April 2012 - Pharo-users - lists.pharo.org

Re: [Pharo-users] truly basic terminal emulation

by Camillo Bruni

On 2012-04-22, at 17:53, Daniel Lyons wrote: > > On Apr 21, 2012, at 1:19 PM, Camillo Bruni wrote: >> well you could also plug my readline implementation to any text morph and >> set the a monospace font as default for code :) (that's what I have anyway). >> >> Manually creating a text morph an changing it's font to some fixed-width >> version is not that hard. And then depending on your needs you would simply >> edit / change the underlying text (in this case with even my readline implementation)... > > I believe you but I seem to need a bit more explicit hand-holding. For example, when I create a new text morph, it winds up on the screen by itself with no enclosing window. Using the code derived from the TextMorph class comment: > > font := TextFontReference toFont: (StrikeFont familyName: 'Pragmata Pro' size: 16). > tMorph := TextMorph new. > t1 := 'This is fixed-width' asText addAttribute: font. > tMorph contents: t1. > tMorph openInHand. > > It doesn't seem to recognize Pragmata Pro or any other font name I put in, I always get the default font I set in my preferences (which is a system font and works fine). I see there's a FixedFaceFont class, but it looks like a completely different sort of thing. indeed maybe a workspace will do just fine then :), sadly I'm not that much into morphic hence my partial approach here (that's why I personally find it far easier to directly use the terminal)... - check that you have freetype enabled in your settings (otherwise system fonts won't be recognized) - as a pragmatic solution I'd change the coding font globally to fixed-width (default in my images since I cannot program in a non mono-spaced font :P) "open a new workspace " ws := Workspace openContents: 'Initial Contents' " update the contents of the workspace" ws contents: 'new Contents' > I also don't see how to get started with your Readline implementation. I'm sure I'd like to use it eventually but I want to get something basic working that I can understand first. for the readline stuff check the test (that's generally the best place to see how code works ;) see class: RLReadlineTest a small example is given in RLReadline >> #readlineExample the basic principle is that you move around a cursor and put characters / strings there: RLReadline >> #write: RLReadline >> #writeAll: I know the readline implementation is quite complex for what it does, but you shouldn't bother too much and simply rely on the public interface and the example use-cases provided by the tests. best cami

April 22, 2012

Re: [Pharo-users] truly basic terminal emulation

by Daniel Lyons

On Apr 21, 2012, at 1:19 PM, Camillo Bruni wrote: > well you could also plug my readline implementation to any text morph and > set the a monospace font as default for code :) (that's what I have anyway). > > Manually creating a text morph an changing it's font to some fixed-width > version is not that hard. And then depending on your needs you would simply > edit / change the underlying text (in this case with even my readline implementation)... I believe you but I seem to need a bit more explicit hand-holding. For example, when I create a new text morph, it winds up on the screen by itself with no enclosing window. Using the code derived from the TextMorph class comment: font := TextFontReference toFont: (StrikeFont familyName: 'Pragmata Pro' size: 16). tMorph := TextMorph new. t1 := 'This is fixed-width' asText addAttribute: font. tMorph contents: t1. tMorph openInHand. It doesn't seem to recognize Pragmata Pro or any other font name I put in, I always get the default font I set in my preferences (which is a system font and works fine). I see there's a FixedFaceFont class, but it looks like a completely different sort of thing. I also don't see how to get started with your Readline implementation. I'm sure I'd like to use it eventually but I want to get something basic working that I can understand first. Thanks again, â Daniel Lyons

April 22, 2012

Re: [Pharo-users] truly basic terminal emulation

by Camillo Bruni

On 2012-04-21, at 18:51, Daniel Lyons wrote: > > On Apr 21, 2012, at 5:34 AM, Camillo Bruni wrote: > >> runnnig it from real stdin / stdout won't help you? >> Cause that's what I did with my readline implementation: >> >> - open an image from the command-line >> - run a readline instance in the image using FileStream stdout as output >> - test my implementation with the image and the real terminal side-by-side > > I suppose I could, but I was hoping to have it working inside Smalltalk. Also for didactic purposes. I intend to write something to visualize the registers in the CPU next. Is it the fixed-width font that's making it difficult to do from a UI inside Pharo? I could certainly compromise on that. well you could also plug my readline implementation to any text morph and set the a monospace font as default for code :) (that's what I have anyway). Manually creating a text morph an changing it's font to some fixed-width version is not that hard. And then depending on your needs you would simply edit / change the underlying text (in this case with even my readline implementation)... Check my implementation at: http://ss3.gemstone.com/ss/readline.html

April 21, 2012

Re: [Pharo-users] truly basic terminal emulation

by Daniel Lyons

On Apr 21, 2012, at 5:34 AM, Camillo Bruni wrote: > runnnig it from real stdin / stdout won't help you? > Cause that's what I did with my readline implementation: > > - open an image from the command-line > - run a readline instance in the image using FileStream stdout as output > - test my implementation with the image and the real terminal side-by-side I suppose I could, but I was hoping to have it working inside Smalltalk. Also for didactic purposes. I intend to write something to visualize the registers in the CPU next. Is it the fixed-width font that's making it difficult to do from a UI inside Pharo? I could certainly compromise on that. â Daniel Lyons

April 21, 2012

Re: [Pharo-users] truly basic terminal emulation

by Camillo Bruni

runnnig it from real stdin / stdout won't help you? Cause that's what I did with my readline implementation: - open an image from the command-line - run a readline instance in the image using FileStream stdout as output - test my implementation with the image and the real terminal side-by-side On 2012-04-21, at 10:34, Daniel Lyons wrote: > > On Apr 21, 2012, at 2:17 AM, StÃ©phane Ducasse wrote: >> Ahhhh >> have a look at transcripter :) >> because you will get an simple repl >> Why a workspace is not enough for you :) > > They might be! Sorry if I'm being dense. :) > > I hate to ask for this much hand-holding, but I'm just not seeing how it's done. Supposing I have an object with a #writeCharacter:aChar and #readCharacter selectors that read and write a character to/from the device respectively, what do I need to do to hook that object up to a Transcripter or a Workspace? And how can I force the font to be fixed-width? > > Thanks again, > > â > Daniel Lyons > >

April 21, 2012

Re: [Pharo-users] truly basic terminal emulation

by Daniel Lyons

On Apr 21, 2012, at 2:17 AM, StÃ©phane Ducasse wrote: > Ahhhh > have a look at transcripter :) > because you will get an simple repl > Why a workspace is not enough for you :) They might be! Sorry if I'm being dense. :) I hate to ask for this much hand-holding, but I'm just not seeing how it's done. Supposing I have an object with a #writeCharacter:aChar and #readCharacter selectors that read and write a character to/from the device respectively, what do I need to do to hook that object up to a Transcripter or a Workspace? And how can I force the font to be fixed-width? Thanks again, â Daniel Lyons

April 21, 2012

Re: [Pharo-users] truly basic terminal emulation

by StÃ©phane Ducasse

On Apr 21, 2012, at 9:57 AM, Daniel Lyons wrote: > Hi Stef, > > On Apr 21, 2012, at 1:34 AM, StÃ©phane Ducasse wrote: > >> I know that camillo and toon did a full repl command line editor >> So have a look at Coral packages. > > > Very cool stuff, thanks. I think this is the inverse of what I need though. :) I just need a basic in-Pharo console-like-thing, not a way to run Pharo code from the regular console. Am I misunderstanding Coral? Ahhhh have a look at transcripter :) because you will get an simple repl Why a workspace is not enough for you :) > > Thanks, > > â > Daniel Lyons > >

April 21, 2012

Re: [Pharo-users] truly basic terminal emulation

by Daniel Lyons

Hi Stef, On Apr 21, 2012, at 1:34 AM, StÃ©phane Ducasse wrote: > I know that camillo and toon did a full repl command line editor > So have a look at Coral packages. Very cool stuff, thanks. I think this is the inverse of what I need though. :) I just need a basic in-Pharo console-like-thing, not a way to run Pharo code from the regular console. Am I misunderstanding Coral? Thanks, â Daniel Lyons

April 21, 2012

Re: [Pharo-users] truly basic terminal emulation

by StÃ©phane Ducasse

Hi daniel I know that camillo and toon did a full repl command line editor So have a look at Coral packages. Stef On Apr 21, 2012, at 8:48 AM, Daniel Lyons wrote: > Hi, > > For fun I'm "porting" my UMIX UM implementation I wrote in C for ICFP 2006 to Pharo. For the sake of this, I need a really, really basic terminal emulator, honestly just a window showing text in a fixed-width font that I can read from and write to. Bonus if I can't move the cursor around and delete outputted text, but not necessary. > > CommandShell looks like overkill for what I need. I'd rather build something basic from scratch to learn more about Morphic. I'd appreciate any direction you could share with me. > > Thanks, > > â > Daniel Lyons > >

April 21, 2012

truly basic terminal emulation

by Daniel Lyons

Hi, For fun I'm "porting" my UMIX UM implementation I wrote in C for ICFP 2006 to Pharo. For the sake of this, I need a really, really basic terminal emulator, honestly just a window showing text in a fixed-width font that I can read from and write to. Bonus if I can't move the cursor around and delete outputted text, but not necessary. CommandShell looks like overkill for what I need. I'd rather build something basic from scratch to learn more about Morphic. I'd appreciate any direction you could share with me. Thanks, â Daniel Lyons

April 21, 2012