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"""
Misc helper functions.
"""
import json
import os
import shutil
import subprocess
class Color:
"""Color formats."""
alpha_num = 100
def __init__(self, hex_color):
self.hex_color = hex_color
def __str__(self):
return self.hex_color
@property
def rgb(self):
"""Convert a hex color to rgb."""
red, green, blue = hex_to_rgb(self.hex_color)
return "%s,%s,%s" % (red, green, blue)
@property
def xrgba(self):
"""Convert a hex color to xrdb rgba."""
return hex_to_xrgba(self.hex_color)
@property
def alpha(self):
"""Add URxvt alpha value to color."""
return "[%s]%s" % (self.alpha_num, self.hex_color)
def read_file(input_file):
"""Read data from a file and trim newlines."""
with open(input_file, "r") as file:
data = file.read().splitlines()
return data
def read_file_json(input_file):
"""Read data from a json file."""
with open(input_file, "r") as json_file:
data = json.load(json_file)
return data
def read_file_raw(input_file):
"""Read data from a file as is, don't strip
newlines or other special characters.."""
with open(input_file, "r") as file:
data = file.readlines()
return data
def save_file(data, export_file):
"""Write data to a file."""
create_dir(os.path.dirname(export_file))
try:
with open(export_file, "w") as file:
file.write(data)
except PermissionError:
print("warning: Couldn't write to %s." % export_file)
def save_file_json(data, export_file):
"""Write data to a json file."""
create_dir(os.path.dirname(export_file))
with open(export_file, "w") as file:
json.dump(data, file, indent=4)
def create_dir(directory):
"""Alias to create the cache dir."""
os.makedirs(directory, exist_ok=True)
def hex_to_rgb(color):
"""Convert a hex color to rgb."""
return tuple(bytes.fromhex(color.strip("#")))
def hex_to_xrgba(color):
"""Convert a hex color to xrdb rgba."""
col = color.lower().strip("#")
return "%s%s/%s%s/%s%s/ff" % (*col,)
def rgb_to_hex(color):
"""Convert an rgb color to hex."""
return "#%02x%02x%02x" % (*color,)
def darken_color(color, amount):
"""Darken a hex color."""
color = [int(col * (1 - amount)) for col in hex_to_rgb(color)]
return rgb_to_hex(color)
def lighten_color(color, amount):
"""Lighten a hex color."""
color = [int(col + (255 - col) * amount) for col in hex_to_rgb(color)]
return rgb_to_hex(color)
def disown(cmd):
"""Call a system command in the background,
disown it and hide it's output."""
subprocess.Popen(cmd,
stdout=subprocess.DEVNULL,
stderr=subprocess.DEVNULL)
def msg(input_msg, notify):
"""Print to the terminal and display a libnotify
notification."""
if notify and shutil.which("notify"):
disown(["notify-send", input_msg])
print(input_msg)
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