Clarify perlrebackslash.pod

[perl5.git] / pod / podchecker.PL

diff --git a/pod/podchecker.PL b/pod/podchecker.PL
index 0d31763..75c316d 100644 (file)
--- a/pod/podchecker.PL
+++ b/pod/podchecker.PL
@@ -18,6 +18,7 @@ chdir(dirname($0));
 ($file = basename($0)) =~ s/\.PL$//;
 $file =~ s/\.pl$//
         if ($^O eq 'VMS' or $^O eq 'os2' or $^O eq 'dos');  # "case-forgiving"
+$file .= '.com' if $^O eq 'VMS';
 
 open OUT,">$file" or die "Can't create $file: $!";
 
@@ -38,17 +39,14 @@ print OUT <<'!NO!SUBS!';
 #############################################################################
 # podchecker -- command to invoke the podchecker function in Pod::Checker
 #
-# Derived from Tom Christiansen's pod2text script.
-# (with extensive modifications)
-#
-# Copyright (c) 1998 Bradford Appleton. All rights reserved.
+# Copyright (c) 1998-2000 by Bradford Appleton. All rights reserved.
 # This file is part of "PodParser". PodParser is free software;
 # you can redistribute it and/or modify it under the same terms
 # as Perl itself.
 #############################################################################
 
 use strict;
-use diagnostics;
+#use diagnostics;
 
 =head1 NAME
 
@@ -56,7 +54,7 @@ podchecker - check the syntax of POD format documentation files
 
 =head1 SYNOPSIS
 
-B<podchecker> [B<-help>] [B<-man>] [I<file>S< >...]
+B<podchecker> [B<-help>] [B<-man>] [B<-(no)warnings>] [I<file>S< >...]
 
 =head1 OPTIONS AND ARGUMENTS
 
@@ -70,6 +68,12 @@ Print a brief help message and exit.
 
 Print the manual page and exit.
 
+=item B<-warnings> B<-nowarnings>
+
+Turn on/off printing of warnings. Repeating B<-warnings> increases the
+warning level, i.e. more warnings are printed. Currently increasing to
+level two causes flagging of unescaped "E<lt>,E<gt>" characters.
+
 =item I<file>
 
 The pathname of a POD file to syntax-check (defaults to standard input).
@@ -83,16 +87,37 @@ syntax errors in the POD documentation and will print any errors
 it find to STDERR. At the end, it will print a status message
 indicating the number of errors found.
 
+Directories are ignored, an appropriate warning message is printed.
+
 B<podchecker> invokes the B<podchecker()> function exported by B<Pod::Checker>
 Please see L<Pod::Checker/podchecker()> for more details.
 
+=head1 RETURN VALUE
+
+B<podchecker> returns a 0 (zero) exit status if all specified
+POD files are ok.
+
+=head1 ERRORS
+
+B<podchecker> returns the exit status 1 if at least one of
+the given POD files has syntax errors.
+
+The status 2 indicates that at least one of the specified 
+files does not contain I<any> POD commands.
+
+Status 1 overrides status 2. If you want unambiguous
+results, call B<podchecker> with one single argument only.
+
 =head1 SEE ALSO
 
 L<Pod::Parser> and L<Pod::Checker>
 
-=head1 AUTHOR
+=head1 AUTHORS
+
+Please report bugs using L<http://rt.cpan.org>.
 
-Brad Appleton E<lt>bradapp@enteract.comE<gt>
+Brad Appleton E<lt>bradapp@enteract.comE<gt>,
+Marek Rouchal E<lt>marekr@cpan.orgE<gt>
 
 Based on code for B<Pod::Text::pod2text(1)> written by
 Tom Christiansen E<lt>tchrist@mox.perl.comE<gt>
@@ -105,25 +130,53 @@ use Pod::Usage;
 use Getopt::Long;
 
 ## Define options
-my %options = (
-        "help"     => 0,
-        "man"      => 0,
-);
+my %options;
 
 ## Parse options
-GetOptions(\%options, "help", "man")  ||  pod2usage(2);
+GetOptions(\%options, qw(help man warnings+ nowarnings))  ||  pod2usage(2);
 pod2usage(1)  if ($options{help});
 pod2usage(-verbose => 2)  if ($options{man});
 
+if($options{nowarnings}) {
+  $options{warnings} = 0;
+}
+elsif(!defined $options{warnings}) {
+  $options{warnings} = 1; # default is warnings on
+}
+
 ## Dont default to STDIN if connected to a terminal
 pod2usage(2) if ((@ARGV == 0) && (-t STDIN));
 
 ## Invoke podchecker()
-if(@ARGV) {
-   for (@ARGV) { podchecker($_) };
-} else {
-       podchecker("<&STDIN");
+my $status = 0;
+@ARGV = qw(-) unless(@ARGV);
+for my $podfile (@ARGV) {
+    if($podfile eq '-') {
+      $podfile = '<&STDIN';
+    }
+    elsif(-d $podfile) {
+      warn "podchecker: Warning: Ignoring directory '$podfile'\n";
+      next;
+    }
+    my $errors =
+      podchecker($podfile, undef, '-warnings' => $options{warnings});
+    if($errors > 0) {
+        # errors occurred
+        $status = 1;
+        printf STDERR ("%s has %d pod syntax %s.\n",
+          $podfile, $errors,
+          ($errors == 1) ? 'error' : 'errors');
+    }
+    elsif($errors < 0) {
+        # no pod found
+        $status = 2 unless($status);
+        print STDERR "$podfile does not contain any pod commands.\n";
+    }
+    else {
+        print STDERR "$podfile pod syntax OK.\n";
+    }
 }
+exit $status;
 
 !NO!SUBS!