TechOS BETA V.1.3.8439

import subprocess , os , time , sys , enum , platform , pathlib

os.chdir(str(pathlib.Path.home()))
wd = str(pathlib.Path.home())
prompt = wd + ">"
path = os.getcwd() + ";" + os.path.abspath(os.sep)

def getSystem() :
    system = platform.system()
    if system == "Windows" :
        return 0
    elif system == "Linux" :
        return 1
    else :
        return 2

def initializePath() :
    global path
    if getSystem() == 0 :
        path+=";" + os.environ["PATH"]

class Types(enum.Enum) :
    TYPE = "<class 'type'>"
    INTEGER = "<class 'int'>"

def handleBuiltIn(txt) :
    global wd
    txt = calculateFormat(txt)

    if txt[0] == "cd" :
        if len(txt) < 2 :
            print(wd)
            return 0
        else :
            if checkPath(txt[1] , 1) :
                    wd = os.path.abspath(txt[1])
                    return 0
            else :
                return 1

    if txt[0] == "ls" :
        if len(txt) < 2 :
            ls(wd)
            return 0
        else :
            if checkPath(txt[1] , 1) :
                ls(txt[1])
                return 0
            else :
                return 2

    if txt[0] == "exit" :
        sys.exit(0)

    if txt[0] == "cat" :
        if len(txt) < 2 :
            print("Illegal Args")
        else :
            cat(txt[1])

    return 1

def ls(path) :
    files = os.listdir(os.path.abspath(path))
    totalsize = 0
    print(".\n..")
    for file in files :
        if os.path.isfile(os.path.abspath(path) + os.sep + file) :
            print(file)
        else :
            print(file + os.sep)
        totalsize += os.path.getsize(os.path.abspath(path) + os.sep + file)
    print("\nTotal Size: " + str(totalsize) + "B")

def cat(path) :
    if checkPath(path , 0) :
        with open(path) as file :
            print(file.read())
        return 0
    else :
        return 1

def checkPath(path , mode) :
    if os.path.exists(path) :
        if os.path.isdir(path) :
            if mode == 0 :
                print("The path is a directory")
                return False
            elif mode == 1 :
                return True
        else :
            if mode == 0 :
                return True
            elif mode == 1 :
                print("The path is a file")
                return False
    else :
        print("Invalid Path")
        return False

def updatePrompt() :
    global prompt
    global wd
    prompt = wd + ">"
    os.chdir(wd)

def calculateFormat(cmd) :
    a = False
    i = 0
    cmd = list(cmd)
    for c in cmd :
        if c == " " :
            cmd[i] = "§"
        i += 1
    cmd.append("§")

    calculated = list()
    temp = ""
    for c in cmd :
        if c == "§" :
            calculated.append(temp)
            temp = ""
            continue
        temp+=c
    return calculated

def getPrograms() :
    global path
    files = list()
    chpath = os.getcwd() + ";" + path
    paths = chpath.split(";")
    for path in paths :
        try :
            pfiles = os.listdir(path)
            for pfile in pfiles :
                files.append([path,pfile])
        except :
            continue
    programs = list()

    for file in files :
        if file[1].endswith(".exe") :
            programs.append(file)

    return programs

def handle(txt) :
    if txt == "" :
        return 7
    code = handleBuiltIn(txt)
    if code < 1 :
        return 0
    elif code == 2 :
        print("Command not found")

    programs = getPrograms()
    for program in programs :
        if txt.lower() == program[1].split(".")[0] :
            try :
                subprocess.run(program[0] + os.sep + program[1], shell=True, check=True)
                return 0
            except :
                print("Process exited with non-0 exit code")
                return 2
    return 1

def handleError(error) :
    if str(type(error)) == Types.INTEGER.value :
        if error == 7 :
            print(end='')

        if error == 1 :
            print("Command not found")

        if error == -1 :
            print("Exiting..." , end='')
            time.sleep(1)
            sys.exit(0)

debug = True
def debug() :
    if debug :
        global path

def init() :
    initializePath()
    debug()

print("Tecnosoft OS [Versione 1.3.8439]")
print("Copyright <c> 2017 MRtecno98 Inc. Tutti i diritti riservati")

def main() :
    init()
    try :
        while True :
            updatePrompt()
            cmd = input("\n" + prompt)
            handleError(handle(cmd))
    except KeyboardInterrupt :
        handleError(-1)

if __name__ == "__main__" :
    main()