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32
33 package com.jeantessier.diff;
34
35 import java.util.*;
36
37 import org.apache.oro.text.perl.*;
38
39 public class ListDiffPrinter {
40 public static final boolean DEFAULT_COMPRESS = false;
41 public static final String  DEFAULT_ENCODING = "utf-8";
42 public static final String DEFAULT_DTD_PREFIX = "http://depfind.sourceforge.net/dtd";
43
44 private static final Perl5Util perl = new Perl5Util();
45
46 private StringBuffer buffer = new StringBuffer ();
47
48 private String indentText = " ";
49 private int indentLevel = 0;
50 private boolean compress;
51
52 private String name = "";
53 private String oldVersion = "";
54 private String newVersion = "";
55 private Collection removed = new TreeSet();
56 private Collection added = new TreeSet();
57
58 public ListDiffPrinter() {
59 this(DEFAULT_COMPRESS, DEFAULT_ENCODING, DEFAULT_DTD_PREFIX);
60 }
61
62 public ListDiffPrinter(boolean compress) {
63 this(compress, DEFAULT_ENCODING, DEFAULT_DTD_PREFIX);
64 }
65
66 public ListDiffPrinter(String encoding, String dtdPrefix) {
67 this(DEFAULT_COMPRESS, encoding, dtdPrefix);
68 }
69
70 public ListDiffPrinter(boolean compress, String encoding, String dtdPrefix) {
71 this.compress = compress;
72
73 appendHeader(encoding, dtdPrefix);
74 }
75
76 public String getIndentText() {
77 return indentText;
78 }
79
80 public void setIndentText(String indentText) {
81 this.indentText = indentText;
82 }
83
84 private void appendHeader(String encoding, String dtdPrefix) {
85 append("<?xml version=\"1.0\" encoding=\"").append(encoding).append("\" ?>").eol();
86 eol();
87 append("<!DOCTYPE list-diff SYSTEM \"").append(dtdPrefix).append("/list-diff.dtd\">").eol();
88 eol();
89 }
90
91 public String getName() {
92 return name;
93 }
94
95 public void setName(String name) {
96 this.name = name;
97 }
98
99 public String getOldVersion() {
100 return oldVersion;
101 }
102
103 public void setOldVersion(String oldVersion) {
104 this.oldVersion = oldVersion;
105 }
106
107 public String getNewVersion() {
108 return newVersion;
109 }
110
111 public void setNewVersion(String newVersion) {
112 this.newVersion = newVersion;
113 }
114
115 public Collection getRemoved() {
116 return Collections.unmodifiableCollection(removed);
117 }
118
119 public void removeAll(Collection removed) {
120 this.removed.addAll(removed);
121 }
122
123 public void remove(String line) {
124 this.removed.add(line);
125 }
126
127 public Collection getAdded() {
128 return Collections.unmodifiableCollection(added);
129 }
130
131 public void addAll(Collection added) {
132 this.added.addAll(added);
133 }
134
135 public void add(String line) {
136 this.added.add(line);
137 }
138
139 protected ListDiffPrinter append(boolean b) {
140 buffer.append(b);
141 return this;
142 }
143
144 protected ListDiffPrinter append(char c) {
145 buffer.append(c);
146 return this;
147 }
148
149 protected ListDiffPrinter append(char[] str) {
150 buffer.append(str);
151 return this;
152 }
153
154 protected ListDiffPrinter append(char[] str, int offset, int len) {
155 buffer.append(str, offset, len);
156 return this;
157 }
158
159 protected ListDiffPrinter append(double d) {
160 buffer.append(d);
161 return this;
162 }
163
164 protected ListDiffPrinter append(float f) {
165 buffer.append(f);
166 return this;
167 }
168
169 protected ListDiffPrinter append(int i) {
170 buffer.append(i);
171 return this;
172 }
173
174 protected ListDiffPrinter append(long l) {
175 buffer.append(l);
176 return this;
177 }
178
179 protected ListDiffPrinter append(Object obj) {
180 buffer.append(obj);
181 return this;
182 }
183
184 protected ListDiffPrinter append(String str) {
185 buffer.append(str);
186 return this;
187 }
188
189 protected ListDiffPrinter indent() {
190 for (int i=0; i<indentLevel; i++) {
191 append(getIndentText());
192 }
193
194 return this;
195 }
196
197 protected ListDiffPrinter eol() {
198 return append(System.getProperty("line.separator", "\n"));
199 }
200
201 protected void raiseIndent() {
202 indentLevel++;
203 }
204
205 protected void lowerIndent() {
206 indentLevel--;
207 }
208
209 public String toString() {
210 indent().append("<list-diff>").eol();
211 raiseIndent();
212
213 indent().append("<name>").append(getName()).append("</name>").eol();
214 indent().append("<old>").append(getOldVersion()).append("</old>").eol();
215 indent().append("<new>").append(getNewVersion()).append("</new>").eol();
216
217 indent().append("<removed>").eol();
218 raiseIndent();
219 printLines(buffer, compress ? compress(getRemoved()) : getRemoved());
220 lowerIndent();
221 indent().append("</removed>").eol();
222
223 indent().append("<added>").eol();
224 raiseIndent();
225 printLines(buffer, compress ? compress(getAdded()) : getAdded());
226 lowerIndent();
227 indent().append("</added>").eol();
228
229 lowerIndent();
230 indent().append("</list-diff>").eol();
231
232 return buffer.toString();
233 }
234
235 private void printLines(StringBuffer buffer, Collection lines) {
236 Iterator i = lines.iterator();
237 while (i.hasNext()) {
238 String line = (String ) i.next();
239
240 int pos = line.lastIndexOf(" [");
241 if (pos != -1) {
242 indent().append("<line>").append(line.substring(0, pos)).append("</line>").eol();
243 } else {
244 indent().append("<line>").append(line).append("</line>").eol();
245 }
246 }
247 }
248
249 private Collection compress(Collection lines) {
250 Collection result = new TreeSet();
251
252 Iterator i = lines.iterator();
253 while (i.hasNext()) {
254 String line = (String ) i.next();
255
256 boolean add = true;
257 if (line.endsWith(" [C]")) {
258 String packageName = extractPackageName(line);
259
260 add = !lines.contains(packageName + " [P]");
261 } else if (line.endsWith(" [F]")) {
262 String className = extractClassName(line);
263 String packageName = extractPackageName(className);
264
265 add = !lines.contains(packageName + " [P]") && !lines.contains(className + " [C]");
266 }
267
268 if (add) {
269 result.add(line);
270 }
271 }
272
273 return result;
274 }
275
276 private String extractPackageName(String className) {
277 String result = "";
278
279 int pos = className.lastIndexOf('.');
280 if (pos != -1) {
281 result = className.substring(0, pos);
282 }
283
284 return result;
285 }
286
287 private String extractClassName(String featureName) {
288 String result = "";
289
290 synchronized (perl) {
291 if (perl.match("/^(.*)\\.[^\\.]*\\(.*\\)/", featureName)) {
292 result = perl.group(1);
293 } else if (perl.match("/^(.*)\\.[\\^.]*/", featureName)) {
294 result = perl.group(1);
295 }
296 }
297
298 return result;
299 }
300 }
301 |
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