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1
52
53 package freemarker.core;
54
55 import freemarker.template.*;
56 import freemarker.template.utility.StringUtil;
57
58 import java.io.StringReader  ;
59 import java.util.StringTokenizer ;
60
61
62
65
66 abstract class StringBuiltins {
67 abstract static class StringBuiltIn extends BuiltIn {
68 TemplateModel _getAsTemplateModel(Environment env)
69 throws TemplateException
70 {
71 return calculateResult(target.getStringValue(env), env);
72 }
73 abstract TemplateModel calculateResult(String s, Environment env) throws TemplateException;
74 }
75
76 static class capitalizeBI extends StringBuiltIn {
77 TemplateModel calculateResult(String s, Environment env) {
78 return new SimpleScalar(StringUtil.capitalize(s));
79 }
80 }
81
82 static class chop_linebreakBI extends StringBuiltIn {
83 TemplateModel calculateResult(String s, Environment env) {
84 return new SimpleScalar(StringUtil.chomp(s));
85 }
86 }
87
88 static class j_stringBI extends StringBuiltIn {
89 TemplateModel calculateResult(String s, Environment env) {
90 return new SimpleScalar(StringUtil.javaStringEnc(s));
91 }
92 }
93
94 static class js_stringBI extends StringBuiltIn {
95 TemplateModel calculateResult(String s, Environment env) {
96 return new SimpleScalar(StringUtil.javaScriptStringEnc(s));
97 }
98 }
99
100 static class cap_firstBI extends StringBuiltIn {
101 TemplateModel calculateResult(String s, Environment env) {
102 int i = 0;
103 int ln = s.length();
104 while (i < ln && Character.isWhitespace(s.charAt(i))) {
105 i++;
106 }
107 if (i < ln) {
108 StringBuffer b = new StringBuffer (s);
109 b.setCharAt(i, Character.toUpperCase(s.charAt(i)));
110 s = b.toString();
111 }
112 return new SimpleScalar(s);
113 }
114 }
115
116 static class uncap_firstBI extends StringBuiltIn {
117 TemplateModel calculateResult(String s, Environment env) {
118 int i = 0;
119 int ln = s.length();
120 while (i < ln && Character.isWhitespace(s.charAt(i))) {
121 i++;
122 }
123 if (i < ln) {
124 StringBuffer b = new StringBuffer (s);
125 b.setCharAt(i, Character.toLowerCase(s.charAt(i)));
126 s = b.toString();
127 }
128 return new SimpleScalar(s);
129 }
130 }
131
132 static class upper_caseBI extends StringBuiltIn {
133 TemplateModel calculateResult(String s, Environment env)
134 {
135 return new SimpleScalar(s.toUpperCase(env.getLocale()));
136 }
137 }
138
139 static class lower_caseBI extends StringBuiltIn {
140 TemplateModel calculateResult(String s, Environment env)
141 {
142 return new SimpleScalar(s.toLowerCase(env.getLocale()));
143 }
144 }
145
146 static class word_listBI extends StringBuiltIn {
147 TemplateModel calculateResult(String s, Environment env) {
148 SimpleSequence result = new SimpleSequence();
149 StringTokenizer st = new StringTokenizer (s);
150 while (st.hasMoreTokens()) {
151 result.add(st.nextToken());
152 }
153 return result;
154 }
155 }
156
157 static class evalBI extends StringBuiltIn {
158 TemplateModel calculateResult(String s, Environment env) throws TemplateException
159 {
160 SimpleCharStream scs = new SimpleCharStream(
161 new StringReader ("(" + s + ")"), target.beginLine,
162 target.beginColumn, s.length() + 2);
163 FMParserTokenManager token_source = new FMParserTokenManager(scs);
164 token_source.SwitchTo(FMParserConstants.FM_EXPRESSION);
165 FMParser parser = new FMParser(token_source);
166 parser.template = getTemplate();
167 Expression exp = null;
168 try {
169 exp = parser.Expression();
170 } catch (ParseException pe) {
171 throw new TemplateException(pe, env);
172 }
173 return exp.getAsTemplateModel(env);
174 }
175 }
176
177 static class numberBI extends StringBuiltIn {
178 TemplateModel calculateResult(String s, Environment env) throws TemplateException
179 {
180 try {
181 return new SimpleNumber(env.getArithmeticEngine().toNumber(s));
182 }
183 catch(NumberFormatException nfe) {
184 String mess = "Error: " + getStartLocation()
185 + "\nExpecting a number here, found: " + s;
186 throw new NonNumericalException(mess, env);
187 }
188 }
189 }
190
191 } |
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