kopia lustrzana https://github.com/micropython/micropython
110 wiersze
2.5 KiB
Python
110 wiersze
2.5 KiB
Python
try:
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import errno, os, vfs
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vfs.VfsFat
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except (ImportError, AttributeError):
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print("SKIP")
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raise SystemExit
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class RAMFS:
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SEC_SIZE = 512
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def __init__(self, blocks):
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self.data = bytearray(blocks * self.SEC_SIZE)
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def readblocks(self, n, buf):
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# print("readblocks(%s, %x(%d))" % (n, id(buf), len(buf)))
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for i in range(len(buf)):
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buf[i] = self.data[n * self.SEC_SIZE + i]
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def writeblocks(self, n, buf):
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# print("writeblocks(%s, %x)" % (n, id(buf)))
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for i in range(len(buf)):
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self.data[n * self.SEC_SIZE + i] = buf[i]
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def ioctl(self, op, arg):
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# print("ioctl(%d, %r)" % (op, arg))
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if op == 4: # MP_BLOCKDEV_IOCTL_BLOCK_COUNT
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return len(self.data) // self.SEC_SIZE
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if op == 5: # MP_BLOCKDEV_IOCTL_BLOCK_SIZE
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return self.SEC_SIZE
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try:
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bdev = RAMFS(50)
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vfs.VfsFat.mkfs(bdev)
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except MemoryError:
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print("SKIP")
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raise SystemExit
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fs = vfs.VfsFat(bdev)
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vfs.mount(fs, "/ramdisk")
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os.chdir("/ramdisk")
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try:
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fs.mkdir("foo_dir")
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except OSError as e:
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print(e.errno == errno.EEXIST)
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try:
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fs.remove("foo_dir")
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except OSError as e:
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print(e.errno == errno.EISDIR)
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try:
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fs.remove("no_file.txt")
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except OSError as e:
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print(e.errno == errno.ENOENT)
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try:
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fs.rename("foo_dir", "/null/file")
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except OSError as e:
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print(e.errno == errno.ENOENT)
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# file in dir
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with open("foo_dir/file-in-dir.txt", "w+t") as f:
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f.write("data in file")
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with open("foo_dir/file-in-dir.txt", "r+b") as f:
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print(f.read())
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with open("foo_dir/sub_file.txt", "w") as f:
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f.write("subdir file")
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# directory not empty
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try:
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fs.rmdir("foo_dir")
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except OSError as e:
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print(e.errno == errno.EACCES)
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# trim full path
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fs.rename("foo_dir/file-in-dir.txt", "foo_dir/file.txt")
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print(list(fs.ilistdir("foo_dir")))
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fs.rename("foo_dir/file.txt", "moved-to-root.txt")
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print(list(fs.ilistdir()))
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# check that renaming to existing file will overwrite it
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with open("temp", "w") as f:
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f.write("new text")
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fs.rename("temp", "moved-to-root.txt")
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print(list(fs.ilistdir()))
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with open("moved-to-root.txt") as f:
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print(f.read())
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# valid removes
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fs.remove("foo_dir/sub_file.txt")
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fs.rmdir("foo_dir")
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print(list(fs.ilistdir()))
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# disk full
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try:
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bsize = fs.statvfs("/ramdisk")[0]
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free = fs.statvfs("/ramdisk")[2] + 1
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f = open("large_file.txt", "wb")
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f.write(bytearray(bsize * free))
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except OSError as e:
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print("ENOSPC:", e.errno == 28) # errno.ENOSPC
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f.close()
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