first working version with fmt lib

CMakeLists.txt

@@ -7,13 +7,14 @@ set(FSFW_REVISION 0)
 # Add the cmake folder so the FindSphinx module is found
 set(CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake" ${CMAKE_MODULE_PATH})
 
+set(FSFW_ETL_LIB_NAME etl)
+set(FSFW_ETL_LINK_TARGET etl::etl)
 set(FSFW_ETL_LIB_MAJOR_VERSION 20 CACHE STRING
   "ETL library major version requirement"
   )
 set(FSFW_ETL_LIB_VERSION ${FSFW_ETL_LIB_MAJOR_VERSION}.27.3 CACHE STRING
   "ETL library exact version requirement"
   )
-set(FSFW_ETL_LINK_TARGET etl::etl)
 
 set(FSFW_CATCH2_LIB_MAJOR_VERSION 3 CACHE STRING
   "Catch2 library major version requirement"
@@ -22,7 +23,12 @@ set(FSFW_CATCH2_LIB_VERSION v${FSFW_CATCH2_LIB_MAJOR_VERSION}.0.0-preview5 CACHE
   "Catch2 library exact version requirement"
   )
 
-set(FSFW_ETL_LIB_NAME etl)
+set(FSFW_FMT_LIB_NAME fmt)
+set(FSFW_FMT_LINK_TARGET fmt::fmt)
+set(FSFW_FMT_LIB_MAJOR_VERSION 8 CACHE STRING "{fmt} library major version requirement")
+set(FSFW_FMT_LIB_VERSION v${FSFW_FMT_LIB_MAJOR_VERSION}.1.1 CACHE STRING
+  "{fmt} library exact version requirement"
+  )
 
 option(FSFW_GENERATE_SECTIONS
   "Generate function and data sections. Required to remove unused code" ON
@@ -60,7 +66,7 @@ set(FSFW_TEST_TGT fsfw-tests)
 set(FSFW_DUMMY_TGT fsfw-dummy)
 
 project(${LIB_FSFW_NAME})
-add_library(${LIB_FSFW_NAME})
+add_library(${LIB_FSFW_NAME} src/fsfw/serviceinterface/fmtWrapper.h src/fsfw/serviceinterface/fmtWrapper.cpp)
 
 if(FSFW_BUILD_UNITTESTS)
   message(STATUS "Building the FSFW unittests in addition to the static library")
@@ -104,7 +110,7 @@ if(FSFW_BUILD_UNITTESTS)
   endif()
 endif()
 
-message(STATUS "Finding and/or providing ETL library")
+message(STATUS "Finding and/or providing etl (Embedded Template Library)")
 
 # Check whether the user has already installed ETL first
 find_package(${FSFW_ETL_LIB_NAME} ${FSFW_ETL_LIB_MAJOR_VERSION} QUIET)
@@ -125,6 +131,27 @@ if(NOT ${FSFW_ETL_LIB_NAME}_FOUND)
   list(APPEND FSFW_FETCH_CONTENT_TARGETS ${FSFW_ETL_LIB_NAME})
 endif()
 
+message(STATUS "Finding and/or providing {fmt} formatting library")
+
+# Check whether the user has already installed ETL first
+find_package(fmt ${FSFW_FMT_LIB_MAJOR_VERSION} QUIET)
+# Not installed, so use FetchContent to download and provide etl
+if(NOT ${FSFW_FMT_LIB_NAME}_FOUND)
+  message(STATUS
+    "No {fmt} installation was found with find_package. Installing and providing "
+    "{fmt} with FindPackage"
+    )
+  include(FetchContent)
+
+  FetchContent_Declare(
+    ${FSFW_FMT_LIB_NAME}
+    GIT_REPOSITORY https://github.com/fmtlib/fmt.git
+    GIT_TAG        ${FSFW_FMT_LIB_VERSION}
+  )
+
+  list(APPEND FSFW_FETCH_CONTENT_TARGETS ${FSFW_FMT_LIB_NAME})
+endif()
+
 # The documentation for FetchContent recommends declaring all the dependencies
 # before making them available. We make all declared dependency available here
 # after their declaration
@@ -412,6 +439,12 @@ string(CONCAT POST_BUILD_COMMENT
   "######################################################################\n"
   )
 
+# The additional / is important to remove the last character from the path.
+# Note that it does not matter if the OS uses / or \, because we are only
+# saving the path size.
+string(LENGTH "${CMAKE_SOURCE_DIR}/" SOURCE_PATH_SIZE)
+target_compile_definitions(${LIB_FSFW_NAME} PRIVATE "-DFSFW_SOURCE_PATH_SIZE=${FSFW_SOURCE_PATH_SIZE}")
+
 add_custom_command(
   TARGET ${LIB_FSFW_NAME}
   POST_BUILD

src/fsfw/serviceinterface/CMakeLists.txt

@@ -1,4 +1,5 @@
 target_sources(${LIB_FSFW_NAME} PRIVATE
+	fmtWrapper.cpp
 	ServiceInterfaceStream.cpp
 	ServiceInterfaceBuffer.cpp
 	ServiceInterfacePrinter.cpp

src/fsfw/serviceinterface/fmtWrapper.cpp

@@ -0,0 +1,24 @@
+#include "fmtWrapper.h"
+
+#include "fsfw/ipc/MutexFactory.h"
+
+std::array<char, 524> sif::PRINT_BUF = {};
+MutexIF* sif::PRINT_MUTEX = nullptr;
+
+const char* sif::PREFIX_ARR[4]= {DEBUG_PREFIX, INFO_PREFIX, WARNING_PREFIX, ERROR_PREFIX};
+
+ReturnValue_t sif::initialize() {
+  sif::PRINT_MUTEX = MutexFactory::instance()->createMutex();
+  if(sif::PRINT_MUTEX == nullptr) {
+    return HasReturnvaluesIF::RETURN_FAILED;
+  }
+  return HasReturnvaluesIF::RETURN_OK;
+}
+
+size_t sif::writeTypePrefix(LogLevel level) {
+  auto idx = static_cast<unsigned int>(level);
+  const auto result =
+      fmt::format_to_n(PRINT_BUF.begin(), PRINT_BUF.size() - 1,
+                       fmt::runtime(fmt::format(fg(LOG_COLOR_ARR[idx]), PREFIX_ARR[idx])));
+  return result.size;
+}

src/fsfw/serviceinterface/fmtWrapper.h

@@ -0,0 +1,164 @@
+#pragma once
+
+#include <fmt/chrono.h>
+#include <fmt/color.h>
+#include <fmt/compile.h>
+#include <fmt/core.h>
+
+#include <array>
+#include <cstdint>
+
+#include "fsfw/ipc/MutexGuard.h"
+#include "fsfw/ipc/MutexIF.h"
+#include "fsfw/timemanager/Clock.h"
+
+// Takes from stackoverflow to display relative paths:
+// https://stackoverflow.com/questions/8487986/file-macro-shows-full-path
+#ifdef FSFW_SOURCE_PATH_SIZE
+#define __FILENAME_REL__ (((const char*)__FILE__ + SOURCE_PATH_SIZE))
+#endif
+
+#define __FILENAME__ (strrchr(__FILE__, '/') ? strrchr(__FILE__, '/') + 1 : __FILE__)
+
+namespace sif {
+
+extern std::array<char, 524> PRINT_BUF;
+extern MutexIF* PRINT_MUTEX;
+
+static const char INFO_PREFIX[] = "INFO";
+static const char DEBUG_PREFIX[] = "DEBUG";
+static const char WARNING_PREFIX[] = "WARNING";
+static const char ERROR_PREFIX[] = "ERROR";
+
+enum class LogLevel : unsigned int { DEBUG = 0, INFO = 1, WARNING = 2, ERROR = 3 };
+
+extern const char* PREFIX_ARR[4];
+
+static const std::array<fmt::color, 4> LOG_COLOR_ARR = {
+    fmt::color::deep_sky_blue, fmt::color::forest_green, fmt::color::orange_red, fmt::color::red};
+
+ReturnValue_t initialize();
+
+size_t writeTypePrefix(LogLevel level);
+
+template <typename... T>
+size_t logTraced(LogLevel level, const char* file, unsigned int line, bool timed,
+                 fmt::format_string<T...> fmt, T&&... args) noexcept {
+  if(PRINT_MUTEX == nullptr) {
+    fmt::print("Please call sif::initialize at program startup\n");
+    return 0;
+  }
+  try {
+    MutexGuard mg(PRINT_MUTEX);
+    size_t bufPos = writeTypePrefix(level);
+    auto currentIter = PRINT_BUF.begin() + bufPos;
+    if (timed) {
+      Clock::TimeOfDay_t logTime;
+      Clock::getDateAndTime(&logTime);
+      const auto result = fmt::format_to_n(currentIter, PRINT_BUF.size() - 1 - bufPos,
+                                           " | {}[l.{}] | {:02}:{:02}:{:02}.{:03} | {}", file, line,
+                                           logTime.hour, logTime.minute, logTime.second,
+                                           logTime.usecond / 1000, fmt::format(fmt, args...));
+      bufPos += result.size;
+    } else {
+      const auto result = fmt::format_to_n(currentIter, PRINT_BUF.size() - 1 - bufPos,
+                                           " | {}[l.{}] | {}", file, line, fmt::format(fmt, args...));
+      bufPos += result.size;
+    }
+    PRINT_BUF[bufPos] = '\0';
+    fmt::print(fmt::runtime(PRINT_BUF.data()));
+    return bufPos;
+  } catch (const fmt::v8::format_error& e) {
+    fmt::print("Printing failed with error: {}\n", e.what());
+    return 0;
+  }
+}
+
+template <typename... T>
+size_t log(LogLevel level, bool timed, fmt::format_string<T...> fmt, T&&... args) noexcept {
+  if(PRINT_MUTEX == nullptr) {
+    fmt::print("Please call sif::initialize at program startup\n");
+    return 0;
+  }
+  try {
+    MutexGuard mg(PRINT_MUTEX);
+    size_t bufPos = writeTypePrefix(level);
+    auto currentIter = PRINT_BUF.begin() + bufPos;
+    if (timed) {
+      Clock::TimeOfDay_t logTime;
+      Clock::getDateAndTime(&logTime);
+      const auto result = fmt::format_to_n(
+          currentIter, PRINT_BUF.size() - bufPos, " | {:02}:{:02}:{:02}.{:03} | {}", logTime.hour,
+          logTime.minute, logTime.second, logTime.usecond / 1000, fmt::format(fmt, args...));
+      bufPos += result.size;
+    } else {
+      const auto result = fmt::format_to_n(
+          currentIter, PRINT_BUF.size() - bufPos, " | {}", fmt::format(fmt, args...));
+      bufPos += result.size;
+    }
+    PRINT_BUF[bufPos] = '\0';
+    fmt::print(fmt::runtime(PRINT_BUF.data()));
+    return bufPos;
+  } catch (const fmt::v8::format_error& e) {
+    fmt::print("Printing failed with error: {}\n", e.what());
+    return 0;
+  }
+}
+
+template <typename... T>
+void fdebug(const char* file, unsigned int line, fmt::format_string<T...> fmt, T&&... args) noexcept {
+  logTraced(LogLevel::DEBUG, file, line, false, fmt, args...);
+}
+
+template <typename... T>
+void fdebug_t(const char* file, unsigned int line, fmt::format_string<T...> fmt, T&&... args) noexcept {
+  logTraced(LogLevel::DEBUG, file, line, true, fmt, args...);
+}
+
+template <typename... T>
+void finfo_t(fmt::format_string<T...> fmt, T&&... args) {
+  log(LogLevel::INFO, true, fmt, args...);
+}
+
+template <typename... T>
+void finfo(fmt::format_string<T...> fmt, T&&... args) {
+  log(LogLevel::INFO, false, fmt, args...);
+}
+
+template <typename... T>
+void fwarning(const char* file, unsigned int line, fmt::format_string<T...> fmt, T&&... args) {
+  logTraced(LogLevel::WARNING, file, line, false, fmt, args...);
+}
+
+template <typename... T>
+void fwarning_t(const char* file, unsigned int line, fmt::format_string<T...> fmt, T&&... args) {
+  logTraced(LogLevel::WARNING, file, line, true, fmt, args...);
+}
+
+template <typename... T>
+void ferror(const char* file, unsigned int line, fmt::format_string<T...> fmt, T&&... args) {
+  logTraced(LogLevel::ERROR, file, line, false, fmt, args...);
+}
+
+template <typename... T>
+void ferror_t(const char* file, unsigned int line, fmt::format_string<T...> fmt, T&&... args) {
+  logTraced(LogLevel::ERROR, file, line, true, fmt, args...);
+}
+
+}  // namespace sif
+
+#define FSFW_LOGI(format, ...) finfo(FMT_STRING(format), __VA_ARGS__)
+
+#define FSFW_LOGIT(format, ...) finfo_t(FMT_STRING(format), __VA_ARGS__)
+
+#define FSFW_LOGD(format, ...) sif::fdebug(__FILENAME__, __LINE__, FMT_STRING(format), __VA_ARGS__)
+
+#define FSFW_LOGDT(format, ...) fdebug_t(__FILENAME__, __LINE__, FMT_STRING(format), __VA_ARGS__)
+
+#define FSFW_LOGW(format, ...) fdebug(__FILENAME__, __LINE__, FMT_STRING(format), __VA_ARGS__)
+
+#define FSFW_LOGWT(format, ...) fdebug_t(__FILENAME__, __LINE__, FMT_STRING(format), __VA_ARGS__)
+
+#define FSFW_LOGE(format, ...) fdebug(__FILENAME__, __LINE__, FMT_STRING(format), __VA_ARGS__)
+
+#define FSFW_LOGET(format, ...) fdebug_t(__FILENAME__, __LINE__, FMT_STRING(format), __VA_ARGS__)