add: strings and projects

20-project-spam-masker/01-step-1/main.go

@@ -0,0 +1,54 @@
+// 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/
+//
+
+/*
+✅ #1- Get and check the input
+✅ #2- Create a byte buffer and use it as the output
+✅ #3- Write input to the buffer as it is and print it
+✅ #4- Detect the link
+#5- Mask the link
+#6- Stop masking when whitespace is detected
+#7- Put a http:// prefix in front of the masked link
+*/
+
+package main
+
+import (
+	"fmt"
+	"os"
+)
+
+func main() {
+	args := os.Args[1:]
+	if len(args) != 1 {
+		fmt.Println("gimme somethin' to mask!")
+		return
+	}
+
+	const (
+		link  = "http://"
+		nlink = len(link)
+	)
+
+	var (
+		text = args[0]
+		size = len(text)
+		buf  = make([]byte, 0, size)
+	)
+
+	for i := 0; i < size; i++ {
+		buf = append(buf, text[i])
+
+		// slice the input and look for the link pattern
+		// do not slice it when it goes beyond the input text's capacity
+		if len(text[i:]) >= nlink && text[i:i+nlink] == link {
+		}
+	}
+
+	// print out the buffer as text (string)
+	fmt.Println(string(buf))
+}

20-project-spam-masker/01-step-1/spam.txt

@@ -0,0 +1,7 @@
+Hi guys, 
+
+Here is my new spammy webpage http://www.mysuperpage.com <-- This is my website!
+
+Please click on the link now!!!
+
+When you click, I will be rich, thanks!