264 lines
8.7 KiB
Python
264 lines
8.7 KiB
Python
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# ----------------------------------------------------------------------------
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# pyglet
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# Copyright (c) 2006-2008 Alex Holkner
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# Copyright (c) 2008-2021 pyglet contributors
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in
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# the documentation and/or other materials provided with the
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# distribution.
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# * Neither the name of pyglet nor the names of its
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# contributors may be used to endorse or promote products
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# derived from this software without specific prior written
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# permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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# ----------------------------------------------------------------------------
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"""Base class for structured (hierarchical) document formats.
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"""
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import re
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import pyglet
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class ImageElement(pyglet.text.document.InlineElement):
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def __init__(self, image, width=None, height=None):
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self.image = image.get_texture()
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self.width = width is None and image.width or width
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self.height = height is None and image.height or height
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self.vertex_lists = {}
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anchor_y = self.height // image.height * image.anchor_y
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ascent = max(0, self.height - anchor_y)
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descent = min(0, -anchor_y)
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super(ImageElement, self).__init__(ascent, descent, self.width)
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def place(self, layout, x, y):
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group = pyglet.graphics.TextureGroup(self.image.get_texture(), layout.top_group)
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x1 = x
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y1 = y + self.descent
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x2 = x + self.width
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y2 = y + self.height + self.descent
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vertex_list = layout.batch.add(4, pyglet.gl.GL_QUADS, group,
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('v2i', (x1, y1, x2, y1, x2, y2, x1, y2)),
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('c3B', (255, 255, 255) * 4),
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('t3f', self.image.tex_coords))
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self.vertex_lists[layout] = vertex_list
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def remove(self, layout):
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self.vertex_lists[layout].delete()
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del self.vertex_lists[layout]
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def _int_to_roman(input):
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# From http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/81611
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if not 0 < input < 4000:
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raise ValueError("Argument must be between 1 and 3999")
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ints = (1000, 900, 500, 400, 100, 90, 50, 40, 10, 9, 5, 4, 1)
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nums = ('M', 'CM', 'D', 'CD','C', 'XC','L','XL','X','IX','V','IV','I')
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result = ""
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for i in range(len(ints)):
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count = int(input // ints[i])
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result += nums[i] * count
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input -= ints[i] * count
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return result
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class ListBuilder:
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def begin(self, decoder, style):
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"""Begin a list.
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:Parameters:
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`decoder` : `StructuredTextDecoder`
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Decoder.
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`style` : dict
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Style dictionary that applies over the entire list.
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"""
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left_margin = decoder.current_style.get('margin_left') or 0
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tab_stops = decoder.current_style.get('tab_stops')
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if tab_stops:
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tab_stops = list(tab_stops)
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else:
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tab_stops = []
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tab_stops.append(left_margin + 50)
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style['margin_left'] = left_margin + 50
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style['indent'] = -30
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style['tab_stops'] = tab_stops
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def item(self, decoder, style, value=None):
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"""Begin a list item.
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:Parameters:
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`decoder` : `StructuredTextDecoder`
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Decoder.
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`style` : dict
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Style dictionary that applies over the list item.
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`value` : str
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Optional value of the list item. The meaning is list-type
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dependent.
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"""
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mark = self.get_mark(value)
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if mark:
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decoder.add_text(mark)
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decoder.add_text('\t')
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def get_mark(self, value=None):
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"""Get the mark text for the next list item.
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:Parameters:
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`value` : str
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Optional value of the list item. The meaning is list-type
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dependent.
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:rtype: str
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"""
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return ''
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class UnorderedListBuilder(ListBuilder):
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def __init__(self, mark):
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"""Create an unordered list with constant mark text.
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:Parameters:
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`mark` : str
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Mark to prepend to each list item.
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"""
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self.mark = mark
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def get_mark(self, value):
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return self.mark
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class OrderedListBuilder(ListBuilder):
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format_re = re.compile('(.*?)([1aAiI])(.*)')
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def __init__(self, start, format):
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"""Create an ordered list with sequentially numbered mark text.
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The format is composed of an optional prefix text, a numbering
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scheme character followed by suffix text. Valid numbering schemes
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are:
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``1``
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Decimal Arabic
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``a``
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Lowercase alphanumeric
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``A``
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Uppercase alphanumeric
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``i``
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Lowercase Roman
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``I``
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Uppercase Roman
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Prefix text may typically be ``(`` or ``[`` and suffix text is
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typically ``.``, ``)`` or empty, but either can be any string.
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:Parameters:
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`start` : int
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First list item number.
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`format` : str
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Format style, for example ``"1."``.
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"""
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self.next_value = start
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self.prefix, self.numbering, self.suffix = self.format_re.match(format).groups()
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assert self.numbering in '1aAiI'
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def get_mark(self, value):
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if value is None:
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value = self.next_value
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self.next_value = value + 1
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if self.numbering in 'aA':
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try:
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mark = 'abcdefghijklmnopqrstuvwxyz'[value - 1]
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except ValueError:
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mark = '?'
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if self.numbering == 'A':
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mark = mark.upper()
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return '%s%s%s' % (self.prefix, mark, self.suffix)
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elif self.numbering in 'iI':
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try:
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mark = _int_to_roman(value)
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except ValueError:
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mark = '?'
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if self.numbering == 'i':
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mark = mark.lower()
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return '%s%s%s' % (self.prefix, mark, self.suffix)
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else:
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return '%s%d%s' % (self.prefix, value, self.suffix)
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class StructuredTextDecoder(pyglet.text.DocumentDecoder):
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def decode(self, text, location=None):
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self.len_text = 0
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self.current_style = {}
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self.next_style = {}
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self.stack = []
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self.list_stack = []
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self.document = pyglet.text.document.FormattedDocument()
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if location is None:
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location = pyglet.resource.FileLocation('')
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self.decode_structured(text, location)
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return self.document
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def decode_structured(self, text, location):
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raise NotImplementedError('abstract')
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def push_style(self, key, styles):
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old_styles = {}
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for name in styles.keys():
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old_styles[name] = self.current_style.get(name)
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self.stack.append((key, old_styles))
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self.current_style.update(styles)
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self.next_style.update(styles)
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def pop_style(self, key):
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# Don't do anything if key is not in stack
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for match, _ in self.stack:
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if key == match:
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break
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else:
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return
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# Remove all innermost elements until key is closed.
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while True:
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match, old_styles = self.stack.pop()
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self.next_style.update(old_styles)
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self.current_style.update(old_styles)
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if match == key:
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break
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def add_text(self, text):
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self.document.insert_text(self.len_text, text, self.next_style)
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self.next_style.clear()
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self.len_text += len(text)
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def add_element(self, element):
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self.document.insert_element(self.len_text, element, self.next_style)
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self.next_style.clear()
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self.len_text += 1
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