#459 : Adapted regex to the 'official' regexps used by docker.

tbh, https://github.com/docker/docker/blob/master/vendor/src/github.com/docker/distribution/reference/regexp.go goes a bit over the top with abstrcaction. would be so cool if they used plain regexps, not that supposed to be super-intelligent abstraction.

src/main/java/io/fabric8/maven/docker/util/ImageName.java

@@ -204,10 +204,12 @@ public static void validate(String image) {
     // Validations patterns, taken directly from the docker source
     // https://github.com/docker/docker/blob/master/vendor/src/github.com/docker/distribution/reference/regexp.go
     // https://github.com/docker/docker/blob/master/vendor/src/github.com/docker/distribution/reference/reference.go
-    private final Pattern NAME_COMP_REGEXP = Pattern.compile("[a-z0-9]+(?:(?:[._]|__|[-]*)[a-z0-9]+)*");
-    private final Pattern COMP_PATH_REGEXP = Pattern.compile("([/]?[a-z0-9]+(?:(?:[._]|__|[-]*)[a-z0-9]+)*)*");
-    private final String hPartPattern = "(?:[a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9-]*[a-zA-Z0-9])";
-    private final Pattern REGISTRY_REGEXP = Pattern.compile("^" + hPartPattern + "(?:\\." + hPartPattern + ")*(?::[0-9]+)?$");
+    private final String nameComponentRegexp = "[a-z0-9]+(?:(?:[._]|__|[-]*)[a-z0-9]+)*";
+    private final String hostnameComponentRegexp = "(?:[a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9-]*[a-zA-Z0-9])";
+    private final String hostnameRegexp = hostnameComponentRegexp + "(?:(?:\\." + hostnameComponentRegexp + ")+)?(?::[0-9]+)?";
+    private final Pattern NAME_COMP_REGEXP = Pattern.compile(nameComponentRegexp);
+    private final Pattern IMAGE_NAME_REGEXP = Pattern.compile("(?:" + hostnameRegexp + "/)?" + nameComponentRegexp + "(?:/" + nameComponentRegexp + ")?");
+    private final Pattern REGISTRY_REGEXP = Pattern.compile("^" + hostnameComponentRegexp + "(?:\\." + hostnameComponentRegexp + ")*(?::[0-9]+)?$");
     private final Pattern TAG_REGEXP = Pattern.compile("^[\\w][\\w.-]{0,127}$");
 
     // Validate parts and throw an IllegalArgumentException if a part is not valid
@@ -216,8 +218,8 @@ private void doValidate() {
         // Stripp of user from repository name
         String image = user != null ? repository.substring(user.length() + 1) : repository;
         Object[] checks = new Object[] {
-            "registry",REGISTRY_REGEXP, registry,
-            "image", COMP_PATH_REGEXP, image,
+            "registry", REGISTRY_REGEXP, registry,
+            "image", IMAGE_NAME_REGEXP, image,
             "user", NAME_COMP_REGEXP, user,
             "tag", TAG_REGEXP, tag
         };

src/test/java/io/fabric8/maven/docker/util/ImageNameTest.java

@@ -44,15 +44,7 @@ public void simple() {
                         .fullName("consol/tomcat-8.0").fullNameWithTag("consol/tomcat-8.0:8.0.9")
         };
 
-        for (int i = 0; i < data.length; i += 2) {
-            ImageName name = new ImageName((String) data[i]);
-            Res res = (Res) data[i+1];
-            assertEquals("Registry " + i,res.registry,name.getRegistry());
-            assertEquals("Repository " + i,res.repository,name.getRepository());
-            assertEquals("Tag " + i,res.tag,name.getTag());
-            assertEquals("RepoWithRegistry " + i,res.fullName, name.getNameWithoutTag(null));
-            assertEquals("FullName " + i,res.fullNameWithTag,name.getFullName(null));
-        }
+        verifyData(data);
     }
 
     @Test
@@ -87,9 +79,13 @@ public void testMultipleSubComponents() {
                         .fullName("org/jolokia_demo").fullNameWithTag("org/jolokia_demo:0.9.6"),
         };
 
+        verifyData(data);
+    }
+
+    private void verifyData(Object[] data) {
         for (int i = 0; i < data.length; i += 2) {
             ImageName name = new ImageName((String) data[i]);
-            Res res = (Res) data[i+1];
+            Res res = (Res) data[i + 1];
             assertEquals("Registry " + i,res.registry,name.getRegistry());
             assertEquals("Repository " + i,res.repository,name.getRepository());
             assertEquals("Tag " + i,res.tag,name.getTag());