275 static const char *
276 getBytes(JNIEnv *env, jbyteArray arr)
277 {
278 return arr == NULL ? NULL :
279 (const char*) (*env)->GetByteArrayElements(env, arr, NULL);
280 }
281
282 static void
283 releaseBytes(JNIEnv *env, jbyteArray arr, const char* parr)
284 {
285 if (parr != NULL)
286 (*env)->ReleaseByteArrayElements(env, arr, (jbyte*) parr, JNI_ABORT);
287 }
288
289 static void
290 throwIOException(JNIEnv *env, int errnum, const char *defaultDetail)
291 {
292 static const char * const format = "error=%d, %s";
293 const char *detail = defaultDetail;
294 char *errmsg;
295 jstring s;
296
297 if (errnum != 0) {
298 const char *s = strerror(errnum);
299 if (strcmp(s, "Unknown error") != 0)
300 detail = s;
301 }
302 /* ASCII Decimal representation uses 2.4 times as many bits as binary. */
303 errmsg = NEW(char, strlen(format) + strlen(detail) + 3 * sizeof(errnum));
304 if (errmsg == NULL)
305 return;
306
307 sprintf(errmsg, format, errnum, detail);
308 s = JNU_NewStringPlatform(env, errmsg);
309 if (s != NULL) {
310 jobject x = JNU_NewObjectByName(env, "java/io/IOException",
311 "(Ljava/lang/String;)V", s);
312 if (x != NULL)
313 (*env)->Throw(env, x);
314 }
315 free(errmsg);
316 }
317
318 #ifdef DEBUG_PROCESS
319 /* Debugging process code is difficult; where to write debug output? */
320 static void
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275 static const char *
276 getBytes(JNIEnv *env, jbyteArray arr)
277 {
278 return arr == NULL ? NULL :
279 (const char*) (*env)->GetByteArrayElements(env, arr, NULL);
280 }
281
282 static void
283 releaseBytes(JNIEnv *env, jbyteArray arr, const char* parr)
284 {
285 if (parr != NULL)
286 (*env)->ReleaseByteArrayElements(env, arr, (jbyte*) parr, JNI_ABORT);
287 }
288
289 static void
290 throwIOException(JNIEnv *env, int errnum, const char *defaultDetail)
291 {
292 static const char * const format = "error=%d, %s";
293 const char *detail = defaultDetail;
294 char *errmsg;
295 char tmpbuf[1024];
296 jstring s;
297
298 if (errnum != 0) {
299 int ret = getErrorString(errnum, tmpbuf, sizeof(tmpbuf));
300 if (ret != EINVAL)
301 detail = tmpbuf;
302 }
303 /* ASCII Decimal representation uses 2.4 times as many bits as binary. */
304 errmsg = NEW(char, strlen(format) + strlen(detail) + 3 * sizeof(errnum));
305 if (errmsg == NULL)
306 return;
307
308 sprintf(errmsg, format, errnum, detail);
309 s = JNU_NewStringPlatform(env, errmsg);
310 if (s != NULL) {
311 jobject x = JNU_NewObjectByName(env, "java/io/IOException",
312 "(Ljava/lang/String;)V", s);
313 if (x != NULL)
314 (*env)->Throw(env, x);
315 }
316 free(errmsg);
317 }
318
319 #ifdef DEBUG_PROCESS
320 /* Debugging process code is difficult; where to write debug output? */
321 static void
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