239 lines
8.4 KiB
C
239 lines
8.4 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2019 Damien P. George
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <stdio.h>
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#include <string.h>
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#include "py/runtime.h"
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#include "py/stream.h"
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#include "py/mperrno.h"
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#include "extmod/vfs.h"
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STATIC void MP_VFS_LFSx(check_open)(MP_OBJ_VFS_LFSx_FILE * self) {
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if (self->vfs == NULL) {
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mp_raise_ValueError(NULL);
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}
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}
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STATIC void MP_VFS_LFSx(file_print)(const mp_print_t * print, mp_obj_t self_in, mp_print_kind_t kind) {
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(void)self_in;
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(void)kind;
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mp_printf(print, "<io.%s>", mp_obj_get_type_str(self_in));
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}
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mp_obj_t MP_VFS_LFSx(file_open)(mp_obj_t self_in, mp_obj_t path_in, mp_obj_t mode_in) {
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MP_OBJ_VFS_LFSx *self = MP_OBJ_TO_PTR(self_in);
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int flags = 0;
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const mp_obj_type_t *type = &MP_TYPE_VFS_LFSx_(_textio);
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const char *mode_str = mp_obj_str_get_str(mode_in);
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for (; *mode_str; ++mode_str) {
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int new_flags = 0;
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switch (*mode_str) {
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case 'r':
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new_flags = LFSx_MACRO(_O_RDONLY);
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break;
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case 'w':
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new_flags = LFSx_MACRO(_O_WRONLY) | LFSx_MACRO(_O_CREAT) | LFSx_MACRO(_O_TRUNC);
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break;
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case 'x':
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new_flags = LFSx_MACRO(_O_WRONLY) | LFSx_MACRO(_O_CREAT) | LFSx_MACRO(_O_EXCL);
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break;
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case 'a':
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new_flags = LFSx_MACRO(_O_WRONLY) | LFSx_MACRO(_O_CREAT) | LFSx_MACRO(_O_APPEND);
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break;
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case '+':
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flags |= LFSx_MACRO(_O_RDWR);
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break;
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#if MICROPY_PY_IO_FILEIO
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case 'b':
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type = &MP_TYPE_VFS_LFSx_(_fileio);
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break;
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#endif
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case 't':
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type = &MP_TYPE_VFS_LFSx_(_textio);
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break;
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}
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if (new_flags) {
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if (flags) {
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mp_raise_ValueError(NULL);
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}
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flags = new_flags;
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}
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}
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if (flags == 0) {
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flags = LFSx_MACRO(_O_RDONLY);
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}
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#if LFS_BUILD_VERSION == 1
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MP_OBJ_VFS_LFSx_FILE *o = m_new_obj_var_with_finaliser(MP_OBJ_VFS_LFSx_FILE, uint8_t, self->lfs.cfg->prog_size);
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#else
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MP_OBJ_VFS_LFSx_FILE *o = m_new_obj_var_with_finaliser(MP_OBJ_VFS_LFSx_FILE, uint8_t, self->lfs.cfg->cache_size);
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#endif
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o->base.type = type;
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o->vfs = self;
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#if !MICROPY_GC_CONSERVATIVE_CLEAR
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memset(&o->file, 0, sizeof(o->file));
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memset(&o->cfg, 0, sizeof(o->cfg));
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#endif
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o->cfg.buffer = &o->file_buffer[0];
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const char *path = MP_VFS_LFSx(make_path)(self, path_in);
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int ret = LFSx_API(file_opencfg)(&self->lfs, &o->file, path, flags, &o->cfg);
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if (ret < 0) {
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o->vfs = NULL;
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mp_raise_OSError(-ret);
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}
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return MP_OBJ_FROM_PTR(o);
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}
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STATIC mp_obj_t MP_VFS_LFSx(file___exit__)(size_t n_args, const mp_obj_t *args) {
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(void)n_args;
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return mp_stream_close(args[0]);
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(MP_VFS_LFSx(file___exit___obj), 4, 4, MP_VFS_LFSx(file___exit__));
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STATIC mp_uint_t MP_VFS_LFSx(file_read)(mp_obj_t self_in, void *buf, mp_uint_t size, int *errcode) {
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MP_OBJ_VFS_LFSx_FILE *self = MP_OBJ_TO_PTR(self_in);
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MP_VFS_LFSx(check_open)(self);
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LFSx_API(ssize_t) sz = LFSx_API(file_read)(&self->vfs->lfs, &self->file, buf, size);
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if (sz < 0) {
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*errcode = -sz;
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return MP_STREAM_ERROR;
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}
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return sz;
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}
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STATIC mp_uint_t MP_VFS_LFSx(file_write)(mp_obj_t self_in, const void *buf, mp_uint_t size, int *errcode) {
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MP_OBJ_VFS_LFSx_FILE *self = MP_OBJ_TO_PTR(self_in);
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MP_VFS_LFSx(check_open)(self);
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LFSx_API(ssize_t) sz = LFSx_API(file_write)(&self->vfs->lfs, &self->file, buf, size);
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if (sz < 0) {
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*errcode = -sz;
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return MP_STREAM_ERROR;
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}
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return sz;
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}
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STATIC mp_uint_t MP_VFS_LFSx(file_ioctl)(mp_obj_t self_in, mp_uint_t request, uintptr_t arg, int *errcode) {
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MP_OBJ_VFS_LFSx_FILE *self = MP_OBJ_TO_PTR(self_in);
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if (request != MP_STREAM_CLOSE) {
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MP_VFS_LFSx(check_open)(self);
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}
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if (request == MP_STREAM_SEEK) {
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struct mp_stream_seek_t *s = (struct mp_stream_seek_t *)(uintptr_t)arg;
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int res = LFSx_API(file_seek)(&self->vfs->lfs, &self->file, s->offset, s->whence);
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if (res < 0) {
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*errcode = -res;
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return MP_STREAM_ERROR;
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}
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res = LFSx_API(file_tell)(&self->vfs->lfs, &self->file);
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if (res < 0) {
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*errcode = -res;
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return MP_STREAM_ERROR;
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}
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s->offset = res;
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return 0;
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} else if (request == MP_STREAM_FLUSH) {
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int res = LFSx_API(file_sync)(&self->vfs->lfs, &self->file);
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if (res < 0) {
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*errcode = -res;
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return MP_STREAM_ERROR;
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}
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return 0;
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} else if (request == MP_STREAM_CLOSE) {
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if (self->vfs == NULL) {
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return 0;
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}
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int res = LFSx_API(file_close)(&self->vfs->lfs, &self->file);
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self->vfs = NULL; // indicate a closed file
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if (res < 0) {
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*errcode = -res;
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return MP_STREAM_ERROR;
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}
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return 0;
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} else {
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*errcode = MP_EINVAL;
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return MP_STREAM_ERROR;
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}
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}
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STATIC const mp_rom_map_elem_t MP_VFS_LFSx(file_locals_dict_table)[] = {
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{ MP_ROM_QSTR(MP_QSTR_read), MP_ROM_PTR(&mp_stream_read_obj) },
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{ MP_ROM_QSTR(MP_QSTR_readinto), MP_ROM_PTR(&mp_stream_readinto_obj) },
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{ MP_ROM_QSTR(MP_QSTR_readline), MP_ROM_PTR(&mp_stream_unbuffered_readline_obj) },
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{ MP_ROM_QSTR(MP_QSTR_readlines), MP_ROM_PTR(&mp_stream_unbuffered_readlines_obj) },
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{ MP_ROM_QSTR(MP_QSTR_write), MP_ROM_PTR(&mp_stream_write_obj) },
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{ MP_ROM_QSTR(MP_QSTR_flush), MP_ROM_PTR(&mp_stream_flush_obj) },
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{ MP_ROM_QSTR(MP_QSTR_close), MP_ROM_PTR(&mp_stream_close_obj) },
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{ MP_ROM_QSTR(MP_QSTR_seek), MP_ROM_PTR(&mp_stream_seek_obj) },
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{ MP_ROM_QSTR(MP_QSTR_tell), MP_ROM_PTR(&mp_stream_tell_obj) },
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{ MP_ROM_QSTR(MP_QSTR___del__), MP_ROM_PTR(&mp_stream_close_obj) },
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{ MP_ROM_QSTR(MP_QSTR___enter__), MP_ROM_PTR(&mp_identity_obj) },
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{ MP_ROM_QSTR(MP_QSTR___exit__), MP_ROM_PTR(&MP_VFS_LFSx(file___exit___obj)) },
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};
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STATIC MP_DEFINE_CONST_DICT(MP_VFS_LFSx(file_locals_dict), MP_VFS_LFSx(file_locals_dict_table));
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#if MICROPY_PY_IO_FILEIO
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STATIC const mp_stream_p_t MP_VFS_LFSx(fileio_stream_p) = {
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MP_PROTO_IMPLEMENT(MP_QSTR_protocol_stream)
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.read = MP_VFS_LFSx(file_read),
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.write = MP_VFS_LFSx(file_write),
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.ioctl = MP_VFS_LFSx(file_ioctl),
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};
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const mp_obj_type_t MP_TYPE_VFS_LFSx_(_fileio) = {
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{ &mp_type_type },
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.name = MP_QSTR_FileIO,
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.print = MP_VFS_LFSx(file_print),
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.getiter = mp_identity_getiter,
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.iternext = mp_stream_unbuffered_iter,
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.protocol = &MP_VFS_LFSx(fileio_stream_p),
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.locals_dict = (mp_obj_dict_t *)&MP_VFS_LFSx(file_locals_dict),
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};
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#endif
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STATIC const mp_stream_p_t MP_VFS_LFSx(textio_stream_p) = {
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MP_PROTO_IMPLEMENT(MP_QSTR_protocol_stream)
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.read = MP_VFS_LFSx(file_read),
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.write = MP_VFS_LFSx(file_write),
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.ioctl = MP_VFS_LFSx(file_ioctl),
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.is_text = true,
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};
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const mp_obj_type_t MP_TYPE_VFS_LFSx_(_textio) = {
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{ &mp_type_type },
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.name = MP_QSTR_TextIOWrapper,
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.print = MP_VFS_LFSx(file_print),
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.getiter = mp_identity_getiter,
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.iternext = mp_stream_unbuffered_iter,
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.protocol = &MP_VFS_LFSx(textio_stream_p),
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.locals_dict = (mp_obj_dict_t *)&MP_VFS_LFSx(file_locals_dict),
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};
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