endianness: Considered.

pat/__init__.py

@@ -19,7 +19,7 @@
 
 
 __author__ = 'Gu Zhengxiong'
-__version__ = '0.4.0'
+__version__ = '0.4.1'
 
 
 PROGRAM_NAME = 'Pat'

pat/main.py

@@ -33,13 +33,15 @@
                       '-V', '--version', prog_name=PROGRAM_NAME)
 @click.argument('argument', required=True)
 @click.argument('sets', nargs=-1)
+@click.option('-b', '--big-endian', is_flag=True,
+              help='Use big-endian.')
 @click.option('-O', '--optimal', type=int,
               help='Use the optimal profile in this position.')
 @click.option('-o', '--output', type=click.File('w'),
               help='Write to this file.')
 @click.option('-c', '--clipboard', is_flag=True,
               help='Output to the clipboard.')
-def main(argument, sets, optimal, output, clipboard):
+def main(argument, sets, big_endian, optimal, output, clipboard):
     """Customizable Exploit Pattern Utility."""
     if sets and optimal:
         pat = Pat.from_chars(''.join(sets), optimal)
@@ -66,7 +68,7 @@ def main(argument, sets, optimal, output, clipboard):
             sys.exit(1)
     else:
         target = argument
-        index = pat.locate_pattern(target)
+        index = pat.locate_pattern(target, big_endian)
         if index:
             print(index)
         else:

pat/pat.py

@@ -58,11 +58,13 @@ def create_pattern(self, count):
             pattern = None
         return pattern
 
-    def locate_pattern(self, pattern):
+    def locate_pattern(self, pattern, big_endian=False):
         """Locate the pattern."""
         space, self.space = tee(self.space)
         if pattern.startswith('0x'):
             target = unhexlify(pattern[2:]).decode('utf-8')
+            if not big_endian:
+                target = target[::-1]
         else:
             target = pattern
         for index, one in enumerate(window(space, self.position)):

setup.py

@@ -22,7 +22,7 @@
 
 
 __author__ = 'Gu Zhengxiong'
-__version__ = '0.4.0'
+__version__ = '0.4.1'
 
 PROGRAM_NAME = 'Pat'
 PACKAGE_NAME = 'pat'

tests/test_pat.py

@@ -14,7 +14,8 @@ def test_create_pattern():
 
 def test_locate_pattern():
     tests = {
-        'Aa0': 0, 'Zz9': 20277, 'n2A': 397
+        'Aa0': 0, 'Zz9': 20277, 'n2A': 397,
+        '0x31634130': 62, '0x41326341': 66, '0x63413363': 70
     }
     for one in tests:
-        assert pat.locate_pattern(one) == tests[one]
+        assert pat.locate_pattern(one, big_endian=False) == tests[one]