| #!/usr/local/bin/perl -w |
| |
| # Generate a short man page from --help and --version output. |
| # Copyright © 1997, 98, 99 Free Software Foundation, Inc. |
| |
| # This program is free software; you can redistribute it and/or modify |
| # it under the terms of the GNU General Public License as published by |
| # the Free Software Foundation; either version 2, or (at your option) |
| # any later version. |
| |
| # This program is distributed in the hope that it will be useful, |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| # GNU General Public License for more details. |
| |
| # You should have received a copy of the GNU General Public License |
| # along with this program; if not, write to the Free Software Foundation, |
| # Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| |
| # Written by Brendan O'Dea <bod@compusol.com.au> |
| # Available from ftp://ftp.gnu.org/gnu/help2man/ |
| |
| use 5.004; |
| use strict; |
| use Getopt::Long; |
| use Text::Tabs qw(expand); |
| use POSIX qw(strftime setlocale LC_TIME); |
| |
| my $this_program = 'help2man'; |
| my $this_version = '1.016'; |
| my $version_info = <<EOT; |
| $this_program $this_version |
| |
| Copyright (C) 1997, 98, 99 Free Software Foundation, Inc. |
| This is free software; see the source for copying conditions. There is NO |
| warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| |
| Written by Brendan O'Dea <bod\@compusol.com.au> |
| EOT |
| |
| my $help_info = <<EOT; |
| `$this_program' generates a man page out of `--help' and `--version' output. |
| |
| Usage: $this_program [OPTION]... EXECUTABLE |
| |
| -n, --name=STRING use `STRING' as the description for the NAME paragraph |
| -s, --section=SECTION use `SECTION' as the section for the man page |
| -i, --include=FILE include material from `FILE' |
| -I, --opt-include=FILE include material from `FILE' if it exists |
| -o, --output=FILE send output to `FILE' |
| -N, --no-info suppress pointer to Texinfo manual |
| --help print this help, then exit |
| --version print version number, then exit |
| |
| EXECUTABLE should accept `--help' and `--version' options. |
| EOT |
| |
| my $section = 1; |
| my ($include, $opt_name, $opt_include, $opt_output, $opt_no_info); |
| |
| # Parse options. |
| Getopt::Long::config('bundling'); |
| GetOptions ( |
| 'n|name=s' => \$opt_name, |
| 's|section=s' => \$section, |
| 'i|include=s' => \$include, |
| 'I|opt-include=s' => \$opt_include, |
| 'o|output=s' => \$opt_output, |
| 'N|no-info' => \$opt_no_info, |
| help => sub { print $help_info; exit }, |
| version => sub { print $version_info; exit }, |
| ) or die $help_info; |
| |
| die $help_info unless @ARGV == 1; |
| |
| my %include = (); |
| my @include = (); # retain order given in include file |
| |
| # Process include file (if given). Format is: |
| # |
| # [section name] |
| # verbatim text |
| |
| if ($include or $opt_include) |
| { |
| if (open INC, $include || $opt_include) |
| { |
| my $sect; |
| |
| while (<INC>) |
| { |
| if (/^\[([^]]+)\]/) |
| { |
| $sect = uc $1; |
| $sect =~ s/^\s+//; |
| $sect =~ s/\s+$//; |
| next; |
| } |
| |
| # Silently ignore anything before the first |
| # section--allows for comments and revision info. |
| next unless $sect; |
| |
| push @include, $sect unless $include{$sect}; |
| $include{$sect} ||= ''; |
| $include{$sect} .= $_; |
| } |
| |
| close INC; |
| |
| die "$this_program: no valid information found in `$include'\n" |
| unless %include; |
| |
| # Compress trailing blank lines. |
| for (keys %include) { $include{$_} =~ s/\n+$/\n/ } |
| } |
| else |
| { |
| die "$this_program: can't open `$include' ($!)\n" if $include; |
| } |
| } |
| |
| # Turn off localisation of executable's ouput. |
| @ENV{qw(LANGUAGE LANG LC_ALL)} = ('C') x 3; |
| |
| # Turn off localisation of date (for strftime). |
| setlocale LC_TIME, 'C'; |
| |
| # Grab help and version info from executable. |
| my $help_text = join '', map { expand $_ } `$ARGV[0] --help 2>/dev/null` |
| or die "$this_program: can't get `--help' info from $ARGV[0]\n"; |
| |
| my $version_text = join '', map { expand $_ } `$ARGV[0] --version 2>/dev/null` |
| or die "$this_program: can't get `--version' info from $ARGV[0]\n"; |
| |
| my $date = strftime "%B %Y", localtime; |
| (my $program = $ARGV[0]) =~ s!.*/!!; |
| my $package = $program; |
| my $version; |
| |
| if ($opt_output) |
| { |
| unlink $opt_output |
| or die "$this_program: can't unlink $opt_output ($!)\n" |
| if -e $opt_output; |
| |
| open STDOUT, ">$opt_output" |
| or die "$this_program: can't create $opt_output ($!)\n"; |
| } |
| |
| # The first line of the --version information is assumed to be in one |
| # of the following formats: |
| # |
| # <version> |
| # <program> <version> |
| # {GNU,Free} <program> <version> |
| # <program> ({GNU,Free} <package>) <version> |
| # <program> - {GNU,Free} <package> <version> |
| # |
| # and seperated from any copyright/author details by a blank line. |
| |
| ($_, $version_text) = split /\n+/, $version_text, 2; |
| |
| if (/^(\S+) +\(((?:GNU|Free) +[^)]+)\) +(.*)/ or |
| /^(\S+) +- *((?:GNU|Free) +\S+) +(.*)/) |
| { |
| $program = $1; |
| $package = $2; |
| $version = $3; |
| } |
| elsif (/^((?:GNU|Free) +)?(\S+) +(.*)/) |
| { |
| $program = $2; |
| $package = $1 ? "$1$2" : $2; |
| $version = $3; |
| } |
| else |
| { |
| $version = $_; |
| } |
| |
| $program =~ s!.*/!!; |
| |
| # No info for `info' itself. |
| $opt_no_info = 1 if $program eq 'info'; |
| |
| # --name overrides --include contents. |
| $include{NAME} = "$program \\- $opt_name\n" if $opt_name; |
| |
| # Default (useless) NAME paragraph. |
| $include{NAME} ||= "$program \\- manual page for $program $version\n"; |
| |
| # Man pages traditionally have the page title in caps. |
| my $PROGRAM = uc $program; |
| |
| # Extract usage clause(s) [if any] for SYNOPSIS. |
| if ($help_text =~ s/^Usage: +(\S.*)(\n *or: +\S.*)*//m) |
| { |
| my @syn = $1; |
| |
| if ($_ = $2) |
| { |
| for (split /\n/) { push @syn, $1 if /or: +(\S.*)/ } |
| } |
| |
| my $synopsis = ''; |
| for (@syn) |
| { |
| $synopsis .= ".br\n" if $synopsis; |
| s/(\S+) *//; |
| $synopsis .= ".B $1\n"; |
| s/\s+$//; |
| s/(([][]|\.\.+)+)/\\fR$1\\fI/g; |
| s/^/\\fI/ unless s/^\\fR//; |
| $_ .= '\fR'; |
| s/(\\fI)( *)/$2$1/g; |
| s/\\fI\\fR//g; |
| s/^\\fR//; |
| s/\\fI$//; |
| s/^\./\\&./; |
| |
| $synopsis .= "$_\n"; |
| } |
| |
| $include{SYNOPSIS} ||= $synopsis; |
| } |
| |
| # Process text, initial section is DESCRIPTION. |
| my $sect = 'DESCRIPTION'; |
| $_ = "$help_text\n\n$version_text"; |
| |
| # Normalise paragraph breaks. |
| s/^\n+//; |
| s/\n*$/\n/; |
| s/\n\n+/\n\n/g; |
| |
| # Temporarily exchange leading dots and backslashes for tokens. |
| s/^\./\x80/mg; |
| s/\\/\x81/g; |
| |
| sub convert_option; |
| |
| while (length) |
| { |
| # Convert some standard paragraph names. |
| if (s/^(Options|Examples): *\n//) |
| { |
| $sect = uc $1; |
| next; |
| } |
| |
| # Copyright section |
| if (/^Copyright [\(\xa9]/) |
| { |
| $sect = 'COPYRIGHT'; |
| $include{$sect} ||= ''; |
| $include{$sect} .= ".PP\n" if $include{$sect}; |
| |
| my $copy; |
| ($copy, $_) = split /\n\n/, $_, 2; |
| |
| for ($copy) |
| { |
| # Add back newline |
| s/\n*$/\n/; |
| |
| # Convert iso9959-1 copyright symbol or (c) to nroff |
| # character. |
| s/^Copyright (?:\xa9|\([Cc]\))/Copyright \\(co/mg; |
| |
| # Insert line breaks before additional copyright messages |
| # and the disclaimer. |
| s/(.)\n(Copyright |This is free software)/$1\n.br\n$2/g; |
| |
| # Join hyphenated lines. |
| s/([A-Za-z])-\n */$1/g; |
| } |
| |
| $include{$sect} .= $copy; |
| $_ ||= ''; |
| next; |
| } |
| |
| # Catch bug report text. |
| if (/^(Report bugs|Email bug reports to) /) |
| { |
| $sect = 'REPORTING BUGS'; |
| } |
| |
| # Author section. |
| elsif (/^Written +by/) |
| { |
| $sect = 'AUTHOR'; |
| } |
| |
| # Examples, indicated by an indented leading $, % or > are |
| # rendered in a constant width font. |
| if (/^( +)([\$\%>] )\S/) |
| { |
| my $indent = $1; |
| my $prefix = $2; |
| my $break = '.IP'; |
| $include{$sect} ||= ''; |
| while (s/^$indent\Q$prefix\E(\S.*)\n*//) |
| { |
| $include{$sect} .= "$break\n\\f(CW$prefix$1\\fR\n"; |
| $break = '.br'; |
| } |
| |
| next; |
| } |
| |
| $include{$sect} ||= ''; |
| # Sub-sections have a trailing colon and the second line indented. |
| if (s/^(\S.*:) *\n / /) |
| { |
| $include{$sect} .= qq(.SS "$1"\n); |
| } |
| |
| my $indent = 0; |
| my $content = ''; |
| |
| # Tagged paragraph (option). |
| if (s/^( {1,10}(-\S+(?:, *-\S+)*))(?: +|\n( {20,}))([^\s-].*)\n//) |
| { |
| $indent = length ($3 || $1); |
| my $tag = $2; |
| my $desc = $4; |
| unless ($3) |
| { |
| $indent = length $1; |
| $indent = length $1 if /^( {20,})[^\s-]/; |
| } |
| |
| $content = ".TP\n\x82$tag\n\x82$desc\n"; |
| } |
| |
| # Tagged paragraph (other). |
| elsif (s/^( +(\S.*?) +)(\S.*)\n//) |
| { |
| $indent = length $1; |
| $content = ".TP\n\x82$2\n\x82$3\n"; |
| } |
| |
| # Indented paragraph. |
| elsif (s/^( +)(\S.*)\n//) |
| { |
| $indent = length $1; |
| $content = ".IP\n\x82$2\n"; |
| } |
| |
| # Left justified paragraph. |
| else |
| { |
| s/(.*)\n//; |
| $content = ".PP\n" if $include{$sect}; |
| $content .= "$1\n"; |
| } |
| |
| # Append continuations. |
| $content .= "\x82$1\n" while s/^ {$indent}(\S.*)\n//; |
| |
| # Move to next paragraph. |
| s/^\n+//; |
| |
| for ($content) |
| { |
| # Leading dot protection. |
| s/\x82\./\x80/g; |
| s/\x82//g; |
| |
| # Convert options. |
| s/(^| )(-[][\w=-]+)/$1 . convert_option $2/mge; |
| } |
| |
| $include{$sect} .= $content; |
| } |
| |
| # Refer to the real documentation. |
| unless ($opt_no_info) |
| { |
| $sect = 'SEE ALSO'; |
| $include{$sect} ||= ''; |
| $include{$sect} .= ".PP\n" if $include{$sect}; |
| $include{$sect} .= <<EOT; |
| The full documentation for |
| .B $program |
| is maintained as a Texinfo manual. If the |
| .B info |
| and |
| .B $program |
| programs are properly installed at your site, the command |
| .IP |
| .B info $program |
| .PP |
| should give you access to the complete manual. |
| EOT |
| } |
| |
| # Output header. |
| print <<EOT; |
| .\\" DO NOT MODIFY THIS FILE! It was generated by $this_program $this_version. |
| .TH $PROGRAM "$section" "$date" "$package $version" FSF |
| EOT |
| |
| # Section ordering. |
| my @pre = qw(NAME SYNOPSIS DESCRIPTION OPTIONS EXAMPLES); |
| my @post = ('AUTHOR', 'REPORTING BUGS', 'COPYRIGHT', 'SEE ALSO'); |
| my $filter = join '|', @pre, @post; |
| |
| # Output content. |
| for (@pre, (grep ! /^($filter)$/o, @include), @post) |
| { |
| if ($include{$_}) |
| { |
| my $quote = /\W/ ? '"' : ''; |
| print ".SH $quote$_$quote\n"; |
| |
| for ($include{$_}) |
| { |
| # Replace leading dot an backslash tokens. |
| s/\x80/\\&./g; |
| s/\x81/\\e/g; |
| print; |
| } |
| } |
| } |
| |
| exit; |
| |
| # Convert option dashes to \- to stop nroff from hyphenating 'em, and |
| # embolden. Option arguments get italicised. |
| sub convert_option |
| { |
| local $_ = '\fB' . shift; |
| |
| s/-/\\-/g; |
| unless (s/\[=(.*)\]$/\\fR[=\\fI$1\\fR]/) |
| { |
| s/=(.)/\\fR=\\fI$1/; |
| s/ (.)/ \\fI$1/; |
| $_ .= '\fR'; |
| } |
| |
| $_; |
| } |