Class |
Line # |
Actions |
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---|---|---|---|---|---|
RegHolder | 15 | 0 | 0 | ||
CodeVal | 27 | 3 | 2 | ||
Replacer | 58 | 108 | 59 |
1 | // | |
2 | // This software is now distributed according to | |
3 | // the Lesser Gnu Public License. Please see | |
4 | // http://www.gnu.org/copyleft/lesser.txt for | |
5 | // the details. | |
6 | // -- Happy Computing! | |
7 | // | |
8 | package com.stevesoft.pat; | |
9 | ||
10 | import jalview.util.MessageManager; | |
11 | ||
12 | import com.stevesoft.pat.wrap.StringWrap; | |
13 | ||
14 | /** Internally used class. */ | |
15 | class RegHolder | |
16 | { | |
17 | Regex me = null; | |
18 | ||
19 | RegHolder prev = null; | |
20 | } | |
21 | ||
22 | /** | |
23 | * Internally used class. | |
24 | * | |
25 | * @see CodeRule | |
26 | */ | |
27 | class CodeVal | |
28 | { | |
29 | int pos; | |
30 | ||
31 | char code; | |
32 | ||
33 | 0 | CodeVal(int p, char c) |
34 | { | |
35 | 0 | pos = p; |
36 | 0 | code = c; |
37 | } | |
38 | ||
39 | 0 | public String toString() |
40 | { | |
41 | 0 | return "(" + pos + "," + code + ")"; |
42 | } | |
43 | } | |
44 | ||
45 | /** | |
46 | * To use this class, first use either the getReplacer() method from Transformer | |
47 | * or Regex. You can then use replaceAll, replaceFirst, etc. methods on the | |
48 | * Replacer in the same way that you can from either of those two classes. | |
49 | * <p> | |
50 | * The only potential difference between using the methods of Replacer to do the | |
51 | * replacing is that Replacer remembers changes to the replacing object between | |
52 | * calls to replaceAll, replaceFirst etc. For details, see the example file | |
53 | * <a href="http://javaregex.com/code/trans3.java.html">trans3.java</a>. | |
54 | * | |
55 | * @see com.stevesoft.pat.Transformer | |
56 | * @see com.stevesoft.pat.Regex | |
57 | */ | |
58 | public class Replacer | |
59 | { | |
60 | boolean first; | |
61 | ||
62 | /** Instantiate a new Replacer. */ | |
63 | 18 | public Replacer() |
64 | { | |
65 | } | |
66 | ||
67 | 0 | public StringLike replaceFirstRegion(String s, Regex r, int start, |
68 | int end) | |
69 | { | |
70 | 0 | return replaceFirstRegion(new StringWrap(s), r, start, end); |
71 | } | |
72 | ||
73 | /** | |
74 | * This method replaces the first occurence of the Regex in the String | |
75 | * starting with position pos according to the Replacer rule of this object. | |
76 | */ | |
77 | 0 | public StringLike replaceFirstRegion(StringLike s, Regex r, int start, |
78 | int end) | |
79 | { | |
80 | 0 | first = true; |
81 | 0 | rh.me = r; |
82 | 0 | rh.prev = null; |
83 | 0 | return dorep(s, start, end); |
84 | } | |
85 | ||
86 | 0 | public StringLike replaceFirst(StringLike s) |
87 | { | |
88 | 0 | return replaceFirstRegion(s, 0, s.length()); |
89 | } | |
90 | ||
91 | 0 | public StringLike replaceFirstFrom(StringLike s, int start) |
92 | { | |
93 | 0 | return replaceFirstRegion(s, start, s.length()); |
94 | } | |
95 | ||
96 | 0 | public StringLike replaceFirstRegion(StringLike s, int start, int end) |
97 | { | |
98 | 0 | first = true; |
99 | 0 | return dorep(s, start, end); |
100 | } | |
101 | ||
102 | RegHolder rh = new RegHolder(); | |
103 | ||
104 | 152 | public StringLike replaceAllRegion(String s, Regex r, int start, int end) |
105 | { | |
106 | 152 | return replaceAllRegion(new StringWrap(s), r, start, end); |
107 | } | |
108 | ||
109 | /** | |
110 | * This method replaces all occurences of the Regex in the String starting | |
111 | * with postition pos according to the Replacer rule of this object. | |
112 | */ | |
113 | 152 | public StringLike replaceAllRegion(StringLike s, Regex r, int start, |
114 | int end) | |
115 | { | |
116 | 152 | first = false; |
117 | // reset | |
118 | 152 | rh.me = r; |
119 | 152 | rh.prev = null; |
120 | 152 | return dorep(s, start, end); |
121 | } | |
122 | ||
123 | 0 | public StringLike replaceAll(StringLike s) |
124 | { | |
125 | 0 | return replaceAllRegion(s, 0, s.length()); |
126 | } | |
127 | ||
128 | 0 | public StringLike replaceAllFrom(StringLike s, int start) |
129 | { | |
130 | 0 | return replaceAllRegion(s, start, s.length()); |
131 | } | |
132 | ||
133 | 0 | public StringLike replaceAllRegion(StringLike s, int start, int end) |
134 | { | |
135 | 0 | first = false; |
136 | 0 | return dorep(s, start, end); |
137 | } | |
138 | ||
139 | 0 | public String replaceAll(String s) |
140 | { | |
141 | 0 | return replaceAllRegion(new StringWrap(s), 0, s.length()).toString(); |
142 | } | |
143 | ||
144 | 0 | public String replaceAllFrom(String s, int start) |
145 | { | |
146 | 0 | return replaceAllRegion(new StringWrap(s), start, s.length()) |
147 | .toString(); | |
148 | } | |
149 | ||
150 | 0 | public String replaceAllRegion(String s, int start, int end) |
151 | { | |
152 | 0 | first = false; |
153 | 0 | return dorep(new StringWrap(s), start, end).toString(); |
154 | } | |
155 | ||
156 | 0 | final public boolean isSpecial(ReplaceRule x) |
157 | { | |
158 | 0 | while (x != null) |
159 | { | |
160 | 0 | if (x instanceof SpecialRule || (x instanceof RuleHolder |
161 | && ((RuleHolder) x).held instanceof SpecialRule)) | |
162 | { | |
163 | 0 | return true; |
164 | } | |
165 | 0 | x = x.next; |
166 | } | |
167 | 0 | return false; |
168 | } | |
169 | ||
170 | 0 | final public void apply1(RegRes rr) |
171 | { | |
172 | 0 | rr.charsMatched_++; |
173 | 0 | apply(rr, null); |
174 | 0 | rr.charsMatched_--; |
175 | } | |
176 | ||
177 | 152 | final StringLike dorep(StringLike s, int start, int end) |
178 | { | |
179 | 152 | StringLike ret = s; |
180 | 152 | want_more_text = false; |
181 | 152 | lastMatchedTo = 0; |
182 | 152 | if (rh.me == null) |
183 | { | |
184 | 0 | throw new NullPointerException(MessageManager |
185 | .getString("exception.replace_null_regex_pointer")); | |
186 | } | |
187 | 152 | if (rh.me._search(s, start, end)) |
188 | { | |
189 | 3 | int rmn = rh.me.matchedTo(); |
190 | 3 | if (rh.me.charsMatched() == 0 && !isSpecial(rh.me.getReplaceRule())) |
191 | { | |
192 | 0 | apply1(rh.me); |
193 | 0 | rmn++; |
194 | } | |
195 | 3 | apply(rh.me); |
196 | 3 | if (!first) |
197 | { | |
198 | 3 | for (int i = rmn; !want_more_text |
199 | && rh.me._search(s, i, end); i = rmn) | |
200 | { | |
201 | 0 | rmn = rh.me.matchedTo(); |
202 | 0 | if (rh.me.charsMatched() == 0) |
203 | { | |
204 | 0 | if (!isSpecial(rh.me.getReplaceRule())) |
205 | { | |
206 | 0 | apply1(rh.me); |
207 | } | |
208 | 0 | rmn++; |
209 | } | |
210 | 0 | apply(rh.me); |
211 | } | |
212 | } | |
213 | 3 | ret = finish(); |
214 | 3 | ret = ret == null ? s : ret; |
215 | } | |
216 | 152 | return ret; |
217 | } | |
218 | ||
219 | StringBufferLike sb = null; | |
220 | ||
221 | StringLike src = null; | |
222 | ||
223 | int pos = 0; | |
224 | ||
225 | /** | |
226 | * This method allows you to apply the results of several matches in a | |
227 | * sequence to modify a String of text. Each call in the sequence must operate | |
228 | * on the same piece of text and the matchedFrom() of each RegRes given to | |
229 | * this method must be greater in value than the preceeding RegRes's | |
230 | * matchedTo() value. | |
231 | */ | |
232 | 3 | public void apply(RegRes r, ReplaceRule rp) |
233 | { | |
234 | 3 | if (rp == null || (rp.next == null && rp instanceof AmpersandRule)) |
235 | { | |
236 | 0 | return; |
237 | } | |
238 | 3 | if (r.didMatch()) |
239 | { | |
240 | 3 | if (src == null) |
241 | { | |
242 | 3 | src = r.getStringLike(); |
243 | } | |
244 | 3 | if (sb == null) |
245 | { | |
246 | 3 | sb = new StringBufferLike(src.newStringBufferLike()); |
247 | } | |
248 | 3 | int rmf = r.matchedFrom(); |
249 | 72 | for (int ii = pos; ii < rmf; ii++) |
250 | { | |
251 | 69 | sb.append(src.charAt(ii)); |
252 | } | |
253 | ||
254 | 6 | for (ReplaceRule x = rp; x != null; x = x.next) |
255 | { | |
256 | 3 | x.apply(sb, r); |
257 | 3 | if (x instanceof SpecialRule) |
258 | { | |
259 | 0 | if (x instanceof WantMoreTextReplaceRule && want_more_text_enable) |
260 | { | |
261 | 0 | want_more_text = true; |
262 | } | |
263 | 0 | else if (x instanceof PushRule) |
264 | { | |
265 | 0 | RegHolder rh2 = new RegHolder(); |
266 | 0 | rh2.me = ((PushRule) x).NewRule; |
267 | 0 | rh2.prev = rh; |
268 | 0 | rh = rh2; |
269 | } | |
270 | 0 | else if (x instanceof PopRule) |
271 | { | |
272 | 0 | if (rh.prev != null) |
273 | { | |
274 | 0 | rh = rh.prev; |
275 | } | |
276 | } | |
277 | 0 | else if (x instanceof ChangeRule) |
278 | { | |
279 | 0 | rh.me = ((ChangeRule) x).NewRule; |
280 | } | |
281 | } | |
282 | } | |
283 | 3 | if (!want_more_text) |
284 | { | |
285 | 3 | pos = r.matchedTo(); |
286 | } | |
287 | } | |
288 | } | |
289 | ||
290 | boolean want_more_text = false, want_more_text_enable = false; | |
291 | ||
292 | 0 | public boolean WantMoreText() |
293 | { | |
294 | 0 | return want_more_text; |
295 | } | |
296 | ||
297 | /** | |
298 | * Another form of apply, it is the same as apply(r,r.getReplaceRule()). | |
299 | */ | |
300 | 3 | public void apply(Regex r) |
301 | { | |
302 | 3 | apply(r, r.getReplaceRule()); |
303 | } | |
304 | ||
305 | /** | |
306 | * This finishes the replacement, appending the right() part of the last | |
307 | * RegRes given to substitute(RegRes). After this method is called, the | |
308 | * Replace object is reset to perform another substitution. If no RegRes | |
309 | * objects with a true didMatch are applied, this returns null. | |
310 | */ | |
311 | 3 | public StringLike finish() |
312 | { | |
313 | 3 | if (src == null) |
314 | { | |
315 | 0 | return null; |
316 | } | |
317 | // sb.append(src.substring(pos,src.length())); | |
318 | 3 | int s_end = src.length(); |
319 | 60 | for (int ii = pos; ii < s_end; ii++) |
320 | { | |
321 | 57 | sb.append(src.charAt(ii)); |
322 | } | |
323 | 3 | src = null; |
324 | 3 | lastMatchedTo = pos; |
325 | 3 | pos = 0; |
326 | 3 | StringLike retstr = sb.toStringLike(); |
327 | 3 | sb = null; |
328 | 3 | return retstr; |
329 | } | |
330 | ||
331 | int lastMatchedTo = 0; | |
332 | ||
333 | 0 | public Object clone() |
334 | { | |
335 | 0 | Replacer r = new Replacer(); |
336 | 0 | r.first = first; |
337 | 0 | r.src = src; |
338 | 0 | r.sb = sb; |
339 | 0 | r.pos = pos; |
340 | 0 | r.lastMatchedTo = lastMatchedTo; |
341 | 0 | r.want_more_text = want_more_text; |
342 | 0 | r.want_more_text_enable = want_more_text_enable; |
343 | 0 | r.rh.me = rh.me; |
344 | 0 | r.rh.prev = rh.prev; |
345 | 0 | return r; |
346 | } | |
347 | ||
348 | 0 | public int lastMatchedTo() |
349 | { | |
350 | 0 | return lastMatchedTo; |
351 | } | |
352 | ||
353 | 0 | public Regex getRegex() |
354 | { | |
355 | 0 | return rh.me; |
356 | } | |
357 | ||
358 | 0 | public void setSource(StringLike sl) |
359 | { | |
360 | 0 | src = sl; |
361 | } | |
362 | ||
363 | 0 | public void setBuffer(StringBufferLike sbl) |
364 | { | |
365 | 0 | sb = sbl; |
366 | } | |
367 | ||
368 | 0 | public void setPos(int pos) |
369 | { | |
370 | 0 | this.pos = pos; |
371 | } | |
372 | } |