Failure to parse location directive with character group with ' or "

[sebkur]

I'm parsing a bunch of real world nginx configs and am encountering parsing failure if a character group in a location contains single and/or double quotes as characters. Probably they are treated in a special way in the grammar but I haven't figured it out yet how to fix it.

Here's a small self-contained example:

public class Test
{

	public static void main(String[] args) throws IOException
	{
		String cfg = "server {\n" + //
				"  listen 80;\n" + //
				"  location ~ ^/([^/?&:']+)/ {\n" + //
				"  }\n" + //
				"}";

		NgxConfig.read(new ByteArrayInputStream(cfg.getBytes()));
	}

}

Output:

line 3:22 token recognition error at: '']+)/ {\n  }\n}'
line 3:15 mismatched input '(' expecting '{'

The same thing happens with double quotes:

public class Test
{

	public static void main(String[] args) throws IOException
	{
		String cfg = "server {\n" + //
				"  listen 80;\n" + //
				"  location ~ ^/([^/?&:\"]+)/ {\n" + //
				"  }\n" + //
				"}";

		NgxConfig.read(new ByteArrayInputStream(cfg.getBytes()));
	}

}

Output:

line 3:22 token recognition error at: '"]+)/ {\n  }\n}'
line 3:15 mismatched input '(' expecting '{'

Here are the config files as plain text, so that they can be used as test cases. It also makes sense to have a test case with both single and double quotes:

server {
  listen 80;
  location ~ ^/([^/?&:']+)/ {
  }
}

server {
  listen 80;
  location ~ ^/([^/?&:"]+)/ {
  }
}

server {
  listen 80;
  location ~ ^/([^/?&:'"]+)/ {
  }
}