Transcript cvs commit [filename(s)]

The iiuf Java Package
Part II
Simon Schubiger and Oliver Hitz
DIUF, University of Fribourg
CVS
XML
Imaging
Utilities
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Outline
Introduction
CVS: Concurrent Versions System
XML/DOM
Java Imaging
Utilities
Conclusion
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Utilities
Introduction
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Goal: Share common source with
minimal overhead through CVS.
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21.02.2001:
• 1413 Classes
• 906 Source files
• 127141 lines of code
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Utilities
Concurrent Versions System
• Same source code, multiple developers
• Source code history management
• No more manual versioning (file1, file2, file3...)
• Who made a given change? When? Why? What
other changes at the same time?
• Different development branches
• Remote access
• Low bandwidth
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CVS Overview
• One central file repository
• Every developer works on a local copy of the
files
• By default, no locking of files (contrary to RCS)
• Conflicts are resolved manually
• Website:
• http://www.cvshome.org
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Repository Structure
• /home/iiufdev/cvsroot
• java
iiuf
edu
org
• rtsp
• grabx
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Unix Setup
• Become a member of the group "iiufdev" (for
file access privileges)
• Setup CVSROOT:
• setenv CVSROOT
:pserver:<user>@iiuf00:/home/iiufdev/cvsroot
• Login to CVS:
• cvs login
• Get a local copy of a project:
• cvs checkout <directory>
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Common Tasks
• Bring the local copy up to date:
• cvs update [filename(s)]
• Add a file to the repository:
• cvs add <filename>
• Commit changes:
• cvs commit [filename(s)]
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Common Tasks
• View revision history of a file:
• cvs log [filename(s)]
• View changes made to the local version:
• cvs diff [filename(s)]
• Get an older version:
• cvs update -r <revision> [filename(s)]
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Utilities
Conflicts
• Problem: two developers change the same file at
the same time
• Conflicts occur at "commit" time
• Different portion in the source code:
• changes are merged automatically
• Same portion:
• user is asked to resolve the conflict manually,
corresponding source code region is marked
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Utilities
Other Clients
• jCVS - Java CVS Client (http://www.jcvs.org)
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Other Clients
• MacCVS & WinCVS (http://www.cvsgui.org)
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Utilities
XML & DOM
• DOM: object representation of XML data
• wrapper for different XML parsers
• iiuf.dom.DOMUtils
• provides access to elements within a DOM
structure
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Imaging
• JAI: Java Advanced Imaging
• 100+ different image processing operations,
some native implementations
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add, subtract, composite...
rotate, scale, warp...
load/save on TIFF, GIF, JPEG...
complex images, (I)FFT...
extreme, histogram, mean...
convolve, edge extract...
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Imaging
• iiuf.jai provides extensions and utilities for JAI:
• DisplayImagePanel
• ImageViewer sample application
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Document Imaging
• Document analysis operators for JAI:
• RLSA
• Connected components analysis
• Projection profiles
• iiuf.das.ocr: Ready to use Java interface to the
ScanWorX OCR program
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iiuf.log.Log
• Replacement for System.out.println()-style
debugging
• Single debugging console for distributed
applications
• Output sent using the Syslog protocol to a
standalone application on a specific machine
• Also handles exceptions
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• Servers
• List
• Overview
iiuf.log.Log
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iiuf.net.winnetou
• Simple web server
• Extensible through plugins
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Conclusion
• Use it and contribute!
• Documentation:
• http://www-iiuf.unifr.ch/iiufdev/doc
• 3rd-party libraries:
• /home/iiufdev/distr