gui-hash.py

import hashlib
from tkinter import *
from tkinter.ttk import *
from tkinter.filedialog import askopenfilename
 
# how to use checkbutton: https://stackoverflow.com/questions/4236910/getting-tkinter-check-box-state
 
FOUR_KIBIBYTES = 2**10*4
 
def compute_hashes(file_path, *hashes):
    hashes = [hashlib.new(hash) for hash in hashes]
    with open(file_path, 'rb') as f:
        data = f.read(FOUR_KIBIBYTES)
        while data:
            for i in range(len(hashes)):
                hashes[i].update(data)  # if only python was multi-threaded.
            data = f.read(FOUR_KIBIBYTES)
        return [h.name +' '+ h.hexdigest() for h in hashes]
           
class ReadOnlyText(Text):
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.configure(state=DISABLED)
   
    def insert(self, *args, **kwargs):
        was_disabled = False
        if self['state'] == DISABLED:
            was_disabled = True
            self.toggle_state()
        self.delete(1.0, END)
        super().insert(*args, **kwargs)
        if was_disabled:
            self.toggle_state()
   
    def toggle_state(self):
        if self['state'] == DISABLED:
            self.configure(state=NORMAL)
        else:
            self.configure(state=DISABLED)
           
 
root = Tk()
check_box_frame = Frame(root)
checkboxes = []
 
# create checkboxes
for hash in hashlib.__all__:
    if any(map(hash.startswith, ('new', 'algo', 'shake', 'pbkdf'))):
        continue
    else:
        c = Checkbutton(check_box_frame, text=hash)
        c.state(['!alternate'])
        if hash == 'md5' or hash == 'sha1':
            c.state(['selected'])
        checkboxes.append(c)
   
# arrange checkbox grid
checkboxes.sort(key=lambda x: x['text'])
row,col = 0,0
for c in checkboxes:
    if col == 4:
        col = 0
        row += 1
    c.grid(row=row, column=col, sticky=W)
    col += 1
 
check_box_frame.pack()
display = ReadOnlyText(root, height=5, width=10)
display.pack(fill=BOTH, expand=True)
 
# prepare yourself for the crazy lazy
start_button = Button(root, text='Browse', command=lambda:
                      display.insert(1.0,
                        '\n'.join(compute_hashes(
                          askopenfilename(initialdir='.'),
                          *[c['text'] for c in checkboxes if c.state()]
                        ))
                      )
               ).pack()
               
edit_mode = Checkbutton(root, text='edit mode', command=display.toggle_state)
edit_mode.state(['!alternate'])
edit_mode.pack(side=RIGHT)
               
root.title('fort sumter')
root.geometry('400x200')
root.mainloop()