1#!/bin/bash 2 3dir=`mktemp -d` 4 5if which sha1sum 2>/dev/null >/dev/null; then 6 SHA1SUM=sha1sum 7elif which shasum 2>/dev/null >/dev/null; then 8 SHA1SUM='shasum -a 1' 9elif which digest 2>/dev/null >/dev/null; then 10 SHA1SUM='digest -a sha1' 11else 12 echo "'sha1sum' not found" 13 exit 2 14fi 15 16out=/dev/stdout 17if test "x$1" == 'x-o'; then 18 shift 19 out=$1 20 shift 21fi 22hb_shape=$1 23shift 24fontfile=$1 25if test "x${fontfile:0:1}" == 'x-'; then 26 echo "Specify font file before other options." >&2 27 exit 1 28fi 29shift 30if ! echo "$hb_shape" | grep -q 'hb-shape'; then 31 echo "Specify hb-shape (not hb-view, etc): got "$hb_shape"." >&2 32 exit 1 33fi 34options= 35have_text=false 36for arg in "$@"; do 37 if test "x${arg:0:1}" == 'x-'; then 38 if echo "$arg" | grep -q ' '; then 39 echo "Space in argument is not supported: '$arg'." >&2 40 exit 1 41 fi 42 options="$options${options:+ }$arg" 43 continue 44 fi 45 if $have_text; then 46 echo "Too many arguments found... Use '=' notation for options: '$arg'" >&2 47 exit 1; 48 fi 49 text="$arg" 50 have_text=true 51done 52if ! $have_text; then 53 text=`cat` 54fi 55unicodes=`echo "$text" | ./hb-unicode-decode` 56glyphs=`echo "$text" | $hb_shape $options "$fontfile"` 57if test $? != 0; then 58 echo "hb-shape failed." >&2 59 exit 2 60fi 61glyph_ids=`echo "$text" | $hb_shape $options --no-glyph-names --no-clusters --no-positions "$fontfile" | sed 's/[][]//g; s/|/,/g'` 62 63cp "$fontfile" "$dir/font.ttf" 64echo fonttools subset \ 65 --glyph-names \ 66 --no-hinting \ 67 --layout-features='*' \ 68 "$dir/font.ttf" \ 69 --gids="$glyph_ids" \ 70 --text="$text" 71fonttools subset \ 72 --glyph-names \ 73 --no-hinting \ 74 --layout-features='*' \ 75 "$dir/font.ttf" \ 76 --gids="$glyph_ids" \ 77 --text="$text" 78if ! test -s "$dir/font.subset.ttf"; then 79 echo "Subsetter didn't produce nonempty subset font in $dir/font.subset.ttf" >&2 80 exit 2 81fi 82 83# Verify that subset font produces same glyphs! 84glyphs_subset=`echo "$text" | $hb_shape $options "$dir/font.subset.ttf"` 85 86if ! test "x$glyphs" = "x$glyphs_subset"; then 87 echo "Subset font produced different glyphs!" >&2 88 echo "Perhaps font doesn't have glyph names; checking visually..." >&2 89 hb_view=${hb_shape/shape/view} 90 echo "$text" | $hb_view $options "$dir/font.ttf" --output-format=png --output-file="$dir/orig.png" 91 echo "$text" | $hb_view $options "$dir/font.subset.ttf" --output-format=png --output-file="$dir/subset.png" 92 if ! cmp "$dir/orig.png" "$dir/subset.png"; then 93 echo "Images differ. Please inspect $dir/*.png." >&2 94 echo "$glyphs" >> "$out" 95 echo "$glyphs_subset" >> "$out" 96 exit 2 97 fi 98 echo "Yep; all good." >&2 99 rm -f "$dir/orig.png" 100 rm -f "$dir/subset.png" 101 glyphs=$glyphs_subset 102fi 103 104sha1sum=`$SHA1SUM "$dir/font.subset.ttf" | cut -d' ' -f1` 105subset="data/in-house/fonts/$sha1sum.ttf" 106mv "$dir/font.subset.ttf" "$subset" 107 108# There ought to be an easier way to do this, but it escapes me... 109unicodes_file=`mktemp` 110glyphs_file=`mktemp` 111echo "$unicodes" > "$unicodes_file" 112echo "$glyphs" > "$glyphs_file" 113# Open the "file"s 114exec 3<"$unicodes_file" 115exec 4<"$glyphs_file" 116relative_subset="$subset" 117if test "$out" != "/dev/stdout"; then 118 relative_subset="$(/usr/bin/env python3 -c 'import os, sys; print (os.path.relpath (sys.argv[1], sys.argv[2]))' "$subset" "$(dirname "$out")")" 119fi 120while read uline <&3 && read gline <&4; do 121 echo "$relative_subset:$options:$uline:$gline" >> "$out" 122done 123 124 125rm -f "$dir/font.ttf" 126rmdir "$dir" 127
