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/*

 * Copyright (c) 2002-2005 The TenDRA Project <http://www.tendra.org/>.

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions are met:

 *

 * 1. Redistributions of source code must retain the above copyright notice,

 *    this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright notice,

 *    this list of conditions and the following disclaimer in the documentation

 *    and/or other materials provided with the distribution.

 * 3. Neither the name of The TenDRA Project nor the names of its contributors

 *    may be used to endorse or promote products derived from this software

 *    without specific, prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS

 * IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,

 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

 * EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;

 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,

 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR

 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF

 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 *

 * $Id$

 */

/*

    		 Crown Copyright (c) 1997

    This TenDRA(r) Computer Program is subject to Copyright

    owned by the United Kingdom Secretary of State for Defence

    acting through the Defence Evaluation and Research Agency

    (DERA).  It is made available to Recipients with a

    royalty-free licence for its use, reproduction, transfer

    to other parties and amendment for any purpose not excluding

    product development provided that any such use et cetera

    shall be deemed to be acceptance of the following conditions:-

        (1) Its Recipients shall ensure that this Notice is

        reproduced upon any copies or amended versions of it;

        (2) Any amended version of it shall be clearly marked to

        show both the nature of and the organisation responsible

        for the relevant amendment or amendments;

        (3) Its onward transfer from a recipient to another

        party shall be deemed to be that party's acceptance of

        these conditions;

        (4) DERA gives no warranty or assurance as to its

        quality or suitability for any purpose and DERA accepts

        no liability whatsoever in relation to any use to which

        it may be put.

*/

#include "config.h"

#include "release.h"

#include "types.h"

#include "read_types.h"

#include "analyser.h"

#include "check.h"

#include "de_types.h"

#include "de_capsule.h"

#include "enc_cap.h"

#include "eval.h"

#include "file.h"

#include "help.h"

#include "node.h"

#include "read_cap.h"

#include "shape.h"

#include "tdf.h"

#include "table.h"

#include "utility.h"

#include "write.h"

/*

    PROGRAM VERSION

    The program name and version number are given.

*/

char *progname = "tnc";

static char *version = "Version: 1.9";

/*

    PROCESS AN OUTPUT OPTION

    The show option corresponding to arg is set to t.

*/

static boolean

output_option(char *arg, boolean t)

{

    boolean *p = null;

    if (streq(arg, "tokdecs")) {

	p = &show_tokdecs;

    } else if (streq(arg, "tokdefs")) {

	p = &show_tokdefs;

    } else if (streq(arg, "aldecs")) {

	p = &show_aldecs;

    } else if (streq(arg, "aldefs")) {

	p = &show_aldefs;

    } else if (streq(arg, "tagdecs")) {

	p = &show_tagdecs;

    } else if (streq(arg, "tagdefs")) {

	p = &show_tagdefs;

    }

    if (p == null) return(0);

    if (t) {

	show_tokdecs = 0;

	show_tokdefs = 0;

	show_aldefs = 0;

	show_tagdecs = 0;

	show_tagdefs = 0;

    }

    *p = t;

    return(1);

}

/*

    MAIN ROUTINE

    This is the main routine.  It processes the command line arguments

    and calls the appropriate input and output routines.

*/

int

main(int argc, char **argv)

{

    int a;

    int status = 0;

    boolean expand = 0;

    boolean evaluate = 0;

    boolean lib_input = 0;

    boolean output_next = 0;

    void(*input_fn)(void);

    void(*output_fn)(void);

    /* Default action : read text, encode TDF capsule */

    input_fn = read_capsule;

    output_fn = enc_capsule;

    text_input = 1;

    text_output = 0;

    /* Initialize internal tables */

    output = stdout;

    init_tables();

    init_constructs();

    /* Scan arguments */

    for (a = 1; a < argc; a++) {

	char *arg = argv[a];

	if (output_next) {

	    open_output(arg);

	    output_next = 0;

	} else if (*arg == '-') {

	    boolean known = 0;

	    switch (arg[1]) {

		case 'h': {

		    /* Help option */

		    if (streq(arg, "-help")) {

			if (status)warning("Too many arguments");

			a++;

			if (a == argc) {

			    help("all");

			} else {

			    while (a < argc) {

				help(argv[a]);

				a++;

			    }

			}

			exit(exit_status);

		    }

		    break;

		}

		case 'd': {

		    if (arg[2] == 0 || streq(arg, "-decode")) {

			/* Decode mode */

			input_fn = de_capsule;

			text_input = 0;

			known = 1;

		    }

		    break;

		}

		case 'e': {

		    if (arg[2] == 0 || streq(arg, "-encode")) {

			/* Encode mode */

			output_fn = enc_capsule;

			text_output = 0;

			known = 1;

		    } else if (streq(arg, "-eval")) {

			evaluate = 1;

			known = 1;

		    } else if (streq(arg, "-expand")) {

			expand = 1;

			known = 1;

		    }

		    break;

		}

		case 'r': {

		    if (arg[2] == 0 || streq(arg, "-read")) {

			/* Read mode */

			input_fn = read_capsule;

			text_input = 1;

			known = 1;

		    }

		    break;

		}

		case 'w': {

		    if (arg[2] == 0 || streq(arg, "-write")) {

			/* Write mode */

			output_fn = print_capsule;

			text_output = 1;

			known = 1;

		    }

		    break;

		}

		case 'p': {

		    if (arg[2] == 0 || streq(arg, "-print")) {

			/* Pretty printer mode */

			input_fn = de_capsule;

			output_fn = print_capsule;

			text_input = 0;

			text_output = 1;

			known = 1;

		    }

		    break;

		}

		case 't': {

		    if (arg[2] == 0 || streq(arg, "-tsimp")) {

			/* Expand token definitions */

			evaluate = 1;

			expand = 1;

			known = 1;

		    }

		    break;

		}

		case 'c': {

		    if (arg[2] == 0 || streq(arg, "-check")) {

			/* Switch on shape checking */

			init_shapes();

			do_check = 1;

			known = 1;

		    } else if (streq(arg, "-cv")) {

			init_shapes();

			do_check = 1;

			print_shapes = 1;

			known = 1;

		    }

		    break;

		}

		case 'l': {

		    if (arg[2] == 0 || streq(arg, "-lib")) {

			lib_input = 1;

			known = 1;

		    }

		    break;

		}

		case 'f': {

		    if (arg[2] == 0 || streq(arg, "-func")) {

			/* Check on form of input and output */

			func_input = 1;

			func_output = 1;

			known = 1;

		    } else if (streq(arg, "-func_out")) {

			func_output = 1;

			known = 1;

		    } else if (streq(arg, "-func_in")) {

			func_input = 1;

			known = 1;

		    }

		    break;

		}

		case 'n': {

		    if (strncmp(arg, "-no_", 4) == 0) {

			known = output_option(arg + 4, 0);

		    }

		    break;

		}

		case 'o': {

		    if (arg[2] == 0) {

			output_next = 1;

			known = 1;

		    } else if (strncmp(arg, "-only_", 6) == 0) {

			known = output_option(arg + 6, 1);

		    }

		    break;

		}

		case 'q': {

		    if (arg[2] == 0) {

			dont_check = 1;

			known = 1;

		    }

		    break;

		}

		case 'u': {

		    if (arg[2] == 0 || streq(arg, "-unsorted")) {

			order_names = 0;

			known = 1;

		    }

		    break;

		}

		case 'v': {

		    if (arg[2] == 0 || streq(arg, "-version")) {

			char *vn = version;

			char *rn = RELEASE;

			int v1 = VERSION_major;

			int v2 = VERSION_minor;

			IGNORE fprintf(stderr, "%s: %s", progname, vn);

			IGNORE fprintf(stderr, " (TDF %d.%d)", v1, v2);

			IGNORE fprintf(stderr, " (release %s)\n", rn);

			known = 1;

		    }

		    break;

		}

		case 'I': {

		    add_directory(arg + 2);

		    known = 1;

		    break;

		}

		case 'L': {

		    local_prefix = arg + 2;

		    known = 1;

		    break;

		}

		case 'V': {

		    if (arg[2] == 0) {

			verbose = 1;

			known = 1;

		    }

		    break;

		}

	    }

	    if (!known)warning("Unknown option, %s", arg);

	} else {

	    /* Initialize input and output files */

	    if (status == 0) {

		open_input(arg, 0);

	    } else if (status == 1) {

		open_output(arg);

	    } else {

		warning("Too many arguments");

	    }

	    status++;

	}

    }

    /* Check on library input */

    if (lib_input && input_fn == de_capsule)input_fn = de_library;

    /* Perform the appropriate actions */

    if (status == 0)fatal_error("Not enough arguments");

   (*input_fn)();

    if (exit_status == EXIT_SUCCESS || text_output) {

	if (expand)expand_all();

	if (evaluate)eval_all();

	sort_all();

	(*output_fn)();

    }

    return(exit_status);

}