texi2pod.pl: Restructure for comprehensibility, add comments.
* texi2pod.pl: Restructure for comprehensibility, add comments. Merge handling of @ignore and @ifxxx. Handle a whole bunch more Texinfo commands. Use consistent formatting style. From-SVN: r38052
This commit is contained in:
Zack Weinberg
Zack Weinberg
parent
f4c79fef19
commit
b75d998f0e
2 changed files with 191 additions and 103 deletions
|
|
@ -1,3 +1,10 @@
|
|||
2000-12-05 Zack Weinberg <zack@wolery.stanford.edu>
|
||||
|
||||
* texi2pod.pl: Restructure for comprehensibility, add
|
||||
comments. Merge handling of @ignore and @ifxxx. Handle a
|
||||
whole bunch more Texinfo commands. Use consistent formatting
|
||||
style.
|
||||
|
||||
2000-12-04 Joseph S. Myers <jsm28@cam.ac.uk>
|
||||
|
||||
* gennews: New script.
|
||||
|
|
|
|||
|
|
@ -5,7 +5,6 @@
|
|||
# something suitable for a manpage from a Texinfo document.
|
||||
|
||||
$output = 0;
|
||||
$ignore = 0;
|
||||
$skipping = 0;
|
||||
%sects = ();
|
||||
$section = "";
|
||||
|
|
@ -14,9 +13,9 @@ $section = "";
|
|||
@skstack = ();
|
||||
$shift = "";
|
||||
%defs = ();
|
||||
$fnno = 1;
|
||||
|
||||
while($_ = shift)
|
||||
{
|
||||
while ($_ = shift) {
|
||||
if (/^-D(.*)$/) {
|
||||
if ($1 ne "") {
|
||||
$flag = $1;
|
||||
|
|
@ -46,119 +45,133 @@ if (defined $out) {
|
|||
|
||||
while(<STDIN>)
|
||||
{
|
||||
# Certain commands are discarded without further processing.
|
||||
/^\@(?:
|
||||
[a-z]+index # @*index: useful only in complete manual
|
||||
|need # @need: useful only in printed manual
|
||||
|(?:end\s+)?group # @group .. @end group: ditto
|
||||
|page # @page: ditto
|
||||
|node # @node: useful only in .info file
|
||||
)\b/x and next;
|
||||
|
||||
chomp;
|
||||
|
||||
# Look for filename and title markers.
|
||||
/^\@setfilename\s+([^.]+)/ and $fn = $1, next;
|
||||
/^\@settitle\s+([^.]+)/ and $tl = $1, next;
|
||||
|
||||
# Look for blocks surrounded by @c man begin SECTION ... @c man end.
|
||||
# This really oughta be @ifman ... @end ifman and the like, but such
|
||||
# would require rev'ing all other Texinfo translators.
|
||||
/^\@c man begin ([A-Z]+)/ and $sect = $1, $output = 1, next;
|
||||
/^\@c man end/ and do {
|
||||
$_ = $section;
|
||||
|
||||
s/\@(?:dfn|var|emph|cite)\{([^\}]*)\}/I<$1>/g;
|
||||
s/\@(?:code|kbd)\{([^\}]*)\}/C<$1>/g;
|
||||
s/\@(?:samp|strong|key)\{([^\}]*)\}/B<$1>/g;
|
||||
s/\@value\{([a-zA-Z0-9_-]+)\}/$defs{$1}/g;
|
||||
s/\@sc\{([^\}]*)\}/\U$1/g;
|
||||
s/\@file\{([^\}]*)\}/F<$1>/g;
|
||||
s/\@(?:url|email)\{([^\}]*)\}/E<lt>C<$1>E<rt>/g;
|
||||
s/\@xref\{(?:[^\}]*)\}[^.]*.//g;
|
||||
s/\s+\(\@p[a-z]?ref\{(?:[^\}]*)\}\)//g;
|
||||
s/\@copyright\{\}//g;
|
||||
s/\@noindent\s*//g;
|
||||
s/\@refill//g;
|
||||
s/\@\././g;
|
||||
|
||||
# Turn B<blah I<blah> blah> into B<blah> I<blah> B<blah> to
|
||||
# match Texinfo semantics of @emph inside @samp.
|
||||
|
||||
s/</</g;
|
||||
s/>/>/g;
|
||||
1 while (s/B<([^<>]*)I<([^>]+)>/B<$1>I<$2>B</g);
|
||||
1 while (s/I<([^<>]*)B<([^>]+)>/I<$1>B<$2>I</g);
|
||||
s/[BI]<>//g;
|
||||
s/([BI])<(\s+)([^>]+)>/$2$1<$3>/g;
|
||||
s/([BI])<([^>]+?)(\s+)>/$1<$2>$3/g;
|
||||
|
||||
s/</E<lt>/g;
|
||||
s/>/E<gt>/g;
|
||||
s/{/\{/g;
|
||||
s/}/\}/g;
|
||||
|
||||
$sects{$sect} = $_;
|
||||
$sects{$sect} = postprocess($section);
|
||||
$section = "";
|
||||
$output = 0;
|
||||
next;
|
||||
};
|
||||
|
||||
/^\@(c|[a-z]+index)\b/ and next;
|
||||
/^\@subsection/ and next;
|
||||
/^\@need/ and next;
|
||||
/^\@node/ and next;
|
||||
|
||||
/^\@setfilename\s+([^.]+)/ and $fn = $1, next;
|
||||
/^\@settitle\s+([^.]+)/ and $tl = $1, next;
|
||||
|
||||
next unless $output;
|
||||
|
||||
/^\@end\s+([a-z]+)/ and do {
|
||||
if(defined $endw)
|
||||
{
|
||||
die "\@$endw ended by \@end $1 at line $.\n"
|
||||
unless $1 eq $endw;
|
||||
# Discard comments. (Can't do it above, because then we'd never see
|
||||
# @c man lines.)
|
||||
/^\@c\b/ and next;
|
||||
|
||||
if($endw =~ /example$/)
|
||||
{
|
||||
$shift = "";
|
||||
$_ = "";
|
||||
}
|
||||
elsif($endw =~ /^if/)
|
||||
{
|
||||
$skipping = pop @skstack;
|
||||
$_ = "";
|
||||
}
|
||||
else
|
||||
{
|
||||
$_ = "\n=back\n";
|
||||
$ic = pop @icstack;
|
||||
}
|
||||
$endw = pop @endwstack;
|
||||
# End-block handler goes up here because it needs to operate even
|
||||
# if we are skipping.
|
||||
/^\@end\s+([a-z]+)/ and do {
|
||||
die "\@end $1 without \@$1 at line $.\n" unless defined $endw;
|
||||
die "\@$endw ended by \@end $1 at line $.\n" unless $1 eq $endw;
|
||||
|
||||
$endw = pop @endwstack;
|
||||
|
||||
if ($1 =~ /example$/) {
|
||||
$shift = "";
|
||||
next;
|
||||
} elsif ($1 =~ /^(if|ignore|menu)/) {
|
||||
$skipping = pop @skstack;
|
||||
next;
|
||||
} else {
|
||||
$_ = "\n=back\n";
|
||||
$ic = pop @icstack;
|
||||
}
|
||||
};
|
||||
|
||||
/^\@end ignore/ and $ignore = 0, next;
|
||||
next if $ignore;
|
||||
next if $skipping;
|
||||
|
||||
/^\@ignore/ and $ignore = 1, next;
|
||||
# Character entities. First the ones that can be replaced by raw text
|
||||
# or discarded outright:
|
||||
s/\@copyright\{\}/(c)/g;
|
||||
s/\@dots\{\}/.../g;
|
||||
s/\@enddots\{\}/..../g;
|
||||
s/\@([.!? ])/$1/g;
|
||||
s/\@[:-]//g;
|
||||
s/\@bullet(?:\{\})?/*/g;
|
||||
s/\@TeX\{\}/TeX/g;
|
||||
s/\@pounds\{\}/\#/g;
|
||||
s/\@minus(?:\{\})?/-/g;
|
||||
|
||||
# Now the ones that have to be replaced by special escapes
|
||||
# (which will be turned back into text by unmunge())
|
||||
s/&/&/g;
|
||||
s/\@\{/{/g;
|
||||
s/\@\}/}/g;
|
||||
s/\@\@/&at;/g;
|
||||
# POD doesn't interpret E<> inside a verbatim block.
|
||||
if ($shift eq "") {
|
||||
s/</</g;
|
||||
s/>/>/g;
|
||||
} else {
|
||||
s/</</g;
|
||||
s/>/>/g;
|
||||
}
|
||||
|
||||
# Single line command handlers.
|
||||
/^\@set\s+([a-zA-Z0-9_-]+)\s*(.*)$/ and $defs{$1} = $2, next;
|
||||
/^\@clear\s+([a-zA-Z0-9_-]+)/ and delete $defs{$1}, next;
|
||||
|
||||
/^\@section\s+(.+)$/ and $_ = "\n=head2 $1\n";
|
||||
/^\@subsection\s+(.+)$/ and $_ = "\n=head3 $1\n";
|
||||
|
||||
# Block command handlers:
|
||||
/^\@ifset\s+([a-zA-Z0-9_-]+)/ and do {
|
||||
push @endwstack, $endw;
|
||||
push @skstack, $skipping;
|
||||
$endw = "ifset";
|
||||
$skipping = 1 unless exists $defs{$1};
|
||||
next;
|
||||
};
|
||||
|
||||
/^\@ifclear\s+([a-zA-Z0-9_-]+)/ and do {
|
||||
push @endwstack, $endw;
|
||||
push @skstack, $skipping;
|
||||
$endw = "ifset";
|
||||
$endw = "ifclear";
|
||||
$skipping = 1 if exists $defs{$1};
|
||||
next;
|
||||
};
|
||||
|
||||
/^\@itemize (\@[a-z]+)/ and do {
|
||||
/^\@(ignore|menu)\b/ and do {
|
||||
push @endwstack, $endw;
|
||||
push @skstack, $skipping;
|
||||
$endw = $1;
|
||||
$skipping = 1;
|
||||
next;
|
||||
};
|
||||
|
||||
/^\@itemize\s+(\@[a-z]+|\*|-)/ and do {
|
||||
push @endwstack, $endw;
|
||||
push @icstack, $ic;
|
||||
$ic = $1;
|
||||
$ic =~ s/\@bullet/*/;
|
||||
$ic =~ s/\@minus/-/;
|
||||
$_ = "\n=over 4\n";
|
||||
$endw = "itemize";
|
||||
};
|
||||
|
||||
/^\@enumerate\s+([A-Z0-9]+)/ and do {
|
||||
/^\@enumerate(?:\s+([A-Z0-9]+))?/ and do {
|
||||
push @endwstack, $endw;
|
||||
push @icstack, $ic;
|
||||
$ic = $1 . ".";
|
||||
if (defined $1) {
|
||||
$ic = $1 . ".";
|
||||
} else {
|
||||
$ic = "1.";
|
||||
}
|
||||
$_ = "\n=over 4\n";
|
||||
$endw = "enumerate";
|
||||
};
|
||||
|
|
@ -169,7 +182,7 @@ while(<STDIN>)
|
|||
$ic = $1;
|
||||
$ic =~ s/\@(?:samp|strong|key)/B/;
|
||||
$ic =~ s/\@(?:code|kbd)/C/;
|
||||
$ic =~ s/\@(?:dfn|var|emph|cite)/I/;
|
||||
$ic =~ s/\@(?:dfn|var|emph|cite|i)/I/;
|
||||
$ic =~ s/\@(?:file)/F/;
|
||||
$_ = "\n=over 4\n";
|
||||
$endw = "table";
|
||||
|
|
@ -183,45 +196,30 @@ while(<STDIN>)
|
|||
};
|
||||
|
||||
/^\@itemx?\s*(.+)?$/ and do {
|
||||
if(defined $1)
|
||||
{
|
||||
$_ = "=item $ic\<$1\>\n";
|
||||
}
|
||||
else
|
||||
{
|
||||
$_ = "=item $ic\n";
|
||||
if (defined $1) {
|
||||
# Entity escapes prevent munging by the <> processing below.
|
||||
$_ = "\n=item $ic\<$1\>\n";
|
||||
} else {
|
||||
$_ = "\n=item $ic\n";
|
||||
$ic =~ y/A-Ya-y1-8/B-Zb-z2-9/;
|
||||
}
|
||||
};
|
||||
|
||||
/^\@section\s+(.+)$/ and do {
|
||||
$_ = "\n=head2 $1\n";
|
||||
};
|
||||
|
||||
# POD doesn't interpret E<> inside a verbatim block.
|
||||
if ($shift eq "") {
|
||||
s/</</g;
|
||||
s/>/>/g;
|
||||
} else {
|
||||
s/</</g;
|
||||
s/>/>/g;
|
||||
}
|
||||
s/\@\{/{/g;
|
||||
s/\@\}/}/g;
|
||||
$section .= $shift.$_."\n";
|
||||
}
|
||||
|
||||
die "No filename or title\n" unless defined $fn && defined $tl;
|
||||
|
||||
$sects{NAME} = "$fn \- $tl\n";
|
||||
$sects{FOOTNOTES} .= "=back\n" if exists $sects{FOOTNOTES};
|
||||
|
||||
for $sect (qw(NAME SYNOPSIS DESCRIPTION OPTIONS ENVIRONMENT FILES
|
||||
BUGS NOTES SEEALSO AUTHOR COPYRIGHT))
|
||||
{
|
||||
if(exists $sects{$sect})
|
||||
{
|
||||
BUGS NOTES FOOTNOTES SEEALSO AUTHOR COPYRIGHT)) {
|
||||
if(exists $sects{$sect}) {
|
||||
$head = $sect;
|
||||
$head =~ s/SEEALSO/SEE ALSO/;
|
||||
print "=head1 $head\n\n";
|
||||
print $sects{$sect};
|
||||
print scalar unmunge ($sects{$sect});
|
||||
print "\n";
|
||||
}
|
||||
}
|
||||
|
|
@ -230,3 +228,86 @@ sub usage
|
|||
{
|
||||
die "usage: $0 [-D toggle...] [infile [outfile]]\n";
|
||||
}
|
||||
|
||||
sub postprocess
|
||||
{
|
||||
local $_ = $_[0];
|
||||
|
||||
# @value{foo} is replaced by whatever 'foo' is defined as.
|
||||
s/\@value\{([a-zA-Z0-9_-]+)\}/$defs{$1}/g;
|
||||
|
||||
# Formatting commands.
|
||||
s/\@(?:dfn|var|emph|cite|i)\{([^\}]*)\}/I<$1>/g;
|
||||
s/\@(?:code|kbd)\{([^\}]*)\}/C<$1>/g;
|
||||
s/\@(?:samp|strong|key|b)\{([^\}]*)\}/B<$1>/g;
|
||||
s/\@sc\{([^\}]*)\}/\U$1/g;
|
||||
s/\@file\{([^\}]*)\}/F<$1>/g;
|
||||
s/\@w\{([^\}]*)\}/S<$1>/g;
|
||||
s/\@(?:dmn|math)\{([^\}]*)\}/$1/g;
|
||||
|
||||
# Cross references are thrown away, as are @noindent and @refill.
|
||||
# (@noindent is impossible in .pod, and @refill is unnecessary.)
|
||||
# @* is also impossible in .pod; we discard it and any newline that
|
||||
# follows it.
|
||||
|
||||
s/\@xref\{(?:[^\}]*)\}[^.]*.//g;
|
||||
s/\s+\(\@pxref\{(?:[^\}]*)\}\)//g;
|
||||
s/;\s+\@pxref\{(?:[^\}]*)\}//g;
|
||||
s/\@noindent\s*//g;
|
||||
s/\@refill//g;
|
||||
s/\@\*\s*\n?//g;
|
||||
|
||||
# @uref can take one, two, or three arguments, with different
|
||||
# semantics each time. @url and @email are just like @uref with
|
||||
# one argument, for our purposes.
|
||||
s/\@(?:uref|url|email)\{([^\},]*)\}/<C<$1>>/g;
|
||||
s/\@uref\{([^\},]*),([^\},]*)\}/$2 (C<$1>)/g;
|
||||
s/\@uref\{([^\},]*),([^\},]*),([^\},]*)\}/$3/g;
|
||||
|
||||
# Turn B<blah I<blah> blah> into B<blah> I<blah> B<blah> to
|
||||
# match Texinfo semantics of @emph inside @samp.
|
||||
s/</</g;
|
||||
s/>/>/g;
|
||||
1 while (s/B<([^<>]*)I<([^>]+)>/B<$1>I<$2>B</g);
|
||||
1 while (s/I<([^<>]*)B<([^>]+)>/I<$1>B<$2>I</g);
|
||||
s/[BI]<>//g;
|
||||
s/([BI])<(\s+)([^>]+)>/$2$1<$3>/g;
|
||||
s/([BI])<([^>]+?)(\s+)>/$1<$2>$3/g;
|
||||
|
||||
# Extract footnotes. This has to be done after all other
|
||||
# processing because otherwise the regexp will choke on formatting
|
||||
# inside @footnote.
|
||||
while (/\@footnote/g) {
|
||||
s/\@footnote\{([^\}]+)\}/[$fnno]/;
|
||||
add_footnote($1, $fnno);
|
||||
$fnno++;
|
||||
}
|
||||
|
||||
return $_;
|
||||
}
|
||||
|
||||
sub unmunge
|
||||
{
|
||||
# Replace escaped symbols with their equivalents.
|
||||
local $_ = $_[0];
|
||||
|
||||
s/</E<lt>/g;
|
||||
s/>/E<gt>/g;
|
||||
s/{/\{/g;
|
||||
s/}/\}/g;
|
||||
s/&at;/\@/g;
|
||||
s/&/&/g;
|
||||
return $_;
|
||||
}
|
||||
|
||||
sub add_footnote
|
||||
{
|
||||
unless (exists $sects{FOOTNOTES}) {
|
||||
$sects{FOOTNOTES} = "\n=over 4\n\n";
|
||||
}
|
||||
|
||||
$sects{FOOTNOTES} .= "=item $fnno.\n\n"; $fnno++;
|
||||
$sects{FOOTNOTES} .= $_[0];
|
||||
$sects{FOOTNOTES} .= "\n\n";
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue