TecnoOS BETA 1.0.0001

import subprocess , os

wd = "C:\\"
prompt = wd + ">"
path = "."

def handleBuiltIn(txt) :
    if txt = "" :
        return 7

    txt = calculateFormat(txt)

    if txt[0] == "cd" :
        if len(txt) < 2 :
            return 1
        else :
            if os.path.exists(txt[1]) :
                if os.path.isdir(txt[1]) :
                    wd = txt[1]
                    return 0
                else :
                    print("The path is a file")
                    return 1
            else :
                print("Insesistent Path")
                return 1
        return 0


def updatePrompt() :
    prompt = wd + ">"

def calculateFormat(cmd) :
    a = False
    i = 0
    cmd = list(cmd)
    for c in cmd :
        if c = '"' :
            if a :
                a = False
            else :
                a = True
        if not a :
            if c == " " :
                cmd[i] = "§"
        i += 1
    return cmd

def getPrograms() :
    files = os.listdir(path)
    programs = list()

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

    return programs

def handle(txt) :
    if txt == "" :
        return 7
    code = handleBuiltIn(txt)
    if code != 1 or code != 7 :
        return 0

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

print("Tecnosoft OS [Versione 1.0.0001]")
print("Copyright <c> 2017 MRtecno98 Inc. Tutti i diritti riservati")
print()

while True :
    cmd = input(prompt)
    handle(txt)
    updatePrompt()