mpatch: add setup_mpatch_cffi.py
This file got dropped when the corresponding setup.py changes were
made.
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/setup_mpatch_cffi.py Sun Aug 28 17:51:32 2016 -0700
@@ -0,0 +1,35 @@
+from __future__ import absolute_import
+
+import cffi
+import os
+
+ffi = cffi.FFI()
+mpatch_c = os.path.join(os.path.join(os.path.dirname(__file__), 'mercurial',
+ 'mpatch.c'))
+ffi.set_source("_mpatch_cffi", open(mpatch_c).read(),
+ include_dirs=["mercurial"])
+ffi.cdef("""
+
+struct mpatch_frag {
+ int start, end, len;
+ const char *data;
+};
+
+struct mpatch_flist {
+ struct mpatch_frag *base, *head, *tail;
+};
+
+extern "Python" struct mpatch_flist* cffi_get_next_item(void*, ssize_t);
+
+int mpatch_decode(const char *bin, ssize_t len, struct mpatch_flist** res);
+ssize_t mpatch_calcsize(size_t len, struct mpatch_flist *l);
+void mpatch_lfree(struct mpatch_flist *a);
+static int mpatch_apply(char *buf, const char *orig, size_t len,
+ struct mpatch_flist *l);
+struct mpatch_flist *mpatch_fold(void *bins,
+ struct mpatch_flist* (*get_next_item)(void*, ssize_t),
+ ssize_t start, ssize_t end);
+""")
+
+if __name__ == '__main__':
+ ffi.compile()