Initial commit

16-strings-revisited/04-masker-challenge/main.go

@@ -0,0 +1,77 @@
+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
+/*
+------------------------------------------------------------
+RULES
+------------------------------------------------------------
+
+* You shouldn't use a standard library function.
+
+* You should only solve the challenge by manipulating the bytes directly.
+
+* Manipulate the bytes of a string using indexing, slicing, appending etc.
+
+* Be efficient: Do not use string concat (+ operator).
+
+	* Instead, create a new byte slice as a buffer from the given string argument.
+
+	* Then, manipulate it during your program.
+
+	* And, for once, print that buffer.
+
+------------------------------------------------------------
+STEPS
+------------------------------------------------------------
+
+* Mask only links starting with http://
+
+* Don't check for uppercase/lowercase letters
+	* The goal is to learn manipulating bytes in strings
+	* It's not about creating a perfect masker
+
+	* For example: A spammer can prevent the masker like this (for now this is OK):
+
+	  "Here's my spammy page: hTTp://youth-elixir.com"
+
+* But, you should catch this:
+
+	  "Here's my spammy page: http://hehefouls.netHAHAHA see you."
+	  "Here's my spammy page: http://******************* see you."
+*/
+package main
+
+func main() {
+	// ---------------------------------------------------------------
+	// #1
+	// ---------------------------------------------------------------
+	// Check whether there's a command line argument or not
+	// If not, quit from the program with a message
+
+	// ---------------------------------------------------------------
+	// #2
+	// ---------------------------------------------------------------
+	// Create a byte buffer as big as the argument
+
+	// ---------------------------------------------------------------
+	// #3
+	// ---------------------------------------------------------------
+	// 1- Loop and detect the http:// patterns
+	// 2- Copy the input character by character to the buffer
+	// 3- If you detect http:// pattern, copy the http:// first,
+	//    then copy the *s instead of the original link until
+	//    you see a whitespace character.
+	//
+	//    Here: http://www.mylink.com Click!
+	// -> Here: http://************** Click!
+	//
+
+	// ---------------------------------------------------------------
+	// #4
+	// ---------------------------------------------------------------
+	// Print the buffer as a string
+}