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comparison mercurial/changelog.py @ 30001:b5e5ddf48bd2

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revlog: specify checkambig at writing to avoid file stat ambiguity This allows revlog-style files to be written out with checkambig=True easily. Because avoiding file stat ambiguity is needed only for filecache-ed manifest and changelog, this patch does: - use False for default value of checkambig - focus only on writing changes of index file out This patch also adds optional argument checkambig to _divert/_delay for changelog, to safely accept checkambig specified in revlog layer. But this argument can be fully ignored, because: - changes are written into other than index file, if name != target - changes are never written into index file, otherwise (into pending file by _divert, or into in-memory buffer by _delay) This is a part of ExactCacheValidationPlan. https://www.mercurial-scm.org/wiki/ExactCacheValidationPlan
author FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
date Thu, 22 Sep 2016 21:51:58 +0900
parents 2f64e5a6efb8
children 003c41edc5f5
comparison
equal deleted inserted replaced
30000:9766d88c2465 30001:b5e5ddf48bd2
122 self.data.append(str(s)) 122 self.data.append(str(s))
123 self.offset += len(s) 123 self.offset += len(s)
124 124
125 def _divertopener(opener, target): 125 def _divertopener(opener, target):
126 """build an opener that writes in 'target.a' instead of 'target'""" 126 """build an opener that writes in 'target.a' instead of 'target'"""
127 def _divert(name, mode='r'): 127 def _divert(name, mode='r', checkambig=False):
128 if name != target: 128 if name != target:
129 return opener(name, mode) 129 return opener(name, mode)
130 return opener(name + ".a", mode) 130 return opener(name + ".a", mode)
131 return _divert 131 return _divert
132 132
133 def _delayopener(opener, target, buf): 133 def _delayopener(opener, target, buf):
134 """build an opener that stores chunks in 'buf' instead of 'target'""" 134 """build an opener that stores chunks in 'buf' instead of 'target'"""
135 def _delay(name, mode='r'): 135 def _delay(name, mode='r', checkambig=False):
136 if name != target: 136 if name != target:
137 return opener(name, mode) 137 return opener(name, mode)
138 return appender(opener, name, mode, buf) 138 return appender(opener, name, mode, buf)
139 return _delay 139 return _delay
140 140