Yes, I want upgrade it to streams2. Alternatively there should already be some way to compose proper stream2 duplex stream using existing Dominic Tarr modules (duplex/mux-demux/event-stream etc)
On Friday, 14 June 2013 16:19:14 UTC+10, Marco Rogers wrote: > > > > > On Thu, Jun 13, 2013 at 11:14 PM, Andrey <[email protected]<javascript:> > > wrote: > >> You can use https://github.com/sidorares/exec-stream >> >> var es = require('exec_stream'); var convert = es('imagemagick', >> ['options']); rs.pipe(convert).pipe(ws); >> >> >> > This looks great. Do you have plans to upgrade it with the latest APIs? > It's not obvious, but it will pay to support the updated streams. Using the > base classes like I've done in my example gets you all the goodness minimal > less fuss. Wrap it in your nice module and it's a one-stop solution. > > :Marco > > >> >> On Friday, 14 June 2013 11:23:08 UTC+10, ryandesign wrote: >>> >>> I understand that a process that I spawn with require('child_process').* >>> *spawn() *has* three streams: stdin, stdout, stderr. >>> >>> http://nodejs.org/api/child_**process.html#child_process_** >>> child_process_spawn_command_**args_options<http://nodejs.org/api/child_process.html#child_process_child_process_spawn_command_args_options> >>> >>> >>> But I've now read about require('stream').Transform and it feels like >>> for certain types of programs (compression programs like bzip2 or image >>> conversion programs like ImageMagick) I would want the spawned process to >>> *be* a stream -- a transform stream. >>> >>> http://nodejs.org/api/stream.**html#stream_class_stream_**transform<http://nodejs.org/api/stream.html#stream_class_stream_transform> >>> >>> >>> I've tried to find examples of how to wrap a spawned child process in a >>> transform stream, and I haven't found any, which makes me think I'm going >>> about this the wrong way. >>> >>> I want to be able to do something like this: >>> >>> var rs; // a readable stream, maybe a file >>> var ws; // a writable stream, maybe an http response >>> var convert; // a transform stream that uses ImageMagick's convert >>> program >>> rs.pipe(convert).pipe(ws); >>> >>> Am I wrong to want this? >>> If not, how to I do this? >>> >>> -- >> -- >> Job Board: http://jobs.nodejs.org/ >> Posting guidelines: >> https://github.com/joyent/node/wiki/Mailing-List-Posting-Guidelines >> You received this message because you are subscribed to the Google >> Groups "nodejs" group. >> To post to this group, send email to [email protected]<javascript:> >> To unsubscribe from this group, send email to >> [email protected] <javascript:> >> For more options, visit this group at >> http://groups.google.com/group/nodejs?hl=en?hl=en >> >> --- >> You received this message because you are subscribed to a topic in the >> Google Groups "nodejs" group. >> To unsubscribe from this topic, visit >> https://groups.google.com/d/topic/nodejs/sbvdxC6i5Yw/unsubscribe. >> To unsubscribe from this group and all its topics, send an email to >> [email protected] <javascript:>. >> For more options, visit https://groups.google.com/groups/opt_out. >> >> >> > > > > -- > Marco Rogers > [email protected] <javascript:> | https://twitter.com/polotek > > Life is ten percent what happens to you and ninety percent how you respond > to it. > - Lou Holtz > -- -- Job Board: http://jobs.nodejs.org/ Posting guidelines: https://github.com/joyent/node/wiki/Mailing-List-Posting-Guidelines You received this message because you are subscribed to the Google Groups "nodejs" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/nodejs?hl=en?hl=en --- You received this message because you are subscribed to the Google Groups "nodejs" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
