mercurial/cffi/mpatchbuild.py
author Augie Fackler <augie@google.com>
Sun, 06 Oct 2019 09:48:39 -0400
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formatting: byteify all mercurial/ and hgext/ string literals Done with python3.7 contrib/byteify-strings.py -i $(hg files 'set:mercurial/**.py - mercurial/thirdparty/** + hgext/**.py - hgext/fsmonitor/pywatchman/** - mercurial/__init__.py') black -l 80 -t py33 -S $(hg files 'set:**.py - mercurial/thirdparty/** - "contrib/python-zstandard/**" - hgext/fsmonitor/pywatchman/**') # skip-blame mass-reformatting only Differential Revision: https://phab.mercurial-scm.org/D6972
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from __future__ import absolute_import
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import cffi
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import os
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ffi = cffi.FFI()
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mpatch_c = os.path.join(
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    os.path.join(os.path.dirname(__file__), b'..', b'mpatch.c')
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)
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with open(mpatch_c) as f:
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    ffi.set_source(
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        b"mercurial.cffi._mpatch", f.read(), include_dirs=[b"mercurial"]
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    )
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ffi.cdef(
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    """
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struct mpatch_frag {
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       int start, end, len;
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       const char *data;
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};
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struct mpatch_flist {
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       struct mpatch_frag *base, *head, *tail;
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};
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extern "Python" struct mpatch_flist* cffi_get_next_item(void*, ssize_t);
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int mpatch_decode(const char *bin, ssize_t len, struct mpatch_flist** res);
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ssize_t mpatch_calcsize(size_t len, struct mpatch_flist *l);
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void mpatch_lfree(struct mpatch_flist *a);
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static int mpatch_apply(char *buf, const char *orig, size_t len,
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                        struct mpatch_flist *l);
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struct mpatch_flist *mpatch_fold(void *bins,
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                       struct mpatch_flist* (*get_next_item)(void*, ssize_t),
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                       ssize_t start, ssize_t end);
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"""
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)
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if __name__ == '__main__':
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    ffi.compile()