Adding Pascal language with FPC (Free Pascal Compiler)

Dockerfile

@@ -8,7 +8,7 @@ ENV NODE_VERSION 16
 
 # Update and install dependencies, including Node 16 directly
 RUN apt-get update && apt-get -y install gcc mono-mcs golang-go \
-    default-jre default-jdk python3-pip python3 curl && \
+    default-jre default-jdk python3-pip python3 curl fpc && \
     curl -fsSL https://deb.nodesource.com/setup_16.x | bash - && \
     apt-get install -y nodejs && \
     rm -rf /var/lib/apt/lists/*

README.md

@@ -34,6 +34,7 @@ Whichever language you might mention in the language field, it would be automati
 | GoLang | go |
 | C# | cs |
 | NodeJS | js |
+| Pascal | pas |
 
 More coming very soon!
 
@@ -119,6 +120,10 @@ This endpoint allows you to list all languages supported and their versions.
       "language": "cs",
       "info": "Mono C# compiler version 4.6.2.0\n"
     }
+    {
+      "language": "pas",
+      "info": "fpc"
+    }
   ]
 }
 ```

src/file-system/removeCodeFile.js

@@ -21,6 +21,17 @@ const removeCodeFile = async (uuid, lang, outputExt) => {
             console.error(`Failed to delete output file: ${outputFile}`, err);
         }
     }
+
+    if (lang === 'pas') {
+        const objectFile = join(OUTPUTS_DIR, `${uuid}.o`);
+        try {
+            if (require("fs").existsSync(objectFile)) {
+                unlinkSync(objectFile);
+            }
+        } catch (err) {
+            console.error(`Failed to delete object file: ${objectFile}`, err);
+        }
+    }
 };
 
 module.exports = {

src/index.js

@@ -44,4 +44,4 @@ app.get('/list', async (req, res) => {
     sendResponse(res, 200, {supportedLanguages: body})
 })
 
-app.listen(port);
+app.listen(port,'0.0.0.0');

src/run-code/index.js

@@ -1,11 +1,11 @@
-const {commandMap, supportedLanguages} = require("./instructions")
-const {createCodeFile} = require("../file-system/createCodeFile")
-const {removeCodeFile} = require("../file-system/removeCodeFile")
-const {info} = require("./info")
+const { commandMap, supportedLanguages } = require("./instructions")
+const { createCodeFile } = require("../file-system/createCodeFile")
+const { removeCodeFile } = require("../file-system/removeCodeFile")
+const { info } = require("./info")
 
-const {spawn} = require("child_process");
+const { spawn } = require("child_process");
 
-async function runCode({language = "", code = "", input = ""}) {
+async function runCode({ language = "", code = "", input = "" }) {
     const timeout = 30;
 
     if (code === "")
@@ -20,30 +20,59 @@ async function runCode({language = "", code = "", input = ""}) {
             error: `Please enter a valid language. Check documentation for more details: https://github.com/Jaagrav/CodeX-API#readme. The languages currently supported are: ${supportedLanguages.join(', ')}.`
         }
 
-    const {jobID} = await createCodeFile(language, code);
-    const {compileCodeCommand, compilationArgs, executeCodeCommand, executionArgs, outputExt} = commandMap(jobID, language);
+    const { jobID } = await createCodeFile(language, code);
+    const { compileCodeCommand, compilationArgs, executeCodeCommand, executionArgs, outputExt } = commandMap(jobID, language);
 
-    if (compileCodeCommand) {
-        await new Promise((resolve, reject) => {
-            const compileCode = spawn(compileCodeCommand, compilationArgs || [])
-            compileCode.stderr.on('data', (error) => {
+if (compileCodeCommand) {
+    await new Promise((resolve, reject) => {
+        const compileCode = spawn(compileCodeCommand, compilationArgs || [])
+        let compileError = "";
+
+        compileCode.stderr.on('data', (data) => {
+            const msg = data.toString();
+            compileError += msg;  // Accumulate error output
+
+            if (language === 'pas' && msg.includes("link.res contains output sections")) {
+                return;
+            }
+
+            // Only reject on critical errors immediately
+            if (msg.includes("error:") || msg.includes("Error:")) {
                 reject({
                     status: 200,
                     output: '',
-                    error: error.toString(),
+                    error: compileError,
                     language
                 })
-            });
-            compileCode.on('exit', () => {
+            }
+        });
+
+        compileCode.on('close', (code) => {
+            if (code !== 0) {
+                reject({
+                    status: 200,
+                    output: '',
+                    error: compileError,
+                    language
+                })
+            } else {
                 resolve()
-            })
+            }
         })
-    }
+    })
+}
 
     const result = await new Promise((resolve, reject) => {
         const executeCode = spawn(executeCodeCommand, executionArgs || []);
         let output = "", error = "";
 
+        executeCode.on('error', (err) => {
+            reject({
+                status: 500,
+                error: `Failed to execute code: ${err.message}`
+            });
+        });
+
         const timer = setTimeout(async () => {
             executeCode.kill("SIGHUP");
 
@@ -76,7 +105,7 @@ async function runCode({language = "", code = "", input = ""}) {
 
         executeCode.on('exit', (err) => {
             clearTimeout(timer);
-            resolve({output, error});
+            resolve({ output, error });
         });
     })
 
@@ -89,4 +118,4 @@ async function runCode({language = "", code = "", input = ""}) {
     }
 }
 
-module.exports = {runCode}
+module.exports = { runCode }

src/run-code/instructions.js

@@ -1,4 +1,4 @@
-const {join} = require('path')
+const { join } = require('path')
 
 const CODES_DIR = process.env.CODES_DIR || "/tmp/codes";
 const OUTPUTS_DIR = process.env.OUTPUTS_DIR || "/tmp/outputs";
@@ -76,9 +76,21 @@ const commandMap = (jobID, language) => {
                 outputExt: 'exe',
                 compilerInfoCommand: 'mcs --version'
             }
+        case 'pas':
+            return {
+                compileCodeCommand: 'fpc',
+                compilationArgs: [
+                    `${CODES_DIR}/${jobID}.pas`,
+                    `-FE${OUTPUTS_DIR}`,  
+                    `-o${jobID}`          
+                ],
+                executeCodeCommand: `${OUTPUTS_DIR}/${jobID}`, 
+                outputExt: '', 
+                compilerInfoCommand: 'fpc -iV'
+            };
     }
 }
 
-const supportedLanguages = ['java', 'cpp', 'py', 'c', 'js', 'go', 'cs'];
+const supportedLanguages = ['java', 'cpp', 'py', 'c', 'js', 'go', 'cs','pas'];
 
-module.exports = {commandMap, supportedLanguages}
+module.exports = { commandMap, supportedLanguages }