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".
JumpToBasename(const char * file_name)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
LogMessage(LogSeverity severity,const char * file_name,int line_number)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
~LogMessage()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