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bf5d619a52
* Add MemMapFileStream * Added tests * Fixed bug in memfiles (zero index for string) * Added flush to changelog * Attempt to fix Win's nuances * Fix attempt to fix * Continue... * And again... * Reworked tests (all for win on Win) * Fixes in flush (Win) * Replace fn vars to consts * Added the attempts parameter to the flush * Replace while to for * Move to memfiles * Use Natural instead of uint * Better error messages for append mode. Handle specific cases.
54 lines
1.4 KiB
Nim
54 lines
1.4 KiB
Nim
discard """
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file: "tmemmapstreams.nim"
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output: '''Created size: 10
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Position after writing: 5
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Position after writing one char: 6
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Peeked data: Hello
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Position after peeking: 0
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Readed data: Hello!
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Position after reading line: 7
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Position after setting position: 6
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Readed line: Hello!
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Position after reading line: 7'''
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"""
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import os, streams, memfiles
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const
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fn = "test.mmapstream"
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var
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mms: MemMapFileStream
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if fileExists(fn): removeFile(fn)
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# Create a new memory mapped file, data all zeros
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mms = newMemMapFileStream(fn, mode = fmReadWrite, fileSize = 10)
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mms.close()
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if fileExists(fn): echo "Created size: ", getFileSize(fn)
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# write, flush, peek, read
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mms = newMemMapFileStream(fn, mode = fmReadWrite)
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let s = "Hello"
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mms.write(s)
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mms.flush
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echo "Position after writing: ", mms.getPosition()
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mms.write('!')
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mms.flush
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echo "Position after writing one char: ", mms.getPosition()
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mms.close()
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mms = newMemMapFileStream(fn, mode = fmRead)
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echo "Peeked data: ", mms.peekStr(s.len)
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echo "Position after peeking: ", mms.getPosition()
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echo "Readed data: ", mms.readLine
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echo "Position after reading line: ", mms.getPosition()
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mms.setPosition(mms.getPosition() - 1)
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echo "Position after setting position: ", mms.getPosition()
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mms.setPosition(0)
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echo "Readed line: ", mms.readLine
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echo "Position after reading line: ", mms.getPosition()
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mms.close()
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if fileExists(fn): removeFile(fn)
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