//
//	aegis - project change supervisor
//	Copyright (C) 2002-2006, 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/>.
//

#include <common/error.h> // for assert
#include <aecomplete/shell.h>
#include <aecomplete/shell/bash.h>
#include <aecomplete/shell/zsh.h>
#include <libaegis/sub.h>


typedef shell_ty *(*funcptr)(void);

static funcptr table[] =
{
    shell_bash,
    shell_zsh,
};


shell_ty *
shell_find(void)
{
    funcptr         *tp;
    shell_ty        *sp;
    funcptr         func;

    for (tp = table; tp < ENDOF(table); ++tp)
    {
	func = *tp;
	sp = func();
	if (shell_test(sp))
	    return sp;
	shell_delete(sp);
    }
    fatal_intl(0, i18n("unknown shell"));
    // NOTREACHED
    return 0;
}


int
shell_test(shell_ty *this_thing)
{
    assert(this_thing);
    assert(this_thing->vptr);
    assert(this_thing->vptr->test);
    return this_thing->vptr->test(this_thing);
}


string_ty *
shell_command_get(shell_ty *this_thing)
{
    assert(this_thing);
    assert(this_thing->vptr);
    assert(this_thing->vptr->command_get);
    return this_thing->vptr->command_get(this_thing);
}


string_ty *
shell_prefix_get(shell_ty *this_thing)
{
    assert(this_thing);
    assert(this_thing->vptr);
    assert(this_thing->vptr->prefix_get);
    return this_thing->vptr->prefix_get(this_thing);
}


void
shell_emit(shell_ty *this_thing, string_ty *s)
{
    assert(this_thing);
    assert(this_thing->vptr);
    assert(this_thing->vptr->emit);
    this_thing->vptr->emit(this_thing, s);
}