1 files changed, 5 insertions, 46 deletions
diff --git a/stmhal/lexerfatfs.c b/stmhal/lexerfatfs.c
index 39b8fefa9..fd7f62dfd 100644
--- a/stmhal/lexerfatfs.c
+++ b/stmhal/lexerfatfs.c
@@ -1,5 +1,5 @@
 /*
- * This file is part of the Micro Python project, http://micropython.org/
+ * This file is part of the MicroPython project, http://micropython.org/
  *
  * The MIT License (MIT)
  *
@@ -24,53 +24,12 @@
  * THE SOFTWARE.
  */
 
-#include <stdio.h>
-
 #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);
 
+// TODO: Instead of such shims, probably better to let port #define
+// mp_lexer_new_from_file to a function it wants to use.
 mp_lexer_t *mp_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);
+    return fat_vfs_lexer_new_from_file(filename);
 }