Pike-devel October 2007

pike-devel@lists.lysator.liu.se

3 participants
19 discussions

Process.run
by Peter Bortas (nu med mindre Opera) ＠ Pike (-) developers forum 15 Jul '08

15 Jul '08

I just checked in a Process.run() in 7.7: http://pike.ida.liu.se/development/cvs/diff.xml?module=Pike&file=7.7/lib/mo… The rational for that is that I was once again reminded by a user this week that getting Process.create_process() or Process.Process right without some corner case blocking is hard. It's not obvious that if you bind pipes to booth stderr and stdout you have to take in to account that OS buffers are not limetless. Process.run() is a thin wrapper around Process.Process that collects stdout, stderr and exitcode and return them in a mapping. This could potentially result in huge strings, but will do what most users want and even already do when they call create_process() with both pipes bound. Something like this should be in 7.8, but I'm open to suggestions for other things that might be usefull to return in the mapping or for changing member names.

5 7

Getopt mark II
by Martin Nilsson (Opera Mini - AFK!) ＠ Pike (-) developers forum 19 Apr '08

19 Apr '08

(or rather Getopt mark III, since I've already rewritten the current one, although no functionality was changed then) I've been working a bit on a new Argument parser, and would like some input. In reality there will be two different way of using the argument parser, which really doesn't share any code but is convenient to do at the same time. The first one is a "I just want to get this over with" kind of interface: void main(int num, array argv) { mapping args = Arg.parse(argv); argv = args[Arg.REST]; } The output will contain ([ "foo":1 ]) if the argument is --foo and ([ "foo":"bar" ]) if the argument is --foo=bar. There is no fancy stuff to handle default values (just or it with another mapping) or options that may or may not have values (e.g. -bar=foo will produce ([ "b":1, "a":1, "r":"foo" ]) and --foo x --bar will just produce ([ "foo":1 ]) and then stop processing the line). The other mode is the (supposedly) easy yet powerful mode that you would use for more mature applications. class Parser { inherit Arg.Options; Arg verbose = NoArg("-v")|NoArg("--verbose")|Env("VERBOSE"); Arg level = HasArg("-l")|HasArg("--level"); } void main(int n, array argv) { Parser p = Parser(argv); // Index magic. Some like it, some not so much. if( p->verbose ) werror("Level %s\n", p->level); } Which is extended in class Parser { // The name for now. inherit Arg.OptionsSupreme; Arg verbose = NoArg("-v")|NoArg("--verbose")|Env("VERBOSE"); // These are used in the automatically generated --help response. string help_pre = "This program is like awesum."; string verbose_help = "Increases the verbosity of the program."; // Called when/if verbose is set to a value. void verbose_cb(string arg) { werror("Verbosity is on.\n"); } } Does this match the long list of requirements that I've heard from others?

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pike-svn repo import into git
by Martin Bähr 23 Feb '08

23 Feb '08

hi, importing the pike-svn repo into git took 3 days. git-svn seems to have some issues there, as the process got slower and slower (and in the end git-svn had more than 300MB in ram (allocated 1GB)) the resulting repo had 178645 objects and a size of 1178MB. git-svn allocates another 1.5GB for statusinformation on each branch. (and because tags are branches, the 1729 tags result in as many branches) however, after packing, the resulting repo ocupies a mere 44MB!!! that alone is a good reason for me to use git, as it it gives me the whole repo in the same space as the checkout of a single revision in svn. you can clone this repo from http://www.iaeste.at/~mbaehr/pike-svn.git the svn import info is removed from that repo. when we switch to svn i'll try to make a repo available that contains the svn info to spare anyone else who wants ot use git-svn a 3day import. greetings, martin.

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master()->fc
by Marcus Comstedt (ACROSS) (Hail Ilpalazzo!) ＠ Pike (-) developers forum 13 Nov '07

13 Nov '07

What's the semantics of the indices in the mapping "fc" in the master? dirnodes insert themselves twice in this mapping, once with ".pmod" on the end and one without, meaning that rev_fc will randomly contain one of these names. However, findmodule() will only accept the version without ".pmod" if the module is not already in fc. This breaks dumping of the Charset module. It seems to me that dirnodes should only insert the name without ".pmod" into fc, is there some special reason why it is inserted twice now?

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codec and Calendar
by H. William Welliver III 16 Oct '07

16 Oct '07

I was thinking it'd be nice to be able to (en|de)code Calendar objects, but sadly, that doesn't appear to be possible: int main() { object x = Calendar.Second(); string y = encode_value(x); werror("%O\n", x); sleep(3); werror("%O\n", decode_value(y)); return 0; } Cannot find Second(Thu 4 Oct 2007 8:40:34 EDT) in ISO. /usr/local/pike/7.7.34/lib/master.pike:4118: master()->find_index (ISO,Second(Thu 4 Oct 2007 8:40:34 EDT),UNDEFINED) /usr/local/pike/7.7.34/lib/master.pike:4311: master()->nameof (@0=Second(Thu 4 Oct 2007 8:40:34 EDT),UNDEFINED) test.pike:4: /main()->main() Now, I'm pretty sure that Calendar.ISO.Second exists, but I know there's a lot of black magic in the Calendar module, so I'm not even sure where to begin. Anyone have any suggestions? Bill

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pike repo imported into git revision control system
by Martin Bähr 13 Oct '07

13 Oct '07

hi, since i recently got the opportunity to start using git for a project, i tried to import the pike repository into git too. the initial result can be seen here: http://www.iaeste.at/~mbaehr/pike.git this tree is an attempt to reconstruct the history of the main branches (0.5, 0.6, 0.7/7.0, 7.2, 7.4, 7.6 and 7.7) it does not (yet) contain the extra branches. when recontructing the branches i noticed a problem with the various branches in cvs missing files. ie, the contents at the tag pre75to767split should be identical for Pike/7.6 and Pike/7.7 but they are not. this happens in all branches, after the split, some files seem to have gotten lost. i am not yet sure what the best way is to fix this. maybe copying the file from the branch that still has it into the branch where it is missing, and then redoing the import based on that, not sure... anyways, take a look, and let me know what you think. greetings, martin.

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Re: objc
by Marcus Comstedt (ACROSS) (Hail Ilpalazzo!) ＠ Pike (-) developers forum 09 Oct '07

09 Oct '07

>It seems so odd that the libFoundation folks would go down their own >path wrt exception handling. Effectively, they've created a third, >incompatible way of doing things. Grumble. Yeah. Maybe they're aiming for a solution that works with old objc implementations, such as the original frontend by Brad Cox, which do not have @throw (that syntax was invented about 7 years after the main language itself)... >I was wondering if I can install libfoundation next to the Apple >runtime stuff. It's probably too much to expect that would be >possible. Perhaps I need to get a virtual machine set up just for this. It should be possible to install it under a different prefix, if it works under MacOS at all. >> Needs some ISO standardization methinks... > >I wonder if that'd be better or worse... you'd likely end up with 1 >spec that specifies all the various behaviors :O At least that would mean you could find all of them in one place.

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Re: objc
by Marcus Comstedt (ACROSS) (Hail Ilpalazzo!) ＠ Pike (-) developers forum 09 Oct '07

09 Oct '07

The reason that there is a conflict between libobjc and libFoundation is that libFoundation depends on its own implementation "libobjc.so.lf2" (lf = libFoundation). Why libFoundation can't use the regular libobjc, or why the special lf version don't work as a drop-in replacement, I don't know.

2 4

Re: objc
by Marcus Comstedt (ACROSS) (Hail Ilpalazzo!) ＠ Pike (-) developers forum 08 Oct '07

08 Oct '07

>Right, I understand that, but it's a bit like saying "I want to use >C, but not the standard C library." The Foundation framework is the >basic equivalent of the C library, without it, you can't do anything. No, it's not. The standard C library is specified by the C language specification. Foundation is not specified by the objC language specification, it's specified by NextStep. It's more like saying "I want to use C, but not glib".

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Re: objc
by Marcus Comstedt (ACROSS) (Hail Ilpalazzo!) ＠ Pike (-) developers forum 08 Oct '07

08 Oct '07

Linking with -objc solved that, but now I got a warning: /usr/bin/ld: warning: libobjc.so.lf2, needed by /usr/lib/gcc/powerpc-linux-gnu/4.1.3/../../../../lib/libFoundation.so, may conflict with libobjc.so.1 Perhaps this can be fixed by removing the dependency on libFoundation? Also, running the program does not work: You must call +[NSProcessInfo initializeWithArguments:count:environment:] in main() (Again this is caused by libFoundation, I think.)

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Pike-devel October 2007