mirror of https://gerrit.osmocom.org/asn1c
87 lines
1.6 KiB
Perl
87 lines
1.6 KiB
Perl
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#!/usr/bin/perl
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#
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# $Id$
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# $Author$
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#
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# Simple tool that fetches the ASN.1 specifications from the
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# given set of RFC files.
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#
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my $inasn = 0; # Are we inside ASN.1 grammar?
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my $found = 0;
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if(-t STDIN && $#ARGV == -1) {
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print STDERR "Rip ASN.1 specification from RFC file\n";
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print STDERR "Usage: $0 <rfc-file.txt> ...\n";
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print STDERR "Usage: <someprog> | $0\n";
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exit(1);
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}
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while(<>) {
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#
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# Strip RFC page delimiters.
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#
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next if /^[A-Z].*\[Page [0-9]+\]$/;
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next if /^ $/;
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next if /^RFC [0-9].*[0-9]+$/;
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if($inasn == 0) {
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#
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# The least correct way to find the start of ASN
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# definition.
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#
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if(/^[ \t]*END[ \t]*$/) {
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print STDERR
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"Missed an ASN.1 grammar before line ". $. ."?\n";
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exit(1);
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}
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my $rfcid = '';
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$rfcid = $1 . '-' if($ARGV =~ /([a-z0-9]+)/i);
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if(/^[ \t]+([A-Za-z0-9-]+).*DEFINITIONS.*::=/) {
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my $fname = $rfcid . $1 . ".asn1";
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open(O, "> $fname") or die "Can't open $fname";
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select(O);
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$inasn = 1;
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} elsif(/^[ \t]*([A-Za-z0-9-]+).*{.*iso/) {
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my $fname = $rfcid . $1 . ".asn1";
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my @a = ($_);
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my $i;
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for($i = 0; $i < 8; $i++) {
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$_ = <>;
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push(@a, $_);
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if(/DEFINITIONS/) {
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$_ = join('', @a);
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$inasn = 1;
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last;
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}
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}
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next unless $inasn;
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open(O, "> $fname") or die "Can't open $fname";
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select(O);
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} else {
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next;
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}
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$found++;
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print "\n";
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print "-- \n";
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print "-- Grammar found in $ARGV by $0 at " . $. . "\n";
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print "-- \n";
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print "\n";
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}
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print;
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if(/^[ \t]*END[ \t]*$/) {
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select(STDOUT);
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close(O);
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$inasn = 0;
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}
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}
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die "No ASN.1 specifications found\n" unless $found;
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