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The package definition file package.xml, version 2.0

Chapter 16. The package definition file package.xml, version 2.0

A quick and dirty guide to version 2.0 of the package definition file package.xml

The package definition file package.xml is, as the name already implies, a well-formed XML file that contains all information about a PEAR package. Version 2.0 contains several important enhancements over version 1.0, including

  • Channel support

  • Binary PECL packages support (not fully implemented in PEAR 1.4.0)

  • More specific dependency resolution

For those of you with an existing package.xml version 1.0, you can create an approximate equivalent package using the


$ pear convert
     

command. Note that as of version 1.6.0a1, PEAR_PackageFileManager supports package.xml 2.0 with the PEAR_PackageFileManager2 class.

PECL developers: for more information on pecl-specific features, read here.

An example file with all elements

<?xml version="1.0"?>
<package version="2.0" xmlns="http://pear.php.net/dtd/package-2.0"
    xmlns:tasks="http://pear.php.net/dtd/tasks-1.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://pear.php.net/dtd/tasks-1.0
http://pear.php.net/dtd/tasks-1.0.xsd
http://pear.php.net/dtd/package-2.0
http://pear.php.net/dtd/package-2.0.xsd">
 <name>PEAR</name>
 <channel>pear.php.net</channel>
 <summary>Any one-line summary</summary>
 <description>any static long description.
 This text should not change very much between releases, use the "notes" tag
 for release notes
 </description>
 <lead>
  <name>Greg Beaver</name>
  <user>cellog</user>
  <email>cellog@php.net</email>
  <active>yes</active>
 </lead>
 <date>2005-02-26</date>
 <time>20:30:13</time> <-- note: <time> is optional -->
 <version>
  <release>1.4.0a2</release>
  <api>1.4.0</api>
 </version>
 <stability>
  <release>alpha</release>
  <api>alpha</api>
 </stability>
 <license uri="http://www.php.net/license">PHP License</license>
 <notes>
 Put release notes here.
 They can be multi-line
 </notes>
 <contents>
  <dir name="/">
   <dir name="PEAR">
    <dir name="ChannelFile">
     <file name="Parser.php" role="php" />
    </dir> <!-- /PEAR/ChannelFile -->
    <file name="Dependency2.php" role="php">
     <tasks:replace from="@PEAR-VER@" to="version" type="package-info"/>
    </file>
   </dir> <!-- /PEAR -->
   <dir name="scripts" baseinstalldir="/">
    <file name="pear.bat" role="script">
     <tasks:replace from="@bin_dir@" to="bin_dir" type="pear-config" />
     <tasks:replace from="@php_bin@" to="php_bin" type="pear-config" />
     <tasks:replace from="@include_path@" to="php_dir" type="pear-config" />
     <tasks:windowseol/>
    </file>
    <file name="pecl.bat" role="script">
     <tasks:replace from="@bin_dir@" to="bin_dir" type="pear-config" />
     <tasks:replace from="@php_bin@" to="php_bin" type="pear-config" />
     <tasks:replace from="@include_path@" to="php_dir" type="pear-config" />
     <tasks:windowseol/>
    </file>
    <file name="pear.sh" role="script">
     <tasks:replace from="@php_bin@" to="php_bin" type="pear-config" />
     <tasks:replace from="@php_dir@" to="php_dir" type="pear-config" />
     <tasks:replace from="@pear_version@" to="version" type="package-info" />
     <tasks:replace from="@include_path@" to="php_dir" type="pear-config" />
     <tasks:unixeol/>
    </file>
    <file name="pecl.sh" role="script">
     <tasks:replace from="@php_bin@" to="php_bin" type="pear-config" />
     <tasks:replace from="@php_dir@" to="php_dir" type="pear-config" />
     <tasks:replace from="@pear_version@" to="version" type="package-info" />
     <tasks:replace from="@include_path@" to="php_dir" type="pear-config" />
     <tasks:unixeol/>
    </file>
    <file name="pearcmd.php" role="php">
     <tasks:replace from="@php_bin@" to="php_bin" type="pear-config" />
     <tasks:replace from="@php_dir@" to="php_dir" type="pear-config" />
     <tasks:replace from="@pear_version@" to="version" type="package-info" />
     <tasks:replace from="@include_path@" to="php_dir" type="pear-config" />
    </file>
    <file name="peclcmd.php" role="php">
     <tasks:replace from="@php_bin@" to="php_bin" type="pear-config" />
     <tasks:replace from="@php_dir@" to="php_dir" type="pear-config" />
     <tasks:replace from="@pear_version@" to="version" type="package-info" />
     <tasks:replace from="@include_path@" to="php_dir" type="pear-config" />
     <tasks:footask/>
    </file>
   </dir> <!-- /scripts -->
   <file name="package.dtd" role="data" />
   <file name="postinstall.php" role="php">
    <tasks:postinstallscript/>
   </file>
   <file name="template.spec" role="foo" />
  </dir> <!-- / -->
 </contents>
 <compatible>
  <name>FooPackage</name>
  <channel>pear.php.net</channel>
  <min>1.3.0</min>
  <max>1.5.0</max>
 </compatible>
 <dependencies>
  <required>
   <php>
    <min>4.2</min>
    <max>6.0.0</max>
   </php>
   <pearinstaller>
    <min>1.4.0dev13</min>
   </pearinstaller>
   <package>
    <name>Archive_Tar</name>
    <channel>pear.php.net</channel>
    <min>1.1</min>
    <recommended>1.2</recommended>
   </package>
   <package>
    <name>Foo</name>
    <uri>http://www.example.com/Foo-1.2.0.tgz</uri>
   </package>
   <extension>
    <name>xml</name>
   </extension>
   <os>
    <name>windows</name>
    <conflicts/>
   </os>
   <arch>
    <pattern>*-i?86-*-*</pattern>
   </arch>
  </required>
  <optional>
   <package>
    <name>PEAR_Frontend_Web</name>
    <channel>pear.php.net</channel>
    <min>0.5.0</min>
   </package>
   <package>
    <name>PEAR_Frontend_Gtk</name>
    <channel>pear.php.net</channel>
    <min>0.4.0</min>
   </package>
  </optional>
  <group name="remoteinstall" hint="adds the ability to install packages to a remote ftp server">
   <package>
    <name>Net_FTP</name>
    <channel>pear.php.net</channel>
    <min>1.3.0RC1</min>
    <recommended>1.3.0</recommended>
   </package>
  </group>
  <group name="webinstaller" hint="PEAR's web-based installer">
   <package>
    <name>PEAR_Frontend_Web</name>
    <channel>pear.php.net</channel>
    <min>0.5.0</min>
   </package>
  </group>
  <group name="gtkinstaller" hint="PEAR's PHP-GTK-based installer">
   <package>
    <name>PEAR_Frontend_Gtk</name>
    <channel>pear.php.net</channel>
    <min>0.4.0</min>
   </package>
  </group>
 </dependencies>
 <usesrole>
  <role>foo</role>
  <package>Foo</package>
  <channel>pear.example.com</channel>
 </usesrole>
 <usestask>
  <task>footask</task>
  <package>Footask</package>
  <channel>pear.example.com</channel>
 </usestask>
 <phprelease>
  <installconditions>
   <os>
    <name>windows</name>
   </os>
  </installconditions>
  <filelist>
   <install as="pear.bat" name="scripts/pear.bat" />
   <install as="pecl.bat" name="scripts/pecl.bat" />
   <install as="pearcmd.php" name="scripts/pearcmd.php" />
   <install as="peclcmd.php" name="scripts/peclcmd.php" />
   <ignore name="scripts/pear.sh" />
   <ignore name="scripts/pecl.sh" />
  </filelist>
 </phprelease>
 <phprelease>
  <filelist>
   <install as="pear" name="scripts/pear.sh" />
   <install as="pecl" name="scripts/pecl.sh" />
   <install as="pearcmd.php" name="scripts/pearcmd.php" />
   <install as="peclcmd.php" name="scripts/peclcmd.php" />
   <ignore name="scripts/pear.bat" />
   <ignore name="scripts/pecl.bat" />
  </filelist>
 </phprelease>
 <changelog>
  <release>
   <version>
    <release>1.3.5</release>
    <api>1.3.0</api>
   </version>
   <stability>
    <release>stable</release>
    <api>stable</api>
   </stability>
   <date>2005-02-26</date>
   <license uri="http://www.php.net/license/3_0.txt">PHP License</license>
   <notes>
 * fix Bug #3505: pecl can't install PDO
 * enhance pear run-tests dramatically
 * fix Bug #3506: pear install should export the pear version into the environment

   </notes>
  </release>
  <release>
   <version>
    <release>1.4.0a1</release>
    <api>1.4.0</api>
   </version>
   <stability>
    <release>alpha</release>
    <api>alpha</api>
   </stability>
   <date>2005-02-26</date>
   <license uri="http://www.php.net/license/3_0.txt">PHP License</license>
   <notes>
  This is a major milestone release for PEAR.  In addition to several killer features,
  every single element of PEAR has a regression test, and so stability is much higher
  than any previous PEAR release, even with the alpha label.

  New features in a nutshell:
  * full support for channels
  * pre-download dependency validation
  * new package.xml 2.0 format allows tremendous flexibility while maintaining BC
  * support for optional dependency groups and limited support for sub-packaging
  * robust dependency support
  * full dependency validation on uninstall
  * support for binary PECL packages
  * remote install for hosts with only ftp access - no more problems with
    restricted host installation
  * full support for mirroring
  * support for bundling several packages into a single tarball
  * support for static dependencies on a url-based package

  Specific changes from 1.3.5:
  * Implement request #1789: SSL support for xml-rpc and download
  * Everything above here that you just read
   </notes>
  </release>
 </changelog>
</package>
 

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