1 /*
2 * Copyright (c) 2002-2022, City of Paris
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright notice
10 * and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright notice
13 * and the following disclaimer in the documentation and/or other materials
14 * provided with the distribution.
15 *
16 * 3. Neither the name of 'Mairie de Paris' nor 'Lutece' nor the names of its
17 * contributors may be used to endorse or promote products derived from
18 * this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 *
32 * License 1.0
33 */
34 package fr.paris.lutece.portal.service.template;
35
36 import freemarker.core.Environment;
37
38 import freemarker.template.TemplateDateModel;
39 import freemarker.template.TemplateMethodModelEx;
40 import freemarker.template.TemplateModel;
41 import freemarker.template.TemplateModelException;
42 import freemarker.template.TemplateNumberModel;
43 import freemarker.template.TemplateScalarModel;
44
45 import java.text.MessageFormat;
46
47 import java.util.List;
48 import java.util.Locale;
49
50 public abstract class AbstractMessageFormatTemplateMethod implements TemplateMethodModelEx
51 {
52 @Override
53 public Object exec( @SuppressWarnings( "rawtypes" ) List arguments ) throws TemplateModelException
54 {
55 int argsSize = arguments.size( );
56
57 if ( argsSize < 1 )
58 {
59 throw new TemplateModelException( "Must be called with at least one argument (the message key)" );
60 }
61
62 String key = ( (TemplateScalarModel) arguments.get( 0 ) ).getAsString( );
63 Locale locale = Environment.getCurrentEnvironment( ).getLocale( );
64
65 if ( argsSize == 1 )
66 {
67 // no arguments, the message is not a MessageFormat
68 return getPattern( key, locale );
69 }
70
71 Object [ ] args = new Object [ argsSize - 1];
72
73 for ( int i = 1; i < argsSize; i++ )
74 {
75 TemplateModel arg = (TemplateModel) arguments.get( i );
76
77 if ( arg instanceof TemplateScalarModel )
78 {
79 args [i - 1] = ( (TemplateScalarModel) arg ).getAsString( );
80 }
81 else
82 if ( arg instanceof TemplateNumberModel )
83 {
84 args [i - 1] = ( (TemplateNumberModel) arg ).getAsNumber( );
85 }
86 else
87 if ( arg instanceof TemplateDateModel )
88 {
89 args [i - 1] = ( (TemplateDateModel) arg ).getAsDate( );
90 }
91 else
92 {
93 throw new TemplateModelException( "Unsupported argument type : " + arg );
94 }
95 }
96
97 return new MessageFormat( getPattern( key, locale ), locale ).format( args, new StringBuffer( ), null ).toString( );
98 }
99
100 protected abstract String getPattern( String key, Locale locale );
101 }