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136 lines
3.8 KiB
136 lines
3.8 KiB
# -*- coding: utf-8 -*-
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# Copyright 2015, 2016 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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from . import config
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def select():
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"""Automatically select a suitable printer class"""
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pdict = {
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"default": Printer,
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"pipe": Printer,
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"term": TerminalPrinter,
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"terminal": TerminalPrinter,
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"color": ColorPrinter,
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}
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omode = config.get(("output", "mode"), "auto").lower()
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if omode in pdict:
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return pdict[omode]()
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elif omode == "auto":
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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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else:
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raise Exception("invalid output mode: " + omode)
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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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class Printer():
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def start(self, path):
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"""Print a message indicating the start of a download"""
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pass
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def skip(self, 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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def success(self, 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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def error(self, 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(Printer):
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def __init__(self):
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self.short = config.get(("output", "shorten"), True)
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if self.short:
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self.width = shutil.get_terminal_size().columns - OFFSET
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def start(self, path):
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safeprint(self.shorten(" " + path), end="", flush=True)
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def skip(self, path):
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safeprint(self.shorten(CHAR_SKIP + path))
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def success(self, path, tries):
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print("\r", end="")
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safeprint(self.shorten(CHAR_SUCCESS + path))
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def error(self, file, error, tries, max_tries):
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if tries <= 1 and hasattr(file, "name"):
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print("\r", end="")
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safeprint(self.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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def shorten(self, txt):
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"""Reduce the length of 'txt' to the width of the terminal"""
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if self.short and len(txt) > self.width:
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hwidth = self.width // 2 - OFFSET
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return "".join((
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txt[:hwidth-1],
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CHAR_ELLIPSIES,
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txt[-hwidth-(self.width % 2):]
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))
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return txt
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class ColorPrinter(TerminalPrinter):
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def start(self, path):
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print(self.shorten(path), end="", flush=True)
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def skip(self, path):
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print("\033[2m", self.shorten(path), "\033[0m", sep="")
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def success(self, path, tries):
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# if tries == 0:
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# print("\r", end="")
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print("\r\033[1;32m", self.shorten(path), "\033[0m", sep="")
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def error(self, file, error, tries, max_tries):
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if tries <= 1 and hasattr(file, "name"):
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print("\r\033[1;31m", self.shorten(file.name), sep="")
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print("\033[0;31m[Error]\033[0m ", error,
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" (", tries, "/", max_tries, ")", sep="")
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if os.name == "nt":
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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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