January 2017 - Oberon - mailman3.inf.ethz.ch

Source code browser in NO
by Srinivas Nayak 25 Mar '17

25 Mar '17

Dear All, Do we have any source code browser in NO? I see we have Definitions browser in NO. Using Watson, if we create *.Def and *.Def.html, we can browse through Definitions. Anything similar for source code? With thanks and best regards, Yours sincerely, Srinivas Nayak Home: http://www.mathmeth.com/sn/ Blog: http://srinivas-nayak.blogspot.in/

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Re: [Oberon] Re (2): Detecting whether a Text is a module source.
by John R. Strohm 05 Mar '17

05 Mar '17

Boyer-Moore string search algorithm? --- peter(a)easthope.ca wrote: From: <peter(a)easthope.ca>, Bob Walkden <bob(a)web-options.com> To: <oberon(a)lists.inf.ethz.ch> Subject: [Oberon] Re (2): Detecting whether a Text is a module source. Date: Sun, 29 Jan 2017 16:10:59 +0000 > According to the EBNF for O7, the smallest legal module ... OK, thanks. Will keep in mind for later. For now I'm concerned only with detecting the presence of a word in a text; not with conformity to a syntax. What is efficient code to find whether the word "Jaguar" is present in a text for example? There are many ways of varying efficiency. A compiler must have a solution but I'm unlikely to recognize it. Can anyone give a code example or direct me to one? Thanks, ... Lyall E.

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Re (2): Aos start script.
by peter＠easthope.ca 04 Feb '17

04 Feb '17

From: eas lab <lab.eas(a)gmail.com> Date: Mon, 30 Jan 2017 09:16:51 +0200 > Where do I find "The wrapper script on the page" ? Date: Sat, 28 Jan 2017 09:55:16 +0200 > Your web-page-instructions solved the vitally important font-size > problem. The zooming capability of Aos solves it. You've opened the page in question? Here is the address again. http://easthope.ca/UnixAosUsage.html Below the heading "Configuration" is text in fixed pitch font. That is the script. Also note the sentence "The following script ..." and the line "#!/bin/bash". If not familiar with bash shell scripts google "bash shell script". > That's perhaps not possible, with the different display W,H ratios, If a window can be stretched with the mouse there is no reason the process can't be mechanized. Regards, ... Lyall E. -- 123456789 123456789 123456789 123456789 123456789 123456789 123456789 Tel: +1 360 639 0202 Pender Is.: +1 250 629 3757 http://easthope.ca/Peter.html Bcc: peter at easthope. ca

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Re (3): Search in Text, was "Detecting whether a Text is a module source."
by peter＠easthope.ca 02 Feb '17

02 Feb '17

Thanks for all the replies. Summarized here. /usr/aos/source/Oberon.Edit.Mod Edit.Search /usr/aos/source/Oberon.Find.Mod Find.All /usr/aos/source/Oberon.Strings.Mod Strings.Search https://www.inf.ethz.ch/personal/wirth/ProjectOberon/Sources/ORS.Mod.txt ORS.Identifier Any omission is not deliberate. From: Douglas G Danforth <danforth(a)greenwoodfarm.com> Date: Sun, 29 Jan 2017 15:59:12 -0800 > Yes, but the little known X-Search algorithm is slightly more > efficient. This might be related. https://en.wikipedia.org/wiki/Knuth's_Algorithm_X Interesting to learn that the Boyer-Moore algorithm was published so recently as 1977. Oberon discussion has always emphasized code reusability. Therefore disappointing that each of the prcedures in quesstion is implemented for use within the parent module or is a command rather than a parameterized proceedure. From: Andreas Pirklbauer <andreas_pirklbauer(a)yahoo.com> Date: Sun, 29 Jan 2017 20:54:53 +0100 > Procedure Search in module Edit.Mod ... Boyer-Moore > search algorithm. I might succeed to revise Edit.Search with result such as this. PROCEDURE Search*(T: Texts.Text; VAR pos: LONGINT; pattern: ARRAY OF CHAR); Thanks again to everyone, ... Lyall E. -- 123456789 123456789 123456789 123456789 123456789 123456789 123456789 Tel: +1 360 639 0202 Pender Is.: +1 250 629 3757 http://easthope.ca/Peter.html Bcc: peter at easthope. ca

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Aos start script; was "Parts & paths."
by peter＠easthope.ca 30 Jan '17

30 Jan '17

From: eas lab <lab.eas(a)gmail.com> Date: Sat, 28 Jan 2017 09:55:16 +0200 > Your web-page-instructions solved the vitally important font-size > problem. Good to know that someone can make sense of my description. Automation requires only a command to scale an Aos window, frame and contents, by a user specified factor. Does it exist? > Another problem with Aos, for me, is that it leaves a mass of small > .tmp.*.* files, which contaminates my working directories. The wrapper script on the page takes care of housekeepng, including removal of tmp files. If the working file system is not mounted, fsck is applied before mounting. That avoids mounting a broken file system on a flash store. Reading the script and adjusting for your context is adviseable. Regards, ... Lyall E. -- 123456789 123456789 123456789 123456789 123456789 123456789 123456789 Tel: +1 360 639 0202 Pender Is.: +1 250 629 3757 http://easthope.ca/Peter.html Bcc: peter at easthope. ca

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Re (2): Detecting whether a Text is a module source.
by peter＠easthope.ca 29 Jan '17

29 Jan '17

> According to the EBNF for O7, the smallest legal module ... OK, thanks. Will keep in mind for later. For now I'm concerned only with detecting the presence of a word in a text; not with conformity to a syntax. What is efficient code to find whether the word "Jaguar" is present in a text for example? There are many ways of varying efficiency. A compiler must have a solution but I'm unlikely to recognize it. Can anyone give a code example or direct me to one? Thanks, ... Lyall E. -- 123456789 123456789 123456789 123456789 123456789 123456789 123456789 Tel: +1 360 639 0202 Pender Is.: +1 250 629 3757 http://easthope.ca/Peter.html Bcc: peter at easthope. ca

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Detecting whether a Text is a module source.
by peter＠easthope.ca 29 Jan '17

29 Jan '17

123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 To detect whether a Text is a source, my initial thought is to read, searching for the keyword MODULE. This or a similar problem must have been solved years ago. Tips? A similar calculation to adapt to this case? Thanks, ... Lyall E. -- 123456789 123456789 123456789 123456789 123456789 123456789 123456789 Tel: +1 360 639 0202 Pender Is.: +1 250 629 3757 http://easthope.ca/Peter.html Bcc: peter at easthope. ca

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Re (2): Detecting whether a Text is a module source.
by Andreas Pirklbauer 29 Jan '17

29 Jan '17

Procedure Search in module Edit.Mod on http://www.projectoberon.com contains an implementation of the Boyer-Moore search algorithm. Sent from my iPhone

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Re: Parts & paths.
by peter＠easthope.ca 28 Jan '17

28 Jan '17

From: eas lab <lab.eas(a)gmail.com> Date: Sun, 15 Jan 2017 08:11:43 +0200 > Oberon.Text file has a default font size field. > When I changed that and re-launched Oberon from inside Aos, there was no > corresponding font change in the new-Oberon launch. My solution is here. http://easthope.ca/UnixAosUsage.html#TextProportionality Someone else might have a fully automated solution. > Does Inet connect via the Linux underlying system; ie. connect via Linux, > and use Aos' inet facilities? Works perfectly. Sections on email in the same page. ... Lyall E. -- 123456789 123456789 123456789 123456789 123456789 123456789 123456789 Tel: +1 360 639 0202 Pender Is.: +1 250 629 3757 http://easthope.ca/Peter.html Bcc: peter at easthope. ca

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Functional programming and Oberon
by Srinivas Nayak 26 Jan '17

26 Jan '17

These days I see, every programming language is behind functional programming! Say, C++ or Java or C# or Javascript... recent trend is the old fashion! The fashion of Lambda and Closure! How far is Oberon from functional programming? Surprisingly we already have all the necessary stuffs in Oberon: 1. nested procedures 2. procedure variable 3. scoping of procedure local variables etc. But only thing we need is: a way to preserve dynamic state of a procedure and unnamed procedures! What else? With thanks and best regards, Yours sincerely, Srinivas Nayak Home: http://www.mathmeth.com/sn/ Blog: http://srinivas-nayak.blogspot.in/

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