remove html tag for show command

Signed-off-by: Scott Lee <soulindarkness@gmail.com>

Author: meghendra6

lib/commands/show.js

@@ -1,6 +1,8 @@
 'use strict';
 var util = require('util');
 
+var cheerio = require('cheerio');
+var he = require('he');
 var _ = require('underscore');
 var childProcess = require('child_process');
 
@@ -95,6 +97,19 @@ function genFileName(problem, opts) {
   }
 }
 
+// removes html tags from problem description before printing it to the terminal
+function cleanProblemDesc(desc){
+    // Replace <sup/> with '^' as the power operator
+    desc = desc.replace(/<\/sup>/gm, '').replace(/<sup>/gm, '^');
+    desc = he.decode(cheerio.load(desc).root().text());
+    // NOTE: wordwrap internally uses '\n' as EOL, so here we have to
+    // remove all '\r' in the raw string.
+    desc = desc.replace(/\r\n/g, '\n').replace(/^ /mg, '⁠');
+    // const wrap = require('wordwrap')(79);
+    // desc = wrap(desc);
+    return desc;
+}
+
 function showProblem(problem, argv) {
   const taglist = [problem.category]
     .concat(problem.companies || [])
@@ -174,7 +189,7 @@ function showProblem(problem, argv) {
     log.printf('* Source Code:       %s', chalk.yellow.underline(filename));
 
   log.info();
-  log.info(problem.desc);
+  log.info(cleanProblemDesc(problem.desc));
 }
 
 cmd.handler = function(argv) {