mirror of
https://github.com/wiiu-env/wudd.git
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97 lines
3.1 KiB
C++
97 lines
3.1 KiB
C++
/****************************************************************************
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* Copyright (C) 2021 Maschell
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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****************************************************************************/
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#include <malloc.h>
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#include <coreinit/memory.h>
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#include <utils/logger.h>
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#include "WriteOnlyFileWithCache.h"
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WriteOnlyFileWithCache::WriteOnlyFileWithCache(const char *path, CFile::eOpenTypes mode, int32_t cacheSize) : CFile(path, mode) {
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if (!this->isOpen()) {
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return;
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}
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this->writeBufferSize = cacheSize;
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this->writeBuffer = (void *) memalign(0x1000, this->writeBufferSize);
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if (this->writeBuffer == nullptr) {
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this->close();
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return;
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}
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this->writeBufferPos = 0;
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}
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WriteOnlyFileWithCache::~WriteOnlyFileWithCache() {
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WriteOnlyFileWithCache::close();
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free(writeBuffer);
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}
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bool WriteOnlyFileWithCache::flush() {
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if (this->writeBufferPos > 0) {
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int32_t res = CFile::write(static_cast<const uint8_t *>(this->writeBuffer), this->writeBufferPos);
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if (res < 0) {
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DEBUG_FUNCTION_LINE("Failed to flush cache, write failed: %d", res);
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return false;
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}
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this->writeBufferPos = 0;
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}
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return true;
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}
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int32_t WriteOnlyFileWithCache::write(const uint8_t *addr, size_t writeSize) {
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if (writeSize == this->writeBufferSize) {
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if (!this->flush()) {
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DEBUG_FUNCTION_LINE("Flush failed");
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return -1;
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}
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return CFile::write(reinterpret_cast<const uint8_t *>(addr), writeSize);
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}
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auto toWrite = (int32_t) writeSize;
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if (toWrite == 0) {
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return 0;
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}
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int32_t written = 0;
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do {
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int32_t curWrite = toWrite;
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if (this->writeBufferPos + curWrite > this->writeBufferSize) {
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curWrite = this->writeBufferSize - this->writeBufferPos;
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}
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OSBlockMove((void *) (((uint32_t) this->writeBuffer) + this->writeBufferPos), (void *) (addr + written), curWrite, 1);
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this->writeBufferPos += curWrite;
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if (this->writeBufferPos == this->writeBufferSize) {
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if (!this->flush()) {
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DEBUG_FUNCTION_LINE("Flush failed");
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return -2;
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}
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}
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toWrite -= curWrite;
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written += curWrite;
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} while (toWrite > 0);
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return written;
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}
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int32_t WriteOnlyFileWithCache::seek(int64_t offset, int32_t origin) {
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return -1;
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}
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int32_t WriteOnlyFileWithCache::read(uint8_t *ptr, size_t size) {
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return -1;
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}
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