RainerRoss / JavaScript-Minifier

JavaScript Minifier built with RPG and embedded SQL

JavaScript-Minifier

Go here to test the Google Closure Compiler.

Example Request with console.log( "Hello World" ); and HTTPPOSTCLOB using Google Closure Compiler

values SYSTOOLS.HTTPPOSTCLOB (
 'https://closure-compiler.appspot.com/compile',
 '<httpHeader>
    <header name="Content-Type" value="application/x-www-form-urlencoded"/>
  </httpHeader>',
 'compilation_level=WHITESPACE_ONLY&' concat 
 'output_format=json&' concat 
 'output_info=statistics&' concat 
 'output_info=warnings&' concat 
 'output_info=errors&' concat 
 'output_info=compiled_code&' concat 
 'js_code=' concat systools.urlencode('console.log(   "Hello World"   );','UTF-8')
);

Request Result

{
    "compiledCode": "console.log(\"Hello World\");",
    "statistics": {
        "originalSize": 46,
        "originalGzipSize": 60,
        "compressedSize": 27,
        "compressedGzipSize": 47,
        "compileTime": 0
    }
}

The RPG-program JSMinify works with the following steps

1) Load the file test.js from directory /tmp/js with get_clob_from_file()

2) URL-encode the JavaScript code with urlencode()

3) Request to the Google Closure Compiler with httppostclob()

4) Parse the result with json_table()

5) Write the result to IFS-file test_min.js