Veronica K. B. Olsen
576 lines
20 KiB
Python
576 lines
20 KiB
Python
# -*- coding: utf-8 -*-
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"""novelWriter Text Tokenizer
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novelWriter – Text Tokenizer
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==============================
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Splits a piece of nW 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 2020, 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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import nw
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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
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from nw.constants import nwItemLayout, nwItemType
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logger = logging.getLogger(__name__)
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class Tokenizer():
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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_U_B = 5 # Begin underline
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FMT_U_E = 6 # End underline
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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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A_NONE = 0 # No special style
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A_LEFT = 1 # Left aligned
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A_RIGHT = 2 # Right aligned
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A_CENTRE = 4 # Centred
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A_JUSTIFY = 8 # Justified
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A_PBB = 16 # Page break before always
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A_PBB_AV = 32 # Page break before avoid
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A_PBB_NO = 64 # Page break before never
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A_PBA = 128 # Page break after always
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A_PBA_AV = 256 # Page break after avoid
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A_PBA_NO = 512 # Page break after avoid
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def __init__(self, theProject, theParent):
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self.mainConf = nw.CONFIG
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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 = None # 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 = None # The list of the processed tokens
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self.theResult = None # The result text after conversion
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self.theMarkdown = None # The result text in novelWriter markdown
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# User Settings
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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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self.doJustify = False # Justify text
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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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# 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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return
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def clearData(self):
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"""Clear the data arrays and variables, but not settings, so the class
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can be reused for multiple documents.
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"""
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self.theText = None
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self.theHandle = None
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self.theItem = None
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self.theTokens = None
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self.theResult = None
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self.theMarkdown = None
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self.numChapter = 0
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self.firstScene = False
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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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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 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 setJustify(self, doJustify):
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self.doJustify = doJustify
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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 if 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, theTitle, None, self.A_PBB | self.A_CENTRE
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))
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self.theMarkdown = "# %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
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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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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
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def getResult(self):
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"""Return the result from the conversion.
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"""
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return self.theResult
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def getFilteredMarkdown(self):
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"""Return the novelWriter markdown after the filters have been applied.
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"""
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return self.theMarkdown
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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.
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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 text content of the block, without leading tags
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3: The internal formatting map of the text, self.FMT_*
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4: 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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# Keep in sync with the DocHighlighter class
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rxFormats = [(
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QRegularExpression(r"(?<![\w|\\])([\*]{2})(?!\s)(?m:(.+?))(?<![\s|\\])(\1)(?!\w)"),
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[None, self.FMT_B_B, None, self.FMT_B_E]
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),(
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QRegularExpression(r"(?<![\w|_|\\])([_])(?!\s|\1)(?m:(.+?))(?<![\s|\\])(\1)(?!\w)"),
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[None, self.FMT_I_B, None, self.FMT_I_E]
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),(
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QRegularExpression(r"(?<![\w|\\])([_]{2})(?!\s)(?m:(.+?))(?<![\s|\\])(\1)(?!\w)"),
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[None, self.FMT_U_B, None, self.FMT_U_E]
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)]
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self.theTokens = []
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self.theMarkdown = ""
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tmpMarkdown = []
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for aLine in self.theText.splitlines():
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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, "", None, self.A_NONE
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))
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tmpMarkdown.append("\n")
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elif aLine[0] == "%":
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cLine = aLine[1:].strip()
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if cLine.lower().startswith("synopsis:"):
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self.theTokens.append((
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self.T_SYNOPSIS, cLine[9:].strip(), None, self.A_NONE
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))
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if self.doSynopsis:
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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, aLine[1:].strip(), None, self.A_NONE
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))
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if self.doComments:
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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, aLine[1:].strip(), None, self.A_NONE
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))
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if self.doKeywords:
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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, aLine[2:].strip(), None, self.A_NONE
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))
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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, aLine[3:].strip(), None, self.A_NONE
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))
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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, aLine[4:].strip(), None, self.A_NONE
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))
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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, aLine[5:].strip(), None, self.A_NONE
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))
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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, aLine, fmtPos, self.A_NONE
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))
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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, "", None, self.A_NONE
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))
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tmpMarkdown.append("\n")
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self.theMarkdown = "".join(tmpMarkdown)
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tmpMarkdown = []
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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
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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 in range(len(self.theTokens)):
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tToken = self.theTokens[n]
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tType = tToken[0]
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tText = tToken[1]
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# In case we see text before a scene, we reset the flag
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if tType == self.T_TEXT:
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self.firstScene = False
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elif tType == self.T_HEAD1:
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# Main Title
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# ==========
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tText = self._formatHeading(self.fmtTitle, tText)
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self.theTokens[n] = (
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tType, tText, None, self.A_NONE
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)
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elif tType == 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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tText = self._formatHeading(self.fmtUnNum, tText)
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else:
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self.numChapter += 1
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tText = self._formatHeading(self.fmtChapter, tText)
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# Format the chapter header
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self.theTokens[n] = (
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tType, tText, None, self.A_PBB
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)
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# Set scene variables
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self.firstScene = True
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self.numChScene = 0
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elif tType == self.T_HEAD3:
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# Novel Scene
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# ===========
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self.numChScene += 1
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self.numAbsScene += 1
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tTemp = self._formatHeading(self.fmtScene, tText)
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if tTemp == "" and self.hideScene:
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self.theTokens[n] = (
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self.T_EMPTY, "", None, self.A_NONE
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)
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elif tTemp == "" and not self.hideScene:
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if self.firstScene:
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self.theTokens[n] = (
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self.T_EMPTY, "", None, self.A_NONE
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)
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else:
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self.theTokens[n] = (
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self.T_SKIP, "", None, self.A_NONE
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)
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elif tTemp == self.fmtScene:
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if self.firstScene:
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self.theTokens[n] = (
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self.T_EMPTY, "", None, self.A_NONE
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)
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else:
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self.theTokens[n] = (
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self.T_SEP, tTemp, None, self.A_CENTRE
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)
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else:
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self.theTokens[n] = (
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tType, tTemp, None, self.A_NONE
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)
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# Definitely no longer the first scene
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self.firstScene = False
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elif tType == self.T_HEAD4:
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# Novel Section
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# =============
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tTemp = self._formatHeading(self.fmtSection, tText)
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if tTemp == "" and self.hideSection:
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self.theTokens[n] = (
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self.T_EMPTY, "", None, self.A_NONE
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)
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elif tTemp == "" and not self.hideSection:
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self.theTokens[n] = (
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self.T_SKIP, "", None, self.A_NONE
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)
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elif tTemp == self.fmtSection:
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self.theTokens[n] = (
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self.T_SEP, tTemp, None, self.A_CENTRE
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)
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else:
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self.theTokens[n] = (
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tType, tTemp, None, self.A_NONE
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)
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# For title page and partitions, we need to centre all text.
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# For partition, we also add a page break before, and for
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# both types we always add a page break after the content.
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# We also swap header level 1 with a title type instead.
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if self.isTitle or self.isPart:
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for n, tToken in enumerate(self.theTokens):
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tType = tToken[0]
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tText = tToken[1]
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tFormat = tToken[2]
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if tType == self.T_HEAD1:
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if self.isTitle:
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self.theTokens[n] = (
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self.T_TITLE, tText, tFormat, self.A_PBB_NO | self.A_CENTRE
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)
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else:
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self.theTokens[n] = (
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||
tType, tText, tFormat, self.A_PBB | self.A_CENTRE
|
||
)
|
||
else:
|
||
self.theTokens[n] = (
|
||
tType, tText, tFormat, 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] | 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):
|
||
tType = tToken[0]
|
||
tText = tToken[1]
|
||
tFormat = tToken[2]
|
||
if n == 0:
|
||
self.theTokens[n] = (
|
||
tType, tText, tFormat, self.A_LEFT | self.A_PBB
|
||
)
|
||
else:
|
||
self.theTokens[n] = (
|
||
tType, tText, tFormat, self.A_LEFT
|
||
)
|
||
|
||
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))
|
||
theTitle = theTitle.replace(r"%chw%", numberToWord(self.numChapter,"en"))
|
||
return theTitle
|
||
|
||
# END Class Tokenizer
|