macros.xml

<?xml version="1.0" encoding="UTF-8"?>
<project name="Common Macros" xmlns:unless="ant:unless">
    <macrodef name="tool-exists">
        <attribute name="executable"
            description="Name of the tool to look for" />
        <attribute name="error"
            default="Tool @{executable} could not be found in the $PATH"
            description="Error message, which is issued, if the tool could not be found." />

        <sequential>
            <property environment="env" /> 
            <fail message="@{error}">
                <condition>
                    <and>
                        <not>
                            <available file="@{executable}" />
                        </not>
                        <not>
                            <available file="@{executable}" filepath="${env.PATH}" />
                        </not>
                    </and>
                </condition>
            </fail>
        </sequential>
    </macrodef>

    <macrodef name="php-tool-installed">
        <attribute name="executable"
            description="Name of the tool to look for" />
        <attribute name="package"
            description="Name of the package in which the executable can be found" />

        <sequential>
            <fail message="Install @{executable} using `php composer.phar require --dev @{package}`.">
                <condition>
                    <not>
                        <available file="@{executable}" filepath="${bindir}" />
                    </not>
                </condition>
            </fail>
        </sequential>
    </macrodef>
</project>