circuitpython/stm/lexerfatfs.c

47 lines
1.1 KiB
C

#include <stdint.h>
#include <stdio.h>
#include "ff.h"
#include "misc.h"
#include "lexer.h"
#include "lexerfatfs.h"
unichar file_buf_next_char(mp_lexer_file_buf_t *fb) {
if (fb->pos >= fb->len) {
if (fb->len < sizeof(fb->buf)) {
return MP_LEXER_CHAR_EOF;
} else {
UINT n;
f_read(&fb->fp, fb->buf, sizeof(fb->buf), &n);
if (n == 0) {
return MP_LEXER_CHAR_EOF;
}
fb->len = n;
fb->pos = 0;
}
}
return fb->buf[fb->pos++];
}
void file_buf_close(mp_lexer_file_buf_t *fb) {
f_close(&fb->fp);
}
mp_lexer_t *mp_lexer_new_from_file(const char *filename, mp_lexer_file_buf_t *fb) {
FRESULT res = f_open(&fb->fp, filename, FA_READ);
if (res != FR_OK) {
return NULL;
}
UINT n;
f_read(&fb->fp, fb->buf, sizeof(fb->buf), &n);
fb->len = n;
fb->pos = 0;
return mp_lexer_new(filename, fb, (mp_lexer_stream_next_char_t)file_buf_next_char, (mp_lexer_stream_close_t)file_buf_close);
}
mp_lexer_t *mp_import_open_file(qstr mod_name) {
printf("import not implemented\n");
return NULL;
}