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# filelog.py - file history class for mercurial
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#
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# Copyright 2005, 2006 Matt Mackall <mpm@selenic.com>
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#
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# This software may be used and distributed according to the terms
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# of the GNU General Public License, incorporated herein by reference.
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from revlog import *
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from demandload import *
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demandload(globals(), "os")
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class filelog(revlog):
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def __init__(self, opener, path, defversion=REVLOG_DEFAULT_VERSION):
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revlog.__init__(self, opener,
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"/".join(("data", self.encodedir(path + ".i"))),
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"/".join(("data", self.encodedir(path + ".d"))),
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defversion)
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# This avoids a collision between a file named foo and a dir named
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# foo.i or foo.d
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def encodedir(self, path):
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return (path
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.replace(".hg/", ".hg.hg/")
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.replace(".i/", ".i.hg/")
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.replace(".d/", ".d.hg/"))
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def decodedir(self, path):
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return (path
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.replace(".d.hg/", ".d/")
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.replace(".i.hg/", ".i/")
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.replace(".hg.hg/", ".hg/"))
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def read(self, node):
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t = self.revision(node)
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if not t.startswith('\1\n'):
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return t
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s = t.index('\1\n', 2)
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return t[s+2:]
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def _readmeta(self, node):
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t = self.revision(node)
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if not t.startswith('\1\n'):
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return {}
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s = t.index('\1\n', 2)
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mt = t[2:s]
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m = {}
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for l in mt.splitlines():
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k, v = l.split(": ", 1)
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m[k] = v
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return m
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def add(self, text, meta, transaction, link, p1=None, p2=None):
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if meta or text.startswith('\1\n'):
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mt = ""
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if meta:
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mt = [ "%s: %s\n" % (k, v) for k,v in meta.items() ]
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text = "\1\n%s\1\n%s" % ("".join(mt), text)
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return self.addrevision(text, transaction, link, p1, p2)
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def renamed(self, node):
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if self.parents(node)[0] != nullid:
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return False
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m = self._readmeta(node)
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if m and m.has_key("copy"):
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return (m["copy"], bin(m["copyrev"]))
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return False
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def size(self, rev):
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"""return the size of a given revision"""
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# for revisions with renames, we have to go the slow way
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node = self.node(rev)
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if self.renamed(node):
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return len(self.read(node))
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return revlog.size(self, rev)
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def cmp(self, node, text):
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"""compare text with a given file revision"""
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# for renames, we have to go the slow way
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if self.renamed(node):
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t2 = self.read(node)
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return t2 != text
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return revlog.cmp(self, node, text)
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