Function viewFile

fileview.py:17–231

(args,scrsiz=())

#import uselect

def viewFile(args,scrsiz=()):
    # scrsiz can be used if running program from REPL to specify the screen dimensions
    # first import launches with defaults but subsequent launches can use:
    # fileview.viewFile("filename.txt",(height,width))

    def chkPath(tstPath):
        validPath = True
        simpPath = ""

        if tstPath != []:
            savDir = os.getcwd()

            for path in tstPath:
                if path == "":
                    os.chdir("/")
                elif os.getcwd() == "/" and path == "..":
                    validPath = False
                    break
                elif path == ".":
                    continue
                elif path == ".." and len(os.getcwd().split('/')) == 2:
                    os.chdir('/')
                elif path == "..":
                    os.chdir("..")
                elif path in os.listdir() and (os.stat(path)[0] & (2**15) == 0):
                    os.chdir(path)
                else:
                    validPath = False
                    simpPath = ""
                    break

            if validPath:
                simpPath = os.getcwd()
            os.chdir(savDir)

        return((validPath,simpPath))

    def absolutePath(argPath,currDir):

        if argPath[0] == '/':
            fullPath = argPath
        elif currDir == '/':
            fullPath = '/'+argPath
        else:
            fullPath = currDir+'/'+argPath

        if len(fullPath) > 1 and fullPath[-1] == '/':
            fullPath = fullPath[:-1]

        return(fullPath)


    if __name__ == "PyDOS":
        global envVars

        scrLines = int(envVars["_scrHeight"])
        scrWidth = int(envVars["_scrWidth"])
    elif scrsiz: