import cinit from unix.schottelius.org
Signed-off-by: Nico Schottelius <nico@ikn.schottelius.org>
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Coding style
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============
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Nico Schottelius <nico-cinit]at[schottelius.org>
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0.1, for cinit, Initial version from 2006-11-13
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:Author Initials: NS
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This document describes the coding style used in cinit.
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Indent
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------
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Indent the code by 3 spaces for each level.
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Indent variable names, so the names begin all at the same position.
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Use three spaces to place them.
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Whitespaces
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-----------
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Where to put or avoid whitespaces (space or linefeed (lf)).
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Spaces
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~~~~~~
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- After closing brace "if(test) return 0;"
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- Spaces before and after '=', '>', '<', '==', '!='', '>=', '<=', '>>', '<<', '&', '&&', '|', '||'
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- After start of comment and before end of comment: '/* text */'
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After ')', ','
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No spaces
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~~~~~~~~~
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- Within braces and code "(!test)",
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- Before braces "if(code)"
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- No space before ), so if '))', do not put a space after the first ')'
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Linebreaks
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~~~~~~~~~~
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This somehow includes the setting of braces (indirectly through (not) setting
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spaces.
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If
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^^
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Put the if, the braces and the opening curly brace on one line,
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put the closing one together with `else` and the new opening
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curly brace on one line:
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------------------------------------------------------------------------------
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if(...) {
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/* code */
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} else {
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/* else: code */
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}
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------------------------------------------------------------------------------
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While
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^^^^^
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------------------------------------------------------------------------------
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while(condition) {
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/* repeat */
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}
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------------------------------------------------------------------------------
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Do-While
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^^^^^^^^
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------------------------------------------------------------------------------
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do {
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/* something */
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} while(running);
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------------------------------------------------------------------------------
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Switch
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^^^^^^
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------------------------------------------------------------------------------
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switch(value) {
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case DO_SOMETHING:
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/* code */
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break;
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default:
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break;
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}
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------------------------------------------------------------------------------
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Where to put curly braces
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-------------------------
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Functions
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~~~~~~~~~
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Opening and closing curly braces are placed on a seperate row:
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------------------------------------------------------------------------------
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int func(int params)
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{
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body
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}
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------------------------------------------------------------------------------
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If, else, while, do-while
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~~~~~~~~~~~~~~~~~~~~~~~~~
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See above.
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Comments
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---------
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where necessery, do not state the obvious in comments:
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/* this code increments tmp */
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++tmp;
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If there is more than one line containing a comment, try to adjust them
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so they look the same in width and position:
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------------------------------------------------------------------------------
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int illuminati = 23; /* do not want to comment that */
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int the_answer_to_everything = 42; /* 42. */
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[...]
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while(illuminati < the_answer_to_everything) { /* only try before them */
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overtake_world(&self); /* overtake is complex */
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}
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------------------------------------------------------------------------------
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Header
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-------
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Put a header into each file, containing:
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- Date of file being put into existence (year is enough)
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- Name and e-mail (obfuscated if you want) of the author(s)
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- Description of the function
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- Copyright statement (if not included GPLv2 or later is assumed)
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Includes
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~~~~~~~~
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Include system headers first, then place own headers. Comment the includes,
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wherefore you added them. Example:
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------------------------------------------------------------------------------
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#include <unistd.h> /* write */
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#include "cinit.h> /* cinit_ipc_* */
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------------------------------------------------------------------------------
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