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package LXDebug;
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use constant NONE => 0;
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use constant INFO => 1;
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use constant DEBUG1 => 2;
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use constant DEBUG2 => 4;
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use constant QUERY => 8;
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use constant TRACE => 16;
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use constant ALL => 31;
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use constant FILE_TARGET => 0;
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use constant STDERR_TARGET => 1;
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use POSIX qw(strftime);
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my $data_dumper_available;
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BEGIN {
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eval("use Data::Dumper");
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$data_dumper_available = $@ ? 0 : 1;
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$global_level = NONE;
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}
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sub new {
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my $type = shift;
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my $self = {};
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$self->{"calldepth"} = 0;
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$self->{"file"} = "/tmp/lx-office-debug.log";
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$self->{"target"} = FILE_TARGET;
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$self->{"level"} = 0;
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$self->{"watchedvars"} = {};
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while ($_[0]) {
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$self->{ $_[0] } = $_[1];
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shift;
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shift;
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}
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bless($self, $type);
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}
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sub set_target {
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my ($self, $target, $file) = @_;
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if ((FILE_TARGET == $target) && $file) {
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$self->{"file"} = $file;
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$self->{"target"} = FILE_TARGET;
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} elsif (STDERR_TARGET == $target) {
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$self->{"target"} = STDERR_TARGET;
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}
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}
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sub enter_sub {
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my ($self, $level) = @_;
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$level *= 1;
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$self->check_watched_form_variables();
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return 1 unless ($global_level & TRACE); # ignore if traces aren't active
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return 1 if $level && !($global_level & $level); # ignore if level of trace isn't active
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my ($package, $filename, $line, $subroutine) = caller(1);
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my ($dummy1, $self_filename, $self_line) = caller(0);
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my $indent = " " x $self->{"calldepth"}++;
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if (!defined($package)) {
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$self->_write('sub' . $level, $indent . "\\ top-level?\n");
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} else {
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$self->_write('sub' . $level, $indent
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. "\\ ${subroutine} in "
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. "${self_filename}:${self_line} called from "
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. "${filename}:${line}\n");
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}
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return 1;
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}
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sub leave_sub {
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my ($self, $level) = @_;
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$level *= 1;
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$self->check_watched_form_variables();
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return 1 unless ($global_level & TRACE); # ignore if traces aren't active
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return 1 if $level && !($global_level & $level); # ignore if level of trace isn't active
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my ($package, $filename, $line, $subroutine) = caller(1);
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my ($dummy1, $self_filename, $self_line) = caller(0);
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my $indent = " " x --$self->{"calldepth"};
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if (!defined($package)) {
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$self->_write('sub' . $level, $indent . "/ top-level?\n");
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} else {
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$self->_write('sub' . $level, $indent . "/ ${subroutine} in " . "${self_filename}:${self_line}\n");
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}
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return 1;
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}
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sub message {
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my ($self, $level, $message) = @_;
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$self->check_watched_form_variables();
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$self->_write(level2string($level), $message) if (($self->{"level"} | $global_level) & $level || !$level);
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}
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sub dump {
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my ($self, $level, $name, $variable) = @_;
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if ($data_dumper_available) {
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$self->message($level, "dumping ${name}:\n" . Dumper($variable));
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} else {
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$self->message($level,
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"dumping ${name}: Data::Dumper not available; "
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. "variable cannot be dumped");
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}
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}
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sub enable_sub_tracing {
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my ($self) = @_;
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$self->{level} | TRACE;
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}
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sub disable_sub_tracing {
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my ($self) = @_;
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$self->{level} & ~ TRACE;
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}
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sub _write {
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my ($self, $prefix, $message) = @_;
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my $date = strftime("%Y-%m-%d %H:%M:%S $$ ${prefix}: ", localtime(time()));
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local *FILE;
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chomp($message);
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if ((FILE_TARGET == $self->{"target"})
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&& open(FILE, ">>" . $self->{"file"})) {
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print(FILE "${date}${message}\n");
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close(FILE);
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} elsif (STDERR_TARGET == $self->{"target"}) {
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print(STDERR "${date}${message}\n");
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}
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}
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sub level2string {
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# use $_[0] as a bit mask and return levelstrings separated by /
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join '/', qw(info debug1 debug2 query trace)[ grep { (reverse split //, sprintf "%05b", $_[0])[$_] } 0..4 ]
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}
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sub watch_form_variable {
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my ($self, $var) = @_;
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$self->{"watchedvars"}->{$var} = $main::form->{$var};
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$self->_write("WATCH", "Adding \$form->{$var} with current value \"$main::form->{$var}\"");
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}
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sub check_watched_form_variables {
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my ($self) = @_;
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return unless $main::form;
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foreach my $var (sort(keys(%{ $self->{"watchedvars"} }))) {
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if ($main::form->{$var} ne $self->{"watchedvars"}->{$var}) {
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$self->_write("WATCH", "Variable \$form->{$var} changed from \"" .
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$self->{"watchedvars"}->{$var} . "\" to \"" .
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$main::form->{$var} . "\"");
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$self->{"watchedvars"}->{$var} = $main::form->{$var};
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}
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}
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}
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1;
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