clean latex equations, $

Eg  ≤ n ≤ 10^6$ -> 1 ≤ n ≤ 10^6

Author: Utsav Krishnan

README.md

@@ -152,4 +152,4 @@ Github: cses-solutions ✔
 *	Supports only C++ currently, will add support for other languages on request. **UPDATE: Done**
 *	A modifiable template code file. **UPDATE: Done**
 *	Auto commit to Github repository **UPDATE: Done**
-*	Clean LaTex based $equation$ from problem statement. Eg $1 ≤ n ≤ 10^6$
+*	Clean LaTex based $equation$ from problem statement. Eg $1 ≤ n ≤ 10^6$ **UPDATE: Done**

cmd/helper.go

@@ -81,7 +81,7 @@ func cacheGet(filename string, ret interface{}, root string) bool {
 	return true
 }
 
-func writeTask(filename string, text string, root string){
+func writeTask(filename string, text string, root string) {
 	f, err := os.Create(filepath.Join(root, filename))
 	defer f.Close()
 	check(err)
@@ -116,7 +116,7 @@ func getTaskFromCache(task string, root string) (string, string) {
 	output, err := exec.Command("bash", "-c", "lynx -dump "+path).Output()
 	check(err)
 	data := string(output)
-	
+
 	for k, v := range unicodeMap {
 		data = strings.Replace(data, k, v, -1)
 	}

cmd/list.go

@@ -22,9 +22,9 @@ import (
 
 // listCmd represents the list command
 var listCmd = &cobra.Command{
-	Use:   "list",
+	Use:     "list",
 	Example: "cses-cli list, cses-cli list -r",
-	Short: "list all problem statements along with status",
+	Short:   "list all problem statements along with status",
 	Long: `Without any flag it lists all the problems from the cache.
 To invalidate/refresh/reload the problem list cache use flag '-r'
 If you are authenticated it will display the submission status along with the list.

cmd/login.go

@@ -28,9 +28,9 @@ import (
 
 // loginCmd represents the login command
 var loginCmd = &cobra.Command{
-	Use:   "login",
+	Use:     "login",
 	Example: "cses-cli login",
-	Short: "authenticate to cses.fi server by username and password",
+	Short:   "authenticate to cses.fi server by username and password",
 	Long: `This command retrieves the csrf token and signs it to the server,
 reads the cookies and saves it in the config file along with the username
 Note: password is not saved in the config file and is only used to sign the csrf token

cmd/problems.go

@@ -6,6 +6,7 @@ import (
 	"os"
 	"os/exec"
 	"path/filepath"
+	"regexp"
 	"strings"
 	"time"
 )
@@ -139,5 +140,13 @@ func getTask(task string) (string, string, bool) {
 		writeTask(filename, text, rootPath)
 	}
 	title, text := getTaskFromCache(task, rootPath)
+
+	text = cleanMathSyntax(text)
+
 	return title, text, true
-}
+}
+
+func cleanMathSyntax(text string) string {
+	re := regexp.MustCompile("\\$([^$]*)\\$")
+	return re.ReplaceAllString(text, "${bold}$1${normal}")
+}

cmd/requests.go

@@ -128,7 +128,7 @@ func ListRequest(cookie string) []*Problem {
 	check(err)
 	defer resp.Body.Close()
 
-	var arr  []*Problem
+	var arr []*Problem
 	doc, err := goquery.NewDocumentFromReader(resp.Body)
 	check(err)
 

cmd/root.go

@@ -24,15 +24,15 @@ import (
 )
 
 var (
-	cfgFile string
+	cfgFile  string
 	rootPath string
 )
 
 // rootCmd represents the base command when called without any subcommands
 var rootCmd = &cobra.Command{
 	Use:   "cses-cli",
 	Short: "command line to solve probmens from https://cses.fi/problemset/",
-	Long: `command line to solve probmens from https://cses.fi/problemset/`,
+	Long:  `command line to solve probmens from https://cses.fi/problemset/`,
 }
 
 // Execute adds all child commands to the root command and sets flags appropriately.

cmd/show.go

@@ -21,11 +21,11 @@ import (
 
 // showCmd represents the show command
 var showCmd = &cobra.Command{
-	Use:   "show",
-	Args: cobra.ExactArgs(1),
-	Short: "show a problem statement by number",
+	Use:     "show",
+	Args:    cobra.ExactArgs(1),
+	Short:   "show a problem statement by number",
 	Example: "cses-cli show 1068",
-	Long: `Print the problem statement identified by the task number to stdout`,
+	Long:    `Print the problem statement identified by the task number to stdout`,
 	Run: func(cmd *cobra.Command, args []string) {
 		ShowProblem(args[0])
 	},

cmd/solve.go

@@ -24,10 +24,10 @@ import (
 
 // solveCmd represents the solve command
 var solveCmd = &cobra.Command{
-	Use:   "solve",
-	Args: cobra.ExactArgs(1),
+	Use:     "solve",
+	Args:    cobra.ExactArgs(1),
 	Example: "cses-cli solve 1068",
-	Short: "solve any problem identified by the task number",
+	Short:   "solve any problem identified by the task number",
 	Long: `This command will print the problem statement by default (use '-s' to disable it)
 By default the editor name is read from the config file to overwrite use like '-e subl', where subl is binary for sublime-text editor.
 The language preference is also read form the config file`,

cmd/submit.go

@@ -23,10 +23,10 @@ import (
 
 // submitCmd represents the submit command
 var submitCmd = &cobra.Command{
-	Use:   "submit",
-	Args: cobra.ExactArgs(1),
+	Use:     "submit",
+	Args:    cobra.ExactArgs(1),
 	Example: "cses-cli submit 1068.Weird-Algorithm.cpp",
-	Short: "submit the solution file and fetch the status",
+	Short:   "submit the solution file and fetch the status",
 	Long: `If the solution is ACCEPTED and github is configured, then it will push the solution to github,
 with limitation that the repo has to be public, since it uses github generated token`,