Pike-devel April 2007

pike-devel@lists.lysator.liu.se

3 participants
20 discussions

negative indices in array ranges
by Martin Baehr 14 Aug '26

14 Aug '26

hi, instead of having to do: reverse(reverse(foo/"/")[1..]); i'd very much prefer: (foo/"/")[..-2]; are there any reasons that speak against supporting this other than me not being able to offer a patch? greetings, martin.

13 51

negative indices in array ranges
by Mirar ＠ Pike developers forum 14 Aug '26

14 Aug '26

levels might possibly be from -1 and up, -1 meaning infinite.

10 25

managing comport settings in linux
by Henrik Grubbstr�m (Lysator) ＠ Pike (-) developers forum 10 Apr '26

10 Apr '26

Not a good idea; the design philosophy of Pike is that Pike-level code should never be able to cause memory corruption at C-level. With ioctls there's no way to know what data a specific ioctl wants without reading the documentation for that specific ioctl for that specific OS. ioctls and fcntls are a way for device handlers to hook in APIs that aren't standard across all filedescriptors. / Henrik Grubbström (Lysator) Previous text: >2004-08-17 13:32: >Subject: managing comport settings in linux >-------------------------------------------------------------------- >What would be nice, is a way to define ioctl methods in >Pike. Perhaps something like > >object i = Stdio.IOCTL(4242 /* request_id */ ); >i->add_int_parameter(); >i->add_string_parameter(); >i->set_return_type(STRING); > >string ret = i(fd, 1, "somestring"); > > >That ought to be possible, or..? > > / Marcus Agehall (PacketFront) >

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Re: Playing music using pike and SDL.
by Martin Nilsson (lvl 60) ＠ Pike (-) developers forum 13 Mar '26

13 Mar '26

Were you not able to get any C code to play through SDL either? Does your SDL library have a mixer compiled in it (I think it is optional)?

5 4

full MySQL 4.x support. or pike roadmap
by thomas.gusenleitner＠com-bet.com ＠ Pike developers forum 01 Mar '26

01 Mar '26

HI to all! mysql 4.x support works only with a mysql CFLAGS=-DUSE_OLD_FUNCTIONS is this correct ? are there plans to make a full 4.x support ? bye, thomas

4 4

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

error: `LIBS' was not set in the previous run
by Marcus Comstedt (ACROSS) (Hail Ilpalazzo!) ＠ Pike (-) developers forum 30 Jul '07

30 Jul '07

Has anyone else seen this problem? When building current 7.7 from scratch, it bombs out during the configuration of CommonLog: configure: loading cache ../.././config.cache configure: error: `LIBS' was not set in the previous run configure: error: changes in the environment can compromise the build In config.cache there is the following: ac_cv_env_LIBS_set= ac_cv_env_LIBS_value= (these are the only ac_env/ac_cv_env entries). Maybe this is related to the line LIBS= in PIKE_RETAIN_VARIABLES somehow? Interestingly enough, the problem does not occur on my PS3, which also has ac_cv_env_LIBS_set= ac_cv_env_LIBS_value= in config.cache...

3 8

Attributed types
by Henrik Grubbstr�m (Lysator) ＠ Pike (-) developers forum 02 May '07

02 May '07

As you all probably know, I've been tinkering with the type system in Pike 7.7 for a while now, and I've now reached the point of implementing attributed types. The question once again is "which syntax do you prefer?": GCC-style: void __attribute(noreturn) error(string msg); string werror(string __attribute(sprintf_format) fmt, mixed __attribute(sprintf_args) args); or (analogous with other pike types): __attribute(noreturn, void) throw(mixed); string werror(__attribute(sprintf_format, string) fmt, __attribute(sprintf_args, mixed) args);

4 6

Re: Returning 0 vs throwing errors in Stdio
by Mirar ＠ Pike developers forum 28 Apr '07

28 Apr '07

The main reason for this is that Pike has a very small user base, and invalidating lots of old code might mean that it will never work again, and it will scare away lots of people from Pike. Especially if the change is between 7.6 and a future 7.8.

4 5

Returning 0 vs throwing errors in Stdio
by Peter Bortas ＠ Pike developers forum 27 Apr '07

27 Apr '07

I'd like someone to expand on the advantages of the following change in 7.7: > o Stdio > The functions read_file(), read_bytes(), write_file() and > append_file() now always throw errors upon errors, to allow easier > use as errno doesn't have to be checked. read_file() and > read_bytes() still returns 0 if the file does not exists. Specificly for read_file() on files you lack permissions for. > Stdio.read_file("/etc/shadow"); (1) Result: 0 vs > Stdio.read_file("/etc/shadow"); Failed to open "/etc/shadow": Permission denied /pkg/pike/intel-debian3_1/7.7.13/pike/7.7.13/lib/modules/Stdio.pmod/module.pmod:1820: Stdio->read_file("/etc/shadow",UNDEFINED,UNDEFINED) As I see it it only makes it harder to properly handle errors. If Pike had a well developed system for handling errors it would be an improvement, but now it's only going to lead to more and buggier code. Unless someone can come up with a good explanation* for why it should be changed it should be reverted. * Like for example "I've extended and documented the error classes. It's obvious and clear how to use them now!". That'd be nice.

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Pike-devel April 2007