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It's also possible to assign Windows INI file values to IzPack dynamic variables. INI files are 3-dimensional configuration files with key-value pairs which are divided into several sections, following a certain syntax.

Using a  a dynamic variable assignment from a certain entry of an INI file is recognized by using the attribute file in the variable definition along with the attribute type set to "ini".

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Another facility of dynamic variable assignments is reading values from XML files using XPath queries. For the syntax of XPath see XML Path Language (XPath) for more information.

Using a dynamic variable assignment from a certain XML entry in a XML file is recognized by using the attribute file in the variable definition along with the attribute type set to "xml".

Specific attributes:

• file
  The XML file path to read from.
• type := "options" | "ini" | "xml" (optional, defaults to "options")
  The file type, must be "XML" to assume a XML file.
• key
  The XPath path to the entry to read the value for.

Example:

<dynamicvariables>

    <variable name="XMLReadTest.1" checkonce="true" ignorefailure="false"
              file="${INSTALL_PATH}/../old_installation/test.xml" type="xml"
              key="/installations/installation[path='/usr/local']/title[@lang='en']/text()"/>

    <variable name="XMLReadTest.2" checkonce="true" ignorefailure="false"
              file="${INSTALL_PATH}/../old_installation/test.xml" type="xml"
              key="//title[@lang='en']/text()"/>

</dynamicvariables>

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