1 files changed, 48 insertions, 0 deletions
diff --git a/src/pollyanna/arbitrary.py b/src/pollyanna/arbitrary.py
new file mode 100644
index 0000000..fbaba4c
--- /dev/null
+++ b/src/pollyanna/arbitrary.py
@@ -0,0 +1,48 @@
+from more_itertools import peekable
+import re
+
+
+class ArbitraryParser:
+    """Matches command strings with %s in them denoting arbitrary phrases"""
+
+    def __init__(self):
+        self.all_words = []
+        self.all_words.append("amazing")
+        self.all_words.append("this")
+        self.all_words.append("is")
+        self.all_words.append("a")
+        self.all_words.append("test")
+        self.all_words.append("of")
+        self.all_words.append("pollyana")
+        self.all_words.append("voice")
+        self.all_words.append("typing")
+        self.all_words.append("fuck")
+        self.all_words.append("yeah")
+
+    def match(self, command, text_line):
+        """
+        Determine whether a line of input text matches a command that has %s
+        in it. Commands without %s may be passed, and will never match.
+
+        Returns None if no match, or a list of the words that matched the %s
+        if one was found.
+
+        Only a single %s is supported and it must be at the end of the
+        command.
+        """
+
+        command_words = re.split(r'[,\s-]+', command.strip())
+        text_words = re.split(r'[,\s-]+', text_line.strip())
+
+        text_iter = peekable(text_words)
+        for word in command_words:
+            is_text_end = text_iter.peek(default=None) == None
+            if word == '%s':
+                if not is_text_end:
+                    return list(text_iter)
+                else:
+                    return None
+            elif is_text_end or word != next(text_iter):
+                return None
+
+        return None