1 /* 2 * Copyright (C) 2018 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "utils/base/logging.h" 18 19 #include <stdlib.h> 20 #include <exception> 21 #include <iostream> 22 23 #include "utils/base/logging_raw.h" 24 25 namespace libtextclassifier3 { 26 namespace logging { 27 28 namespace { 29 // Returns pointer to beginning of last /-separated token from file_name. 30 // file_name should be a pointer to a zero-terminated array of chars. 31 // E.g., "foo/bar.cc" -> "bar.cc", "foo/" -> "", "foo" -> "foo". 32 const char *JumpToBasename(const char *file_name) { 33 if (file_name == nullptr) { 34 return nullptr; 35 } 36 37 // Points to the beginning of the last encountered token. 38 const char *last_token_start = file_name; 39 while (*file_name != '\0') { 40 if (*file_name == '/') { 41 // Found token separator. A new (potentially empty) token starts after 42 // this position. Notice that if file_name is a valid zero-terminated 43 // string, file_name + 1 is a valid pointer (there is at least one char 44 // after address file_name, the zero terminator). 45 last_token_start = file_name + 1; 46 } 47 file_name++; 48 } 49 return last_token_start; 50 } 51 } // namespace 52 53 LogMessage::LogMessage(LogSeverity severity, const char *file_name, 54 int line_number) 55 : severity_(severity) { 56 stream_ << JumpToBasename(file_name) << ":" << line_number << ": "; 57 } 58 59 LogMessage::~LogMessage() { 60 LowLevelLogging(severity_, /* tag = */ "txtClsf", stream_.message); 61 if (severity_ == FATAL) { 62 std::terminate(); // Will print a stacktrace (stdout or logcat). 63 } 64 } 65 66 } // namespace logging 67 } // namespace libtextclassifier3 68
