Veronica K. B. Olsen
659 lines
24 KiB
Python
659 lines
24 KiB
Python
# -*- coding: utf-8 -*-
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"""
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novelWriter – Text Tokenizer
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============================
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Splits a piece of novelWriter markdown text into its elements
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File History:
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Created: 2019-05-05 [0.0.1]
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This file is a part of novelWriter
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Copyright 2018–2021, Veronica Berglyd Olsen
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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 as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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"""
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import logging
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import re
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from operator import itemgetter
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from PyQt5.QtCore import QRegularExpression
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from nw.core.document import NWDoc
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from nw.core.tools import numberToWord, numberToRoman
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from nw.constants import nwConst, nwItemLayout, nwItemType, nwRegEx
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logger = logging.getLogger(__name__)
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class Tokenizer():
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# In-Text Format
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FMT_B_B = 1 # Begin bold
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FMT_B_E = 2 # End bold
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FMT_I_B = 3 # Begin italics
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FMT_I_E = 4 # End italics
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FMT_D_B = 5 # Begin strikeout
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FMT_D_E = 6 # End strikeout
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# Block Type
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T_EMPTY = 1 # Empty line (new paragraph)
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T_SYNOPSIS = 2 # Synopsis comment
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T_COMMENT = 3 # Comment line
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T_KEYWORD = 4 # Command line
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T_TITLE = 5 # Title
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T_HEAD1 = 6 # Header 1
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T_HEAD2 = 7 # Header 2
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T_HEAD3 = 8 # Header 3
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T_HEAD4 = 9 # Header 4
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T_TEXT = 10 # Text line
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T_SEP = 11 # Scene separator
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T_SKIP = 12 # Paragraph break
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# Block Style
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A_NONE = 0x0000 # No special style
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A_LEFT = 0x0001 # Left aligned
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A_RIGHT = 0x0002 # Right aligned
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A_CENTRE = 0x0004 # Centred
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A_JUSTIFY = 0x0008 # Justified
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A_PBB = 0x0010 # Page break before always
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A_PBB_AUT = 0x0020 # Page break before auto
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A_PBA = 0x0040 # Page break after always
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A_PBA_AUT = 0x0080 # Page break after auto
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A_Z_TOPMRG = 0x0100 # Zero top margin
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A_Z_BTMMRG = 0x0200 # Zero bottom margin
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def __init__(self, theProject, theParent):
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self.theProject = theProject
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self.theParent = theParent
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# Data Variables
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self.theText = "" # The raw text to be tokenized
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self.theHandle = None # The handle associated with the text
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self.theItem = None # The NWItem associated with the handle
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self.theTokens = [] # The list of the processed tokens
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self.theResult = "" # The result of the last document
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self.keepMarkdown = False # Whether to keep the markdown text
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self.theMarkdown = [] # The result novelWriter markdown of all documents
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# User Settings
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self.textFont = "Serif" # Output text font
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self.textSize = 11 # Output text size
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self.textFixed = False # Fixed width text
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self.lineHeight = 1.15 # Line height
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self.doJustify = False # Justify text
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self.doBodyText = True # Include body text
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self.doSynopsis = False # Also process synopsis comments
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self.doComments = False # Also process comments
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self.doKeywords = False # Also process keywords like tags and references
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## Title Margins
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self.marginTitle = (1.000, 0.500)
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self.marginHead1 = (1.000, 0.500)
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self.marginHead2 = (0.834, 0.500)
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self.marginHead3 = (0.584, 0.500)
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self.marginHead4 = (0.584, 0.500)
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self.marginText = (0.000, 0.584)
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self.marginMeta = (0.000, 0.584)
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## Title Formats
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self.fmtTitle = "%title%" # Formatting for titles
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self.fmtChapter = "%title%" # Formatting for numbered chapters
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self.fmtUnNum = "%title%" # Formatting for unnumbered chapters
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self.fmtScene = "%title%" # Formatting for scenes
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self.fmtSection = "%title%" # Formatting for sections
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self.hideScene = False # Do not include scene headers
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self.hideSection = False # Do not include section headers
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self.linkHeaders = False # Add an anchor before headers
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# Instance Variables
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self.numChapter = 0 # Counter for chapter numbers
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self.numChScene = 0 # Counter for scene number within chapter
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self.numAbsScene = 0 # Counter for scene number within novel
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self.firstScene = False # Flag to indicate that the first scene of the chapter
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# This File
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self.isNone = False
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self.isTitle = False
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self.isBook = False
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self.isPage = False
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self.isPart = False
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self.isUnNum = False
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self.isChap = False
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self.isScene = False
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self.isNote = False
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self.isNovel = False
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# Error Handling
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self.errData = []
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return
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##
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# Setters
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##
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def setTitleFormat(self, fmtTitle):
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self.fmtTitle = fmtTitle
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return
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def setChapterFormat(self, fmtChapter):
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self.fmtChapter = fmtChapter
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return
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def setUnNumberedFormat(self, fmtUnNum):
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self.fmtUnNum = fmtUnNum
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return
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def setSceneFormat(self, fmtScene, hideScene):
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self.fmtScene = fmtScene
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self.hideScene = hideScene
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return
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def setSectionFormat(self, fmtSection, hideSection):
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self.fmtSection = fmtSection
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self.hideSection = hideSection
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return
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def setFont(self, textFont, textSize, textFixed=False):
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self.textFont = textFont
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self.textSize = round(int(textSize))
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self.textFixed = textFixed
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return
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def setLineHeight(self, lineHeight):
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self.lineHeight = float(lineHeight)
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return
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def setJustify(self, doJustify):
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self.doJustify = doJustify
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return
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def setTitleMargins(self, mUpper, mLower):
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self.marginTitle = (float(mUpper), float(mLower))
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return
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def setHead1Margins(self, mUpper, mLower):
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self.marginHead1 = (float(mUpper), float(mLower))
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return
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def setHead2Margins(self, mUpper, mLower):
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self.marginHead2 = (float(mUpper), float(mLower))
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return
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def setHead3Margins(self, mUpper, mLower):
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self.marginHead3 = (float(mUpper), float(mLower))
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return
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def setHead4Margins(self, mUpper, mLower):
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self.marginHead4 = (float(mUpper), float(mLower))
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return
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def setTextMargins(self, mUpper, mLower):
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self.marginText = (float(mUpper), float(mLower))
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return
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def setMetaMargins(self, mUpper, mLower):
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self.marginMeta = (float(mUpper), float(mLower))
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return
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def setLinkHeaders(self, linkHeaders):
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self.linkHeaders = linkHeaders
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return
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def setBodyText(self, doBodyText):
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self.doBodyText = doBodyText
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return
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def setSynopsis(self, doSynopsis):
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self.doSynopsis = doSynopsis
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return
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def setComments(self, doComments):
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self.doComments = doComments
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return
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def setKeywords(self, doKeywords):
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self.doKeywords = doKeywords
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return
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def setKeepMarkdown(self, keepMarkdown):
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self.keepMarkdown = keepMarkdown
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return
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##
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# Class Methods
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##
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def addRootHeading(self, theHandle):
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"""Add a heading at the start of a new root folder.
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"""
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theItem = self.theProject.projTree[theHandle]
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if theItem is None:
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return False
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if theItem.itemType != nwItemType.ROOT:
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return False
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theTitle = "Notes: %s" % theItem.itemName
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self.theTokens = []
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self.theTokens.append((
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self.T_TITLE, 0, theTitle, None, self.A_PBB | self.A_CENTRE
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))
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if self.keepMarkdown:
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self.theMarkdown.append("# %s\n\n" % theTitle)
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return True
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def setText(self, theHandle, theText=None):
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"""Set the text for the tokenizer from a handle. If theText is
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not set, load it from the file.
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"""
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self.theHandle = theHandle
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self.theItem = self.theProject.projTree[theHandle]
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if self.theItem is None:
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return False
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if theText is not None:
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# If the text is set, just use that
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self.theText = theText
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else:
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# Otherwise, load it from file
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theDocument = NWDoc(self.theProject, self.theParent)
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self.theText = theDocument.openDocument(theHandle)
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docSize = len(self.theText)
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if docSize > nwConst.MAX_DOCSIZE:
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errVal = "Document '%s' is too big (%.2f MB). Skipping." % (
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self.theItem.itemName, docSize/1.0e6
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)
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self.theText = "# ERROR\n\n%s\n\n" % errVal
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self.errData.append(errVal)
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self.isNone = self.theItem.itemLayout == nwItemLayout.NO_LAYOUT
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self.isTitle = self.theItem.itemLayout == nwItemLayout.TITLE
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self.isBook = self.theItem.itemLayout == nwItemLayout.BOOK
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self.isPage = self.theItem.itemLayout == nwItemLayout.PAGE
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self.isPart = self.theItem.itemLayout == nwItemLayout.PARTITION
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self.isUnNum = self.theItem.itemLayout == nwItemLayout.UNNUMBERED
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self.isChap = self.theItem.itemLayout == nwItemLayout.CHAPTER
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self.isScene = self.theItem.itemLayout == nwItemLayout.SCENE
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self.isNote = self.theItem.itemLayout == nwItemLayout.NOTE
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self.isNovel = self.isBook or self.isUnNum or self.isChap or self.isScene
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return True
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def doAutoReplace(self):
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"""Run through the user's auto-replace dictionary.
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"""
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if len(self.theProject.autoReplace) > 0:
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repDict = {}
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for aKey, aVal in self.theProject.autoReplace.items():
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repDict["<%s>" % aKey] = aVal
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xRep = re.compile("|".join([re.escape(k) for k in repDict.keys()]), flags=re.DOTALL)
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self.theText = xRep.sub(lambda x: repDict[x.group(0)], self.theText)
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return
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def doPostProcessing(self):
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"""Do some postprocessing. Overloaded by subclasses. This just
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does the standard escaped characters.
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"""
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escapeDict = {
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r"\*" : "*",
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r"\~" : "~",
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r"\_" : "_",
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}
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escReplace = re.compile(
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"|".join([re.escape(k) for k in escapeDict.keys()]), flags=re.DOTALL
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)
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self.theResult = escReplace.sub(
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lambda x: escapeDict[x.group(0)], self.theResult
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)
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return
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def tokenizeText(self):
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"""Scan the text for either lines starting with specific
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characters that indicate headers, comments, commands etc, or
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just contains plain text. in the case of plain text, apply the
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same RegExes that the syntax highlighter uses and save the
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locations of these formatting tags into the token array.
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The format of the token list is an entry with a four-tuple for
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each line in the file. The tuple is as follows:
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1: The type of the block, self.T_*
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2: The line in file where this block occurred
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3: The text content of the block, without leading tags
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4: The internal formatting map of the text, self.FMT_*
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5: The style of the block, self.A_*
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"""
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# RegExes for adding formatting tags within text lines
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rxFormats = [
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(QRegularExpression(nwRegEx.FMT_EI), [None, self.FMT_I_B, None, self.FMT_I_E]),
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(QRegularExpression(nwRegEx.FMT_EB), [None, self.FMT_B_B, None, self.FMT_B_E]),
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(QRegularExpression(nwRegEx.FMT_ST), [None, self.FMT_D_B, None, self.FMT_D_E]),
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]
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self.theTokens = []
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tmpMarkdown = []
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nLine = 0
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for aLine in self.theText.splitlines():
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nLine += 1
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# Tag lines starting with specific characters
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if len(aLine.strip()) == 0:
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self.theTokens.append((
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self.T_EMPTY, nLine, "", None, self.A_NONE
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))
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if self.keepMarkdown:
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tmpMarkdown.append("\n")
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elif aLine[0] == "%":
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cLine = aLine[1:].lstrip()
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synTag = cLine[:9].lower()
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if synTag == "synopsis:":
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self.theTokens.append((
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self.T_SYNOPSIS, nLine, cLine[9:].strip(), None, self.A_NONE
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))
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if self.doSynopsis and self.keepMarkdown:
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tmpMarkdown.append("%s\n" % aLine)
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else:
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self.theTokens.append((
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self.T_COMMENT, nLine, aLine[1:].strip(), None, self.A_NONE
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))
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if self.doComments and self.keepMarkdown:
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tmpMarkdown.append("%s\n" % aLine)
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elif aLine[0] == "@":
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self.theTokens.append((
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self.T_KEYWORD, nLine, aLine[1:].strip(), None, self.A_NONE
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))
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if self.doKeywords and self.keepMarkdown:
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tmpMarkdown.append("%s\n" % aLine)
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elif aLine[:2] == "# ":
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self.theTokens.append((
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self.T_HEAD1, nLine, aLine[2:].strip(), None, self.A_NONE
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))
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if self.keepMarkdown:
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tmpMarkdown.append("%s\n" % aLine)
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elif aLine[:3] == "## ":
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self.theTokens.append((
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self.T_HEAD2, nLine, aLine[3:].strip(), None, self.A_NONE
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))
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if self.keepMarkdown:
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tmpMarkdown.append("%s\n" % aLine)
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elif aLine[:4] == "### ":
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self.theTokens.append((
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self.T_HEAD3, nLine, aLine[4:].strip(), None, self.A_NONE
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))
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if self.keepMarkdown:
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tmpMarkdown.append("%s\n" % aLine)
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elif aLine[:5] == "#### ":
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self.theTokens.append((
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self.T_HEAD4, nLine, aLine[5:].strip(), None, self.A_NONE
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))
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if self.keepMarkdown:
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tmpMarkdown.append("%s\n" % aLine)
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else:
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if not self.doBodyText:
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# Skip all body text
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continue
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# Otherwise we use RegEx to find formatting tags within a line of text
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fmtPos = []
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for theRX, theKeys in rxFormats:
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rxThis = theRX.globalMatch(aLine, 0)
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while rxThis.hasNext():
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rxMatch = rxThis.next()
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for n in range(1, len(theKeys)):
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if theKeys[n] is not None:
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xPos = rxMatch.capturedStart(n)
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xLen = rxMatch.capturedLength(n)
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fmtPos.append([xPos, xLen, theKeys[n]])
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# Save the line as is, but append the array of formatting locations
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# sorted by position
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fmtPos = sorted(fmtPos, key=itemgetter(0))
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self.theTokens.append((
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self.T_TEXT, nLine, aLine, fmtPos, self.A_NONE
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))
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if self.keepMarkdown:
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tmpMarkdown.append("%s\n" % aLine)
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# Always add an empty line at the end
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self.theTokens.append((
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self.T_EMPTY, nLine, "", None, self.A_NONE
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))
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if self.keepMarkdown:
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tmpMarkdown.append("\n")
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if self.keepMarkdown:
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self.theMarkdown.append("".join(tmpMarkdown))
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# Second Pass
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# ===========
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# Some items need a second pass
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pToken = (self.T_EMPTY, 0, "", None, self.A_NONE)
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nToken = (self.T_EMPTY, 0, "", None, self.A_NONE)
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tCount = len(self.theTokens)
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for n, tToken in enumerate(self.theTokens):
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if n > 0:
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pToken = self.theTokens[n-1]
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if n < tCount - 1:
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nToken = self.theTokens[n+1]
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if tToken[0] == self.T_KEYWORD:
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aStyle = tToken[4]
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if pToken[0] == self.T_KEYWORD:
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aStyle |= self.A_Z_TOPMRG
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if nToken[0] == self.T_KEYWORD:
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aStyle |= self.A_Z_BTMMRG
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self.theTokens[n] = (
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tToken[0], tToken[1], tToken[2], tToken[3], aStyle
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)
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return
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def doHeaders(self):
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"""Apply formatting to the text headers according to document
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layout and user settings.
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"""
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# No special header formatting for notes and no-layout files
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if self.isNone or self.isNote:
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return False
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# For novel files, we need to handle chapter numbering, scene
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# numbering, and scene breaks
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if self.isNovel:
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for n, tToken in enumerate(self.theTokens):
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# In case we see text before a scene, we reset the flag
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if tToken[0] == self.T_TEXT:
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self.firstScene = False
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elif tToken[0] == self.T_HEAD1:
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# Main Title
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# ==========
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tTemp = self._formatHeading(self.fmtTitle, tToken[2])
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self.theTokens[n] = (
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tToken[0], tToken[1], tTemp, None, self.A_NONE
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)
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elif tToken[0] == self.T_HEAD2:
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# Novel Chapter
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# =============
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# Numbered or Unnumbered
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if self.isUnNum:
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tTemp = self._formatHeading(self.fmtUnNum, tToken[2])
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||
elif tToken[2].startswith("*"):
|
||
tTemp = self._formatHeading(self.fmtUnNum, tToken[2][1:].lstrip())
|
||
else:
|
||
self.numChapter += 1
|
||
tTemp = self._formatHeading(self.fmtChapter, tToken[2])
|
||
|
||
# Format the chapter header
|
||
self.theTokens[n] = (
|
||
tToken[0], tToken[1], tTemp, None, self.A_PBB
|
||
)
|
||
|
||
# Set scene variables
|
||
self.firstScene = True
|
||
self.numChScene = 0
|
||
|
||
elif tToken[0] == self.T_HEAD3:
|
||
# Novel Scene
|
||
# ===========
|
||
|
||
self.numChScene += 1
|
||
self.numAbsScene += 1
|
||
|
||
tTemp = self._formatHeading(self.fmtScene, tToken[2])
|
||
if tTemp == "" and self.hideScene:
|
||
self.theTokens[n] = (
|
||
self.T_EMPTY, tToken[1], "", None, self.A_NONE
|
||
)
|
||
elif tTemp == "" and not self.hideScene:
|
||
if self.firstScene:
|
||
self.theTokens[n] = (
|
||
self.T_EMPTY, tToken[1], "", None, self.A_NONE
|
||
)
|
||
else:
|
||
self.theTokens[n] = (
|
||
self.T_SKIP, tToken[1], "", None, self.A_NONE
|
||
)
|
||
elif tTemp == self.fmtScene:
|
||
if self.firstScene:
|
||
self.theTokens[n] = (
|
||
self.T_EMPTY, tToken[1], "", None, self.A_NONE
|
||
)
|
||
else:
|
||
self.theTokens[n] = (
|
||
self.T_SEP, tToken[1], tTemp, None, self.A_CENTRE
|
||
)
|
||
else:
|
||
self.theTokens[n] = (
|
||
tToken[0], tToken[1], tTemp, None, self.A_NONE
|
||
)
|
||
|
||
# Definitely no longer the first scene
|
||
self.firstScene = False
|
||
|
||
elif tToken[0] == self.T_HEAD4:
|
||
# Novel Section
|
||
# =============
|
||
|
||
tTemp = self._formatHeading(self.fmtSection, tToken[2])
|
||
if tTemp == "" and self.hideSection:
|
||
self.theTokens[n] = (
|
||
self.T_EMPTY, tToken[1], "", None, self.A_NONE
|
||
)
|
||
elif tTemp == "" and not self.hideSection:
|
||
self.theTokens[n] = (
|
||
self.T_SKIP, tToken[1], "", None, self.A_NONE
|
||
)
|
||
elif tTemp == self.fmtSection:
|
||
self.theTokens[n] = (
|
||
self.T_SEP, tToken[1], tTemp, None, self.A_CENTRE
|
||
)
|
||
else:
|
||
self.theTokens[n] = (
|
||
tToken[0], tToken[1], tTemp, None, self.A_NONE
|
||
)
|
||
|
||
# For title page and partitions, we need to centre all text.
|
||
# For partition, we also add a page break before, and for
|
||
# both types we always add a page break after the content.
|
||
# We also swap header level 1 with a title type instead.
|
||
if self.isTitle or self.isPart:
|
||
for n, tToken in enumerate(self.theTokens):
|
||
if tToken[0] == self.T_HEAD1:
|
||
if self.isTitle:
|
||
aStyle = self.A_PBB_AUT | self.A_CENTRE
|
||
self.theTokens[n] = (
|
||
self.T_TITLE, tToken[1], tToken[2], tToken[3], aStyle
|
||
)
|
||
else:
|
||
aStyle = self.A_PBB | self.A_CENTRE
|
||
self.theTokens[n] = (
|
||
tToken[0], tToken[1], tToken[2], tToken[3], aStyle
|
||
)
|
||
else:
|
||
self.theTokens[n] = (
|
||
tToken[0], tToken[1], tToken[2], tToken[3], self.A_CENTRE
|
||
)
|
||
|
||
# Add a page break after the last entry
|
||
n = len(self.theTokens) - 1
|
||
if n >= 0:
|
||
tToken = self.theTokens[n]
|
||
self.theTokens[n] = (
|
||
tToken[0], tToken[1], tToken[2], tToken[3], tToken[4] | self.A_PBA
|
||
)
|
||
|
||
# A single page is always left-aligned and starts on a fresh
|
||
# page, unless it's empty.
|
||
if self.isPage:
|
||
for n, tToken in enumerate(self.theTokens):
|
||
if n == 0:
|
||
self.theTokens[n] = (
|
||
tToken[0], tToken[1], tToken[2], tToken[3], self.A_LEFT | self.A_PBB
|
||
)
|
||
else:
|
||
self.theTokens[n] = (
|
||
tToken[0], tToken[1], tToken[2], tToken[3], self.A_LEFT
|
||
)
|
||
|
||
return True
|
||
|
||
def saveRawMarkdown(self, savePath):
|
||
"""Save the data to a plain text file.
|
||
"""
|
||
with open(savePath, mode="w", encoding="utf8") as outFile:
|
||
for nwdPage in self.theMarkdown:
|
||
outFile.write(nwdPage)
|
||
return
|
||
|
||
##
|
||
# Internal Functions
|
||
##
|
||
|
||
def _formatHeading(self, theTitle, theText):
|
||
"""Replaces the %keyword% strings.
|
||
"""
|
||
theTitle = theTitle.replace(r"%title%", theText)
|
||
theTitle = theTitle.replace(r"%ch%", str(self.numChapter))
|
||
theTitle = theTitle.replace(r"%sc%", str(self.numChScene))
|
||
theTitle = theTitle.replace(r"%sca%", str(self.numAbsScene))
|
||
if r"%chw%" in theTitle:
|
||
theTitle = theTitle.replace(r"%chw%", numberToWord(self.numChapter, "en"))
|
||
if r"%chi%" in theTitle:
|
||
theTitle = theTitle.replace(r"%chi%", numberToRoman(self.numChapter, True))
|
||
if r"%chI%" in theTitle:
|
||
theTitle = theTitle.replace(r"%chI%", numberToRoman(self.numChapter, False))
|
||
return theTitle
|
||
|
||
# END Class Tokenizer
|