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extmod: Add generic VFS sub-system.

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This provides mp_vfs_XXX functions (eg mount, open, listdir) which are
agnostic to the underlying filesystem type, and just require an object with
the relevant filesystem-like methods (eg .mount, .open, .listidr) which can
then be mounted.

These mp_vfs_XXX functions would typically be used by a port to implement
the "uos" module, and mp_vfs_open would be the builtin open function.

This feature is controlled by MICROPY_VFS, disabled by default.
This commit is contained in:
Damien George
2017-01-27 15:10:09 +11:00
parent 32a1138b9f
commit dcb9ea7215
9 changed files with 492 additions and 1 deletions
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py/qstrdefs.h
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@@ -36,6 +36,7 @@ QCFG(BYTES_IN_HASH, MICROPY_QSTR_BYTES_IN_HASH)
Q()
Q(*)
Q(_)
Q(/)
Q(%#o)
Q(%#x)
Q({:#b})