From: Gurusamy Sarathy Date: Sat, 2 Oct 1999 06:39:14 +0000 (+0000) Subject: update pod2man, pod2text and related Pod:: modules with the X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=9741dab02becad0550bba7d5ca9e59f8ac608b2d;p=p5sagit%2Fp5-mst-13.2.git update pod2man, pod2text and related Pod:: modules with the ones in podlators-0.07 from Russ Allbery p4raw-id: //depot/perl@4282 --- diff --git a/lib/Pod/Man.pm b/lib/Pod/Man.pm new file mode 100644 index 0000000..7a1c69f --- /dev/null +++ b/lib/Pod/Man.pm @@ -0,0 +1,1185 @@ +# Pod::Man -- Convert POD data to formatted *roff input. +# $Id: Man.pm,v 0.5 1999/09/25 19:49:49 eagle Exp $ +# +# Copyright 1999 by Russ Allbery +# +# This program is free software; you can redistribute it and/or modify it +# under the same terms as Perl itself. +# +# This module is intended to be a replacement for pod2man, and attempts to +# match its output except for some specific circumstances where other +# decisions seemed to produce better output. It uses Pod::Parser and is +# designed to be very easy to subclass. + +############################################################################ +# Modules and declarations +############################################################################ + +package Pod::Man; + +require 5.004; + +use Carp qw(carp croak); +use Pod::Parser (); + +use strict; +use subs qw(makespace); +use vars qw(@ISA %ESCAPES $PREAMBLE $VERSION); + +@ISA = qw(Pod::Parser); + +($VERSION = (split (' ', q$Revision: 0.5 $ ))[1]) =~ s/\.(\d)$/.0$1/; + + +############################################################################ +# Preamble and *roff output tables +############################################################################ + +# The following is the static preamble which starts all *roff output we +# generate. It's completely static except for the font to use as a +# fixed-width font, which is designed by @CFONT@. $PREAMBLE should +# therefore be run through s/\@CFONT\@//g before output. +$PREAMBLE = <<'----END OF PREAMBLE----'; +.de Sh \" Subsection heading +.br +.if t .Sp +.ne 5 +.PP +\fB\\$1\fR +.PP +.. +.de Sp \" Vertical space (when we can't use .PP) +.if t .sp .5v +.if n .sp +.. +.de Ip \" List item +.br +.ie \\n(.$>=3 .ne \\$3 +.el .ne 3 +.IP "\\$1" \\$2 +.. +.de Vb \" Begin verbatim text +.ft @CFONT@ +.nf +.ne \\$1 +.. +.de Ve \" End verbatim text +.ft R + +.fi +.. +.\" Set up some character translations and predefined strings. \*(-- will +.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left +.\" double quote, and \*(R" will give a right double quote. | will give a +.\" real vertical bar. \*(C+ will give a nicer C++. Capital omega is used +.\" to do unbreakable dashes and therefore won't be available. \*(C` and +.\" \*(C' expand to `' in nroff, nothing in troff, for use with C<> +.tr \(*W-|\(bv\*(Tr +.ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p' +.ie n \{\ +. ds -- \(*W- +. ds PI pi +. if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch +. if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch +. ds L" "" +. ds R" "" +. ds C` ` +. ds C' ' +'br\} +.el\{\ +. ds -- \|\(em\| +. ds PI \(*p +. ds L" `` +. ds R" '' +'br\} +.\" +.\" If the F register is turned on, we'll generate index entries on stderr +.\" for titles (.TH), headers (.SH), subsections (.Sh), items (.Ip), and +.\" index entries marked with X<> in POD. Of course, you'll have to process +.\" the output yourself in some meaningful fashion. +.if \nF \{\ +. de IX +. tm Index:\\$1\t\\n%\t"\\$2" +. . +. nr % 0 +. rr F +.\} +.\" +.\" For nroff, turn off justification. Always turn off hyphenation; it +.\" makes way too many mistakes in technical documents. +.hy 0 +.if n .na +.\" +.\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2). +.\" Fear. Run. Save yourself. No user-serviceable parts. +.bd B 3 +. \" fudge factors for nroff and troff +.if n \{\ +. ds #H 0 +. ds #V .8m +. ds #F .3m +. ds #[ \f1 +. ds #] \fP +.\} +.if t \{\ +. ds #H ((1u-(\\\\n(.fu%2u))*.13m) +. ds #V .6m +. ds #F 0 +. ds #[ \& +. ds #] \& +.\} +. \" simple accents for nroff and troff +.if n \{\ +. ds ' \& +. ds ` \& +. ds ^ \& +. ds , \& +. ds ~ ~ +. ds / +.\} +.if t \{\ +. ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u" +. ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u' +. ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u' +. ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u' +. ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u' +. ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u' +.\} +. \" troff and (daisy-wheel) nroff accents +.ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V' +.ds 8 \h'\*(#H'\(*b\h'-\*(#H' +.ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#] +.ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H' +.ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u' +.ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#] +.ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#] +.ds ae a\h'-(\w'a'u*4/10)'e +.ds Ae A\h'-(\w'A'u*4/10)'E +. \" corrections for vroff +.if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u' +.if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u' +. \" for low resolution devices (crt and lpr) +.if \n(.H>23 .if \n(.V>19 \ +\{\ +. ds : e +. ds 8 ss +. ds o a +. ds d- d\h'-1'\(ga +. ds D- D\h'-1'\(hy +. ds th \o'bp' +. ds Th \o'LP' +. ds ae ae +. ds Ae AE +.\} +.rm #[ #] #H #V #F C +----END OF PREAMBLE---- + +# This table is taken nearly verbatim from Tom Christiansen's pod2man. It +# assumes that the standard preamble has already been printed, since that's +# what defines all of the accent marks. Note that some of these are quoted +# with double quotes since they contain embedded single quotes, so use \\ +# uniformly for backslash for readability. +%ESCAPES = ( + 'amp' => '&', # ampersand + 'lt' => '<', # left chevron, less-than + 'gt' => '>', # right chevron, greater-than + 'quot' => '"', # double quote + + 'Aacute' => "A\\*'", # capital A, acute accent + 'aacute' => "a\\*'", # small a, acute accent + 'Acirc' => 'A\\*^', # capital A, circumflex accent + 'acirc' => 'a\\*^', # small a, circumflex accent + 'AElig' => '\*(AE', # capital AE diphthong (ligature) + 'aelig' => '\*(ae', # small ae diphthong (ligature) + 'Agrave' => "A\\*`", # capital A, grave accent + 'agrave' => "A\\*`", # small a, grave accent + 'Aring' => 'A\\*o', # capital A, ring + 'aring' => 'a\\*o', # small a, ring + 'Atilde' => 'A\\*~', # capital A, tilde + 'atilde' => 'a\\*~', # small a, tilde + 'Auml' => 'A\\*:', # capital A, dieresis or umlaut mark + 'auml' => 'a\\*:', # small a, dieresis or umlaut mark + 'Ccedil' => 'C\\*,', # capital C, cedilla + 'ccedil' => 'c\\*,', # small c, cedilla + 'Eacute' => "E\\*'", # capital E, acute accent + 'eacute' => "e\\*'", # small e, acute accent + 'Ecirc' => 'E\\*^', # capital E, circumflex accent + 'ecirc' => 'e\\*^', # small e, circumflex accent + 'Egrave' => 'E\\*`', # capital E, grave accent + 'egrave' => 'e\\*`', # small e, grave accent + 'ETH' => '\\*(D-', # capital Eth, Icelandic + 'eth' => '\\*(d-', # small eth, Icelandic + 'Euml' => 'E\\*:', # capital E, dieresis or umlaut mark + 'euml' => 'e\\*:', # small e, dieresis or umlaut mark + 'Iacute' => "I\\*'", # capital I, acute accent + 'iacute' => "i\\*'", # small i, acute accent + 'Icirc' => 'I\\*^', # capital I, circumflex accent + 'icirc' => 'i\\*^', # small i, circumflex accent + 'Igrave' => 'I\\*`', # capital I, grave accent + 'igrave' => 'i\\*`', # small i, grave accent + 'Iuml' => 'I\\*:', # capital I, dieresis or umlaut mark + 'iuml' => 'i\\*:', # small i, dieresis or umlaut mark + 'Ntilde' => 'N\*~', # capital N, tilde + 'ntilde' => 'n\*~', # small n, tilde + 'Oacute' => "O\\*'", # capital O, acute accent + 'oacute' => "o\\*'", # small o, acute accent + 'Ocirc' => 'O\\*^', # capital O, circumflex accent + 'ocirc' => 'o\\*^', # small o, circumflex accent + 'Ograve' => 'O\\*`', # capital O, grave accent + 'ograve' => 'o\\*`', # small o, grave accent + 'Oslash' => 'O\\*/', # capital O, slash + 'oslash' => 'o\\*/', # small o, slash + 'Otilde' => 'O\\*~', # capital O, tilde + 'otilde' => 'o\\*~', # small o, tilde + 'Ouml' => 'O\\*:', # capital O, dieresis or umlaut mark + 'ouml' => 'o\\*:', # small o, dieresis or umlaut mark + 'szlig' => '\*8', # small sharp s, German (sz ligature) + 'THORN' => '\\*(Th', # capital THORN, Icelandic + 'thorn' => '\\*(th', # small thorn, Icelandic + 'Uacute' => "U\\*'", # capital U, acute accent + 'uacute' => "u\\*'", # small u, acute accent + 'Ucirc' => 'U\\*^', # capital U, circumflex accent + 'ucirc' => 'u\\*^', # small u, circumflex accent + 'Ugrave' => 'U\\*`', # capital U, grave accent + 'ugrave' => 'u\\*`', # small u, grave accent + 'Uuml' => 'U\\*:', # capital U, dieresis or umlaut mark + 'uuml' => 'u\\*:', # small u, dieresis or umlaut mark + 'Yacute' => "Y\\*'", # capital Y, acute accent + 'yacute' => "y\\*'", # small y, acute accent + 'yuml' => 'y\\*:', # small y, dieresis or umlaut mark +); + + +############################################################################ +# Static helper functions +############################################################################ + +# Protect leading quotes and periods against interpretation as commands. +sub protect { local $_ = shift; s/^([.\'])/\\&$1/mg; $_ } + +# Given a command and a single argument that may or may not contain double +# quotes, handle double-quote formatting for it. If there are no double +# quotes, just return the command followed by the argument in double quotes. +# If there are double quotes, use an if statement to test for nroff, and for +# nroff output the command followed by the argument in double quotes with +# embedded double quotes doubled. For other formatters, remap paired double +# quotes to `` and ''. +sub switchquotes { + my $command = shift; + local $_ = shift; + my $extra = shift; + s/\\\*\([LR]\"/\"/g; + if (/\"/) { + s/\"/\"\"/g; + my $troff = $_; + $troff =~ s/\"\"([^\"]*)\"\"/\`\`$1\'\'/g; + s/\"/\"\"/g if $extra; + $troff =~ s/\"/\"\"/g if $extra; + $_ = qq("$_") . ($extra ? " $extra" : ''); + $troff = qq("$troff") . ($extra ? " $extra" : ''); + return ".if n $command $_\n.el $command $troff\n"; + } else { + $_ = qq("$_") . ($extra ? " $extra" : ''); + return "$command $_\n"; + } +} + +# Translate a font string into an escape. +sub toescape { (length ($_[0]) > 1 ? '\f(' : '\f') . $_[0] } + + +############################################################################ +# Initialization +############################################################################ + +# Initialize the object. Here, we also process any additional options +# passed to the constructor or set up defaults if none were given. center +# is the centered title, release is the version number, and date is the date +# for the documentation. Note that we can't know what file name we're +# processing due to the architecture of Pod::Parser, so that *has* to either +# be passed to the constructor or set separately with Pod::Man::name(). +sub initialize { + my $self = shift; + + # Figure out the fixed-width font. If user-supplied, make sure that + # they are the right length. + for (qw/fixed fixedbold fixeditalic fixedbolditalic/) { + if (defined $$self{$_}) { + if (length ($$self{$_}) < 1 || length ($$self{$_}) > 2) { + croak "roff font should be 1 or 2 chars, not `$$self{$_}'"; + } + } else { + $$self{$_} = ''; + } + } + + # Set the default fonts. We can't be sure what fixed bold-italic is + # going to be called, so default to just bold. + $$self{fixed} ||= 'CW'; + $$self{fixedbold} ||= 'CB'; + $$self{fixeditalic} ||= 'CI'; + $$self{fixedbolditalic} ||= 'CB'; + + # Set up a table of font escapes. First number is fixed-width, second + # is bold, third is italic. + $$self{FONTS} = { '000' => '\fR', '001' => '\fI', + '010' => '\fB', '011' => '\f(BI', + '100' => toescape ($$self{fixed}), + '101' => toescape ($$self{fixeditalic}), + '110' => toescape ($$self{fixedbold}), + '111' => toescape ($$self{fixedbolditalic})}; + + # Extra stuff for page titles. + $$self{center} = 'User Contributed Perl Documentation' + unless defined $$self{center}; + $$self{indent} = 4 unless defined $$self{indent}; + + # We used to try first to get the version number from a local binary, + # but we shouldn't need that any more. Get the version from the running + # Perl. + if (!defined $$self{release}) { + my ($version, $patch) = ($] =~ /^(.{5})(\d{2})?/); + $$self{release} = "perl $version"; + $$self{release} .= ", patch $patch" if $patch; + } + + # Double quotes in things that will be quoted. + for (qw/center date release/) { $$self{$_} =~ s/\"/\"\"/g } + + $$self{INDENT} = 0; # Current indentation level. + $$self{INDENTS} = []; # Stack of indentations. + $$self{INDEX} = []; # Index keys waiting to be printed. + + $self->SUPER::initialize; +} + +# For each document we process, output the preamble first. Note that the +# fixed width font is a global default; once we interpolate it into the +# PREAMBLE, it ain't ever changing. Maybe fix this later. +sub begin_pod { + my $self = shift; + + # Try to figure out the name and section from the file name. + my $section = $$self{section} || 1; + my $name = $$self{name}; + if (!defined $name) { + $name = $self->input_file; + $section = 3 if (!$$self{section} && $name =~ /\.pm$/i); + $name =~ s/\.p(od|[lm])$//i; + if ($section =~ /^1/) { + require File::Basename; + $name = uc File::Basename::basename ($name); + } else { + # Lose everything up to the first of + # */lib/*perl* standard or site_perl module + # */*perl*/lib from -D prefix=/opt/perl + # */*perl*/ random module hierarchy + # which works. Should be fixed to use File::Spec. + for ($name) { + s%//+%/%g; + if ( s%^.*?/lib/[^/]*perl[^/]*/%%i + or s%^.*?/[^/]*perl[^/]*/(?:lib/)?%%i) { + s%^site(_perl)?/%%; # site and site_perl + s%^(.*-$^O|$^O-.*)/%%o; # arch + s%^\d+\.\d+%%; # version + } + s%/%::%g; + } + } + } + + # Modification date header. Try to use the modification time of our + # input. + if (!defined $$self{date}) { + my $time = (stat $self->input_file)[9] || time; + my ($day, $month, $year) = (localtime $time)[3,4,5]; + $month++; + $year += 1900; + $$self{date} = join ('-', $year, $month, $day); + } + + # Now, print out the preamble and the title. + $PREAMBLE =~ s/\@CFONT\@/$$self{fixed}/; + chomp $PREAMBLE; + print { $self->output_handle } <<"----END OF HEADER----"; +.\\" Automatically generated by Pod::Man version $VERSION +.\\" @{[ scalar localtime ]} +.\\" +.\\" Standard preamble: +.\\" ====================================================================== +$PREAMBLE +.\\" ====================================================================== +.\\" +.IX Title "$name $section" +.TH $name $section "$$self{release}" "$$self{date}" "$$self{center}" +.UC +----END OF HEADER---- +#"# for cperl-mode + + # Initialize a few per-file variables. + $$self{INDENT} = 0; + $$self{NEEDSPACE} = 0; +} + + +############################################################################ +# Core overrides +############################################################################ + +# Called for each command paragraph. Gets the command, the associated +# paragraph, the line number, and a Pod::Paragraph object. Just dispatches +# the command to a method named the same as the command. =cut is handled +# internally by Pod::Parser. +sub command { + my $self = shift; + my $command = shift; + return if $command eq 'pod'; + return if ($$self{EXCLUDE} && $command ne 'end'); + $command = 'cmd_' . $command; + $self->$command (@_); +} + +# Called for a verbatim paragraph. Gets the paragraph, the line number, and +# a Pod::Paragraph object. Rofficate backslashes, untabify, put a +# zero-width character at the beginning of each line to protect against +# commands, and wrap in .Vb/.Ve. +sub verbatim { + my $self = shift; + return if $$self{EXCLUDE}; + local $_ = shift; + return if /^\s+$/; + s/\s+$/\n/; + my $lines = tr/\n/\n/; + 1 while s/^(.*?)(\t+)/$1 . ' ' x (length ($2) * 8 - length ($1) % 8)/me; + s/\\/\\e/g; + s/^(\s*\S)/'\&' . $1/gme; + $self->makespace if $$self{NEEDSPACE}; + $self->output (".Vb $lines\n$_.Ve\n"); + $$self{NEEDSPACE} = 0; +} + +# Called for a regular text block. Gets the paragraph, the line number, and +# a Pod::Paragraph object. Perform interpolation and output the results. +sub textblock { + my $self = shift; + return if $$self{EXCLUDE}; + $self->output ($_[0]), return if $$self{VERBATIM}; + + # Perform a little magic to collapse multiple L<> references. We'll + # just rewrite the whole thing into actual text at this part, bypassing + # the whole internal sequence parsing thing. + s{ + (L< # A link of the form L. + / + ( + [:\w]+ # The item has to be a simple word... + (\(\))? # ...or simple function. + ) + > + ( + ,?\s+(and\s+)? # Allow lots of them, conjuncted. + L< + / + ( [:\w]+ ( \(\) )? ) + > + )+ + ) + } { + local $_ = $1; + s{ L< / ([^>]+ ) } {$1}g; + my @items = split /(?:,?\s+(?:and\s+)?)/; + my $string = "the "; + my $i; + for ($i = 0; $i < @items; $i++) { + $string .= $items[$i]; + $string .= ", " if @items > 2 && $i != $#items; + $string .= " and " if ($i == $#items - 1); + } + $string .= " entries elsewhere in this document"; + $string; + }gex; + + # Parse the tree and output it. collapse knows about references to + # scalars as well as scalars and does the right thing with them. + local $_ = $self->parse (@_); + s/\n\s*$/\n/; + $self->makespace if $$self{NEEDSPACE}; + $self->output (protect $self->mapfonts ($_)); + $self->outindex; + $$self{NEEDSPACE} = 1; +} + +# Called for an interior sequence. Takes a Pod::InteriorSequence object and +# returns a reference to a scalar. This scalar is the final formatted text. +# It's returned as a reference so that other interior sequences above us +# know that the text has already been processed. +sub sequence { + my ($self, $seq) = @_; + my $command = $seq->cmd_name; + + # Zero-width characters. + if ($command eq 'Z') { return bless \ '\&', 'Pod::Man::String' } + + # C<>, L<>, X<>, and E<> don't apply guesswork to their contents. + local $_ = $self->collapse ($seq->parse_tree, $command =~ /^[CELX]$/); + + # Handle E<> escapes. + if ($command eq 'E') { + if (exists $ESCAPES{$_}) { + return bless \ "$ESCAPES{$_}", 'Pod::Man::String'; + } else { + carp "Unknown escape E<$1>"; + return bless \ "E<$_>", 'Pod::Man::String'; + } + } + + # For all the other sequences, empty content produces no output. + return '' if $_ eq ''; + + # Handle formatting sequences. + if ($command eq 'B') { + return bless \ ('\f(BS' . $_ . '\f(BE'), 'Pod::Man::String'; + } elsif ($command eq 'F') { + return bless \ ('\f(IS' . $_ . '\f(IE'), 'Pod::Man::String'; + } elsif ($command eq 'I') { + return bless \ ('\f(IS' . $_ . '\f(IE'), 'Pod::Man::String'; + } elsif ($command eq 'C') { + s/-/\\-/g; + s/__/_\\|_/g; + return bless \ ('\f(FS\*(C`' . $_ . "\\*(C'\\f(FE"), + 'Pod::Man::String'; + } + + # Handle links. + if ($command eq 'L') { + return bless \ ($self->buildlink ($_)), 'Pod::Man::String'; + } + + # Whitespace protection replaces whitespace with "\ ". + if ($command eq 'S') { + s/\s+/\\ /g; + return bless \ "$_", 'Pod::Man::String'; + } + + # Add an index entry to the list of ones waiting to be output. + if ($command eq 'X') { push (@{ $$self{INDEX} }, $_); return '' } + + # Anything else is unknown. + carp "Unknown sequence $command<$_>"; +} + + +############################################################################ +# Command paragraphs +############################################################################ + +# All command paragraphs take the paragraph and the line number. + +# First level heading. We can't output .IX in the NAME section due to a bug +# in some versions of catman, so don't output a .IX for that section. .SH +# already uses small caps, so remove any E<> sequences that would cause +# them. +sub cmd_head1 { + my $self = shift; + local $_ = $self->parse (@_); + s/\s+$//; + s/\\s-?\d//g; + $self->output (switchquotes ('.SH', $self->mapfonts ($_))); + $self->outindex (($_ eq 'NAME') ? () : ('Header', $_)); + $$self{NEEDSPACE} = 0; +} + +# Second level heading. +sub cmd_head2 { + my $self = shift; + local $_ = $self->parse (@_); + s/\s+$//; + $self->output (switchquotes ('.Sh', $self->mapfonts ($_))); + $self->outindex ('Subsection', $_); + $$self{NEEDSPACE} = 0; +} + +# Start a list. For indents after the first, wrap the outside indent in .RS +# so that hanging paragraph tags will be correct. +sub cmd_over { + my $self = shift; + local $_ = shift; + unless (/^[-+]?\d+\s+$/) { $_ = $$self{indent} } + if (@{ $$self{INDENTS} } > 0) { + $self->output (".RS $$self{INDENT}\n"); + } + push (@{ $$self{INDENTS} }, $$self{INDENT}); + $$self{INDENT} = ($_ + 0); +} + +# End a list. If we've closed an embedded indent, we've mangled the hanging +# paragraph indent, so temporarily replace it with .RS and set WEIRDINDENT. +# We'll close that .RS at the next =back or =item. +sub cmd_back { + my $self = shift; + $$self{INDENT} = pop @{ $$self{INDENTS} }; + unless (defined $$self{INDENT}) { + carp "Unmatched =back"; + $$self{INDENT} = 0; + } + if ($$self{WEIRDINDENT}) { + $self->output (".RE\n"); + $$self{WEIRDINDENT} = 0; + } + if (@{ $$self{INDENTS} } > 0) { + $self->output (".RE\n"); + $self->output (".RS $$self{INDENT}\n"); + $$self{WEIRDINDENT} = 1; + } + $$self{NEEDSPACE} = 1; +} + +# An individual list item. Emit an index entry for anything that's +# interesting, but don't emit index entries for things like bullets and +# numbers. rofficate bullets too while we're at it (so for nice output, use +# * for your lists rather than o or . or - or some other thing). +sub cmd_item { + my $self = shift; + local $_ = $self->parse (@_); + s/\s+$//; + my $index; + if (/\w/ && !/^\w[.\)]\s*$/) { + $index = $_; + $index =~ s/^\s*[-*+o.]?\s*//; + } + s/^\*(\s|\Z)/\\\(bu$1/; + if ($$self{WEIRDINDENT}) { + $self->output (".RE\n"); + $$self{WEIRDINDENT} = 0; + } + $_ = $self->mapfonts ($_); + $self->output (switchquotes ('.Ip', $_, $$self{INDENT})); + $self->outindex ($index ? ('Item', $index) : ()); + $$self{NEEDSPACE} = 0; +} + +# Begin a block for a particular translator. Setting VERBATIM triggers +# special handling in textblock(). +sub cmd_begin { + my $self = shift; + local $_ = shift; + my ($kind) = /^(\S+)/ or return; + if ($kind eq 'man' || $kind eq 'roff') { + $$self{VERBATIM} = 1; + } else { + $$self{EXCLUDE} = 1; + } +} + +# End a block for a particular translator. We assume that all =begin/=end +# pairs are properly closed. +sub cmd_end { + my $self = shift; + $$self{EXCLUDE} = 0; + $$self{VERBATIM} = 0; +} + +# One paragraph for a particular translator. Ignore it unless it's intended +# for man or roff, in which case we output it verbatim. +sub cmd_for { + my $self = shift; + local $_ = shift; + my $line = shift; + return unless s/^(?:man|roff)\b[ \t]*\n?//; + $self->output ($_); +} + + +############################################################################ +# Link handling +############################################################################ + +# Handle links. We can't actually make real hyperlinks, so this is all to +# figure out what text and formatting we print out. +sub buildlink { + my $self = shift; + local $_ = shift; + + # Smash whitespace in case we were split across multiple lines. + s/\s+/ /g; + + # If we were given any explicit text, just output it. + if (m{ ^ ([^|]+) \| }x) { return $1 } + + # Okay, leading and trailing whitespace isn't important. + s/^\s+//; + s/\s+$//; + + # Default to using the whole content of the link entry as a section + # name. Note that L forces a manpage interpretation, as does + # something looking like L. Do the same thing to + # L as we would to manpage(section) without the L<>; + # see guesswork(). If we've added italics, don't add the "manpage" + # text; markup is sufficient. + my ($manpage, $section) = ('', $_); + if (/^"\s*(.*?)\s*"$/) { + $section = '"' . $1 . '"'; + } elsif (m{ ^ [-:.\w]+ (?: \( \S+ \) )? $ }x) { + ($manpage, $section) = ($_, ''); + $manpage =~ s/^([^\(]+)\(/'\f(IS' . $1 . '\f(IE\|('/e; + } elsif (m%/%) { + ($manpage, $section) = split (/\s*\/\s*/, $_, 2); + if ($manpage =~ /^[-:.\w]+(?:\(\S+\))?$/) { + $manpage =~ s/^([^\(]+)\(/'\f(IS' . $1 . '\f(IE\|'/e; + } + $section =~ s/^\"\s*//; + $section =~ s/\s*\"$//; + } + if ($manpage && $manpage !~ /\\f\(IS/) { + $manpage = "the $manpage manpage"; + } + + # Now build the actual output text. + my $text = ''; + if (!length ($section) && !length ($manpage)) { + carp "Invalid link $_"; + } elsif (!length ($section)) { + $text = $manpage; + } elsif ($section =~ /^[:\w]+(?:\(\))?/) { + $text .= 'the ' . $section . ' entry'; + $text .= (length $manpage) ? " in $manpage" + : " elsewhere in this document"; + } else { + $text .= 'the section on "' . $section . '"'; + $text .= " in $manpage" if length $manpage; + } + $text; +} + + +############################################################################ +# Escaping and fontification +############################################################################ + +# At this point, we'll have embedded font codes of the form \f([SE] +# where is one of B, I, or F. Turn those into the right font start +# or end codes. B else> should map to \fBsome\f(BIthing\fB +# else\fR. The old pod2man didn't get this right; the second \fB was \fR, +# so nested sequences didn't work right. We take care of this by using +# variables as a combined pointer to our current font sequence, and set each +# to the number of current nestings of start tags for that font. Use them +# as a vector to look up what font sequence to use. +sub mapfonts { + my $self = shift; + local $_ = shift; + + my ($fixed, $bold, $italic) = (0, 0, 0); + my %magic = (F => \$fixed, B => \$bold, I => \$italic); + s { \\f\((.)(.) } { + ${ $magic{$1} } += ($2 eq 'S') ? 1 : -1; + $$self{FONTS}{($fixed && 1) . ($bold && 1) . ($italic && 1)}; + }gxe; + $_; +} + + +############################################################################ +# *roff-specific parsing +############################################################################ + +# Called instead of parse_text, calls parse_text with the right flags. +sub parse { + my $self = shift; + $self->parse_text ({ -expand_seq => 'sequence', + -expand_ptree => 'collapse' }, @_); +} + +# Takes a parse tree and a flag saying whether or not to treat it as literal +# text (not call guesswork on it), and returns the concatenation of all of +# the text strings in that parse tree. If the literal flag isn't true, +# guesswork() will be called on all plain scalars in the parse tree. +# Assumes that everything in the parse tree is either a scalar or a +# reference to a scalar. +sub collapse { + my ($self, $ptree, $literal) = @_; + if ($literal) { + return join ('', map { + if (ref $_) { + $$_; + } else { + s/\\/\\e/g; + $_; + } + } $ptree->children); + } else { + return join ('', map { + ref ($_) ? $$_ : $self->guesswork ($_) + } $ptree->children); + } +} + +# Takes a text block to perform guesswork on; this is guaranteed not to +# contain any interior sequences. Returns the text block with remapping +# done. +sub guesswork { + my $self = shift; + local $_ = shift; + + # rofficate backslashes. + s/\\/\\e/g; + + # Ensure double underbars have a tiny space between them. + s/__/_\\|_/g; + + # Make all caps a little smaller. Be careful here, since we don't want + # to make @ARGV into small caps, nor do we want to fix the MIME in + # MIME-Version, since it looks weird with the full-height V. + s{ + ( ^ | [\s\(\"\'\`\[\{<>] ) + ( [A-Z] [A-Z] [/A-Z+:\d_\$&-]* ) + (?: (?= [\s>\}\]\)\'\".?!,;:] | -- ) | $ ) + } { $1 . '\s-1' . $2 . '\s0' . $3 }egx; + + # Turn PI into a pretty pi. + s{ (?: \\s-1 | \b ) PI (?: \\s0 | \b ) } {\\*\(PI}gx; + + # Italize functions in the form func(). + s{ + \b + ( + [:\w]+ (?:\\s-1)? \(\) + ) + } { '\f(IS' . $1 . '\f(IE' }egx; + + # func(n) is a reference to a manual page. Make it \fIfunc\fR\|(n). + s{ + \b + (\w[-:.\w]+ (?:\\s-1)?) + ( + \( [^\)] \) + ) + } { '\f(IS' . $1 . '\f(IE\|' . $2 }egx; + + # Convert simple Perl variable references to a fixed-width font. + s{ + ( \s+ ) + ( [\$\@%] [\w:]+ ) + (?! \( ) + } { $1 . '\f(FS' . $2 . '\f(FE'}egx; + + # Translate -- into a real em dash if it's used like one and fix up + # dashes, but keep hyphens hyphens. + s{ (\G|^|.) (-+) (\b|.) } { + my ($pre, $dash, $post) = ($1, $2, $3); + if (length ($dash) == 1) { + ($pre =~ /[a-zA-Z]/) ? "$pre-$post" : "$pre\\-$post"; + } elsif (length ($dash) == 2 + && ((!$pre && !$post) + || ($pre =~ /\w/ && !$post) + || ($pre eq ' ' && $post eq ' ') + || ($pre eq '=' && $post ne '=') + || ($pre ne '=' && $post eq '='))) { + "$pre\\*(--$post"; + } else { + $pre . ('\-' x length $dash) . $post; + } + }egxs; + + # Fix up double quotes. + s{ \" ([^\"]+) \" } { '\*(L"' . $1 . '\*(R"' }egx; + + # Make C++ into \*(C+, which is a squinched version. + s{ \b C\+\+ } {\\*\(C+}gx; + + # All done. + $_; +} + + +############################################################################ +# Output formatting +############################################################################ + +# Make vertical whitespace. +sub makespace { + my $self = shift; + $self->output ($$self{INDENT} > 0 ? ".Sp\n" : ".PP\n"); +} + +# Output any pending index entries, and optionally an index entry given as +# an argument. Support multiple index entries in X<> separated by slashes, +# and strip special escapes from index entries. +sub outindex { + my ($self, $section, $index) = @_; + my @entries = map { split m%\s*/\s*% } @{ $$self{INDEX} }; + return unless ($section || @entries); + $$self{INDEX} = []; + my $output; + if (@entries) { + my $output = '.IX Xref "' + . join (' ', map { s/\"/\"\"/; $_ } @entries) + . '"' . "\n"; + } + if ($section) { + $index =~ s/\"/\"\"/; + $index =~ s/\\-/-/g; + $index =~ s/\\(?:s-?\d|.\(..|.)//g; + $output .= ".IX $section " . '"' . $index . '"' . "\n"; + } + $self->output ($output); +} + +# Output text to the output device. +sub output { print { $_[0]->output_handle } $_[1] } + +__END__ + +.\" These are some extra bits of roff that I don't want to lose track of +.\" but that have been removed from the preamble to make it a bit shorter +.\" since they're not currently being used. They're accents and special +.\" characters we don't currently have escapes for. +.if n \{\ +. ds ? ? +. ds ! ! +. ds q +.\} +.if t \{\ +. ds ? \s-2c\h'-\w'c'u*7/10'\u\h'\*(#H'\zi\d\s+2\h'\w'c'u*8/10' +. ds ! \s-2\(or\s+2\h'-\w'\(or'u'\v'-.8m'.\v'.8m' +. ds q o\h'-\w'o'u*8/10'\s-4\v'.4m'\z\(*i\v'-.4m'\s+4\h'\w'o'u*8/10' +.\} +.ds v \\k:\h'-(\\n(.wu*9/10-\*(#H)'\v'-\*(#V'\*(#[\s-4v\s0\v'\*(#V'\h'|\\n:u'\*(#] +.ds _ \\k:\h'-(\\n(.wu*9/10-\*(#H+(\*(#F*2/3))'\v'-.4m'\z\(hy\v'.4m'\h'|\\n:u' +.ds . \\k:\h'-(\\n(.wu*8/10)'\v'\*(#V*4/10'\z.\v'-\*(#V*4/10'\h'|\\n:u' +.ds 3 \*(#[\v'.2m'\s-2\&3\s0\v'-.2m'\*(#] +.ds oe o\h'-(\w'o'u*4/10)'e +.ds Oe O\h'-(\w'O'u*4/10)'E +.if \n(.H>23 .if \n(.V>19 \ +\{\ +. ds v \h'-1'\o'\(aa\(ga' +. ds _ \h'-1'^ +. ds . \h'-1'. +. ds 3 3 +. ds oe oe +. ds Oe OE +.\} + +############################################################################ +# Documentation +############################################################################ + +=head1 NAME + +Pod::Man - Convert POD data to formatted *roff input + +=head1 SYNOPSIS + + use Pod::Man; + my $parser = Pod::Man->new (release => $VERSION, section => 8); + + # Read POD from STDIN and write to STDOUT. + $parser->parse_from_filehandle; + + # Read POD from file.pod and write to file.1. + $parser->parse_from_file ('file.pod', 'file.1'); + +=head1 DESCRIPTION + +Pod::Man is a module to convert documentation in the POD format (the +preferred language for documenting Perl) into *roff input using the man +macro set. The resulting *roff code is suitable for display on a terminal +using nroff(1), normally via man(1), or printing using troff(1). It is +conventionally invoked using the driver script B, but it can also +be used directly. + +As a derived class from Pod::Parser, Pod::Man supports the same methods and +interfaces. See L for all the details; briefly, one creates a +new parser with Cnew()> and then calls either +parse_from_filehandle() or parse_from_file(). + +new() can take options, in the form of key/value pairs that control the +behavior of the parser. See below for details. + +If no options are given, Pod::Man uses the name of the input file with any +trailing C<.pod>, C<.pm>, or C<.pl> stripped as the man page title, to +section 1 unless the file ended in C<.pm> in which case it defaults to +section 3, to a centered title of "User Contributed Perl Documentation", to +a centered footer of the Perl version it is run with, and to a left-hand +footer of the modification date of its input (or the current date if given +STDIN for input). + +Pod::Man assumes that your *roff formatters have a fixed-width font named +CW. If yours is called something else (like CR), use the C option to +specify it. This generally only matters for troff output for printing. +Similarly, you can set the fonts used for bold, italic, and bold italic +fixed-width output. + +Besides the obvious pod conversions, Pod::Man also takes care of formatting +func(), func(n), and simple variable references like $foo or @bar so you +don't have to use code escapes for them; complex expressions like +C<$fred{'stuff'}> will still need to be escaped, though. It also translates +dashes that aren't used as hyphens into en dashes, makes long dashes--like +this--into proper em dashes, fixes "paired quotes," makes C++ and PI look +right, puts a little space between double underbars, makes ALLCAPS a teeny +bit smaller in troff(1), and escapes stuff that *roff treats as special so +that you don't have to. + +The recognized options to new() are as follows. All options take a single +argument. + +=over 4 + +=item center + +Sets the centered page header to use instead of "User Contributed Perl +Documentation". + +=item date + +Sets the left-hand footer. By default, the modification date of the input +file will be used, or the current date if stat() can't find that file (the +case if the input is from STDIN), and the date will be formatted as +YYYY-MM-DD. + +=item fixed + +The fixed-width font to use for vertabim text and code. Defaults to CW. +Some systems may want CR instead. Only matters for troff(1) output. + +=item fixedbold + +Bold version of the fixed-width font. Defaults to CB. Only matters for +troff(1) output. + +=item fixeditalic + +Italic version of the fixed-width font (actually, something of a misnomer, +since most fixed-width fonts only have an oblique version, not an italic +version). Defaults to CI. Only matters for troff(1) output. + +=item fixedbolditalic + +Bold italic (probably actually oblique) version of the fixed-width font. +Pod::Man doesn't assume you have this, and defaults to CB. Some systems +(such as Solaris) have this font available as CX. Only matters for troff(1) +output. + +=item release + +Set the centered footer. By default, this is the version of Perl you run +Pod::Man under. Note that some system an macro sets assume that the +centered footer will be a modification date and will prepend something like +"Last modified: "; if this is the case, you may want to set C to +the last modified date and C to the version number. + +=item section + +Set the section for the C<.TH> macro. The standard section numbering +convention is to use 1 for user commands, 2 for system calls, 3 for +functions, 4 for devices, 5 for file formats, 6 for games, 7 for +miscellaneous information, and 8 for administrator commands. There is a lot +of variation here, however; some systems (like Solaris) use 4 for file +formats, 5 for miscellaneous information, and 7 for devices. Still others +use 1m instead of 8, or some mix of both. About the only section numbers +that are reliably consistent are 1, 2, and 3. + +By default, section 1 will be used unless the file ends in .pm in which case +section 3 will be selected. + +=back + +The standard Pod::Parser method parse_from_filehandle() takes up to two +arguments, the first being the file handle to read POD from and the second +being the file handle to write the formatted output to. The first defaults +to STDIN if not given, and the second defaults to STDOUT. The method +parse_from_file() is almost identical, except that its two arguments are the +input and output disk files instead. See L for the specific +details. + +=head1 DIAGNOSTICS + +=over 4 + +=item roff font should be 1 or 2 chars, not `%s' + +(F) You specified a *roff font (using C, C, etc.) that +wasn't either one or two characters. Pod::Man doesn't support *roff fonts +longer than two characters, although some *roff extensions do (the canonical +versions of nroff(1) and troff(1) don't either). + +=item Invalid link %s + +(W) The POD source contained a CE> sequence that Pod::Man was +unable to parse. You should never see this error message; it probably +indicates a bug in Pod::Man. + +=item Unknown escape EE%sE + +(W) The POD source contained an CE> escape that Pod::Man didn't +know about. C%sE> was printed verbatim in the output. + +=item Unknown sequence %s + +(W) The POD source contained a non-standard interior sequence (something of +the form CE>) that Pod::Man didn't know about. It was ignored. + +=item Unmatched =back + +(W) Pod::Man encountered a C<=back> command that didn't correspond to an +C<=over> command. + +=back + +=head1 BUGS + +The lint-like features and strict POD format checking done by B are +not yet implemented and should be, along with the corresponding C +option. + +The NAME section should be recognized specially and index entries emitted +for everything in that section. This would have to be deferred until the +next section, since extraneous things in NAME tends to confuse various man +page processors. + +The handling of hyphens, en dashes, and em dashes is somewhat fragile, and +one may get the wrong one under some circumstances. This should only matter +for troff(1) output. + +When and whether to use small caps is somewhat tricky, and Pod::Man doesn't +necessarily get it right. + +Pod::Man doesn't handle font names longer than two characters. Neither do +most troff(1) implementations, but GNU troff does as an extension. It would +be nice to support as an option for those who want to use it. + +The preamble added to each output file is rather verbose, and most of it is +only necessary in the presence of EEE escapes for non-ASCII +characters. It would ideally be nice if all of those definitions were only +output if needed, perhaps on the fly as the characters are used. + +Some of the automagic applied to file names assumes Unix directory +separators. + +Pod::Man is excessively slow. + +=head1 NOTES + +The intention is for this module and its driver script to eventually replace +B in Perl core. + +=head1 SEE ALSO + +L, perlpod(1), pod2roff(1), nroff(1), troff(1), +man(1), man(7) + +Ossanna, Joseph F., and Brian W. Kernighan. "Troff User's Manual," +Computing Science Technical Report No. 54, AT&T Bell Laboratories. This is +the best documentation of standard nroff(1) and troff(1). At the time of +this writing, it's available at http://www.cs.bell-labs.com/cm/cs/cstr.html. + +The man page documenting the man macro set may be man(5) instead of man(7) +on your system. Also, please see pod2roff(1) for extensive documentation on +writing manual pages if you've not done it before and aren't familiar with +the conventions. + +=head1 AUTHOR + +Russ Allbery Erra@stanford.eduE, based I heavily on the +original B by Tom Christiansen Etchrist@mox.perl.comE. + +=cut diff --git a/lib/Pod/Text.pm b/lib/Pod/Text.pm index 1d75aec..165dd5d 100644 --- a/lib/Pod/Text.pm +++ b/lib/Pod/Text.pm @@ -36,7 +36,7 @@ use vars qw(@ISA %ESCAPES $VERSION); # Table of supported E<> escapes ############################################################################ -# This table is taken near verbatim from Pod::Text in Pod::Parser, +# This table is taken near verbatim from Pod::PlainText in Pod::Parser, # which got it near verbatim from the original Pod::Text. It is therefore # credited to Tom Christiansen, and I'm glad I didn't have to write it. :) %ESCAPES = ( diff --git a/lib/Pod/Text/Color.pm b/lib/Pod/Text/Color.pm index 5eac57c..10e1d9f 100644 --- a/lib/Pod/Text/Color.pm +++ b/lib/Pod/Text/Color.pm @@ -1,5 +1,5 @@ # Pod::Text::Color -- Convert POD data to formatted color ASCII text -# $Id: Color.pm,v 0.1 1999/06/13 02:41:06 eagle Exp $ +# $Id: Color.pm,v 0.5 1999/09/20 10:15:16 eagle Exp $ # # Copyright 1999 by Russ Allbery # @@ -27,7 +27,7 @@ use vars qw(@ISA $VERSION); @ISA = qw(Pod::Text); # Use the CVS revision of this file as its version number. -($VERSION = (split (' ', q$Revision: 0.1 $ ))[1]) =~ s/\.(\d)$/.0$1/; +($VERSION = (split (' ', q$Revision: 0.5 $ ))[1]) =~ s/\.(\d)$/.0$1/; ############################################################################ @@ -100,10 +100,19 @@ Pod::Text::Color - Convert POD data to formatted color ASCII text =head1 DESCRIPTION -Pod::Text::Color is a simple subclass of Pod::Text that highlights -output text using ANSI color escape sequences. Apart from the color, it in -all ways functions like Pod::Text. See L for details -and available options. +Pod::Text::Color is a simple subclass of Pod::Text that highlights output +text using ANSI color escape sequences. Apart from the color, it in all +ways functions like Pod::Text. See L for details and available +options. + +Term::ANSIColor is used to get colors and therefore must be installed to use +this module. + +=head1 BUGS + +This is just a basic proof of concept. It should be seriously expanded to +support configurable coloration via options passed to the constructor, and +B should be taught about those. =head1 SEE ALSO diff --git a/lib/Pod/Text/Termcap.pm b/lib/Pod/Text/Termcap.pm index efb71a6..7e89ec6 100644 --- a/lib/Pod/Text/Termcap.pm +++ b/lib/Pod/Text/Termcap.pm @@ -1,14 +1,14 @@ # Pod::Text::Termcap -- Convert POD data to ASCII text with format escapes. -# $Id: Termcap.pm,v 0.1 1999/06/13 02:41:06 eagle Exp $ +# $Id: Termcap.pm,v 0.4 1999/09/20 10:17:45 eagle Exp $ # # Copyright 1999 by Russ Allbery # # This program is free software; you can redistribute it and/or modify it # under the same terms as Perl itself. # -# This is a simple subclass of Pod::Text that overrides a few key -# methods to output the right termcap escape sequences for formatted text -# on the current terminal type. +# This is a simple subclass of Pod::Text that overrides a few key methods to +# output the right termcap escape sequences for formatted text on the +# current terminal type. ############################################################################ # Modules and declarations @@ -21,13 +21,14 @@ require 5.004; use Pod::Text (); use POSIX (); use Term::Cap; + use strict; use vars qw(@ISA $VERSION); @ISA = qw(Pod::Text); # Use the CVS revision of this file as its version number. -($VERSION = (split (' ', q$Revision: 0.1 $ ))[1]) =~ s/\.(\d)$/.0$1/; +($VERSION = (split (' ', q$Revision: 0.4 $ ))[1]) =~ s/\.(\d)$/.0$1/; ############################################################################ @@ -125,10 +126,10 @@ Pod::Text::Color - Convert POD data to ASCII text with format escapes =head1 DESCRIPTION -Pod::Text::Termcap is a simple subclass of Pod::Text that highlights -output text using the correct termcap escape sequences for the current -terminal. Apart from the format codes, it in all ways functions like -Pod::Text. See L for details and available options. +Pod::Text::Termcap is a simple subclass of Pod::Text that highlights output +text using the correct termcap escape sequences for the current terminal. +Apart from the format codes, it in all ways functions like Pod::Text. See +L for details and available options. =head1 SEE ALSO diff --git a/pod/pod2man.PL b/pod/pod2man.PL index bc74feb..68d0c42 100644 --- a/pod/pod2man.PL +++ b/pod/pod2man.PL @@ -9,7 +9,6 @@ use Cwd; # have to mention them as if they were shell variables, not # %Config entries. Thus you write # $startperl -# $man3ext # to ensure Configure will look for $Config{startperl}. # This forces PL files to create target in same directory as PL file. @@ -29,1212 +28,440 @@ print "Extracting $file (with variable substitutions)\n"; print OUT <<"!GROK!THIS!"; $Config{startperl} eval 'exec $Config{perlpath} -S \$0 \${1+"\$@"}' - if \$running_under_some_shell; - -\$DEF_PM_SECTION = '$Config{man3ext}' || '3'; + if \$running_under_some_shell; !GROK!THIS! # In the following, perl variables are not expanded during extraction. print OUT <<'!NO!SUBS!'; -=head1 NAME - -pod2man - translate embedded Perl pod directives into man pages - -=head1 SYNOPSIS - -B -[ B<--section=>I ] -[ B<--release=>I ] -[ B<--center=>I ] -[ B<--date=>I ] -[ B<--fixed=>I ] -[ B<--official> ] -[ B<--lax> ] -I - -=head1 DESCRIPTION - -B converts its input file containing embedded pod directives (see -L) into nroff source suitable for viewing with nroff(1) or -troff(1) using the man(7) macro set. - -Besides the obvious pod conversions, B also takes care of -func(), func(n), and simple variable references like $foo or @bar so -you don't have to use code escapes for them; complex expressions like -C<$fred{'stuff'}> will still need to be escaped, though. Other nagging -little roffish things that it catches include translating the minus in -something like foo-bar, making a long dash--like this--into a real em -dash, fixing up "paired quotes", putting a little space after the -parens in something like func(), making C++ and PI look right, making -double underbars have a little tiny space between them, making ALLCAPS -a teeny bit smaller in troff(1), and escaping backslashes so you don't -have to. - -=head1 OPTIONS - -=over 8 - -=item center - -Set the centered header to a specific string. The default is -"User Contributed Perl Documentation", unless the C<--official> flag is -given, in which case the default is "Perl Programmers Reference Guide". - -=item date - -Set the left-hand footer string to this value. By default, -the modification date of the input file will be used. - -=item fixed - -The fixed font to use for code refs. Defaults to CW. - -=item official - -Set the default header to indicate that this page is of -the standard release in case C<--center> is not given. - -=item release - -Set the centered footer. By default, this is the current -perl release. - -=item section - -Set the section for the C<.TH> macro. The standard conventions on -sections are to use 1 for user commands, 2 for system calls, 3 for -functions, 4 for devices, 5 for file formats, 6 for games, 7 for -miscellaneous information, and 8 for administrator commands. This works -best if you put your Perl man pages in a separate tree, like -F. By default, section 1 will be used -unless the file ends in F<.pm> in which case section 3 will be selected. - -=item lax - -Don't complain when required sections aren't present. - -=back - -=head1 Anatomy of a Proper Man Page - -For those not sure of the proper layout of a man page, here's -an example of the skeleton of a proper man page. Head of the -major headers should be setout as a C<=head1> directive, and -are historically written in the rather startling ALL UPPER CASE -format, although this is not mandatory. -Minor headers may be included using C<=head2>, and are -typically in mixed case. - -=over 10 - -=item NAME +# pod2man -- Convert POD data to formatted *roff input. +# +# Copyright 1999 by Russ Allbery +# +# This program is free software; you can redistribute it and/or modify it +# under the same terms as Perl itself. +# +# The driver script for Pod::Man. This script is expected to eventually +# replace pod2man in the standard Perl distribution. + +require 5.004; + +use Getopt::Long qw(GetOptions); +use Pod::Man (); +use Pod::Usage qw(pod2usage); + +use strict; +use vars; + +# Parse our options, trying to retain backwards compatibility with pod2man +# but allowing short forms as well. --lax is currently ignored. +my %options; +Getopt::Long::config ('bundling'); +GetOptions (\%options, 'section|s=s', 'release|r=s', 'center|c=s', + 'date|d=s', 'fixed=s', 'fixedbold=s', 'fixeditalic=s', + 'fixedbolditalic=s', 'official|o', 'lax|l', 'help|h') or exit 1; +pod2usage (0) if $options{help}; + +# Official sets --center, but don't override things explicitly set. +if ($options{official} && !defined $options{center}) { + $options{center} = 'Perl Programmers Reference Guide'; +} -Mandatory section; should be a comma-separated list of programs or -functions documented by this podpage, such as: +# Initialize and run the formatter. +my $parser = Pod::Man->new (\%options); +$parser->parse_from_file (@ARGV); - foo, bar - programs to do something +__END__ -=item SYNOPSIS +=head1 NAME -A short usage summary for programs and functions, which -may someday be deemed mandatory. +pod2man - Convert POD data to formatted *roff input -=item DESCRIPTION +=head1 SYNOPSIS -Long drawn out discussion of the program. It's a good idea to break this -up into subsections using the C<=head2> directives, like +pod2txt [B<--section>=I] [B<--release>=I] +[B<--center>=I] [B<--date>=I] [B<--fixed>=I] +[B<--fixedbold>=I] [B<--fixeditalic>=I] +[B<--fixedbolditalic>=I] [B<--official>] [B<--lax>] [I +[I]] - =head2 A Sample Subection +pod2txt B<--help> - =head2 Yet Another Sample Subection +=head1 DESCRIPTION -=item OPTIONS +B is a front-end for Pod::Man, using it to generate *roff input +from POD source. The resulting *roff code is suitable for display on a +terminal using nroff(1), normally via man(1), or printing using troff(1). + +I is the file to read for POD source (the POD can be embedded in +code). If I isn't given, it defaults to STDIN. I, if given, +is the file to which to write the formatted output. If I isn't +given, the formatted output is written to STDOUT. + +B<--section>, B<--release>, B<--center>, B<--date>, and B<--official> can be +used to set the headers and footers to use; if not given, Pod::Man will +assume various defaults. See below or L for details. + +B assumes that your *roff formatters have a fixed-width font named +CW. If yours is called something else (like CR), use B<--fixed> to specify +it. This generally only matters for troff output for printing. Similarly, +you can set the fonts used for bold, italic, and bold italic fixed-width +output. + +Besides the obvious pod conversions, Pod::Man, and therefore pod2man also +takes care of formatting func(), func(n), and simple variable references +like $foo or @bar so you don't have to use code escapes for them; complex +expressions like C<$fred{'stuff'}> will still need to be escaped, though. +It also translates dashes that aren't used as hyphens into en dashes, makes +long dashes--like this--into proper em dashes, fixes "paired quotes," and +takes care of several other troff-specific tweaks. See L for +complete information. -Some people make this separate from the description. +=head1 OPTIONS -=item RETURN VALUE +=over 4 -What the program or function returns if successful. +=item B<-c> I, B<--center>=I -=item ERRORS +Sets the centered page header to I. The default is "User +Contributed Perl Documentation", but also see B<--official> below. -Exceptions, return codes, exit stati, and errno settings. +=item B<-d> I, B<--date>=I -=item EXAMPLES +Set the left-hand footer string to this value. By default, the modification +date of the input file will be used, or the current date if input comes from +STDIN. -Give some example uses of the program. +=item B<--fixed>=I -=item ENVIRONMENT +The fixed-width font to use for vertabim text and code. Defaults to CW. +Some systems may want CR instead. Only matters for troff(1) output. -Envariables this program might care about. +=item B<--fixedbold>=I -=item FILES +Bold version of the fixed-width font. Defaults to CB. Only matters for +troff(1) output. -All files used by the program. You should probably use the FEE -for these. +=item B<--fixeditalic>=I -=item SEE ALSO +Italic version of the fixed-width font (actually, something of a misnomer, +since most fixed-width fonts only have an oblique version, not an italic +version). Defaults to CI. Only matters for troff(1) output. -Other man pages to check out, like man(1), man(7), makewhatis(8), or catman(8). +=item B<--fixedbolditalic>=I -=item NOTES +Bold italic (probably actually oblique) version of the fixed-width font. +Pod::Man doesn't assume you have this, and defaults to CB. Some systems +(such as Solaris) have this font available as CX. Only matters for troff(1) +output. -Miscellaneous commentary. +=item B<-h>, B<--help> -=item CAVEATS +Print out usage information. -Things to take special care with; sometimes called WARNINGS. +=item B<-l>, B<--lax> -=item DIAGNOSTICS +Don't complain when required sections are missing. Not currently used, as +POD checking functionality is not yet implemented in Pod::Man. -All possible messages the program can print out--and -what they mean. +=item B<-o>, B<--official> -=item BUGS +Set the default header to indicate that this page is part of the standard +Perl release, if B<--center> is not also given. -Things that are broken or just don't work quite right. +=item B<-r>, B<--release> -=item RESTRICTIONS +Set the centered footer. By default, this is the version of Perl you run +B under. Note that some system an macro sets assume that the +centered footer will be a modification date and will prepend something like +"Last modified: "; if this is the case, you may want to set B<--release> to +the last modified date and B<--date> to the version number. -Bugs you don't plan to fix :-) +=item B<-s>, B<--section> -=item AUTHOR +Set the section for the C<.TH> macro. The standard section numbering +convention is to use 1 for user commands, 2 for system calls, 3 for +functions, 4 for devices, 5 for file formats, 6 for games, 7 for +miscellaneous information, and 8 for administrator commands. There is a lot +of variation here, however; some systems (like Solaris) use 4 for file +formats, 5 for miscellaneous information, and 7 for devices. Still others +use 1m instead of 8, or some mix of both. About the only section numbers +that are reliably consistent are 1, 2, and 3. -Who wrote it (or AUTHORS if multiple). +By default, section 1 will be used unless the file ends in .pm in which case +section 3 will be selected. -=item HISTORY +=back -Programs derived from other sources sometimes have this, or -you might keep a modification log here. +=head1 DIAGNOSTICS -=back +If B fails with errors, see L and L for +information about what those errors might mean. =head1 EXAMPLES pod2man program > program.1 - pod2man some_module.pm > /usr/perl/man/man3/some_module.3 + pod2man SomeModule.pm /usr/perl/man/man3/SomeModule.3 pod2man --section=7 note.pod > note.7 -=head1 DIAGNOSTICS +If you would like to print out a lot of man page continuously, you probably +want to set the C and D registers to set contiguous page numbering and +even/odd paging, at least on some versions of man(7). -The following diagnostics are generated by B. Items -marked "(W)" are non-fatal, whereas the "(F)" errors will cause -B to immediately exit with a non-zero status. + troff -man -rC1 -rD1 perl.1 perldata.1 perlsyn.1 ... -=over 4 +To get index entries on stderr, turn on the F register, as in: -=item bad option in paragraph %d of %s: ``%s'' should be [%s]<%s> + troff -man -rF1 perl.1 -(W) If you start include an option, you should set it off -as bold, italic, or code. +The indexing merely outputs messages via C<.tm> for each major page, +section, subsection, item, and any CE> directives. See +L for more details. -=item can't open %s: %s +=head1 BUGS -(F) The input file wasn't available for the given reason. +Lots of this documentation is duplicated from L. -=item Improper man page - no dash in NAME header in paragraph %d of %s +POD checking and the corresponding B<--lax> option don't work yet. -(W) The NAME header did not have an isolated dash in it. This is -considered important. +=head1 NOTES -=item Invalid man page - no NAME line in %s +For those not sure of the proper layout of a man page, here are some notes +on writing a proper man page. -(F) You did not include a NAME header, which is essential. +The name of the program being documented is conventionally written in bold +(using BEE) wherever it occurs, as are all program options. +Arguments should be written in italics (IEE). Functions are +traditionally written in italics; if you write a function as function(), +Pod::Man will take care of this for you. Literal code or commands should +be in CEE. References to other man pages should be in the form +C, and Pod::Man will automatically format those +appropriately. As an exception, it's traditional not to use this form when +referring to module documentation; use CModule::NameE> instead. -=item roff font should be 1 or 2 chars, not `%s' (F) +References to other programs or functions are normally in the form of man +page references so that cross-referencing tools can provide the user with +links and the like. It's possible to overdo this, though, so be careful not +to clutter your documentation with too much markup. -(F) The font specified with the C<--fixed> option was not -a one- or two-digit roff font. +The major headers should be set out using a C<=head1> directive, and are +historically written in the rather startling ALL UPPER CASE format, although +this is not mandatory. Minor headers may be included using C<=head2>, and +are typically in mixed case. -=item %s is missing required section: %s +The standard sections of a manual page are: -(W) Required sections include NAME, DESCRIPTION, and if you're -using a section starting with a 3, also a SYNOPSIS. Actually, -not having a NAME is a fatal. +=over 4 -=item Unknown escape: %s in %s +=item NAME -(W) An unknown HTML entity (probably for an 8-bit character) was given via -a CE> directive. Besides amp, lt, gt, and quot, recognized -entities are Aacute, aacute, Acirc, acirc, AElig, aelig, Agrave, agrave, -Aring, aring, Atilde, atilde, Auml, auml, Ccedil, ccedil, Eacute, eacute, -Ecirc, ecirc, Egrave, egrave, ETH, eth, Euml, euml, Iacute, iacute, Icirc, -icirc, Igrave, igrave, Iuml, iuml, Ntilde, ntilde, Oacute, oacute, Ocirc, -ocirc, Ograve, ograve, Oslash, oslash, Otilde, otilde, Ouml, ouml, szlig, -THORN, thorn, Uacute, uacute, Ucirc, ucirc, Ugrave, ugrave, Uuml, uuml, -Yacute, yacute, and yuml. +Mandatory section; should be a comma-separated list of programs or functions +documented by this podpage, such as: -=item Unmatched =back + foo, bar - programs to do something -(W) You have a C<=back> without a corresponding C<=over>. +Manual page indexers are often extremely picky about the format of this +section, so don't put anything in it except this line. A single dash, and +only a single dash, should separate the list of programs or functions from +the description. Functions should not be qualified with C<()> or the like. +The description should ideally fit on a single line, even if a man program +replaces the dash with a few tabs. -=item Unrecognized pod directive: %s +=item SYNOPSIS -(W) You specified a pod directive that isn't in the known list of -C<=head1>, C<=head2>, C<=item>, C<=over>, C<=back>, or C<=cut>. +A short usage summary for programs and functions. This section is mandatory +for section 3 pages. +=item DESCRIPTION -=back +Extended description and discussion of the program or functions, or the body +of the documentation for man pages that document something else. If +particularly long, it's a good idea to break this up into subsections +C<=head2> directives like: -=head1 NOTES + =head2 Normal Usage -If you would like to print out a lot of man page continuously, you -probably want to set the C and D registers to set contiguous page -numbering and even/odd paging, at least on some versions of man(7). -Settting the F register will get you some additional experimental -indexing: + =head2 Advanced Features - troff -man -rC1 -rD1 -rF1 perl.1 perldata.1 perlsyn.1 ... + =head2 Writing Configuration Files -The indexing merely outputs messages via C<.tm> for each -major page, section, subsection, item, and any CE> -directives. +or whatever is appropriate for your documentation. +=item OPTIONS -=head1 RESTRICTIONS +Detailed description of each of the command-line options taken by the +program. This should be separate from the description for the use of things +like L. This is normally presented as a list, with +each option as a separate C<=item>. The specific option string should be +enclosed in BEE. Any values that the option takes should be +enclosed in IEE. For example, the section for the option +B<--section>=I would be introduced with: -None at this time. + =item B<--section>=I -=head1 BUGS +Synonymous options (like both the short and long forms) are separated by a +comma and a space on the same C<=item> line, or optionally listed as their +own item with a reference to the canonical name. For example, since +B<--section> can also be written as B<-s>, the above would be: -The =over and =back directives don't really work right. They -take absolute positions instead of offsets, don't nest well, and -making people count is suboptimal in any event. + =item B<-s> I, B<--section>=I -=head1 AUTHORS +(Writing the short option first is arguably easier to read, since the long +option is long enough to draw the eye to it anyway and the short option can +otherwise get lost in visual noise.) -Original prototype by Larry Wall, but so massively hacked over by -Tom Christiansen such that Larry probably doesn't recognize it anymore. +=item RETURN VALUE -=cut +What the program or function returns, if successful. This section can be +omitted for programs whose precise exit codes aren't important, provided +they return 0 on success as is standard. It should always be present for +functions. -$/ = ""; -$cutting = 1; -@Indices = (); - -# We try first to get the version number from a local binary, in case we're -# running an installed version of Perl to produce documentation from an -# uninstalled newer version's pod files. -if ($^O ne 'plan9' and $^O ne 'dos' and $^O ne 'os2' and $^O ne 'MSWin32') { - my $perl = (-x './perl' && -f './perl' ) ? - './perl' : - ((-x '../perl' && -f '../perl') ? - '../perl' : - ''); - ($version,$patch) = `$perl -e 'print $]'` =~ /^(\d\.\d{3})(\d{2})?/ if $perl; -} -# No luck; we'll just go with the running Perl's version -($version,$patch) = $] =~ /^(.{5})(\d{2})?/ unless $version; -$DEF_RELEASE = "perl $version"; -$DEF_RELEASE .= ", patch $patch" if $patch; - - -sub makedate { - my $secs = shift; - my ($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = localtime($secs); - my $mname = (qw{Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec})[$mon]; - $year += 1900; - return "$mday/$mname/$year"; -} +=item ERRORS -use Getopt::Long; - -$DEF_SECTION = 1; -$DEF_CENTER = "User Contributed Perl Documentation"; -$STD_CENTER = "Perl Programmers Reference Guide"; -$DEF_FIXED = 'CW'; -$DEF_LAX = 0; - -sub usage { - warn "$0: @_\n" if @_; - die <, C<=item>, and C<=back>. For example: + =over 6 -$name = @ARGV ? $ARGV[0] : ""; -$Filename = $name; -if ($section =~ /^1/) { - require File::Basename; - $name = uc File::Basename::basename($name); -} -$name =~ s/\.(pod|p[lm])$//i; - -# Lose everything up to the first of -# */lib/*perl* standard or site_perl module -# */*perl*/lib from -D prefix=/opt/perl -# */*perl*/ random module hierarchy -# which works. -$name =~ s-//+-/-g; -if ($name =~ s-^.*?/lib/[^/]*perl[^/]*/--i - or $name =~ s-^.*?/[^/]*perl[^/]*/lib/--i - or $name =~ s-^.*?/[^/]*perl[^/]*/--i) { - # Lose ^site(_perl)?/. - $name =~ s-^site(_perl)?/--; - # Lose ^arch/. (XXX should we use Config? Just for archname?) - $name =~ s~^(.*-$^O|$^O-.*)/~~o; - # Lose ^version/. - $name =~ s-^\d+\.\d+/--; -} + =item HOME -# Translate Getopt/Long to Getopt::Long, etc. -$name =~ s(/)(::)g; - -if ($name ne 'something') { - FCHECK: { - open(F, "< $ARGV[0]") || die "can't open $ARGV[0]: $!"; - while () { - next unless /^=\b/; - if (/^=head1\s+NAME\s*$/) { # an /m would forgive mistakes - $_ = ; - unless (/\s*-+\s+/) { - $oops++; - warn "$0: Improper man page - no dash in NAME header in paragraph $. of $ARGV[0]\n" - } else { - my @n = split /\s+-+\s+/; - if (@n != 2) { - $oops++; - warn "$0: Improper man page - malformed NAME header in paragraph $. of $ARGV[0]\n" - } - else { - %namedesc = @n; - } - } - last FCHECK; - } - next if /^=cut\b/; # DB_File and Net::Ping have =cut before NAME - next if /^=pod\b/; # It is OK to have =pod before NAME - die "$0: Invalid man page - 1st pod line is not NAME in $ARGV[0]\n" unless $lax; - } - die "$0: Invalid man page - no documentation in $ARGV[0]\n" unless $lax; - } - close F; -} + Used to determine the user's home directory. F<.foorc> in this + directory is read for configuration details, if it exists. -print <<"END"; -.rn '' }` -''' \$RCSfile\$\$Revision\$\$Date\$ -''' -''' \$Log\$ -''' -.de Sh -.br -.if t .Sp -.ne 5 -.PP -\\fB\\\\\$1\\fR -.PP -.. -.de Sp -.if t .sp .5v -.if n .sp -.. -.de Ip -.br -.ie \\\\n(.\$>=3 .ne \\\\\$3 -.el .ne 3 -.IP "\\\\\$1" \\\\\$2 -.. -.de Vb -.ft $CFont -.nf -.ne \\\\\$1 -.. -.de Ve -.ft R - -.fi -.. -''' -''' -''' Set up \\*(-- to give an unbreakable dash; -''' string Tr holds user defined translation string. -''' Bell System Logo is used as a dummy character. -''' -.tr \\(*W-|\\(bv\\*(Tr -.ie n \\{\\ -.ds -- \\(*W- -.ds PI pi -.if (\\n(.H=4u)&(1m=24u) .ds -- \\(*W\\h'-12u'\\(*W\\h'-12u'-\\" diablo 10 pitch -.if (\\n(.H=4u)&(1m=20u) .ds -- \\(*W\\h'-12u'\\(*W\\h'-8u'-\\" diablo 12 pitch -.ds L" "" -.ds R" "" -''' \\*(M", \\*(S", \\*(N" and \\*(T" are the equivalent of -''' \\*(L" and \\*(R", except that they are used on ".xx" lines, -''' such as .IP and .SH, which do another additional levels of -''' double-quote interpretation -.ds M" """ -.ds S" """ -.ds N" """"" -.ds T" """"" -.ds L' ' -.ds R' ' -.ds M' ' -.ds S' ' -.ds N' ' -.ds T' ' -'br\\} -.el\\{\\ -.ds -- \\(em\\| -.tr \\*(Tr -.ds L" `` -.ds R" '' -.ds M" `` -.ds S" '' -.ds N" `` -.ds T" '' -.ds L' ` -.ds R' ' -.ds M' ` -.ds S' ' -.ds N' ` -.ds T' ' -.ds PI \\(*p -'br\\} -END - -print <<'END'; -.\" If the F register is turned on, we'll generate -.\" index entries out stderr for the following things: -.\" TH Title -.\" SH Header -.\" Sh Subsection -.\" Ip Item -.\" X<> Xref (embedded -.\" Of course, you have to process the output yourself -.\" in some meaninful fashion. -.if \nF \{ -.de IX -.tm Index:\\$1\t\\n%\t"\\$2" -.. -.nr % 0 -.rr F -.\} -END - -print <<"END"; -.TH $name $section "$date" "$RP" "$center" -.UC -END - -push(@Indices, qq{.IX Title "$name $section"}); - -while (($name, $desc) = each %namedesc) { - for ($name, $desc) { s/^\s+//; s/\s+$//; } - push(@Indices, qq(.IX Name "$name - $desc"\n)); -} + =back -print <<'END'; -.if n .hy 0 -.if n .na -.ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p' -.de CQ \" put $1 in typewriter font -END -print ".ft $CFont\n"; -print <<'END'; -'if n "\c -'if t \\&\\$1\c -'if n \\&\\$1\c -'if n \&" -\\&\\$2 \\$3 \\$4 \\$5 \\$6 \\$7 -'.ft R -.. -.\" @(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2 -. \" AM - accent mark definitions -.bd B 3 -. \" fudge factors for nroff and troff -.if n \{\ -. ds #H 0 -. ds #V .8m -. ds #F .3m -. ds #[ \f1 -. ds #] \fP -.\} -.if t \{\ -. ds #H ((1u-(\\\\n(.fu%2u))*.13m) -. ds #V .6m -. ds #F 0 -. ds #[ \& -. ds #] \& -.\} -. \" simple accents for nroff and troff -.if n \{\ -. ds ' \& -. ds ` \& -. ds ^ \& -. ds , \& -. ds ~ ~ -. ds ? ? -. ds ! ! -. ds / -. ds q -.\} -.if t \{\ -. ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u" -. ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u' -. ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u' -. ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u' -. ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u' -. ds ? \s-2c\h'-\w'c'u*7/10'\u\h'\*(#H'\zi\d\s+2\h'\w'c'u*8/10' -. ds ! \s-2\(or\s+2\h'-\w'\(or'u'\v'-.8m'.\v'.8m' -. ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u' -. ds q o\h'-\w'o'u*8/10'\s-4\v'.4m'\z\(*i\v'-.4m'\s+4\h'\w'o'u*8/10' -.\} -. \" troff and (daisy-wheel) nroff accents -.ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V' -.ds 8 \h'\*(#H'\(*b\h'-\*(#H' -.ds v \\k:\h'-(\\n(.wu*9/10-\*(#H)'\v'-\*(#V'\*(#[\s-4v\s0\v'\*(#V'\h'|\\n:u'\*(#] -.ds _ \\k:\h'-(\\n(.wu*9/10-\*(#H+(\*(#F*2/3))'\v'-.4m'\z\(hy\v'.4m'\h'|\\n:u' -.ds . \\k:\h'-(\\n(.wu*8/10)'\v'\*(#V*4/10'\z.\v'-\*(#V*4/10'\h'|\\n:u' -.ds 3 \*(#[\v'.2m'\s-2\&3\s0\v'-.2m'\*(#] -.ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#] -.ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H' -.ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u' -.ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#] -.ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#] -.ds ae a\h'-(\w'a'u*4/10)'e -.ds Ae A\h'-(\w'A'u*4/10)'E -.ds oe o\h'-(\w'o'u*4/10)'e -.ds Oe O\h'-(\w'O'u*4/10)'E -. \" corrections for vroff -.if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u' -.if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u' -. \" for low resolution devices (crt and lpr) -.if \n(.H>23 .if \n(.V>19 \ -\{\ -. ds : e -. ds 8 ss -. ds v \h'-1'\o'\(aa\(ga' -. ds _ \h'-1'^ -. ds . \h'-1'. -. ds 3 3 -. ds o a -. ds d- d\h'-1'\(ga -. ds D- D\h'-1'\(hy -. ds th \o'bp' -. ds Th \o'LP' -. ds ae ae -. ds Ae AE -. ds oe oe -. ds Oe OE -.\} -.rm #[ #] #H #V #F C -END - -$indent = 0; - -$begun = ""; - -# Unrolling [^-=A-Z>]|[A-Z](?!<)|[-=](?![A-Z]<)[\x00-\xFF] gives: // MRE pp 165. -my $nonest = q{(?x) # Turn on /x mode. - (?: # Group - [^-=A-Z>]* # Anything that isn't a dash, equal sign or - # closing hook isn't special. Eat as much as - # we can. - (?: # Group. - (?: # Group. - [-=] # We want to recognize -> and =>. - (?![A-Z]<) # So, as long as it isn't followed by markup - [\x00-\xFF] # anything may follow - and = - | - [A-Z] # Capitals are fine too, - (?!<) # But not if they start markup. - ) # End of special sequences. - [^-=A-Z>]* # Followed by zero or more non-special chars. - )* # And we can repeat this as often as we can. - )}; # That's all folks. - -while (<>) { - if ($cutting) { - next unless /^=/; - $cutting = 0; - } - if ($begun) { - if (/^=end\s+$begun/) { - $begun = ""; - } - elsif ($begun =~ /^(roff|man)$/) { - print STDOUT $_; - } - next; - } - chomp; - - # Translate verbatim paragraph - - if (/^\s/) { - @lines = split(/\n/); - for (@lines) { - 1 while s - {^( [^\t]* ) \t ( \t* ) } - { $1 . ' ' x (8 - (length($1)%8) + 8 * (length($2))) }ex; - s/\\/\\e/g; - s/\A/\\&/s; - } - $lines = @lines; - makespace() unless $verbatim++; - print ".Vb $lines\n"; - print join("\n", @lines), "\n"; - print ".Ve\n"; - $needspace = 0; - next; - } - - $verbatim = 0; - - if (/^=for\s+(\S+)\s*/s) { - if ($1 eq "man" or $1 eq "roff") { - print STDOUT $',"\n\n"; - } else { - # ignore unknown for - } - next; - } - elsif (/^=begin\s+(\S+)\s*/s) { - $begun = $1; - if ($1 eq "man" or $1 eq "roff") { - print STDOUT $'."\n\n"; - } - next; - } - - # check for things that'll hosed our noremap scheme; affects $_ - init_noremap(); - - if (!/^=item/) { - - # trofficate backslashes; must do it before what happens below - s/\\/noremap('\\e')/ge; - - # protect leading periods and quotes against *roff - # mistaking them for directives - s/^(?:[A-Z]<)?[.']/\\&$&/gm; - - # first hide the escapes in case we need to - # intuit something and get it wrong due to fmting - - 1 while s/([A-Z]<$nonest>)/noremap($1)/ge; - - # func() is a reference to a perl function - s{ - \b - ( - [:\w]+ \(\) - ) - } {I<$1>}gx; - - # func(n) is a reference to a perl function or a man page - s{ - ([:\w]+) - ( - \( [^\051]+ \) - ) - } {I<$1>\\|$2}gx; - - # convert simple variable references - s/(\s+)([\$\@%&*][\w:]+)(?!\()/${1}C<$2>/g; - - if (m{ ( - [\-\w]+ - \( - [^\051]*? - [\@\$,] - [^\051]*? - \) - ) - }x && $` !~ /([LCI]<[^<>]*|-)$/ && !/^=\w/) - { - warn "$0: bad option in paragraph $. of $ARGV: ``$1'' should be [LCI]<$1>\n"; - $oops++; - } - - while (/(-[a-zA-Z])\b/g && $` !~ /[\w\-]$/) { - warn "$0: bad option in paragraph $. of $ARGV: ``$1'' should be [CB]<$1>\n"; - $oops++; - } - - # put it back so we get the <> processed again; - clear_noremap(0); # 0 means leave the E's - - } else { - # trofficate backslashes - s/\\/noremap('\\e')/ge; - - } - - # need to hide E<> first; they're processed in clear_noremap - s/(E<[^<>]+>)/noremap($1)/ge; - - - $maxnest = 10; - while ($maxnest-- && /[A-Z]/font($1) . $2 . font('R')/eg; - - # files and filelike refs in italics - s/F<($nonest)>/I<$1>/g; - - # no break -- usually we want C<> for this - s/S<($nonest)>/nobreak($1)/eg; - - # LREF: a la HREF L - s:L<([^|>]+)\|[^>]+>:$1:g; - - # LREF: a manpage(3f) - s:L<([a-zA-Z][^\s\/]+)(\([^\)]+\))?>:the I<$1>$2 manpage:g; - - # LREF: an =item on another manpage - s{ - L< - ([^/]+) - / - ( - [:\w]+ - (\(\))? - ) - > - } {the C<$2> entry in the I<$1> manpage}gx; - - # LREF: an =item on this manpage - s{ - ((?: - L< - / - ( - [:\w]+ - (\(\))? - ) - > - (,?\s+(and\s+)?)? - )+) - } { internal_lrefs($1) }gex; - - # LREF: a =head2 (head1?), maybe on a manpage, maybe right here - # the "func" can disambiguate - s{ - L< - (?: - ([a-zA-Z]\S+?) / - )? - "?(.*?)"? - > - }{ - do { - $1 # if no $1, assume it means on this page. - ? "the section on I<$2> in the I<$1> manpage" - : "the section on I<$2>" - } - }gesx; # s in case it goes over multiple lines, so . matches \n - - s/Z<>/\\&/g; - - # comes last because not subject to reprocessing - s/C<($nonest)>/noremap("${CFont_embed}${1}\\fR")/eg; - } - - if (s/^=//) { - $needspace = 0; # Assume this. - - s/\n/ /g; - - ($Cmd, $_) = split(' ', $_, 2); - - $dotlevel = 1; - if ($Cmd eq 'head1') { - $dotlevel = 1; - } - elsif ($Cmd eq 'head2') { - $dotlevel = 1; - } - elsif ($Cmd eq 'item') { - $dotlevel = 2; - } - - if (defined $_) { - &escapes($dotlevel); - s/"/""/g; - } - - clear_noremap(1); - - if ($Cmd eq 'cut') { - $cutting = 1; - } - elsif ($Cmd eq 'head1') { - s/\s+$//; - delete $wanna_see{$_} if exists $wanna_see{$_}; - print qq{.SH "$_"\n}; - push(@Indices, qq{.IX Header "$_"\n}); - } - elsif ($Cmd eq 'head2') { - print qq{.Sh "$_"\n}; - push(@Indices, qq{.IX Subsection "$_"\n}); - } - elsif ($Cmd eq 'over') { - push(@indent,$indent); - $indent += ($_ + 0) || 5; - if ($#indent > 0) { - print ".RS ", $indent[$#indent] - $indent[$#indent - 1], "\n"; - } - } - elsif ($Cmd eq 'back') { - $indent = pop(@indent); - warn "$0: Unmatched =back in paragraph $. of $ARGV\n" unless defined $indent; - if ($#indent >= 0) { - print ".RE\n"; - } - $needspace = 1; - } - elsif ($Cmd eq 'item') { - s/^\*( |$)/\\(bu$1/g; - # if you know how to get ":s please do - s/\\\*\(L"([^"]+?)\\\*\(R"/'$1'/g; - s/\\\*\(L"([^"]+?)""/'$1'/g; - s/[^"]""([^"]+?)""[^"]/'$1'/g; - # here do something about the $" in perlvar? - print STDOUT qq{.Ip "$_" $indent-$indent[$#indent]\n}; - push(@Indices, qq{.IX Item "$_"\n}); - } - elsif ($Cmd eq 'pod') { - # this is just a comment - } - else { - warn "$0: Unrecognized pod directive in paragraph $. of $ARGV: $Cmd\n"; - } - } - else { - if ($needspace) { - &makespace; - } - &escapes(0); - clear_noremap(1); - print $_, "\n"; - $needspace = 1; - } -} +Since environment variables are normally in all uppercase, no additional +special formatting is generally needed; they're glaring enough as it is. -print <<"END"; +=item FILES -.rn }` '' -END +All files used by the program or function, normally presented as a list, and +what it uses them for. File names should be enclosed in FEE. It's +particularly important to document files that will be potentially modified. -if (%wanna_see && !$lax) { - @missing = keys %wanna_see; - warn "$0: $Filename is missing required section" - . (@missing > 1 && "s") - . ": @missing\n"; - $oops++; -} +=item CAVEATS -foreach (@Indices) { print "$_\n"; } +Things to take special care with, sometimes called WARNINGS. -exit; -#exit ($oops != 0); +=item BUGS -######################################################################### +Things that are broken or just don't work quite right. -sub nobreak { - my $string = shift; - $string =~ s/ /\\ /g; - $string; -} +=item RESTRICTIONS -sub escapes { - my $indot = shift; - - s/X<(.*?)>/mkindex($1)/ge; - - # translate the minus in foo-bar into foo\-bar for roff - s/([^0-9a-z-])-([^-])/$1\\-$2/g; - - # make -- into the string version \*(-- (defined above) - s/\b--\b/\\*(--/g; - s/"--([^"])/"\\*(--$1/g; # should be a better way - s/([^"])--"/$1\\*(--"/g; - - # fix up quotes; this is somewhat tricky - my $dotmacroL = 'L'; - my $dotmacroR = 'R'; - if ( $indot == 1 ) { - $dotmacroL = 'M'; - $dotmacroR = 'S'; - } - elsif ( $indot >= 2 ) { - $dotmacroL = 'N'; - $dotmacroR = 'T'; - } - if (!/""/) { - s/(^|\s)(['"])/noremap("$1\\*($dotmacroL$2")/ge; - s/(['"])($|[\-\s,;\\!?.])/noremap("\\*($dotmacroR$1$2")/ge; - } - - #s/(?!")(?:.)--(?!")(?:.)/\\*(--/g; - #s/(?:(?!")(?:.)--(?:"))|(?:(?:")--(?!")(?:.))/\\*(--/g; - - - # make sure that func() keeps a bit a space tween the parens - ### s/\b\(\)/\\|()/g; - ### s/\b\(\)/(\\|)/g; - - # make C++ into \*C+, which is a squinched version (defined above) - s/\bC\+\+/\\*(C+/g; - - # make double underbars have a little tiny space between them - s/__/_\\|_/g; - - # PI goes to \*(PI (defined above) - s/\bPI\b/noremap('\\*(PI')/ge; - - # make all caps a teeny bit smaller, but don't muck with embedded code literals - my $hidCFont = font('C'); - if ($Cmd !~ /^head1/) { # SH already makes smaller - # /g isn't enough; 1 while or we'll be off - -# 1 while s{ -# (?!$hidCFont)(..|^.|^) -# \b -# ( -# [A-Z][\/A-Z+:\-\d_$.]+ -# ) -# (s?) -# \b -# } {$1\\s-1$2\\s0}gmox; - - 1 while s{ - (?!$hidCFont)(..|^.|^) - ( - \b[A-Z]{2,}[\/A-Z+:\-\d_\$]*\b - ) - } { - $1 . noremap( '\\s-1' . $2 . '\\s0' ) - }egmox; - - } -} +Bugs you don't plan to fix. :-) -# make troff just be normal, but make small nroff get quoted -# decided to just put the quotes in the text; sigh; -sub ccvt { - local($_,$prev) = @_; - noremap(qq{.CQ "$_" \n\\&}); -} +=item NOTES -sub makespace { - if ($indent) { - print ".Sp\n"; - } - else { - print ".PP\n"; - } -} +Miscellaneous commentary. -sub mkindex { - my ($entry) = @_; - my @entries = split m:\s*/\s*:, $entry; - push @Indices, ".IX Xref " . join ' ', map {qq("$_")} @entries; - return ''; -} +=item SEE ALSO -sub font { - local($font) = shift; - return '\\f' . noremap($font); -} +Other man pages to check out, like man(1), man(7), makewhatis(8), or +catman(8). Normally a simple list of man pages separated by commas, or a +paragraph giving the name of a reference work. Man page references, if they +use the standard C form, don't have to be enclosed in +LEE, but other things in this section probably should be when +appropriate. You may need to use the C...|...E> syntax to keep +B and B from being too verbose; see perlpod(1). -sub noremap { - local($thing_to_hide) = shift; - $thing_to_hide =~ tr/\000-\177/\200-\377/; - return $thing_to_hide; -} +If the package has a web site, include a URL here. -sub init_noremap { - # escape high bit characters in input stream - s/([\200-\377])/"E<".ord($1).">"/ge; -} +=item AUTHOR -sub clear_noremap { - my $ready_to_print = $_[0]; - - tr/\200-\377/\000-\177/; - - # trofficate backslashes - # s/(?!\\e)(?:..|^.|^)\\/\\e/g; - - # now for the E<>s, which have been hidden until now - # otherwise the interative \w<> processing would have - # been hosed by the E - s { - E< - ( - ( \d + ) - | ( [A-Za-z]+ ) - ) - > - } { - do { - defined $2 - ? chr($2) - : - exists $HTML_Escapes{$3} - ? do { $HTML_Escapes{$3} } - : do { - warn "$0: Unknown escape in paragraph $. of $ARGV: ``$&''\n"; - "E<$1>"; - } - } - }egx if $ready_to_print; -} +Who wrote it (use AUTHORS for multiple people). Including your current +e-mail address (or some e-mail address to which bug reports should be sent) +so that users have a way of contacting you is a good idea. Remember that +program documentation tends to roam the wild for far longer than you expect +and pick an e-mail address that's likely to last if possible. -sub internal_lrefs { - local($_) = shift; - local $trailing_and = s/and\s+$// ? "and " : ""; - - s{L]+)>}{$1}g; - my(@items) = split( /(?:,?\s+(?:and\s+)?)/ ); - my $retstr = "the "; - my $i; - for ($i = 0; $i <= $#items; $i++) { - $retstr .= "C<$items[$i]>"; - $retstr .= ", " if @items > 2 && $i != $#items; - $retstr .= " and " if $i+2 == @items; - } - - $retstr .= " entr" . ( @items > 1 ? "ies" : "y" ) - . " elsewhere in this document"; - # terminal space to avoid words running together (pattern used - # strips terminal spaces) - $retstr .= " " if length $trailing_and; - $retstr .= $trailing_and; - - return $retstr; +=item HISTORY -} +Programs derived from other sources sometimes have this, or you might keep a +modification log here. -BEGIN { -%HTML_Escapes = ( - 'amp' => '&', # ampersand - 'lt' => '<', # left chevron, less-than - 'gt' => '>', # right chevron, greater-than - 'quot' => '"', # double quote - - "Aacute" => "A\\*'", # capital A, acute accent - "aacute" => "a\\*'", # small a, acute accent - "Acirc" => "A\\*^", # capital A, circumflex accent - "acirc" => "a\\*^", # small a, circumflex accent - "AElig" => '\*(AE', # capital AE diphthong (ligature) - "aelig" => '\*(ae', # small ae diphthong (ligature) - "Agrave" => "A\\*`", # capital A, grave accent - "agrave" => "A\\*`", # small a, grave accent - "Aring" => 'A\\*o', # capital A, ring - "aring" => 'a\\*o', # small a, ring - "Atilde" => 'A\\*~', # capital A, tilde - "atilde" => 'a\\*~', # small a, tilde - "Auml" => 'A\\*:', # capital A, dieresis or umlaut mark - "auml" => 'a\\*:', # small a, dieresis or umlaut mark - "Ccedil" => 'C\\*,', # capital C, cedilla - "ccedil" => 'c\\*,', # small c, cedilla - "Eacute" => "E\\*'", # capital E, acute accent - "eacute" => "e\\*'", # small e, acute accent - "Ecirc" => "E\\*^", # capital E, circumflex accent - "ecirc" => "e\\*^", # small e, circumflex accent - "Egrave" => "E\\*`", # capital E, grave accent - "egrave" => "e\\*`", # small e, grave accent - "ETH" => '\\*(D-', # capital Eth, Icelandic - "eth" => '\\*(d-', # small eth, Icelandic - "Euml" => "E\\*:", # capital E, dieresis or umlaut mark - "euml" => "e\\*:", # small e, dieresis or umlaut mark - "Iacute" => "I\\*'", # capital I, acute accent - "iacute" => "i\\*'", # small i, acute accent - "Icirc" => "I\\*^", # capital I, circumflex accent - "icirc" => "i\\*^", # small i, circumflex accent - "Igrave" => "I\\*`", # capital I, grave accent - "igrave" => "i\\*`", # small i, grave accent - "Iuml" => "I\\*:", # capital I, dieresis or umlaut mark - "iuml" => "i\\*:", # small i, dieresis or umlaut mark - "Ntilde" => 'N\*~', # capital N, tilde - "ntilde" => 'n\*~', # small n, tilde - "Oacute" => "O\\*'", # capital O, acute accent - "oacute" => "o\\*'", # small o, acute accent - "Ocirc" => "O\\*^", # capital O, circumflex accent - "ocirc" => "o\\*^", # small o, circumflex accent - "Ograve" => "O\\*`", # capital O, grave accent - "ograve" => "o\\*`", # small o, grave accent - "Oslash" => "O\\*/", # capital O, slash - "oslash" => "o\\*/", # small o, slash - "Otilde" => "O\\*~", # capital O, tilde - "otilde" => "o\\*~", # small o, tilde - "Ouml" => "O\\*:", # capital O, dieresis or umlaut mark - "ouml" => "o\\*:", # small o, dieresis or umlaut mark - "szlig" => '\*8', # small sharp s, German (sz ligature) - "THORN" => '\\*(Th', # capital THORN, Icelandic - "thorn" => '\\*(th',, # small thorn, Icelandic - "Uacute" => "U\\*'", # capital U, acute accent - "uacute" => "u\\*'", # small u, acute accent - "Ucirc" => "U\\*^", # capital U, circumflex accent - "ucirc" => "u\\*^", # small u, circumflex accent - "Ugrave" => "U\\*`", # capital U, grave accent - "ugrave" => "u\\*`", # small u, grave accent - "Uuml" => "U\\*:", # capital U, dieresis or umlaut mark - "uuml" => "u\\*:", # small u, dieresis or umlaut mark - "Yacute" => "Y\\*'", # capital Y, acute accent - "yacute" => "y\\*'", # small y, acute accent - "yuml" => "y\\*:", # small y, dieresis or umlaut mark -); -} +=back + +In addition, some systems use CONFORMING TO to note conformance to relevant +standards and MT-LEVEL to note safeness for use in threaded programs or +signal handlers. These headings are primarily useful when documenting parts +of a C library. Documentation of object-oriented libraries or modules may +use CONSTRUCTORS and METHODS sections for detailed documentation of the +parts of the library and save the DESCRIPTION section for an overview; other +large modules may use FUNCTIONS for similar reasons. Some people use +OVERVIEW to summarize the description if it's quite long. Sometimes there's +an additional COPYRIGHT section at the bottom, for licensing terms. +AVAILABILITY is sometimes added, giving the canonical download site for the +software or a URL for updates. + +Section ordering varies, although NAME should I be the first section +(you'll break some man page systems otherwise), and NAME, SYNOPSIS, +DESCRIPTION, and OPTIONS generally always occur first and in that order if +present. In general, SEE ALSO, AUTHOR, and similar material should be left +for last. Some systems also move WARNINGS and NOTES to last. The order +given above should be reasonable for most purposes. + +Finally, as a general note, try not to use an excessive amount of markup. +As documented here and in L, you can safely leave Perl variables, +function names, man page references, and the like unadorned by markup and +the POD translators will figure it out for you. This makes it much easier +to later edit the documentation. Note that many existing translators +(including this one currently) will do the wrong thing with e-mail addresses +or URLs when wrapped in LEE, so don't do that. + +For additional information that may be more accurate for your specific +system, see either man(5) or man(7) depending on your system manual section +numbering conventions. + +=head1 SEE ALSO + +L, L, man(1), nroff(1), +troff(1), man(7) + +The man page documenting the an macro set may be man(5) instead of man(7) on +your system. + +=head1 AUTHOR + +Russ Allbery Erra@stanford.eduE, based I heavily on the +original B by Larry Wall and Tom Christiansen. Large portions of +this documentation, particularly the sections on the anatomy of a proper man +page, are taken from the B documentation by Tom. +=cut !NO!SUBS! close OUT or die "Can't close $file: $!"; diff --git a/pod/pod2text.PL b/pod/pod2text.PL index 92b26fe..79cf8b2 100644 --- a/pod/pod2text.PL +++ b/pod/pod2text.PL @@ -28,23 +28,22 @@ print "Extracting $file (with variable substitutions)\n"; print OUT <<"!GROK!THIS!"; $Config{startperl} eval 'exec $Config{perlpath} -S \$0 \${1+"\$@"}' - if \$running_under_some_shell; + if \$running_under_some_shell; !GROK!THIS! # In the following, perl variables are not expanded during extraction. print OUT <<'!NO!SUBS!'; -$ID = q$Id: pod2text,v 0.1 1999/06/13 02:42:18 eagle Exp $; - # pod2text -- Convert POD data to formatted ASCII text. -# Copyright 1999 by Russ Allbery +# +# Copyright 1999 by Russ Allbery # # This program is free software; you can redistribute it and/or modify it # under the same terms as Perl itself. # -# The driver script for Pod::Text, Pod::Text::Termcap, and -# Pod::Text::Color, invoked by perldoc -t among other things. +# The driver script for Pod::Text, Pod::Text::Termcap, and Pod::Text::Color, +# invoked by perldoc -t among other things. require 5.004; @@ -65,8 +64,8 @@ for (my $i = 0; $i < @ARGV; $i++) { } } -# Parse our options. Use the same names as Pod::Text for simplicity, -# and default to sentence boundaries turned off for compatibility. +# Parse our options. Use the same names as Pod::Text for simplicity, and +# default to sentence boundaries turned off for compatibility. my %options; $options{termcap} = -t STDOUT; $options{sentence} = 0; @@ -79,6 +78,8 @@ pod2usage (1) if $options{help}; my $formatter = 'Pod::Text'; if ($options{color}) { $formatter = 'Pod::Text::Color'; + eval { require Term::ANSIColor }; + if ($@) { die "-c (--color) requires Term::ANSIColor be installed\n" } require Pod::Text::Color; } elsif ($options{termcap}) { $formatter = 'Pod::Text::Termcap'; @@ -104,16 +105,19 @@ pod2text B<-h> =head1 DESCRIPTION -B is a front-end for Pod::Text and its subclasses. It uses -them to generate formatted ASCII text from POD source. It can optionally -use either termcap sequences or ANSI color escape sequences to format the -text. +B is a front-end for Pod::Text and its subclasses. It uses them +to generate formatted ASCII text from POD source. It can optionally use +either termcap sequences or ANSI color escape sequences to format the text. I is the file to read for POD source (the POD can be embedded in code). If I isn't given, it defaults to STDIN. I, if given, is the file to which to write the formatted output. If I isn't given, the formatted output is written to STDOUT. +B defaults to trying to use Pod::Text::Termcap if STDOUT is a tty. +To explicitly say not to attempt termcap escape sequences, use +B<--notermcap>. + =head1 OPTIONS =over 4 @@ -133,17 +137,20 @@ requires that Term::ANSIColor be installed on your system. Set the number of spaces to indent regular text, and the default indentation for C<=over> blocks. Defaults to 4 spaces if this option isn't given. +=item B<-h>, B<--help> + +Print out usage information and exit. + =item B<-l>, B<--loose> Print a blank line after a C<=head1> heading. Normally, no blank line is -printed after C<=head1>, although one is still printed after C<=head2>. -This is the default because it's the expected formatting for manual pages; -if you're formatting arbitrary text documents, using this option is -recommended. +printed after C<=head1>, although one is still printed after C<=head2>, +because this is the expected formatting for manual pages; if you're +formatting arbitrary text documents, using this option is recommended. =item B<-s>, B<--sentence> -Assume each sentence ends in two spaces and try to preserve that spacing. +Assume each sentence ends with two spaces and try to preserve that spacing. Without this option, all consecutive whitespace in non-verbatim paragraphs is compressed into a single space. @@ -154,8 +161,8 @@ sequences for the terminal from termcap, and use that information in formatting the output. Output will be wrapped at two columns less than the width of your terminal device. Using this option requires that your system have a termcap file somewhere where Term::Cap can find it. With this -option, the output of B will contain terminal control sequences for -your current terminal type. +option, the output of B will contain terminal control sequences +for your current terminal type. =item B<-w>, B<--width=>I, B<->I @@ -165,6 +172,28 @@ your terminal device. =back +=head1 DIAGNOSTICS + +If B fails with errors, see L and L for +information about what those errors might mean. Internally, it can also +produce the following diagnostics: + +=over 4 + +=item -c (--color) requires Term::ANSIColor be installed + +(F) B<-c> or B<--color> were given, but Term::ANSIColor could not be +loaded. + +=item Unknown option: %s + +(F) An unknown command line option was given. + +=back + +In addition, other L error messages may result +from invalid command-line options. + =head1 ENVIRONMENT =over 4 @@ -183,11 +212,6 @@ current terminal device. =back -=head1 DIAGNOSTICS - -If B fails with POD errors, see L and -L for information about what those errors might mean. - =head1 SEE ALSO L, L,