mirror of
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80 lines
2.1 KiB
C++
80 lines
2.1 KiB
C++
// Copyright (c) 2012- PPSSPP Project.
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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, version 2.0 or later versions.
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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 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official git repository and contact information can be found at
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// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
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#include "Core/FileLoaders/RetryingFileLoader.h"
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// Takes ownership of backend.
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RetryingFileLoader::RetryingFileLoader(FileLoader *backend)
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: filepos_(0), backend_(backend) {
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}
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RetryingFileLoader::~RetryingFileLoader() {
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// Takes ownership.
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delete backend_;
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}
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bool RetryingFileLoader::Exists() {
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if (!backend_->Exists()) {
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// Retry once, immediately.
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return backend_->Exists();
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}
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return true;
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}
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bool RetryingFileLoader::ExistsFast() {
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if (!backend_->ExistsFast()) {
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// Retry once, immediately.
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return backend_->ExistsFast();
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}
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return true;
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}
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bool RetryingFileLoader::IsDirectory() {
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// Can't tell if it's an error either way.
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return backend_->IsDirectory();
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}
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s64 RetryingFileLoader::FileSize() {
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s64 filesize = backend_->FileSize();
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if (filesize == 0) {
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return backend_->FileSize();
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}
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return filesize;
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}
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std::string RetryingFileLoader::Path() const {
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return backend_->Path();
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}
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void RetryingFileLoader::Seek(s64 absolutePos) {
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filepos_ = absolutePos;
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}
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size_t RetryingFileLoader::ReadAt(s64 absolutePos, size_t bytes, void *data, Flags flags) {
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size_t readSize = backend_->ReadAt(absolutePos, bytes, data, flags);
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int retries = 0;
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while (readSize < bytes && retries < MAX_RETRIES) {
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u8 *p = (u8 *)data;
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readSize += backend_->ReadAt(absolutePos + readSize, bytes - readSize, p + readSize, flags);
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++retries;
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}
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filepos_ = absolutePos + readSize;
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return readSize;
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}
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