Landon Curt Noll
d2a42f42e8
We we move 1988-2004 entries from all of a year's winning entries in a single directory to each winner being in their own sub-directory under the given year directory.
120 lines
4.5 KiB
Plaintext
120 lines
4.5 KiB
Plaintext
Best Utility:
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Anthony C Howe
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Mortice Kern Systems Inc. #CL-23
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35 King St. N 268 Phillip St.
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Waterloo, On Waterloo, On
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Canada, N2J 2W9 Canada, N2L 6G9
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Judges' comments:
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Make and run with a filename (writable or to be created) as an argument.
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For example, try:
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make ant
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cp ant.hint hill
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ant hill
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Note that some old BSD systems may have trouble compiling this entry.
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They may complain about 'idlok' being undefined. You can fix this
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by changing line 26 from:
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2;initscr();d=LINES;raw();noecho();idlok(stdscr,1);if(0<(i= ...
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to:
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2;initscr();d=LINES;raw();noecho();if(0<(i= ...
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***or*** update to a modern version of Un*x. :-) If you have source,
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you can use this entry to help in your upgrade.
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You may need to change the makefile depending on what type of system
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you are running. See the notes in ansi.mk or common.mk.
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The author was kind enough to supply a list of references below,
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in case you are still confused after read the source! :-)
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Selected notes from the author:
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Ant's Editor vIOCCC91
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Text files consists of lines of printable text or tab characters.
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A line can be of arbitrary length and is delimited by either a
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newline or the end of file. Carriage return is mapped to newline
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on input and ignored on output. Tab stops are every eight columns.
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Non-printable characters may have unpredictable results depending
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on the implementation of CURSES.
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COMMANDS
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h j k l left, down, up, right cursor movement
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H J K L word left, page down, page up, word right
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[ ] beginning and end of line
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t b top and bottom of file
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i enter insert mode, formfeed to quit
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x delete character under the cursor
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W write buffer to file
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R refresh the screen
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Q quit
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EXIT STATUS
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0 success
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2 missing edit filename
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The BUF size should be set at compile time to 32767. This value
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was used because the Sozobon C compiler for the Atari ST has 16
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bit ints and a limit on the size of arrays & structures of 32k.
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Also the WatCom C compiler for the PC also has 16 bits ints. On
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machines that have 32 bit ints (most unix boxes), a larger value
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for BUF could be used.
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It is recommend that compact memory model be used on PC class
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machines. Small memory model may work too provided BUF is not
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too large.
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The character constants '\b', '\f', '\n', '\r', '\t' are used
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in order to provide more portable code, since the compiler should
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handle the translation of them into the native character set.
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Note that '\f' (formfeed) was used to exit insert mode because
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K&R C had no escape constant for the escape-key.
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My goals for this project were to learn and experiment with the
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Buffer Gap Scheme [Fin80][net90], write a useful and *portable*
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programme, and meet the requirements of the IOCCC. I initially
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planned to have a mini CURSES built-in like the IOCCC Tetris entry
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from a previous year, however this was not as portable as using a
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CURSES library with TERMINFO/TERMCAP support.
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I plan to post followups such as unobfuscated versions and bugs
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fixes to comp.editors. Reposts of the editor.101, gap.doc, and
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editor.102 can be found in the same group every so often.
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This entry will display a file with long lines, but has trouble
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scrolling the screen with long lines. Paging up and down should
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work correctly, however.
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REFERENCES
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[Fin80] Craig A. Finseth, "Theory and Practice of Text Editors or
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A Cookbook For An EMACS", TM-165, MIT Lab. for Computer
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Science
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[KeP81] Kernighan & Plauger, "Software Tools in Pascal",
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Addison-Wesley, 81, chapter 6
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[Mil86] Eugene W. Myers & Webb Miller, "Row-replacement Algorithms
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for Screen Editors", TR 86-19, Dept. of Computer Science,
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U. of Arizona
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[MyM86] Eugene W. Myers & Webb Miller, "A simple row-replacement
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method", TR 86-28, Dept. of Computer Science, U. of Arizona
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[Mil87] Webb Miller, "A Software Tools Sampler", Prentice Hall, 87
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ISBN 0-13-822305-X, chapter 5
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[net90] "Editor 101/102" articles from comp.editors
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Copyright (c) 1991, Landon Curt Noll & Larry Bassel.
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All Rights Reserved. Permission for personal, educational or non-profit use is
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granted provided this this copyright and notice are included in its entirety
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and remains unaltered. All other uses must receive prior permission in writing
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from both Landon Curt Noll and Larry Bassel.
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