The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | /* //device/libs/android_runtime/android_util_XmlBlock.cpp |
| 2 | ** |
| 3 | ** Copyright 2006, The Android Open Source Project |
| 4 | ** |
| 5 | ** Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | ** you may not use this file except in compliance with the License. |
| 7 | ** You may obtain a copy of the License at |
| 8 | ** |
| 9 | ** http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | ** |
| 11 | ** Unless required by applicable law or agreed to in writing, software |
| 12 | ** distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | ** See the License for the specific language governing permissions and |
| 15 | ** limitations under the License. |
| 16 | */ |
| 17 | |
| 18 | #define LOG_TAG "XmlBlock" |
| 19 | |
| 20 | #include "jni.h" |
| 21 | #include <utils/misc.h> |
| 22 | #include <android_runtime/AndroidRuntime.h> |
| 23 | #include <utils/AssetManager.h> |
| 24 | #include <utils/Log.h> |
| 25 | |
| 26 | #include <utils/ResourceTypes.h> |
| 27 | |
| 28 | #include <stdio.h> |
| 29 | |
| 30 | namespace android { |
| 31 | |
| 32 | // ---------------------------------------------------------------------------- |
| 33 | |
| 34 | static void doThrow(JNIEnv* env, const char* exc, const char* msg = NULL) |
| 35 | { |
| 36 | jclass npeClazz; |
| 37 | |
| 38 | npeClazz = env->FindClass(exc); |
| 39 | LOG_FATAL_IF(npeClazz == NULL, "Unable to find class %s", exc); |
| 40 | |
| 41 | env->ThrowNew(npeClazz, msg); |
| 42 | } |
| 43 | |
| 44 | static jint android_content_XmlBlock_nativeCreate(JNIEnv* env, jobject clazz, |
| 45 | jbyteArray bArray, |
| 46 | jint off, jint len) |
| 47 | { |
| 48 | if (bArray == NULL) { |
| 49 | doThrow(env, "java/lang/NullPointerException"); |
| 50 | return 0; |
| 51 | } |
| 52 | |
| 53 | jsize bLen = env->GetArrayLength(bArray); |
| 54 | if (off < 0 || off >= bLen || len < 0 || len > bLen || (off+len) > bLen) { |
| 55 | doThrow(env, "java/lang/IndexOutOfBoundsException"); |
| 56 | return 0; |
| 57 | } |
| 58 | |
| 59 | jbyte* b = env->GetByteArrayElements(bArray, NULL); |
| 60 | ResXMLTree* osb = new ResXMLTree(b+off, len, true); |
| 61 | env->ReleaseByteArrayElements(bArray, b, 0); |
| 62 | |
| 63 | if (osb == NULL || osb->getError() != NO_ERROR) { |
| 64 | doThrow(env, "java/lang/IllegalArgumentException"); |
| 65 | return 0; |
| 66 | } |
| 67 | |
| 68 | return (jint)osb; |
| 69 | } |
| 70 | |
| 71 | static jint android_content_XmlBlock_nativeGetStringBlock(JNIEnv* env, jobject clazz, |
| 72 | jint token) |
| 73 | { |
| 74 | ResXMLTree* osb = (ResXMLTree*)token; |
| 75 | if (osb == NULL) { |
| 76 | doThrow(env, "java/lang/NullPointerException"); |
| 77 | return 0; |
| 78 | } |
| 79 | |
| 80 | return (jint)&osb->getStrings(); |
| 81 | } |
| 82 | |
| 83 | static jint android_content_XmlBlock_nativeCreateParseState(JNIEnv* env, jobject clazz, |
| 84 | jint token) |
| 85 | { |
| 86 | ResXMLTree* osb = (ResXMLTree*)token; |
| 87 | if (osb == NULL) { |
| 88 | doThrow(env, "java/lang/NullPointerException"); |
| 89 | return 0; |
| 90 | } |
| 91 | |
| 92 | ResXMLParser* st = new ResXMLParser(*osb); |
| 93 | if (st == NULL) { |
| 94 | doThrow(env, "java/lang/OutOfMemoryError"); |
| 95 | return 0; |
| 96 | } |
| 97 | |
| 98 | st->restart(); |
| 99 | |
| 100 | return (jint)st; |
| 101 | } |
| 102 | |
| 103 | static jint android_content_XmlBlock_nativeNext(JNIEnv* env, jobject clazz, |
| 104 | jint token) |
| 105 | { |
| 106 | ResXMLParser* st = (ResXMLParser*)token; |
| 107 | if (st == NULL) { |
| 108 | return ResXMLParser::END_DOCUMENT; |
| 109 | } |
| 110 | |
| 111 | do { |
| 112 | jint code = (jint)st->next(); |
| 113 | switch (code) { |
| 114 | case ResXMLParser::START_TAG: |
| 115 | return 2; |
| 116 | case ResXMLParser::END_TAG: |
| 117 | return 3; |
| 118 | case ResXMLParser::TEXT: |
| 119 | return 4; |
| 120 | case ResXMLParser::START_DOCUMENT: |
| 121 | return 0; |
| 122 | case ResXMLParser::END_DOCUMENT: |
| 123 | return 1; |
| 124 | case ResXMLParser::BAD_DOCUMENT: |
| 125 | goto bad; |
| 126 | } |
| 127 | } while (true); |
| 128 | |
| 129 | bad: |
| 130 | doThrow(env, "org/xmlpull/v1/XmlPullParserException", |
| 131 | "Corrupt XML binary file"); |
| 132 | return ResXMLParser::BAD_DOCUMENT; |
| 133 | } |
| 134 | |
| 135 | static jint android_content_XmlBlock_nativeGetNamespace(JNIEnv* env, jobject clazz, |
| 136 | jint token) |
| 137 | { |
| 138 | ResXMLParser* st = (ResXMLParser*)token; |
| 139 | if (st == NULL) { |
| 140 | return -1; |
| 141 | } |
| 142 | |
| 143 | return (jint)st->getElementNamespaceID(); |
| 144 | } |
| 145 | |
| 146 | static jint android_content_XmlBlock_nativeGetName(JNIEnv* env, jobject clazz, |
| 147 | jint token) |
| 148 | { |
| 149 | ResXMLParser* st = (ResXMLParser*)token; |
| 150 | if (st == NULL) { |
| 151 | return -1; |
| 152 | } |
| 153 | |
| 154 | return (jint)st->getElementNameID(); |
| 155 | } |
| 156 | |
| 157 | static jint android_content_XmlBlock_nativeGetText(JNIEnv* env, jobject clazz, |
| 158 | jint token) |
| 159 | { |
| 160 | ResXMLParser* st = (ResXMLParser*)token; |
| 161 | if (st == NULL) { |
| 162 | return -1; |
| 163 | } |
| 164 | |
| 165 | return (jint)st->getTextID(); |
| 166 | } |
| 167 | |
| 168 | static jint android_content_XmlBlock_nativeGetLineNumber(JNIEnv* env, jobject clazz, |
| 169 | jint token) |
| 170 | { |
| 171 | ResXMLParser* st = (ResXMLParser*)token; |
| 172 | if (st == NULL) { |
| 173 | doThrow(env, "java/lang/NullPointerException"); |
| 174 | return 0; |
| 175 | } |
| 176 | |
| 177 | return (jint)st->getLineNumber(); |
| 178 | } |
| 179 | |
| 180 | static jint android_content_XmlBlock_nativeGetAttributeCount(JNIEnv* env, jobject clazz, |
| 181 | jint token) |
| 182 | { |
| 183 | ResXMLParser* st = (ResXMLParser*)token; |
| 184 | if (st == NULL) { |
| 185 | doThrow(env, "java/lang/NullPointerException"); |
| 186 | return 0; |
| 187 | } |
| 188 | |
| 189 | return (jint)st->getAttributeCount(); |
| 190 | } |
| 191 | |
| 192 | static jint android_content_XmlBlock_nativeGetAttributeNamespace(JNIEnv* env, jobject clazz, |
| 193 | jint token, jint idx) |
| 194 | { |
| 195 | ResXMLParser* st = (ResXMLParser*)token; |
| 196 | if (st == NULL) { |
| 197 | doThrow(env, "java/lang/NullPointerException"); |
| 198 | return 0; |
| 199 | } |
| 200 | |
| 201 | return (jint)st->getAttributeNamespaceID(idx); |
| 202 | } |
| 203 | |
| 204 | static jint android_content_XmlBlock_nativeGetAttributeName(JNIEnv* env, jobject clazz, |
| 205 | jint token, jint idx) |
| 206 | { |
| 207 | ResXMLParser* st = (ResXMLParser*)token; |
| 208 | if (st == NULL) { |
| 209 | doThrow(env, "java/lang/NullPointerException"); |
| 210 | return 0; |
| 211 | } |
| 212 | |
| 213 | return (jint)st->getAttributeNameID(idx); |
| 214 | } |
| 215 | |
| 216 | static jint android_content_XmlBlock_nativeGetAttributeResource(JNIEnv* env, jobject clazz, |
| 217 | jint token, jint idx) |
| 218 | { |
| 219 | ResXMLParser* st = (ResXMLParser*)token; |
| 220 | if (st == NULL) { |
| 221 | doThrow(env, "java/lang/NullPointerException"); |
| 222 | return 0; |
| 223 | } |
| 224 | |
| 225 | return (jint)st->getAttributeNameResID(idx); |
| 226 | } |
| 227 | |
| 228 | static jint android_content_XmlBlock_nativeGetAttributeDataType(JNIEnv* env, jobject clazz, |
| 229 | jint token, jint idx) |
| 230 | { |
| 231 | ResXMLParser* st = (ResXMLParser*)token; |
| 232 | if (st == NULL) { |
| 233 | doThrow(env, "java/lang/NullPointerException"); |
| 234 | return 0; |
| 235 | } |
| 236 | |
| 237 | return (jint)st->getAttributeDataType(idx); |
| 238 | } |
| 239 | |
| 240 | static jint android_content_XmlBlock_nativeGetAttributeData(JNIEnv* env, jobject clazz, |
| 241 | jint token, jint idx) |
| 242 | { |
| 243 | ResXMLParser* st = (ResXMLParser*)token; |
| 244 | if (st == NULL) { |
| 245 | doThrow(env, "java/lang/NullPointerException"); |
| 246 | return 0; |
| 247 | } |
| 248 | |
| 249 | return (jint)st->getAttributeData(idx); |
| 250 | } |
| 251 | |
| 252 | static jint android_content_XmlBlock_nativeGetAttributeStringValue(JNIEnv* env, jobject clazz, |
| 253 | jint token, jint idx) |
| 254 | { |
| 255 | ResXMLParser* st = (ResXMLParser*)token; |
| 256 | if (st == NULL) { |
| 257 | doThrow(env, "java/lang/NullPointerException"); |
| 258 | return 0; |
| 259 | } |
| 260 | |
| 261 | return (jint)st->getAttributeValueStringID(idx); |
| 262 | } |
| 263 | |
| 264 | static jint android_content_XmlBlock_nativeGetAttributeIndex(JNIEnv* env, jobject clazz, |
| 265 | jint token, |
| 266 | jstring ns, jstring name) |
| 267 | { |
| 268 | ResXMLParser* st = (ResXMLParser*)token; |
| 269 | if (st == NULL || name == NULL) { |
| 270 | doThrow(env, "java/lang/NullPointerException"); |
| 271 | return 0; |
| 272 | } |
| 273 | |
| 274 | const char16_t* ns16 = NULL; |
| 275 | jsize nsLen = 0; |
| 276 | if (ns) { |
| 277 | ns16 = env->GetStringChars(ns, NULL); |
| 278 | nsLen = env->GetStringLength(ns); |
| 279 | } |
| 280 | |
| 281 | const char16_t* name16 = env->GetStringChars(name, NULL); |
| 282 | jsize nameLen = env->GetStringLength(name); |
| 283 | |
| 284 | jint idx = (jint)st->indexOfAttribute(ns16, nsLen, name16, nameLen); |
| 285 | |
| 286 | if (ns) { |
| 287 | env->ReleaseStringChars(ns, ns16); |
| 288 | } |
| 289 | env->ReleaseStringChars(name, name16); |
| 290 | |
| 291 | return idx; |
| 292 | } |
| 293 | |
| 294 | static jint android_content_XmlBlock_nativeGetIdAttribute(JNIEnv* env, jobject clazz, |
| 295 | jint token) |
| 296 | { |
| 297 | ResXMLParser* st = (ResXMLParser*)token; |
| 298 | if (st == NULL) { |
| 299 | doThrow(env, "java/lang/NullPointerException"); |
| 300 | return 0; |
| 301 | } |
| 302 | |
| 303 | ssize_t idx = st->indexOfID(); |
| 304 | return idx >= 0 ? (jint)st->getAttributeValueStringID(idx) : -1; |
| 305 | } |
| 306 | |
| 307 | static jint android_content_XmlBlock_nativeGetClassAttribute(JNIEnv* env, jobject clazz, |
| 308 | jint token) |
| 309 | { |
| 310 | ResXMLParser* st = (ResXMLParser*)token; |
| 311 | if (st == NULL) { |
| 312 | doThrow(env, "java/lang/NullPointerException"); |
| 313 | return 0; |
| 314 | } |
| 315 | |
| 316 | ssize_t idx = st->indexOfClass(); |
| 317 | return idx >= 0 ? (jint)st->getAttributeValueStringID(idx) : -1; |
| 318 | } |
| 319 | |
| 320 | static jint android_content_XmlBlock_nativeGetStyleAttribute(JNIEnv* env, jobject clazz, |
| 321 | jint token) |
| 322 | { |
| 323 | ResXMLParser* st = (ResXMLParser*)token; |
| 324 | if (st == NULL) { |
| 325 | doThrow(env, "java/lang/NullPointerException"); |
| 326 | return 0; |
| 327 | } |
| 328 | |
| 329 | ssize_t idx = st->indexOfStyle(); |
| 330 | if (idx < 0) { |
| 331 | return 0; |
| 332 | } |
| 333 | |
| 334 | Res_value value; |
| 335 | if (st->getAttributeValue(idx, &value) < 0) { |
| 336 | return 0; |
| 337 | } |
| 338 | |
| 339 | return value.dataType == value.TYPE_REFERENCE |
| 340 | || value.dataType == value.TYPE_ATTRIBUTE |
| 341 | ? value.data : 0; |
| 342 | } |
| 343 | |
| 344 | static void android_content_XmlBlock_nativeDestroyParseState(JNIEnv* env, jobject clazz, |
| 345 | jint token) |
| 346 | { |
| 347 | ResXMLParser* st = (ResXMLParser*)token; |
| 348 | if (st == NULL) { |
| 349 | doThrow(env, "java/lang/NullPointerException"); |
| 350 | return; |
| 351 | } |
| 352 | |
| 353 | delete st; |
| 354 | } |
| 355 | |
| 356 | static void android_content_XmlBlock_nativeDestroy(JNIEnv* env, jobject clazz, |
| 357 | jint token) |
| 358 | { |
| 359 | ResXMLTree* osb = (ResXMLTree*)token; |
| 360 | if (osb == NULL) { |
| 361 | doThrow(env, "java/lang/NullPointerException"); |
| 362 | return; |
| 363 | } |
| 364 | |
| 365 | delete osb; |
| 366 | } |
| 367 | |
| 368 | // ---------------------------------------------------------------------------- |
| 369 | |
| 370 | /* |
| 371 | * JNI registration. |
| 372 | */ |
| 373 | static JNINativeMethod gXmlBlockMethods[] = { |
| 374 | /* name, signature, funcPtr */ |
| 375 | { "nativeCreate", "([BII)I", |
| 376 | (void*) android_content_XmlBlock_nativeCreate }, |
| 377 | { "nativeGetStringBlock", "(I)I", |
| 378 | (void*) android_content_XmlBlock_nativeGetStringBlock }, |
| 379 | { "nativeCreateParseState", "(I)I", |
| 380 | (void*) android_content_XmlBlock_nativeCreateParseState }, |
| 381 | { "nativeNext", "(I)I", |
| 382 | (void*) android_content_XmlBlock_nativeNext }, |
| 383 | { "nativeGetNamespace", "(I)I", |
| 384 | (void*) android_content_XmlBlock_nativeGetNamespace }, |
| 385 | { "nativeGetName", "(I)I", |
| 386 | (void*) android_content_XmlBlock_nativeGetName }, |
| 387 | { "nativeGetText", "(I)I", |
| 388 | (void*) android_content_XmlBlock_nativeGetText }, |
| 389 | { "nativeGetLineNumber", "(I)I", |
| 390 | (void*) android_content_XmlBlock_nativeGetLineNumber }, |
| 391 | { "nativeGetAttributeCount", "(I)I", |
| 392 | (void*) android_content_XmlBlock_nativeGetAttributeCount }, |
| 393 | { "nativeGetAttributeNamespace","(II)I", |
| 394 | (void*) android_content_XmlBlock_nativeGetAttributeNamespace }, |
| 395 | { "nativeGetAttributeName", "(II)I", |
| 396 | (void*) android_content_XmlBlock_nativeGetAttributeName }, |
| 397 | { "nativeGetAttributeResource", "(II)I", |
| 398 | (void*) android_content_XmlBlock_nativeGetAttributeResource }, |
| 399 | { "nativeGetAttributeDataType", "(II)I", |
| 400 | (void*) android_content_XmlBlock_nativeGetAttributeDataType }, |
| 401 | { "nativeGetAttributeData", "(II)I", |
| 402 | (void*) android_content_XmlBlock_nativeGetAttributeData }, |
| 403 | { "nativeGetAttributeStringValue", "(II)I", |
| 404 | (void*) android_content_XmlBlock_nativeGetAttributeStringValue }, |
| 405 | { "nativeGetAttributeIndex", "(ILjava/lang/String;Ljava/lang/String;)I", |
| 406 | (void*) android_content_XmlBlock_nativeGetAttributeIndex }, |
| 407 | { "nativeGetIdAttribute", "(I)I", |
| 408 | (void*) android_content_XmlBlock_nativeGetIdAttribute }, |
| 409 | { "nativeGetClassAttribute", "(I)I", |
| 410 | (void*) android_content_XmlBlock_nativeGetClassAttribute }, |
| 411 | { "nativeGetStyleAttribute", "(I)I", |
| 412 | (void*) android_content_XmlBlock_nativeGetStyleAttribute }, |
| 413 | { "nativeDestroyParseState", "(I)V", |
| 414 | (void*) android_content_XmlBlock_nativeDestroyParseState }, |
| 415 | { "nativeDestroy", "(I)V", |
| 416 | (void*) android_content_XmlBlock_nativeDestroy }, |
| 417 | }; |
| 418 | |
| 419 | int register_android_content_XmlBlock(JNIEnv* env) |
| 420 | { |
| 421 | return AndroidRuntime::registerNativeMethods(env, |
| 422 | "android/content/res/XmlBlock", gXmlBlockMethods, NELEM(gXmlBlockMethods)); |
| 423 | } |
| 424 | |
| 425 | }; // namespace android |
| 426 | |