Added css minifier charset optional parameter

.travis.yml

@@ -1,4 +1,5 @@
 language: groovy
+dist: trusty
 jdk:
   - oraclejdk8
 install: ./gradlew resolveAllDependencies test

README.md

@@ -46,6 +46,7 @@ minifyCss {
     dest = "${buildDir}/all-min.css"
     yuicompressor { // Optional
         lineBreakPos = -1
+        charset = 'UTF-8'
     }
 }
 
@@ -89,6 +90,7 @@ csslint {
 - source = File to minify
 - dest = File for minified output
 - *(Optional)* yuicompressor.lineBreakPos = -1 (default) Insert a line break after the specified column number
+- *(Optional)* yuicompressor.charset = 'UTF-8' (default) Read the input file using specified charset (e.g. 'UTF-8', 'ISO-8859-1', etc.)
 
 ### gzipCss
 - source = File to compress

build.gradle

@@ -225,6 +225,6 @@ def getPomConfiguration() {
 // download dependencies all at once, keeps downloads out of travis output
 task resolveAllDependencies {
     doLast {
-        configurations.all { it.resolve() }
+        configurations.findAll { it.canBeResolved } .each { it.resolve() }
     }
 }

plugin.gradle

@@ -45,6 +45,7 @@ task minify(type: com.eriwen.gradle.css.tasks.MinifyCssTask) {
     dest = file("${buildDir}/all-min.css")
     yuicompressor {
         lineBreakPos = 100
+        charset = 'UTF-8'
     }
 }
 

src/main/groovy/com/eriwen/gradle/css/CssMinifier.groovy

@@ -8,18 +8,18 @@ import com.yahoo.platform.yui.compressor.CssCompressor
  * @author Eric Wendelin
  */
 class CssMinifier {
-    private static final String CHARSET = 'UTF-8'
+    public static final String UTF8_CHARSET = 'UTF-8'
 
     /**
      * Given input and output files, minify input file and output to given output file
      * @param inputFile File to be minified
      * @param outputFile File for minified output
      */
-    void minifyCssFile(final File inputFile, final File outputFile, final Integer lineBreakPos) {
+    void minifyCssFile(final File inputFile, final File outputFile, final Integer lineBreakPos, final String charset) {
         Reader reader
         CssCompressor compressor
         try {
-            reader = new InputStreamReader(new FileInputStream(inputFile), CHARSET)
+            reader = new InputStreamReader(new FileInputStream(inputFile), charset)
             compressor = new CssCompressor(reader)
         } finally {
             // Close the input stream first, and then open the output stream,
@@ -31,7 +31,7 @@ class CssMinifier {
 
         Writer writer
         try {
-            writer = new OutputStreamWriter(new FileOutputStream(outputFile), CHARSET)
+            writer = new OutputStreamWriter(new FileOutputStream(outputFile), charset)
             compressor.compress(writer, lineBreakPos)
         } finally {
             if (writer != null) {

src/main/groovy/com/eriwen/gradle/css/YuiCompressorExtension.groovy

@@ -20,4 +20,5 @@ import org.gradle.api.tasks.Input
 class YuiCompressorExtension {
     public static final NAME = "yuicompressor"
     @Input Integer lineBreakPos = -1
+    @Input String charset = CssMinifier.UTF8_CHARSET
 }

src/main/groovy/com/eriwen/gradle/css/tasks/CssTask.groovy

@@ -25,6 +25,7 @@ class CssTask extends DefaultTask {
     private static final CssMinifier MINIFIER = new CssMinifier()
 
     Integer lineBreakPos = -1
+    String charset = CssMinifier.CHARSET
 
     @TaskAction
     def run() {
@@ -62,7 +63,7 @@ class CssTask extends DefaultTask {
             }
         }
 
-        MINIFIER.minifyCssFile(new File(tempPath), outputFiles[0] as File, lineBreakPos)
+        MINIFIER.minifyCssFile(new File(tempPath), outputFiles[0] as File, lineBreakPos, charset)
 
         ant.gzip(src: outputPath, destfile: "${outputPath}.gz")
         ant.move(file: "${outputPath}.gz", tofile: outputPath)

src/main/groovy/com/eriwen/gradle/css/tasks/MinifyCssTask.groovy

@@ -31,6 +31,6 @@ class MinifyCssTask extends SourceTask {
 
     @TaskAction
     def run() {
-        MINIFIER.minifyCssFile(source.singleFile, dest as File, project.yuicompressor.lineBreakPos)
+        MINIFIER.minifyCssFile(source.singleFile, dest as File, project.yuicompressor.lineBreakPos, project.yuicompressor.charset)
     }
 }