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126 lines
3.2 KiB
126 lines
3.2 KiB
package VerboseWarnings;
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use Modern::Perl;
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require Exporter;
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use vars qw(@ISA @EXPORT @EXPORT_OK %EXPORT_TAGS);
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###############################################################################
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=head1 NAME
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VerboseWarnings.pm - Verbose warnings for Perl scripts
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=head1 DESCRIPTION
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Contains convenience functions to construct Unix-style informational,
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verbose warnings.
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=cut
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###############################################################################
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@ISA = qw(Exporter);
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@EXPORT_OK = qw(
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&pedantic_p
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&warn_additional
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&warn_normal
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&warn_pedantic
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&error_additional
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&error_normal
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);
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%EXPORT_TAGS = (
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'warn' => [ 'warn_additional', 'warn_normal', 'warn_pedantic' ],
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'die' => [ 'error_additional', 'error_normal' ],
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);
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###############################################################################
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use vars qw( $appName $input $input_abbr $pedantic_p $pedantic_tag $quiet);
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use vars qw( $warned $erred );
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sub set_application_name ($) {
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my($s) = @_;
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$appName = $& if !defined $appName && $s =~ /[^\/]+$/;
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}
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sub application_name () {
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return $appName;
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}
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sub set_input_file_name ($) {
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my($s) = @_;
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$input = $s;
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$input_abbr = $& if defined $s && $s =~ /[^\/]+$/;
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}
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sub set_pedantic_mode ($) {
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my($p) = @_;
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$pedantic_p = $p;
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$pedantic_tag = $pedantic_p? '': ' (negligible)';
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}
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sub pedantic_p () {
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return $pedantic_p;
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}
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sub construct_warn_prefix ($$) {
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my($prefix, $lc) = @_;
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die "construct_warn_prefix called before set_application_name"
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unless defined $appName;
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die "construct_warn_prefix called before set_input_file_name"
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unless defined $input || !defined $lc; # be a bit lenient
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die "construct_warn_prefix called before set_pedantic_mode"
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unless defined $pedantic_tag;
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# FIXME: The line number is not accurate, but should be "close enough"
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# FIXME: This wording is worse than what was there, but it's wrong to
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# FIXME: hard-code this thing in each warn statement. Need improvement.
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return "$appName: $prefix: " . (defined $lc? "$input_abbr: line $lc: ": defined $input_abbr? "$input_abbr: ": '');
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}
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sub warn_additional ($$) {
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my($msg, $lc) = @_;
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my $prefix = construct_warn_prefix('Warning', $lc);
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$msg .= "\n" unless $msg =~ /\n$/s;
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warn "$prefix$msg";
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}
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sub warn_normal ($$) {
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my($msg, $lc) = @_;
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$warned += 1;
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warn_additional($msg, $lc);
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}
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sub warn_pedantic ($$$) {
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my($msg, $lc, $flag) = @_;
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my $prefix = construct_warn_prefix("Warning$pedantic_tag", $lc);
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$msg .= "\n" unless $msg =~ /\n$/s;
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warn "$prefix$msg" if ($pedantic_p || !$$flag) && $quiet;
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if (!$pedantic_p) {
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$prefix = construct_warn_prefix("Warning$pedantic_tag", undef);
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warn $prefix."Further similar negligible warnings will not be reported, use --pedantic for details\n" unless ($$flag || !$quiet);
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$$flag = 1;
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}
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$warned += 1;
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}
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sub error_additional ($$) {
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my($msg, $lc) = @_;
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my $prefix = construct_warn_prefix('ERROR', $lc);
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$msg .= "\n" unless $msg =~ /\n$/s;
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warn "$prefix$msg";
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}
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sub error_normal ($$) {
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my($msg, $lc) = @_;
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$erred += 1;
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error_additional($msg, $lc);
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}
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sub warned () {
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return $warned; # number of times warned
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}
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###############################################################################
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