December 2023 - Pharo-users

Re: How to open files in the underlying OS

by Rui Viana Pereira

@Guillermo: Very useful remark, it made me review my code. First of all, I refactored it to assure the address is written correctly, that is, with a separator '\' instead of '/'. (I suppose there is a method to convert paths from Pharo to DOS, but I couldn't find it, so I reinvented the wheel.) Still, nothing happens. Then, I evaluated WinExplorer explore: 'D:\Sonoteca_sample\CRIANCAS\criancas_001.wav' putting the argument by hand. This is a file that exists and the argument worked well when introduced directly on the Win explorer search bar, without complaints from Windows. Still nothing happens, and the Inspector tells a WinHandle(@ 16r0000001F). Is the #explore: method the right one to use? (I mean, to open the file with the registered program in Windows). This is quite annoying, because apart from that the app is working well in Pharo, even if it needs some cleaning. But after a lot of weeks of work (I'm a beginner, I go very slowly in my spare time) I came to the conclusion that it was useless work, because I can't communicate with Windows shell, which is a very important part of my aims. [Side note: What I'm building is a very simple app, ment to organize and classify my field sound recordings. A kind of database for a sound library. It has only 2 classes: SoundRecording and SoundLibrary. And a few presenters. SoundLibrary holds <recordings> (aSet), <tags> (aSet) and <directory> (aFileReference, which allows the library folder to be movable). A SoundRecording holds a bunch of properties needed for professional information and editing on sound files, plus an <address> (a relative FileReference), which is the central piece for identifying each recording/file. There is some automatic methods, including a scanner to search for files in the library and automatically create SoundRecording objects from each file found. This is crucial, because by now I have thousands of recordings. Next step would be to do the same with my books/docs library, which also goes by thousands and is an awful amount of garbage - non organized, classified and cross referenced information is nothing more than garbage] *Rui Viana Pereira* Guillermo Polito <guillermopolito(a)gmail.com> escreveu no dia quarta, 6/12/2023 Ã (s) 08:23: > Hi Rui, > > Just a quick look at the Win32 error codes > > > https://learn.microsoft.com/en-us/windows/win32/debug/system-error-codes--0… > > It tells me that 16r00000002 means âFile not foundâ. > Are you sure that c:\pharo.pdf is there and that you have permission to > open it? > > G > > El 5 dic. 2023, a las 21:12, Rui Viana Pereira <ruivianapereira(a)gmail.com> > escribiÃ³: > > I'm building an app with Pharo 11. > The OS (for the moment) is Windows 10 home. > At a certain point I need to open several types of files (pdf, wav, url, > etc.) with the registered apps in Windows (or any other OS) and keep > working in Pharo, in parallel. > I couldn't find the way to do it - that is, to use the Windows shell. > > I loaded the Pharo-OS-Windows package, but when I evaluate something like > WinShell shellOpen: 'c:\pharo.pdf' > apparently nothing happens. > The inspector gives me > a WinHandle(@ 16r00000002) > Which is the right way to do it? > Rui Viana Pereira > > >

Dec. 6, 2023

Re: How to open files in the underlying OS

by Guillermo Polito

Hi Rui, Just a quick look at the Win32 error codes https://learn.microsoft.com/en-us/windows/win32/debug/system-error-codes--0… <https://learn.microsoft.com/en-us/windows/win32/debug/system-error-codes--0…> It tells me that 16r00000002 means âFile not foundâ. Are you sure that c:\pharo.pdf is there and that you have permission to open it? G > El 5 dic. 2023, a las 21:12, Rui Viana Pereira <ruivianapereira(a)gmail.com> escribiÃ³: > > I'm building an app with Pharo 11. > The OS (for the moment) is Windows 10 home. > At a certain point I need to open several types of files (pdf, wav, url, etc.) with the registered apps in Windows (or any other OS) and keep working in Pharo, in parallel. > I couldn't find the way to do it - that is, to use the Windows shell. > > I loaded the Pharo-OS-Windows package, but when I evaluate something like > WinShell shellOpen: 'c:\pharo.pdf' > apparently nothing happens. > The inspector gives me > a WinHandle(@ 16r00000002) > Which is the right way to do it? > Rui Viana Pereira

Dec. 6, 2023

How to open files in the underlying OS

by Rui Viana Pereira

I'm building an app with Pharo 11. The OS (for the moment) is Windows 10 home. At a certain point I need to open several types of files (pdf, wav, url, etc.) with the registered apps in Windows (or any other OS) and keep working in Pharo, in parallel. I couldn't find the way to do it - that is, to use the Windows shell. I loaded the Pharo-OS-Windows package, but when I evaluate something like WinShell shellOpen: 'c:\pharo.pdf' apparently nothing happens. The inspector gives me a WinHandle(@ 16r00000002) Which is the right way to do it? *Rui Viana Pereira*

Dec. 5, 2023

This week (48/2023) on the Pharo Issue Tracker

by Marcus Denker

# Pharo 11 - Update spec to 1.2.5 #15575 https://github.com/pharo-project/pharo/pull/15575 # Features - 10612-Add-visitPragmasNodes-as-we-have-visitTemporaryNodes #15610 https://github.com/pharo-project/pharo/pull/15610 - Optimized ephemeron support for Fuel #15563 https://github.com/pharo-project/pharo/pull/15563 # Fixes - ExternalAddress: Avoid temporary instance of ByteArray #15404 https://github.com/pharo-project/pharo/pull/15404 - Change #OSWindowMorphicEventHandler>>visitMouseWheelEvent: to manage â¦ #15639 https://github.com/pharo-project/pharo/pull/15639 - Fix inconsistent behavior after BlockCannotReturn exception; fixes issue #15433 #15443 https://github.com/pharo-project/pharo/pull/15443 - Browser-keep-new-class-selected #15619 https://github.com/pharo-project/pharo/pull/15619 - remove CommandLineArguments default #15573 https://github.com/pharo-project/pharo/pull/15573 - 15437-Could-browsing-a-mistyped-class-not-show-a-debugger #15612 https://github.com/pharo-project/pharo/pull/15612 - Little fix/enhancement on BenchTFFI* #15615 https://github.com/pharo-project/pharo/pull/15615 # Graphics, Rendering, Icons - Fix ârecolorâ halo icon #15554 https://github.com/pharo-project/pharo/pull/15554 - Fix âdragâ halo icon in #customHaloSpecifications #15556 https://github.com/pharo-project/pharo/pull/15556 - Refactor ImageFillStyle to replace âformâ by âformSetâ #15561 https://github.com/pharo-project/pharo/pull/15561 - Fix infinite loop in ThemeIcons when icon #blank is missing #15570 https://github.com/pharo-project/pharo/pull/15570 # Refactoring Engine - Fixes #15467 [RB] Refactoring: Double announce of comment change #15589 https://github.com/pharo-project/pharo/pull/15589 - introduce a hook so that we can access changes from the tests. #15569 https://github.com/pharo-project/pharo/pull/15569 - Remove Class Variable refactoring since we have removeSharedVariableRâ¦ #15557 https://github.com/pharo-project/pharo/pull/15557 - Refactor: remove method driver #15558 https://github.com/pharo-project/pharo/pull/15558 - Removing all the RemoveClass strategy now that we have a driver. #15555 https://github.com/pharo-project/pharo/pull/15555 - Feat: deprecate class driver #15560 https://github.com/pharo-project/pharo/pull/15560 - Fixes 15590: [RB] option shouldUseExistingMethod: should always be true #15594 https://github.com/pharo-project/pharo/pull/15594 - Try testing drivers2 #15598 https://github.com/pharo-project/pharo/pull/15598 - Fix refactoring AddMethodComment #15622 https://github.com/pharo-project/pharo/pull/15622 - fix #15606 remove left over of the use existing method refactoring coâ¦ #15616 https://github.com/pharo-project/pharo/pull/15616 - Ensure real superclass setting in RBInsertNewClassRefactoring #15641 https://github.com/pharo-project/pharo/pull/15641 # Variables / ClassBuilder, ClassParser - Cleanup: move the methods for temps to the compiler package #15649 https://github.com/pharo-project/pharo/pull/15649 - 15345-Classes-with-shared-pools-cannot-be-created #15607 https://github.com/pharo-project/pharo/pull/15607 - 15592-MNU-when-looking-for-the-writers-of-a-shared-pool-variable #15603 https://github.com/pharo-project/pharo/pull/15603 - #ShiftClassBuilder>>fillFor: should not use #sharedVariablesFromString: #15623 https://github.com/pharo-project/pharo/pull/15623 - add UndefinedClassVariable #15630 https://github.com/pharo-project/pharo/pull/15630 - ClassParser: add support for #unrestrictedVariableDefinitions setting for Shared Variables #15638 https://github.com/pharo-project/pharo/pull/15638 # Tests and Test Runner - Improve #denyEmpty: #15580 https://github.com/pharo-project/pharo/pull/15580 - Clean up the Undeclared in ClassFactoryForTestCase when we clean up #15611 https://github.com/pharo-project/pharo/pull/15611 - Fix #15386 DrTests keeps filter when minimizing - maximizing #15549 https://github.com/pharo-project/pharo/pull/15549 # Bootstrap - Bootstrap: Extract Jobs from Hermes loading #15655 https://github.com/pharo-project/pharo/pull/15655 - Bootstrap: Extract Colors from KernelGroup to Display #15636 https://github.com/pharo-project/pharo/pull/15636 - Bootstrap:â¯Load System-Hashing and Random-Core later in the bootstrap #15613 https://github.com/pharo-project/pharo/pull/15613 - Bootstrap: Remove Network-UUID from KernelGroup #15605 https://github.com/pharo-project/pharo/pull/15605 - Bootstrap: Improve logging architecture #15505 https://github.com/pharo-project/pharo/pull/15505 - Move continuation out of the Kernel #15585 https://github.com/pharo-project/pharo/pull/15585 # Iceberg/Git - Fixing Calypso Extension on Iceberg #15587 https://github.com/pharo-project/pharo/pull/15587 - Fixing the code as the return of informDuring: now works #1774 https://github.com/pharo-vcs/iceberg/pull/1774 - fixing-adding-existing-repo #1773 https://github.com/pharo-vcs/iceberg/pull/1773 - Adding application in model temporarly #1772 https://github.com/pharo-vcs/iceberg/pull/1772 # Spec - Commit deprecations transforms #1481 https://github.com/pharo-spec/Spec/pull/1481 - use valueWithReceiver: #1479 https://github.com/pharo-spec/Spec/pull/1479 - fix deprecated send #noPattern: #1480 https://github.com/pharo-spec/Spec/pull/1480 # NewTools - Integration of object-centric halt once on call breakpoint to tools #627 https://github.com/pharo-spec/NewTools/pull/627 - Simpler stack items #632 https://github.com/pharo-spec/NewTools/pull/632 - Debugger dynamic layouts #630 https://github.com/pharo-spec/NewTools/pull/630 - use valueWithReceiver: #631 https://github.com/pharo-spec/NewTools/pull/631 # Website - add newcomers page to community #56 https://github.com/pharo-project/pharo-website/pull/56 - Added section about Advanced OOD Mooc #58 https://github.com/pharo-project/pharo-website/pull/58 # Cleanup - Packages: Unify way to name tags #15588 https://github.com/pharo-project/pharo/pull/15588 - Support removing old change sorter #15645 https://github.com/pharo-project/pharo/pull/15645 - use allButFirst and simplify expression #15634 https://github.com/pharo-project/pharo/pull/15634 - Remove dead code in Debugging-Core #15624 https://github.com/pharo-project/pharo/pull/15624 - add CompiledCode #basicNew:header: #15626 https://github.com/pharo-project/pharo/pull/15626 - Ring-deprecateClassVarNamed #15621 https://github.com/pharo-project/pharo/pull/15621 - Move IR decompilation from Opal to Flashback #15595 https://github.com/pharo-project/pharo/pull/15595 - Remove empty methods from OSPlatform #15579 https://github.com/pharo-project/pharo/pull/15579 - Clean perform message command line handler #15582 https://github.com/pharo-project/pharo/pull/15582 - instead of valueWithReceiver:arguments: #(), use valueWithReceiver: #15618 https://github.com/pharo-project/pharo/pull/15618 - use #valueWithReceiver: when possible #15650 https://github.com/pharo-project/pharo/pull/15650

Dec. 4, 2023

[SOLVED} Cryptography repo on github not loading on Pharo 10

by Davide Varvello

Hi Norbert and guys on the list, I finally made the suggestion Norbert gave me (see here: https://lists.pharo.org/empathy/thread/PG7CCEBGJOI4SNGO6GNQPCLP47EXWFAX?has… ) working. There was something to tune in: 1) The SSL binding here https://github.com/PierceNg/OpenSSL-Pharo that's working on Pharo 10 is the pharo9 one. This one:Â Metacello newÂ baseline: 'OpenSSL';Â repository: 'github://PierceNg/OpenSSL-Pharo:openssl_1_1_pharo9/src-st';Â loadÂ Â the previous one (github://PierceNg/OpenSSL-Pharo:openssl_1_1/src-st) does not work with Pharo 10, it gives a DNU on LcLibCrypto>>moduleName. 2) The code Norbert suggested (https://lists.pharo.org/empathy/thread/PG7CCEBGJOI4SNGO6GNQPCLP47EXWFAX?has…) should be implemented in a subclass of LcLibCrypto LcLibCrypto subclass: #MyCrypto instanceVariableNames: '' classVariableNames: '' package: 'MyPackage' 3) Call the method pbkdf2Password: aPlainPassword salt: aSalt iterations: someIterations keySize: aSize using uniqueInstance, i.e.Â MyCrypto uniqueInstance pbkdf2Password: aPlainPassword salt: aSalt iterations: someIterations keySize: aSize HTH CheersDavode

Dec. 4, 2023

Re: Cryptography repo on github not loading on Pharo 10

by Davide Varvello

Hi NorbertI can't make your code working I loaded the OpenSSL-Pharo lib, but when I run your code it gives me a DNU Exception: Instance of LcLibCrypto did not understand #moduleName.See screenshot CheersDavide On Thursday, November 30, 2023 at 11:06:09 PM GMT+1, Norbert Hartl <norbert(a)hartl.name> wrote: You can load the code and I think PBKDF2 does not rely on the troubling code. But when you do this you will see that it is way too slow. The number of iterations for modern crypto environment makes a single password action many seconds to complete. I use theÂ https://github.com/PierceNg/OpenSSL-Pharo library where Iâve added two methodsÂ pbkdf2: password passwordLength: passlen salt: salt saltLength: saltlen iterations: iterations keySize: keySize result: result hashFunction: algo ^ self ffiCall: #(void PKCS5_PBKDF2_HMAC (const char* password, int passlen, const char* salt, int saltlen, int32 iterations, EVP_MD *algo, uint32 keySize, uint8* result)) andÂ pbkdf2Password: password salt: salt iterations: iterations keySize: keySize | result | result := ByteArray new: keySize. selfÂ pbkdf2: passwordÂ passwordLength: password size salt: saltÂ saltLength: salt size iterations: iterationsÂ keySize: keySizeÂ result: result hashFunction: LcEvpSHA256 new. ^ result maybe this helps even if it is not a load and use option. The two methods can just be added as extension methods in your own code. Norbert

Dec. 2, 2023

Smallscript - A Smalltalk-Inspired Scripting Language

by Craig Johnson

for those who are interested. https://www.codeproject.com/Articles/5373567/Smallscript-A-Smalltalk-Inspir…

Dec. 1, 2023

Re: Cryptography repo on github not loading on Pharo 10

by Davide Varvello

Thank you, NorbertI'll use your approach, thank you very much CheersDavide On Thursday, November 30, 2023 at 11:06:09 PM GMT+1, Norbert Hartl <norbert(a)hartl.name> wrote: You can load the code and I think PBKDF2 does not rely on the troubling code. But when you do this you will see that it is way too slow. The number of iterations for modern crypto environment makes a single password action many seconds to complete. I use theÂ https://github.com/PierceNg/OpenSSL-Pharo library where Iâve added two methodsÂ pbkdf2: password passwordLength: passlen salt: salt saltLength: saltlen iterations: iterations keySize: keySize result: result hashFunction: algo ^ self ffiCall: #(void PKCS5_PBKDF2_HMAC (const char* password, int passlen, const char* salt, int saltlen, int32 iterations, EVP_MD *algo, uint32 keySize, uint8* result)) andÂ pbkdf2Password: password salt: salt iterations: iterations keySize: keySize | result | result := ByteArray new: keySize. selfÂ pbkdf2: passwordÂ passwordLength: password size salt: saltÂ saltLength: salt size iterations: iterationsÂ keySize: keySizeÂ result: result hashFunction: LcEvpSHA256 new. ^ result maybe this helps even if it is not a load and use option. The two methods can just be added as extension methods in your own code. Norbert Am 30.11.2023 um 16:32 schrieb Davide Varvello via Pharo-users <pharo-users(a)lists.pharo.org>: Hi Marcus,Yes I can do it, but the Cryptogrphy package relies on InputEventSensor to generate random seeds in this code: RandomGenerator class>> unpredictableStringsDo: aBlock "Enumerate sources of information from my environment that should be generally hard to guess." | time | time := Time millisecondsToRun: [ aBlock value: World imageForm bits compressToByteArray ; value: Sensor mousePoint x asString ; value: Sensor mousePoint y asString ; value: Time millisecondClockValue asByteArray ; value: Date today asString ; value: Time now asString ; value: Display extent asString. 100 timesRepeat: [ aBlock value: UUID new ]. #(imagePath lastUpdateString systemInformationString shortImageName datedVersion lastQuitLogPosition licenseStringTemplate) Â collect: [ : each | aBlock value: (SmalltalkImage current perform: each) asByteArray ] ]. aBlockÂ value: time asByteArray; "maybe the pointer has moved, hit it again." value: Sensor mousePoint asString ; value: Time millisecondClockValue asByteArray I need to use PBKDF2, is there any alternative (running on Pharo 10) to this Cryptography package?Â TIA CheersDavide On Thursday, November 30, 2023 at 12:48:49 PM GMT+1, Marcus Denker <marcus.denker(a)gmail.com> wrote: You could add a class InputEventSensor (just a subclass of Object) to make the code load (the package might want to add methods to that class?) After that it will be easier to see why it relies on low level code like that. Â Â Â Marcus > On 29 Nov 2023, at 16:14, Davide Varvello via Pharo-users <pharo-users(a)lists.pharo.org> wrote: > > > Nobody? > InputEventSensor is missing in Pharo 10. > > There are also several unheard requests about InputEventSensor on Discord, see attachment. > > Cheers > Davide > > > > On Tuesday, November 28, 2023 at 02:43:18 PM GMT+1, Davide Varvello via Pharo-users <pharo-users(a)lists.pharo.org> wrote: > > > Hi Guys, > The crypto repo: > > Metacello new >Â baseline: 'Cryptography'; >Â repository: 'github://pharo-contributions/Cryptography'; >Â load:'core'. > is not loading due to a dependency on InputEventSensor, can you help me please? > > TIA > Davide > <SCR-20231129-oguq.png>

Dec. 1, 2023