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PyDOS.py
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PyDOS.py
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import os
try:
from os import sep
except:
sep = os.getcwd()[0]
from time import localtime
from sys import stdin,implementation,path,print_exception
if not sep+'lib' in path:
path.insert(1,sep+'lib')
path.append(sep+'PyBasic')
try:
from pydos_ui import Pydos_ui
except ImportError:
Pydos_ui = None
try:
from pydos_ui import input
except ImportError:
pass
import gc
imp = "B"
if implementation.name.upper() == "MICROPYTHON":
from micropython import mem_info
imp = "M"
elif implementation.name.upper() == "CIRCUITPYTHON":
if not Pydos_ui:
from supervisor import runtime
imp = "C"
gc.collect()
if 'threshold' in dir(gc):
gc.threshold(gc.mem_free() // 4 + gc.mem_alloc())
# The first string may contain wildcards
def _match(first, second):
# If we reach end of both strings, we are done
if len(first) == 0 and len(second) == 0:
return True
# Make sure that the characters after '*' are present
# in second string. Can't contain two consecutive '*'
if len(first) > 1 and first[0] == '*' and len(second) == 0:
return False
if (len(first) > 1 and first[0] == '?') or (len(first) != 0
and len(second) !=0 and first[0] == second[0]):
return _match(first[1:],second[1:])
if first[:1] == '*':
return _match(first[1:],second) or _match(first,second[1:])
return False
def calcWildCardLen(wldCLen,recursiveFail):
wldCLen += 1
if not recursiveFail and wldCLen < 115:
try:
(wldCLen,recursiveFail) = calcWildCardLen(wldCLen,recursiveFail)
except:
recursiveFail = True
return (wldCLen,recursiveFail)
def PyDOS():
global envVars
if "envVars" not in globals().keys():
envVars = {}
_VER = "1.39"
prmpVals = ['>','(',')','&','|','\x1b','\b','<','=',' ',_VER,'\n','$','']
print("Starting Py-DOS...")
envVars["PATH"] = sep+";/PyBasic"
envVars["PROMPT"] = "$C$R$F$P$G"
envVars["LIB"] = ";".join(path[1:])
envVars["DIRSEP"] = sep
if Pydos_ui:
(envVars["_scrHeight"],envVars["_scrWidth"]) = Pydos_ui.get_screensize()
else:
envVars["_scrHeight"] = 24
envVars["_scrWidth"] = 80
scrWdth = int(envVars["_scrWidth"])
wldCLen = 0
recursiveFail = False
(wldCLen,recursiveFail) = calcWildCardLen(wldCLen,recursiveFail)
wldCAdj = int(1+.2*wldCLen)
if imp == "C":
wldCAdj += 5
wldCLen = max(1,wldCLen-wldCAdj)
if wldCLen < 60:
print("Wild card length set to: ",wldCLen)
gc.collect()
aFile = lambda dPth: bool(os.stat(dPth)[0]&(32768))
def anyKey():
print("Press any key to continue . . . ."[:scrWdth],end="")
if Pydos_ui:
while not Pydos_ui.serial_bytes_available():
pass
keyIn = Pydos_ui.read_keyboard(1)
else:
if imp == "C":
while not runtime.serial_bytes_available:
pass
keyIn = stdin.read(1)
print("")
return(keyIn)
def scrnPause(swPause,nLines,scrnLine,scrnEnd=None):
quit = False
i = 0
for sLine in scrnLine:
i += 1
if swPause and nLines >= int(envVars["_scrHeight"])-1:
key = anyKey()
nLines = 0
if key in "QqCc":
quit = True
break
if sLine is not None:
if scrnEnd is None or i<len(scrnLine):
print(sLine)
nLines += 1
else:
print(sLine,end="")
return (quit,nLines)
def exCmd(cFile,passedIn):
try:
with open(cFile) as cf:
if passedIn.find("'") > -1:
exec(f'passedIn = "{passedIn}"\n{cf.read()}')
else:
exec(f"passedIn = '{passedIn}'\n{cf.read()}")
except Exception as err:
print_exception(err)
envVars['lasterror'] = err
except KeyboardInterrupt:
print("^C")
return
def chkPath(tstPath):
validPath = True
simpPath = ""
if tstPath != []:
savDir = os.getcwd()
for path in tstPath:
if path[1:2] == ":":
path = path[2:]
if path == "":
os.chdir(sep)
elif os.getcwd() == sep and path == "..":
validPath = False
break
elif path == ".":
continue
elif path == ".." and len(os.getcwd().split(sep)) == 2:
os.chdir(sep)
elif path == "..":
os.chdir("..")
elif path in os.listdir() and not aFile(path):
os.chdir(path)
else:
validPath = False
break
if validPath:
simpPath = os.getcwd()
os.chdir(savDir)
return((validPath,simpPath))
def pFmt(dPath,trailsep=True):
if dPath == "":
return sep
elif dPath == sep:
return dPath
elif trailsep:
return dPath+(sep if dPath[-1]!=sep else "")
else:
return dPath[:(-1 if dPath[-1] == sep else None)]
def absolutePath(argPath,currDir):
if argPath[:1] == sep:
fullPath = argPath
elif currDir == sep:
fullPath = sep+argPath
else:
fullPath = currDir+sep+argPath
fullPath = pFmt(fullPath,False)
return(fullPath)
srtFnc = lambda v,dP: f"{str(os.stat(dP+v)[0]&(32768))[0]}{v.lower()}*{v}"
def dirLoop(tmpDir,lastDir,isFile,swPause,swWide,swRecur,prSum, \
nLines=0,nFiles=0,tFSize=0,nDirs=0):
wideCols = scrWdth//16
wideCount = 0
dirHeadPrntd = False
quit = False
if "*" in lastDir or "?" in lastDir or isFile:
dirPat = lastDir
lastDir = ""
else:
dirPat = None
dPath = pFmt(pFmt(tmpDir)+lastDir,False)
if dPath == sep+".":
dPath = sep
lastDir = ""
if dirPat is None:
(quit,nLines) = scrnPause(swPause,nLines,["",f"Directory of {dPath.replace('/',('\\' if envVars.get('DIRSEP','/') == '\\' else '/'))}"])
dirHeadPrntd = True
nDirs += 2
if swWide:
if wideCols > 1:
(quit,nLines) = scrnPause(swPause,nLines, \
["[.] [..] "],"")
wideCount += 2
else:
(quit,nLines) = scrnPause(swPause,nLines,["[.]","[..]"],"")
wideCount = 1
else:
scrAdj1 = 52 - min(scrWdth,52)
(quit,nLines) = scrnPause(swPause,nLines, \
[f".{" "*(23-scrAdj1)}<DIR>",f"..{" "*(22-scrAdj1)}<DIR>"])
for _dir in sorted([srtFnc(x,pFmt(dPath)) for x in os.listdir(dPath)]):
_dir = _dir.split('*')[1]
if (dirPat is None or _match(dirPat,_dir[:wldCLen])) and not quit:
dStat = os.stat(f"{pFmt(dPath)}{_dir}")
ForD = aFile(f"{pFmt(dPath)}{_dir}")
if not dirHeadPrntd:
(quit,nLines) = scrnPause(swPause,nLines,["","Directory of "+dPath.replace('/',('\\' if envVars.get('DIRSEP','/') == '\\' else '/'))])
if quit:
break
dirHeadPrntd = True
if not ForD:
fSize = 0
nDirs += 1
else:
fSize = str(dStat[6])
tFSize += int(fSize)
nFiles += 1
if swWide:
if wideCount >= wideCols:
wideCount = 0
print()
nLines += 1
wideCount += 1
if not ForD:
(quit,nLines) = scrnPause(swPause,nLines, \
[f"[{_dir[:13]}]{" "*(14-len(_dir[:13]))}"],"")
else:
(quit,nLines) = scrnPause(swPause,nLines, \
[_dir[:15]+" "*(16-len(_dir[:15]))],"")
else:
fTime = localtime(max(min(2145916800,dStat[9]),946684800))
if not ForD:
scrAdj1 = 52 - min(scrWdth,52)
scrAdj2 = min(13,65-min(scrWdth,65))
(quit,nLines) = scrnPause(swPause,nLines, \
[f"{_dir[:max(8,scrWdth-26)]}{" "*(24-len(_dir)-scrAdj1)}<DIR>{" "*(18-scrAdj2)}{fTime[1]:02}-{fTime[2]:02}-{fTime[0]:04} {fTime[3]:02}:{fTime[4]:02}"])
else:
scrAdj1 = 65 - min(scrWdth,65)
(quit,nLines) = scrnPause(swPause,nLines, \
[f"{_dir[:max(8,scrWdth-20-len(fSize))]}{" "*(36-len(_dir)+10-len(fSize)-scrAdj1)}{fSize} {fTime[1]:02}-{fTime[2]:02}-{fTime[0]:04} {fTime[3]:02}:{fTime[4]:02}"])
if quit:
break
if not quit:
if swWide:
if dirHeadPrntd:
print()
nLines += 1
if swRecur:
for _dir in sorted(os.listdir(dPath), key=str.upper):
dStat = pFmt(dPath)+_dir
if not aFile(dStat):
try:
(nLines,nFiles,tFSize,nDirs,quit) = \
dirLoop(dStat,(dirPat if dirPat is not None else ""), \
isFile,swPause,swWide,swRecur,False, \
nLines,nFiles,tFSize,nDirs)
except:
print("Recursion limit exceeded, Pystack too small")
quit = True
if quit:
break
if prSum and not quit:
try:
availDisk = os.statvfs(dPath)[1]*os.statvfs(dPath)[4]
except:
availDisk = 0
scrAdj1 = 65 - min(scrWdth,65)
(quit,nLines) = scrnPause(swPause,nLines, \
[(f"{" "*(4-len(str(nFiles)))} {nFiles} File(s){" "*(32-len(str(tFSize))-scrAdj1)} {tFSize} Bytes.")[:scrWdth], \
(f"{" "*(4-len(str(nDirs)))} {nDirs} Dir(s){" "*(33-len(str(availDisk))-scrAdj1)} {availDisk} Bytes free.")[:scrWdth],""],"")
return (nLines,nFiles,tFSize,nDirs,quit)
def prDir(dirPath,swBits):
if swBits & (swAllB-int('010110',2)):
print("Illegal switch, Command Format: DIR[/p][/w][/s] [path][file]")
return
savDir = os.getcwd()
fullPath = absolutePath(dirPath,savDir)
pathDirs = fullPath.split(sep)
lastDir = pathDirs.pop(-1)
(validPath, tmpDir) = chkPath(pathDirs)
if validPath:
os.chdir(tmpDir)
if tmpDir == sep:
pathDirs = [""]
else:
pathDirs = tmpDir.split(sep)
# Check for relative directory from possible mount point root
if len(pathDirs) == 2:
if lastDir == ".":
os.chdir(sep)
lastDir = tmpDir[1:]
elif lastDir == "..":
os.chdir(sep)
lastDir = ""
tmpDir = os.getcwd()
if lastDir in os.listdir() or lastDir in ".." or "*" in lastDir or "?" in lastDir or \
swBits & int('000010',2):
if lastDir in os.listdir():
if aFile(pFmt(lastDir,False)):
isFile = True
else:
isFile = False
else:
if lastDir in ".." or (tmpDir == sep and lastDir == ""):
isFile = False
else:
isFile = True
dirLoop(tmpDir,lastDir,isFile,bool(swBits&int('000100',2)),bool(swBits&int('010000',2)),bool(swBits&int('000010',2)),True)
else:
print("File",dirPath,"not found. (1)")
os.chdir(savDir)
else:
print("File",dirPath,"not found. (2)")
return
def filecpy(file1,file2):
gc.collect()
with open(file2, "wb") as fCopy:
with open(file1, 'rb') as fOrig:
for line in fOrig:
fCopy.write(line)
return
def delFiles(Dir,File,Recurs,removDirs):
for _dir in os.listdir(pFmt(Dir,False)):
if _match(File,_dir[:wldCLen]):
if File == "*" or File == "*.*" or _dir == _dir[:wldCLen]:
if aFile(Dir+_dir):
try:
os.remove(Dir+_dir)
print((Dir+_dir).replace('/',('\\' if envVars.get('DIRSEP','/') == '\\' else '/')),"deleted.")
except Exception as err:
print(f"Unable to delete: {Dir}{_dir}, Exception: {err}")
break
elif Recurs:
delFiles(Dir+_dir+sep,'*',Recurs,removDirs)
if removDirs:
if os.getcwd() == Dir+_dir:
os.chdir("..")
try:
os.rmdir(Dir+_dir)
except Exception as err:
print(f"Unable to remove: {Dir}{_dir}, Exception: {err}")
break
else:
print("Unable to delete: "+Dir+_dir+". Filename too long for wildcard operation.")
elif Recurs and not removDirs and not aFile(Dir+_dir):
delFiles(Dir+_dir+sep,File,Recurs,removDirs)
def setCondCmd(args,i,condResult):
condCmd = ""
foundElse = False
for _ in args[i:]:
if condResult:
if _.upper() == "ELSE":
break
condCmd += (_+" ")
else:
if foundElse:
condCmd += (_+" ")
else:
if _.upper() == "ELSE":
foundElse = True
return condCmd
def readBATFile(BATfile):
batIndex = [0]
batLabels = {}
batLineNo = 0
for batLine in BATfile:
batIndex.append(batIndex[batLineNo]+len(batLine))
batLineNo += 1
if batLine.strip()[:1] == ":" and len(batLine.strip().split(" ")[0]) > 1:
batLabels[batLine.strip().split(" ")[0][1:]] = [batLineNo,batIndex[batLineNo]]
BATfile.seek(0)
del batIndex,batLineNo
return batLabels
batEcho = True
cmd = ""
condCmd = ""
os.chdir(sep)
if "autoexec.bat" in ",".join(os.listdir()).lower().split(','):
activeBAT = True
BATfile = open(os.listdir()[(",".join(os.listdir()).lower().split(",")).index("autoexec.bat")])
batLabels = readBATFile(BATfile)
batLineNo = 0
batParams = []
else:
activeBAT = False
gc.collect()
while True:
scrWdth = int(envVars["_scrWidth"])
if condCmd != "":
cmdLine = condCmd
condCmd = ""
else:
if activeBAT:
cmdLine = BATfile.readline()
i=1
for param in batParams:
cmdLine = cmdLine.replace(f'%{i}',param)
i+=1
if i>9:
break
batLineNo += 1
if cmdLine == "":
activeBAT = False
batEcho = True
BATfile.close()
gc.collect()
elif batEcho and cmdLine[0] !="@":
print(cmdLine,end="")
elif cmdLine[0] == "@":
cmdLine = cmdLine[1:]
else:
prompt = "\n"
prmpLitrl = True
for prmpToken in envVars.get('PROMPT','$C$R$F$P$G').replace("$$","$."):
if prmpToken == '$':
prmpLitrl = False
continue
if prmpLitrl:
prompt += prmpToken
else:
prmpToken = prmpToken.upper()
prmpLitrl = True
if prmpToken == 'R':
if 'mem_free' in dir(gc):
prompt += str(gc.mem_free())
elif prmpToken == 'D':
prompt += f"{localtime()[1]:02}/{localtime()[2]:02}/{localtime()[0]:04}"
elif prmpToken == 'T':
prompt += f"{localtime()[3]:02}:{localtime()[4]:02}:{localtime()[5]:02}"
elif prmpToken == 'P':
prompt += os.getcwd().replace('/',('\\' if envVars.get('DIRSEP','/') == '\\' else '/'))
else:
prompt += prmpVals['GCFABEHLQSV_.'.find(prmpToken)]
cmdLine = input(prompt)
cmdLine = cmdLine.strip()
envFound = False
fndVar = ""
newCmdLine = ""
for _ in cmdLine:
if not envFound:
if _ == "%":
envFound = True
doublepct = True
else:
newCmdLine += _
else:
if _ == "%":
if doublepct:
newCmdLine += "%"
envFound = False
newCmdLine += str(envVars.get(fndVar,""))
fndVar = ""
else:
doublepct = False
fndVar += _
if envVars.get('DIRSEP','/') == '\\':
switches = []
switch = ""
nxt = False
cmdLine = newCmdLine[:1].replace('\\','/')
for _ in newCmdLine[1:]:
if nxt and _ not in " /":
switch += _.upper()
elif _ == '/':
nxt = True
if switch != "":
switches.append(switch)
switch = ""
elif nxt and _ == " ":
cmdLine += _
nxt = False
switches.append(switch)
switch = ""
elif _ == "\\":
cmdLine += sep
else:
cmdLine += _
if switch != "":
switches.append(switch)
else:
cmdLine = newCmdLine
args = cmdLine.split(" ")
quotedArg = False
if len(args) > 1:
i = 0
iEnd = len(args)
for _ in range(0, iEnd):
if args[i].strip() == "":
args.pop(i)
elif quotedArg:
if args[i].find('"') > -1 and args[i].find('"') != len(args[i])-1:
break
elif args[i][-1] == '"':
args[i-1] = f"{args[i-1]} {args.pop(i)[:-1]}"
quotedArg = False
else:
args[i-1] = f"{args[i-1]} {args.pop(i)}"
elif args[i][0] == '"':
if args[i][-1] != '"':
args[i] = args[i][1:]
i += 1
quotedArg = True
else:
args[i] = args[i][1:-1]
i += 1
else:
i += 1
if cmdLine != "" and cmdLine[0] != '/':
tmp = (args[0].upper()).split('/')
if envVars.get('DIRSEP','/') != '\\':
switches = tmp
cmd = tmp.pop(0)
else:
if envVars.get('DIRSEP','/') != '\\':
switches = []
cmd = args[0]
# Error=1, (S)Recur=2, (P)Pause=4, (Y)Conf=8, (W)Wide=16, (D)debug=32, (Q)uiet=64
# (V)erify=128
swBits = 0
swAllB = int('11111111',2)
for i in range(len(switches)):
swBits = swBits | (2**('SPYWDQV'.find(switches[i])+1))
if quotedArg:
print("Mismatched quotes.")
cmd = ""
if cmd in ["DELETE","DEL","TYPE","MORE","MKDIR","MD","RMDIR","RD","COPY", \
"CHDIR","CD","RENAME","REN","MOVE","DELTREE"]:
if len(args) > 1:
savDir = os.getcwd()
args[1] = absolutePath(args[1],savDir)
aPath = args[1].split(sep)
if cmd not in ["RMDIR","RD","CHDIR","CD","DELTREE"]:
newdir = aPath.pop(-1)
(validPath,tmpDir) = chkPath(aPath)
if cmd in ["DELETE","DEL","TYPE","MORE","MKDIR","MD"]:
tmpDir = pFmt(tmpDir)
if cmd == "" or cmd == "REM":
continue
elif cmd == "DIR":
if len(args) == 1:
prDir(os.getcwd()[(2 if os.getcwd()[1:2]==":" else 0):],swBits)
elif len(args) == 2:
prDir(args[1],swBits)
else:
print("Too many arguments. Command Format: DIR/p/w/s [path][file]")
elif cmd == "DATE":
i = localtime()[6]*3
print(f'The current date is: {"MonTueWedThuFriSatSun"[i:i+3]} {localtime()[1]:02}/{localtime()[2]:02}/{localtime()[0]:04}')
elif cmd == "TIME":
print(f"The current time is: {localtime()[3]%12}:{localtime()[4]:02}:{localtime()[5]:02} {["AM","PM"][localtime()[3]//12]}")
elif cmd == "MEM":
gc.collect()
print(f"\n{gc.mem_free()/1024:10.1f} Kb free conventional memory")
print(f"{gc.mem_alloc()/1024:10.1f} Kb used conventional memory")
if imp == "M":
if 'threshold' in dir(gc):
print(f"{gc.threshold()/1024:10.1f} Kb current threshold value")
if swBits & int('010000',2):
print(mem_info(1))
elif swBits:
print("Illegal switch, Command Format: mem[/d]")
elif cmd == "VER":
print(f"PyDOS [Version {_VER}]")
elif cmd == "ECHO":
if len(args) == 1:
print("Echo is "+("on." if batEcho else "off."))
else:
if args[1].upper() == 'ON':
batEcho = True
elif args[1].upper() == 'OFF':
batEcho = False
else:
print(cmdLine[5:].replace("\e",chr(27)).replace('\x1b',chr(27)).replace("\E",chr(27)).replace('\X1B',chr(27)))
elif cmd == "PAUSE":
anyKey()
elif cmd[0] == ":" and activeBAT:
if len(args[0]) <= 1 or len(args) != 1:
print("Invalid batch label")
condCmd = "exit"
elif cmd == "GOTO" and activeBAT:
if len(args) == 2:
try:
BATfile.seek(batLabels[args[1]][1])
except:
print("Invalid Goto label:",args[1])
condCmd = "exit"
batLineNo = batLabels.get(args[1],[batLineNo+1,0])[0]
else:
print("Invalid Goto label:",cmdLine)
condCmd = "exit"
elif cmd == "IF" and activeBAT:
condResult = False
if len(args) < 3:
print("Invalid command format:",cmdLine)
condCmd = "exit"
else:
i = 1
notlogic = False
if args[1].upper() == "NOT":
notlogic = True
i = 2
if args[i].strip().upper() == 'ERRORLEVEL':
i += 1
if len(args) > i and args[i].isdigit():
if str(envVars.get('errorlevel')).isdigit() and int(envVars.get('errorlevel')) == int(args[i]):
condResult = True
if notlogic:
condResult = not condResult
i += 1
condCmd = setCondCmd(args,i,condResult)
else:
print("Invalid conditional ERRORLEVEL:",cmdLine)
condCmd = "exit"
elif args[i].strip().upper() == 'EXIST':
i += 1
if len(args) > i:
savDir = os.getcwd()
args[i] = absolutePath(args[i],savDir)
aPath = args[i].split(sep)
newdir = aPath.pop(-1)
(validPath, tmpDir) = chkPath(aPath)
tmpDir = pFmt(tmpDir)
if validPath and newdir in os.listdir(pFmt(tmpDir,False)):
condResult = True
if notlogic:
condResult = not condResult
i += 1
condCmd = setCondCmd(args,i,condResult)
else:
print("Invalid conditional EXIST:",cmdLine)
condCmd = "exit"
else:
# string comparison
if len(args) > i:
string1 = args[i]
if "==" in args[i]:
string1 = args[i].split("==")[0]
if args[i][-1] != "=":
string2 = args[i].split("==")[-1]
else:
i += 1
if len(args) > i:
string2 = args[i]
else:
print("Invalid string conditional:",cmdLine)
condCmd = "exit"
elif len(args) > i+1:
i += 1
if "==" in args[i]:
if len(args[i]) > 2:
string2 = args[i].split("==")[-1]
else:
i+=1
if len(args) > i:
string2 = args[i]
else:
print("Invalid string conditional:",cmdLine)
condCmd = "exit"
else:
print("Invalid string conditional:",cmdLine)
condCmd = "exit"
else:
print("Invalid string conditional:",cmdLine)
condCmd = "exit"
if condCmd != "exit":
if string1 == string2:
condResult = True
if notlogic:
condResult = not condResult
i += 1
condCmd = setCondCmd(args,i,condResult)
else:
print("Invalid string conditional:",cmdLine)
condCmd = "exit"
elif cmd == "SET":
if len(args) == 1:
for _ in sorted(envVars):
print(f"{_}={envVars[_]}")
else:
args = cmdLine.split(" ")
args.pop(0)
envCmd = (" ".join(args)).split("=")
envCmdVar = envCmd.pop(0).strip()
if len(switches) <= 1:
if len(switches) == 0:
tmp = "=".join(envCmd).strip()
elif switches[0] == 'A':
# Replace all possible environment variables with their values
envCmd = "=".join(envCmd)
for _ in " %*()-+/":
envCmd = envCmd.replace(_," ")
envCmd = envCmd.split(" ")
for _ in envCmd:
if _[:1].isalpha() or _[:1] == "_":
cmdLine = cmdLine.replace(_.strip(),str(envVars.get(_,0)))
# Evaluate right sight of = after value substituion
args = cmdLine.split(" ")
args.pop(0)
envCmd = (" ".join(args)).split("=")
envCmdVar = envCmd.pop(0).strip()
try:
envVars[envCmdVar] = str(eval("=".join(envCmd).strip()))
except:
envVars[envCmdVar] = "0"
elif switches[0] == "P":
tmp = input("=".join(envCmd).strip()+" ")
else:
print("Illegal switch, Command Format: SET[/a|/p] [variable = [string|expression]]")
if len(switches) == 0 or switches[0] == "P":
if tmp != "":
envVars[envCmdVar] = tmp
elif envCmdVar == "_scrHeight" or envCmdVar == "_scrWidth":
if Pydos_ui:
(tHeight,tWidth) = Pydos_ui.get_screensize()
else:
tHeight = 24
tWidth = 80
if envCmdVar == "_scrWidth":
envVars[envCmdVar] = tWidth
else:
envVars[envCmdVar] = tHeight
elif envVars.get(envCmdVar) != None:
envVars.pop(envCmdVar)
scrWdth = int(envVars["_scrWidth"])
if envCmdVar == 'LIB':
path.clear()
path.extend(['']+envVars.get("LIB","").split(';'))
else:
print("Illegal switch, Command Format: SET[/a|/p] [variable = [string|expression]]")
elif cmd in ["PROMPT","PATH"]:
if len(args) == 1:
print(cmd+"="+envVars.get(cmd,""))
else:
envVars[cmd] = args[1]
elif cmd in ["RENAME","REN","MOVE"]:
# todo: allow source to be file and target directory?
# Wildcard renames
# renames across sd mount points
if len(args) == 3:
# Check that first argument has a valid path and exists
if validPath and newdir in os.listdir(tmpDir) and args[1][-1] != sep:
args[2] = absolutePath(args[2],savDir)
aPath2 = args[2].split(sep)
newdir2 = aPath2.pop(-1)
(validPath, tmpDir2) = chkPath(aPath2)
if newdir2 == '*':
newdir2 = newdir
# Second argument has valid path
if validPath and args[2][-1] != sep and '?' not in newdir2 and \
'*' not in newdir2 and newdir2 !="." and newdir2 != "..":
# second argument doesn't specify an existing target
if newdir2 not in os.listdir(tmpDir2):
currDRen = False
if not aFile(tmpDir+sep+newdir):
if tmpDir+sep+newdir == os.getcwd():
currDRen = True
os.rename(pFmt(tmpDir)+newdir,pFmt(tmpDir2)+newdir2)
if currDRen:
os.chdir(tmpDir2)
else:
print("Target file exists")
else:
print("Invalid target:",args[2])
else:
print("Invalid source:",args[1])
else:
print("Wrong number of arguments")
elif cmd in ["DELETE","DEL"]:
if len(args) == 2:
if validPath:
if not (swAllB-int('000010',2)) & swBits:
if "*" in newdir or "?" in newdir:
ans = "Y"
if newdir == "*" or newdir == "*.*":
ans = input(tmpDir+newdir+", Are you sure (y/n)? ").upper()
if ans == "Y":
delFiles(tmpDir,newdir,bool(swBits&int('000010',2)),False)
else:
if newdir in os.listdir(pFmt(tmpDir,False)):
if aFile(tmpDir+newdir):
os.remove(tmpDir+newdir)
print((tmpDir+newdir).replace('/',('\\' if envVars.get('DIRSEP','/') == '\\' else '/')),"deleted.")
else:
ans = input(tmpDir+newdir+sep+"*, Are you sure (y/n)? ").upper()
if ans == "Y":
delFiles(tmpDir+newdir+sep,'*',bool(swBits&int('000010',2)),False)
else:
if swBits & int('000010',2):
ans = input(tmpDir+newdir+sep+"*, Are you sure (y/n)? ").upper()
if ans == "Y":
delFiles(tmpDir,newdir,True,False)
else:
print(f"Unable to delete: {tmpDir}{newdir}. File not found.")
else:
print("Illegal switch, Command Format: DEL[/s] [path][file]")
else:
print(f"Unable to delete: {tmpDir}{newdir}. File not found.")
else:
print("Illegal Path.")
elif cmd in ["TYPE","MORE"]:
if len(args) == 2:
if validPath and newdir in os.listdir(pFmt(tmpDir,False)) and aFile(tmpDir+newdir):
if cmd == "MORE":
swBits = swBits | int('000100',2)
if not ((swAllB-int('000100',2)) & swBits):
swPause = bool(swBits & int('000100',2))
key = " "
with open(tmpDir+newdir, "rb") as f:
nLines = 0
for line in f:
istrt = 0
while istrt+scrWdth < len(line):
(quit,nLines) = scrnPause(swPause,nLines,[None])
try:
print(line[istrt:istrt+scrWdth].decode())
except:
print(chr(65534)*scrWdth)
nLines += 1
istrt += scrWdth
(quit,nLines) = scrnPause(swPause,nLines,[None])
if quit:
break
try:
print(line[istrt:len(line)].decode(),end="")
except:
print(chr(65534)*(len(line)-istrt))
nLines += 1
else:
print("Illegal switch, Command Format: TYPE[/p] [path][file]")
else:
print(f"Unable to display: {tmpDir}{newdir}. File not found.")
else:
print("Illegal Path.")
elif cmd in ["CHDIR","CD"]:
if len(args) == 1:
print(os.getcwd().replace('/',('\\' if envVars.get('DIRSEP','/') == '\\' else '/')))
else:
if validPath:
os.chdir(tmpDir)
else:
print("Unable to change to:",args[1])
elif cmd in ["MKDIR","MD"]:
if len(args) == 1:
print("Unable to make .")
elif len(args) > 2:
print("Too many arguments")
else:
if validPath:
if newdir not in os.listdir(pFmt(tmpDir,False)):
os.mkdir(tmpDir+newdir)
else:
print("Target name already exists")
else:
print("Invalid path")
elif cmd in ["RMDIR","RD","DELTREE"]:
if len(args) == 2 and validPath:
if cmd == "DELTREE":
swBits = int('000010',2)
if not (swBits & (swAllB-int('000010',2))):
if tmpDir != sep:
if swBits & int('000010',2):
ans = input(tmpDir+" Are you sure (y/n)? ").upper()
if ans == "Y":
delFiles(tmpDir+sep,'*',bool(swBits&int('000010',2)),True)