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#-*- coding: utf-8 -*-
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# Copyright 2014 Calculate Ltd. http://www.calculate-linux.org
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from output import BaseOutput
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from palette import (TextState, BaseColorMapping, ConsoleCodesInfo,
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LightColorMapping, ConsoleColor256, XmlFormat)
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from calculate.lib.utils.tools import SavableIterator, ignore
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from itertools import ifilter
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from HTMLParser import HTMLParser
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import re
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class BaseConverter(object):
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"""
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Базовый класс обработки (ничего не конвертирует - возвращает как есть)
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"""
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def __init__(self, output=BaseOutput()):
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self.output = output
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def transform(self, s):
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return self.output.outputText(s)
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def detect(self, s):
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return True
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class ConsoleCodesConverter(BaseConverter):
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"""Преобразователь текста из цветного консольного вывода через объект
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форматирования.
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Объект форматирования должен реализовывать BaseOutput
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>>> cct = ConsoleCodesConverter(BaseOutput())
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>>> outtext = "\033[32;1mHello\033[0;39m"
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>>> cct.transform(outtext)
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'Hello'
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>>> from output import SpanCssOutput
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>>> cct = ConsoleCodesConverter(SpanCssOutput())
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>>> outtext = "\033[32;1mHello\033[0;39m"
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>>> cct.transform(outtext)
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'<span style="color:Green;font-weight:bold;">Hello</span>'
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"""
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class CodeElement:
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"""Элемент кода в ESC последовательности"""
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def __init__(self, condition=lambda code: False, action=lambda: None):
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self.action = action
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self.condition = condition
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def tryParse(self, code):
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"""Обрабатывает ли экземпляр код"""
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return self.condition(code)
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def parse(self, code, codes):
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"""Обработать код, вызвать действие"""
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return self.action()
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def _next_code(self, other):
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"""
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Получить следующий код
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"""
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try:
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return int(other.next())
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except StopIteration:
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return None
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class ColorElement:
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"""Элемент кода для указания стандартного цвета
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Проверка кода в интервале, запуск действия с передачей цвета
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"""
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# соответствие консольных цветов внутренним цветам
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mapColors = BaseColorMapping.mapConsole_TS
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def __init__(self, action=lambda x: None, begin=None, end=None):
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self.action = action
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self.begin = begin
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self.end = end
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def tryParse(self, code):
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return code >= self.begin and code <= self.end
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def parse(self, code, codes):
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return self.action(self.mapColors.get(code - self.begin,
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TextState.Colors.DEFAULT))
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def __init__(self, output=None, escSymb="\033"):
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self.output = output or BaseOutput()
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self.escSymb = escSymb
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self.escBlock = (r"{esc}(?:\[(\d+(?:;\d+)*)m|"
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"\]\d+;.*?\x07|\[\d*[A-D])".format(esc=escSymb))
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self.otherSymb = "(?:\r*\n|\t)"
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self.reEscBlock = re.compile(self.escBlock)
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self.reParse = re.compile(
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"(?:{0}|({1}))?(.*?)(?=$|{0}|{1})".format(self.escBlock,
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self.otherSymb),
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re.DOTALL)
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resetBoldHalfbright = lambda: (
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(self.output.resetBold() or "") +
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(self.output.resetHalfbright() or ""))
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cci = ConsoleCodesInfo
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element = self.CodeElement
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# набор правил обработки кодов
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reset = element(lambda code: code == cci.RESET, self.output.reset)
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bold = element(lambda code: code == cci.BOLD, self.output.setBold)
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halfbright = element(lambda code: code == cci.HALFBRIGHT,
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self.output.setHalfbright)
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underline = element(lambda code: code == cci.UNDERLINE,
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self.output.setUnderline)
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nounderline = element(lambda code: code == cci.NOUNDERLINE,
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self.output.resetUnderline)
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invert = element(lambda code: code == cci.INVERT,
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self.output.setInvert)
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noinvert = element(lambda code: code == cci.NOINVERT,
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self.output.resetInvert)
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normal = element(lambda code: code == cci.NORMAL,
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resetBoldHalfbright)
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reset_foreground = element(lambda code: code == cci.FOREGROUND_DEFAULT,
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self.output.resetForeground)
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reset_background = element(lambda code: code == cci.BACKGROUND_DEFAULT,
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self.output.resetBackground)
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foreground = self.ColorElement(begin=cci.FOREGROUND,
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end=cci.FOREGROUND_END,
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action=self.output.setForeground)
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background = self.ColorElement(begin=cci.BACKGROUND,
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end=cci.BACKGROUND_END,
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action=self.output.setBackground)
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newline = element(lambda code: "\r" in code or "\n" in code,
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self.output.newLine)
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tab = element(lambda code: "\t" in code, self.output.tab)
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self.grams = [reset, bold, halfbright, underline, nounderline, normal,
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invert, noinvert, reset_foreground, reset_background,
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foreground, background, tab, newline]
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def evaluteGram(self, code, codes=None):
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"""Выполнить грамматику"""
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if codes is None:
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codes = SavableIterator([])
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for gram in ifilter(lambda x: x.tryParse(code),
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self.grams):
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return gram.parse(code, codes)
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def transform(self, s):
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"""
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Запустить преобразование текста
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"""
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def generator():
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for ctrl, other, txt, _s in self.reParse.findall(s):
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if ctrl:
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codes = SavableIterator(ctrl.split(';'))
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for code in codes:
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code = int(code)
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res = self.evaluteGram(code, codes)
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if res:
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yield res
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elif other:
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res = self.evaluteGram(other)
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if res:
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yield res
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if txt:
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yield self.output.outputText(txt)
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yield self.output.endText()
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return "".join(list(filter(None, generator())))
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def detect(self, s):
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"""
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Определить есть ли в тексте управляющие последовательности
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"""
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return bool(self.reEscBlock.search(s))
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class ConsoleCodes256Converter(ConsoleCodesConverter):
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"""Расширяет возможность обработки 256 цветного терминала"""
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class Color256Element(ConsoleCodesConverter.CodeElement):
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def __init__(self, action=lambda x: None, begin=None):
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self.action = action
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self.begin = begin
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def tryParse(self, code):
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return code == self.begin
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def parse(self, code, codes):
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"""
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Тон: 38;5;0-255
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Фон: 48;5;0-255
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"""
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colorMap = LightColorMapping(BaseColorMapping).mapConsole_TS
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codes.save()
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if self._next_code(codes) == ConsoleCodesInfo.COLOR256:
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code = self._next_code(codes)
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if code is not None:
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if code in colorMap:
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self.action(colorMap[code])
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else:
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self.action(ConsoleColor256.consoleToRgb(code))
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else:
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# если после 38 не 5 - не обрабатываем этот код
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codes.restore()
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def __init__(self, *args, **kwargs):
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ConsoleCodesConverter.__init__(self, *args, **kwargs)
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cci = ConsoleCodesInfo
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# обработчики кодов для вывода в 256
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foreground256 = self.Color256Element(begin=cci.FOREGROUND256,
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action=self.output.setForeground)
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background256 = self.Color256Element(begin=cci.BACKGROUND256,
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action=self.output.setBackground)
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self.grams.insert(0, foreground256)
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self.grams.insert(0, background256)
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class XmlConverter(BaseConverter):
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"""
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Преобразователь текста из внутреннего xml формата
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"""
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unescaper = XmlFormat.unescaper
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def __init__(self, output=None):
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Tags = XmlFormat.Tags
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FontAttr = XmlFormat.FontAttributes
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self.output = output or BaseOutput()
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self.tagMap = {
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Tags.BOLD: self.output.setBold,
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Tags.HALFBRIGHT: self.output.setHalfbright,
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Tags.INVERT: self.output.setInvert,
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Tags.UNDERLINE: self.output.setUnderline,
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Tags.FONT: self.parseFont
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}
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self.singletagMap = {
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Tags.NEWLINE: self.output.newLine,
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Tags.TAB: self.output.tab
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}
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self.colorMap = {FontAttr.FOREGROUND.lower(): self.output.setForeground,
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FontAttr.BACKGROUND.lower(): self.output.setBackground}
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self.reMatch = re.compile("<(?:%s)" % "|".join(self.tagMap.keys()),
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re.I)
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self.parser = self.createParser()
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def createParser(self):
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"""
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Создать парсер HTML кода
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"""
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parser = HTMLParser()
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parser.handle_starttag = self.startElementHandler
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parser.handle_endtag = self.endElementHandler
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parser.handle_data = self.characterDataHandler
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parser.handle_startendtag = self.startendElementHandler
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parser.handle_entityref = self.entityrefElementHandler
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return parser
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def parseFont(self, *attrs):
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for k, v in attrs:
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k = str(k).lower()
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if k in self.colorMap:
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self.colorMap[k](str(v))
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def transform(self, s):
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self.__outdata = []
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self.__tagStack = []
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self.parser.feed(s)
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self.__outdata.append(self.output.endText())
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return "".join(list(filter(None, self.__outdata)))
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def addResultToOutdata(f):
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"""Добавить возвращаемый результат в список self.__outdata"""
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def wrapper(self, *args):
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res = f(self, *args)
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if res:
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self.__outdata.append(res)
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return res
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return wrapper
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def _buildTaq(self, name, attrs=[], startendTag=False, endTag=False):
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"""
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Создать тэг по параметрам
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"""
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lslash, rslash = '', ''
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if startendTag:
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rslash = '/'
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elif endTag:
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lslash = '/'
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if attrs:
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return "<{name} {attrs}{rslash}>".format(
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name=name, attrs=" ".join(['%s="%s"' % (k, v)
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for k, v in attrs]),
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rslash=rslash)
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else:
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return "<{lslash}{name}{rslash}>".format(lslash=lslash, name=name,
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rslash=rslash)
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@addResultToOutdata
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def startElementHandler(self, name, attrs):
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"""Обработчик начального тега"""
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if name in self.tagMap:
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self.output.pushState()
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self.__tagStack.append(name)
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with ignore(TypeError):
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return self.tagMap[name](*attrs)
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else:
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return self.output.outputText(self._buildTaq(name, attrs))
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@addResultToOutdata
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def startendElementHandler(self, name, attrs):
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"""Обработчик одиночного тега"""
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if name in self.singletagMap:
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with ignore(TypeError):
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return self.singletagMap[name](*attrs)
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else:
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return self.output.outputText(
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self._buildTaq(name, attrs, startendTag=True))
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@addResultToOutdata
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def endElementHandler(self, name):
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"""Обработчик завершающего тега"""
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if name in self.tagMap:
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if name in self.__tagStack:
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while self.__tagStack and self.__tagStack.pop() != name:
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self.output.popState()
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self.output.popState()
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else:
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return self.output.outputText(self._buildTaq(name, endTag=True))
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@addResultToOutdata
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def characterDataHandler(self, data):
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"""Обработчик текста в тэгах"""
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return self.output.outputText(self.unescaper(data))
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@addResultToOutdata
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def entityrefElementHandler(self, data):
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return self.output.outputText(self.unescaper("&%s;" % data))
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def detect(self, s):
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return bool(self.reMatch.search(s))
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addResultToOutdata = staticmethod(addResultToOutdata)
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