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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2013-2019 Damien P. George
*
* 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 <stdio.h>
#include <string.h>
#include "py/obj.h"
#include "py/stream.h"
#include "py/mperrno.h"
#include "py/mphal.h"
// TODO make stdin, stdout and stderr writable objects so they can
// be changed by Python code. This requires some changes, as these
// objects are in a read-only module (py/modsys.c).
/******************************************************************************/
// MicroPython bindings
#define STDIO_FD_IN (0)
#define STDIO_FD_OUT (1)
#define STDIO_FD_ERR (2)
typedef struct _sys_stdio_obj_t {
mp_obj_base_t base;
int fd;
} sys_stdio_obj_t;
#if MICROPY_PY_SYS_STDIO_BUFFER
static const sys_stdio_obj_t stdio_buffer_obj;
#endif
static void stdio_obj_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
sys_stdio_obj_t *self = MP_OBJ_TO_PTR(self_in);
mp_printf(print, "<io.%s %d>", mp_obj_get_type_str(self_in), self->fd);
}
static mp_uint_t stdio_read(mp_obj_t self_in, void *buf, mp_uint_t size, int *errcode) {
sys_stdio_obj_t *self = MP_OBJ_TO_PTR(self_in);
if (self->fd == STDIO_FD_IN) {
for (uint i = 0; i < size; i++) {
int c = mp_hal_stdin_rx_chr();
if (c == '\r') {
c = '\n';
}
((byte *)buf)[i] = c;
}
return size;
} else {
*errcode = MP_EPERM;
return MP_STREAM_ERROR;
}
}
static mp_uint_t stdio_write(mp_obj_t self_in, const void *buf, mp_uint_t size, int *errcode) {
sys_stdio_obj_t *self = MP_OBJ_TO_PTR(self_in);
if (self->fd == STDIO_FD_OUT || self->fd == STDIO_FD_ERR) {
mp_hal_stdout_tx_strn_cooked(buf, size);
return size;
} else {
*errcode = MP_EPERM;
return MP_STREAM_ERROR;
}
}
static mp_uint_t stdio_ioctl(mp_obj_t self_in, mp_uint_t request, uintptr_t arg, int *errcode) {
(void)self_in;
if (request == MP_STREAM_POLL) {
return mp_hal_stdio_poll(arg);
} else if (request == MP_STREAM_CLOSE) {
return 0;
} else {
*errcode = MP_EINVAL;
return MP_STREAM_ERROR;
}
}
static const mp_rom_map_elem_t stdio_locals_dict_table[] = {
#if MICROPY_PY_SYS_STDIO_BUFFER
{ MP_ROM_QSTR(MP_QSTR_buffer), MP_ROM_PTR(&stdio_buffer_obj) },
#endif
{ MP_ROM_QSTR(MP_QSTR_read), MP_ROM_PTR(&mp_stream_read_obj) },
{ MP_ROM_QSTR(MP_QSTR_readinto), MP_ROM_PTR(&mp_stream_readinto_obj) },
{ MP_ROM_QSTR(MP_QSTR_readline), MP_ROM_PTR(&mp_stream_unbuffered_readline_obj)},
{ MP_ROM_QSTR(MP_QSTR_readlines), MP_ROM_PTR(&mp_stream_unbuffered_readlines_obj)},
{ MP_ROM_QSTR(MP_QSTR_write), MP_ROM_PTR(&mp_stream_write_obj) },
{ MP_ROM_QSTR(MP_QSTR_close), MP_ROM_PTR(&mp_identity_obj) },
{ MP_ROM_QSTR(MP_QSTR___enter__), MP_ROM_PTR(&mp_identity_obj) },
{ MP_ROM_QSTR(MP_QSTR___exit__), MP_ROM_PTR(&mp_stream___exit___obj) },
};
static MP_DEFINE_CONST_DICT(stdio_locals_dict, stdio_locals_dict_table);
static const mp_stream_p_t stdio_obj_stream_p = {
.read = stdio_read,
.write = stdio_write,
.ioctl = stdio_ioctl,
.is_text = true,
};
MP_DEFINE_CONST_OBJ_TYPE(
stdio_obj_type,
MP_QSTR_TextIOWrapper,
MP_TYPE_FLAG_ITER_IS_STREAM,
print, stdio_obj_print,
protocol, &stdio_obj_stream_p,
locals_dict, &stdio_locals_dict
);
const sys_stdio_obj_t mp_sys_stdin_obj = {{&stdio_obj_type}, .fd = STDIO_FD_IN};
const sys_stdio_obj_t mp_sys_stdout_obj = {{&stdio_obj_type}, .fd = STDIO_FD_OUT};
const sys_stdio_obj_t mp_sys_stderr_obj = {{&stdio_obj_type}, .fd = STDIO_FD_ERR};
#if MICROPY_PY_SYS_STDIO_BUFFER
static mp_uint_t stdio_buffer_read(mp_obj_t self_in, void *buf, mp_uint_t size, int *errcode) {
for (uint i = 0; i < size; i++) {
((byte *)buf)[i] = mp_hal_stdin_rx_chr();
}
return size;
}
static mp_uint_t stdio_buffer_write(mp_obj_t self_in, const void *buf, mp_uint_t size, int *errcode) {
return mp_hal_stdout_tx_strn(buf, size);
}
static const mp_stream_p_t stdio_buffer_obj_stream_p = {
.read = stdio_buffer_read,
.write = stdio_buffer_write,
.ioctl = stdio_ioctl,
.is_text = false,
};
static MP_DEFINE_CONST_OBJ_TYPE(
stdio_buffer_obj_type,
MP_QSTR_FileIO,
MP_TYPE_FLAG_ITER_IS_STREAM,
print, stdio_obj_print,
protocol, &stdio_buffer_obj_stream_p,
locals_dict, &stdio_locals_dict
);
static const sys_stdio_obj_t stdio_buffer_obj = {{&stdio_buffer_obj_type}, .fd = 0}; // fd unused
#endif
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