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package Xconfig::parse; # $Id$
use diagnostics;
use strict;
use common;
sub read_XF86Config {
my ($file) = @_;
my $raw_X = raw_from_file($file);
from_raw(@$raw_X);
$raw_X;
}
sub write_XF86Config {
my ($raw_X, $file) = @_;
my @blocks = map { raw_to_string(before_to_string({ %$_ }, 0)) } @$raw_X;
@blocks ? output($file, @blocks) : unlink $file;
}
sub read_XF86Config_from_string {
my ($s) = @_;
my $raw_X = raw_from_file('-', [ split "\n", $s ]);
from_raw(@$raw_X);
$raw_X;
}
#-###############################################################################
#- raw reading/saving
#-###############################################################################
sub raw_from_file { #- internal
my ($file, $lines) = @_;
my $raw_X = [];
$lines ||= [ cat_($file) ];
my $line;
my $weird = sub { warn "$file:$line: strange $_[0]" };
my ($comment, $obj, @objs);
my $attach_comment = sub {
$obj || @objs or warn "$file:$line: can't attach comment\n";
if ($comment) {
$comment =~ s/\n+$/\n/;
($obj || $objs[0])->{$_[0] . '_comment'} = $comment;
$comment = '';
}
};
foreach (@$lines) {
$line++;
s/^\s*//; s/\s*$//;
if (/^$/) {
$comment .= "\n" if $comment;
next;
} elsif (/^#\W/) {
s/^#\s+/# /;
$comment .= "$_\n";
next;
}
if (/^Section\s+"(.*)"/i) {
die "$file:$line: missing EndSection\n" if @objs;
my $e = { name => $1, l => [], kind => 'Section' };
push @$raw_X, $e;
unshift @objs, $e; $obj = '';
$attach_comment->('pre');
} elsif (/^Subsection\s+"(.*)"/i) {
die "$file:$line: missing EndSubsection\n" if @objs && $objs[0]{kind} eq 'Subsection';
die "$file:$line: not in Section\n" if !@objs || $objs[0]{kind} ne 'Section';
my $e = { name => $1, l => [], kind => 'Subsection' };
push @{$objs[0]{l}}, $e;
unshift @objs, $e; $obj = '';
$attach_comment->('pre');
} elsif (/^EndSection/i) {
die "$file:$line: not in Section\n" if !@objs || $objs[0]{kind} ne 'Section';
$attach_comment->('post');
shift @objs; $obj = '';
} elsif (/^EndSubsection/i) {
die "$file:$line: not in Subsection\n" if !@objs || $objs[0]{kind} ne 'Subsection';
$attach_comment->('post');
my $e = shift @objs; $obj = '';
} else {
die "$file:$line: not in Section\n" if !@objs;
my $commented = s/^#//;
my $comment_on_line;
s/(\s*#.*)/$comment_on_line = $1; ''/e;
if (/^$/) {
die "$line: weird";
}
(my $name, my $Option, $_) =
/^Option\s*"(.*?)"(.*)/ ? ($1, 1, $2) : /^(\S+)(.*)/ ? ($1, 0, $2) : internal_error($_);
my ($val) = /(\S.*)/;
my %e = (Option => $Option, commented => $commented, comment_on_line => $comment_on_line, pre_comment => $comment);
$comment = '';
$obj = { name => $name, val => $val };
$e{$_} and $obj->{$_} = $e{$_} foreach keys %e;
push @{$objs[0]{l}}, $obj;
}
}
$raw_X;
}
sub raw_to_string {
my ($e, $want_spacing) = @_;
my $s = do {
if ($e->{l}) {
my $inside = join('', map_index { raw_to_string($_, $::i) } @{$e->{l}});
$inside =~ s/^/ /mg;
qq(\n$e->{kind} "$e->{name}"\n) . $inside . "End$e->{kind}";
} else {
($e->{commented} ? '#' : '') .
($e->{Option} ? qq(Option "$e->{name}") : $e->{name}) .
(defined $e->{val} ? ($e->{Option} && $e->{val} !~ /^"/ ? qq( "$e->{val}") : qq( $e->{val})) : '');
}
};
($e->{pre_comment} ? ($want_spacing ? "\n" : '') . $e->{pre_comment} : '') . $s . ($e->{comment_on_line} || '') . "\n" . ($e->{post_comment} || '');
}
#-###############################################################################
#- refine the data structure for easier use
#-###############################################################################
my %kind_names = (
Pointer => [ qw(Protocol Device Emulate3Buttons Emulate3Timeout) ],
Mouse => [ qw(DeviceName Protocol Device AlwaysCore Emulate3Buttons Emulate3Timeout) ], # Subsection in XInput
Keyboard => [ qw(Protocol Driver XkbModel XkbLayout XkbDisable) ],
Monitor => [ qw(Identifier VendorName ModelName HorizSync VertRefresh) ],
Device => [ qw(Identifier VendorName BoardName Chipset Driver VideoRam Screen BusID DPMS power_saver) ],
Display => [ qw(Depth Modes) ], # Subsection in Device
Screen => [ qw(Identifier Driver Device Monitor DefaultColorDepth) ],
InputDevice => [ qw(Identifier Driver Protocol Device Type Mode XkbModel XkbLayout XkbDisable Emulate3Buttons Emulate3Timeout) ],
ServerLayout => [ qw(Identifier) ],
);
my @want_string = qw(Identifier DeviceName VendorName ModelName BoardName Driver Device Chipset Monitor Protocol XkbModel XkbLayout Load);
%kind_names = map_each { lc $::a => [ map { lc } @$::b ] } %kind_names;
@want_string = map { lc } @want_string;
sub from_raw {
foreach my $e (@_) {
($e->{l}, my $l) = ({}, $e->{l});
from_raw__rec($e, $_) foreach @$l;
delete $e->{kind};
}
sub from_raw__rec {
my ($current, $e) = @_;
if ($e->{l}) {
from_raw($e);
push @{$current->{l}{$e->{name}}}, $e;
} else {
if (member(lc $e->{name}, @want_string)) {
$e->{val} =~ s/^"(.*)"$/$1/ or warn "$e->{name} $e->{val} has no quote\n";
}
if (member(lc $e->{name}, @{$kind_names{lc $current->{name}} || []})) {
if ($current->{l}{$e->{name}} && !$current->{l}{$e->{name}}{commented}) {
warn "skipping conflicting line for $e->{name} in $current->{name}\n" if !$e->{commented};
} else {
$current->{l}{$e->{name}} = $e;
}
} else {
push @{$current->{l}{$e->{name}}}, $e;
}
}
delete $e->{name};
}
}
sub before_to_string {
my ($e, $depth) = @_;
if ($e->{l}) {
$e->{kind} = $depth ? 'Subsection' : 'Section';
my %rated = map_index { $_ => $::i + 1 } @{$kind_names{lc $e->{name}} || []};
my @sorted = sort { ($rated{lc $a} || 99) <=> ($rated{lc $b} || 99) } keys %{$e->{l}};
$e->{l} = [ map {
my $name = $_;
map {
before_to_string({ name => $name, %$_ }, $depth+1);
} deref_array($e->{l}{$name});
} @sorted ];
} elsif (member(lc $e->{name}, @want_string)) {
$e->{val} = qq("$e->{val}");
}
$e;
}
|
