Use True/False everywhere, and other code cleanups.

Lib/email/base64MIME.py

@@ -41,6 +41,12 @@ EMPTYSTRING = ''
 # See also Charset.py
 MISC_LEN = 7
 
+try:
+    True, False
+except NameError:
+    True = 1
+    False = 0
+
 
 
 # Helpers
@@ -56,8 +62,8 @@ def base64_len(s):
 
 
 
-def header_encode(header, charset='iso-8859-1', keep_eols=0, maxlinelen=76,
-                  eol=NL):
+def header_encode(header, charset='iso-8859-1', keep_eols=False,
+                  maxlinelen=76, eol=NL):
     """Encode a single header line with Base64 encoding in a given charset.
 
     Defined in RFC 2045, this Base64 encoding is identical to normal Base64
@@ -69,7 +75,7 @@ def header_encode(header, charset='iso-8859-1', keep_eols=0, maxlinelen=76,
 
     End-of-line characters (\\r, \\n, \\r\\n) will be automatically converted
     to the canonical email line separator \\r\\n unless the keep_eols
-    parameter is set to true (the default is false).
+    parameter is True (the default is False).
 
     Each line of the header will be terminated in the value of eol, which
     defaults to "\\n".  Set this to "\\r\\n" if you are using the result of
@@ -106,7 +112,7 @@ def header_encode(header, charset='iso-8859-1', keep_eols=0, maxlinelen=76,
     lines = []
     for line in base64ed:
         # Ignore the last character of each line if it is a newline
-        if line[-1] == NL:
+        if line.endswith(NL):
             line = line[:-1]
         # Add the chrome
         lines.append('=?%s?b?%s?=' % (charset, line))
@@ -117,13 +123,13 @@ def header_encode(header, charset='iso-8859-1', keep_eols=0, maxlinelen=76,
 
 
 
-def encode(s, binary=1, maxlinelen=76, eol=NL):
+def encode(s, binary=True, maxlinelen=76, eol=NL):
     """Encode a string with base64.
 
     Each line will be wrapped at, at most, maxlinelen characters (defaults to
     76 characters).
 
-    If binary is false, end-of-line characters will be converted to the
+    If binary is False, end-of-line characters will be converted to the
     canonical email end-of-line sequence \\r\\n.  Otherwise they will be left
     verbatim (this is the default).
 
@@ -143,7 +149,7 @@ def encode(s, binary=1, maxlinelen=76, eol=NL):
         # BAW: should encode() inherit b2a_base64()'s dubious behavior in
         # adding a newline to the encoded string?
         enc = b2a_base64(s[i:i + max_unencoded])
-        if enc[-1] == NL and eol <> NL:
+        if enc.endswith(NL) and eol <> NL:
             enc = enc[:-1] + eol
         encvec.append(enc)
     return EMPTYSTRING.join(encvec)

Lib/email/quopriMIME.py

@@ -38,17 +38,23 @@ MISC_LEN = 7
 hqre = re.compile(r'[^-a-zA-Z0-9!*+/ ]')
 bqre = re.compile(r'[^ !-<>-~\t]')
 
+try:
+    True, False
+except NameError:
+    True = 1
+    False = 0
+
 
 
 # Helpers
 def header_quopri_check(c):
-    """Return true if the character should be escaped with header quopri."""
-    return hqre.match(c) and 1
+    """Return True if the character should be escaped with header quopri."""
+    return hqre.match(c) and True
 
 
 def body_quopri_check(c):
-    """Return true if the character should be escaped with body quopri."""
-    return bqre.match(c) and 1
+    """Return True if the character should be escaped with body quopri."""
+    return bqre.match(c) and True
 
 
 def header_quopri_len(s):
@@ -92,8 +98,8 @@ def quote(c):
 
 
 
-def header_encode(header, charset="iso-8859-1", keep_eols=0, maxlinelen=76,
-                  eol=NL):
+def header_encode(header, charset="iso-8859-1", keep_eols=False,
+                  maxlinelen=76, eol=NL):
     """Encode a single header line with quoted-printable (like) encoding.
 
     Defined in RFC 2045, this `Q' encoding is similar to quoted-printable, but
@@ -114,7 +120,7 @@ def header_encode(header, charset="iso-8859-1", keep_eols=0, maxlinelen=76,
 
     End-of-line characters (\\r, \\n, \\r\\n) will be automatically converted
     to the canonical email line separator \\r\\n unless the keep_eols
-    parameter is set to true (the default is false).
+    parameter is True (the default is False).
 
     Each line of the header will be terminated in the value of eol, which
     defaults to "\\n".  Set this to "\\r\\n" if you are using the result of
@@ -151,10 +157,10 @@ def header_encode(header, charset="iso-8859-1", keep_eols=0, maxlinelen=76,
 
 
 
-def encode(body, binary=0, maxlinelen=76, eol=NL):
+def encode(body, binary=False, maxlinelen=76, eol=NL):
     """Encode with quoted-printable, wrapping at maxlinelen characters.
 
-    If binary is false (the default), end-of-line characters will be converted
+    If binary is False (the default), end-of-line characters will be converted
     to the canonical email end-of-line sequence \\r\\n.  Otherwise they will
     be left verbatim.
 
@@ -213,7 +219,7 @@ def encode(body, binary=0, maxlinelen=76, eol=NL):
         # Now at end of line..
         if prev and prev in ' \t':
             # Special case for whitespace at end of file
-            if lineno+1 == len(lines):
+            if lineno + 1 == len(lines):
                 prev = quote(prev)
                 if len(encoded_line) + len(prev) > maxlinelen:
                     encoded_body += encoded_line + '=' + eol + prev
@@ -283,7 +289,7 @@ def decode(encoded, eol=NL):
             if i == n:
                 decoded += eol
     # Special case if original string did not end with eol
-    if encoded[-1] <> eol and decoded[-1] == eol:
+    if not encoded.endswith(eol) and decoded.endswith(eol):
         decoded = decoded[:-1]
     return decoded