logmeow/log.cpp

#include <ctime>
#include <string>
#include <vector>
#include <exception>

#include "log.h"

std::string log_entries;
std::vector<size_t> log_entry_line_offsets = {0};

std::string format_log(std::string entry, time_t time) {
    size_t newline_pos;
    char time_as_str[128] = {0};

    strftime(time_as_str, 127 * sizeof(char), "%c", localtime(&time));
    while ((newline_pos = entry.find('\n')) != std::string::npos) {
        entry.replace(newline_pos, 1, 1, ' ');
    }

    return std::string(1, '[') + time_as_str + "] " + std::move(entry);
}

std::string format_log(std::string entry) {
    return format_log(std::move(entry), time(nullptr));
}

void log_raw(std::string line, bool print) {
    if (print) {
        printf("%s\n", line.c_str());
    }
    if (!log_entries.empty()) {
        log_entries += '\n';
        log_entry_line_offsets.push_back(log_entries.size());
    }
    log_entries += std::move(line);
}

void log(std::string entry, time_t time) {
    log_raw(format_log(std::move(entry), time));
}

void log(std::string entry) {
    log_raw(format_log(std::move(entry)));
}