Computercraft Logging API

--Variables
logFile = "logFile.lua"
logShowProgram = false
logShowClearedMessage = true

logTimestampFormat = "[%s]"
logDateTimeFormat = "%F %R"
logProgramFormat = "[%s]"
logClearedMessage = "--LOG CLEARED--"
currentRunningProgram = nil

--Functions
function filePath(path) logFile = tostring(path) end
function setShowProgram(var) logShowProgram = var end
function setShowClearedMessage(setVar) logShowClearedMessage = setVar end
function setCurrentProgram(setvar) currentRunningProgram = setvar end
function setClearedMessage(message) logClearedMessage = tostring(message) end
function setProgramFormat(pFormat) logProgramFormat = pFormat end
function setTimestampFormat(tFormat) logTimestampFormat = tFormat end
function setDateTimeFormat(dFormat) logDateTimeFormat = dFormat end

function reset()
    logFile = "logFile.lua"
    logShowProgram = false
    logShowClearedMessage = true

    logTimestampFormat = "[%s]"
    logDateTimeFormat = "%F %R"
    logProgramFormat = "[%s]"
    logClearedMessage = "--LOG CLEARED--"
    currentRunningProgram = nil
end

function output(statement)
    timeString = string.format(logTimestampFormat, os.date(logDateTimeFormat))
    programString = string.format(logProgramFormat, currentRunningProgram)

    file = fs.open(logFile, "a")
    if logShowProgram == true then
        file.write(timeString..programString..": "..tostring(statement).."\n")
    else
        file.write(timeString..": "..tostring(statement).."\n")
    end
    file.close()
end

function clear()
    timeString = string.format(logTimestampFormat, os.date(logDateTimeFormat))
    programString = string.format(logProgramFormat, currentRunningProgram)

    file = fs.open(logFile, "w")
    if logShowProgram == true and logShowClearedMessage == true then
        file.write(timeString..programString..": "..tostring(logClearedMessage).."\n")
    elseif logShowClearedMessage == true then
        file.write(timeString..": "..tostring(logClearedMessage).."\n")
    end
    file.close()
end