[Zope3-checkins] CVS: Zope3/src/zodb/storage - fsdump.py:1.5.6.1

[Jeremy Hylton]

Update of /cvs-repository/Zope3/src/zodb/storage
In directory cvs.zope.org:/tmp/cvs-serv5718

Modified Files:
      Tag: jeremy-new-pack-branch
	fsdump.py 
Log Message:
Reorganize FileStorage as a package.
Add new reachability code for pack.


=== Zope3/src/zodb/storage/fsdump.py 1.5 => 1.5.6.1 ===
--- Zope3/src/zodb/storage/fsdump.py:1.5	Mon Mar 17 15:18:27 2003
+++ Zope3/src/zodb/storage/fsdump.py	Wed Apr 16 14:12:32 2003
@@ -11,98 +11,4 @@
 # FOR A PARTICULAR PURPOSE.
 #
 ##############################################################################
-"""A low-level utility to dump the internal FileStorage representation."""
-
-import struct
-from zodb.storage.file \
-     import TRANS_HDR, TRANS_HDR_LEN, DATA_HDR, DATA_HDR_LEN
-from zodb.utils import u64
-from zodb.storage.base import splitrefs
-from zodb.storage.tests.base import zodb_unpickle
-
-def fmt(p64):
-    # Return a nicely formatted string for a packaged 64-bit value
-    return "%016x" % u64(p64)
-
-def dump(path, dest=None):
-    Dumper(path, dest).dump()
-
-class Dumper:
-    """A very verbose dumper for debugging FileStorage problems."""
-
-    def __init__(self, path, dest=None):
-        self.file = open(path, "rb")
-        self.dest = dest
-
-    def dump(self):
-        fid = self.file.read(1024)
-        print >> self.dest, "*" * 60
-        print >> self.dest, "file identifier: %r" % fid[:4]
-        print >> self.dest, "database version: %r" % fid[4:8]
-        # XXX perhaps verify that the rest of the metadata is nulls?
-        while self.dump_txn():
-            pass
-
-    def dump_txn(self):
-        pos = self.file.tell()
-        h = self.file.read(TRANS_HDR_LEN)
-        if not h:
-            return False
-        tid, tlen, status, ul, dl, el = struct.unpack(TRANS_HDR, h)
-        end = pos + tlen
-        print >> self.dest, "=" * 60
-        print >> self.dest, "offset: %d" % pos
-        print >> self.dest, "end pos: %d" % end
-        print >> self.dest, "transaction id: %s" % fmt(tid)
-        print >> self.dest, "trec len: %d" % tlen
-        print >> self.dest, "status: %r" % status
-        user = descr = extra = ""
-        if ul:
-            user = self.file.read(ul)
-        if dl:
-            descr = self.file.read(dl)
-        if el:
-            extra = self.file.read(el)
-        print >> self.dest, "user: %r" % user
-        print >> self.dest, "description: %r" % descr
-        print >> self.dest, "len(extra): %d" % el
-        while self.file.tell() < end:
-            self.dump_data(pos)
-        tlen2 = u64(self.file.read(8))
-        print >> self.dest, "redundant trec len: %d" % tlen2
-        return True
-
-    def dump_data(self, tloc):
-        pos = self.file.tell()
-        h = self.file.read(DATA_HDR_LEN)
-        assert len(h) == DATA_HDR_LEN
-        oid, revid, prev, tloc, vlen, nrefs, dlen = struct.unpack(DATA_HDR, h)
-        print >> self.dest, "-" * 60
-        print >> self.dest, "offset: %d" % pos
-        print >> self.dest, "oid: %s" % fmt(oid)
-        print >> self.dest, "revid: %s" % fmt(revid)
-        print >> self.dest, "previous record offset: %d" % prev
-        print >> self.dest, "transaction offset: %d" % tloc
-        if vlen:
-            pnv = self.file.read(8)
-            sprevdata = self.file.read(8)
-            version = self.file.read(vlen)
-            print >> self.dest, "version: %r" % version
-            print >> self.dest, "non-version data offset: %d" % u64(pnv)
-            print >> self.dest, \
-                  "previous version data offset: %d" % u64(sprevdata)
-        print >> self.dest, 'numrefs:', nrefs
-        for ref in splitrefs(self.file.read(nrefs * 8)):
-            print >> self.dest, '\t%s' % fmt(ref)
-        print >> self.dest, "len(data): %d" % dlen
-        data = self.file.read(dlen)
-        # A debugging feature for use with the test suite.
-        if data.startswith("(czodb.storage.tests.minpo\nMinPO\n"):
-            print >> self.dest, "value: %r" % zodb_unpickle(data).value
-        if not dlen:
-            sbp = self.file.read(8)
-            print >> self.dest, "backpointer: %d" % u64(sbp)
-
-if __name__ == "__main__":
-    import sys
-    Dumper(sys.argv[1]).dump()
+from zodb.storage.file.dump import *