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schoenebeck |
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#!/usr/bin/perl -w |
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# Updates grammer in lscp.xml |
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# |
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# Updates the "Command Syntax" section of Documentation/lscp.xml with current |
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# LSCP grammar definition from network/lscp.y which is the yacc input file |
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# used to automatically generate LinuxSampler's LSCP parser C++ source file |
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# (network/lscpparser.cpp). |
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# |
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# Usage: update_grammar.pl [-v] |
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# |
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# -v verbose output |
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my $YACC_FILE = "../src/network/lscp.y"; |
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my $XML2RFC_FILE = "../Documentation/lscp.xml"; |
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my $ANCHOR_TOKEN_BEGIN = "GRAMMAR_BNF_BEGIN"; |
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my $ANCHOR_TOKEN_END = "GRAMMAR_BNF_END"; |
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my $verbose = 0; |
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if (defined($ARGV[0]) and $ARGV[0] eq "-v") { |
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$verbose = 1; |
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} |
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open(IN, $YACC_FILE) || die "Can't open yacc input file for creating xml2rfc file."; |
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open(OUT, $XML2RFC_FILE) || die "Can't read xml2rfc file."; |
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my @yacc_in = <IN>; |
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my $in_marker_begin = -1; |
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my $in_marker_end = -1; |
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my $i = 0; |
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# scan the yacc input file for the marker lines |
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if ($verbose) { print "Scanning file \"${YACC_FILE}\" ...\n"; } |
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foreach $line (@yacc_in) { |
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if ($line =~ /$ANCHOR_TOKEN_BEGIN/o) { $in_marker_begin = $i; } |
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elsif ($line =~ /$ANCHOR_TOKEN_END/o) { $in_marker_end = $i; } |
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$i++; |
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} |
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if ($in_marker_begin < 0) { |
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die "Did not find ${ANCHOR_TOKEN_BEGIN} token in ${YACC_FILE}, exiting!"; |
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} |
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if ($in_marker_end < 0) { |
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die "Did not find ${ANCHOR_TOKEN_END} token in ${YACC_FILE}, exiting!"; |
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} |
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if ($in_marker_end <= $in_marker_begin) { |
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die "Marker line ${ANCHOR_TOKEN_END} appears before marker line ${ANCHOR_TOKEN_BEGIN}, exiting!"; |
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} |
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if ($verbose) { print "Ok, found ${ANCHOR_TOKEN_BEGIN} in line ${in_marker_begin} and ${ANCHOR_TOKEN_END} in line ${in_marker_end}.\n"; } |
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# delete everything except the grammar lines |
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splice(@yacc_in, $in_marker_end, $#yacc_in - $in_marker_end); |
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splice(@yacc_in, 0, $in_marker_begin + 1); |
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# do the XML transformation |
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$i = 0; |
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foreach $line (@yacc_in) { |
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$_ = $line; |
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# remove C++ code |
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s/\{\p{IsASCII}*\}//g; |
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s/\/\/\p{IsASCII}*$/\n/g; |
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s/\{//g; |
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s/\}//g; |
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# place XML tags |
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s!^(\w+)\s*:\s*(\p{IsASCII}*)!<t>$1 =\n\t<list>\n\t\t<t>$2!; |
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s!^\s+\|\s*(\p{IsASCII}*)!\t\t</t>\n\t\t<t>/ $1!; |
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s!^\s*;(\p{IsASCII}*)!\t\t</t>\n\t</list>\n</t>!; |
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#s/:/<list>/g; |
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$yacc_in[$i] = $_; |
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$i++; |
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} |
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my @xml_in = <OUT>; |
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my $out_marker_begin = -1; |
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my $out_marker_end = -1; |
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$i = 0; |
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# scan the xml2rfc file for the marker lines |
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if ($verbose) { print "Scanning file \"${XML2RFC_FILE}\" ...\n"; } |
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foreach $line (@xml_in) { |
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if ($line =~ /$ANCHOR_TOKEN_BEGIN/o) { $out_marker_begin = $i; } |
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elsif ($line =~ /$ANCHOR_TOKEN_END/o) { $out_marker_end = $i; } |
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$i++; |
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} |
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if ($out_marker_begin < 0) { |
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die "Did not find ${ANCHOR_TOKEN_BEGIN} token in ${XML2RFC_FILE}, exiting!"; |
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} |
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if ($out_marker_end < 0) { |
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die "Did not find ${ANCHOR_TOKEN_END} token in ${XML2RFC_FILE}, exiting!"; |
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} |
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if ($out_marker_end <= $out_marker_begin) { |
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die "Marker line ${ANCHOR_TOKEN_END} appears before marker line ${ANCHOR_TOKEN_BEGIN}, exiting!"; |
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} |
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if ($verbose) { print "Ok, found ${ANCHOR_TOKEN_BEGIN} in line ${out_marker_begin} and ${ANCHOR_TOKEN_END} in line ${out_marker_end}.\n"; } |
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close(OUT); # we reopen in write (clobber) mode |
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# finally replace the area in the output xml file with the new grammar |
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splice(@xml_in, $out_marker_begin + 1, $out_marker_end - $out_marker_begin - 1, @yacc_in); |
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open(OUT, "+>", $XML2RFC_FILE) || die "Can't open xml2rfc file for output"; |
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print OUT @xml_in; |
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close(OUT); |
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close(IN); |
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if ($verbose) { print "Done.\n"; } |
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exit(0); |
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