65dd7bc13d
Some important changes to the way the file system is structured on the pyboard: 1. 0: and 1: drive names are now replaced with POSIX inspired directories, namely /flash and /sd. 2. Filesystem now supports the notion of a current working directory. Supports the standard Python way of manipulating it: os.chdir and os.getcwd. 3. On boot up, current directory is /flash if no SD inserted, else /sd if SD inserted. Then runs boot.py and main.py from the current dir. This is the same as the old behaviour, but is much more consistent and flexible (eg you can os.chdir in boot.py to change where main.py is run from). 4. sys.path (for import) is now set to '' (current dir), plus /flash and /flash/lib, and then /sd and /sd/lib if SD inserted. This, along with CWD, means that import now works properly. You can import a file from the current directory. 5. os.listdir is fixed to return just the basename, not the full path. See issue #537 for background and discussion.
70 lines
2.1 KiB
C
70 lines
2.1 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 <string.h>
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#include "mpconfigport.h"
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#include "ff.h"
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#include "ffconf.h"
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extern BYTE CurrVol;
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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 CurrVol;
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#else
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return -1;
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#endif
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} else if (strncmp(*path, "/flash", 6) == 0) {
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if ((*path)[6] == '/') {
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*path += 6;
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} else if ((*path)[6] == '\0') {
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*path = "/";
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} else {
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return -1;
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}
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return 0;
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} else if (strncmp(*path, "/sd", 3) == 0) {
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if ((*path)[3] == '/') {
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*path += 3;
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} else if ((*path)[3] == '\0') {
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*path = "/";
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} else {
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return -1;
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}
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return 1;
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} else {
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return -1;
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}
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}
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