From 482161e98b254c4d67a81def8c726dad7bf03af8 Mon Sep 17 00:00:00 2001
From: Steve Vaught <Steven.D.Vaught@gmail.com>
Date: Tue, 19 Apr 2011 00:50:58 -0400
Subject: [PATCH] Added error checking for empty parameters

---
 modules/calc.py       | 4 ++++
 modules/dict.py       | 2 ++
 modules/search.py     | 2 ++
 modules/validate.py   | 2 ++
 modules/wiktionary.py | 2 ++
 5 files changed, 12 insertions(+)

diff --git a/modules/calc.py b/modules/calc.py
index 88ac814..5a72e10 100755
--- a/modules/calc.py
+++ b/modules/calc.py
@@ -69,6 +69,8 @@ calc.example = '.calc 5 + 3'
 
 def c(phenny, input): 
    """Google calculator."""
+   if not input.group(2):
+      return phenny.reply("Nothing to calculate.")
    q = input.group(2).encode('utf-8')
    q = q.replace('\xcf\x95', 'phi') # utf-8 U+03D5
    q = q.replace('\xcf\x80', 'pi') # utf-8 U+03C0
@@ -99,6 +101,8 @@ def py(phenny, input):
 py.commands = ['py']
 
 def wa(phenny, input): 
+   if not input.group(2):
+      return phenny.reply("No search term.")
    query = input.group(2).encode('utf-8')
    uri = 'http://tumbolia.appspot.com/wa/'
    answer = web.get(uri + web.urllib.quote(query))
diff --git a/modules/dict.py b/modules/dict.py
index 125f686..8f13e99 100755
--- a/modules/dict.py
+++ b/modules/dict.py
@@ -22,6 +22,8 @@ r_info = re.compile(
 )
 
 def dict(phenny, input): 
+   if not input.group(2):
+      return phenny.reply("Nothing to define.")
    word = input.group(2)
    word = urllib.quote(word.encode('utf-8'))
 
diff --git a/modules/search.py b/modules/search.py
index 1067531..d83a47e 100755
--- a/modules/search.py
+++ b/modules/search.py
@@ -69,6 +69,8 @@ r_query = re.compile(
 )
 
 def gcs(phenny, input): 
+   if not input.group(2):
+      return phenny.reply("Nothing to compare.")
    queries = r_query.findall(input.group(2))
    if len(queries) > 6: 
       return phenny.reply('Sorry, can only compare up to six things.')
diff --git a/modules/validate.py b/modules/validate.py
index 185623f..85815d1 100755
--- a/modules/validate.py
+++ b/modules/validate.py
@@ -11,6 +11,8 @@ import web
 
 def val(phenny, input): 
    """Check a webpage using the W3C Markup Validator."""
+   if not input.group(2):
+      return phenny.reply("Nothing to validate.")
    uri = input.group(2)
    if not uri.startswith('http://'): 
       uri = 'http://' + uri
diff --git a/modules/wiktionary.py b/modules/wiktionary.py
index c8f665e..4a5f407 100755
--- a/modules/wiktionary.py
+++ b/modules/wiktionary.py
@@ -72,6 +72,8 @@ def format(word, definitions, number=2):
    return result.strip(' .,')
 
 def w(phenny, input): 
+   if not input.group(2):
+      return phenny.reply("Nothing to define.")
    word = input.group(2)
    etymology, definitions = wiktionary(word)
    if not definitions: