132 lines
3.8 KiB
Python
132 lines
3.8 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2015 Mike Fährmann
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License version 2 as
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# published by the Free Software Foundation.
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import os
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import sys
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import shutil
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import platform
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def select():
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"""Automatically select a suitable printer class"""
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if hasattr(sys.stdout, "isatty") and sys.stdout.isatty():
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return ColorPrinter if ANSI else TerminalPrinter
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else:
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return Printer
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class Printer():
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@staticmethod
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def start(path):
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"""Print a message indicating the start of a download"""
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pass
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@staticmethod
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def skip(path):
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"""Print a message indicating that a download has been skipped"""
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print(CHAR_SKIP, path, sep="", flush=True)
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@staticmethod
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def success(path, tries):
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"""Print a message indicating the completion of a download"""
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print(path, flush=True)
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@staticmethod
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def error(file, error, tries, max_tries):
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"""Print a message indicating an error during download"""
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pass
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class TerminalPrinter():
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@staticmethod
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def start(path):
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"""Print a message indicating the start of a download"""
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_safeprint(_shorten(" " + path), end="", flush=True)
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@staticmethod
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def skip(path):
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"""Print a message indicating that a download has been skipped"""
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_safeprint(_shorten(CHAR_SKIP + path))
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@staticmethod
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def success(path, tries):
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"""Print a message indicating the completion of a download"""
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print("\r", end="")
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_safeprint(_shorten(CHAR_SUCCESS + path))
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@staticmethod
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def error(file, error, tries, max_tries):
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"""Print a message indicating an error during download"""
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if tries <= 1 and hasattr(file, "name"):
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print("\r", end="")
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_safeprint(_shorten(CHAR_ERROR + file.name))
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print("[Error] ", end="")
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_safeprint(error, end="")
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print(" (", tries, "/", max_tries, ")", sep="")
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class ColorPrinter():
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@staticmethod
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def start(path):
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"""Print a message indicating the start of a download"""
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print(_shorten(path), end="", flush=True)
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@staticmethod
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def skip(path):
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"""Print a message indicating that a download has been skipped"""
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print("\033[2m", _shorten(path), "\033[0m", sep="")
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@staticmethod
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def success(path, tries):
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"""Print a message indicating the completion of a download"""
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if tries == 0:
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print("\r", end="")
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print("\r\033[1;32m", _shorten(path), "\033[0m", sep="")
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@staticmethod
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def error(file, error, tries, max_tries):
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"""Print a message indicating an error during download"""
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if tries <= 1 and hasattr(file, "name"):
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print("\r\033[1;31m", _shorten(file.name), sep="")
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print("\033[0;31m[Error]\033[0m ", error, " (", tries, "/", max_tries, ")", sep="")
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def _shorten(txt):
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"""Reduce the length of 'txt' to the width of the terminal"""
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width = shutil.get_terminal_size().columns - OFFSET
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if len(txt) > width:
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hwidth = width // 2 - OFFSET
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return "".join((txt[:hwidth-1], CHAR_ELLIPSIES, txt[-hwidth-(width%2):]))
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return txt
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def _safeprint(txt, **kwargs):
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"""Handle unicode errors and replace invalid characters"""
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try:
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print(txt, **kwargs)
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except UnicodeEncodeError:
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enc = sys.stdout.encoding
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txt = txt.encode(enc, errors="replace").decode(enc)
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print(txt, **kwargs)
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if platform.system() == "Windows":
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ANSI = os.environ.get("TERM") == "ANSI"
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OFFSET = 1
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CHAR_SKIP = "#"
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CHAR_ERROR = "!"
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CHAR_SUCCESS = "*"
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CHAR_ELLIPSIES = "..."
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else:
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ANSI = True
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OFFSET = 0
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CHAR_SKIP = "#"
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CHAR_ERROR = "❌"
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CHAR_SUCCESS = "✔"
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CHAR_ELLIPSIES = "…"
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