//
// aegis - project change supervisor
// Copyright (C) 1999, 2003-2008, 2014 Peter Miller
// Copyright (C) 2007, 2008 Walter Franzini
//
// 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/ac/stdio.h>
#include <common/ac/string.h>

#include <libaegis/change.h>
#include <libaegis/change/env_set.h>
#include <common/env.h>
#include <common/nstring.h>
#include <libaegis/project.h>
#include <libaegis/sub.h>


void
change_env_set(change::pointer cp, int with_arch)
{
    //
    // Set environment variables based on project_specific attributes,
    // if specified.
    //
    pconf_ty *pconf_data = change_pconf_get(cp, 0);
    if
    (
        pconf_data->project_specific
    &&
        !cp->project_specific_setenv_performed_get()
    )
    {
        for (size_t j = 0; j < pconf_data->project_specific->length; ++j)
        {
            attributes_ty *ap =
                pconf_data->project_specific->list[j];
            if
            (
                ap->name
            &&
                ap->name->str_length > 7
            &&
                0 == strncasecmp(ap->name->str_text, "setenv:", 7)
            )
            {
                const char *name = ap->name->str_text + 7;
                if (ap->value && ap->value->str_length)
                {
                    sub_context_ty *scp = sub_context_new();
                    nstring env_value(substitute(scp, cp, ap->value));
                    env_set(name, env_value.c_str());
                    sub_context_delete(scp);
                }
                else
                    env_unset(name);
            }
        }
        cp->project_specific_setenv_performed_set();
    }

    //
    // Set the LINES and COLS environment variables.
    //
    env_set_page();

    //
    // set the AEGIS_PROJECT environment cariable
    //
    env_set("AEGIS_PROJECT", cp->project_get()->name_get()->str_text);

    //
    // set the AEGIS_CHANGE environment cariable
    //
    if (cp->is_bogus())
        env_unset("AEGIS_CHANGE");
    else
        env_setf("AEGIS_CHANGE", "%ld", cp->number_get_mzd());

    //
    // set the AEGIS_ARCH environment variable
    //
    string_ty *s = change_architecture_name(cp, with_arch);
    if (s)
        env_set("AEGIS_ARCH", s->str_text);
    else
        env_unset("AEGIS_ARCH");
}


// vim: set ts=8 sw=4 et :