Resolved issues port #108 merge

build.gradle

@@ -60,9 +60,7 @@ dependencies {
     compile gradleApi()
     compile localGroovy()
 
-    testCompile 'junit:junit:4.+'
-
-    String spockVersion = "org.spockframework:spock-core:0.7-groovy-${gradle.gradleVersion.startsWith('1.')?'1.8':'2.0'}"
+    String spockVersion = "org.spockframework:spock-core:1.0-groovy-2.3"
 
     testCompile (spockVersion) {
         exclude module : 'groovy-all'

src/main/groovy/com/github/jrubygradle/GemUtils.groovy

@@ -1,5 +1,6 @@
 package com.github.jrubygradle
 
+import com.github.jrubygradle.internal.JRubyExecUtils
 import org.gradle.api.Project
 import org.gradle.api.artifacts.Configuration
 import org.gradle.api.file.CopySpec
@@ -51,6 +52,8 @@ class GemUtils {
         Set<File> gemsToProcess = []
         Set<File> deletes = []
 
+        Map jrubyVersion = JRubyExecUtils.jrubyJarVersionTriple(jRubyClasspath)
+
         getGems(gems).files.each { File gem ->
             String gemName = gemFullNameFromFile(gem.name)
             File extractDir = new File(destDir, "gems/${gemName}")
@@ -99,13 +102,13 @@ class GemUtils {
                 // is overwritten
                 args '--ignore-dependencies',
                      "--install-dir=${destDir.absolutePath}",
-		     '--no-user-install',
-		     '--wrappers',
+                     '--no-user-install',
+                     '--wrappers',
                      '-N',
                      '--platform=java'
 
                 // Workaround for bug
-                if(jRubyClasspath.name.contains('1.7.14')) {
+                if(JRubyExecUtils.jrubyJarVersion(jRubyClasspath) == '1.7.14') {
                     project.logger.debug "Gem installation: Working around bug in jruby 1.7.14"
                     environment HOME : project.gradle.gradleUserHomeDir.absolutePath
                 }
@@ -117,10 +120,16 @@ class GemUtils {
 
                 systemProperties 'file.encoding' : 'utf-8'
             }
-            project.javaexec {
-                main 'org.jruby.Main'
-                classpath jRubyClasspath
-                args '-r', 'jruby/commands', '-e', "JRuby::Commands.generate_dir_info( '${destDir.absolutePath}' )"
+
+            if(jrubyVersion.major == 1 && jrubyVersion.minor <= 7 && jrubyVersion.patchlevel < 19) {
+                project.logger.warn "Not generating JRuby directory info information as current JRuby version < 1.7.19"
+            } else {
+                project.javaexec {
+                    main 'org.jruby.Main'
+                    classpath jRubyClasspath
+                    args '-r', 'jruby/commands', '-e', "JRuby::Commands.generate_dir_info( '${destDir.absolutePath}' )"
+
+                }
             }
         }
     }

src/main/groovy/com/github/jrubygradle/internal/JRubyExecUtils.groovy

@@ -42,11 +42,32 @@ class JRubyExecUtils {
      * @since 0.1.9
      */
     @CompileDynamic
-    static String jrubyJarVersion(File jar) {
+    static String jrubyJarVersion(final File jar) {
         Matcher matches = jar.name =~ /jruby-complete-(.+)\.jar/
         !matches ? null : matches[0][1]
     }
 
+    /** Extracts the JRuby version number as a triplet from a jruby-complete-XXX.jar filename
+     *
+     * @param jar JRuby Jar
+     * @return Version string map [major,minor,patchlevel] or null
+     *
+     * @since 0.1.16
+     */
+    @CompileDynamic
+    static Map jrubyJarVersionTriple(final File jar) {
+        String version = jrubyJarVersion(jar)
+        if(!version) {return null}
+
+        Matcher matches = version =~ /(\d{1,2})\.(\d{1,3})\.(\d{1,3})/
+
+        (!matches.matches() || matches[0].size() != 4) ? null : [
+            major : matches[0][1].toInteger(),
+            minor : matches[0][2].toInteger(),
+            patchlevel : matches[0][3].toInteger()
+        ]
+    }
+
     /** Extract the jruby-complete-XXX.jar as a FileCollection
      *
      * @param cfg FileCollection

src/test/groovy/com/github/jrubygradle/internal/JRubyExecUtilsSpec.groovy

@@ -26,4 +26,28 @@ class JRubyExecUtilsSpec extends Specification {
         cmdArgs instanceof List<String>
         cmdArgs.find { it == 'spock' }
     }
+
+    def "The version string in a jruby jar filename must be extracted correctly"() {
+
+        expect:
+            version == JRubyExecUtils.jrubyJarVersion(new File(jarName))
+
+        where:
+            jarName || version
+            'jruby-complete-1.7.14.jar' || '1.7.14'
+            'jruby-complete-22.999.888.jar' || '22.999.888'
+            'jruby-complete.jar' || null
+    }
+
+    def "The version information in a jruby jar filename must be extracted correctly"() {
+
+        expect:
+           triplet == JRubyExecUtils.jrubyJarVersionTriple(new File(jarName))
+
+        where:
+            jarName || triplet
+            'jruby-complete-1.7.14.jar'     || [ major : 1, minor : 7, patchlevel : 14]
+            'jruby-complete-22.999.888.jar' || [ major : 22, minor : 999, patchlevel : 888 ]
+            'jruby-complete.jar'            || null
+    }
 }