Initial commit

mmv

@@ -0,0 +1,59 @@
+#! /usr/bin/env python
+
+"""mmv: Multiple move.
+A small utility designed to rename files in the current working directory both matching against, and transforming the matches via python regular expressions."""
+
+import re,os,os.path,sys,optparse
+
+class OptParser(optparse.OptionParser):
+    def format_epilog(self,formatter):
+        return self.epilog
+
+parser = OptParser(usage="%prog [OPTIONS] $regex_match [$lambda | $str_method | $regex_sub]",version="%prog 0.9.7.1")
+parser.set_description(__doc__) 
+
+parser.add_option("-l","--lambda",action="store_true",default=False,dest="_lambda",help="Use a lambda expression. Match file names against $regex_match, transform with eval('lambda fname:' + $lambda).")
+parser.add_option("-r","--regex",action="store_true",default=True,dest="_regex",help="(Default) Use regexs. Match file names with $regex_match, transform with $regex_sub.")
+parser.add_option("-s","--string",action="store",default=False,dest="_string",help="Use a python string method to transform file names.")
+parser.add_option("-t","--test",action="store_true",default=False,dest="_test",help="Test. Display all output but do not commit new filenames.")
+parser.add_option("-v","--verbose",action="store_true",default=False,dest="_verbose",help="Verbose. Display output, implied by -t")
+
+parser.epilog = """Examples:
+    mmv -t "mmmv" "mmv"                                                                     #convert all cases of 'mmmv' to 'mmv'
+    mmv -tl "." "'%s.%s' % ('.'.join(fname.split('.')[:-1]),fname.split('.')[1:].upper())"  #capitalize file extensions
+    mmv -tl "open(fname,'r').readline().replace(' ','_')"                                   #use first line of the file for new filename
+    mmv -t --string upper                                                                   #return uppercase filenames
+"""
+
+(options,args) = parser.parse_args()
+
+try:
+    regex = re.compile(args[0])
+except Exception as E:
+    parser.error("Missing or malformed filename matching regex")
+    raise
+
+if options._test:
+    mmv = lambda src,dst: "testing:%s:\t%s" % (src,dst)     #dummy
+    options._verbose = True                                 #always dump testing output
+else:
+    mmv = lambda src,dst: os.rename(src,dst)                #default behavior
+if options._lambda:                                         #user supplied func. uses eval; treat with care
+    trans = eval('lambda fname: %s' % args[1])
+elif options._string:
+    trans = lambda src: getattr(src,options._string)()
+else:
+    trans = lambda src: regex.sub(args[1],src)              #default, simple regex sub
+
+for ix in os.listdir('./'):                                 #cwd only
+    if regex.search(ix):
+        try:
+            dst = trans(ix)
+            result = mmv(ix,dst)
+            if result == None:
+                result = "%s:\t%s" % (ix,dst)
+        except Exception as e:
+            result = e.__doc__
+        if options._verbose:
+            print(result)
+