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antlr notes and rants

Posted 11-26-2012 at 07:31 AM by NullTerminator
Updated 04-13-2013 at 11:25 AM by NullTerminator

Collecting some refs and thoughts on antlr, parser, tree walker, grammar, etc

Escape Characters:
Short article at antlr-interest

useful command line args java org.antlr.Tool
http://www.antlr.org/wiki/display/AN...d+line+options
-trace - generate a parser with some tracing statements
-debug - generates a parser that emits debugging information
-profile, hmmmm
-print or -report prints out the grammar

A...
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Old

Android OCR notes

Posted 11-22-2012 at 03:28 PM by NullTerminator
Updated 11-22-2012 at 06:35 PM by NullTerminator

Looking into writing an android app that can scan some simple test and process it. Some solutions require installation of the android ndk in addition to the sdk. The native development kit (ndk) allows you to compile languages like C++ into a native .so library.

The ndk is required to get a shared library build for the Tesseract OCR engine. ref: tesseract ocr project at code.google. You may be able to find prebuilt binaries if lucky. You'll need the GCC compiler and cygwin to...
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Old

Eclipse And Perl epic-ide.org

Posted 11-17-2012 at 09:06 AM by NullTerminator
Updated 11-17-2012 at 01:34 PM by NullTerminator

Notes from past installation. May be incomplete
Performed onb eclipse helios 3.6 and Indigo 3.7
ActiveState perl.

Add paddwalker to perl
ppm install padwalker

Download site (I think this is the epic-ide site for eclipse)
Extract locally. Capture the site folder name

Go to eclipse Help | Install New Software | Add Site, Provide local Path

You might be able to have eclipse install it directly using the following...
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Old

MSSQL Tricks & Hints

Posted 10-04-2012 at 02:51 PM by NullTerminator
Updated 11-16-2012 at 01:40 PM by NullTerminator

Patching up leading zeroes
UPDATE TheTable
set FILE_NBR = replicate('0', 6-len(FILE_NBR) ) + FILE_NBR

Querying disk file sizes

use master

SELECT DB_NAME(DATABASE_ID) AS [DATABASE_NAME], name as FileName, Type_desc,
-- hmmmm 8k blocks?
CAST(( CAST(SIZE * 8 AS FLOAT) ) / 1024 AS VARCHAR) + ' MB' AS [SIZE],
CAST( (MAX_SIZE / 128) AS VARCHAR) + ' MB' AS [MAX_SIZE]
FROM SYS.MASTER_FILES

...
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Old

Java CAD and Imaging

Posted 09-27-2012 at 06:57 AM by NullTerminator
Updated 09-27-2012 at 07:08 AM by NullTerminator

Java LWJGL http://en.wikipedia.org/wiki/Lightwe...a_Game_Library

Archimedes CAD http://en.wikipedia.org/wiki/Archimedes_%28CAD%29

Google Java Cad http://www.google.com/search?q=java+cad

Java 2d cube rotator applet http://profs.etsmtl.ca/mmcguffin/learn/java/11-3d/

Java 3d links http://www.google.com/search?q=java.awt+3d

Graphics2d canvas, panel, etc

Sanselan image writer/reader http://commons.apache.org/imaging/ap...ase/index.html...
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