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java.io.RandomAccessFile for WinPhone8 / WinRT

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This commit is contained in:
Alexey Pelykh 2013-02-01 16:55:37 +02:00
parent 9d8c825cbc
commit 11eda6af3e
1 changed files with 49 additions and 8 deletions
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57
classpath/java-io.cpp
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@ -739,6 +739,9 @@ Java_java_io_RandomAccessFile_open(JNIEnv* e, jclass, jstring path,
{ {
string_t chars = getChars(e, path); string_t chars = getChars(e, path);
if (chars) { if (chars) {
jlong peer = 0;
jlong length = 0;
#if !defined(WINAPI_FAMILY) || WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
int fd = ::open((const char*)chars, O_RDONLY); int fd = ::open((const char*)chars, O_RDONLY);
releaseChars(e, path, chars); releaseChars(e, path, chars);
if (fd == -1) { if (fd == -1) {
@ -751,11 +754,27 @@ Java_java_io_RandomAccessFile_open(JNIEnv* e, jclass, jstring path,
throwNewErrno(e, "java/io/IOException"); throwNewErrno(e, "java/io/IOException");
return; return;
} }
peer = fd;
length = fileStats.st_size;
#else
HANDLE hFile = CreateFile2
(chars, GENERIC_READ, FILE_SHARE_READ, OPEN_EXISTING, nullptr);
if (hFile == INVALID_HANDLE_VALUE) {
throwNewErrno(e, "java/io/IOException");
return;
}
FILE_STANDARD_INFO info;
if(!GetFileInformationByHandleEx(hFile, FileStandardInfo, &info, sizeof(info))) {
throwNewErrno(e, "java/io/IOException");
return;
}
peer = (jlong)hFile;
length = info.EndOfFile.QuadPart;
#endif
jlong peer = fd;
e->SetLongArrayRegion(result, 0, 1, &peer); e->SetLongArrayRegion(result, 0, 1, &peer);
jlong length = fileStats.st_size;
e->SetLongArrayRegion(result, 1, 1, &length); e->SetLongArrayRegion(result, 1, 1, &length);
} }
} }
@ -765,6 +784,7 @@ Java_java_io_RandomAccessFile_readBytes(JNIEnv* e, jclass, jlong peer,
jlong position, jbyteArray buffer, jlong position, jbyteArray buffer,
int offset, int length) int offset, int length)
{ {
#if !defined(WINAPI_FAMILY) || WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
int fd = (int)peer; int fd = (int)peer;
if(::lseek(fd, position, SEEK_SET) == -1) { if(::lseek(fd, position, SEEK_SET) == -1) {
throwNewErrno(e, "java/io/IOException"); throwNewErrno(e, "java/io/IOException");
@ -773,24 +793,45 @@ Java_java_io_RandomAccessFile_readBytes(JNIEnv* e, jclass, jlong peer,
uint8_t* dst = reinterpret_cast<uint8_t*> uint8_t* dst = reinterpret_cast<uint8_t*>
(e->GetPrimitiveArrayCritical(buffer, 0)); (e->GetPrimitiveArrayCritical(buffer, 0));
#if !defined(WINAPI_FAMILY) || WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
ssize_t bytesRead = ::read(fd, dst + offset, length); ssize_t bytesRead = ::read(fd, dst + offset, length);
#else
auto bytesRead = ::read(fd, dst + offset, length);
#endif
e->ReleasePrimitiveArrayCritical(buffer, dst, 0); e->ReleasePrimitiveArrayCritical(buffer, dst, 0);
if(bytesRead == -1) { if(bytesRead == -1) {
throwNewErrno(e, "java/io/IOException"); throwNewErrno(e, "java/io/IOException");
return -1; return -1;
} }
#else
HANDLE hFile = (HANDLE)peer;
LARGE_INTEGER lPos;
lPos.QuadPart = position;
if(!SetFilePointerEx(hFile, lPos, nullptr, FILE_BEGIN)) {
throwNewErrno(e, "java/io/IOException");
return -1;
}
uint8_t* dst = reinterpret_cast<uint8_t*>
(e->GetPrimitiveArrayCritical(buffer, 0));
DWORD bytesRead = 0;
if(!ReadFile(hFile, dst + offset, length, &bytesRead, nullptr)) {
throwNewErrno(e, "java/io/IOException");
return -1;
}
e->ReleasePrimitiveArrayCritical(buffer, dst, 0);
#endif
return (jint)bytesRead; return (jint)bytesRead;
} }
extern "C" JNIEXPORT void JNICALL extern "C" JNIEXPORT void JNICALL
Java_java_io_RandomAccessFile_close(JNIEnv* /* e*/, jclass, jlong peer) Java_java_io_RandomAccessFile_close(JNIEnv* /* e*/, jclass, jlong peer)
{ {
#if !defined(WINAPI_FAMILY) || WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
int fd = (int)peer; int fd = (int)peer;
::close(fd); ::close(fd);
#else
HANDLE hFile = (HANDLE)peer;
CloseHandle(hFile);
#endif
} }