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56 package org.objectstyle.cayenne.wocompat;
57
58 import java.io.BufferedWriter  ;
59 import java.io.File ;
60 import java.io.FileNotFoundException ;
61 import java.io.FileWriter ;
62 import java.io.IOException ;
63 import java.io.InputStream ;
64 import java.io.Writer ;
65 import java.util.Iterator ;
66 import java.util.List ;
67 import java.util.Map ;
68
69 import org.objectstyle.cayenne.CayenneRuntimeException;
70 import org.objectstyle.cayenne.wocompat.parser.Parser;
71
72
81 public class PropertyListSerialization {
82
87 public static Object propertyListFromFile(File f) throws FileNotFoundException {
88 if (!f.isFile()) {
89 throw new FileNotFoundException ("No such file: " + f);
90 }
91
92 return new Parser(f).propertyList();
93 }
94
95
100 public static Object propertyListFromStream(InputStream in) {
101 return new Parser(in).propertyList();
102 }
103
104
107 public static void propertyListToFile(File f, Object plist) {
108 try {
109 BufferedWriter out = new BufferedWriter (new FileWriter (f));
110 try {
111 writeObject("", out, plist);
112 } finally {
113 out.close();
114 }
115 } catch (IOException ioex) {
116 throw new CayenneRuntimeException("Error saving plist.", ioex);
117 }
118 }
119
120
123 protected static void writeObject(String offset, Writer out, Object plist)
124 throws IOException {
125 if (plist == null) {
126 return;
127 }
128
129 if (plist instanceof List ) {
130 List list = (List ) plist;
131
132 out.write('\n');
133 out.write(offset);
134
135 if (list.size() == 0) {
136 out.write("()");
137 return;
138 }
139
140 out.write("(\n");
141
142 String childOffset = offset + " ";
143 Iterator it = list.iterator();
144 boolean appended = false;
145 while (it.hasNext()) {
146 Object obj = it.next();
148 if (obj != null) {
149 if (appended) {
150 out.write(", \n");
151 }
152
153 out.write(childOffset);
154 writeObject(childOffset, out, obj);
155 appended = true;
156 }
157 }
158
159 out.write('\n');
160 out.write(offset);
161 out.write(')');
162 } else if (plist instanceof Map ) {
163 Map map = (Map ) plist;
164 out.write('\n');
165 out.write(offset);
166
167 if (map.size() == 0) {
168 out.write("{}");
169 return;
170 }
171
172 out.write("{");
173
174 String childOffset = offset + " ";
175
176 Iterator it = map.keySet().iterator();
177 while (it.hasNext()) {
178 Object key = it.next();
180 if (key == null) {
181 continue;
182 }
183 Object obj = map.get(key);
184 if (obj == null) {
185 continue;
186 }
187 out.write('\n');
188 out.write(childOffset);
189 out.write(quoteString(key.toString()));
190 out.write(" = ");
191 writeObject(childOffset, out, obj);
192 out.write(';');
193 }
194
195 out.write('\n');
196 out.write(offset);
197 out.write('}');
198 } else if (plist instanceof String ) {
199 out.write(quoteString(plist.toString()));
200 } else if (plist instanceof Number ) {
201 out.write(plist.toString());
202 } else {
203 throw new CayenneRuntimeException(
204 "Unsupported class for property list serialization: "
205 + plist.getClass().getName());
206 }
207 }
208
209
212 protected static String escapeString(String str) {
213 char[] chars = str.toCharArray();
214 int len = chars.length;
215 StringBuffer buf = new StringBuffer (len + 3);
216
217 for (int i = 0; i < len; i++) {
218 if (chars[i] == '\"' || chars[i] == '\\') {
219 buf.append('\\');
220 }
221 buf.append(chars[i]);
222 }
223
224 return buf.toString();
225 }
226
227
232 protected static String quoteString(String str) {
233 boolean shouldQuote = false;
234
235 String special = " \\\"{}();,-+\'";
238 char[] chars = str.toCharArray();
239 int len = chars.length;
240 for (int i = 0; i < len; i++) {
241 if (special.indexOf(chars[i]) >= 0) {
242 shouldQuote = true;
243 break;
244 }
245 }
246
247 str = escapeString(str);
248 return (shouldQuote) ? '\"' + str + '\"' : str;
249 }
250 }
251 |
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