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3044 discussions

How to write utf-8 string to console?
by 墳墓 13 Aug '05

13 Aug '05

I'm trying to parse a XML file with UTF-8 encoded, I have figure out how to use Parser.XML module and it works fine. But there is a problem, I can't write the UTF-8 string I read from the file, but I could use GTK2 module to display those string. When I tried use write() to let it display on console, Pike compilan: ================================================= Stdio.File->write(): cannot output wide strings. _static_modules.files()->Fd: Fd(1)->write("\110112\61062\n") aa.pike:21: /home/brianhsu/aa()->main() ================================================= And when I use those string at the GTK2.Lable->create() , it also says : ================================================= Bad argument 1 to create(). Expected string (8bit). ================================================= But I can first create an empty label, then use set_text() to set the conent of the label. Where should I check my code? My XML file: http://stu.im.ncnu.edu.tw/~brianhsu/test.xml Here is my code,I commemted out the code that have these problem. ================================================= import Parser.XML; int main () { string xml = Stdio.read_file ( "test.xml" ); Tree.Node root = Tree.parse_input ( xml ); string test = root->get_children()[1]->get_tag_name(); GTK2.gtk_init(); GTK2.Window win = GTK2.Window( GTK2.WINDOW_TOPLEVEL ); win->set_default_size ( 320 , 240 ); // Faild //GTK2.Label lab = GTK2.Label ( test ); // Faild //write ( test + "\n" ); GTK2.Label lab = GTK2.Label ( "" ); lab->set_text ( test ); win->set_title ( test ); win->add ( lab ); win->show_all(); return -1; } =================================================== -- ~ 白馬帶著她一步步地回到中原。白馬已經老了，只能慢慢地走， 'v' Brian Hsu 但終是能回到中原的。江南有楊柳、桃花，有燕子、金魚…… // \\ ( 墳墓 ) /( )\ 但這個美麗的姑娘就像古高昌國人那樣固執。【白馬嘯西風】 ^`~'^ http://bone.twbbs.org.tw 『那都是很好很好的，可我偏不喜歡。』

1 1

pike reserved keywords
by Martin Bähr 12 Aug '05

12 Aug '05

hi, trying to make a complete list of reserved words in pike. i found all of these in language.yacc, and i hope the list is complete. they are grouped loosly by type, with each line representing a subgroup based on a gut feeling. i would appreciate any suggestions for better categorization, and expecially any explanations of what the keywords in the last two groups do. types: array mapping multiset object function program string float int void mixed related to types: constant enum typedef flow control: if do for while else foreach case switch break continue return special "functions": sscanf typeof special blocks: catch gauge class lambda don't know how to name that group: import inherit class access: final static private local public protected i don't know what these do, but they seem to belong to class access: nomask inline extern optional variant i have no clue what these are: default predef global

6 8

type incompatibilities in connection with inheritance?
by Martin Bähr 11 Aug '05

11 Aug '05

hi, the tutorial makes this mysterious claim: http://pike.ida.liu.se/docs/tutorial/oop/access_control.xml If a class has a constructor (that is, a method called create) it can be a good idea to declare it static. It is not supposed to be called except during the construction of the object, and if it is not static there may be some type incompatibilities in connection with inheritance. what exactly is that supposed to mean? i understand the use of static to protect create from access from the outside, but what kind of type incompatibilities can there be for inheritance? and how can static protect against them? greetings, martin.

3 5

module can change mappings and multisets but not arrays or other types?
by Martin Bähr 08 Aug '05

08 Aug '05

hi, while playing around with modules, i observed the following: variables in modules are readonly, when accesses directly, and trying to change them from the outside gives an error. however trying to change then from the inside is either silently ignored or succeeds: int i=7; string s="foo"; mapping dict = ([ "foo":8 ]); array list = ({ 5 }); multiset mset = (< "foo" >); void set(mixed var) { // ignored: i=(int)var; s[0]=((string)var)[0]; dict += ([ "baz":var ]); list +=({ var }); list[0] = (int)var; // succeeds: dict->foo=var; dict->bar=var; mset[var] = 1; mset += (< var >); } shouldn't all of them fail and produce an error? greetings, martin.

7 12

GTK.DrawingArea won't work.
by 墳墓 07 Aug '05

07 Aug '05

I'm trying to develope my application with Pike and GTK, but when I used GTK.DrawingArea to draw a line, it doesn't work. I'm not sure if I misused GTK.DrawingArea, because I can't find example program that also use DrawingArea Error message and my code listed below, any suggestion? It says: Gdk-CRITICAL **: file gdkgc.c: line 51 (gdk_gc_new_with_values): assertion `window != NULL' failed. Gdk-CRITICAL **: file gdkgc.c: line 456 (gdk_gc_set_foreground): assertion `gc != NULL' failed. Gdk-CRITICAL **: file gdkdraw.c: line 65 (gdk_draw_line): assertion `drawable != NULL' failed. Here is my code: #!/usr/bin/pike int main () { GTK.setup_gtk(); GTK.Window MainWin = 0; GTK.Widget w = GTK.DrawingArea()->set_usize(100,100); GDK.GC gc = GDK.GC(w)->set_foreground( GDK.Color(255,0,0) ); w->draw_line ( gc , 10 , 10 , 100 , 100 ); MainWin = GTK.Window ( GTK.WINDOW_TOPLEVEL ); MainWin->set_title ( "Testing" ); MainWin->add ( w ); MainWin->show_all(); GTK.main(); return 0; }

2 2

http://pike.ida.liu.se/ down?
by Martin Bähr 05 Aug '05

05 Aug '05

hi, the webserver on http://pike.ida.liu.se/ seems to be down. any ideas what's wrong? the host is reachable, ssh is answering, although i can not log in, which i could before. that suggests that pike.ida.liu.se is pointing to a different (or freshly installed) machine. greetings, martin.

4 4

New feature: Tools.Monger
by Bill Welliver 28 Jul '05

28 Jul '05

I've placed the first version of the unbundled Monger tool up on the modules.gotpike.org website. Unbundling the monger tool is the first step toward making all Pike modules available outside the pike distribution. This first release offers significant new functionality for developer types, in that it allows a certain amount of change functionality when working with the remote module repository. In fact, this functionality was used to create the new version of Tools.Monger and upload its source using Tools.Monger.MongerDeveloper. As of right now, you'll have to create a new module using the web interface. I think that the most dangerous situations are caught, but please don't purposely try to crash the repository :) Here's an example: > object m = Tools.Monger.MongerDeveloper(); > m->set_auth("joedeveloper", "pikerulez"); (1) Result: 0 > m->add_new_version("Tools.Monger", "7.6.28", "This is the first functional unbundled release of the Monger tool.\nThis version includes developer functionality, such as version creation,\ndependency functionality, and source upload.", "GPL/LGPL/MPL"); (2) Result: 1 > m->set_dependency("Tools.Monger", "7.6.28", "Pike", "7.6.0", "7.7.999", 1); (3) Result: 1 > m->set_module_source("Tools.Monger", "7.6.28", "Tools_Monger-7.6.28.tar.gz"); (2) Result: 1 > quit To get the new release, use this command with any 7.6.6 or higher release of Pike: pike -x monger --install Tools.Monger You may need to remove your Tools.pmod/Standalone.pmod/monger.pike.o file if you get annoyed at the out of date warning messages. Obviously, this is just a first step, and so there are some things that are less than ideal, but I think it's a big step in the right direction for users and developers. As always, comments and suggestions are welcome. Bill

1 0

7.6 release
by Bill Welliver 28 Jul '05

28 Jul '05

OK, I've extracted the majority of changes from the changelog. Anyone care to look through my work to see if i've missed anything? After that, what's next in getting a new release out the door? Bill

5 4

pike terminology: parent/child, super/sub or base/derived?
by Martin Bähr 27 Jul '05

27 Jul '05

hi, what is the preferred terminology for pike documentation: parent and child class super and subclass base and derived class ? i am kinda leaning towards parent/child. greetings, martin.

3 2

Changes
by Bill Welliver 25 Jul '05

25 Jul '05

I've started going through the changelog since 7.6.24. I checked in what I have so far; please take a look to make sure your change is properly described (I'm not finished yet, so consider these preliminary). Also, I'm not sure, but it looks like there might be some missing entries for previous 7.6 releases. Can anyone confirm or deny that? Thanks, Bill

2 1

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