examples/darwin-framework-tool/logging/logging.mm

/*
 *   Copyright (c) 2022 Project CHIP Authors
 *   All rights reserved.
 *
 *   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.
 *
 */

#import <Matter/Matter.h>

#import "logging.h"

#include <algorithm>
#include <cstdio>
#include <lib/support/logging/CHIPLogging.h>
#include <pthread.h>

namespace dft {
namespace logging {

    void LogMessage(MTRLogType type, NSString * component, NSString * message)
    {
        auto kLoggingColorError = @"\033[1;31m";
        auto kLoggingColorProgress = @"\033[0;32m";
        auto kLoggingColorDetail = @"\033[0;34m";
        auto kLoggingColorEnd = @"\033[0m";

        NSString * loggingColor = nil;

        switch (type) {
        case MTRLogTypeError:
            loggingColor = kLoggingColorError;
            break;
        case MTRLogTypeProgress:
            loggingColor = kLoggingColorProgress;
            break;
        case MTRLogTypeDetail:
            loggingColor = kLoggingColorDetail;
            break;
        }

        auto formatter = [[NSDateFormatter alloc] init];
        formatter.dateFormat = @"yyyy-MM-dd HH:mm:ss.SSS";
        auto formattedDate = [formatter stringFromDate:[NSDate date]];

        int pid = [[NSProcessInfo processInfo] processIdentifier];

        auto tid = pthread_mach_thread_np(pthread_self());

        fprintf(stdout, "%s%s [%d:%u] [%s]: %s%s\n", loggingColor.UTF8String, formattedDate.UTF8String, pid, tid,
            component.UTF8String, message.UTF8String, kLoggingColorEnd.UTF8String);
    }

    void LogRedirectCallback(const char * moduleName, uint8_t category, const char * format, va_list args)
    {
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wformat-nonliteral"
        // Note: Format using NSString so that '%@' placeholders are supported
        NSString * message = [[NSString alloc] initWithFormat:@(format) arguments:args];
#pragma clang diagnostic pop

        auto type = std::min(static_cast<MTRLogType>(category), MTRLogTypeDetail);
        LogMessage(type, @(moduleName), message);
    }

    void Setup()
    {
        MTRSetLogCallback(MTRLogTypeDetail, ^(MTRLogType type, NSString * component, NSString * message) {
            LogMessage(type, component, message);
        });

        // We also have a second copy of the logging core floating around, so
        // need to set up a logging redirect on that too.
        chip::Logging::SetLogRedirectCallback(&LogRedirectCallback);
    }

}
}