[Printing-architecture] [Printing-summit] OPS Preparation minutes (28 March 2012)
Michael Sweet
msweet at apple.com
Thu Mar 29 16:03:07 UTC 2012
Ira,
Internal/private APIs are often coded with a leading underscore, e.g. "_opjtInternalFunction". Functions with a leading underscore are typically not exported by default (a nice side-effect).
On Mar 29, 2012, at 5:29 AM, Ira McDonald wrote:
> Hi Daniel,
>
> Yes, any globally scoped function or variable is a potential
> source of collision.
>
> A specific instance - a printer manufacturer might link JTAPI
> into their implementation of IPP or PWG SM Print (over SOAP).
> In that case, we have to be concerned that their original source
> code may not always have used good programming practice
> with scoping prefixes.
>
> For internal functions that are globally scoped, I suggest that
> a distinct prefix such as "opjtint" would be good for readability
> and to clarify that the given function/variable is NOT intended
> to be used by the application integrator.
>
> Glen - WDYT?
>
> Cheers,
> - Ira
>
>
>
> Ira McDonald (Musician / Software Architect)
> Chair - Linux Foundation Open Printing WG
> Secretary - IEEE-ISTO Printer Working Group
> Co-Chair - IEEE-ISTO PWG IPP WG
> Co-Chair - TCG Trusted Mobility Solutions WG
> Chair - TCG Embedded Systems Hardcopy SG
> IETF Designated Expert - IPP & Printer MIB
> Blue Roof Music/High North Inc
> http://sites.google.com/site/blueroofmusic
> http://sites.google.com/site/highnorthinc
> mailto:blueroofmusic at gmail.com
> Winter 579 Park Place Saline, MI 48176 734-944-0094
> Summer PO Box 221 Grand Marais, MI 49839 906-494-2434
>
>
>
> On Thu, Mar 29, 2012 at 12:29 AM, Daniel Dressler <danieru.dressler at gmail.com> wrote:
> Thank you Ira
>
> Is it correct that I have to worry about all globally scoped things that will get linked in the library user's program(which would be everything)? So for instance will the internal functions require a prefix?
>
> I think opjt would be equally nice, is that a possible prefixy?
>
> Daniel
>
> 2012年3月28日22:17 Ira McDonald <blueroofmusic at gmail.com>:
>
> Hi Daniel,
>
> Comments inline below.
>
> Cheers,
> - Ira
>
>
> On Wed, Mar 28, 2012 at 7:09 PM, Daniel Dressler <danieru.dressler at gmail.com> wrote:
> In response to some comments in the meeting.
>
> 1. I would prefer an 'op' prefix to 'fsgjt'. I assume fsgjt means free standards group job ticket? Since the fsg does not exist anymore I think 'op' would avoid confusion. And it is shorter.
>
> Do we know of any namespace conflicts with other op libraries? It's been 5+ years, has this situation changed?
>
> <ira>
> The Open Printing Vector API uses 'opvp' as prefix throughout.
> It's sloppy and amateur coding practice not to use a library specific unique prefix (e.g., 'opjt') for variables and functions.
>
> The scope is NOT just OP libraries, but the entire universe of
> code that might be linked into a vendor or third-party tool.
> </ira>
>
> 2. I will be attending as much of the summit as I can by phone-in, the summit takes place over my finals so I will be missing some sessions.
>
> <ira>
> Understood - we'll be glad to have you when you can attend.
> </ira>
>
> 3. If the wiki has no history does that mean it is pointless for me to fill in the change log when making edits?
>
> <ira>
> Till can hopefully answer this one - we're not any of us happy
> about the move from a full-function Wiki tool to a limited Wiki
> tool by the Linux Foundation.
> </ira>
>
> Daniel
>
> 2012年3月28日13:38 Ira McDonald <blueroofmusic at gmail.com>:
> Hi,
>
> Minutes from today's Open Printing Summit planning call are posted at:
>
> ftp://ftp.pwg.org/pub/pwg/openprinting/minutes/OP-Summit-Prep-20120328.htm
>
> Note: New FTP directory - see above
>
> - ACTION - Till - contact Linux Foundation about Glen/Hin-Tak updates
> to GSoC projects - no website fall-backs allowed until late April
> - OPEN
>
> - ACTION - Till - contact Ghostscript and other color management folks
> as presenters (or send slides?)
> - Michael Vrhel (Artifex, Ghostscript) will attend OPS
> - OPEN
>
> - ACTION - All - Draft presentation slides/outlines for review 11 April
> - OPEN
>
> - ACTION - Presenters - tell Till EARLY about any special requirements
> (e.g., speakers for video, demo printers, etc.)
> - OPEN
>
> - ACTION - Presenters - send PDF slides to Till EARLY (or upload to OP)
> (so that participants can download slides as backup for screencast)
> - OPEN
>
> - ACTION - Ira - draft slides for OP Plenary by 11 April
> - OPEN
>
> Next OP Conference Calls:
> (1) April 2012 - OPS Preparation
> - Note - US Daylight Savings Time started on Sunday 11 March 2012
> - Note - Europe Summer Time started on Sunday 25 March 2012
>
> - Wednesday 11 April 2012, Daytime
> - US
> 9am in San Francisco - US PDT (Pacific Daylight Time)
> 10am in Colorado - US MDT (Mountain Daylight Time)
> 11am in Chicago - US CDT (Central Daylight Time)
> 12pm in New York - US EDT (Eastern Daylight Time)
> - Europe
> 6pm in Berlin - CEST (Central European Summer Time)
>
> * Main Number (Till Kamppeter, LF, leader)
> International: +1-218-936-7999
> Access Code: 491659#
>
> (2) April 2012 - Joint PWG / Open Printing Summit
> - Note - OPS is NOT hosted by Linux Foundation Collaboration Summit
>
> - Tuesday to Friday 24-27 April 2012 at Apple in Cupertino, CA
> - US
> 9am in San Francisco - US PDT (Pacific Daylight Time)
> 10am in Colorado - US MDT (Mountain Daylight Time)
> 11am in Chicago - US CDT (Central Daylight Time)
> 12pm in New York - US EDT (Eastern Daylight Time)
> - Europe
> 6pm in Berlin - CEST (Central European Summer Time)
>
> * Main PWG Number (Mike Sweet, Apple, leader)
> US Toll-Free: +1-866-469-3239
> International: +1-650-429-3300
> Access Code: By request to Ira McDonald (do NOT publish)
>
> (3) May 2012 - US/Europe - OP Monthly Meeting
> - Note - Joint PWG/OPS is 24-27 April at Apple in Cupertino, CA
> - Note - Ubuntu Developer Summit is 7-11 May in Oakland, CA
> - Note - Ira has a conflict on 16 May
>
> - Wednesday 23 May 2012, Daytime
> - US
> 9am in San Francisco - US PDT (Pacific Daylight Time)
> 10am in Colorado - US MDT (Mountain Daylight Time)
> 11am in Chicago - US CDT (Central Daylight Time)
> 12pm in New York - US EDT (Eastern Daylight Time)
> - Europe
> 6pm in Berlin - CEST (Central European Summer Time)
>
> * Main Number (Till Kamppeter, LF, leader)
> International: +1-218-936-7999
> Access Code: 491659#
>
> Cheers,
> - Ira
>
> Ira McDonald (Musician / Software Architect)
> Chair - Linux Foundation Open Printing WG
> Secretary - IEEE-ISTO Printer Working Group
> Co-Chair - IEEE-ISTO PWG IPP WG
> Co-Chair - TCG Trusted Mobility Solutions WG
> Chair - TCG Embedded Systems Hardcopy SG
> IETF Designated Expert - IPP & Printer MIB
> Blue Roof Music/High North Inc
> http://sites.google.com/site/blueroofmusic
> http://sites.google.com/site/highnorthinc
> mailto:blueroofmusic at gmail.com
> Winter 579 Park Place Saline, MI 48176 734-944-0094
> Summer PO Box 221 Grand Marais, MI 49839 906-494-2434
>
>
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>
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>
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_________________________________________________________
Michael Sweet, Senior Printing System Engineer, PWG Chair
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