Add code snippets languages beside the CS name in Index

Index.md

@@ -1,5 +1,7 @@
 **13** cheat sheets available.
 
+*Icons beside the cheat sheet name indicate in which language(s) code snippet(s) are provided.*
+
 [A](Index.md#a) [B](Index.md#b) [C](Index.md#c) [D](Index.md#d) [E](Index.md#e) [F](Index.md#f) [H](Index.md#h) [I](Index.md#i) [J](Index.md#j) [K](Index.md#k) [L](Index.md#l) [M](Index.md#m) [O](Index.md#o) 
 
 # A
@@ -8,25 +10,25 @@
 
 [Access Control Cheat Sheet](cheatsheets/Access_Control_Cheat_Sheet.md).
 
-[AJAX Security Cheat Sheet](cheatsheets/AJAX_Security_Cheat_Sheet.md).
+[AJAX Security Cheat Sheet](cheatsheets/AJAX_Security_Cheat_Sheet.md). ![Json](assets/Index_Json.png) 
 
 [Attack Surface Analysis Cheat Sheet](cheatsheets/Attack_Surface_Analysis_Cheat_Sheet.md).
 
 [Authentication Cheat Sheet](cheatsheets/Authentication_Cheat_Sheet.md).
 
-[Authorization Testing Automation](cheatsheets/Authorization_Testing_Automation.md).
+[Authorization Testing Automation](cheatsheets/Authorization_Testing_Automation.md). ![Java](assets/Index_Java.png) ![Xml](assets/Index_Xml.png) 
 
 # B
 
-[Bean Validation Cheat Sheet](cheatsheets/Bean_Validation_Cheat_Sheet.md).
+[Bean Validation Cheat Sheet](cheatsheets/Bean_Validation_Cheat_Sheet.md). ![Java](assets/Index_Java.png) ![Xml](assets/Index_Xml.png) 
 
 # C
 
 [C-Based Toolchain Hardening Cheat Sheet](cheatsheets/C-Based_Toolchain_Hardening_Cheat_Sheet.md).
 
 [Choosing and Using Security Questions Cheat Sheet](cheatsheets/Choosing_and_Using_Security_Questions_Cheat_Sheet.md).
 
-[Clickjacking Defense Cheat Sheet](cheatsheets/Clickjacking_Defense_Cheat_Sheet.md).
+[Clickjacking Defense Cheat Sheet](cheatsheets/Clickjacking_Defense_Cheat_Sheet.md). ![Javascript](assets/Index_Javascript.png) ![Html](assets/Index_Html.png) 
 
 [Credential Stuffing Prevention Cheat Sheet](cheatsheets/Credential_Stuffing_Prevention_Cheat_Sheet.md).
 
@@ -36,39 +38,39 @@
 
 [Denial of Service Cheat Sheet](cheatsheets/Denial_of_Service_Cheat_Sheet.md).
 
-[Deserialization Cheat Sheet](cheatsheets/Deserialization_Cheat_Sheet.md).
+[Deserialization Cheat Sheet](cheatsheets/Deserialization_Cheat_Sheet.md). ![Java](assets/Index_Java.png) ![Csharp](assets/Index_Csharp.png) ![Python](assets/Index_Python.png) 
 
-[DOM based XSS Prevention Cheat Sheet](cheatsheets/DOM_based_XSS_Prevention_Cheat_Sheet.md).
+[DOM based XSS Prevention Cheat Sheet](cheatsheets/DOM_based_XSS_Prevention_Cheat_Sheet.md). ![Javascript](assets/Index_Javascript.png) ![Html](assets/Index_Html.png) 
 
-[DotNet Security Cheat Sheet](cheatsheets/DotNet_Security_Cheat_Sheet.md).
+[DotNet Security Cheat Sheet](cheatsheets/DotNet_Security_Cheat_Sheet.md). ![Csharp](assets/Index_Csharp.png) ![Html](assets/Index_Html.png) ![Xml](assets/Index_Xml.png) ![Sql](assets/Index_Sql.png) 
 
 # E
 
-[Error Handling Cheat Sheet](cheatsheets/Error_Handling_Cheat_Sheet.md).
+[Error Handling Cheat Sheet](cheatsheets/Error_Handling_Cheat_Sheet.md). ![Java](assets/Index_Java.png) ![Csharp](assets/Index_Csharp.png) ![Xml](assets/Index_Xml.png) 
 
 # F
 
 [Forgot Password Cheat Sheet](cheatsheets/Forgot_Password_Cheat_Sheet.md).
 
 # H
 
-[HTML5 Security Cheat Sheet](cheatsheets/HTML5_Security_Cheat_Sheet.md).
+[HTML5 Security Cheat Sheet](cheatsheets/HTML5_Security_Cheat_Sheet.md). ![Javascript](assets/Index_Javascript.png) ![Java](assets/Index_Java.png) ![Json](assets/Index_Json.png) ![Shell](assets/Index_Shell.png) 
 
 [HTTP Strict Transport Security Cheat Sheet](cheatsheets/HTTP_Strict_Transport_Security_Cheat_Sheet.md).
 
 # I
 
-[Injection Prevention Cheat Sheet in Java](cheatsheets/Injection_Prevention_Cheat_Sheet_in_Java.md).
+[Injection Prevention Cheat Sheet in Java](cheatsheets/Injection_Prevention_Cheat_Sheet_in_Java.md). ![Java](assets/Index_Java.png) ![Xml](assets/Index_Xml.png) 
 
-[Input Validation Cheat Sheet](cheatsheets/Input_Validation_Cheat_Sheet.md).
+[Input Validation Cheat Sheet](cheatsheets/Input_Validation_Cheat_Sheet.md). ![Java](assets/Index_Java.png) 
 
-[Insecure Direct Object Reference Prevention Cheat Sheet](cheatsheets/Insecure_Direct_Object_Reference_Prevention_Cheat_Sheet.md).
+[Insecure Direct Object Reference Prevention Cheat Sheet](cheatsheets/Insecure_Direct_Object_Reference_Prevention_Cheat_Sheet.md). ![Java](assets/Index_Java.png) 
 
 # J
 
-[JAAS Cheat Sheet](cheatsheets/JAAS_Cheat_Sheet.md).
+[JAAS Cheat Sheet](cheatsheets/JAAS_Cheat_Sheet.md). ![Java](assets/Index_Java.png) 
 
-[JSON Web Token (JWT) Cheat Sheet for Java](cheatsheets/JSON_Web_Token_(JWT)_Cheat_Sheet_for_Java.md).
+[JSON Web Token (JWT) Cheat Sheet for Java](cheatsheets/JSON_Web_Token_(JWT)_Cheat_Sheet_for_Java.md). ![Javascript](assets/Index_Javascript.png) ![Java](assets/Index_Java.png) ![Json](assets/Index_Json.png) ![Sql](assets/Index_Sql.png) 
 
 # K
 
@@ -82,8 +84,8 @@
 
 # M
 
-[Mass Assignment Cheat Sheet](cheatsheets/Mass_Assignment_Cheat_Sheet.md).
+[Mass Assignment Cheat Sheet](cheatsheets/Mass_Assignment_Cheat_Sheet.md). ![Javascript](assets/Index_Javascript.png) ![Java](assets/Index_Java.png) ![Html](assets/Index_Html.png) ![Php](assets/Index_Php.png) 
 
 # O
 
-[OS Command Injection Defense Cheat Sheet](cheatsheets/OS_Command_Injection_Defense_Cheat_Sheet.md).
+[OS Command Injection Defense Cheat Sheet](cheatsheets/OS_Command_Injection_Defense_Cheat_Sheet.md). ![Java](assets/Index_Java.png) ![Csharp](assets/Index_Csharp.png) ![Shell](assets/Index_Shell.png) 

scripts/Update_CheatSheets_Index.py

@@ -10,8 +10,21 @@
 import os
 from collections import OrderedDict
 
+# Define utility functions
+def extract_languages_snippet_provided(cheatsheet):
+    languages = []
+    markers = ["javascript", "java", "csharp", "c", "cpp", "html", "xml", "python", 
+               "ruby", "php", "json", "sql", "bash", "shell"]
+    with open("../cheatsheets/" + cheatsheet, encoding="utf8") as cs_file:
+        cs_content = cs_file.read().lower().replace(" ","")
+    for marker in markers:
+        if "```" + marker + "\n" in cs_content:
+            languages.append(marker.capitalize())                       
+    return languages
+
 # Define templates
 cs_md_link_template = "[%s](cheatsheets/%s)."
+language_md_link_template = "![%s](assets/Index_%s.png)"
 header_template = "# %s\n\n"
 top_menu_template = "[%s](Index.md#%s)"
 cs_count_template = "**%s** cheat sheets available."
@@ -31,6 +44,7 @@
 with open("../Index.md", "w") as index_file:
     index_count = len(index)
     index_file.write(cs_count_template % index_count)
+    index_file.write("\n\n*Icons beside the cheat sheet name indicate in which language(s) code snippet(s) are provided.*")
     index_file.write("\n\n")
     # Generate the top menu
     for letter in index:
@@ -46,6 +60,12 @@
         for cs_file in index[letter]:
             cs_name = cs_file.replace("_", " ").replace(".md", "").strip()
             index_file.write(cs_md_link_template % (cs_name, cs_file))
+            languages = extract_languages_snippet_provided(cs_file)
+            if len(languages) > 0:
+                index_file.write(" ")
+                for language in languages:
+                    index_file.write(language_md_link_template % (language, language))
+                    index_file.write(" ")
             i += 1
             index_file.write("\n")
             if i != cs_count: