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      1 /*
      2  * Copyright (C) 2012 The Android Open Source Project
      3  *
      4  * Licensed under the Eclipse Public License, Version 1.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.eclipse.org/org/documents/epl-v10.php
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 package com.android.ide.eclipse.adt.internal.wizards.templates;
     17 
     18 import static com.android.ide.eclipse.adt.internal.wizards.templates.NewProjectPage.ACTIVITY_NAME_SUFFIX;
     19 
     20 import com.android.ide.eclipse.adt.AdtUtils;
     21 
     22 import freemarker.template.SimpleScalar;
     23 import freemarker.template.TemplateMethodModel;
     24 import freemarker.template.TemplateModel;
     25 import freemarker.template.TemplateModelException;
     26 
     27 import java.util.List;
     28 
     29 /**
     30  * Similar to {@link FmCamelCaseToUnderscoreMethod}, but strips off common class
     31  * suffixes such as "Activity", "Fragment", etc.
     32  */
     33 public class FmClassNameToResourceMethod implements TemplateMethodModel {
     34     @Override
     35     public TemplateModel exec(List args) throws TemplateModelException {
     36         if (args.size() != 1) {
     37             throw new TemplateModelException("Wrong arguments");
     38         }
     39 
     40         String name = args.get(0).toString();
     41 
     42         if (name.isEmpty()) {
     43             return new SimpleScalar("");
     44         }
     45 
     46         name = stripSuffix(name, ACTIVITY_NAME_SUFFIX);
     47         name = stripSuffix(name, "Fragment");              //$NON-NLS-1$
     48         name = stripSuffix(name, "Service");               //$NON-NLS-1$
     49         name = stripSuffix(name, "Provider");              //$NON-NLS-1$
     50 
     51         return new SimpleScalar(AdtUtils.camelCaseToUnderlines(name));
     52     }
     53 
     54     // Strip off the end portion of the activity name. The user might be typing
     55     // the activity name such that only a portion has been entered so far (e.g.
     56     // "MainActivi") and we want to chop off that portion too such that we don't
     57     private static String stripSuffix(String name, String suffix) {
     58         int suffixStart = name.lastIndexOf(suffix.charAt(0));
     59         if (suffixStart != -1 && name.regionMatches(suffixStart, suffix, 0,
     60                 name.length() - suffixStart)) {
     61             name = name.substring(0, suffixStart);
     62         }
     63         assert !name.endsWith(suffix) : name;
     64 
     65         return name;
     66     }
     67 }