Mercurial > hg
view mercurial/cffi/bdiffbuild.py @ 47387:75e1104f23a2
revlog: use dedicated code for reading sidedata
We are about to introduce a new, dedicated, file to store sidedata. Before doing so, we make sidedata reading go through different code as reading data chunk. This will simplify some of the complexity of the next changesets.
The reading is very simple right now and will need some improvement later to
reuse some of the caching strategy we use for the data file.
Differential Revision: https://phab.mercurial-scm.org/D10785
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Thu, 27 May 2021 04:09:30 +0200 |
parents | 53607fd3ec6c |
children | 6000f5b25c9b |
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from __future__ import absolute_import import cffi import os ffi = cffi.FFI() with open( os.path.join(os.path.join(os.path.dirname(__file__), '..'), 'bdiff.c') ) as f: ffi.set_source( "mercurial.cffi._bdiff", f.read(), include_dirs=['mercurial'] ) ffi.cdef( """ struct bdiff_line { int hash, n, e; ssize_t len; const char *l; }; struct bdiff_hunk; struct bdiff_hunk { int a1, a2, b1, b2; struct bdiff_hunk *next; }; int bdiff_splitlines(const char *a, ssize_t len, struct bdiff_line **lr); int bdiff_diff(struct bdiff_line *a, int an, struct bdiff_line *b, int bn, struct bdiff_hunk *base); void bdiff_freehunks(struct bdiff_hunk *l); void free(void*); """ ) if __name__ == '__main__': ffi.compile()