mercurial/revlog.py
changeset 2222 c9e264b115e6
parent 2177 6886bc0b77af
child 2250 45aef5ddcdbe
equal deleted inserted replaced
2221:05b6c13f43c6 2222:c9e264b115e6
    20 REVLOGV0 = 0
    20 REVLOGV0 = 0
    21 REVLOGNG = 1
    21 REVLOGNG = 1
    22 
    22 
    23 # revlog flags
    23 # revlog flags
    24 REVLOGNGINLINEDATA = (1 << 16)
    24 REVLOGNGINLINEDATA = (1 << 16)
       
    25 REVLOG_DEFAULT_FLAGS = REVLOGNGINLINEDATA
       
    26 
       
    27 REVLOG_DEFAULT_FORMAT = REVLOGNG
       
    28 REVLOG_DEFAULT_VERSION = REVLOG_DEFAULT_FORMAT | REVLOG_DEFAULT_FLAGS
    25 
    29 
    26 def flagstr(flag):
    30 def flagstr(flag):
    27     if flag == "inline":
    31     if flag == "inline":
    28         return REVLOGNGINLINEDATA
    32         return REVLOGNGINLINEDATA
    29     raise RevlogError(_("unknown revlog flag %s" % flag))
    33     raise RevlogError(_("unknown revlog flag %s" % flag))
   291     Both pieces of the revlog are written to in an append-only
   295     Both pieces of the revlog are written to in an append-only
   292     fashion, which means we never need to rewrite a file to insert or
   296     fashion, which means we never need to rewrite a file to insert or
   293     remove data, and can use some simple techniques to avoid the need
   297     remove data, and can use some simple techniques to avoid the need
   294     for locking while reading.
   298     for locking while reading.
   295     """
   299     """
   296     def __init__(self, opener, indexfile, datafile, defversion=REVLOGV0):
   300     def __init__(self, opener, indexfile, datafile,
       
   301                  defversion=REVLOG_DEFAULT_VERSION):
   297         """
   302         """
   298         create a revlog object
   303         create a revlog object
   299 
   304 
   300         opener is a function that abstracts the file opening operation
   305         opener is a function that abstracts the file opening operation
   301         and can be used to implement COW semantics or the like.
   306         and can be used to implement COW semantics or the like.