match consecutive needles to paths

bin/autojump

@@ -205,25 +205,55 @@ def find_matches(config, needles, count=1):
     needles = map(sanitize, needles)
     ignore_case = detect_smartcase(needles)
 
-    # if one needle, match only against the last directory of each path
-    if len(needles) == 1:
-        exact_matches = match_end(first(needles), data, ignore_case)
-    else:
-        exact_matches = match_regex(needles, data, ignore_case)
+    exact_matches = match_consecutive(needles, data, ignore_case)
 
     exists = lambda entry: os.path.exists(entry.path)
     result = first(ifilter(exists, exact_matches))
+
+    # TODO(ting|2013-12-17): remove debug print
+    print(result)
+    sys.exit(0)
     return result.path if result else u''
 
 
-def match_end(needle, haystack, ignore_case=False):
-    """Matches needle against the last directory of path."""
-    get_last_dir = lambda entry: second(os.path.split(entry.path))
-    if ignore_case:
-        has_needle = lambda entry: needle in get_last_dir(entry).lower()
-    else:
-        has_needle = lambda entry: needle in get_last_dir(entry)
-    return ifilter(has_needle, haystack)
+def match_consecutive(needles, haystack, ignore_case=False):
+    """
+    Matches consecutive needles at the end of a path.
+
+    For example:
+        needles = ['foo', 'baz']
+        haystack = [
+            (path="/foo/bar/baz", 10),
+            (path="/foo/baz/moo", 10),
+            (path="/moo/foo/baz", 10),
+            (path="/foo/baz", 10)]
+
+        regex needle = re.compile(r'''
+            foo     # needle #1
+            [^/]*   # all characters except os.sep zero or more times
+            /       # os.sep
+            [^/]*   # all characters except os.sep zero or more times
+            baz     # needle #2
+            [^/]*   # all characters except os.sep zero or more times
+            $       # end of string
+            '''
+
+        result = [
+            (path="/moo/foo/baz", 10),
+            (path="/foo/baz", 10)]
+    """
+    regex_no_sep = '[^' + os.sep + ']*'
+    regex_one_sep = regex_no_sep + os.sep + regex_no_sep
+    regex_no_sep_end = regex_no_sep + '$'
+    # can't use compiled regex because of flags
+    needle = regex_one_sep.join(needles) + regex_no_sep_end
+    regex_flags = re.IGNORECASE | re.UNICODE if ignore_case else re.UNICODE
+
+    found = lambda haystack: re.search(
+            needle,
+            haystack.path,
+            flags=regex_flags)
+    return ifilter(found, haystack)
 
 
 def match_regex(needles, haystack, ignore_case=False):