I try to create a ant target which processes some GLSL shaders from an input directory, output them in another folder. And I'd like to avoid the processing if the output file already exists.
The executable I use can either take an output directory argument, or directly the output file path.
Currently, I have :
<target name="optimize_programs">
<apply executable="TOOLS/glsl_processor" dir="." verbose="true" >
<srcfile/>
<arg value="-output_directory=OUTPUT/PROGRAMS/" />
<fileset dir="INPUT/PROGRAMS/OPENGLES2" includes="**/*.glfx" />
<flattenmapper />
</apply>
</target>
The shaders are correctly processed, but the problem is they are processed each time, even when the output file already exists.
I suspect this is because the flattenmapper is not aware of the glsl_processor output.
I've tried to use to tell the glsl_processor where to output the file :
<target name="optimize_programs">
<apply executable="TOOLS/glsl_processor" dir="." verbose="true" >
<srcfile/>
<targetfile/>
<fileset dir="INPUT/PROGRAMS/OPENGLES2" includes="**/*.glfx" />
<flattenmapper />
</apply>
</target>
But I don't know how to make targetfile point to the output folder.
Any idea?
Thanks!
Well the answer is actually pretty simple:
<target name="optimize_programs">
<apply executable="TOOLS/glsl_processor" dir="INPUT/PROGRAMS/OPENGLES2/" dest="OUTPUT/PROGRAMS" verbose="true" >
<targetfile/>
<srcfile/>
<fileset dir="INPUT/PROGRAMS/OPENGLES2" includes="**/*.glfx" />
<mapper type="glob" from="*.glfx" to="*.glfx"/>
</apply>
</target>
I was just missing to fill the dest attribute of the apply task.
Related
I'm trying to figure out a way to have Ant run a .jar executable that accepts a file and spits out several generated files from the single input file. Specifically, I'm trying to generate compiled .js files and at the same time generate .map files.
Normally, the command would look something like this:
java -jar compiler-latest --js a.js --js_output_file a.min.js --create_source_map a.js.map
Where:
compiler-latest is the closure-compiler jar
a.js is the JavaScript file to compile
a.min.js is the compiled JavaScript
a.js.map is the source map
My Ant script looks like this:
<project name="BuildTest" default="Build" basedir=".">
<description>
HTML Build Test with Ant
</description>
<property name="src" location="../js"/>
<property name="dst" location="../build"/>
<property name="compiler" location="../compiler.jar"/>
<!--Make Dest Directory-->
<target name="-destination">
<mkdir dir="${dst}"/>
</target>
<!--Compile JS-->
<target name="Build" depends="-destination">
<!--Filesets and Mappers-->
<fileset id="sourceFiles" dir="${src}" includes="*.js"/>
<mapper id="compiledJs" type="glob" from="*.js" to="*.compiled.js"/>
<mapper id="mapJs" type="glob" from="*.js" to="*.js.map"/>
<!--Apply Everything-->
<apply executable="java" parallel="false" dest="${dst}">
<!--Closure Compiler-->
<arg value="-jar"/>
<arg path="${compiler}"/>
<arg value="--compilation_level=SIMPLE_OPTIMIZATIONS"/>
<!--Source Files-->
<arg value="--js"/>
<srcfile/>
<fileset refid="sourceFiles"/>
<!--Output Files-->
<arg value="--js_output_file"/>
<targetfile/>
<mapper refid="compiledJs"/>
<!--Source Maps-->
<arg value="--source_map_format=V3"/>
<arg value="--create_source_map"/>
<arg value="--js_output_file"/>
<targetfile/>
<mapper refid="mapJs"/>
</apply>
</target>
<!--Clean Project-->
<target name="Clean" description="Cleans the project">
<delete dir="${dst}"/>
</target>
</project>
However, I get an error saying I can't have multiple <targetfile/> elements
apply doesn't support multiple targetfile elements.
This is a workaround, not nice, but effective.
You can use an Ant <compositemapper> to construct the command line for your application.
Below is an illustration. You need to set relative="yes" on the task in order that filenames relative to the build directory are used in preference to absolute filenames, otherwise mapping is harder. To build the command line provide a list of mappers inside the <compositemapper>. Use a <mergemapper> for fixed parts (args like --output_file), and use a suitable other mapper, maybe a glob, when you need to generate filenames.
A series of mappers is needed to separate the arguments passed to the java by <apply>, otherwise they will be passed as one long arg with embedded spaces.
<apply executable="java" parallel="false" relative="yes">
<arg line="-jar compiler-latest --js"/>
<srcfile />
<targetfile />
<compositemapper>
<mergemapper to="--js_output_file" />
<globmapper from="*.js" to="*.compiled.js" />
<mergemapper to="--source_map_format=V3" />
<mergemapper to="--create_source_map" />
<globmapper from="*" to="*.map" />
</compositemapper>
<fileset dir="." includes="*.js" />
</apply>
For a simple test that leads to a command line like:
java -jar compiler-latest --js 1.js --js_output_file 1.compiled.js --source_map_format=V3 --create_source_map 1.js.map
I have an ant file to generate coffeescript documentation with docco. It works fine, except that it currently dumps all of the documentation file into the docs folder. I'd like the docs folder to mirror the structure of my scripts directory, rather than just having all files dumped flat into one directory.
<target name="documentation" description="Generate Docco Documentation for coffee files">
<apply executable="docco" verbose="true" force="true" failonerror="true">
<srcfile />
<fileset dir ="${src.script.dir}" >
<include name="**/*.coffee"/>
</fileset>
</apply>
</target>
I know docco has an --output argument, but my I'm not sure how to generate the docs directory path in the docs folder for each file in the fileset without going through them 1 by 1.
Using <srcfile> and <targetfile> parameters for apply task should solve the problem.
Here's an example that moves files with .a extension to .b extension:
<apply executable="mv" dir="./" relative="true">
<mappedresources>
<fileset dir="." includes="**/*.a"/>
</mappedresources>
<mapper type="glob" from="*.a" to="*.b"/>
<srcfile/>
<targetfile/>
</apply>
Take a look at Mapper type, too.
Try something like that for your case:
<target name="documentation" description="Generate Docco Documentation for coffee files">
<apply executable="docco" verbose="true" force="true" failonerror="true">
<srcfile />
<fileset dir ="${src.script.dir}" >
<include name="**/*.coffee"/>
</fileset>
<arg value="--output">
<mapper type="glob" from "*.coffee" to="*.html"/>
<targetfile/>
</apply>
</target>
Here is my ant apply task:
<apply executable="${7z.exec}" failonerror="true">
<arg value="x"/>
<fileset dir="${distdir}">
<include name="**/*.zip"/>
</fileset>
</apply>
7z.exec is an absolute path to the 7z.exe executable. How can I tell 7zip to deposit the unzipped files into the same folder as the .zip?
You need to use the 7z -o switch for the eXtract command and an Ant mapper to get just the path to the zip. The Ant apply task has a targetfile element that allows you extra flexibility in composing the command line for the task. Leads to something like:
<apply executable="${7z.exec}" failonerror="true">
<arg value="x"/>
<srcfile />
<targetfile prefix="-o" />
<mapper type="regexp" from="^(.*)/(.*\.zip)" to="\1" />
<fileset dir="${distdir}">
<include name="**/*.zip"/>
</fileset>
</apply>
I'm working on something similar to the question here: ANT script to compile all (css) LESS files in a dir and subdirs with RHINO
However, I'm having a hard time customizing this to one particular requirement:
If any .less files in dir.less change: Run LESS on just one file (as it imports the other less files, making a single, combined output).
This is the state of my current build.xml:
<target name="less" description="Compile LESS files">
<echo message="Checking for LESS file changes..."/>
<apply dir="${dir.less}" executable="${tool.less}" parallel="false" failonerror="true">
<fileset dir="${dir.less}" includes="*.less" />
<srcfile/>
<mapper type="glob" from="*.less" to="${dir.css}/*.css"/>
<targetfile/>
<arg value="-compress" />
</apply>
</target>
This currently builds all of the .LESS files and outputs them toe the appropriate location (Which is livable). If I replace the mapper glob with:
<mapper type="glob" from="MainFileThatImportsOthers.less" to="${dir.css}/MainFileThatImportsOthers.css"/>
The fileset directive is effectively reduced to that one file, and changing the other .LESS files in that directory don't cause output from the task.
Can someone point me in the right direction so I can avoid setting this up wrong and recusing through each .LESS file every time?
I worked out a solution that works correctly, I used an upToDate task to set a property to conditionally trigger Exec for the compiler:
<target name="scanLess" description="Scan for LESS file changes">
<echo message="Checking for LESS file changes..."/>
<uptodate property="tool.less.changed" targetfile="${dir.css}/MyFile.css" >
<srcfiles dir="${dir.less}" includes="*.less" />
</uptodate>
</target>
<target name="less" depends="scanLess" unless="tool.less.changed" description="Compile LESS files" >
<echo message="LESS files changed, running lessc" />
<exec executable="${tool.less}" failonerror="true">
<arg value="${dir.less}/MyFile.less" />
<arg value="${dir.css}/MyFile.css" />
<arg value="-compress" />
</exec>
</target>
Investigate how selectors work in ANT
I am trying to minify the css files in a directory and place the minified items into another directory. I already have:
<target name="css.minify">
<apply executable="java" parallel="false" force="true" dest="FDN/css/min">
<fileset dir="FDN/css" includes="**/*.css"/>
<arg value="-jar"/>
<arg path="lib/yuicompressor-2.4.7.jar"/>
<srcfile/>
<arg value="-o"/>
<mapper type="glob" from="*.css" to="*-min.css"/>
<targetfile/>
</apply>
</target>
This works fine when the directory structure in FDN/css/min is the same as FDN/css. However, if a new directory is added a FileNotFound occurs because it does not exist in the destination.
How can I force the directory to be created if it does not already exist?
You could create the dirs before you execute the apply task.
Here's an example of how you could do it:
<touch mkdirs="true">
<fileset dir="src">
<include name="**/*.css"/>
</fileset>
<regexpmapper from="^(.*)/[^/]*$$" to="dest/\1/.tmp" handledirsep="true"/>
</touch>
<delete>
<fileset dir="dest" includes="**/.tmp"/>
</delete>
It's based on an answer I gave to a different question.