| // Copyright 2020 The Pigweed Authors |
| // |
| // 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 |
| // |
| // https://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. |
| |
| // This is a very basic direct output log implementation with no buffering. |
| |
| #include "pw_log_basic/log_basic.h" |
| |
| #include <cstring> |
| |
| #include "pw_log/levels.h" |
| #include "pw_string/string_builder.h" |
| #include "pw_sys_io/sys_io.h" |
| |
| // ANSI color constants to control the terminal. Not Windows compatible. |
| // clang-format off |
| #define MAGENTA "\033[35m" |
| #define YELLOW "\033[33m" |
| #define RED "\033[31m" |
| #define GREEN "\033[32m" |
| #define BLUE "\033[96m" |
| #define BLACK "\033[30m" |
| #define YELLOW_BG "\033[43m" |
| #define WHITE_BG "\033[47m" |
| #define RED_BG "\033[41m" |
| #define BOLD "\033[1m" |
| #define RESET "\033[0m" |
| // clang-format on |
| |
| #ifndef PW_EMOJI |
| #define PW_EMOJI 0 |
| #endif // PW_EMOJI |
| |
| // TODO(pwbug/17): Expose these through the config system. |
| #define PW_LOG_SHOW_FILENAME 0 |
| #define PW_LOG_SHOW_FUNCTION 0 |
| #define PW_LOG_SHOW_FLAG 0 |
| #define PW_LOG_SHOW_MODULE 0 |
| |
| namespace { |
| |
| const char* LogLevelToLogLevelName(int level) { |
| switch (level) { |
| // clang-format off |
| #if PW_EMOJI |
| case PW_LOG_LEVEL_DEBUG : return "đž" RESET; |
| case PW_LOG_LEVEL_INFO : return "âšī¸ " RESET; |
| case PW_LOG_LEVEL_WARN : return "â ī¸ " RESET; |
| case PW_LOG_LEVEL_ERROR : return "â" RESET; |
| case PW_LOG_LEVEL_CRITICAL : return "â ī¸ " RESET; |
| default: return "â" RESET; |
| #else |
| case PW_LOG_LEVEL_DEBUG : return BLUE BOLD "DBG" RESET; |
| case PW_LOG_LEVEL_INFO : return MAGENTA BOLD "INF" RESET; |
| case PW_LOG_LEVEL_WARN : return YELLOW BOLD "WRN" RESET; |
| case PW_LOG_LEVEL_ERROR : return RED BOLD "ERR" RESET; |
| case PW_LOG_LEVEL_CRITICAL : return BLACK BOLD RED_BG "FTL" RESET; |
| default : return GREEN BOLD "UNK" RESET; |
| #endif |
| // clang-format on |
| } |
| } |
| |
| #if PW_LOG_SHOW_FILENAME |
| const char* GetFileBasename(const char* filename) { |
| int length = std::strlen(filename); |
| if (length == 0) { |
| return filename; |
| } |
| |
| // Start on the last character. |
| // TODO(pwbug/38): This part of the function doesn't work for Windows paths. |
| const char* basename = filename + std::strlen(filename) - 1; |
| while (basename != filename && *basename != '/') { |
| basename--; |
| } |
| if (*basename == '/') { |
| basename++; |
| } |
| return basename; |
| } |
| #endif // PW_LOG_SHOW_FILENAME |
| |
| } // namespace |
| |
| // This is a fully loaded, inefficient-at-the-callsite, log implementation. |
| extern "C" void pw_Log(int level, |
| unsigned int flags, |
| const char* module_name, |
| const char* file_name, |
| int line_number, |
| const char* function_name, |
| const char* message, |
| ...) { |
| // Accumulate the log message in this buffer, then output it. |
| pw::StringBuffer<150> buffer; |
| |
| // Column: Filename |
| #if PW_LOG_SHOW_FILENAME |
| buffer.Format(" %-30s:%4d |", GetFileBasename(file_name), line_number); |
| #else |
| PW_UNUSED(file_name); |
| PW_UNUSED(line_number); |
| #endif |
| |
| // Column: Function |
| #if PW_LOG_SHOW_FUNCTION |
| buffer.Format(" %20s |", function_name); |
| #else |
| PW_UNUSED(function_name); |
| #endif |
| |
| // Column: Module |
| #if PW_LOG_SHOW_MODULE |
| buffer << " " BOLD; |
| buffer.Format("%3s", module_name); |
| buffer << RESET " "; |
| #else |
| PW_UNUSED(module_name); |
| #endif // PW_LOG_SHOW_MODULE |
| |
| // Column: Flag |
| #if PW_LOG_SHOW_FLAG |
| #if PW_EMOJI |
| buffer << (flags ? "đŠ" : " "); |
| #else |
| buffer << (flags ? "*" : "|"); |
| #endif // PW_EMOJI |
| buffer << " "; |
| #else |
| PW_UNUSED(flags); |
| #endif // PW_LOG_SHOW_FLAG |
| |
| // Column: Level |
| buffer << LogLevelToLogLevelName(level) << " "; |
| |
| // Column: Message |
| va_list args; |
| va_start(args, message); |
| buffer.FormatVaList(message, args); |
| va_end(args); |
| |
| // All done; flush the log. |
| pw::sys_io::WriteLine(buffer.view()); |
| } |