mercurial-scm/hg: mercurial/util.py comparison

Move opener to utils - move the opener code down to util - add docstring - change commands.py users to simply use file instead

comparison

equal deleted inserted replaced

-:142b5d5ec9cc
+:1bca39b85615
 elif os.path.isfile(srcname):
 copyfile(srcname, dstname)
 else:
 pass
+def opener(base):
+"""
+return a function that opens files relative to base
+this function is used to hide the details of COW semantics and
+remote file access from higher level code.
+todo: separate remote file access into a separate function
+"""
+p = base
+def o(path, mode="r"):
+if p.startswith("http://"):
+f = os.path.join(p, urllib.quote(path))
+return httprangereader.httprangereader(f)
+f = os.path.join(p, path)
+mode += "b" # for that other OS
+if mode[0] != "r":
+try:
+s = os.stat(f)
+except OSError:
+d = os.path.dirname(f)
+if not os.path.isdir(d):
+os.makedirs(d)
+else:
+if s.st_nlink > 1:
+file(f + ".tmp", "wb").write(file(f, "rb").read())
+rename(f+".tmp", f)
+return file(f, mode)
+return o
 def _makelock_file(info, pathname):
 ld = os.open(pathname, os.O_CREAT | os.O_WRONLY | os.O_EXCL)
 os.write(ld, info)
 os.close(ld)

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