added c code execution

Author: tomarviii88

server/api/services/code.service.js

@@ -7,8 +7,8 @@ const ROOT_DIR = `${process.cwd()}`;
 const SOURCE_DIR = path.join(ROOT_DIR, 'executor');
 const TARGET_DIR = `/app/codes`;
 const IMAGE_NAME = 'executor:1.0';
-//const VOL_NAME = `my_vol`;
-const VOL_NAME = SOURCE_DIR;
+const VOL_NAME = `my_vol`;
+//const VOL_NAME = SOURCE_DIR;
 
 class CodeService {
   async execute(code, input, lang, id) {
@@ -77,6 +77,10 @@ class CodeService {
         fileName += '.java';
         break;
       }
+      case 'c': {
+        fileName += '.c';
+        break;
+      }
       default: {
         throw { message: 'Invalid language' };
       }
@@ -114,6 +118,10 @@ class CodeService {
         command = `cd ${TARGET_DIR} && javac ${file} && java Input < ${input}`;
         break;
       }
+      case 'c': {
+        command = `cd ${TARGET_DIR} && gcc -o ${id} ${file} && ./${id} < ${input}`;
+        break;
+      }
       default: {
         throw { message: 'Invalid language' };
       }
@@ -157,9 +165,9 @@ class CodeService {
         if (err) throw { message: err };
       });
     }
-    if (lang == 'c++') {
+    if (lang == 'c++' || lang == 'c') {
       fs.unlinkSync(path.join(SOURCE_DIR, id), err => {
-        if (err) throw { message: err };
+        if (err) throw err;
       });
     }
     if (lang == 'java') {

server/api/services/validation.service.js

@@ -45,6 +45,11 @@ class ValidationService {
           isValid: true
         };
       }
+      case 'c': {
+        return {
+          isValid: true
+        };
+      }
       default: {
         return {
           isValid: false,