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/*
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 * Copyright (c) 2002-2005 The TenDRA Project <http://www.tendra.org/>.
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions are met:
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 *
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 * 1. Redistributions of source code must retain the above copyright notice,
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 *    this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright notice,
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 *    this list of conditions and the following disclaimer in the documentation
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 *    and/or other materials provided with the distribution.
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 * 3. Neither the name of The TenDRA Project nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific, prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS
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 * IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
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 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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 * EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 *
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 * $Id$
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 */
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/*
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    		 Crown Copyright (c) 1997
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    This TenDRA(r) Computer Program is subject to Copyright
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    owned by the United Kingdom Secretary of State for Defence
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    acting through the Defence Evaluation and Research Agency
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    (DERA).  It is made available to Recipients with a
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    royalty-free licence for its use, reproduction, transfer
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    to other parties and amendment for any purpose not excluding
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    product development provided that any such use et cetera
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    shall be deemed to be acceptance of the following conditions:-
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        (1) Its Recipients shall ensure that this Notice is
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        reproduced upon any copies or amended versions of it;
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        (2) Any amended version of it shall be clearly marked to
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        show both the nature of and the organisation responsible
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        for the relevant amendment or amendments;
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        (3) Its onward transfer from a recipient to another
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        party shall be deemed to be that party's acceptance of
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        these conditions;
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        (4) DERA gives no warranty or assurance as to its
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        quality or suitability for any purpose and DERA accepts
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        no liability whatsoever in relation to any use to which
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        it may be put.
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*/
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#include "config.h"
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#include "char.h"
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#include "error.h"
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#include "lex.h"
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#include "output.h"
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#include "syntax.h"
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/*
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    MAIN ROUTINE
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    This is the main routine.  It processes the command-line options,
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    reads the input file, and writes the output files.
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*/
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int
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main(int argc, char **argv)
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{
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    int a;
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    int key = 0;
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    int too_many = 0;
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    char *input = NULL;
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    char *output = NULL;
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    /* Process arguments */
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    set_progname(argv [0], "1.2");
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    for (a = 1; a < argc; a++) {
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	char *arg = argv [a];
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	if (arg [0] == '-' && arg [1]) {
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	    int known = 0;
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	    switch (arg [1]) {
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		case 'k': {
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		    if (arg [2])break;
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		    key = 1;
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		    known = 1;
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		    break;
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		}
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		case 'l': {
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		    sid_prefix = arg + 2;
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		    known = 1;
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		    break;
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		}
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		case 'v': {
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		    if (arg [2])break;
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		    report_version();
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		    known = 1;
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		    break;
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		}
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	    }
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	    if (!known) {
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		error(ERROR_WARNING, "Unknown option, '%s'", arg);
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	    }
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	} else {
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	    if (input == NULL) {
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		input = arg;
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	    } else if (output == NULL) {
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		output = arg;
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	    } else {
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		too_many = 1;
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	    }
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	}
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    }
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    /* Check arguments */
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    if (input == NULL)error(ERROR_FATAL, "Not enough arguments");
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    if (too_many)error(ERROR_WARNING, "Too many arguments");
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    /* Process input file */
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    process_file(input);
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    /* Generate output */
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    if (exit_status == EXIT_SUCCESS) {
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	if (white_space == NULL)white_space = make_string(" \t\n");
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	if (output == NULL || streq(output, "-")) {
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	    lex_output = stdout;
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	    output = NULL;
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	} else {
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	    lex_output = fopen(output, "w");
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	    if (lex_output == NULL) {
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		error(ERROR_FATAL, "Can't open output file, %s", output);
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	    }
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	}
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	if (key) {
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	    output_keyword();
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	} else {
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	    output_all();
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	}
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	if (output)fclose_v(lex_output);
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    } else {
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	error(ERROR_FATAL, "Terminating due to previous errors");
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    }
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    return(exit_status);
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}