# HG changeset patch
# User Pulkit Goyal <7895pulkit@gmail.com>
# Date 1515580175 -19800
# Node ID a29d063d09e1680184eaa6c563a72ea102c67507
# Parent  62f33ed3c36ca6c0d2b2cd7f6d2ef4c2a98c7413
evolve: remove the old functions for writing evolvestate

Previous patch made all the users of these functions to use the evolvestate
class and now they are not required. Let's remove them.

diff -r 62f33ed3c36c -r a29d063d09e1 hgext3rd/evolve/__init__.py
--- a/hgext3rd/evolve/__init__.py	Wed Jan 10 15:57:43 2018 +0530
+++ b/hgext3rd/evolve/__init__.py	Wed Jan 10 15:59:35 2018 +0530
@@ -257,7 +257,6 @@
 import sys
 import re
 import collections
-import errno
 import struct
 
 try:
@@ -2484,70 +2483,6 @@
     util.unlinkpath(repo.vfs.join('evolvestate'), ignoremissing=True)
     return ret
 
-def _evolvestatewrite(repo, state):
-    # [version]
-    # [type][length][content]
-    #
-    # `version` is a 4 bytes integer (handled at higher level)
-    # `type` is a single character, `length` is a 4 byte integer, and
-    # `content` is an arbitrary byte sequence of length `length`.
-    f = repo.vfs('evolvestate', 'w')
-    try:
-        f.write(_pack('>I', evolvestateversion))
-        current = state['current']
-        key = 'C' # as in 'current'
-        format = '>sI%is' % len(current)
-        f.write(_pack(format, key, len(current), current))
-    finally:
-        f.close()
-
-def _evolvestateread(repo):
-    try:
-        f = repo.vfs('evolvestate')
-    except IOError as err:
-        if err.errno != errno.ENOENT:
-            raise
-        return None
-    try:
-        versionblob = f.read(4)
-        if len(versionblob) < 4:
-            repo.ui.debug('ignoring corrupted evolvestate (file contains %i bits)'
-                          % len(versionblob))
-            return None
-        version = _unpack('>I', versionblob)[0]
-        if version != evolvestateversion:
-            msg = _('unknown evolvestate version %i') % version
-            raise error.Abort(msg, hint=_('upgrade your evolve'))
-        records = []
-        data = f.read()
-        off = 0
-        end = len(data)
-        while off < end:
-            rtype = data[off]
-            off += 1
-            length = _unpack('>I', data[off:(off + 4)])[0]
-            off += 4
-            record = data[off:(off + length)]
-            off += length
-            if rtype == 't':
-                rtype, record = record[0], record[1:]
-            records.append((rtype, record))
-        state = {}
-        for rtype, rdata in records:
-            if rtype == 'C':
-                state['current'] = rdata
-            elif rtype.lower():
-                repo.ui.debug('ignore evolve state record type %s' % rtype)
-            else:
-                raise error.Abort(_('unknown evolvestate field type %r')
-                                  % rtype, hint=_('upgrade your evolve'))
-        return state
-    finally:
-        f.close()
-
-def _evolvestatedelete(repo):
-    util.unlinkpath(repo.vfs.join('evolvestate'), ignoremissing=True)
-
 def _evolvemerge(repo, orig, dest, pctx, keepbranch):
     """Used by the evolve function to merge dest on top of pctx.
     return the same tuple as merge.graft"""