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#!/usr/bin/perl --
# Copyright (C) 1993-1995 Ian Jackson.
# This file 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.
# It 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 GNU Emacs; see the file COPYING. If not, write to
# the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
# Boston, MA 02111-1307, USA.
# (Note: I do not consider works produced using these BFNN processing
# tools to be derivative works of the tools, so they are NOT covered
# by the GPL. However, I would appreciate it if you credited me if
# appropriate in any documents you format using BFNN.)
@outputs=('ascii','info','html');
while ($ARGV[0] =~ m/^\-/) {
$_= shift(@ARGV);
if (m/^-only/) {
@outputs= (shift(@ARGV));
} else {
warn "unknown option `$_' ignored";
}
}
$prefix= $ARGV[0];
$prefix= 'stdin' unless length($prefix);
$prefix =~ s/\.bfnn$//;
if (open(O
,"$prefix.xrefdb")) {
@xrefdb= <O>;
close(O
);
} else {
warn "no $prefix.xrefdb ($!)";
}
$section= -1;
for $thisxr (@xrefdb) {
$_= $thisxr;
chop;
if (m/^Q (\w+) ((\d+)\.(\d+)) (.*)$/) {
$qrefn{$1}= $2;
$qreft{$1}= $5;
$qn2ref{$3,$4}= $1;
$maxsection= $3;
$maxquestion[$3]= $4;
} elsif (m/^S (\d+) /) {
$maxsection= $1;
$sn2title{$1}=$';
}
}
open(U
,">$prefix.xrefdb-new");
for $x (@outputs) { require("m-$x.pl"); }
&call('init');
while (<>) {
chop;
next if m/^\\comment\b/;
if (!m/\S/) {
&call('endpara');
next;
}
if (s/^\
\section +//) {
$line= $_;
$section++; $question=0;
print U
"S $section $line\n";
$|=1; print "S$section",' 'x10
,"\r"; $|=0;
&call('endpara');
&call('startmajorheading',"$section",
"Section $section",
$section<$maxsection ? "Section ".($section+1) : '',
$section>1 ? 'Section '.($section-1) : 'Top');
&text($line);
&call('endmajorheading');
if ($section) {
&call('endpara');
&call('startindex');
for $thisxr (@xrefdb) {
$_= $thisxr;
chop;
if (m/^Q (\w+) (\d+)\.(\d+) (.*)$/) {
$ref= $1; $num1= $2; $num2= $3; $text= $4;
next unless $num1 == $section;
&call('startindexitem',$ref,"Q$num1.$num2","Question $num1.$num2");
&text($text);
&call('endindexitem');
}
}
&call('endindex');
}
} elsif (s/^\
\question \d{2}[a
-z
]{3}((:\w+)?) +//) {
$line= $_;
$question++;
$qrefstring= $1;
$qrefstring= "q_${section}_$question" unless $qrefstring =~ s/^://;
print U
"Q $qrefstring $section.$question $line\n";
$|=1; print "Q$section.$question",' 'x10
,"\r"; $|=0;
&call('endpara');
&call('startminorheading',$qrefstring,
"Question $section.$question",
$question < $maxquestion[$section] ? "Question $section.".($question+1) :
$section < $maxsection ? "Question ".($section+1).".1" : '',
$question > 1 ? "Question $section.".($question-1) :
$section > 1 ? "Question ".($section-1).'.'.($maxquestion[$section-1]) :
'Top',
"Section $section");
&text("Question $section.$question. $line");
&call('endminorheading');
} elsif (s/^\
\only +//) {
@saveoutputs= @outputs;
@outputs=();
for $x (split(/\s+/,$_)) {
push(@outputs,$x) if grep($x eq $_, @saveoutputs);
}
} elsif (s/^\
\endonly$//) {
@outputs= @saveoutputs;
} elsif (s/^\
\copyto +//) {
$fh= $';
while(<>) {
last if m/^\\endcopy$/;
while (s/^([^\
`]*)\`//) {
print $fh $1;
m/([^\\])\`/ || warn "`$_'";
$_= $';
$cmd= $`.$1;
$it= `$cmd`; chop $it;
print $fh $it;
}
print $fh $_;
}
} elsif (m/\\index$/) {
&call('startindex');
for $thisxr (@xrefdb) {
$_= $thisxr;
chop;
if (m/^Q (\w+) (\d+\.\d+) (.*)$/) {
$ref= $1; $num= $2; $text= $3;
&call('startindexitem',$ref,"Q$num","Question $num");
&text($text);
&call('endindexitem');
} elsif (m/^S (\d+) (.*)$/) {
$num= $1; $text= $2;
next unless $num;
&call('startindexmainitem',"s_$num",
"Section $num.","Section $num");
&text($text);
&call('endindexitem');
} else {
warn $_;
}
}
&call('endindex');
} elsif (m/^\\call-(\w+) +(\w+)\s*(.*)$/) {
$fn= $1.'_'.$2;
eval { &$fn($3); };
warn $@ if length($@);
} elsif (m/^\\call +(\w+)\s*(.*)$/) {
eval { &call($1,$2); };
warn $@ if length($@);
} elsif (s/^\
\set +(\w+)\
s*//) {
$svalue= $'; $svari= $1;
eval("\$user_$svari=\$svalue"); $@ && warn "setting $svalue failed: $@\n";
} elsif (m/^\\verbatim$/) {
&call('startverbatim');
while (<>) {
chop;
last if m/^\\endverbatim$/;
&call('verbatim',$_);
}
&call('endverbatim');
} else {
s/\.$/\. /;
&text($_." ");
}
}
print ' 'x25
,"\r";
&call('finish');
rename("$prefix.xrefdb-new","$prefix.xrefdb") || warn "rename xrefdb: $!";
exit 0;
sub text
{
local($in,$rhs,$word,$refn,$reft,$fn,$style);
$in= "$holdover$_[0]";
$holdover= '';
while ($in =~ m/\\/) {
#print STDERR ">$`##$'\n";
$rhs=$';
&call('text',$`);
$_= $rhs;
if (m/^\w+ $/) {
$holdover= "\\$&";
$in= '';
} elsif (s/^fn\
s+([^\
s\\
]*\w)//) {
$in= $_;
$word= $1;
&call('courier');
&call('text',$word);
&call('endcourier');
} elsif (s/^tab\
s+(\d+)\
s+//) {
$in= $_; &call('tab',$1);
} elsif (s/^nl\
s+//) {
$in= $_; &call('newline');
} elsif (s/^qref\
s+(\w+)//) {
$refn= $qrefn{$1};
$reft= $qreft{$1};
if (!length($refn)) {
warn "unknown question `$1'";
}
$in= "$`\\pageref:$1:$refn:$reft\\endpageref.$_";
} elsif (s/^pageref
:(\w+):([^:\n]+)://) {
$in= $_;
&call('pageref',$1,$2);
} elsif (s/^endpageref\
.//) {
$in= $_; &call('endpageref');
} elsif (s/^(\w+)\
{//) {
$in= $_; $fn= $1;
eval { &call("$fn"); };
if (length($@)) { warn $@; $fn= 'x'; }
push(@styles,$fn);
} elsif (s/^\
}//) {
$in= $_;
$fn= pop(@styles);
if ($fn ne 'x') { &call("end$fn"); }
} elsif (s/^\\
//) {
$in= $_;
&call('text',"\\");
} elsif (s,^(\w+)\
s+([-A
-Za
-z0
-9.\
@:/]*\w),,) {
#print STDERR "**$&**$_\n";
$in= $_;
$style=$1; $word= $2;
&call($style);
&call('text',$word);
&call("end$style");
} else {
warn "unknown control `\\$_'";
$in= $_;
}
}
&call('text',$in);
}
sub call
{
local ($fnbase, @callargs) = @_;
local ($coutput);
for $coutput (@outputs) {
if ($fnbase eq 'text' && eval("\@${coutput}_cmds")) {
#print STDERR "special handling text (@callargs) for $coutput\n";
$evstrg= "\$${coutput}_args[\$#${coutput}_args].=\"\@callargs\"";
eval($evstrg);
length($@) && warn "call adding for $coutput (($evstrg)): $@";
} else {
$fntc= $coutput.'_'.$fnbase;
&$fntc(@callargs);
}
}
}
sub recurse
{
local (@outputs) = $coutput;
local ($holdover);
&text($_[0]);
}
sub arg
{
#print STDERR "arg($_[0]) from $coutput\n";
$cmd= $_[0];
eval("push(\@${coutput}_cmds,\$cmd); push(\@${coutput}_args,'')");
length($@) && warn "arg setting up for $coutput: $@";
}
sub endarg
{
#print STDERR "endarg($_[0]) from $coutput\n";
$evstrg= "\$${coutput}_cmd= \$cmd= pop(\@${coutput}_cmds); ".
"\$${coutput}_arg= \$arg= pop(\@${coutput}_args); ";
eval($evstrg);
length($@) && warn "endarg extracting for $coutput (($evstrg)): $@";
#print STDERR ">call $coutput $cmd $arg< (($evstrg))\n";
$evstrg= "&${coutput}_do_${cmd}(\$arg)";
eval($evstrg);
length($@) && warn "endarg running ${coutput}_do_${cmd} (($evstrg)): $@";
}