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:codeauthor: Pedro Algarvio (pedro@algarvio.me)
salt.utils.filebuffer
~~~~~~~~~~~~~~~~~~~~~
This utility allows parsing a file in chunks.
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SaltExceptiont InvalidFileModec B@ s e Z d Z RS( uM
An invalid file mode was used to open the file passed to the buffer
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This object allows iterating through the contents of a file keeping
X configurable bytes in memory which can be used to, for example,
do regex search/matching on more than a single line.
So, **an imaginary, non accurate**, example could be:
1 - Initiate the BufferedReader filling it to max_in_men:
br = [1, 2, 3]
2 - next chunk(pop chunk_size from the left, append chunk_size to the
right):
br = [2, 3, 4]
:type path: str
:param path: The file path to be read
:type max_in_mem: int
:param max_in_mem: The maximum bytes kept in memory while iterating through
the file. Default 256KB.
:type chunk_size: int
:param chunk_size: The size of each consequent read chunk. Default 32KB.
:type mode: str
:param mode: The mode the file should be opened. **Only read modes**.
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Return the next iteration by popping `chunk_size` from the left and
appending `chunk_size` to the right if there's info on the file left
to be read.
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