First commit

main.py

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+#!/usr/bin/python
+
+# Universidade Federal da Bahia
+# Estrutura de Dados e Algoritmos II
+# Author: @marciovicente 
+# Email: [email protected]
+
+
+import sys, struct
+sys.path.insert(0, 'libs/')
+
+# TODO - Change another name to Appliocation class
+# because this must be a node of list, and not an application
+
+class Application(object):
+  """ Application Class """
+
+  def __init__(self):
+    self.method = None
+    self.value = None
+    self.sequence = None
+    self.age = None
+    self.file = None
+    self.filename = 'binary'
+    self.SIZE_OF_FILE = 11
+    super(Application, self).__init__()
+
+  def main(self):
+    self.open_file()
+    operation = raw_input()
+    if operation == 'i':
+      self.insert_record()
+    elif operation == 'c':
+      self.query()
+    elif operation != 'e':
+      return
+
+  # UNUSED
+  def get_entries(self):
+    self.value = raw_input()
+    self.sequence = raw_input()
+    self.age = raw_input()
+
+  def mod(self, n):
+    return n % self.SIZE_OF_FILE
+
+  def solve_colision(self):
+    pass
+
+  def point_to_value(self, value):
+    """ This method point to index in file """
+    value = int(value)
+    index = self.mod(value)
+    self.file.seek(index)
+
+  def insert_record(self):
+    self.value = raw_input()
+    self.sequence = raw_input()
+    self.age = raw_input()
+
+    if self.file:
+      self.point_to_value(self.value)
+      if self.file.read(): # ie, if has colision
+        print 'chave ja existente: %s' % self.value
+        self.solve_colision()
+      else:
+        self.file.write(str(self.value))
+
+  def query(self):
+    value = raw_input()
+    self.point_to_value(value)
+    if self.file.read():
+      print 'chave: %s' % value
+      print 'self.sequence'
+      print 'self.age'
+
+  def open_file(self):
+    self.file = open(self.filename, 'rb+')
+
+  def close_file(self):
+    if self.file:
+      self.file.close()
+
+
+
+app = Application()
+app.main()
+

test.bat

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+foo, bar, txt

test.txt

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+foo, bar, txt