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<div class="document" id="graphicsmagick-mercurial">
<h1 class="title">GraphicsMagick Mercurial</h1>
<!-- -*- mode: rst -*- -->
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<div class="contents topic" id="contents">
<p class="topic-title">Contents</p>
<ul class="simple">
<li><p><a class="reference internal" href="#what-is-mercurial" id="id1">What is Mercurial?</a></p></li>
<li><p><a class="reference internal" href="#web-access" id="id2">Web Access</a></p></li>
<li><p><a class="reference internal" href="#cloning-the-mercurial-repository" id="id3">Cloning the Mercurial Repository</a></p></li>
<li><p><a class="reference internal" href="#selecting-a-version-of-the-code" id="id4">Selecting a version of the code</a></p></li>
<li><p><a class="reference internal" href="#updating-from-the-mercurial-repository" id="id5">Updating from the Mercurial Repository</a></p></li>
<li><p><a class="reference internal" href="#mercurial-software" id="id6">Mercurial Software</a></p></li>
<li><p><a class="reference internal" href="#mercurial-for-graphicsmagick-developers" id="id7">Mercurial for GraphicsMagick Developers</a></p></li>
<li><p><a class="reference internal" href="#ssh-public-keys-for-hg-graphicsmagick-org" id="id8">SSH Public Keys For hg.GraphicsMagick.org</a></p></li>
<li><p><a class="reference internal" href="#email-notifications" id="id9">Email Notifications</a></p></li>
<li><p><a class="reference internal" href="#mercurial-topics" id="id10">Mercurial Topics</a></p></li>
</ul>
</div>
<p>The GraphicsMagick source code is available via <a class="reference external" href="https://www.mercurial-scm.org/">Mercurial</a>. <a class="reference external" href="https://www.mercurial-scm.org/">Mercurial</a>
is a convenient way for developers from around the country or world to
download the GraphicsMagick source, fix bugs, or add new features.
Due to the way <a class="reference external" href="https://www.mercurial-scm.org/">Mercurial</a> works, it may also be used to manage local
changes to GraphicsMagick.</p>
<div class="section" id="what-is-mercurial">
<h1><a class="toc-backref" href="#id1">What is Mercurial?</a></h1>
<p><a class="reference external" href="https://www.mercurial-scm.org/">Mercurial</a> (also known as <cite>Hg</cite> due to the abbreviation for Mercury in
the periodic table of the elements) is a modern source control system
which provides anyone who clones a repository with a stand-alone local
repository containing the full development history and the ability to
select any version of the code. Since the local repository is
fully-functional, you may use the same repository to manage your local
changes to GraphicsMagick code and you may use the repository to share
your changes with others.</p>
</div>
<div class="section" id="web-access">
<h1><a class="toc-backref" href="#id2">Web Access</a></h1>
<p>The <a class="reference external" href="http://hg.code.sf.net/p/graphicsmagick/code/">GraphicsMagick repository at SourceForge</a> and <a class="reference external" href="https://hg.osdn.net/view/graphicsmagick/GM">GraphicsMagick
repository at OSDN</a> web interfaces are available which may be used to
interactively view the latest versions of files (or the changes to
files) using your web browser. These two servers will be updated at
about the same time so they should normally contain the same content.</p>
</div>
<div class="section" id="cloning-the-mercurial-repository">
<h1><a class="toc-backref" href="#id3">Cloning the Mercurial Repository</a></h1>
<p>To get the tree and place it in a sub-directory of your current working
directory, issue the command to one of the two public servers:</p>
<pre class="literal-block">hg clone http://hg.code.sf.net/p/graphicsmagick/code GM</pre>
<p>or:</p>
<pre class="literal-block">hg clone https://hg.osdn.net/view/graphicsmagick/GM</pre>
<p>The repository is large (e.g. 239MB of Hg content, resulting in 299MB
after files are extracted), so some time may be required to transfer
all the changesets. Patience is a virtue!</p>
<p>Please note that since the introduction of an HTTP load balancer,
SourceForge has become unreliable when cloning with the default http
protocol. Due to this, using ssh protocol may be required. Any
SourceForge user who has submitted a SSH private key to SourceForge
may use Mercurial over SSH to clone the repository. The ssh clone
syntax looks like this (replacing <cite>YOURID</cite> with your SourceForge user
name):</p>
<blockquote>
<p>hg clone <a class="reference external" href="ssh://YOURID@hg.code.sf.net/p/graphicsmagick/code">ssh://YOURID@hg.code.sf.net/p/graphicsmagick/code</a> GM</p>
</blockquote>
</div>
<div class="section" id="selecting-a-version-of-the-code">
<h1><a class="toc-backref" href="#id4">Selecting a version of the code</a></h1>
<p>By default the cloned directory is populated with files from the
<cite>default</cite> (i.e. head) branch of the code, which is where active
development happens.</p>
<p>If you require a specific release of GraphicsMagick (e.g. 1.3.40), you may select it like:</p>
<pre class="literal-block">hg update -r GraphicsMagick-1_3_40</pre>
<p>or if you require a specific branch of GraphicsMagick (e.g. 1.3), you may use:</p>
<pre class="literal-block">hg update -r GraphicsMagick-1_3</pre>
<p>or you may request the files which were current on a specific date:</p>
<pre class="literal-block">hg update -d 2009-01-14</pre>
<p>Use:</p>
<pre class="literal-block">hg branches</pre>
<p>to see the available branches, and:</p>
<pre class="literal-block">hg tags</pre>
<p>to see the available release tags.</p>
</div>
<div class="section" id="updating-from-the-mercurial-repository">
<h1><a class="toc-backref" href="#id5">Updating from the Mercurial Repository</a></h1>
<p>To pull more changes from the repository, execute:</p>
<pre class="literal-block">hg pull</pre>
<p>and to make them visible in your files (via a merge), execute:</p>
<pre class="literal-block">hg update</pre>
<p>or just:</p>
<pre class="literal-block">hg pull -u</pre>
<p>The latter pulls down any updates into your local repository and
automatically does a merge.</p>
</div>
<div class="section" id="mercurial-software">
<h1><a class="toc-backref" href="#id6">Mercurial Software</a></h1>
<p>The best place to look for the latest version of Mercurial (<cite>Hg</cite>) is
at the <a class="reference external" href="https://www.mercurial-scm.org/">Mercurial</a> web site. Most free operating systems (e.g. Linux,
OpenIndiana, and *BSD) will offer a version of Mercurial as an
installable package and it may already be installed on your system.
We recommend use of <a class="reference external" href="https://tortoisehg.bitbucket.io/">TortoiseHg</a> on Microsoft Windows systems since it
provides a very nice graphical interface. <a class="reference external" href="https://tortoisehg.bitbucket.io/">TortoiseHg</a> is also
available on Linux and other systems.</p>
</div>
<div class="section" id="mercurial-for-graphicsmagick-developers">
<h1><a class="toc-backref" href="#id7">Mercurial for GraphicsMagick Developers</a></h1>
<p>Since <a class="reference external" href="https://www.mercurial-scm.org/">Mercurial</a> is a distributed revision control system, you may
clone the GraphicsMagick repository and work for days or weeks (making
your own local commits) before you decide to push some or all of your
changes to the GraphicsMagick development repository. GraphicsMagick
developers first commit changes to their own local respository, then
they push their changes to the GraphicsMagick development repository
at hg.graphicsmagick.org, later on (after testing and possible fixes)
I will push the changes to the stable repository at SourceForge.
Pushes to the stable repository at SourceForge should occur at least
as often as source code snapshots are produced.</p>
<p>The repository hierarchy is as follows:</p>
<ol class="arabic simple">
<li><p>Local</p></li>
</ol>
<blockquote>
<p>The developer makes any local changes and commits what he likes in his
own repository. It is best to commit often and whenever all the
files have been updated to implement a coherent change or feature
(including the ChangeLog file!) since <a class="reference external" href="https://www.mercurial-scm.org/">Mercurial</a> stores related
changes as a changeset along with the change message you enter.
When you push your repository, these changesets and messages are
preserved.</p>
</blockquote>
<ol class="arabic simple" start="2">
<li><p>Unstable</p></li>
</ol>
<blockquote>
<p>The unstable development repository is available via ssh at
"<a class="reference external" href="ssh://yourid@hg.GraphicsMagick.org//hg/GraphicsMagick">ssh://yourid@hg.GraphicsMagick.org//hg/GraphicsMagick</a>".</p>
<p>Where <cite>yourid</cite> is the Unix user ID on the GraphicsMagick server.
The <cite>yourid@</cite> part may left out if your client system uses the same
user ID as on the GraphicsMagick server.</p>
</blockquote>
<ol class="arabic simple" start="3">
<li><p>Stable</p></li>
</ol>
<blockquote>
<p>The stable repository is available via http at
"<a class="reference external" href="http://hg.code.sf.net/p/graphicsmagick/code">http://hg.code.sf.net/p/graphicsmagick/code</a>" or
"<a class="reference external" href="https://hg.osdn.net/view/graphicsmagick/GM">https://hg.osdn.net/view/graphicsmagick/GM</a>". Any changes in the
unstable development repository are pushed to the stable
repositories (by the developer responsible for this role) once any
necessary adjustments have been made, documentation files have been
generated, and the software test suite has passed on at least one
machine.</p>
</blockquote>
<p>To build your local development repository (as quickly as possible),
you may use these steps:</p>
<ol class="arabic">
<li><p>Clone the stable respository at SourceForge or OSDN:</p>
<pre class="literal-block">hg clone http://hg.code.sf.net/p/graphicsmagick/code GM
or
hg clone https://hg.osdn.net/view/graphicsmagick/GM GM</pre>
</li>
<li><p>Adjust your local repository path default to use the unstable repository.</p>
<p>Edit .hg/hgrc in your local repository so that it contains:</p>
<pre class="literal-block">[paths]
default = ssh://yourid@hg.GraphicsMagick.org//hg/GraphicsMagick</pre>
<p>where <cite>yourid</cite> is the Unix user ID on the GraphicsMagick server.</p>
</li>
<li><p>Pull any additional pending updates from the unstable repository:</p>
<pre class="literal-block">hg pull -u</pre>
</li>
</ol>
<p>Please note that when ssh access is used, Mercurial uncompresses any
data and sends it in uncompressed form. Mercurial expects that
compression will be enabled in ssh when needed. One way to enable ssh
compression is to put this in your local .hgrc:</p>
<pre class="literal-block">[ui]
ssh = ssh -C</pre>
<p>but ssh also provides its own way to enable compression on a
site-by-site basis (e.g. via .ssh/config). For example an entry in
.ssh/config will enable use of compression:</p>
<pre class="literal-block">Host hg.GraphicsMagick.org
Compression yes</pre>
</div>
<div class="section" id="ssh-public-keys-for-hg-graphicsmagick-org">
<h1><a class="toc-backref" href="#id8">SSH Public Keys For hg.GraphicsMagick.org</a></h1>
<p>For reference, these are the ssh public keys for the server at hg.GraphicsMagick.org:</p>
<p>DSS (DSA):</p>
<pre class="literal-block">ssh-dss 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 root@src</pre>
<p>RSA:</p>
<pre class="literal-block">ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEA1IuJDYT85qz/w6+vn5hkpzM5Ju5dsMeJD9GnATj3op5dhBWyfbaJpS7yyK2Vhhz26GBUvUtO3LGm0dQvdj83P3DX3aUuzfnC3Bc9dWeARomQPtDy9MfDikD6kqjD9/Lemgvv8I4Na9vUEmYvXUpTrtawJ4S7A7IctPnvKLPGA5+qY5XzMSE0wcOSBdbeV1PAIDOXYH2hKakZwtxXlvfTv6CZphz/jG5nmf+/Zlkr4yopNvPFbtd3vbaaqSuCoGHXKfmpRko2gXf6EGF92wXzbsE1tW3AkSJ2xdhFHRNmQEu2y9F1l9zb8IETBtKMWRJWAsPPpUSkht0DRsTXt/f+Zw== root@src</pre>
<p>ECDSA:</p>
<pre class="literal-block">ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBOrGQ6tjmZvm8w+GP7yLFJ1/vkImKkpXv7kPNxA0+Sfx6WCqAjV0pWP5MVCraP8SNbphL8jiS/x3WADXlf+R2KQ= root@src</pre>
<p>ED25519:</p>
<pre class="literal-block">ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIAtwIcJEBiSUWsB2sydInR76gE84Jp1rxmc8lTGPg5cB root@src</pre>
</div>
<div class="section" id="email-notifications">
<h1><a class="toc-backref" href="#id9">Email Notifications</a></h1>
<p>An email notification is sent to the <a class="reference external" href="https://lists.sourceforge.net/lists/listinfo/graphicsmagick-commit">graphicsmagick-commit</a> mailing
list at SourceForge whenever a change is submitted to the development
(unstable) repository. Subscribe to this list if you would like to be
notified by email of changes when they occur.</p>
</div>
<div class="section" id="mercurial-topics">
<h1><a class="toc-backref" href="#id10">Mercurial Topics</a></h1>
<ul class="simple">
<li><p><a class="reference external" href="https://www.mercurial-scm.org/wiki/MergeToolConfiguration">Merge Tool Configuration</a></p></li>
<li><p><a class="reference external" href="https://www.mercurial-scm.org/wiki/TipsAndTricks#Keep_.22My.22_or_.22Their.22_files_when_doing_a_merge">Keep "My" or "Their" files when doing a merge</a></p></li>
</ul>
</div>
</div>
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