view setup_bdiff_cffi.py @ 30221:f2c5b9d48b29 stable

manifest: make treemanifestctx store the repo

Same as in the last commit, the old treemanifestctx stored a reference to the
revlog.  If the inmemory revlog became invalid, the ctx now held an old copy and
would be incorrect. To fix this, we need the ctx to go through the manifestlog
for each access.

This is the same pattern that changectx already uses (it stores the repo, and
accesses commit data through self._repo.changelog).

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()