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1
52
53 package freemarker.core;
54
55 import java.io.*;
56 import java.util.*;
57 import freemarker.template.*;
58
59
60
72 class Interpret extends BuiltIn
73 {
74
89 TemplateModel _getAsTemplateModel(Environment env)
90 throws TemplateException
91 {
92 TemplateModel model = target.getAsTemplateModel(env);
93 Expression sourceExpr = null;
94 String  id = "anonymous_interpreted";
95 if(model instanceof TemplateSequenceModel)
96 {
97 sourceExpr = ((Expression)new DynamicKeyName(target, new NumberLiteral(new Integer (0))).copyLocationFrom(target));
98 if(((TemplateSequenceModel)model).size() > 1)
99 {
100 id = ((Expression)new DynamicKeyName(target, new NumberLiteral(new Integer (1))).copyLocationFrom(target)).getStringValue(env);
101 }
102 }
103 else if (model instanceof TemplateScalarModel)
104 {
105 sourceExpr = target;
106 }
107 else
108 {
109 throw invalidTypeException(model, target, env, "sequence or string");
110 }
111 String templateSource = sourceExpr.getStringValue(env);
112 Template parentTemplate = env.getTemplate();
113 try
114 {
115 Template template = new Template(parentTemplate.getName() + "$" + id, new StringReader(templateSource), parentTemplate.getConfiguration());
116 template.setLocale(env.getLocale());
117 return new TemplateProcessorModel(template);
118 }
119 catch(IOException e)
120 {
121 throw new TemplateException("", e, env);
122 }
123 }
124
125 private static class TemplateProcessorModel
126 implements
127 TemplateTransformModel
128 {
129 private final Template template;
130
131 TemplateProcessorModel(Template template)
132 {
133 this.template = template;
134 }
135
136 public Writer getWriter(final Writer out, Map args) throws TemplateModelException, IOException
137 {
138 try
139 {
140 Environment env = Environment.getCurrentEnvironment();
141 env.include(template);
142 }
143 catch(TemplateModelException e)
144 {
145 throw e;
146 }
147 catch(IOException e)
148 {
149 throw e;
150 }
151 catch(RuntimeException e)
152 {
153 throw e;
154 }
155 catch(Exception e)
156 {
157 throw new TemplateModelException(e);
158 }
159
160 return new Writer(out)
161 {
162 public void close()
163 {
164 }
165
166 public void flush() throws IOException
167 {
168 out.flush();
169 }
170
171 public void write(char[] cbuf, int off, int len) throws IOException
172 {
173 out.write(cbuf, off, len);
174 }
175 };
176 }
177 }
178 }
179 |
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