diff options
| author | Luke Shumaker <LukeShu@sbcglobal.net> | 2009-07-13 13:23:09 -0400 |
|---|---|---|
| committer | Luke Shumaker <lukeshu@sbcglobal.net> | 2015-06-26 00:29:27 -0600 |
| commit | 3cdfa2a24cd8279ab5d5204d598f319b175940f2 (patch) | |
| tree | 9914735d5de9867c38f362481121e70bbf7c9719 /docs | |
| parent | 2bc56a5316345629e4ff451f0640230bf247f976 (diff) | |
rvs 0.6.0 -- major restructuring to:
* use a proper build directory, rather than just extracting into /
* declare functions in a POSIX/SUS3 compliant way
* support systems with out GNU bash, or GNU bash in a place other than /bin/bash
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/README.xhtml | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/docs/README.xhtml b/docs/README.xhtml new file mode 100644 index 0000000..3d6c612 --- /dev/null +++ b/docs/README.xhtml @@ -0,0 +1,116 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE html + PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" + "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> +<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> +<head> + <title>rvs $$VER$$</title> + <meta http-equiv="content-type" content="text/html; charset=utf-8"/> +</head> +<body> +<h1>rvs $$VER$$</h1> +<p>rvs is a basic versioning system I've been writing. If you don't know what that means, it isn't for you (at least not at this stage in development).</p> + +<h2>installation</h2> +<p>After you have obtained the source code, cd into the directory and run:<code> +<br />./configure +<br />make install +</code></p> +<p>instead of using options to <kbd>./configure</kbd> like <samp>./configure --prefix=/usr/bin</samp>, all configuration options (that effect the installation, not the build process), are stored in the file <kbd>Variables</kbd>. Many of the source files use variables in the form <samp>$$VARNAME$$</samp>. The <kbd>./configure</kbd> script replaces each instance of this with the value defined in <kbd>Variables</kbd>. <kbd>Variables</kbd> contains a variable name, tab character, then value on each line.</p> + +<ul> + <li><kbd>/etc/abomination/modules/rvs/commit</kbd></li> + <li><kbd>/etc/abomination/modules/rvs/commit.d</kbd></li> + <li><kbd>/etc/abomination/modules/rvs/commit.f</kbd></li> + <li><kbd>/etc/abomination/modules/rvs/get</kbd></li> + <li><kbd>/etc/abomination/modules/rvs/get.d</kbd></li> + <li><kbd>/etc/abomination/modules/rvs/get.f</kbd></li> + <li><kbd>/etc/abomination/modules/rvs/init</kbd></li> + <li><kbd>/etc/abomination/modules/rvs/lib/rvsdb</kbd></li> + <li><kbd>/etc/abomination/modules/rvs/lib/stdio</kbd></li> + <li><kbd>/usr/bin/rvs</kbd></li> +</ul> + +<h2>system requirements</h2> +<p>Pretty much any *nix system should be able to run rvs, provided it has bash, and bash is installed at <kbd>/bin/bash</kbd> (e.g.: <a href="http://www.freebsd.org/">FreeBSD</a> has it at <kbd>/usr/bin/bash</kbd>, so you should set up a symlink). rvs is not designed for Windows, but should be able to run in bash if you have some *nix pack installed.</p> +<p>To my knowledge, this is the absolute requirements (all need to be in your PATH):</p> +<ul> + <li><a href="http://www.gnu.org/software/bash/">bash</a> (needs to be installed at <kbd>/bin/bash</kbd>)</li> + <li>cat (included in <a href="http://www.gnu.org/software/coreutils/">GNU Core Utils</a>)</li> + <li>cp (included in <a href="http://www.gnu.org/software/coreutils/">GNU Core Utils</a>)</li> + <li>cut (included in <a href="http://www.gnu.org/software/coreutils/">GNU Core Utils</a>)</li> + <li>echo (included in <a href="http://www.gnu.org/software/coreutils/">GNU Core Utils</a>)</li> + <li>mkdir (included in <a href="http://www.gnu.org/software/coreutils/">GNU Core Utils</a>)</li> + <li>rm (included in <a href="http://www.gnu.org/software/coreutils/">GNU Core Utils</a>)</li> + <li>sed (included in <a href="http://www.gnu.org/software/coreutils/">GNU Core Utils</a>)</li> + <li>sha1sum (included in <a href="http://www.gnu.org/software/coreutils/">GNU Core Utils</a>)</li> + <li>tempfile (included in <a href="http://www.gnu.org/software/coreutils/">GNU Core Utils</a>)</li> + <li>tr (included in <a href="http://www.gnu.org/software/coreutils/">GNU Core Utils</a>)</li> +</ul> + +<h2>usage</h2> +<dl> + <dt>create repository in the current directory</dt> + <dd><kbd>rvs init</kbd></dd> + <dt>check in the current directory</dt> + <dd><kbd>rvs commit</kbd> This will return a commit id. You need this to check the revision back out.</dd> + <dt>check out to the current directory</dt> + <dd><kbd>rvs get <var>ID</var></kbd> This checks out commit <var>ID</var></dd> +</dl> +<p>The system will bork if you have filenames with spaces or newlines. Why? Because you haven't written a patch to fix it yet.</p> +<p>Feel free to push to the <a href="https://code.launchpad.net/~lukeshu/+junk/rvs-release">launchpad repository</a>.</p> + +<h2>hacking</h2> +<p>Again, here is a list of all files in <kbd>rvs-0.5.10.tar.gz</kbd>:</p> +<ul> + <li><kbd>/etc/abomination/modules/rvs/commit</kbd></li> + <li><kbd>/etc/abomination/modules/rvs/commit.d</kbd></li> + <li><kbd>/etc/abomination/modules/rvs/commit.f</kbd></li> + <li><kbd>/etc/abomination/modules/rvs/get</kbd></li> + <li><kbd>/etc/abomination/modules/rvs/get.d</kbd></li> + <li><kbd>/etc/abomination/modules/rvs/get.f</kbd></li> + <li><kbd>/etc/abomination/modules/rvs/init</kbd></li> + <li><kbd>/etc/abomination/modules/rvs/lib/rvsdb</kbd></li> + <li><kbd>/etc/abomination/modules/rvs/lib/stdio</kbd></li> + <li><kbd>/usr/bin/rvs</kbd></li> +</ul> +<p>These are all shell scripts and may be modified directly. I have designed this system to be extremely modular. As you may have figured out, each bit on functionality is in it's own script, and <kbd>/usr/bin/rvs</kbd> is just a wrapper for them. If you wish to move the directory with the sub-modules, all you have to do is update the variablle <code><var>RVSDIR</var></code> towards the beginning of <kbd>/usr/bin/rvs</kbd>.</p> +<p><kbd>commit</kbd> actually does take a parameter. It can commit any file or directory. It works as it does because if no file is given, it defaults to <kbd>./</kbd>. If it is given a directory (as it is by default), it loops through each file in the directory and commits them (by calling itself). In order to actually commit a file or directory it calls <code>rvs commit.<var>type</var></code> where <var>type</var> is the standard unix file-type code:</p> + +<table> + <tr><td><pre><em>b</em>lock (buffered) special</pre></td><td>b</td></tr> + <tr><td><pre><em>c</em>haracter (unbuffered) special</pre></td><td>c</td></tr> + <tr><td><pre><em>d</em>irectory </pre></td><td>d</td></tr> + <tr><td><pre>named <em>p</em>ipe (FIFO) </pre></td><td>p</td></tr> + <tr><td><pre>regular <em>f</em>ile </pre></td><td>f</td></tr> + <tr><td><pre>symbolic <em>l</em>ink </pre></td><td>l</td></tr> + <tr><td><pre><em>d</em>ocket </pre></td><td>s</td></tr> + <tr><td><pre><em>d</em>oor (Solaris only) </pre></td><td>D</td></tr> +</table> +<p>As you probably noticed, only directories and regular files have been implemented in this release. <kbd>get</kbd> works in much the same way. If you implement any other file types, save the commit and get functions accordingly, and uncomment the line in <kbd>/etc/abomination/modules/rvs/commit</kbd>. Any commit function takes a filename as an argument and outputs the according commit id to stdout. Any get function takes the commit id as an argument and uses stdout only if verbose, or to report errors. So the modules communicate via pipes, which is generally considered bad-design, and libraries should be used. I deliberatly broke this because this way:</p> +<ol> + <li>incompatible licences can be used for different modules</li> + <li>modules can be added/removed on the fly</li> + <li>one can use any lanugage to write new modules, without having to worry about bindings</li> +</ol> + +<h3>TODO</h3> +<ul> + <li>implment other unix file types (see above)</li> + <li>add real option handling (code from another project is provided in <kbd>/usr/bin/rvs</kbd>)</li> + <li>write real documentation</li> + <li>implment a parent/child tree<ul> + <li>implement branch ids (NOTE: <q>wch</q> should be used to refer to the latest commit in a branch)</li> + </ul></li> + <li>implement tags</li> + <li>owner/filepermissions/timestamps</li> + <li>usernames/author</li> +</ul> + +<p>I have set up bazaar repository at <a href="https://code.launchpad.net/~lukeshu/+junk/rvs-release">Launchpad</a>. Only until rvs becomes self-hosting.</p> +<p>If anyone needs any help, let me know. +<br />~ Luke Shumaker <<a href="mailto:lukeshu@sbcglobal.net">LukeShu@sbcglobal.net</a>> +<br />Happy Hacking!</p> +</body> +</html> + |