StackOverflowError on POST with large json data about curl

[antracs99]

private static String [] getArgsFromCommand (final String requestCommandWithoutBasename) {
final String requestCommandInput = requestCommandWithoutBasename.replaceAll ("\s+-([a-zA-Z0-9])", " -$1 ");
final Matcher matcher = Arguments.ARGS_SPLIT_REGEX.matcher (requestCommandInput);
final List args = new ArrayList<> ();
while (matcher.find ()) {
args.add (ReadArguments.removeSlashes (matcher.group (1).trim ()));
}
return args.toArray (new String [args.size ()]);
}

the regex is ARGS_SPLIT_REGEX is very complex and has to be simplified.
Pattern.compile(expression) creates a method that is executed recursively on matcher.find()

Check this article:
https://www.javaworld.com/article/2077757/core-java/optimizing-regular-expressions-in-java.html?page=4

"A note about the StackOverflowError"

[libetl]

Hi,
I tried to reproduce the flexible parsing that is available under curl+bash :

https://regex101.com/r/B5Rga8/16/tests

Can you try optimizing that regex for me ?
The unit tests in this example should continue to work

[antracs99]

unfortunately I am not an regex expert, that's why i found an workaround to that problem:
curl -X POST "http://localhost:9200/default_ddcm/ApplicationProfile/m683592e896e4d32b086c3468252fe55/_update" -H 'Content-Type: application/json' --data-binary @path/to/the/payload,json

and now the regex is applied to a simple data source

[libetl]

I did not dare to ask you to isolate the request body in a file because you could have some good reasons not to do that, but that is definitely something you can do.

Thanks for the feedback and good luck.