From 8f1d52128c90d08ec6da8f3d9c528ac130d4cf8c Mon Sep 17 00:00:00 2001
From: Victor Seva <linuxmaniac@torreviejawireless.org>
Date: Mon, 25 Mar 2013 15:48:27 +0100
Subject: [PATCH] Added string.starts string.ends functions

---
 tests/utils.lua | 20 ++++++++++++++++++++
 utils.lua       |  8 ++++++++
 2 files changed, 28 insertions(+)

diff --git a/tests/utils.lua b/tests/utils.lua
index 74dded7..7d6a193 100644
--- a/tests/utils.lua
+++ b/tests/utils.lua
@@ -49,6 +49,26 @@ TestUtils = {} --class
     function TestUtils:test_explode()
         assertItemsEquals(explode(',',"1,2,3"), {'1','2','3'})
     end
+
+    function TestUtils:test_starts()
+        assertError(string.stats, nil, "g")
+        assertTrue(string.starts("goga", "g"))
+        assertTrue(string.starts("goga", "go"))
+        assertTrue(string.starts("goga", "gog"))
+        assertTrue(string.starts("goga", "goga"))
+        assertFalse(string.starts("goga", "a"))
+        assertError(string.starts, "goga", nil)
+    end
+
+    function TestUtils:test_ends()
+        assertError(string.ends, nil, "g")
+        assertTrue(string.ends("goga", "a"))
+        assertTrue(string.ends("goga", "ga"))
+        assertTrue(string.ends("goga", "oga"))
+        assertTrue(string.ends("goga", "goga"))
+        assertFalse(string.ends("goga", "f"))
+        assertError(string.ends, "goga", nil)
+    end
 -- class TestUtils
 
 TestStack = {}
diff --git a/utils.lua b/utils.lua
index 79b3b2c..31a19ca 100644
--- a/utils.lua
+++ b/utils.lua
@@ -120,6 +120,14 @@ function explode(delimiter, text)
     return list
 end
 
+function string.starts(String,Start)
+   return string.sub(String,1,string.len(Start))==Start
+end
+
+function string.ends(String,End)
+   return End=='' or string.sub(String,-string.len(End))==End
+end
+
 -- Stack Table
 -- Uses a table as stack, use <table>:push(value) and <table>:pop()
 -- Lua 5.1 compatible