mirror of
https://github.com/moparisthebest/hexchat
synced 2024-11-13 21:05:02 -05:00
326 lines
8.2 KiB
Perl
326 lines
8.2 KiB
Perl
package Xchat::Embed;
|
|
use strict;
|
|
use warnings;
|
|
# list of loaded scripts keyed by their package names
|
|
# The package names are generated from the filename of the script using
|
|
# the file2pkg() function.
|
|
# The values of this hash are hash references with the following keys:
|
|
# filename
|
|
# The full path to the script.
|
|
# gui_entry
|
|
# This is xchat_plugin pointer that is used to remove the script from
|
|
# Plugins and Scripts window when a script is unloaded. This has also
|
|
# been converted with the PTR2IV() macro.
|
|
# hooks
|
|
# This is an array of hooks that are associated with this script.
|
|
# These are pointers that have been converted with the PTR2IV() macro.
|
|
# inner_packages
|
|
# Other packages that are defined in a script. This is not recommended
|
|
# partly because these will also get removed when a script is unloaded.
|
|
# loaded_at
|
|
# A timestamp of when the script was loaded. The value is whatever
|
|
# Time::HiRes::time() returns. This is used to retain load order when
|
|
# using the RELOADALL command.
|
|
# shutdown
|
|
# This is either a code ref or undef. It will be executed just before a
|
|
# script is unloaded.
|
|
our %scripts;
|
|
|
|
# This is a mapping of "inner package" => "containing script package"
|
|
our %owner_package;
|
|
|
|
# used to keep track of which package a hook belongs to, if the normal way of
|
|
# checking which script is calling a hook function fails this will be used
|
|
# instead. When a hook is created this will be copied to the HookData structure
|
|
# and when a callback is invoked this it will be used to set this value.
|
|
our $current_package;
|
|
|
|
sub load {
|
|
my $file = expand_homedir( shift @_ );
|
|
my $package = file2pkg( $file );
|
|
|
|
if( exists $scripts{$package} ) {
|
|
my $pkg_info = pkg_info( $package );
|
|
my $filename = File::Basename::basename( $pkg_info->{filename} );
|
|
Xchat::printf(
|
|
qq{'%s' already loaded from '%s'.\n},
|
|
$filename, $pkg_info->{filename}
|
|
);
|
|
Xchat::print(
|
|
'If this is a different script then it rename and try '.
|
|
'loading it again.'
|
|
);
|
|
return 2;
|
|
}
|
|
|
|
if( open my $source_handle, $file ) {
|
|
my $source = do {local $/; <$source_handle>};
|
|
close $source_handle;
|
|
# we shouldn't care about things after __END__
|
|
$source =~ s/^__END__.*//ms;
|
|
|
|
# this must come before the eval or the filename will not be found in
|
|
# Xchat::register
|
|
$scripts{$package}{filename} = $file;
|
|
$scripts{$package}{loaded_at} = Time::HiRes::time();
|
|
|
|
# this must be done before the error check so the unload will remove
|
|
# any inner packages defined by the script. if a script fails to load
|
|
# then any inner packages need to be removed as well.
|
|
my @inner_packages = $source =~
|
|
m/^\s*package \s+
|
|
((?:[^\W:]+(?:::)?)+)\s*? # package name
|
|
# strict version number
|
|
(?:\d+(?:[.]\d+) # positive integer or decimal-fraction
|
|
|v\d+(?:[.]\d+){2,})? # dotted-decimal v-string
|
|
[{;]
|
|
/mgx;
|
|
|
|
# check if any inner package defined in the to be loaded script has
|
|
# already been defined by another script
|
|
my @conflicts;
|
|
for my $inner ( @inner_packages ) {
|
|
if( exists $owner_package{ $inner } ) {
|
|
push @conflicts, $inner;
|
|
}
|
|
}
|
|
|
|
# report conflicts and bail out
|
|
if( @conflicts ) {
|
|
my $error_message =
|
|
"'$file' won't be loaded due to conflicting inner packages:\n";
|
|
for my $conflict_package ( @conflicts ) {
|
|
$error_message .= " $conflict_package already defined in " .
|
|
pkg_info($owner_package{ $conflict_package })->{filename}."\n";
|
|
}
|
|
Xchat::print( $error_message );
|
|
|
|
return 2;
|
|
}
|
|
|
|
my $full_path = File::Spec->rel2abs( $file );
|
|
$source =~ s/^/#line 1 "$full_path"\n\x7Bpackage $package;/;
|
|
|
|
# make sure we add the closing } even if the last line is a comment
|
|
if( $source =~ /^#.*\Z/m ) {
|
|
$source =~ s/^(?=#.*\Z)/\x7D/m;
|
|
} else {
|
|
$source =~ s/\Z/\x7D/;
|
|
}
|
|
|
|
$scripts{$package}{inner_packages} = [ @inner_packages ];
|
|
@owner_package{ @inner_packages } = ($package) x @inner_packages;
|
|
_do_eval( $source );
|
|
|
|
unless( exists $scripts{$package}{gui_entry} ) {
|
|
$scripts{$package}{gui_entry} =
|
|
Xchat::Internal::register(
|
|
"", "unknown", "", $file
|
|
);
|
|
}
|
|
|
|
if( $@ ) {
|
|
# something went wrong
|
|
$@ =~ s/\(eval \d+\)/$file/g;
|
|
Xchat::print( "Error loading '$file':\n$@\n" );
|
|
# make sure the script list doesn't contain false information
|
|
unload( $scripts{$package}{filename} );
|
|
return 1;
|
|
}
|
|
} else {
|
|
Xchat::print( "Error opening '$file': $!\n" );
|
|
return 2;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
sub _do_eval {
|
|
no strict;
|
|
no warnings;
|
|
eval $_[0];
|
|
}
|
|
|
|
sub unload {
|
|
my $file = shift @_;
|
|
my $package = file2pkg( $file );
|
|
my $pkg_info = pkg_info( $package );
|
|
|
|
if( $pkg_info ) {
|
|
# take care of the shutdown callback
|
|
if( exists $pkg_info->{shutdown} ) {
|
|
# allow incorrectly written scripts to be unloaded
|
|
eval {
|
|
if( ref $pkg_info->{shutdown} eq 'CODE' ) {
|
|
$pkg_info->{shutdown}->();
|
|
} elsif ( $pkg_info->{shutdown} ) {
|
|
no strict 'refs';
|
|
&{$pkg_info->{shutdown}};
|
|
}
|
|
};
|
|
}
|
|
|
|
if( exists $pkg_info->{hooks} ) {
|
|
for my $hook ( @{$pkg_info->{hooks}} ) {
|
|
Xchat::unhook( $hook, $package );
|
|
}
|
|
}
|
|
|
|
if( exists $pkg_info->{gui_entry} ) {
|
|
plugingui_remove( $pkg_info->{gui_entry} );
|
|
}
|
|
|
|
delete @owner_package{ @{$pkg_info->{inner_packages}} };
|
|
for my $inner_package ( @{$pkg_info->{inner_packages}} ) {
|
|
Symbol::delete_package( $inner_package );
|
|
}
|
|
Symbol::delete_package( $package );
|
|
delete $scripts{$package};
|
|
return Xchat::EAT_ALL;
|
|
} else {
|
|
Xchat::print( qq{"$file" is not loaded.\n} );
|
|
return Xchat::EAT_NONE;
|
|
}
|
|
}
|
|
|
|
sub unload_all {
|
|
for my $package ( keys %scripts ) {
|
|
unload( $scripts{$package}->{filename} );
|
|
}
|
|
|
|
return Xchat::EAT_ALL;
|
|
}
|
|
|
|
sub reload {
|
|
my $file = shift @_;
|
|
my $package = file2pkg( $file );
|
|
my $pkg_info = pkg_info( $package );
|
|
my $fullpath = $file;
|
|
|
|
if( $pkg_info ) {
|
|
$fullpath = $pkg_info->{filename};
|
|
unload( $file );
|
|
}
|
|
|
|
load( $fullpath );
|
|
return Xchat::EAT_ALL;
|
|
}
|
|
|
|
sub reload_all {
|
|
my @dirs = Xchat::get_info( "xchatdirfs" ) || Xchat::get_info( "xchatdir" );
|
|
push @dirs, File::Spec->catdir( $dirs[0], "plugins" );
|
|
for my $dir ( @dirs ) {
|
|
my $auto_load_glob = File::Spec->catfile( $dir, "*.pl" );
|
|
my @scripts = map { $_->{filename} }
|
|
sort { $a->{loaded_at} <=> $b->{loaded_at} } values %scripts;
|
|
push @scripts, File::Glob::bsd_glob( $auto_load_glob );
|
|
|
|
my %seen;
|
|
@scripts = grep { !$seen{ $_ }++ } @scripts;
|
|
|
|
unload_all();
|
|
for my $script ( @scripts ) {
|
|
if( !pkg_info( file2pkg( $script ) ) ) {
|
|
load( $script );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
sub expand_homedir {
|
|
my $file = shift @_;
|
|
|
|
if ( $^O eq "MSWin32" ) {
|
|
$file =~ s/^~/$ENV{USERPROFILE}/;
|
|
} else {
|
|
$file =~ s{^~}{
|
|
(getpwuid($>))[7] || $ENV{HOME} || $ENV{LOGDIR}
|
|
}ex;
|
|
}
|
|
return $file;
|
|
}
|
|
|
|
sub file2pkg {
|
|
my $string = File::Basename::basename( shift @_ );
|
|
$string =~ s/\.pl$//i;
|
|
$string =~ s|([^A-Za-z0-9/])|'_'.unpack("H*",$1)|eg;
|
|
return "Xchat::Script::" . $string;
|
|
}
|
|
|
|
sub pkg_info {
|
|
my $package = shift @_;
|
|
return $scripts{$package};
|
|
}
|
|
|
|
sub find_external_pkg {
|
|
my $level = 1;
|
|
|
|
while( my @frame = caller( $level ) ) {
|
|
return @frame if $frame[0] !~ /(?:^IRC$|^Xchat)/;
|
|
$level++;
|
|
}
|
|
return;
|
|
}
|
|
|
|
sub find_pkg {
|
|
my $level = 1;
|
|
|
|
while( my ($package, $file, $line) = caller( $level ) ) {
|
|
return $package if $package =~ /^Xchat::Script::/;
|
|
$level++;
|
|
}
|
|
|
|
my $current_package = get_current_package();
|
|
if( defined $current_package ) {
|
|
return $current_package;
|
|
}
|
|
|
|
my @frame = find_external_pkg();
|
|
my $location;
|
|
|
|
if( $frame[0] or $frame[1] ) {
|
|
my $calling_package = $frame[0];
|
|
if( defined( my $owner = $owner_package{ $calling_package } ) ) {
|
|
return ($owner, $calling_package);
|
|
}
|
|
|
|
$location = $frame[1] ? $frame[1] : "package $frame[0]";
|
|
$location .= " line $frame[2]";
|
|
} else {
|
|
$location = "unknown location";
|
|
}
|
|
|
|
die "Unable to determine which script this hook belongs to. at $location\n";
|
|
|
|
}
|
|
|
|
# convert function names into code references
|
|
sub fix_callback {
|
|
my ($package, $calling_package, $callback) = @_;
|
|
|
|
unless( ref $callback ) {
|
|
unless( $callback =~ /::/ ) {
|
|
my $prefix = defined $calling_package ? $calling_package : $package;
|
|
$callback =~ s/^/${prefix}::/;
|
|
}
|
|
|
|
no strict 'subs';
|
|
$callback = \&{$callback};
|
|
}
|
|
|
|
return $callback;
|
|
}
|
|
|
|
sub get_current_package {
|
|
return $current_package;
|
|
}
|
|
|
|
sub set_current_package {
|
|
my $old_package = $current_package;
|
|
$current_package = shift;
|
|
|
|
return $old_package;
|
|
}
|
|
|
|
1
|