gecko/gfx/tests/process-textruns.pl
2012-05-21 12:12:37 +01:00

138 lines
3.7 KiB
Perl
Executable File

#!/usr/bin/perl -w
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
# This script is a bunch of utilities for computing statistics about the textruns
# created during a Gecko run.
#
# Usage:
# 1) Uncomment #define DUMP_TEXT_RUNS in gfxAtsuiFonts.cpp
# 2) Build
# 3) Run over some test set, redirecting stdout to a file
# 4) Pipe that file through this script
# --exclude-spaces-only: ignore all textruns that consistent of zero or more
# spaces
my $exclude_spaces = grep(/^--exclude-spaces-only$/, @ARGV);
# --dump-runs: process textruns into a format that can be used by
# gfxTextRunPerfTest, print that on standard output, and do nothing else
my $dump_runs = grep(/^--dump-runs$/, @ARGV);
# --obfuscate: ROTL13 the textrun text
my $obfuscate = grep(/^--obfuscate$/, @ARGV);
my @textruns = ();
while (<STDIN>) {
if (/^0x(\w+)\((.*)\) TEXTRUN "(.*)" ENDTEXTRUN$/) {
my %tr = ( fontgroup => $1,
families => $2,
text => $3 );
push(@textruns, \%tr);
} elsif (/^0x(\w+)\((.*)\) TEXTRUN "(.*)$/) {
my %tr = ( fontgroup => $1,
families => $2 );
my $text = $3."\n";
while (<STDIN>) {
if (/^(.*)" ENDTEXTRUN$/) {
$text .= $1;
last;
}
$text .= $_;
}
$tr{text} = $text;
push(@textruns, \%tr);
}
}
my %quote = ( "\\" => 1, "\"" => 1 );
sub quote_str {
my ($text) = @_;
my @chars = split(//, $text);
my @strs = ();
foreach my $c (@chars) {
if (ord($c) >= 0x80) {
$c = "\\x".sprintf("%x",ord($c)).'""';
} elsif ($quote{$c}) {
$c = "\\$c";
} elsif ($c eq "\n") {
$c = " ";
}
push(@strs, $c);
}
return '"'.join("", @strs).'"';
}
if ($dump_runs) {
foreach my $tr (@textruns) {
print "{ ", &quote_str($tr->{families}), ",\n";
my $text = $tr->{text};
if ($obfuscate) {
$text =~ tr/a-mA-Mn-zN-Z/n-zN-Za-mA-M/;
}
print " ", &quote_str($text), " },\n";
}
exit(0);
}
my %trs_by_text = ();
my %trs_by_text_and_fontgroup = ();
my %trs_by_trimmed_text_and_fontgroup = ();
my @tr_lengths = ();
$trs_by_text{" "} = [];
$trs_by_text{""} = [];
sub trim {
my ($s) = @_;
$s =~ s/^ *//g;
$s =~ s/ *$//g;
return $s;
}
my $total_textruns = 0;
foreach my $tr (@textruns) {
if ($exclude_spaces && $tr->{text} =~ /^ *$/) {
next;
}
++$total_textruns;
push(@{$trs_by_text{$tr->{text}}}, $tr);
push(@{$trs_by_text_and_fontgroup{$tr->{fontgroup}.$tr->{text}}}, $tr);
push(@{$trs_by_trimmed_text_and_fontgroup{$tr->{fontgroup}.&trim($tr->{text})}}, $tr);
if (1 < scalar(@{$trs_by_trimmed_text_and_fontgroup{$tr->{fontgroup}.&trim($tr->{text})}})) {
$tr_lengths[length($tr->{text})]++;
}
}
print "Number of textruns:\t$total_textruns\n";
print "Number of textruns which are one space:\t", scalar(@{$trs_by_text{" "}}), "\n";
print "Number of textruns which are empty:\t", scalar(@{$trs_by_text{""}}), "\n";
my $count = 0;
foreach my $k (keys(%trs_by_text)) {
if ($k =~ /^ *$/) {
$count += @{$trs_by_text{$k}};
}
}
print "Number of textruns which are zero or more spaces:\t$count\n";
print "Number of unique textruns by text and fontgroup:\t", scalar(keys(%trs_by_text_and_fontgroup)), "\n";
print "Number of unique textruns by trimmed text and fontgroup:\t", scalar(keys(%trs_by_trimmed_text_and_fontgroup)), "\n";
my $sum = 0;
my $weighted_sum = 0;
if (1) {
print "Textrun length distribution:\n";
for my $i (0..(scalar(@tr_lengths)-1)) {
my $amount = defined($tr_lengths[$i])?$tr_lengths[$i]:0;
$sum += $amount;
$weighted_sum += $i*$amount;
print "$i\t$sum\t$weighted_sum\n";
}
}