buildtokenrec

mgcp协议源代码。支持多种编码：g711

#!/usr/bin/perl

# The license applies to all software incorporated in the "Vovida
# Open Communication Application Library" except for those portions
# incorporating third party software specifically identified as being
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# The Vovida Software License, Version 1.0 
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# This software consists of voluntary contributions made by Vovida
# Networks, Inc. and many individuals on behalf of Vovida Networks,
# Inc.  For more information on Vovida Networks, Inc., please see
# <http://www.vovida.org/>.
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require "getopts.pl";
&Getopts("o:");

if($opt_o) {
    $output_file = $opt_o;
} else {
    $output_file = "tokenGen";
}

open(OUTPUT_H, ">$output_file.h") or die "cannot open $ARGV[1] $!";
open(OUTPUT_CXX, ">$output_file.cxx") or die "cannot open $ARGV[1] $!";

$type{"Unknown"} = 1;
$type{"String"} = 1;
$type{"TableEnd"} = 1;


print OUTPUT_H "// this file is automatically generated!  do not edit\n\n";
print OUTPUT_CXX "// this file is automatically generated!  do not edit\n\n";
print OUTPUT_H <<END_INCLUDES
#include <map>
#include <string>
END_INCLUDES
  ;
print OUTPUT_CXX '#include "', "$output_file.h", '"', "\n";
print OUTPUT_CXX "\n";

$max_size = 256;

while(<>) {
    chomp;

    if(/^begin (\w+)/) {
	$struct_name = $1;
#	$output_last_header .= "extern struct TokenRecognizerTable recTable$struct_name;\n";
	$output_last_header .= "extern TokenRecognizer recognizer$struct_name;\n";

	print OUTPUT_CXX "struct TokenRecognizerTable recTable$struct_name", "[$max_size] =\n";
	print OUTPUT_CXX "{\n";
    } elsif(/^end/) {
	print OUTPUT_CXX "    { \"\", MgcpTokenTypeTableEnd }\n";
	print OUTPUT_CXX "};\n";

	print OUTPUT_CXX "TokenRecognizer recognizer$struct_name (recTable$struct_name);\n";

    } elsif(s/^token\s+//) {
    
	($name, $string) = split(/\s+/);

	if(!$type{$name}) {
	    $type{$name} = $string;
	} elsif($type{$name} ne $string) {
	    print STDERR "duplicate $name in token table with different string.\n";
	    exit -1;
	}

	print OUTPUT_CXX "    { \"$string\", MgcpTokenType$name },\n";
    }
}

print OUTPUT_H "enum MgcpTokenType\n";
print OUTPUT_H "{\n";

foreach(sort keys %type) {
    print OUTPUT_H "     MgcpTokenType$_,\n";
}
print OUTPUT_H "};\n";

print OUTPUT_H "\n";

print OUTPUT_H <<ENDL
struct TokenRecognizerTable
{
    char* string;
    MgcpTokenType type;
};

class TokenRecognizer
{
public:
    TokenRecognizer(struct TokenRecognizerTable* rootTable) {
	int i = 0;
	while(rootTable[i].type != MgcpTokenTypeTableEnd)
	{
	    myMap[rootTable[i].string] = rootTable[i].type;
	    i++;
	}
    };

    MgcpTokenType matchToken(const string& s) {
	return myMap[s];
    };

private:
    map<string, MgcpTokenType> myMap;
};

ENDL
  ;


print OUTPUT_H $output_last_header;