231 {
232 return arr == NULL ? NULL :
233 (const char*) (*env)->GetByteArrayElements(env, arr, NULL);
234 }
235
236 static void
237 releaseBytes(JNIEnv *env, jbyteArray arr, const char* parr)
238 {
239 if (parr != NULL)
240 (*env)->ReleaseByteArrayElements(env, arr, (jbyte*) parr, JNI_ABORT);
241 }
242
243 #define IOE_FORMAT "error=%d, %s"
244
245 static void
246 throwIOException(JNIEnv *env, int errnum, const char *defaultDetail)
247 {
248 const char *detail = defaultDetail;
249 char *errmsg;
250 size_t fmtsize;
251 jstring s;
252
253 if (errnum != 0) {
254 const char *s = strerror(errnum);
255 if (strcmp(s, "Unknown error") != 0)
256 detail = s;
257 }
258 /* ASCII Decimal representation uses 2.4 times as many bits as binary. */
259 fmtsize = sizeof(IOE_FORMAT) + strlen(detail) + 3 * sizeof(errnum);
260 errmsg = NEW(char, fmtsize);
261 if (errmsg == NULL)
262 return;
263
264 snprintf(errmsg, fmtsize, IOE_FORMAT, errnum, detail);
265 s = JNU_NewStringPlatform(env, errmsg);
266 if (s != NULL) {
267 jobject x = JNU_NewObjectByName(env, "java/io/IOException",
268 "(Ljava/lang/String;)V", s);
269 if (x != NULL)
270 (*env)->Throw(env, x);
271 }
272 free(errmsg);
273 }
274
275 #ifdef DEBUG_PROCESS
276 /* Debugging process code is difficult; where to write debug output? */
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231 {
232 return arr == NULL ? NULL :
233 (const char*) (*env)->GetByteArrayElements(env, arr, NULL);
234 }
235
236 static void
237 releaseBytes(JNIEnv *env, jbyteArray arr, const char* parr)
238 {
239 if (parr != NULL)
240 (*env)->ReleaseByteArrayElements(env, arr, (jbyte*) parr, JNI_ABORT);
241 }
242
243 #define IOE_FORMAT "error=%d, %s"
244
245 static void
246 throwIOException(JNIEnv *env, int errnum, const char *defaultDetail)
247 {
248 const char *detail = defaultDetail;
249 char *errmsg;
250 size_t fmtsize;
251 char tmpbuf[1024];
252 jstring s;
253
254 if (errnum != 0) {
255 int ret = getErrorString(errnum, tmpbuf, sizeof(tmpbuf));
256 if (ret != EINVAL)
257 detail = tmpbuf;
258 }
259 /* ASCII Decimal representation uses 2.4 times as many bits as binary. */
260 fmtsize = sizeof(IOE_FORMAT) + strlen(detail) + 3 * sizeof(errnum);
261 errmsg = NEW(char, fmtsize);
262 if (errmsg == NULL)
263 return;
264
265 snprintf(errmsg, fmtsize, IOE_FORMAT, errnum, detail);
266 s = JNU_NewStringPlatform(env, errmsg);
267 if (s != NULL) {
268 jobject x = JNU_NewObjectByName(env, "java/io/IOException",
269 "(Ljava/lang/String;)V", s);
270 if (x != NULL)
271 (*env)->Throw(env, x);
272 }
273 free(errmsg);
274 }
275
276 #ifdef DEBUG_PROCESS
277 /* Debugging process code is difficult; where to write debug output? */
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