kopia lustrzana https://github.com/micropython/micropython
83 wiersze
2.6 KiB
C
83 wiersze
2.6 KiB
C
/*
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* This file is part of the Micro Python 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) 2013, 2014 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 "py/mpconfig.h"
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#if MICROPY_FSUSERMOUNT
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#include <string.h>
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#include "py/mpstate.h"
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#include "lib/fatfs/ff.h"
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#include "lib/fatfs/ffconf.h"
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#include "lib/fatfs/diskio.h"
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#include "extmod/fsusermount.h"
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STATIC bool check_path(const TCHAR **path, const char *mount_point_str, mp_uint_t mount_point_len) {
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if (strncmp(*path, mount_point_str, mount_point_len) == 0) {
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if ((*path)[mount_point_len] == '/') {
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*path += mount_point_len;
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return true;
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} else if ((*path)[mount_point_len] == '\0') {
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*path = "/";
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return true;
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}
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}
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return false;
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}
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// "path" is the path to lookup; will advance this pointer beyond the volume name.
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// Returns logical drive number (-1 means invalid path).
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int ff_get_ldnumber (const TCHAR **path) {
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if (!(*path)) {
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return -1;
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}
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if (**path != '/') {
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#if _FS_RPATH
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return ff_CurrVol;
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#else
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return -1;
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#endif
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}
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for (size_t i = 0; i < MP_ARRAY_SIZE(MP_STATE_PORT(fs_user_mount)); ++i) {
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fs_user_mount_t *vfs = MP_STATE_PORT(fs_user_mount)[i];
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if (vfs != NULL && check_path(path, vfs->str, vfs->len)) {
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return i;
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}
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}
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return -1;
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}
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void ff_get_volname(BYTE vol, TCHAR **dest) {
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fs_user_mount_t *vfs = MP_STATE_PORT(fs_user_mount)[vol];
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memcpy(*dest, vfs->str, vfs->len);
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*dest += vfs->len;
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}
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#endif // MICROPY_FSUSERMOUNT
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