added zipreplace_comp.py as composition example

python_3_oop/chapter05/zipreplace_comp.py

@@ -0,0 +1,25 @@
+from zipprocessor import ZipProcessorComp
+import sys
+import os
+
+
+
+class ZipReplace:
+
+    def __init__(self, search_string, replace_string):
+        self.search_string = search_string
+        self.replace_string = replace_string
+
+    def process(self, zipprocessor):
+        "perform a search and replace on all files in the temporary directory"
+        for filename in os.listdir(zipprocessor.temp_directory):
+            with open(zipprocessor._full_filename(filename)) as file:
+                contents = file.read()
+                contents = contents.replace(self.search_string,
+                    self.replace_string)
+            with open(zipprocessor._full_filename(filename), "w") as file:
+                file.write(contents)
+
+if __name__ == "__main__":
+    zipreplace = ZipReplace(*sys.argv[2:4])
+    ZipProcessorComp(sys.argv[1], zipreplace).process_zip()