code-runner

Overview

code-runner is a command line application that reads code as a json payload from stdin – compiles and runs the code – and writes the result as json to stdout. This is used by glot-languages to run code on glot.io See the overview on how everything is connected.

Input (stdin)

The input is required to be a json object containing the properties runInstructions, files and stdin. files must be an array with at least one object containing the properties name and content. name is the name of the file and can include forward slashes to create the file in a subdirectory relative to the base directory. All files are written into the same base directory under the OS's temp dir.

Output (stdout)

The output is a json object containing the properties stdout, stderr and error. stdout and stderr is captured from the output of the ran code. error is popuplated if there is a compiler / interpreter error.

Examples

Simple example

Input

{
  "runInstructions": {
    "buildCommands": [],
    "runCommand": "python main.py"
  },
  "files": [
    {
      "name": "main.py",
      "content": "print(42)"
    }
  ],
  "stdin": null
}

Output

{
  "stdout": "42\n",
  "stderr": "",
  "error": ""
}

Read from stdin

Input

{
  "runInstructions": {
    "buildCommands": [],
    "runCommand": "python main.py"
  },
  "files": [
    {
      "name": "main.py",
      "content": "print(input('Number from stdin: '))"
    }
  ],
  "stdin": "42"
}

Output

{
  "stdout": "Number from stdin: 42\n",
  "stderr": "",
  "error": ""
}