circuitpython/nrf5/modules/ubluepy/ubluepy_uuid.c

/*
 * This file is part of the Micro Python project, http://micropython.org/
 *
 * The MIT License (MIT)
 *
 * Copyright (c) 2017 Glenn Ruben Bakke
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

#include "py/obj.h"
#include "py/runtime.h"
#include "py/objstr.h"
#include "py/misc.h"

#if MICROPY_PY_UBLUEPY

// farward declare type
const mp_obj_type_t ubluepy_uuid_type;

typedef enum {
    UBLUEPY_UUID_16_BIT,
    UBLUEPY_UUID_128_BIT
} ubluepy_uuid_type_t;

typedef struct _ubluepy_uuid_obj_t {
    mp_obj_base_t       base;
    ubluepy_uuid_type_t type;
    uint8_t             value[16];
} ubluepy_uuid_obj_t;

STATIC void ubluepy_uuid_print(const mp_print_t *print, mp_obj_t o, mp_print_kind_t kind) {
    ubluepy_uuid_obj_t * self = (ubluepy_uuid_obj_t *)o;
    if (self->type == UBLUEPY_UUID_16_BIT) {
        mp_printf(print, "UUID(" HEX2_FMT HEX2_FMT ")", self->value[1], self->value[0]);
    } else {

    }
}

#include <stdio.h>
STATIC mp_obj_t ubluepy_uuid_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *all_args) {

    enum { ARG_NEW_UUID };

    static const mp_arg_t allowed_args[] = {
        { ARG_NEW_UUID, MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} },
    };

    // parse args
    mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
    mp_arg_parse_all_kw_array(n_args, n_kw, all_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);

    ubluepy_uuid_obj_t *s = m_new_obj(ubluepy_uuid_obj_t);
    s->base.type = type;

    mp_obj_t uuid_obj = args[ARG_NEW_UUID].u_obj;

    if (uuid_obj == MP_OBJ_NULL) {
        return MP_OBJ_FROM_PTR(s);
    }

    if (MP_OBJ_IS_INT(uuid_obj)) {
        s->type = UBLUEPY_UUID_16_BIT;
        s->value[1] = (((uint16_t)mp_obj_get_int(uuid_obj)) >> 8) & 0xFF;
        s->value[0] = ((uint8_t)mp_obj_get_int(uuid_obj)) & 0xFF;
    } else if (MP_OBJ_IS_STR(uuid_obj)) {
        GET_STR_DATA_LEN(uuid_obj, str_data, str_len);
        if (str_len == 6) { // Assume hex digit prefixed with 0x
            s->value[0]  = unichar_xdigit_value(str_data[5]);
            s->value[0] += unichar_xdigit_value(str_data[4]) << 4;
            s->value[1]  = unichar_xdigit_value(str_data[3]);
            s->value[1] += unichar_xdigit_value(str_data[2]) << 4;
        } else if (str_len == 36) {
            printf("string length 36\n");
        } else {
            nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_ValueError,
                      "Invalid UUID string length"));
        }
    } else if (MP_OBJ_IS_TYPE(uuid_obj, &ubluepy_uuid_type)) {
        printf("copy of UUID object\n");
    } else {
        nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_ValueError,
                  "Invalid UUID parameter"));
    }

    // "6e400002-b5a3-f393-e0a9-e50e24dcca9e"

    // Check if UUID is of one of the following types and convert it:
    // int from 0 -> 0xFFFFFFFF
    // str value
    // another UUID
    // any other value that can be converted to hex string.

    return MP_OBJ_FROM_PTR(s);
}

STATIC const mp_map_elem_t ubluepy_uuid_locals_dict_table[] = {
#if 0
    { MP_OBJ_NEW_QSTR(MP_QSTR_getCommonName), (mp_obj_t)(&ubluepy_uuid_get_common_name_obj) },
    // Properties
    { MP_OBJ_NEW_QSTR(MP_QSTR_binVal), (mp_obj_t)(&ubluepy_uuid_bin_val_obj) },
#endif
};

STATIC MP_DEFINE_CONST_DICT(ubluepy_uuid_locals_dict, ubluepy_uuid_locals_dict_table);

const mp_obj_type_t ubluepy_uuid_type = {
    { &mp_type_type },
    .name = MP_QSTR_UUID,
    .print = ubluepy_uuid_print,
    .make_new = ubluepy_uuid_make_new,
    .locals_dict = (mp_obj_t)&ubluepy_uuid_locals_dict
};

#endif // MICROPY_PY_UBLUEPY