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_subset=$1 23shift 24hb_shape=$1 25shift 26fontfile=$1 27if test "x${fontfile:0:1}" == 'x-'; then 28 echo "Specify font file before other options." >&2 29 exit 1 30fi 31shift 32if ! echo "$hb_subset" | grep -q 'subset'; then 33 echo "Specify hb-subset (or \"fonttools subset\"): got "$hb_subset"." >&2 34 exit 1 35fi 36if ! echo "$hb_shape" | grep -q 'hb-shape'; then 37 echo "Specify hb-shape (not hb-view, etc): got "$hb_shape"." >&2 38 exit 1 39fi 40options= 41have_text=false 42for arg in "$@"; do 43 if test "x${arg:0:1}" == 'x-'; then 44 if echo "$arg" | grep -q ' '; then 45 echo "Space in argument is not supported: '$arg'." >&2 46 exit 1 47 fi 48 options="$options${options:+ }$arg" 49 continue 50 fi 51 if $have_text; then 52 echo "Too many arguments found... Use '=' notation for options: '$arg'" >&2 53 exit 1; 54 fi 55 text="$arg" 56 have_text=true 57done 58if ! $have_text; then 59 text=`cat` 60fi 61unicodes=`echo "$text" | ./hb-unicode-decode` 62glyphs=`echo "$text" | $hb_shape $options "$fontfile"` 63if test $? != 0; then 64 echo "hb-shape failed." >&2 65 exit 2 66fi 67glyph_ids=`echo "$text" | $hb_shape $options --no-glyph-names --no-clusters --no-positions "$fontfile" | sed 's/[][]//g; s/|/,/g'` 68 69cp "$fontfile" "$dir/font.ttf" 70echo $hb_subset \ 71 --glyph-names \ 72 --no-hinting \ 73 --layout-features='*' \ 74 --gids="$glyph_ids" \ 75 --text="$text" \ 76 --output-file="$dir/font.subset.ttf" \ 77 "$dir/font.ttf" 78$hb_subset \ 79 --glyph-names \ 80 --no-hinting \ 81 --layout-features='*' \ 82 --gids="$glyph_ids" \ 83 --text="$text" \ 84 --output-file="$dir/font.subset.ttf" \ 85 "$dir/font.ttf" 86if ! test -s "$dir/font.subset.ttf"; then 87 echo "Subsetter didn't produce nonempty subset font in $dir/font.subset.ttf" >&2 88 exit 2 89fi 90 91# Verify that subset font produces same glyphs! 92glyphs_subset=`echo "$text" | $hb_shape $options "$dir/font.subset.ttf"` 93 94if ! test "x$glyphs" = "x$glyphs_subset"; then 95 echo "Subset font produced different glyphs!" >&2 96 echo "Perhaps font doesn't have glyph names; checking visually..." >&2 97 hb_view=${hb_shape/shape/view} 98 echo "$text" | $hb_view $options "$dir/font.ttf" --output-format=png --output-file="$dir/orig.png" 99 echo "$text" | $hb_view $options "$dir/font.subset.ttf" --output-format=png --output-file="$dir/subset.png" 100 if ! cmp "$dir/orig.png" "$dir/subset.png"; then 101 echo "Images differ. Please inspect $dir/*.png." >&2 102 echo "$glyphs" >> "$out" 103 echo "$glyphs_subset" >> "$out" 104 exit 2 105 fi 106 echo "Yep; all good." >&2 107 rm -f "$dir/orig.png" 108 rm -f "$dir/subset.png" 109 glyphs=$glyphs_subset 110fi 111 112sha1sum=`$SHA1SUM "$dir/font.subset.ttf" | cut -d' ' -f1` 113subset="data/in-house/fonts/$sha1sum.ttf" 114mv "$dir/font.subset.ttf" "$subset" 115 116# There ought to be an easier way to do this, but it escapes me... 117unicodes_file=`mktemp` 118glyphs_file=`mktemp` 119echo "$unicodes" > "$unicodes_file" 120echo "$glyphs" > "$glyphs_file" 121# Open the "file"s 122exec 3<"$unicodes_file" 123exec 4<"$glyphs_file" 124relative_subset="$subset" 125if test "$out" != "/dev/stdout"; then 126 relative_subset="$(/usr/bin/env python3 -c 'import os, sys; print (os.path.relpath (sys.argv[1], sys.argv[2]))' "$subset" "$(dirname "$out")")" 127fi 128while read uline <&3 && read gline <&4; do 129 echo "$relative_subset;$options;$uline;$gline" >> "$out" 130done 131 132 133rm -f "$dir/font.ttf" 134rmdir "$dir" 135
