[PD] Parsing Pd patches in Javascript, Python, Java

[Chris McCormick]

Hi Hans,

Excellent, I will put it in there. Sorry to be dense, but could you provide me
with a link to the page in this wiki you speak of? Or is that the Plone thing?

Cheers,

chris.

On Mon, Nov 29, 2010 at 10:31:32PM -0500, Hans-Christoph Steiner wrote:
>
> Sounds very useful, and would be great to have on the wiki, anywhere in 
> the docs/developer section, for example.
>
> .hc
>
> On Nov 28, 2010, at 11:46 PM, Chris McCormick wrote:
>
>> Hi,
>>
>> Here is how you can parse Pd patches into rows of atoms in three  
>> languages using regular expressions:
>>
>> /*** Javascript ***/
>>
>> 	var lines_re = new RegExp("(#((.|\r|\n)*?)[^\\\\])\r{0,1}\n{0,1}; 
>> \r{0,1}\n", "gi");
>>        for (pdline = lines_re.exec(patchtext)) {
>>                var atoms = pdline[1].split(/ |\r\n?|\n/);
>>        }
>>
>> ### Python ###
>>
>> 	lines_re = re.compile("(#(.*?)[^\\\])\r{0,1}\n{0,1};\r{0,1}\n",  
>> re.MULTILINE | re.DOTALL)
>> 	split_re = re.compile(" |\r\n?|\n", re.MULTILINE)
>> 	for found in lines_re.finditer(patch):
>> 		line = found.group(1)
>> 		atoms = split_re.split(line)
>>
>> /*** Java ***/
>>
>> 	private static final String line_re = "(#((.|\r|\n)*?)[^\\\\]) 
>> \r{0,1}\n{0,1};\r{0,1}\n";
>> 	private static final String token_re = " |\r\n?|\n";
>> 	
>> 	Pattern pattern = Pattern.compile(line_re, Pattern.MULTILINE);
>> 	Pattern token_pattern = Pattern.compile(token_re, Pattern.MULTILINE);
>> 	Matcher matcher = pattern.matcher(patchtext);
>> 	ArrayList<String[]> atomlines = new ArrayList<String[]>();
>> 	while (matcher.find()) {
>> 		String[] s = token_pattern.split(matcher.group(1));
>> 		atomlines.add(token_pattern.split(matcher.group(1)));
>> 	}
>>
>> Also here is a regular expression for matching dollar args:
>>
>> 	/(?:\\{0,1}\$)(\d+)/g;
>>
>> Hopefully this is useful to someone else.
>>
>> Cheers,
>>
>> Chris.
>>
>> -------------------
>> http://mccormick.cx
>>
>> _______________________________________________
>> Pd-list at iem.at mailing list
>> UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
>
>
>
>
>
> ----------------------------------------------------------------------------
>
> Programs should be written for people to read, and only incidentally for 
> machines to execute.
>  - from Structure and Interpretation of Computer Programs
>
>
> _______________________________________________
> Pd-list at iem.at mailing list
> UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
-------------------
http://mccormick.cx