Added IndexOf and LastIndexOf methods in class String

src/lol/base/string.h

@@ -117,6 +117,66 @@ public:
         return String(&(*this)[start], count);
     }
 
+	int IndexOf(const char token) const
+	{
+		for (int i = 0; i < Count(); ++i)
+		{
+			if ((*this)[i] == token)
+				return i;
+		}
+		return -1;
+	}
+
+	int IndexOf(const char* token) const
+	{
+		int token_len = strlen(token);
+		if (Count() < token_len)
+			return -1;
+
+		for (int i = 0; i < Count() - token_len + 1; ++i)
+		{
+			int j = 0;
+			for (; j < token_len; ++j)
+			{
+				if ((*this)[i + j] != token[j])
+					break;
+			}
+			if (j == token_len)
+				return i;
+		}
+		return -1;
+	}
+
+	int LastIndexOf(const char token) const
+	{
+		for (int i = Count() - 1; i >= 0; --i)
+		{
+			if ((*this)[i] == token)
+				return i;
+		}
+		return -1;
+	}
+
+	int LastIndexOf(const char* token) const
+	{
+		int token_len = strlen(token);
+		if (Count() < token_len)
+			return -1;
+
+		for (int i = Count() - token_len; i >= 0; --i)
+		{
+			int j = 0;
+			for (; j < token_len; ++j)
+			{
+				if ((*this)[i + j] != token[j])
+					break;
+			}
+			if (j == token_len)
+				return i;
+		}
+		return -1;
+	}
+
     inline String operator +(String const &s) const
     {
         String ret(*this);

test/unit/string.cpp

@@ -148,7 +148,56 @@ LOLUNIT_FIXTURE(StringTest)
         String s5 = "World";
         LOLUNIT_ASSERT(s4 == s5);
     }
-};
+
+	LOLUNIT_TEST(IndexOf)
+	{
+        String s1 = "Hello World";
+		int i1 = s1.IndexOf('H');
+		int i2 = s1.IndexOf('W');
+		int i3 = s1.IndexOf('d');
+
+		int i4 = s1.IndexOf("Hello");
+		int i5 = s1.IndexOf("World");
+		int i6 = s1.IndexOf("lo");
+		int i7 = s1.IndexOf("Hello World");
+		int i8 = s1.IndexOf("Sup' dude");
+
+		LOLUNIT_ASSERT(i1 == 0);
+		LOLUNIT_ASSERT(i2 == 6);
+		LOLUNIT_ASSERT(i3 == 10);
+		LOLUNIT_ASSERT(i4 == i1);
+		LOLUNIT_ASSERT(i5 == i2);
+		LOLUNIT_ASSERT(i6 == 3);
+		LOLUNIT_ASSERT(i7 == 0);
+		LOLUNIT_ASSERT(i8 == -1);
+	}
+
+	LOLUNIT_TEST(LastIndexOf)
+	{
+        String s1 = "Hello World";
+		int i1 = s1.LastIndexOf('H');
+		int i2 = s1.LastIndexOf('W');
+		int i3 = s1.LastIndexOf('d');
+
+		int i4 = s1.LastIndexOf("Hello");
+		int i5 = s1.LastIndexOf("World");
+		int i6 = s1.LastIndexOf("lo");
+		int i7 = s1.LastIndexOf("Hello World");
+		int i8 = s1.LastIndexOf("Sup' dude");
+		int i9 = s1.LastIndexOf('l');
+		int i10 = s1.LastIndexOf('o');
+
+		LOLUNIT_ASSERT(i1 == 0);
+		LOLUNIT_ASSERT(i2 == 6);
+		LOLUNIT_ASSERT(i3 == 10);
+		LOLUNIT_ASSERT(i4 == i1);
+		LOLUNIT_ASSERT(i5 == i2);
+		LOLUNIT_ASSERT(i6 == 3);
+		LOLUNIT_ASSERT(i7 == 0);
+		LOLUNIT_ASSERT(i8 == -1);
+		LOLUNIT_ASSERT(i9 == 9);
+		LOLUNIT_ASSERT(i10 == 7);
+	}};
 
 } /* namespace lol */