setup_bdiff_cffi.py

dirstate: rebuild should update dirstate properly

Updating dirstate by simply adding and dropping files from self._map doesn't
keep the other maps updated (think: _dirs, _copymap, _foldmap, _nonormalset)
thus introducing cache inconsistency.

This is also affecting the debugstate tests since now we don't even try to set
correct mode and mtime for the files because they are marked dirty anyway and
will be checked during next status call.

from __future__ import absolute_import

import cffi
import os

ffi = cffi.FFI()
ffi.set_source("_bdiff_cffi",
    open(os.path.join(os.path.join(os.path.dirname(__file__), 'mercurial'),
        'bdiff.c')).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()