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bird/tools/linuxdoc-tools/LinuxDocTools/FixRef.pm

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#
# FixRef.pm
#
# $Id: FixRef.pm,v 1.1.1.1 2001/05/24 15:57:41 sano Exp $
#
# Start conversion from parsed linuxdoc-sgml to html.
# - Identify references and file count
#
# Rules based on fixref.l
#
package LinuxDocTools::FixRef;
# Externally visible variables
$fixref = {};
# Initialize: set splitlevel before using rules
# Usage: &{$fixref->{init}}(<split level>);
# 0 - super page mode
# 1 - big page mode
# 2 - small page mode
$fixref->{init} = sub {
$splitlevel = shift;
};
# Outputs: Read after using rules
$fixref->{filenum} = 0; # Count of files we will create
$fixref->{lrec} = {}; # label -> filenum
# Package variables
$chapter_mode = 0; # <report> vs. <article>
$splitlevel = 0; # See $fixref->{init} above;
# Automatically reduced by 1 for chapter mode
# Finalize parsing
$fixref->{finish} = sub { }; # Do nothing when we're done
# Ruleset
$fixref->{rules} = {}; # Individual parsing rules
$fixref->{defaultrule} = sub { }; # If line does not match any rules
# Set the rules
# <@@ssect> - split file if necessary
$fixref->{rules}->{'^<@@ssect>.*$'} = sub { &splitfile(2); };
# <@@sect> - split file if necessary
$fixref->{rules}->{'^<@@sect>.*$'} = sub { &splitfile(1); };
# <@@chapt> - set chapter mode; reduce splitlevel if needed; split file
$fixref->{rules}->{'^<@@chapt>.*$'} = sub {
$splitlevel-- if (!$chapter_mode);
$chapter_mode = 1; &splitfile(0);
};
# <@@label> - Identify label location
$fixref->{rules}->{'^<@@label>(.*)$'} = sub {
$fixref->{lrec}->{$1} = $fixref->{filenum};
};
#==============================
# Split the file (-split option; level in parentheses):
# non-chapter mode: -0 -> don't split
# -1 -> split at sect (1)
# -2 -> split at sect (1) and ssect (2)
# chapter mode: -0 -> split at chapt (0)
# -1 -> split at chapt (0)
# -2 -> split at chapt (0) and sect (1)
sub splitfile
{
my ($level) = @_;
if (($level == 0) || ($splitlevel >= $level)) {
$fixref->{filenum}++;
}
}
1;