| /** |
| * @brief zLib exception. |
| * |
| * This file is part of HostLogger project. |
| * |
| * Copyright (c) 2020 YADRO |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "zlib_exception.hpp" |
| |
| #include <cstring> |
| |
| ZlibException::ZlibException(Operation op, int code, gzFile fd, |
| const std::string& fileName) |
| { |
| std::string details; |
| if (code == Z_ERRNO) |
| { |
| // System error |
| const int errCode = errno ? errno : EIO; |
| details = strerror(errCode); |
| } |
| else if (fd != Z_NULL) |
| { |
| // Try to get description from zLib |
| int lastErrCode = 0; |
| const char* lastErrDesc = gzerror(fd, &lastErrCode); |
| if (lastErrCode) |
| { |
| details = '['; |
| details += std::to_string(lastErrCode); |
| details += "] "; |
| details += lastErrDesc; |
| } |
| } |
| if (details.empty()) |
| { |
| details = "Internal zlib error (code "; |
| details += std::to_string(code); |
| details += ')'; |
| } |
| |
| what_ = "Unable to "; |
| switch (op) |
| { |
| case Create: |
| what_ += "create"; |
| break; |
| case Close: |
| what_ += "close"; |
| break; |
| case Write: |
| what_ += "write"; |
| break; |
| } |
| what_ += " file "; |
| what_ += fileName; |
| what_ += ": "; |
| what_ += details; |
| } |
| |
| const char* ZlibException::what() const noexcept |
| { |
| return what_.c_str(); |
| } |