Mercurial > hg > cc > cirrus_work

changeset 255:0c5b05d62eda

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
value from memory view working
author Henry S. Thompson <ht@inf.ed.ac.uk>
date Sat, 18 Jan 2025 23:00:30 +0000
parents aeb755b72a7d
children cbcdabf6819d
files lib/python/cc/lmh/db.pyx
diffstat 1 files changed, 7 insertions(+), 3 deletions(-) [+]
line wrap: on
line diff
--- a/lib/python/cc/lmh/db.pyx	Sat Jan 18 21:25:17 2025 +0000
+++ b/lib/python/cc/lmh/db.pyx	Sat Jan 18 23:00:30 2025 +0000
@@ -8,6 +8,7 @@
 
 cdef class Cdb:
   cdef cdb.Cdb* _c_cdb
+  
 
   def __cinit__(self):
     self._c_cdb = cdb.cdb_new()
@@ -15,9 +16,10 @@
   cdef int find(self: Cdb, p: bytes):
     return cdb.cdb_find(self._c_cdb, p, len(p))
 
-  cdef void init(self: Cdb, fno: int):
+  cdef char[::1] init(self: Cdb, fno: int):
     cdb.cdb_init(self._c_cdb,fno)
     cdef char[::1] _mview = <char[:cdb.cdb_msize():1]>(cdb.cdb_mmap())
+    return _mview
 
 probe: bytes = sys.argv[2].encode('utf8')
 
@@ -29,10 +31,12 @@
   print('testing...')
   cd = Cdb()
   with open(sys.argv[1],'rb') as dbf:
-    cd.init(dbf.fileno())
+    mv = cd.init(dbf.fileno())
     cdb.cdb_findstart(cd._c_cdb)
     if cd.find(probe) > 0:
-      print(cdb.cdb_pos(), cdb.cdb_len())
+      print(o:=cdb.cdb_pos(), l:=cdb.cdb_len())
+      sys.stdout.buffer.write(mv[o:o+l])
+      sys.stdout.buffer.write(b'\n')
     else:
       print(0)
   print('tested')