composite_exercise.py

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from io import StringIO
 
from .composite_filedirentry import FileDirEntry, FileDirTypes, FileDirEntryList
from .composite_fileaccess import Composite_FileAccess
 
 
def Composite_Exercise_FormatEntry(entry : FileDirEntry, depth : int) -> str:
    NAME_PADDING_SIZE = 20
    output = StringIO()
    spaces = ' ' * (depth * 2)
    output.write("{0}{1}".format(spaces, entry.Name))
    padding = NAME_PADDING_SIZE - len(entry.Name) - (depth * 2)
    if entry.FileDirType == FileDirTypes.Directory:
        output.write("/")
        padding -= 1
    output.write(' ' * padding)
    output.write("{0:4}".format(entry.Length))
    output.write("  {0}".format(entry.WhenModified.strftime("%m/%d/%Y %I:%M:%S %p")))
    output.write("\n")
 
    children = entry.Children
    if children:
        for index in range(0, len(children)):
            output.write(Composite_Exercise_FormatEntry(children[index], depth + 1))
 
    return output.getvalue()
 
 
 
 
def Composite_Exercise_ShowEntry(entry : FileDirEntry) -> None:
    output = Composite_Exercise_FormatEntry(entry, 2)
    print(output)
 
 
 
 
# ! [Using Composite in Python]
def Composite_Exercise():
    print()
    print("Composite Exercise")
 
    try:
        filepath = "root"
        rootEntry = Composite_FileAccess.GetEntry(filepath)
        print("  Showing object '{}'".format(filepath))
        Composite_Exercise_ShowEntry(rootEntry)
 
        filepath = "root/subdir1/FileD.txt"
        rootEntry = Composite_FileAccess.GetEntry(filepath)
        print("  Showing object '{}'".format(filepath))
        Composite_Exercise_ShowEntry(rootEntry)
    except FileNotFoundError as ex:
        print("Error! {} ".format(ex))
 
    print("  Done.")
# ! [Using Composite in Python]