Add the actual file

.gitattributes

@@ -1,2 +1,5 @@
 # Auto detect text files and perform LF normalization
 * text=auto
+
+*.pwn linguist-language=Pawn
+*.inc linguist-language=Pawn

array_util.inc

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+/**
+ * MIT License
+ * 
+ * Copyright (c) 2018 Vince0789
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+// -----------------------------------------------------------------------------
+
+/**
+ * <summary>
+ *  Appends <c>value</c> to the end of array. Pushes the first value off and 
+ *	returns it, moves everything down.
+ * </summary>
+ * <param name="array">The array to append the value to.</param>
+ * <param name="value">The value to append.</param>
+ * <param name=size">
+ *  Size of the array. If lower than the actual size of the array then indices 
+ *  greater than size are not affected.
+ * </param>
+ * <returns>The value at the first index.</returns>
+ */
+stock array_shift(array[], value, size = sizeof array)
+{
+	new returnval = array[0];
+
+	for(new i; i < size - 1; i++)
+	{
+		array[i] = array[i + 1];
+	}
+
+	array[size - 1] = value;
+	return returnval;
+}
+
+/**
+ * <summary>
+ *  Inserts a value at the start of array. Pushes the last value off and returns 
+ *  it, moves everything up.
+ * </summary>
+ * <param name="array">The array to prepend the value to.</param>
+ * <param name="value">The value to prepend.</param>
+ * <param name=size">
+ *  Size of the array. If lower than the actual size of the array then the index
+ *  at size - 1 is returned and higher indices are not affected.
+ * </param>
+ * <returns>The value at size - 1.</return>
+ */
+stock array_unshift(array[], value, size = sizeof array)
+{
+	new returnval = array[size - 1];
+
+	for(new i = size - 1; i > 0; i--)
+	{
+		array[i] = array[i - 1];
+	}
+
+	array[0] = value;
+	return returnval;
+}
+
+/**
+ * <summary>
+ *  Checks if a value exists within an array.
+ * </summary>
+ * <param name="needle">The value to search for.</param>
+ * <param name="haystack">The array to search in.</param>
+ * <param name="index">Reference variable to store the index of the first match.</param>
+ * <param name="size">Size of the array.</param>
+ * <returns>true if found, false otherwise.</returns>
+ */
+stock bool:in_array(needle, const haystack[], &index = 0, size = sizeof haystack)
+{	
+	while(index < size)
+	{
+		if(haystack[index++] == needle)
+			return true;
+	}
+    return false;
+}
+
+// -----------------------------------------------------------------------------
+// EOF