1 /* |
1 /* |
2 * Copyright (c) 2000, 2005, Oracle and/or its affiliates. All rights reserved. |
2 * Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved. |
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * |
4 * |
5 * This code is free software; you can redistribute it and/or modify it |
5 * This code is free software; you can redistribute it and/or modify it |
6 * under the terms of the GNU General Public License version 2 only, as |
6 * under the terms of the GNU General Public License version 2 only, as |
7 * published by the Free Software Foundation. Oracle designates this |
7 * published by the Free Software Foundation. Oracle designates this |
24 */ |
24 */ |
25 |
25 |
26 package javax.xml.transform.stream; |
26 package javax.xml.transform.stream; |
27 |
27 |
28 import java.io.File; |
28 import java.io.File; |
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29 import java.io.IOException; |
29 import java.io.InputStream; |
30 import java.io.InputStream; |
30 import java.io.Reader; |
31 import java.io.Reader; |
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32 import javax.xml.transform.Result; |
31 |
33 |
32 import javax.xml.transform.Source; |
34 import javax.xml.transform.Source; |
33 |
35 |
34 /** |
36 /** |
35 * <p>Acts as an holder for a transformation Source in the form |
37 * <p>Acts as an holder for a transformation Source in the form |
231 * will attempt to open a connection to the URI only if |
233 * will attempt to open a connection to the URI only if |
232 * there is no byte stream or character stream specified).</p> |
234 * there is no byte stream or character stream specified).</p> |
233 * |
235 * |
234 * @param systemId The system identifier as a URL string. |
236 * @param systemId The system identifier as a URL string. |
235 */ |
237 */ |
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238 @Override |
236 public void setSystemId(String systemId) { |
239 public void setSystemId(String systemId) { |
237 this.systemId = systemId; |
240 this.systemId = systemId; |
238 } |
241 } |
239 |
242 |
240 /** |
243 /** |
241 * Get the system identifier that was set with setSystemId. |
244 * Get the system identifier that was set with setSystemId. |
242 * |
245 * |
243 * @return The system identifier that was set with setSystemId, or null |
246 * @return The system identifier that was set with setSystemId, or null |
244 * if setSystemId was not called. |
247 * if setSystemId was not called. |
245 */ |
248 */ |
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249 @Override |
246 public String getSystemId() { |
250 public String getSystemId() { |
247 return systemId; |
251 return systemId; |
248 } |
252 } |
249 |
253 |
250 /** |
254 /** |
257 //converts the URI to string as per rule specified in |
261 //converts the URI to string as per rule specified in |
258 //RFC 2396, |
262 //RFC 2396, |
259 this.systemId = f.toURI().toASCIIString(); |
263 this.systemId = f.toURI().toASCIIString(); |
260 } |
264 } |
261 |
265 |
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266 /** |
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267 * Indicates whether the {@code StreamSource} object is empty. Empty is |
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268 * defined as follows: |
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269 * <ul> |
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270 * <li>All of the input sources, including the public identifier, system |
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271 * identifier, byte stream, and character stream, are {@code null}. |
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272 * </li> |
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273 * <li>The public identifier and system identifier are {@code null}, and |
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274 * byte and character stream are either {@code null} or contain no byte or |
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275 * character. |
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276 * <p> |
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277 * Note that this method will reset the byte stream if it is provided, or |
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278 * the character stream if the byte stream is not provided. |
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279 * </li> |
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280 * </ul> |
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281 * <p> |
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282 * In case of error while checking the byte or character stream, the method |
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283 * will return false to allow the XML processor to handle the error. |
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284 * |
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285 * @return true if the {@code StreamSource} object is empty, false otherwise |
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286 */ |
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287 @Override |
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288 public boolean isEmpty() { |
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289 return (publicId == null && systemId == null && isStreamEmpty()); |
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290 } |
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291 |
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292 private boolean isStreamEmpty() { |
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293 boolean empty = true; |
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294 try { |
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295 if (inputStream != null) { |
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296 inputStream.reset(); |
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297 int bytesRead = inputStream.available(); |
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298 if (bytesRead > 0) { |
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299 return false; |
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300 } |
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301 } |
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302 |
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303 if (reader != null) { |
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304 reader.reset(); |
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305 int c = reader.read(); |
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306 reader.reset(); |
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307 if (c != -1) { |
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308 return false; |
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309 } |
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310 } |
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311 } catch (IOException ex) { |
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312 //in case of error, return false |
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313 return false; |
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314 } |
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315 |
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316 return empty; |
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317 } |
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318 |
262 ////////////////////////////////////////////////////////////////////// |
319 ////////////////////////////////////////////////////////////////////// |
263 // Internal state. |
320 // Internal state. |
264 ////////////////////////////////////////////////////////////////////// |
321 ////////////////////////////////////////////////////////////////////// |
265 |
322 |
266 /** |
323 /** |