revlog: break up compression of large deltas
Python's zlib apparently makes an internal copy of strings passed to
compress(). To avoid this, compress strings 1M at a time, then join
them at the end if the result would be smaller than the original.
For initial commits of large but compressible files, this cuts peak
memory usage nearly in half.
#!/usr/bin/env python
import ConfigParser
from mercurial import ui, util, dispatch
testui = ui.ui()
parsed = dispatch._parseconfig([
'values.string=string value',
'values.bool1=true',
'values.bool2=false',
'lists.list1=foo',
'lists.list2=foo bar baz',
'lists.list3=alice, bob',
'lists.list4=foo bar baz alice, bob',
'interpolation.value1=hallo',
'interpolation.value2=%(value1)s world',
'interpolation.value3=%(novalue)s',
'interpolation.value4=%(bad)1',
'interpolation.value5=%bad2',
])
testui.updateopts(config=parsed)
print repr(testui.configitems('values'))
print repr(testui.configitems('lists'))
try:
print repr(testui.configitems('interpolation'))
except util.Abort, inst:
print inst
print "---"
print repr(testui.config('values', 'string'))
print repr(testui.config('values', 'bool1'))
print repr(testui.config('values', 'bool2'))
print repr(testui.config('values', 'unknown'))
print "---"
try:
print repr(testui.configbool('values', 'string'))
except util.Abort, inst:
print inst
print repr(testui.configbool('values', 'bool1'))
print repr(testui.configbool('values', 'bool2'))
print repr(testui.configbool('values', 'bool2', True))
print repr(testui.configbool('values', 'unknown'))
print repr(testui.configbool('values', 'unknown', True))
print "---"
print repr(testui.configlist('lists', 'list1'))
print repr(testui.configlist('lists', 'list2'))
print repr(testui.configlist('lists', 'list3'))
print repr(testui.configlist('lists', 'list4'))
print repr(testui.configlist('lists', 'list4', ['foo']))
print repr(testui.configlist('lists', 'unknown'))
print repr(testui.configlist('lists', 'unknown', ''))
print repr(testui.configlist('lists', 'unknown', 'foo'))
print repr(testui.configlist('lists', 'unknown', ['foo']))
print repr(testui.configlist('lists', 'unknown', 'foo bar'))
print repr(testui.configlist('lists', 'unknown', 'foo, bar'))
print repr(testui.configlist('lists', 'unknown', ['foo bar']))
print repr(testui.configlist('lists', 'unknown', ['foo', 'bar']))
print "---"
print repr(testui.config('interpolation', 'value1'))
print repr(testui.config('interpolation', 'value2'))
try:
print repr(testui.config('interpolation', 'value3'))
except util.Abort, inst:
print inst
try:
print repr(testui.config('interpolation', 'value4'))
except util.Abort, inst:
print inst
try:
print repr(testui.config('interpolation', 'value5'))
except util.Abort, inst:
print inst
print "---"
cp = util.configparser()
cp.add_section('foo')
cp.set('foo', 'bar', 'baz')
try:
# should fail - keys are case-sensitive
cp.get('foo', 'Bar')
except ConfigParser.NoOptionError, inst:
print inst
def function():
pass
cp.add_section('hook')
# values that aren't strings should work
cp.set('hook', 'commit', function)
f = cp.get('hook', 'commit')
print "f %s= function" % (f == function and '=' or '!')