129 lines
3.3 KiB
Bash
Executable File
129 lines
3.3 KiB
Bash
Executable File
#!/bin/bash
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dir=`mktemp -d`
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if which sha1sum 2>/dev/null >/dev/null; then
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SHA1SUM=sha1sum
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elif which shasum 2>/dev/null >/dev/null; then
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SHA1SUM='shasum -a 1'
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elif which digest 2>/dev/null >/dev/null; then
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SHA1SUM='digest -a sha1'
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else
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echo "'sha1sum' not found"
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exit 2
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fi
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out=/dev/stdout
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if test "x$1" == 'x-o'; then
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shift
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out=$1
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shift
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fi
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hb_shape=$1
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shift
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fontfile=$1
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if test "x${fontfile:0:1}" == 'x-'; then
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echo "Specify font file before other options." >&2
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exit 1
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fi
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shift
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if ! echo "$hb_shape" | grep -q 'hb-shape'; then
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echo "Specify hb-shape (not hb-view, etc): got "$hb_shape"." >&2
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exit 1
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fi
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options=
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have_text=false
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for arg in "$@"; do
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if test "x${arg:0:1}" == 'x-'; then
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if echo "$arg" | grep -q ' '; then
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echo "Space in argument is not supported: '$arg'." >&2
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exit 1
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fi
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options="$options${options:+ }$arg"
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continue
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fi
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if $have_text; then
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echo "Too many arguments found... Use '=' notation for options: '$arg'" >&2
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exit 1;
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fi
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text="$arg"
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have_text=true
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done
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if ! $have_text; then
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text=`cat`
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fi
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unicodes=`echo "$text" | ./hb-unicode-decode`
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glyphs=`echo "$text" | $hb_shape $options "$fontfile"`
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if test $? != 0; then
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echo "hb-shape failed." >&2
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exit 2
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fi
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glyph_ids=`echo "$text" | $hb_shape $options --no-glyph-names --no-clusters --no-positions "$fontfile" | sed 's/[][]//g; s/|/,/g'`
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cp "$fontfile" "$dir/font.ttf"
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echo fonttools subset \
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--glyph-names \
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--no-hinting \
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--layout-features='*' \
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--gids="$glyph_ids" \
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--text="$text" \
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--output-file="$dir/font.subset.ttf" \
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"$dir/font.ttf"
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fonttools subset \
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--glyph-names \
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--no-hinting \
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--layout-features='*' \
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--gids="$glyph_ids" \
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--text="$text" \
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--output-file="$dir/font.subset.ttf" \
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"$dir/font.ttf"
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if ! test -s "$dir/font.subset.ttf"; then
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echo "Subsetter didn't produce nonempty subset font in $dir/font.subset.ttf" >&2
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exit 2
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fi
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# Verify that subset font produces same glyphs!
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glyphs_subset=`echo "$text" | $hb_shape $options "$dir/font.subset.ttf"`
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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 $options "$dir/font.ttf" --output-format=png --output-file="$dir/orig.png"
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echo "$text" | $hb_view $options "$dir/font.subset.ttf" --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" >> "$out"
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echo "$glyphs_subset" >> "$out"
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exit 2
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fi
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echo "Yep; all good." >&2
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rm -f "$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.subset.ttf" | cut -d' ' -f1`
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subset="data/in-house/fonts/$sha1sum.ttf"
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mv "$dir/font.subset.ttf" "$subset"
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# There ought to be an easier way to do this, but it escapes me...
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unicodes_file=`mktemp`
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glyphs_file=`mktemp`
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echo "$unicodes" > "$unicodes_file"
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echo "$glyphs" > "$glyphs_file"
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# Open the "file"s
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exec 3<"$unicodes_file"
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exec 4<"$glyphs_file"
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relative_subset="$subset"
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if test "$out" != "/dev/stdout"; then
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relative_subset="$(/usr/bin/env python3 -c 'import os, sys; print (os.path.relpath (sys.argv[1], sys.argv[2]))' "$subset" "$(dirname "$out")")"
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fi
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while read uline <&3 && read gline <&4; do
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echo "$relative_subset;$options;$uline;$gline" >> "$out"
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done
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rm -f "$dir/font.ttf"
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rmdir "$dir"
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