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This element allows you to define variables to be used in the variables substitution system. Some variables are built-in, such as $INSTALL_PATH (which is the installation path chosen by the user).
To define variables, you place <variable> elements inside a <variables> or <dynamicvariables> element which are in turn children of the <installation> element.
If you define a variable named VERSION you need to type $VERSION in the files to parse. The variable substitutor will then replace it with the value that you specified in the <variables> or <dynamicvariables> element with the name VERSION.
Each <variable> tag takes the following attributes :
name: the variable namevalue: the variable value
Note that variable names are case-sensitive.
Here's a sample <variables> section :
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<variables> <variable name="app-version" value="1.4"/> <variable name="released-on" value="08/03/2002"/> </variables> |
Types of Variables
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The following variables are built-in and have values set by IzPack depending on the target system or information supplied by the user during the installation.
$INSTALL$APP_PATHNAME: the installation path on the target system, as chosen by the user$INSTALL_DRIVE: the drive letter part of the installation path on the target system, applies to Windows systems only.application name$APP_URL: the application URL$APP_VER: the application version$APPLICATIONS_DEFAULT_ROOT: the default path for applications$JAVA$CANONICAL_HOST_HOME: the JavaTM virtual machine home pathNAME: the fully qualified host name of the local machine including domain.$CLASS_PATH: the Class Path used mainly for Java Applications- $USER
$FILE_HOMESEPARATOR: the user's home directory path$USERfile separator on the installation system $HOST_NAME: the user name$APP_NAME: the application name$APP_URL: the application URL$APP_VER: the application versionhost name of the local machine without domain.$INSTALL_DRIVE: the drive letter part of the installation path on the target system, applies to Windows systems only.$INSTALLER_MODE: the installer mode used by the user i.e. auto, console or gui (available since 5.2.2)$INSTALL_PATH: the installation path on the target system, as chosen by the user$ISO2_LANG: the ISO2 language code of the selected langpack.$ISO3_LANG: the ISO3 language code of the selected langpack.$IP_ADDRESS: the IP Address of the local machine.- $HOST
$JAVA_NAMEHOME: the HostName of the local machine.$FILE_SEPARATOR: the file separator on the installation systemJavaTM virtual machine home path - $TargetPanel.dir.<platform>
For setting<platform>, see also: Use Cases.the fully qualified target installation directory for the target platform. IzPack choses the most closely matching directory according to the current platform.. $USER_HOME: the user's home directory path$USER_NAME: the user name
The following variables are defined but can have values redefined by the installation procedure:
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<conditions>
<condition type="variable" id="isFeatureEnabled">
<name>SYSTEM_feature_Enabled</name>
<value>true</value>
</condition>
</conditions> |
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