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import subprocess
import logging
import cv2
import platform
import readline
import os
def image_resize(image, width = None, height = None, inter = cv2.INTER_AREA):
# initialize the dimensions of the image to be resized and
# grab the image size
dim = None
(h, w) = image.shape[:2]
# if both the width and height are None, then return the
# original image
if width is None and height is None:
return image
# check to see if the width is None
if width is None:
# calculate the ratio of the height and construct the
# dimensions
r = height / float(h)
dim = (int(w * r), height)
# otherwise, the height is None
else:
# calculate the ratio of the width and construct the
# dimensions
r = width / float(w)
dim = (width, int(h * r))
# resize the image
resized = cv2.resize(image, dim, interpolation = inter)
# return the resized image
return resized
'''
Fetch input prompt with prefilled text.
Parameters:
prompt: Prompt message.
text: Prefilled input.
'''
def input_with_prefill(prompt, text):
def hook():
readline.insert_text(text)
readline.redisplay()
readline.set_pre_input_hook(hook)
result = input(prompt)
readline.set_pre_input_hook()
return result
'''
Checks if the given string is a valid path.
Parameters:
string: String to be checked.
'''
def dir_path(string):
if os.path.isdir(string):
return string
else:
raise NotADirectoryError(string)
'''
Opens the given file with the platform default handler.
Parameters:
file: Path to the file.
'''
def open_system(file):
if platform.system() == 'Darwin': # macOS
subprocess.call(('open', file))
elif platform.system() == 'Windows': # Windows
os.startfile(file)
else: # linux variants
subprocess.call(('xdg-open', file))
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