You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
83 lines
2.8 KiB
83 lines
2.8 KiB
/*
|
|
* This file is part of the Micro Python project, http://micropython.org/
|
|
*
|
|
* The MIT License (MIT)
|
|
*
|
|
* Copyright (c) 2013, 2014 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 "py/mpconfig.h"
|
|
// *_ADHOC part is for cc3200 port which doesn't use general uPy
|
|
// infrastructure and instead duplicates code. TODO: Resolve.
|
|
#if MICROPY_VFS_FAT || MICROPY_FSUSERMOUNT || MICROPY_FSUSERMOUNT_ADHOC
|
|
|
|
#include "py/lexer.h"
|
|
#include "lib/fatfs/ff.h"
|
|
|
|
typedef struct _mp_lexer_file_buf_t {
|
|
FIL fp;
|
|
byte buf[20];
|
|
uint16_t len;
|
|
uint16_t pos;
|
|
} mp_lexer_file_buf_t;
|
|
|
|
STATIC mp_uint_t file_buf_next_byte(mp_lexer_file_buf_t *fb) {
|
|
if (fb->pos >= fb->len) {
|
|
if (fb->len < sizeof(fb->buf)) {
|
|
return MP_LEXER_EOF;
|
|
} else {
|
|
UINT n;
|
|
f_read(&fb->fp, fb->buf, sizeof(fb->buf), &n);
|
|
if (n == 0) {
|
|
return MP_LEXER_EOF;
|
|
}
|
|
fb->len = n;
|
|
fb->pos = 0;
|
|
}
|
|
}
|
|
return fb->buf[fb->pos++];
|
|
}
|
|
|
|
STATIC void file_buf_close(mp_lexer_file_buf_t *fb) {
|
|
f_close(&fb->fp);
|
|
m_del_obj(mp_lexer_file_buf_t, fb);
|
|
}
|
|
|
|
mp_lexer_t *fat_vfs_lexer_new_from_file(const char *filename);
|
|
|
|
mp_lexer_t *fat_vfs_lexer_new_from_file(const char *filename) {
|
|
mp_lexer_file_buf_t *fb = m_new_obj_maybe(mp_lexer_file_buf_t);
|
|
if (fb == NULL) {
|
|
return NULL;
|
|
}
|
|
FRESULT res = f_open(&fb->fp, filename, FA_READ);
|
|
if (res != FR_OK) {
|
|
m_del_obj(mp_lexer_file_buf_t, fb);
|
|
return NULL;
|
|
}
|
|
UINT n;
|
|
f_read(&fb->fp, fb->buf, sizeof(fb->buf), &n);
|
|
fb->len = n;
|
|
fb->pos = 0;
|
|
return mp_lexer_new(qstr_from_str(filename), fb, (mp_lexer_stream_next_byte_t)file_buf_next_byte, (mp_lexer_stream_close_t)file_buf_close);
|
|
}
|
|
|
|
#endif // MICROPY_VFS_FAT
|
|
|