kc3-lang/harfbuzz/perf/hb-draw-compare

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• Hash : 97103688
  Author :
  Date : 2025-07-11T00:30:48
  

  [perf/hb-draw-compare] Default font-funcs2 to fontations
  
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• perf/hb-draw-compare

• #!/bin/bash
  
  trap "exit" INT
  
  dirname=`dirname "$0"`
  
  # Parse options
  output_dir=
  font_file=
  face_index=0
  hb_view=hb-view
  hb_info=hb-info
  hb_svg_compare=$dirname/hb-svg-compare
  tolerance=0
  font_size=upem
  features=
  variations=
  face_loader=ot
  shaper=ot
  font_funcs1=ot
  font_funcs2=fontations
  clear1=false
  clear2=false
  unicodes=
  glyphs=
  quiet=false
  help=false
  while test $# -gt 0; do
  	case "$1" in
  		-o|--output-dir)
  			shift
  			output_dir=$1
  			shift
  			;;
  		--font-file)
  			shift
  			font_file=$1
  			shift
  			;;
  		--face-index)
  			shift
  			face_index=$1
  			shift
  			;;
  		--hb-view)
  			shift
  			hb_view=$1
  			shift
  			;;
  		--hb-info)
  			shift
  			hb_info=$1
  			shift
  			;;
  		--hb-svg-compare)
  			shift
  			hb_svg_compare=$1
  			shift
  			;;
  		--tolerance)
  			shift
  			tolerance=$1
  			shift
  			;;
  		--font-size)
  			shift
  			font_size=$1
  			shift
  			;;
  		--features)
  			shift
  			features=$1
  			shift
  			;;
  		--variations)
  			shift
  			variations=$1
  			shift
  			;;
  		--unicodes)
  			shift
  			unicodes=$1
  			shift
  			;;
  		--face-loader)
  			shift
  			face_loader=$1
  			shift
  			;;
  		--shaper)
  			shift
  			shaper=$1
  			shift
  			;;
  		--font-funcs1)
  			shift
  			font_funcs1=$1
  			shift
  			;;
  		--font-funcs2)
  			shift
  			font_funcs2=$1
  			shift
  			;;
  		--clear1)
  			shift
  			clear1=true
  			;;
  		--clear2)
  			shift
  			clear2=true
  			;;
  		--quiet)
  			quiet=true
  			shift
  			;;
  		--help)
  			help=true
  			shift
  			;;
  		*)
  			if test "x$font_file" == x; then
  				font_file=$1
  				shift
  			else
  				glyphs="$glyphs $1"
  				shift
  			fi
  			;;
  	esac
  done
  
  if $help; then
  	cmd=`basename "$0"`
  	echo "Usage: $cmd [OPTIONS] FONTFILE [GLYPH...]"
  	echo "Render a font with two font backends and compare the results."
  	echo
  	echo "Options:"
  	echo "  -o, --output-dir DIR: Output in DIR"
  	echo "  --font-file FONTFILE: Font file to render"
  	echo "  --hb-view HB_VIEW: Path to hb-view; default $hb_view"
  	echo "  --hb-info HB_INFO: Path to hb-info; default $hb_info"
  	echo "  --hb-svg-compare HB_SVG_COMPARE: Path to hb-svg-compare; default $hb_svg_compare"
  	echo "  --tolerance TOLERANCE: Tolerance for SVG comparison; default $tolerance"
  	echo "  --font-size SIZE: Font size; default $font_size"
  	echo "  --features FEATURES: Font features; default none"
  	echo "  --variations VARIATIONS: Font variations; default none"
  	echo "  --face-loader: Face loader; default $face_loader"
  	echo "  --shaper: Shaper; default $shaper"
  	echo "  --font-funcs0 font_funcs: First font-funcs; default $font_funcs1"
  	echo "  --font-funcs1 font_funcs: Second font-funcs; default $font_funcs2"
  	echo "  --clear1: Clear first font backend output if exists"
  	echo "  --clear2: Clear second font backend output if exists"
  	echo "  --unicodes CODES: Unicodes to render"
  	echo "  --quiet: Quiet mode"
  	echo "  --help: Print help"
  	exit 0
  fi
  
  if test "x$font_file" == x; then
  	echo "No font file specified." >&2
  	exit 2
  fi
  if ! which "$hb_view" 2>/dev/null >/dev/null; then
  	echo "'$hb_view' not found" >&2
  	exit 2
  fi
  if ! which "$hb_info" 2>/dev/null >/dev/null; then
  	echo "'$hb_info' not found" >&2
  	exit 2
  fi
  if ! test -f "$font_file"; then
  	echo "Font file '$font_file' not found" >&2
  	exit 2
  fi
  
  # Sanity check Unicode values
  if test "x$unicodes" != x; then
  	echo "$unicodes" |
  	tr ' ' '\n' |
  	grep -v '^U[+][0-9a-fA-F]\+$' &&
  	{
  		echo "Invalid Unicode values" >&2
  		exit 2
  	}
  fi
  
  $quiet || echo "Comparing '$font_file' with '$font_funcs1' and '$font_funcs2' font backends. " >&2
  
  if test "x$output_dir" == x; then
  	output_dir=`mktemp -d`
  	echo "Output in '$output_dir'" >&2
  fi
  mkdir -p "$output_dir" || exit 1
  
  # Populate glyphs file
  glyphs_file="$output_dir/glyphs"
  > "$glyphs_file"
  echo "$unicodes" |
  sed 's/^U+//' |
  grep . |
  while read unicode; do
  	echo "uni$unicode"
  done >> "$glyphs_file"
  echo "$glyphs" |
  tr ' ' '\n' |
  grep . >> "$glyphs_file"
  if test "x$unicodes" == x -a "x$glyphs" == x; then
  	$quiet || echo "No unicodes or glyphs specified. Comparing all glyphs in the font." >&2
  	num_glyphs=`$hb_info --quiet --show-glyph-count "$font_file"`
  	$quiet || echo "Font has $num_glyphs glyphs." >&2
  	seq 0 $((num_glyphs - 1)) |
  	sed 's/^/gid/' >> "$glyphs_file"
  fi
  num_glyphs=`cat "$glyphs_file" | wc -l`
  
  flavor=
  if test "$features" != ""; then
  	flavor="$flavor.features=$features"
  fi
  if test "$variations" != ""; then
  	flavor="$flavor.variations=$variations"
  fi
  
  # Render with both font backends
  if $clear1; then
  	funcs_prefix="$output_dir/$font_funcs1$flavor"
  	$quiet || echo "Clearing '$funcs_prefix'... " >&2
  	rm -rf "$funcs_prefix"
  fi
  if $clear2; then
  	funcs_prefix="$output_dir/$font_funcs2$flavor"
  	$quiet || echo "Clearing '$funcs_prefix'... " >&2
  	rm -rf "$funcs_prefix"
  fi
  for font_funcs in "$font_funcs1" "$font_funcs2"; do
  	test "x$font_funcs" == x && continue
  	$quiet || echo "Rendering with font backend '$font_funcs'..." >&2
  
  	funcs_prefix="$output_dir/$font_funcs$flavor"
  	mkdir -p "$funcs_prefix"
  	count=0
  	cat "$glyphs_file" |
  	while read glyph; do
  		dir="$funcs_prefix"
  		svg="$dir/$glyph.svg"
  		if test -f "$svg"; then
  			continue
  		fi
  		count=$((count + 1))
  		if test $((count % 100)) == 0; then
  			$quiet || echo -n . >&2
  		fi
  		echo \
  			--font-file="$font_file" \
  			--face-index=$face_index \
  			--glyphs \
  			--face-loader=$face_loader \
  			--shaper=$this_shaper \
  			--font-funcs=$font_funcs \
  			--features="$features" \
  			--variations="$variations" \
  			--output-format=svg \
  			--font-size=$font_size \
  			--output-file="$svg" \
  			"$glyph"
  	done |
  	sed 's/ /;/g' |
  	"$hb_view" --batch >/dev/null
  	$quiet || echo "" >&2
  done
  
  test "x$font_funcs1" == x || test "x$font_funcs2" == x && exit 0
  
  diff="$output_dir/diff$flavor"
  rm -f "$diff"
  > "$diff"
  test "x$flavor" == x || ln -f -s "diff$flavor" "$output_dir/diff"
  $quiet || echo "Comparing SVGs into '$diff'..." >&2
  funcs1_prefix="$output_dir/$font_funcs1$flavor"
  funcs2_prefix="$output_dir/$font_funcs2$flavor"
  count=0
  cat "$glyphs_file" |
  while read glyph; do
  	count=$((count + 1))
  	if test $((count % 100)) == 0; then
  		$quiet || echo -n . >&2
  	fi
  
  	svg1="$funcs1_prefix/$glyph.svg"
  	svg2="$funcs2_prefix/$glyph.svg"
  
  	if ! test -f "$svg1" || ! test -f "$svg2"; then
  		echo -e "\n$glyph not rendered." >&2
  		exit 1
  	fi
  
  	echo -e "$svg1\t$svg2"
  done |
  "$hb_svg_compare" "$tolerance" |
  while read line; do
  	$quiet || echo -e "\n$line"
  	echo "$line" >> "$diff"
  done
  # Sort diff by error
  sort -n -o "$diff.tmp" "$diff" && mv "$diff.tmp" "$diff" || exit 1
  # Count number of differences
  num_diffs=`cat "$diff" | wc -l`
  $quiet || echo -e "\nFound $num_diffs differences in $num_glyphs glyphs." >&2
  

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