mercurial/revlogutils/constants.py
changeset 47266 921648d31553
parent 47255 ff9fd7107d11
child 47270 25ce16bf724b
equal deleted inserted replaced
47265:a07381751dc9 47266:921648d31553
    34 ## revlog version
    34 ## revlog version
    35 REVLOGV0 = 0
    35 REVLOGV0 = 0
    36 REVLOGV1 = 1
    36 REVLOGV1 = 1
    37 # Dummy value until file format is finalized.
    37 # Dummy value until file format is finalized.
    38 REVLOGV2 = 0xDEAD
    38 REVLOGV2 = 0xDEAD
       
    39 # Dummy value until file format is finalized.
       
    40 CHANGELOGV2 = 0xD34D
    39 
    41 
    40 ##  global revlog header flags
    42 ##  global revlog header flags
    41 # Shared across v1 and v2.
    43 # Shared across v1 and v2.
    42 FLAG_INLINE_DATA = 1 << 16
    44 FLAG_INLINE_DATA = 1 << 16
    43 # Only used by v1, implied by v2.
    45 # Only used by v1, implied by v2.
    46 REVLOG_DEFAULT_FORMAT = REVLOGV1
    48 REVLOG_DEFAULT_FORMAT = REVLOGV1
    47 REVLOG_DEFAULT_VERSION = REVLOG_DEFAULT_FORMAT | REVLOG_DEFAULT_FLAGS
    49 REVLOG_DEFAULT_VERSION = REVLOG_DEFAULT_FORMAT | REVLOG_DEFAULT_FLAGS
    48 REVLOGV0_FLAGS = 0
    50 REVLOGV0_FLAGS = 0
    49 REVLOGV1_FLAGS = FLAG_INLINE_DATA | FLAG_GENERALDELTA
    51 REVLOGV1_FLAGS = FLAG_INLINE_DATA | FLAG_GENERALDELTA
    50 REVLOGV2_FLAGS = FLAG_INLINE_DATA
    52 REVLOGV2_FLAGS = FLAG_INLINE_DATA
       
    53 CHANGELOGV2_FLAGS = 0
    51 
    54 
    52 ### individual entry
    55 ### individual entry
    53 
    56 
    54 ## index v0:
    57 ## index v0:
    55 #  4 bytes: offset
    58 #  4 bytes: offset
   139 
   142 
   140 SUPPORTED_FLAGS = {
   143 SUPPORTED_FLAGS = {
   141     REVLOGV0: REVLOGV0_FLAGS,
   144     REVLOGV0: REVLOGV0_FLAGS,
   142     REVLOGV1: REVLOGV1_FLAGS,
   145     REVLOGV1: REVLOGV1_FLAGS,
   143     REVLOGV2: REVLOGV2_FLAGS,
   146     REVLOGV2: REVLOGV2_FLAGS,
       
   147     CHANGELOGV2: CHANGELOGV2_FLAGS,
   144 }
   148 }
   145 
   149 
   146 _no = lambda flags: False
   150 _no = lambda flags: False
   147 _yes = lambda flags: True
   151 _yes = lambda flags: True
   148 
   152 
   171         b'inline': _no,
   175         b'inline': _no,
   172         b'generaldelta': _yes,
   176         b'generaldelta': _yes,
   173         b'sidedata': True,
   177         b'sidedata': True,
   174         b'docket': True,
   178         b'docket': True,
   175     },
   179     },
       
   180     CHANGELOGV2: {
       
   181         b'inline': _no,
       
   182         # General delta is useless for changelog since we don't do any delta
       
   183         b'generaldelta': _no,
       
   184         b'sidedata': True,
       
   185         b'docket': True,
       
   186     },
   176 }
   187 }
   177 
   188 
   178 
   189 
   179 SPARSE_REVLOG_MAX_CHAIN_LENGTH = 1000
   190 SPARSE_REVLOG_MAX_CHAIN_LENGTH = 1000