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84 lines
2.5 KiB
84 lines
2.5 KiB
5 years ago
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import os
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import re
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STOP_RECURSING = 23452
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class VisitFiles:
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"""
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This is a helper class to visit a bunch of files in a tree given
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the regular expressions that will match the filenames you're interested in.
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Create this class like a function, and pass in these parameters:
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baseDir - a string for the root directory in the search. This must not end in a slash.
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fileMasks - a list of strings that contain regular expressions for filenames you want to match.
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fileCB - This function is called for each filename matched. It takes these parameters:
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- short filename ("blah.txt")
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- relative filename ("a/b/c/blah.txt")
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- long filename ("c:/basedir/a/b/c/blah.txt")
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dirCB - a function called for each directory name. This can be None. If it returns STOP_RECURSING,
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then it won't do callbacks for the files and directories under this one.
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- relative dirName ("./a/b")
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- full dirname (from the baseDir you pass into __init__) ("d:/a/b")
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bRecurse - a boolean telling whether or not to recurse into other directories.
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Example: This would visit all files recursively (.+ matches any non-zero-length string).
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VisitFiles( ".", [".+"], MyCallback )
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"""
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def __init__( self, baseDir, fileMasks, fileCB, dirCB, bRecurse=1 ):
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# Handle it appropriately whether they pass 1 filemask or a list of them.
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if isinstance( fileMasks, list ):
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self.fileMasks = [re.compile( x, re.IGNORECASE ) for x in fileMasks]
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else:
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self.fileMasks = [re.compile( fileMasks, re.IGNORECASE )]
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self.fileCB = fileCB
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self.dirCB = dirCB
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self.bRecurse = bRecurse
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self.__VisitFiles_R( ".", baseDir )
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def __RemoveDotSlash( self, name ):
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if name[0:2] == '.\\':
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return name[2:]
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else:
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return name
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def __VisitFiles_R( self, relativeDirName, baseDirName ):
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if self.dirCB:
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if self.dirCB( relativeDirName, baseDirName ) == 0:
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return
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files = os.listdir( baseDirName )
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for filename in files:
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upperFilename = filename.upper()
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fullFilename = self.__RemoveDotSlash( baseDirName + "\\" + filename )
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relativeName = self.__RemoveDotSlash( relativeDirName + "\\" + filename )
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stats = os.stat( fullFilename )
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if stats[0] & (1<<15):
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matched = 0
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for curRE in self.fileMasks:
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if curRE.search( upperFilename ):
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matched = 1
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break
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if matched:
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self.fileCB( filename, relativeName, fullFilename )
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else:
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# It's a directory.
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if self.bRecurse:
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self.__VisitFiles_R( relativeName, fullFilename )
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