HarfBuzz text shaping engine
http://harfbuzz.github.io/
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
126 lines
3.3 KiB
126 lines
3.3 KiB
#!/bin/bash |
|
|
|
dir=`mktemp -d` |
|
|
|
if which sha1sum 2>/dev/null >/dev/null; then |
|
SHA1SUM=sha1sum |
|
elif which shasum 2>/dev/null >/dev/null; then |
|
SHA1SUM='shasum -a 1' |
|
elif which digest 2>/dev/null >/dev/null; then |
|
SHA1SUM='digest -a sha1' |
|
else |
|
echo "'sha1sum' not found" |
|
exit 2 |
|
fi |
|
|
|
out=/dev/stdout |
|
if test "x$1" == 'x-o'; then |
|
shift |
|
out=$1 |
|
shift |
|
fi |
|
hb_shape=$1 |
|
shift |
|
fontfile=$1 |
|
if test "x${fontfile:0:1}" == 'x-'; then |
|
echo "Specify font file before other options." >&2 |
|
exit 1 |
|
fi |
|
shift |
|
if ! echo "$hb_shape" | grep -q 'hb-shape'; then |
|
echo "Specify hb-shape (not hb-view, etc): got "$hb_shape"." >&2 |
|
exit 1 |
|
fi |
|
options= |
|
have_text=false |
|
for arg in "$@"; do |
|
if test "x${arg:0:1}" == 'x-'; then |
|
if echo "$arg" | grep -q ' '; then |
|
echo "Space in argument is not supported: '$arg'." >&2 |
|
exit 1 |
|
fi |
|
options="$options${options:+ }$arg" |
|
continue |
|
fi |
|
if $have_text; then |
|
echo "Too many arguments found... Use '=' notation for options: '$arg'" >&2 |
|
exit 1; |
|
fi |
|
text="$arg" |
|
have_text=true |
|
done |
|
if ! $have_text; then |
|
text=`cat` |
|
fi |
|
unicodes=`echo "$text" | ./hb-unicode-decode` |
|
glyphs=`echo "$text" | $hb_shape $options "$fontfile"` |
|
if test $? != 0; then |
|
echo "hb-shape failed." >&2 |
|
exit 2 |
|
fi |
|
glyph_ids=`echo "$text" | $hb_shape $options --no-glyph-names --no-clusters --no-positions "$fontfile" | sed 's/[][]//g; s/|/,/g'` |
|
|
|
cp "$fontfile" "$dir/font.ttf" |
|
echo fonttools subset \ |
|
--glyph-names \ |
|
--no-hinting \ |
|
--layout-features='*' \ |
|
"$dir/font.ttf" \ |
|
--gids="$glyph_ids" \ |
|
--text="$text" |
|
fonttools subset \ |
|
--glyph-names \ |
|
--no-hinting \ |
|
--layout-features='*' \ |
|
"$dir/font.ttf" \ |
|
--gids="$glyph_ids" \ |
|
--text="$text" |
|
if ! test -s "$dir/font.subset.ttf"; then |
|
echo "Subsetter didn't produce nonempty subset font in $dir/font.subset.ttf" >&2 |
|
exit 2 |
|
fi |
|
|
|
# Verify that subset font produces same glyphs! |
|
glyphs_subset=`echo "$text" | $hb_shape $options "$dir/font.subset.ttf"` |
|
|
|
if ! test "x$glyphs" = "x$glyphs_subset"; then |
|
echo "Subset font produced different glyphs!" >&2 |
|
echo "Perhaps font doesn't have glyph names; checking visually..." >&2 |
|
hb_view=${hb_shape/shape/view} |
|
echo "$text" | $hb_view $options "$dir/font.ttf" --output-format=png --output-file="$dir/orig.png" |
|
echo "$text" | $hb_view $options "$dir/font.subset.ttf" --output-format=png --output-file="$dir/subset.png" |
|
if ! cmp "$dir/orig.png" "$dir/subset.png"; then |
|
echo "Images differ. Please inspect $dir/*.png." >&2 |
|
echo "$glyphs" >> "$out" |
|
echo "$glyphs_subset" >> "$out" |
|
exit 2 |
|
fi |
|
echo "Yep; all good." >&2 |
|
rm -f "$dir/orig.png" |
|
rm -f "$dir/subset.png" |
|
glyphs=$glyphs_subset |
|
fi |
|
|
|
sha1sum=`$SHA1SUM "$dir/font.subset.ttf" | cut -d' ' -f1` |
|
subset="data/in-house/fonts/$sha1sum.ttf" |
|
mv "$dir/font.subset.ttf" "$subset" |
|
|
|
# There ought to be an easier way to do this, but it escapes me... |
|
unicodes_file=`mktemp` |
|
glyphs_file=`mktemp` |
|
echo "$unicodes" > "$unicodes_file" |
|
echo "$glyphs" > "$glyphs_file" |
|
# Open the "file"s |
|
exec 3<"$unicodes_file" |
|
exec 4<"$glyphs_file" |
|
relative_subset="$subset" |
|
if test "$out" != "/dev/stdout"; then |
|
relative_subset="$(/usr/bin/env python3 -c 'import os, sys; print (os.path.relpath (sys.argv[1], sys.argv[2]))' "$subset" "$(dirname "$out")")" |
|
fi |
|
while read uline <&3 && read gline <&4; do |
|
echo "$relative_subset:$options:$uline:$gline" >> "$out" |
|
done |
|
|
|
|
|
rm -f "$dir/font.ttf" |
|
rmdir "$dir"
|
|
|