-#
-# Perldoc revision #1 -- look up a piece of documentation in .pod format that
-# is embedded in the perl installation tree.
-#
-# This is not to be confused with Tom Christianson's perlman, which is a
-# man replacement, written in perl. This perldoc is strictly for reading
-# the perl manuals, though it too is written in perl.
-
-if(@ARGV<1) {
- die <<EOF;
-Usage: $0 [-h] [-v] [-t] [-u] [-m] PageName|ModuleName|ProgramName
-
-We suggest you use "perldoc perldoc" to get aquainted
-with the system.
-EOF
-}
-
-use Getopt::Std;
-$Is_VMS = $^O eq 'VMS';
-
-sub usage{
- warn "@_\n" if @_;
- die <<EOF;
-perldoc [-h] [-v] [-u] PageName|ModuleName|ProgramName...
- -h Display this help message.
- -t Display pod using pod2text instead of pod2man and nroff.
- -u Display unformatted pod text
- -m Display modules file in its entirety
- -v Verbosely describe what's going on.
-PageName|ModuleName...
- is the name of a piece of documentation that you want to look at. You
- may either give a descriptive name of the page (as in the case of
- `perlfunc') the name of a module, either like `Term::Info',
- `Term/Info', the partial name of a module, like `info', or
- `makemaker', or the name of a program, like `perldoc'.
-
-Any switches in the PERLDOC environment variable will be used before the
-command line arguments.
-
-EOF
-}
-
-use Text::ParseWords;
-
-
-unshift(@ARGV,shellwords($ENV{"PERLDOC"}));
-
-getopts("mhtuv") || usage;
-
-usage if $opt_h || $opt_h; # avoid -w warning
-
-usage("only one of -t, -u, or -m") if $opt_t + $opt_u + $opt_m > 1;
-
-if ($opt_t) { require Pod::Text; import Pod::Text; }
-
-@pages = @ARGV;
-
-sub containspod {
- my($file) = @_;
- local($_);
- open(TEST,"<$file");
- while(<TEST>) {
- if(/^=head/) {
- close(TEST);
- return 1;
- }
- }
- close(TEST);
- return 0;
-}
-
- sub minus_f_nocase {
- my($file) = @_;
- local *DIR;
- local($")="/";
- my(@p,$p,$cip);
- foreach $p (split(/\//, $file)){
- if ($Is_VMS and not scalar @p) {
- # VMS filesystems don't begin at '/'
- push(@p,$p);
- next;
- }
- if (-d ("@p/$p")){
- push @p, $p;
- } elsif (-f ("@p/$p")) {
- return "@p/$p";
- } else {
- my $found=0;
- my $lcp = lc $p;
- opendir DIR, "@p";
- while ($cip=readdir(DIR)) {
- $cip =~ s/\.dir$// if $Is_VMS;
- if (lc $cip eq $lcp){
- $found++;
- last;
- }
- }
- closedir DIR;
- return "" unless $found;
- push @p, $cip;
- return "@p" if -f "@p";
- }
- }
- return; # is not a file
- }
-
- sub searchfor {
- my($recurse,$s,@dirs) = @_;
- $s =~ s!::!/!g;
- $s = VMS::Filespec::unixify($s) if $Is_VMS;
- printf STDERR "looking for $s in @dirs\n" if $opt_v;
- my $ret;
- my $i;
- my $dir;
- for ($i=0;$i<@dirs;$i++) {
- $dir = $dirs[$i];
- ($dir = VMS::Filespec::unixpath($dir)) =~ s!/$!! if $Is_VMS;
- if (( $ret = minus_f_nocase "$dir/$s.pod")
- or ( $ret = minus_f_nocase "$dir/$s.pm" and containspod($ret))
- or ( $ret = minus_f_nocase "$dir/$s" and containspod($ret))
- or ( $Is_VMS and
- $ret = minus_f_nocase "$dir/$s.com" and containspod($ret))
- or ( $ret = minus_f_nocase "$dir/pod/$s.pod")
- or ( $ret = minus_f_nocase "$dir/pod/$s" and containspod($ret)))
- { return $ret; }
-
- if($recurse) {
- opendir(D,$dir);
- my(@newdirs) = grep(-d,map("$dir/$_",grep(!/^\.\.?$/,readdir(D))));
- closedir(D);
- @newdirs = map((s/.dir$//,$_)[1],@newdirs) if $Is_VMS;
- next unless @newdirs;
- print STDERR "Also looking in @newdirs\n" if $opt_v;
- push(@dirs,@newdirs);
- }
- }
- return ();
- }
-
-
-foreach (@pages) {
- print STDERR "Searching for $_\n" if $opt_v;
- # We must look both in @INC for library modules and in PATH
- # for executables, like h2xs or perldoc itself.
- @searchdirs = @INC;
- unless ($opt_m) {
- if ($Is_VMS) {
- my($i,$trn);
- for ($i = 0; $trn = $ENV{'DCL$PATH'.$i}; $i++) {
- push(@searchdirs,$trn);
- }
- } else {
- push(@searchdirs, grep(-d, split(':', $ENV{'PATH'})));
- }
- @files= searchfor(0,$_,@searchdirs);
- }
- if( @files ) {
- print STDERR "Found as @files\n" if $opt_v;
- } else {
- # no match, try recursive search
-
- @searchdirs = grep(!/^\.$/,@INC);
-
-
- @files= searchfor(1,$_,@searchdirs);
- if( @files ) {
- print STDERR "Loosely found as @files\n" if $opt_v;
- } else {
- print STDERR "No documentation found for '$_'\n";
- }
- }
- push(@found,@files);
-}
-
-if(!@found) {
- exit ($Is_VMS ? 98962 : 1);
-}
-
-if( ! -t STDOUT ) { $opt_f = 1 }
-
-unless($Is_VMS) {
- $tmp = "/tmp/perldoc1.$$";
- $goodresult = 0;
- @pagers = qw( more less pg view cat );
- unshift(@pagers,$ENV{PAGER}) if $ENV{PAGER};
-} else {
- require Config;
- $tmp = 'Sys$Scratch:perldoc.tmp1_'.$$;
- @pagers = ($Config::Config{'pager'},qw( most more less type/page ));
- unshift(@pagers,$ENV{PERLDOC_PAGER}) if $ENV{PERLDOC_PAGER};
- $goodresult = 1;
-}
-
-if ($opt_m) {
- foreach $pager (@pagers) {
- my($sts) = system("$pager @found");
- exit 0 if ($Is_VMS ? ($sts & 1) : !$sts);
- }
- exit $Is_VMS ? $sts : 1;
-}
-
-foreach (@found) {
-
- if($opt_t) {
- open(TMP,">>$tmp");
- Pod::Text::pod2text($_,*TMP);
- close(TMP);
- } elsif(not $opt_u) {
- open(TMP,">>$tmp");
- if($^O =~ /hpux/) {
- $rslt = `pod2man $_ | nroff -man | col -x`;
- } else {
- $rslt = `pod2man $_ | nroff -man`;
- }
- if ($Is_VMS) { $err = !($? % 2) || $rslt =~ /IVVERB/; }
- else { $err = $?; }
- print TMP $rslt unless $err;
- close TMP;
- }
-
- if( $opt_u or $err or -z $tmp) {
- open(OUT,">>$tmp");
- open(IN,"<$_");
- $cut = 1;
- while (<IN>) {
- $cut = $1 eq 'cut' if /^=(\w+)/;
- next if $cut;
- print OUT;
- }
- close(IN);
- close(OUT);
- }
-}
-
-if( $opt_f ) {
- open(TMP,"<$tmp");
- print while <TMP>;
- close(TMP);
-} else {
- foreach $pager (@pagers) {
- $sts = system("$pager $tmp");
- last if $Is_VMS && ($sts & 1);
- last unless $sts;
- }
-}
-
-1 while unlink($tmp); #Possibly pointless VMSism