Add first part of HTML parser

src/html.rs

@@ -0,0 +1,34 @@
+/*
+	This file will parse from the HTML files
+*/
+
+struct Parser {
+    pos: usize, // "usize" is an unsigned integer, similar to "size_t" in C
+    input: String,
+}
+
+impl Parser {
+    // Read the current character without consuming it.
+    fn next_char(&self) -> char {
+        self.input[self.pos..].chars().next().unwrap()
+    }
+
+    // Do the next characters start with the given string?
+    fn starts_with(&self, s: &str) -> bool {
+        self.input[self.pos ..].starts_with(s)
+    }
+
+    // Return true if all input is consumed.
+    fn eof(&self) -> bool {
+        self.pos >= self.input.len()
+    }
+
+    // Return the current character, and advance self.pos to the next character.
+	fn consume_char(&mut self) -> char {
+		let mut iter = self.input[self.pos..].char_indices();
+		let (_, cur_char) = iter.next().unwrap();
+		let (next_pos, _) = iter.next().unwrap_or((1, ' '));
+		self.pos += next_pos;
+		return cur_char;
+	}
+}