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Diffstat (limited to 'indra/llfilesystem/llfilesystem.cpp')
-rw-r--r-- | indra/llfilesystem/llfilesystem.cpp | 283 |
1 files changed, 0 insertions, 283 deletions
diff --git a/indra/llfilesystem/llfilesystem.cpp b/indra/llfilesystem/llfilesystem.cpp deleted file mode 100644 index 64e0b9f193..0000000000 --- a/indra/llfilesystem/llfilesystem.cpp +++ /dev/null @@ -1,283 +0,0 @@ -/** - * @file filesystem.h - * @brief Simulate local file system operations. - * @Note The initial implementation does actually use standard C++ - * file operations but eventually, there will be another - * layer that caches and manages file meta data too. - * - * $LicenseInfo:firstyear=2002&license=viewerlgpl$ - * Second Life Viewer Source Code - * Copyright (C) 2010, Linden Research, Inc. - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; - * version 2.1 of the License only. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - * - * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA - * $/LicenseInfo$ - */ - -#include "linden_common.h" - -#include "lldir.h" -#include "llfilesystem.h" -#include "llfasttimer.h" -#include "lldiskcache.h" - -const S32 LLFileSystem::READ = 0x00000001; -const S32 LLFileSystem::WRITE = 0x00000002; -const S32 LLFileSystem::READ_WRITE = 0x00000003; // LLFileSystem::READ & LLFileSystem::WRITE -const S32 LLFileSystem::APPEND = 0x00000006; // 0x00000004 & LLFileSystem::WRITE - -static LLTrace::BlockTimerStatHandle FTM_VFILE_WAIT("VFile Wait"); - -LLFileSystem::LLFileSystem(const LLUUID& file_id, const LLAssetType::EType file_type, S32 mode) -{ - mFileType = file_type; - mFileID = file_id; - mPosition = 0; - mBytesRead = 0; - mMode = mode; -} - -LLFileSystem::~LLFileSystem() -{ -} - -// static -bool LLFileSystem::getExists(const LLUUID& file_id, const LLAssetType::EType file_type) -{ - std::string id_str; - file_id.toString(id_str); - const std::string extra_info = ""; - const std::string filename = LLDiskCache::getInstance()->metaDataToFilepath(id_str, file_type, extra_info); - - llifstream file(filename, std::ios::binary); - if (file.is_open()) - { - file.seekg(0, std::ios::end); - return file.tellg() > 0; - } - return false; -} - -// static -bool LLFileSystem::removeFile(const LLUUID& file_id, const LLAssetType::EType file_type) -{ - std::string id_str; - file_id.toString(id_str); - const std::string extra_info = ""; - const std::string filename = LLDiskCache::getInstance()->metaDataToFilepath(id_str, file_type, extra_info); - - LLFile::remove(filename.c_str()); - - return true; -} - -// static -bool LLFileSystem::renameFile(const LLUUID& old_file_id, const LLAssetType::EType old_file_type, - const LLUUID& new_file_id, const LLAssetType::EType new_file_type) -{ - std::string old_id_str; - old_file_id.toString(old_id_str); - const std::string extra_info = ""; - const std::string old_filename = LLDiskCache::getInstance()->metaDataToFilepath(old_id_str, old_file_type, extra_info); - - std::string new_id_str; - new_file_id.toString(new_id_str); - const std::string new_filename = LLDiskCache::getInstance()->metaDataToFilepath(new_id_str, new_file_type, extra_info); - - // Rename needs the new file to not exist. - LLFileSystem::removeFile(new_file_id, new_file_type); - - if (LLFile::rename(old_filename, new_filename) != 0) - { - // We would like to return FALSE here indicating the operation - // failed but the original code does not and doing so seems to - // break a lot of things so we go with the flow... - //return FALSE; - LL_WARNS() << "Failed to rename " << old_file_id << " to " << new_id_str << " reason: " << strerror(errno) << LL_ENDL; - } - - return TRUE; -} - -// static -S32 LLFileSystem::getFileSize(const LLUUID& file_id, const LLAssetType::EType file_type) -{ - std::string id_str; - file_id.toString(id_str); - const std::string extra_info = ""; - const std::string filename = LLDiskCache::getInstance()->metaDataToFilepath(id_str, file_type, extra_info); - - S32 file_size = 0; - llifstream file(filename, std::ios::binary); - if (file.is_open()) - { - file.seekg(0, std::ios::end); - file_size = file.tellg(); - } - - return file_size; -} - -BOOL LLFileSystem::read(U8* buffer, S32 bytes) -{ - BOOL success = TRUE; - - std::string id; - mFileID.toString(id); - const std::string extra_info = ""; - const std::string filename = LLDiskCache::getInstance()->metaDataToFilepath(id, mFileType, extra_info); - - llifstream file(filename, std::ios::binary); - if (file.is_open()) - { - file.seekg(mPosition, std::ios::beg); - - file.read((char*)buffer, bytes); - - if (file) - { - mBytesRead = bytes; - } - else - { - mBytesRead = file.gcount(); - } - - file.close(); - - mPosition += mBytesRead; - if (!mBytesRead) - { - success = FALSE; - } - } - - // update the last access time for the file - this is required - // even though we are reading and not writing because this is the - // way the cache works - it relies on a valid "last accessed time" for - // each file so it knows how to remove the oldest, unused files - LLDiskCache::getInstance()->updateFileAccessTime(filename); - - return success; -} - -S32 LLFileSystem::getLastBytesRead() -{ - return mBytesRead; -} - -BOOL LLFileSystem::eof() -{ - return mPosition >= getSize(); -} - -BOOL LLFileSystem::write(const U8* buffer, S32 bytes) -{ - std::string id_str; - mFileID.toString(id_str); - const std::string extra_info = ""; - const std::string filename = LLDiskCache::getInstance()->metaDataToFilepath(id_str, mFileType, extra_info); - - BOOL success = FALSE; - - if (mMode == APPEND) - { - llofstream ofs(filename, std::ios::app | std::ios::binary); - if (ofs) - { - ofs.write((const char*)buffer, bytes); - - success = TRUE; - } - } - else - { - llofstream ofs(filename, std::ios::binary); - if (ofs) - { - ofs.write((const char*)buffer, bytes); - - mPosition += bytes; - - success = TRUE; - } - } - - return success; -} - -BOOL LLFileSystem::seek(S32 offset, S32 origin) -{ - if (-1 == origin) - { - origin = mPosition; - } - - S32 new_pos = origin + offset; - - S32 size = getSize(); - - if (new_pos > size) - { - LL_WARNS() << "Attempt to seek past end of file" << LL_ENDL; - - mPosition = size; - return FALSE; - } - else if (new_pos < 0) - { - LL_WARNS() << "Attempt to seek past beginning of file" << LL_ENDL; - - mPosition = 0; - return FALSE; - } - - mPosition = new_pos; - return TRUE; -} - -S32 LLFileSystem::tell() const -{ - return mPosition; -} - -S32 LLFileSystem::getSize() -{ - return LLFileSystem::getFileSize(mFileID, mFileType); -} - -S32 LLFileSystem::getMaxSize() -{ - // offer up a huge size since we don't care what the max is - return INT_MAX; -} - -BOOL LLFileSystem::rename(const LLUUID& new_id, const LLAssetType::EType new_type) -{ - LLFileSystem::renameFile(mFileID, mFileType, new_id, new_type); - - mFileID = new_id; - mFileType = new_type; - - return TRUE; -} - -BOOL LLFileSystem::remove() -{ - LLFileSystem::removeFile(mFileID, mFileType); - - return TRUE; -} |