo "Specify hb-shape (not hb-view, etc)." >&2 15 exit 1 16 fi 17 options= 18 have_text=false 19 for arg in "$@"; do 20 if test "x${arg:0:1}" == 'x-'; then 21 if echo "$arg" | grep -q ' '; then 22 echo "Space in argument is not supported: '$arg'." >&2 23 exit 1 24 fi 25 options="$options${options:+ }$arg" 26 continue 27 fi 28 if $have_text; then 29 echo "Too many arguments found... Use '=' notation for options: '$arg'" >&2 30 exit 1; 31 fi 32 text="$arg" 33 have_text=true 34 done 35 if ! $have_text; then 36 text=`cat` 37 fi 38 unicodes=`echo "$text" | ./hb-unicode-decode` 39 glyphs=`echo "$text" | $hb_shape $options "$fontfile"` 40 if test $? != 0; then 41 echo "hb-shape failed." >&2 42 exit 2 43 fi 44 45 cp "$fontfile" "$dir/font.ttf" 46 pyftsubset \ 47 --glyph-names \ 48 --no-hinting \ 49 "$dir/font.ttf" \ 50 --text="$text" 51 if ! test -s "$dir/font.ttf.subset"; then 52 echo "Subsetter didn't produce nonempty subset font in $dir/font.ttf.subset" >&2 53 exit 2 54 fi 55 56 # Verify that subset font produces same glyphs! 57 glyphs_subset=`echo "$text" | $hb_shape $options "$dir/font.ttf.subset"` 58 59 if ! test "x$glyphs" = "x$glyphs_subset"; then 60 echo "Subset font produced different glyphs!" >&2 61 echo "Perhaps font doesn't have glyph names; checking visually..." >&2 62 hb_view=${hb_shape/shape/view} 63 echo "$text" | $hb_view $options "$dir/font.ttf" --output-format=png --output-file="$dir/orig.png" 64 echo "$text" | $hb_view $options "$dir/font.ttf.subset" --output-format=png --output-file="$dir/subset.png" 65 if ! cmp "$dir/orig.png" "$dir/subset.png"; then 66 echo "Images differ. Please inspect $dir/*.png." >&2 67 echo "$glyphs" 68 echo "$glyphs_subset" 69 exit 2 70 fi 71 echo "Yep; all good." >&2 72 rm -f "$dir/orig.png" 73 rm -f "$dir/subset.png" 74 glyphs=$glyphs_subset 75 fi 76 77 sha1sum=`sha1sum "$dir/font.ttf.subset" | cut -d' ' -f1` 78 subset="fonts/sha1sum/$sha1sum.ttf" 79 mv "$dir/font.ttf.subset" "$subset" 80 81 # There ought to be an easier way to do this, but it escapes me... 82 unicodes_file=`mktemp` 83 glyphs_file=`mktemp` 84 echo "$unicodes" > "$unicodes_file" 85 echo "$glyphs" > "$glyphs_file" 86 # Open the "file"s 87 exec 3<"$unicodes_file" 88 exec 4<"$glyphs_file" 89 while read uline <&3 && read gline <&4; do 90 echo "$subset:$options:$uline:$gline" 91 done 92 93 94 rm -f "$dir/font.ttf" 95 rmdir "$dir" 96
