generate-forwarding-headers.pl [plain text]
use strict;
use warnings;
use Cwd qw(abs_path realpath);
use File::Find;
use File::Basename;
use File::Path qw(mkpath);
use File::Spec::Functions;
use Getopt::Long;
my $srcRoot = realpath(File::Spec->catfile(dirname(abs_path($0)), "../.."));
my @platformPrefixes = ("ca", "cf", "cocoa", "Cocoa", "curl", "gtk", "ios", "mac", "playstation", "soup", "win", "wpe");
my @frameworks = ("WebKit");
my @skippedPrefixes = ("PAL");
my @frameworkHeaders;
my $framework;
my %neededHeaders;
my $verbose = 0;
my @incFromRoot;
my $outputDirectory;
my @platform;
my %options = (
'include-path=s' => \@incFromRoot,
'output=s' => \$outputDirectory,
'platform=s' => \@platform
);
GetOptions(%options);
foreach my $prefix (@platformPrefixes) {
push(@skippedPrefixes, $prefix) if grep($_ =~ "$prefix", @platform) == 0;
}
foreach (@frameworks) {
$framework = $_;
@frameworkHeaders = ();
%neededHeaders = ();
foreach (@incFromRoot) { find(\&collectNeededHeaders, abs_path($_) ); };
find(\&collectFrameworkHeaderPaths, File::Spec->catfile($srcRoot, $framework));
createForwardingHeadersForFramework();
}
sub collectNeededHeaders {
my $filePath = $File::Find::name;
my $file = $_;
if ($filePath =~ '\.h$|\.cpp$|\.c$') {
open(FILE, "<$file") or die "Could not open $filePath.\n";
while (<FILE>) {
if (m/^ $neededHeaders{$1} = 1;
}
}
close(FILE);
}
}
sub collectFrameworkHeaderPaths {
my $filePath = $File::Find::name;
my $file = $_;
if ($filePath =~ '\.h$' && $filePath !~ "ForwardingHeaders" && grep{$file eq $_} keys %neededHeaders) {
my $headerPath = substr($filePath, length(File::Spec->catfile($srcRoot, $framework)) + 1 );
push(@frameworkHeaders, $headerPath) unless (grep($headerPath =~ "$_/", @skippedPrefixes) || $headerPath =~ "config.h");
}
}
sub createForwardingHeadersForFramework {
my $targetDirectory = File::Spec->catfile($outputDirectory, $framework);
mkpath($targetDirectory);
foreach my $header (@frameworkHeaders) {
my $headerName = basename($header);
my @headers = grep($_ =~ "/$headerName\$", @frameworkHeaders);
if (@headers != 1) {
print("ERROR: Can't create $headerName forwarding header, because there are more headers with the same name:\n");
foreach (@headers) { print " - $_\n" };
die();
}
my $forwardingHeaderPath = File::Spec->catfile($targetDirectory, $headerName);
my $expectedIncludeStatement = "#include \"$framework/$header\"";
my $foundIncludeStatement = 0;
$foundIncludeStatement = <EXISTING_HEADER> if open(EXISTING_HEADER, "<$forwardingHeaderPath");
chomp($foundIncludeStatement);
if (! $foundIncludeStatement || $foundIncludeStatement ne $expectedIncludeStatement) {
print "[Creating forwarding header for $framework/$header]\n" if $verbose;
open(FORWARDING_HEADER, ">$forwardingHeaderPath") or die "Could not open $forwardingHeaderPath.";
print FORWARDING_HEADER "$expectedIncludeStatement\n";
close(FORWARDING_HEADER);
}
close(EXISTING_HEADER);
}
}