improved hex mode

--HG--
branch : pmacs2

application.py

@@ -280,7 +280,7 @@ class Application(object):
             if cipher is None:
                 if not os.path.exists(path) or os.path.isfile(path):
                     if binary:
-                        b = buffer2.BinaryBuffer(path, name=name)
+                        b = buffer2.Binary32Buffer(path, name=name)
                     else:
                         b = buffer2.FileBuffer(path, name=name)
                 elif os.path.isdir(path):
@@ -795,7 +795,7 @@ def open_aes_file(path, nl, name=None):
 def open_plain_file(path, nl, name=None, binary=False):
     if os.path.isfile(path) or not os.path.exists(path):
         if binary:
-            return buffer2.BinaryBuffer(path, nl, name)
+            return buffer2.Binary32Buffer(path, nl, name)
         else:
             return buffer2.FileBuffer(path, nl, name)
     elif os.path.isdir(path):

buffer2.py

@@ -484,27 +484,28 @@ class AesBuffer(FileBuffer):
     def write_filter(self, data):
         return aes.encrypt_data(data, self.password)
 
-class BinaryBuffer(FileBuffer):
+class Binary32Buffer(FileBuffer):
-    btype = 'binfile'
+    btype = 'bin32file'
-    def __init__(self, path, nl='\n', name=None, numbytes=2):
+    wordsize = 4
+    numwords = 4
+    def __init__(self, path, nl='\n', name=None):
         '''fb = FileBuffer(path)'''
         FileBuffer.__init__(self, path, nl, name)
-        self.numbytes = numbytes
     def read_filter(self, data):
         lines = []
         i = 0
         while i < len(data):
             j = 0
             words = []
-            while j < self.numbytes * 8 and i + j < len(data):
+            while j < self.numwords * self.wordsize and i + j < len(data):
                 nibbles = []
-                for c in data[i + j:i + j + 8]:
+                for c in data[i + j:i + j + self.wordsize]:
                     nibbles.append(string.hexdigits[ord(c) / 16])
                     nibbles.append(string.hexdigits[ord(c) % 16])
                 words.append(''.join(nibbles))
-                j += 8
+                j += self.wordsize
             lines.append(' '.join(words))
-            i += self.numbytes * 8
+            i += self.numwords * self.wordsize
         return '\n'.join(lines)
     def write_filter(self, data):
         bytes = []

method.py

@@ -34,7 +34,7 @@ class Argument:
     def coerce_to_type(self, value):
         if self.type == type(0):
             try:
-                return int(value)
+                return int(value, 0)
             except:
                 raise Exception, "expected int; got %s" % (repr(value))
         else:

mode/hex.py

@@ -1,11 +1,12 @@
 import string
 import color, mode2
 from lex3 import Grammar, PatternRule, RegionRule
+from method import Method, Argument
+from point2 import Point
 
 class HexGrammar(Grammar):
     rules = [
         PatternRule(r'zero', r"00"),
-        PatternRule(r'printable', r"[2-7][0-9a-f]"),
         PatternRule(r'byte', r'[0-f][0-f]'),
     ]
 
@@ -13,12 +14,13 @@ class Hex(mode2.Fundamental):
     grammar = HexGrammar
     colors = {
         'zero':      ('magenta', 'default'),
-        'printable': ('green', 'default'),
         'byte':      ('white', 'default'),
     }
     def __init__(self, w):
         mode2.Fundamental.__init__(self, w)
 
+        self.add_action_and_bindings(GotoWord(), ('M-g',))
+
         # create all the insert actions for the basic text input
         for c in string.letters + string.digits + string.punctuation:
             if c in string.hexdigits:
@@ -28,3 +30,16 @@ class Hex(mode2.Fundamental):
 
     def name(self):
         return "Hex"
+
+class GotoWord(Method):
+    '''Jump to the specified line number'''
+    args = [Argument("wordno", type=type(0), prompt="Goto word: ")]
+    def _execute(self, w, **vargs):
+        n = vargs["wordno"]
+        if n < 0:
+            w.set_error("Negative word counts not supported.")
+        try:
+            p = Point((n % 4) * 9, n / 4)
+            w.goto(p)
+        except:
+            w.goto_end()