X-Git-Url: https://git.korewanetadesu.com/?p=python-collate.git;a=blobdiff_plain;f=collate%2F_abcollator.py;h=622766d3b5056c27ca9b9a98ce4609961dd11c1d;hp=71f5f54631a42e8c33ac1945b57ff92066bc0496;hb=7644110ce07ec8a78003ee7db9dcdfe5cbca3854;hpb=c519e411927761939a0461bdf8d0a12b26d965e9

diff --git a/collate/_abcollator.py b/collate/_abcollator.py
index 71f5f54..622766d 100644
--- a/collate/_abcollator.py
+++ b/collate/_abcollator.py
@@ -1,4 +1,57 @@
+"""Abstract base collator."""
+
+import collate.strings
+
 class Collator(object):
+    """Abstract base class for Collators.
+
+    Attributes:
+    locale - the collator follows rules for this locale
+    encoding - assumed string encoding
+    """
+
+    locale = "C"
+    encoding = "ascii"
+
+    def __init__(self, locale=None, encoding=None):
+        pass
+
     def cmp(self, string1, string2):
         """Return negative if a < b, zero if a == b, positive if a > b."""
         return cmp(self.key(string1), self.key(string2))
+
+    def key(self, string):
+        """Return a good sorting key for the string.
+        
+        The sort key should be considered an opaque value which is
+        only meaningful when compared to other sort keys from the same
+        collator.
+        """
+        if isinstance(string, str):
+            string = string.decode(self.encoding, 'replace')
+        return string
+
+    def words(self, string):
+        """Split the string along word boundries."""
+        if isinstance(string, str):
+            string = string.decode(self.encoding, 'replace')
+        return string.split()
+
+    def sortemekey(self, string):
+        """Return a key based on sortemes of a string.
+
+        A sorteme, by analogy with grapheme/morpheme/etc. is an atom
+        of sort information. This is larger than a word boundry but
+        smaller than a sentence boundry; roughly, a sorteme boundry
+        occurs between letters and numbers, between numbers and
+        numbers if 'too much' punctuation exists in between, between
+        lines.
+        """
+        if isinstance(string, str):
+            string = string.decode(self.encoding, 'replace')
+
+        # Shove the sortkeyed original string on the end to resolve
+        # ties intelligently.
+        return (collate.strings.sortemes(string, self.key),
+                self.key(string))
+