Automate Eclipse “Yui Compressor…”

Question

Eclipse PDT has this handy built-in Yui Compressor in the context menu for files. But when building a webapp that uses multiple such files,

Answer 1

I would like to improve the answer of megre (https://stackoverflow.com/a/53678752/760777). His solution works, but can be improved. All credits to him though.

In step 2: Change the location of the batch file into ${project_loc}\build\minify.bat Place your batch file "minify.bat" in a subfolder "build" in your project folder. Also change the arguments from "$resource_loc $project_loc" to "${project_loc}".

If that does not work for you try "$project_loc". Different versions of Eclipse seem to use different variables.

See screenshot:

I changed the batch file completely:

@ECHO OFF

REM Note: There is a bug in yuicompressor 2.4.8 causing yuicompressor not te be accessible 
REM       see https://stackoverflow.com/a/19339287/760777

SET yui="C:\Program Files (x86)\yuicompressor\yuicompressor-2.4.7.jar"
SET cssFolder=%1\css
SET jsFolder=%1\js

IF EXIST %cssFolder% (
  ECHO Processing folder "%cssFolder%" ... 
  CD %cssFolder%
  MKDIR min 2>NUL
  FOR %%f IN (*.css) DO (
    ECHO Minifying "%%~ff"
    java -jar %yui% %%f -o min\%%f
  )
) ELSE (
  ECHO %cssFolder% does not exist. Put your css files in a subfolder "css" in the current project folder 
)

IF EXIST %jsFolder% (
  ECHO Processing folder "%jsFolder%" ... 
  CD %jsFolder%
  MKDIR min 2>NUL
  FOR %%f IN (*.js) DO (
    ECHO Minifying "%%~ff"
    java -jar %yui% %%f -o min\%%f
  ) 
) ELSE (
  ECHO %jsFolder% does not exist. Put your js files in a sub folder "js" in the current project folder 
)

Probably unnecessary to say, but to use the minified files, you have to modify the references in your HTML / PHP files accordingly.