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        "author": "Cameron Simpson",
        "author_email": "cs@cskk.id.au",
        "bugtrack_url": null,
        "classifiers": [
            "Development Status :: 5 - Production/Stable",
            "Intended Audience :: Developers",
            "License :: OSI Approved :: GNU General Public License v3 (GPLv3)",
            "Operating System :: OS Independent",
            "Programming Language :: Python",
            "Programming Language :: Python :: 3",
            "Topic :: Software Development :: Libraries :: Python Modules"
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        "description": "Facilities to do with buffers, particularly CornuCopyBuffer,\nan automatically refilling buffer to support parsing of data streams.\n\n## Function `chunky(bfr_func)`\n\nDecorator for a function accepting a leading CornuCopyBuffer\nparameter.\nReturns a function accepting a leading data chunks parameter\n(bytes instances) and optional `offset` and 'copy_offsets`\nkeywords parameters.\n\nExample::\n\n    @chunky\n    def func(bfr, ...):\n\n## Class `CopyingIterator`\n\nWrapper for an iterator that copies every item retrieved to a callable.\n\n## Class `CornuCopyBuffer`\n\nAn automatically refilling buffer intended to support parsing\nof data streams.\n\nAttributes:\n* `buf`: a buffer of unparsed data from the input, available\n  for direct inspection by parsers\n* `offset`: the logical offset of the buffer; this excludes\n  unconsumed input data and `.buf`\n\nThe primary methods supporting parsing of data streams are\nextend() and take(). Calling `.extend(min_size)` arranges\nthat `.buf` contains at least `min_size` bytes.  Calling `.take(size)`\nfetches exactly `size` bytes from `.buf` and the input source if\nnecessary and returns them, adjusting `.buf`.\n\nlen(CornuCopyBuffer) returns the length of `.buf`.\n\nbool(CornuCopyBuffer) tests whether len() > 0.\n\nIndexing a CornuCopyBuffer accesses `.buf`.\n\nA CornuCopyBuffer is also iterable, yielding data in whatever\nsizes come from its `input_data` source, preceeded by the\ncurrent `.buf` if not empty.\n\nA CornuCopyBuffer also supports the file methods `.read`,\n`.tell` and `.seek` supporting drop in use of the buffer in\nmany file contexts. Backward seeks are not supported. `.seek`\nwill take advantage of the `input_data`'s .seek method if it\nhas one, otherwise it will use reads.\n\n## Class `FDIterator`\n\nMRO: `_Iterator`  \nAn iterator over the data of a file descriptor.\n\n*Note*: the iterator works with an os.dup() of the file\ndescriptor so that it can close it with impunity; this requires\nthe caller to close their descriptor.\n\n## Class `FileIterator`\n\nMRO: `_Iterator`, `SeekableIteratorMixin`  \nAn iterator over the data of a file object.\n\n*Note*: the iterator closes the file on __del__ or if its\n.close method is called.\n\n## Class `SeekableFDIterator`\n\nMRO: `FDIterator`, `_Iterator`, `SeekableIteratorMixin`  \nAn iterator over the data of a seekable file descriptor.\n\n*Note*: the iterator works with an os.dup() of the file\ndescriptor so that it can close it with impunity; this requires\nthe caller to close their descriptor.\n\n## Class `SeekableFileIterator`\n\nMRO: `FileIterator`, `_Iterator`, `SeekableIteratorMixin`  \nAn iterator over the data of a seekable file object.\n\n*Note*: the iterator closes the file on __del__ or if its\n.close method is called.\n\n## Class `SeekableIteratorMixin`\n\nMixin supplying a logical with a `seek` method.\n\n## Class `SeekableMMapIterator`\n\nMRO: `_Iterator`, `SeekableIteratorMixin`  \nAn iterator over the data of a mappable file descriptor.\n\n*Note*: the iterator works with an mmap of an os.dup() of the\nfile descriptor so that it can close it with impunity; this\nrequires the caller to close their descriptor.",
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