Ant: How to use apply task with identical source and target file -


i trying run apply task following command:

 jpegtran.exe -copy none -optimize -perfect ./images/file.jpg ./images/file.jpg

i apply recursively images. have tried following ant code jpegtran says invalid arguments.

<target name="optimize.images.jpg"> <apply executable="jpegtran.exe" dir="${src_dir}/public/assets/" parallel="false" verbose="true" resolveexecutable="true" force="true" vmlauncher="true"> <arg value="-copy none"/> <arg value="-optimize"/> <arg value="-perfect"/> <srcfile/> <targetfile/> <fileset dir="${src_dir}/public/assets/images" casesensitive="yes"> <include name="**/*.jpg"/> </fileset> <mapper type="identity"/> </apply> </target>

what wrong ant code?

one item needs changed nested <arg> element -copy none. since there space in argument, use line attribute instead of value. see apache ant command line arguments.

<target name="optimize.images.jpg"> <apply executable="jpegtran.exe" dir="${src_dir}/public/assets/" parallel="false" verbose="true" resolveexecutable="true" force="true" vmlauncher="true"> <arg line="-copy none"/> <arg value="-optimize"/> <arg value="-perfect"/> <srcfile/> <targetfile/> <fileset dir="${src_dir}/public/assets/images" casesensitive="yes"> <include name="**/*.jpg"/> </fileset> <mapper type="identity"/> </apply> </target>

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