Veronica K. B. Olsen
457 lines
15 KiB
Python
457 lines
15 KiB
Python
# -*- coding: utf-8 -*-
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"""
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novelWriter – HTML Text Converter
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=================================
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Extends the Tokenizer class to generate HTML output
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File History:
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Created: 2019-05-07 [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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from nw.core.tokenizer import Tokenizer
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from nw.constants import nwKeyWords, nwLabels, nwHtmlUnicode
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logger = logging.getLogger(__name__)
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class ToHtml(Tokenizer):
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M_PREVIEW = 0 # Tweak output for the DocViewer
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M_EXPORT = 1 # Tweak output for saving to HTML or printing
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M_EBOOK = 2 # Tweak output for converting to epub
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def __init__(self, theProject, theParent):
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Tokenizer.__init__(self, theProject, theParent)
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self.genMode = self.M_EXPORT
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self.cssStyles = True
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self.fullHTML = []
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# Internals
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self._trMap = {}
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self.setReplaceUnicode(False)
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return
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##
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# Setters
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##
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def setPreview(self, doComments, doSynopsis):
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"""If we're using this class to generate markdown preview, we
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need to make a few changes to formatting, which is managed by
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these flags.
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"""
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self.genMode = self.M_PREVIEW
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self.doKeywords = True
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self.doComments = doComments
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self.doSynopsis = doSynopsis
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return
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def setStyles(self, cssStyles):
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"""Enable/disable CSS styling. Some elements may still have
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class tags.
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"""
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self.cssStyles = cssStyles
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return
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def setReplaceUnicode(self, doReplace):
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"""Set the translation map to either minimal or full unicode to
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html entities replacement.
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"""
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# Control characters must always be replaced
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self._trMap = str.maketrans({
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"<" : "<",
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">" : ">",
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"&" : "&",
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})
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if doReplace:
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# Extend to all relevant Unicode characters
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self._trMap.update(str.maketrans(nwHtmlUnicode.U_TO_H))
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return
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##
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# Class Methods
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##
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def getFullResultSize(self):
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"""Return the size of the full HTML result.
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"""
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return sum([len(x) for x in self.fullHTML])
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def doPreProcessing(self):
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"""Extend the auto-replace to also properly encode some unicode
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characters into their respective HTML entities.
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"""
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Tokenizer.doPreProcessing(self)
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self.theText = self.theText.translate(self._trMap)
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return
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def doConvert(self):
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"""Convert the list of text tokens into a HTML document saved
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to theResult.
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"""
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if self.genMode == self.M_PREVIEW:
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htmlTags = { # HTML4 + CSS2
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self.FMT_B_B : "<b>",
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self.FMT_B_E : "</b>",
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self.FMT_I_B : "<i>",
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self.FMT_I_E : "</i>",
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self.FMT_D_B : "<span style='text-decoration: line-through;'>",
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self.FMT_D_E : "</span>",
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}
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else:
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htmlTags = { # HTML5
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self.FMT_B_B : "<strong>",
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self.FMT_B_E : "</strong>",
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self.FMT_I_B : "<em>",
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self.FMT_I_E : "</em>",
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self.FMT_D_B : "<del>",
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self.FMT_D_E : "</del>",
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}
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if self.isNovel and self.genMode != self.M_PREVIEW:
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# For novel files for export, we bump the titles one level
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# up as this is more useful for printing and word processor
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# imports.
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h1Cl = " class='title'"
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h1 = "h1"
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h2 = "h1"
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h3 = "h2"
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h4 = "h3"
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else:
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h1Cl = ""
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h1 = "h1"
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h2 = "h2"
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h3 = "h3"
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h4 = "h4"
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self.theResult = ""
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thisPar = []
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parStyle = None
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tmpResult = []
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hasHardBreak = False
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for tType, tLine, tText, tFormat, tStyle in self.theTokens:
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# Styles
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aStyle = []
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if tStyle is not None and self.cssStyles:
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if tStyle & self.A_LEFT:
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aStyle.append("text-align: left;")
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elif tStyle & self.A_RIGHT:
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aStyle.append("text-align: right;")
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elif tStyle & self.A_CENTRE:
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aStyle.append("text-align: center;")
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elif tStyle & self.A_JUSTIFY:
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aStyle.append("text-align: justify;")
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if tStyle & self.A_PBB:
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aStyle.append("page-break-before: always;")
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elif tStyle & self.A_PBB_AUT:
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aStyle.append("page-break-before: auto;")
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if tStyle & self.A_PBA:
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aStyle.append("page-break-after: always;")
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elif tStyle & self.A_PBA_AUT:
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aStyle.append("page-break-after: auto;")
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if tStyle & self.A_Z_BTMMRG:
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aStyle.append("margin-bottom: 0;")
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if tStyle & self.A_Z_TOPMRG:
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aStyle.append("margin-top: 0;")
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if len(aStyle) > 0:
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hStyle = " style='%s'" % (" ".join(aStyle))
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else:
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hStyle = ""
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if self.linkHeaders:
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aNm = "<a name='T%06d'></a>" % tLine
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else:
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aNm = ""
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# Process Text Type
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if tType == self.T_EMPTY:
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if parStyle is None:
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parStyle = ""
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if hasHardBreak and self.cssStyles:
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parClass = " class='break'"
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else:
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parClass = ""
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if len(thisPar) > 0:
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tTemp = "".join(thisPar)
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tmpResult.append("<p%s%s>%s</p>\n" % (parStyle, parClass, tTemp.rstrip()))
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thisPar = []
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parStyle = None
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hasHardBreak = False
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elif tType == self.T_TITLE:
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tHead = tText.replace(r"\\", "<br/>")
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tmpResult.append("<h1 class='title'%s>%s%s</h1>\n" % (hStyle, aNm, tHead))
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elif tType == self.T_HEAD1:
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tHead = tText.replace(r"\\", "<br/>")
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tmpResult.append("<%s%s%s>%s%s</%s>\n" % (h1, h1Cl, hStyle, aNm, tHead, h1))
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elif tType == self.T_HEAD2:
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tHead = tText.replace(r"\\", "<br/>")
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tmpResult.append("<%s%s>%s%s</%s>\n" % (h2, hStyle, aNm, tHead, h2))
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elif tType == self.T_HEAD3:
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tHead = tText.replace(r"\\", "<br/>")
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tmpResult.append("<%s%s>%s%s</%s>\n" % (h3, hStyle, aNm, tHead, h3))
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elif tType == self.T_HEAD4:
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tHead = tText.replace(r"\\", "<br/>")
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tmpResult.append("<%s%s>%s%s</%s>\n" % (h4, hStyle, aNm, tHead, h4))
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elif tType == self.T_SEP:
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tmpResult.append("<p class='sep'>%s</p>\n" % tText)
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elif tType == self.T_SKIP:
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tmpResult.append("<p class='skip'> </p>\n")
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elif tType == self.T_TEXT:
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tTemp = tText
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if parStyle is None:
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parStyle = hStyle
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for xPos, xLen, xFmt in reversed(tFormat):
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tTemp = tTemp[:xPos] + htmlTags[xFmt] + tTemp[xPos+xLen:]
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if tText.endswith(" "):
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thisPar.append(tTemp.rstrip() + "<br/>")
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hasHardBreak = True
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else:
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thisPar.append(tTemp.rstrip() + " ")
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elif tType == self.T_SYNOPSIS and self.doSynopsis:
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tmpResult.append(self._formatSynopsis(tText))
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elif tType == self.T_COMMENT and self.doComments:
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tmpResult.append(self._formatComments(tText))
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elif tType == self.T_KEYWORD and self.doKeywords:
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tTemp = "<p%s>%s</p>\n" % (hStyle, self._formatKeywords(tText))
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tmpResult.append(tTemp)
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self.theResult = "".join(tmpResult)
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tmpResult = []
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if self.genMode != self.M_PREVIEW:
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self.fullHTML.append(self.theResult)
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return
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def saveHTML5(self, savePath):
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"""Save the data to an .html file.
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"""
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with open(savePath, mode="w", encoding="utf8") as outFile:
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theStyle = self.getStyleSheet()
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theStyle.append("article {width: 800px; margin: 40px auto;}")
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bodyText = "".join(self.fullHTML)
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bodyText = bodyText.replace("\t", "	").rstrip()
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theHtml = (
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"<!DOCTYPE html>\n"
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"<html>\n"
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"<head>\n"
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"<meta charset='utf-8'>\n"
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"<title>{projTitle:s}</title>\n"
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"</head>\n"
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"<style>\n"
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"{htmlStyle:s}\n"
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"</style>\n"
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"<body>\n"
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"<article>\n"
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"{bodyText:s}\n"
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"</article>\n"
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"</body>\n"
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"</html>\n"
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).format(
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projTitle = self.theProject.projName,
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htmlStyle = "\n".join(theStyle),
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bodyText = bodyText,
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)
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outFile.write(theHtml)
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return
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def replaceTabs(self, nSpaces=8, spaceChar=" "):
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"""Replace tabs with spaces in the html.
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"""
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htmlText = []
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eightSpace = spaceChar*nSpaces
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for aLine in self.fullHTML:
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htmlText.append(aLine.replace("\t", eightSpace))
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self.fullHTML = htmlText
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return
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def getStyleSheet(self):
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"""Generate a stylesheet appropriate for the current settings.
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"""
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theStyles = []
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if not self.cssStyles:
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return theStyles
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mScale = self.lineHeight/1.15
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textAlign = "justify" if self.doJustify else "left"
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theStyles.append("body {font-family: '%s'; font-size: %dpt;}" % (
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self.textFont, self.textSize
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))
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theStyles.append((
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"p {"
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"text-align: %s; line-height: %d%%; "
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"margin-top: %.2fem; margin-bottom: %.2fem;"
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"}"
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) % (
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textAlign,
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round(100 * self.lineHeight),
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mScale * self.marginText[0],
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mScale * self.marginText[1],
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))
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theStyles.append((
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"h1 {"
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"color: rgb(66, 113, 174); "
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"page-break-after: avoid; "
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"margin-top: %.2fem; "
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"margin-bottom: %.2fem;"
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"}"
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) % (
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mScale * self.marginHead1[0], mScale * self.marginHead1[1]
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))
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theStyles.append((
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"h2 {"
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"color: rgb(66, 113, 174); "
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"page-break-after: avoid; "
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"margin-top: %.2fem; "
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"margin-bottom: %.2fem;"
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"}"
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) % (
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mScale * self.marginHead2[0], mScale * self.marginHead2[1]
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))
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theStyles.append((
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"h3 {"
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"color: rgb(50, 50, 50); "
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"page-break-after: avoid; "
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"margin-top: %.2fem; "
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"margin-bottom: %.2fem;"
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"}"
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) % (
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mScale * self.marginHead3[0], mScale * self.marginHead3[1]
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))
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theStyles.append((
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"h4 {"
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"color: rgb(50, 50, 50); "
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"page-break-after: avoid; "
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"margin-top: %.2fem; "
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"margin-bottom: %.2fem;"
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"}"
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) % (
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mScale * self.marginHead4[0], mScale * self.marginHead4[1]
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))
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theStyles.append((
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".title {"
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"font-size: 2.5em; "
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"margin-top: %.2fem; "
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"margin-bottom: %.2fem;"
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"}"
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) % (
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mScale * self.marginTitle[0], mScale * self.marginTitle[1]
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))
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theStyles.append((
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".sep, .skip {"
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"text-align: center; "
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"margin-top: %.2fem; "
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"margin-bottom: %.2fem;}"
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) % (
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mScale, mScale
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))
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theStyles.append("a {color: rgb(66, 113, 174);}")
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theStyles.append(".tags {color: rgb(245, 135, 31); font-weight: bold;}")
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theStyles.append(".break {text-align: left;}")
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theStyles.append(".synopsis {font-style: italic;}")
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theStyles.append(".comment {font-style: italic; color: rgb(100, 100, 100);}")
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return theStyles
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##
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# Internal Functions
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##
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def _formatSynopsis(self, tText):
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"""Apply HTML formatting to synopsis.
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"""
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if self.genMode == self.M_PREVIEW:
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sSynop = self._trSynopsis
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return f"<p class='comment'><span class='synopsis'>{sSynop}:</span> {tText}</p>\n"
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else:
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sSynop = self._localLookup("Synopsis")
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return f"<p class='synopsis'><strong>{sSynop}:</strong> {tText}</p>\n"
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def _formatComments(self, tText):
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"""Apply HTML formatting to comments.
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"""
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if self.genMode == self.M_PREVIEW:
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return f"<p class='comment'>{tText}</p>\n"
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else:
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sComm = self._localLookup("Comment")
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return f"<p class='comment'><strong>{sComm}:</strong> {tText}</p>\n"
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def _formatKeywords(self, tText):
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"""Apply HTML formatting to keywords.
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"""
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isValid, theBits, thePos = self.theParent.theIndex.scanThis("@"+tText)
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if not isValid or not theBits:
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return ""
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retText = ""
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refTags = []
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if theBits[0] in nwLabels.KEY_NAME:
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retText += "<span class='tags'>%s:</span> " % nwLabels.KEY_NAME[theBits[0]]
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if len(theBits) > 1:
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if theBits[0] == nwKeyWords.TAG_KEY:
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retText += "<a name='tag_%s'>%s</a>" % (
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theBits[1], theBits[1]
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)
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else:
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if self.genMode == self.M_PREVIEW:
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for tTag in theBits[1:]:
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refTags.append("<a href='#%s=%s'>%s</a>" % (
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theBits[0][1:], tTag, tTag
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))
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retText += ", ".join(refTags)
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else:
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for tTag in theBits[1:]:
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refTags.append("<a href='#tag_%s'>%s</a>" % (
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tTag, tTag
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))
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retText += ", ".join(refTags)
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return retText
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# END Class ToHtml
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