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Re: How can I overwrite existing files with new input to running Ghostscript?.

Newsgroups comp.lang.postscript
Date 2012-12-10 07:00 -0800
References <f6b4b79d-2be2-419a-be53-630ffe54dc66@googlegroups.com> <ad22b3d0-18b1-477b-a5e4-2172c52da893@n8g2000vbb.googlegroups.com>
Message-ID <041fe8a8-8511-4ebe-9725-de32a207bf94@googlegroups.com> (permalink)
Subject Re: How can I overwrite existing files with new input to running Ghostscript?.
From Ernie Kent <ernie@erniekent.com>

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On Sunday, December 9, 2012 11:24:54 PM UTC-5, SaGS wrote:
> On Dec 9, 8:14 pm, Ernie Kent <er...@erniekent.com> wrote:
> 
> > I need Ghostscript to repeatedly write small, jpg images rapidly to the same file
> 
> > from PS or EPS input on STDIN. Once Ghostscript is up and running it takes an
> 
> > acceptable time to create my images. However, to repeatedly start Ghostscript and
> 
> > have it do the same job, quit and restart again is taking too long.
> 
> 
> 
> A way to do it: for each file do a "save", setup and install the
> 
> output device, run the input PS file, "restore".
> 
> 
> 
> For the "setup and install the output device" step you need some GS-
> 
> specific operators. Look into Ghostscript's Language.htm for
> 
> "findprotodevice", "copydevice", "putdeviceprops", and
> 
> "setdevice" (call them in this order, with appropriate parameters).
> 
> 
> 
> > ...
> 
> > The -dJOBSERVER switch looks like it should do something like the desired operation
> 
> > but I can't get it to.
> 
> > ...
> 
> 
> 
> I think -dJOBSERVER does not work because you want the same output
> 
> filename. The device does not change, so GS does not close the old
> 
> device (so no finishing/ closing of the output file) and create a new
> 
> one.

Thanks, I'm investigating this.

Ernie

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Thread

How can I overwrite existing files with new input to running Ghostscript?. Ernie Kent <ernie@erniekent.com> - 2012-12-09 10:14 -0800
  Re: How can I overwrite existing files with new input to running Ghostscript?. Helge Blischke <h.blischke@acm.org> - 2012-12-09 22:13 +0100
    Re: How can I overwrite existing files with new input to running Ghostscript?. Ernie Kent <ernie@erniekent.com> - 2012-12-09 13:52 -0800
      Re: How can I overwrite existing files with new input to running Ghostscript?. "luser.droog" <luser.droog@gmail.com> - 2012-12-09 18:28 -0600
        Re: How can I overwrite existing files with new input to running Ghostscript?. Ernie Kent <ernie@erniekent.com> - 2012-12-09 17:11 -0800
  Re: How can I overwrite existing files with new input to running Ghostscript?. SaGS <sags5495@gmail.com> - 2012-12-09 20:24 -0800
    Re: How can I overwrite existing files with new input to running Ghostscript?. Ernie Kent <ernie@erniekent.com> - 2012-12-10 07:00 -0800
      Re: How can I overwrite existing files with new input to running Ghostscript?. Ernie Kent <ernie@erniekent.com> - 2012-12-10 12:39 -0800
        Re: How can I overwrite existing files with new input to running Ghostscript?. Chris <cjl@spamcop.net> - 2012-12-11 10:12 +0000
          Re: How can I overwrite existing files with new input to running Ghostscript?. Ernie Kent <ernie@erniekent.com> - 2012-12-11 11:04 -0800
            Re: How can I overwrite existing files with new input to running Ghostscript?. Chris <cjl@spamcop.net> - 2012-12-12 07:41 +0000
              Re: How can I overwrite existing files with new input to running Ghostscript?. SaGS <sags5495@gmail.com> - 2012-12-12 03:52 -0800
                Re: How can I overwrite existing files with new input to running Ghostscript?. Chris <cjl@spamcop.net> - 2012-12-12 12:52 +0000
                Re: How can I overwrite existing files with new input to running Ghostscript?. Ernie Kent <ernie@erniekent.com> - 2012-12-12 08:45 -0800
                Re: How can I overwrite existing files with new input to running Ghostscript?. Chris <cjl@spamcop.net> - 2012-12-13 14:07 +0000
        Re: How can I overwrite existing files with new input to running Ghostscript?. SaGS <sags5495@gmail.com> - 2012-12-11 02:44 -0800
          Re: How can I overwrite existing files with new input to running Ghostscript?. Ernie Kent <ernie@erniekent.com> - 2012-12-11 11:05 -0800
          Re: How can I overwrite existing files with new input to running Ghostscript?. Ernie Kent <ernie@erniekent.com> - 2012-12-11 12:37 -0800
          Re: How can I overwrite existing files with new input to running Ghostscript?. Ernie Kent <ernie@erniekent.com> - 2012-12-21 21:40 -0800
            Re: How can I overwrite existing files with new input to running Ghostscript?. SaGS <sags5495@gmail.com> - 2012-12-22 00:53 -0800
              Re: How can I overwrite existing files with new input to running Ghostscript?. Ernie Kent <ernie@erniekent.com> - 2012-12-22 09:00 -0800
                Re: How can I overwrite existing files with new input to running Ghostscript?. Ernie Kent <ernie@erniekent.com> - 2012-12-22 19:37 -0800
                Re: How can I overwrite existing files with new input to running Ghostscript?. Chris <cjl@spamcop.net> - 2012-12-23 17:16 +0000
                Re: How can I overwrite existing files with new input to running Ghostscript?. SaGS <sags5495@gmail.com> - 2012-12-23 10:16 -0800
                Re: How can I overwrite existing files with new input to running Ghostscript?. luser- -droog <mijoryx@yahoo.com> - 2012-12-24 19:37 -0800

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