common/arglex.h

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//
//      aegis - project change supervisor
//      Copyright (C) 1991-1993, 1995, 1999, 2001-2006, 2008 Peter Miller
//
//      This program is free software; you can redistribute it and/or modify
//      it under the terms of the GNU General Public License as published by
//      the Free Software Foundation; either version 3 of the License, or
//      (at your option) any later version.
//
//      This program is distributed in the hope that it will be useful,
//      but WITHOUT ANY WARRANTY; without even the implied warranty of
//      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//      GNU General Public License for more details.
//
//      You should have received a copy of the GNU General Public License
//      along with this program. If not, see
//      <http://www.gnu.org/licenses/>.
//

#ifndef ARGLEX_H
#define ARGLEX_H

#include <common/main.h>

#define ARGLEX_END_MARKER { (const char *)0, 0, }

enum
{
    ARGLEX_PREFETCH_FAIL = -99,
    arglex_token_eoln = -20,
    arglex_token_help,
    arglex_token_number,
    arglex_token_number_incomplete,
    arglex_token_option,
    arglex_token_option_incomplete,
    arglex_token_page_length,
    arglex_token_page_width,
    arglex_token_stdio,
    arglex_token_string,
    arglex_token_string_incomplete,
    arglex_token_trace,
    arglex_token_version
};

struct arglex_table_ty
{
    const char      *t_name;
    int             t_token;
};

struct arglex_value_ty
{
    const char      *alv_string;
    long            alv_number;
};

extern int      arglex_token;
extern arglex_value_ty arglex_value;

void arglex_init(int, char **, arglex_table_ty *);
int arglex(void);
int arglex_prefetch(int *, int);

bool arglex_compare(const char *formal, const char *actual,
    const char **partial);

const char *arglex_token_name(int);

arglex_table_ty *arglex_table_catenate(arglex_table_ty *, arglex_table_ty *);


struct arglex_dispatch_ty
{
    int             token;
    void            (*func)(void);
    int             priority;
};

void arglex_dispatch(arglex_dispatch_ty *table, int table_len,
    void (*usage)(void));

void arglex_synthetic(int, char **, int);
void arglex_retable(arglex_table_ty *);
int arglex_get_string(void);

#endif // ARGLEX_H

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