Veronica Berglyd Olsen
593 lines
22 KiB
Python
593 lines
22 KiB
Python
"""
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novelWriter – Project XML Read/Write
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====================================
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File History:
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Created: 2022-09-28 [2.0rc2] XMLReadState
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Created: 2022-09-28 [2.0rc2] ProjectXMLReader
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Created: 2022-10-31 [2.0rc2] ProjectXMLWriter
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This file is a part of novelWriter
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Copyright 2018–2023, 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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from __future__ import annotations
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import logging
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import xml.etree.ElementTree as ET
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from enum import Enum
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from time import time
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from pathlib import Path
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from typing import TYPE_CHECKING
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from novelwriter import __version__, __hexversion__
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from novelwriter.common import (
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checkBool, checkInt, checkString, checkStringNone, formatTimeStamp,
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hexToInt, simplified, xmlIndent, yesNo
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)
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from novelwriter.constants import nwFiles
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if TYPE_CHECKING:
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from novelwriter.core.status import NWStatus
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from novelwriter.core.projectdata import NWProjectData
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logger = logging.getLogger(__name__)
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FILE_VERSION = "1.5" # The current project file format version
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HEX_VERSION = 0x0105
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NUM_VERSION = {
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"1.0": 0x0100, # Up to 0.7
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"1.1": 0x0101, # Up to 0.10
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"1.2": 0x0102, # Up to 1.5
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"1.3": 0x0103, # Up to 2.0 Beta 1
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"1.4": 0x0104, # Up to 2.0 RC 2
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"1.5": 0x0105, # Current
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}
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class XMLReadState(Enum):
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"""The state of an XML read process."""
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NO_ACTION = 0
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NO_ERROR = 1
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PARSED_BACKUP = 2
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CANNOT_PARSE = 3
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NOT_NWX_FILE = 4
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UNKNOWN_VERSION = 5
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PARSED_OK = 6
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WAS_LEGACY = 7
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# END Class XMLReadState
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class ProjectXMLReader:
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"""Core: Project XML Reader
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All data is read into a NWProjectData instance, which must be
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provided.
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File Format Version Change History
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==================================
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1.0 Original file format.
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1.1 Changes the way documents are structured in the project folder
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from data_X, where X is the first hex value of the handle, to a
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single content folder. Introduced in version 0.7.
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1.2 Changes the way autoReplace entries are stored. Introduced in
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version 0.10.
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1.3 Reduces the number of layouts to only two. One for novel
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documents and one for project notes. Introduced in version 1.5.
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1.4 Introduces a more compact format for storing items. All settings
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aside from name are now attributes. This format also changes the
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way satus and importance labels are stored. This format was only
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a part of version 2.0 RC 1
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1.5 The actual format released for 2.0. It moves last used handles
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and title formats into a key/value format similar to auto-
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replace, status and imporetance. It adds the heading value to
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the content item meta entry. It also moves meta data related to
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the project or the content into their respective section nodes
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as attributes. The id attribute was also added to the project.
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"""
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def __init__(self, path):
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self._path = Path(path)
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self._state = XMLReadState.NO_ACTION
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self._root = ""
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self._version = 0x0
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self._appVersion = ""
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self._hexVersion = 0x0
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self._timeStamp = ""
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return
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##
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# Properties
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##
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@property
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def state(self) -> XMLReadState:
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"""Return the parsing state."""
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return self._state
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@property
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def xmlRoot(self) -> str:
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"""Return the root tag name of the XNL file."""
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return self._root
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@property
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def xmlVersion(self) -> int:
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"""Return the project XML version number."""
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return self._version
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@property
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def appVersion(self) -> str:
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"""Return the version number who wrote the file."""
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return self._appVersion
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@property
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def hexVersion(self) -> int:
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"""Return the version number who wrote the file as hex."""
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return self._hexVersion
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@property
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def timeStamp(self) -> str:
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"""Return the date and time when the file was written."""
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return self._timeStamp
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##
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# Methods
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##
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def read(self, data: NWProjectData, content: list) -> bool:
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"""Read and parse the project XML file."""
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tStart = time()
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logger.debug("Reading project XML")
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try:
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xml = ET.parse(str(self._path))
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self._state = XMLReadState.NO_ERROR
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except Exception as exc:
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# Trying to open backup file instead
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logger.error("Failed to parse project XML", exc_info=exc)
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self._state = XMLReadState.CANNOT_PARSE
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backFile = self._path.with_suffix(".bak")
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if backFile.is_file():
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try:
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xml = ET.parse(str(backFile))
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self._state = XMLReadState.PARSED_BACKUP
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logger.info("Backup project file parsed")
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except Exception as exc:
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logger.error("Failed to parse backup project XML", exc_info=exc)
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self._state = XMLReadState.CANNOT_PARSE
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return False
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else:
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self._state = XMLReadState.CANNOT_PARSE
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return False
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xRoot = xml.getroot()
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self._root = str(xRoot.tag)
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if self._root != "novelWriterXML":
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self._state = XMLReadState.NOT_NWX_FILE
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return False
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fileVersion = str(xRoot.attrib.get("fileVersion", ""))
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if fileVersion in NUM_VERSION:
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self._version = NUM_VERSION[fileVersion]
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else:
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self._state = XMLReadState.UNKNOWN_VERSION
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return False
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logger.debug("XML is '%s' version '%s'", self._root, fileVersion)
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self._appVersion = str(xRoot.attrib.get("appVersion", ""))
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self._hexVersion = hexToInt(xRoot.attrib.get("hexVersion", ""))
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self._timeStamp = str(xRoot.attrib.get("timeStamp", ""))
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for xSection in xRoot:
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if xSection.tag == "project":
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self._parseProjectMeta(xSection, data)
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elif xSection.tag == "settings":
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self._parseProjectSettings(xSection, data)
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elif xSection.tag == "content":
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if self._version >= 0x0104:
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self._parseProjectContent(xSection, data, content)
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else:
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self._parseProjectContentLegacy(xSection, data, content)
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else:
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logger.warning("Ignored <root/%s> in XML", xSection.tag)
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if self._version == HEX_VERSION:
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self._state = XMLReadState.PARSED_OK
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else:
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self._state = XMLReadState.WAS_LEGACY
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logger.debug("Project XML loaded in %.3f ms", (time() - tStart)*1000)
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return True
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##
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# Internal Functions
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##
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def _parseProjectMeta(self, xSection: ET.Element, data: NWProjectData):
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"""Parse the project section of the XML file."""
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logger.debug("Parsing <project> section")
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data.setUuid(xSection.attrib.get("id", None)) # Added in 1.5
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data.setSaveCount(xSection.attrib.get("saveCount", 0)) # Moved in 1.5
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data.setAutoCount(xSection.attrib.get("autoCount", 0)) # Moved in 1.5
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data.setEditTime(xSection.attrib.get("editTime", 0)) # Moved in 1.5
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for xItem in xSection:
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if xItem.tag == "name":
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data.setName(xItem.text)
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elif xItem.tag == "title":
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data.setTitle(xItem.text)
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elif xItem.tag == "author":
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data.setAuthor(xItem.text)
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else:
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logger.warning("Ignored <root/project/%s> in XML", xItem.tag)
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# Deprecated Nodes
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if self._version < HEX_VERSION:
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for xItem in xSection:
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if xItem.tag == "saveCount": # Moved to attribute in 1.5
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data.setSaveCount(xItem.text)
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elif xItem.tag == "autoCount": # Moved to attribute in 1.5
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data.setAutoCount(xItem.text)
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elif xItem.tag == "editTime": # Moved to attribute in 1.5
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data.setEditTime(xItem.text)
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return
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def _parseProjectSettings(self, xSection: ET.Element, data: NWProjectData):
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"""Parse the settings section of the XML file."""
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logger.debug("Parsing <settings> section")
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for xItem in xSection:
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if xItem.tag == "doBackup":
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data.setDoBackup(xItem.text)
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elif xItem.tag == "language":
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data.setLanguage(xItem.text)
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elif xItem.tag == "spellChecking":
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data.setSpellLang(xItem.text)
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data.setSpellCheck(xItem.attrib.get("auto", False))
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elif xItem.tag == "status":
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self._parseStatusImport(xItem, data.itemStatus)
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elif xItem.tag == "importance":
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self._parseStatusImport(xItem, data.itemImport)
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elif xItem.tag == "lastHandle":
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data.setLastHandle(self._parseDictKeyText(xItem))
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elif xItem.tag == "autoReplace":
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if self._version >= 0x0102:
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data.setAutoReplace(self._parseDictKeyText(xItem))
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else: # Pre 1.2 format
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data.setAutoReplace(self._parseDictTagText(xItem))
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else:
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logger.warning("Ignored <root/settings/%s> in XML", xItem.tag)
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# Deprecated Nodes
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if self._version < HEX_VERSION:
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for xItem in xSection:
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if xItem.tag == "spellCheck": # Changed to spellChecking in 1.5
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data.setSpellCheck(xItem.text)
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elif xItem.tag == "spellLang": # Changed to spellChecking in 1.5
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data.setSpellLang(xItem.text)
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elif xItem.tag == "novelWordCount": # Moved to content attribute in 1.5
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data.setInitCounts(novel=xItem.text)
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elif xItem.tag == "notesWordCount": # Moved to content attribute in 1.5
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data.setInitCounts(notes=xItem.text)
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return
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def _parseProjectContent(self, xSection: ET.Element, data: NWProjectData, content: list):
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"""Parse the content section of the XML file."""
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logger.debug("Parsing <content> section")
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data.setInitCounts(novel=xSection.attrib.get("novelWords", None)) # Moved in 1.5
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data.setInitCounts(notes=xSection.attrib.get("notesWords", None)) # Moved in 1.5
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for xItem in xSection:
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if xItem.tag != "item":
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logger.warning("Ignored item <root/content/%s> in XML", xItem.tag)
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continue
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item = {}
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meta = {}
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name = {}
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itemName = ""
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item["handle"] = checkStringNone(xItem.attrib.get("handle"), None)
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item["parent"] = checkStringNone(xItem.attrib.get("parent"), None)
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item["root"] = checkStringNone(xItem.attrib.get("root"), None)
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item["order"] = checkInt(xItem.attrib.get("order"), 0)
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item["type"] = checkString(xItem.attrib.get("type"), "NO_TYPE")
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item["class"] = checkString(xItem.attrib.get("class"), "NO_CLASS")
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item["layout"] = checkString(xItem.attrib.get("layout"), "NO_LAYOUT")
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for xVal in xItem:
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if xVal.tag == "meta":
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meta["expanded"] = checkBool(xVal.attrib.get("expanded"), False)
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meta["heading"] = checkString(xVal.attrib.get("heading"), "H0")
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meta["charCount"] = checkInt(xVal.attrib.get("charCount"), 0)
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meta["wordCount"] = checkInt(xVal.attrib.get("wordCount"), 0)
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meta["paraCount"] = checkInt(xVal.attrib.get("paraCount"), 0)
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meta["cursorPos"] = checkInt(xVal.attrib.get("cursorPos"), 0)
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elif xVal.tag == "name":
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itemName = simplified(checkString(xVal.text, ""))
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name["status"] = checkStringNone(xVal.attrib.get("status"), None)
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name["import"] = checkStringNone(xVal.attrib.get("import"), None)
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name["active"] = checkBool(xVal.attrib.get("active"), False)
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else:
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logger.warning("Ignored <root/content/item/%s> in XML", xVal.tag)
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# Deprecated Nodes
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if self._version < HEX_VERSION:
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for xVal in xItem:
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if xVal.tag == "name" and "exported" in xVal.attrib:
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name["active"] = checkBool(xVal.attrib.get("exported"), False)
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content.append({
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"name": itemName,
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"itemAttr": item,
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"metaAttr": meta,
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"nameAttr": name,
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})
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return
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def _parseProjectContentLegacy(self, xSection: ET.Element, data: NWProjectData, content: list):
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"""Parse the content section of the XML file for older versions."""
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logger.debug("Parsing <content> section (legacy format)")
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# Create maps to look up name -> key for status and importance
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statusMap = {entry.get("name"): key for key, entry in data.itemStatus.items()}
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importMap = {entry.get("name"): key for key, entry in data.itemImport.items()}
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for xItem in xSection:
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if xItem.tag != "item":
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logger.warning("Ignored item <root/content/%s> in XML", xItem.tag)
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continue
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item = {}
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meta = {}
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name = {}
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itemName = ""
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item["handle"] = checkStringNone(xItem.attrib.get("handle", None), None)
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item["parent"] = checkStringNone(xItem.attrib.get("parent", None), None)
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item["root"] = None # Value was added in 1.4
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item["order"] = checkInt(xItem.attrib.get("order", 0), 0)
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meta["heading"] = "H0" # Value was added in 1.4
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tmpStatus = ""
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for xVal in xItem:
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if xVal.tag == "name":
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itemName = simplified(checkString(xVal.text, ""))
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elif xVal.tag == "status":
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tmpStatus = checkStringNone(xVal.text, None)
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elif xVal.tag == "type":
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item["type"] = checkString(xVal.text, "")
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elif xVal.tag == "class":
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item["class"] = checkString(xVal.text, "")
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elif xVal.tag == "layout":
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item["layout"] = checkString(xVal.text, "")
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elif xVal.tag == "expanded":
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meta["expanded"] = checkBool(xVal.text, False)
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elif xVal.tag == "exported": # Renamed to active in 1.5
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name["active"] = checkBool(xVal.text, False)
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elif xVal.tag == "charCount":
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meta["charCount"] = checkInt(xVal.text, 0)
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elif xVal.tag == "wordCount":
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meta["wordCount"] = checkInt(xVal.text, 0)
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elif xVal.tag == "paraCount":
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meta["paraCount"] = checkInt(xVal.text, 0)
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elif xVal.tag == "cursorPos":
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meta["cursorPos"] = checkInt(xVal.text, 0)
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else:
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logger.warning("Ignored <root/content/item/%s> in XML", xVal.tag)
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# Status was split into separate status/import with a key in 1.4
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if item.get("class", "") in ("NOVEL", "ARCHIVE"):
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name["status"] = statusMap.get(tmpStatus, None)
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else:
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name["import"] = importMap.get(tmpStatus, None)
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# A number of layouts were removed in 1.3
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if item.get("layout", "") in (
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"TITLE", "PAGE", "BOOK", "PARTITION", "UNNUMBERED", "CHAPTER", "SCENE"
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):
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item["layout"] = "DOCUMENT"
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# The trash type was removed in 1.4
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if item.get("type", "") == "TRASH":
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item["type"] = "ROOT"
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content.append({
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"name": itemName,
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"itemAttr": item,
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"metaAttr": meta,
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"nameAttr": name,
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})
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return
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def _parseStatusImport(self, xItem: ET.Element, sObject: NWStatus):
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"""Parse a status or importance entry."""
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for xEntry in xItem:
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if xEntry.tag == "entry":
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key = xEntry.attrib.get("key", None)
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red = checkInt(xEntry.attrib.get("red", 0), 0)
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green = checkInt(xEntry.attrib.get("green", 0), 0)
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blue = checkInt(xEntry.attrib.get("blue", 0), 0)
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count = checkInt(xEntry.attrib.get("count", 0), 0)
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sObject.write(key, xEntry.text, (red, green, blue), count)
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return
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def _parseDictKeyText(self, xItem: ET.Element) -> dict:
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"""Parse a dictionary stored with key as an attribute and the
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value as the text porperty.
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"""
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result = {}
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for xEntry in xItem:
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if xEntry.tag == "entry" and "key" in xEntry.attrib:
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result[xEntry.attrib["key"]] = checkString(xEntry.text, "")
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return result
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def _parseDictTagText(self, xItem):
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"""Parse a dictionary stored with key as the tag and the value
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as the text porperty.
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"""
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return {xNode.tag: checkString(xNode.text, "") for xNode in xItem}
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# END Class ProjectXMLReader
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class ProjectXMLWriter:
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"""Core: Project XML Writer
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The project writer class will only write a file according to the
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very latest spec.
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"""
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def __init__(self, path):
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self._path = Path(path)
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self._error = None
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return
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##
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# Properties
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##
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@property
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def error(self) -> Exception | None:
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"""Return the error status."""
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return self._error
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##
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# Methods
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##
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def write(self, data: NWProjectData, content: list, saveTime: float, editTime: int) -> bool:
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"""Write the project data and content to the XML files."""
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tStart = time()
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logger.debug("Writing project XML")
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xRoot = ET.Element("novelWriterXML", attrib={
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"appVersion": str(__version__),
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"hexVersion": str(__hexversion__),
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"fileVersion": FILE_VERSION,
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"timeStamp": formatTimeStamp(saveTime),
|
||
})
|
||
|
||
# Save Project Meta
|
||
projAttr = {
|
||
"id": data.uuid,
|
||
"saveCount": str(data.saveCount),
|
||
"autoCount": str(data.autoCount),
|
||
"editTime": str(editTime),
|
||
}
|
||
|
||
xProject = ET.SubElement(xRoot, "project", attrib=projAttr)
|
||
self._packSingleValue(xProject, "name", data.name)
|
||
self._packSingleValue(xProject, "title", data.title)
|
||
self._packSingleValue(xProject, "author", data.author)
|
||
|
||
# Save Project Settings
|
||
xSettings = ET.SubElement(xRoot, "settings")
|
||
self._packSingleValue(xSettings, "doBackup", yesNo(data.doBackup))
|
||
self._packSingleValue(xSettings, "language", data.language)
|
||
self._packSingleValue(xSettings, "spellChecking", data.spellLang, attrib={
|
||
"auto": yesNo(data.spellCheck)
|
||
})
|
||
self._packDictKeyValue(xSettings, "lastHandle", data.lastHandle)
|
||
self._packDictKeyValue(xSettings, "autoReplace", data.autoReplace)
|
||
|
||
# Save Status/Importance
|
||
xStatus = ET.SubElement(xSettings, "status")
|
||
for label, attrib in data.itemStatus.pack():
|
||
self._packSingleValue(xStatus, "entry", label, attrib=attrib)
|
||
|
||
xImport = ET.SubElement(xSettings, "importance")
|
||
for label, attrib in data.itemImport.pack():
|
||
self._packSingleValue(xImport, "entry", label, attrib=attrib)
|
||
|
||
# Save Tree Content
|
||
contAttr = {
|
||
"items": str(len(content)),
|
||
"novelWords": str(data.currCounts[0]),
|
||
"notesWords": str(data.currCounts[1]),
|
||
}
|
||
|
||
xContent = ET.SubElement(xRoot, "content", attrib=contAttr)
|
||
for item in content:
|
||
xItem = ET.SubElement(xContent, "item", attrib=item.get("itemAttr", {}))
|
||
ET.SubElement(xItem, "meta", attrib=item.get("metaAttr", {}))
|
||
xName = ET.SubElement(xItem, "name", attrib=item.get("nameAttr", {}))
|
||
xName.text = item["name"]
|
||
|
||
# Write the XML tree to file
|
||
saveFile = self._path / nwFiles.PROJ_FILE
|
||
tempFile = saveFile.with_suffix(".tmp")
|
||
backFile = saveFile.with_suffix(".bak")
|
||
try:
|
||
xml = ET.ElementTree(xRoot)
|
||
xmlIndent(xml)
|
||
xml.write(tempFile, encoding="utf-8", xml_declaration=True)
|
||
except Exception as exc:
|
||
self._error = exc
|
||
return False
|
||
|
||
# If we're here, the file was successfully saved,
|
||
# so let's sort out the temps and backups
|
||
try:
|
||
if saveFile.exists():
|
||
saveFile.replace(backFile)
|
||
tempFile.replace(saveFile)
|
||
except Exception as exc:
|
||
self._error = exc
|
||
return False
|
||
|
||
logger.debug("Project XML saved in %.3f ms", (time() - tStart)*1000)
|
||
|
||
return True
|
||
|
||
##
|
||
# Internal Functions
|
||
##
|
||
|
||
def _packSingleValue(
|
||
self, xParent: ET.Element, name: str, value: str | None, attrib: dict | None = None
|
||
):
|
||
"""Pack a single value into an XML element."""
|
||
xItem = ET.SubElement(xParent, name, attrib=attrib or {})
|
||
xItem.text = str(value) or ""
|
||
return
|
||
|
||
def _packDictKeyValue(self, xParent: ET.Element, name: str, data: dict):
|
||
"""Pack the entries of a dictionary into an XML element."""
|
||
xItem = ET.SubElement(xParent, name)
|
||
for key, value in data.items():
|
||
if len(key) > 0:
|
||
xEntry = ET.SubElement(xItem, "entry", attrib={"key": key})
|
||
xEntry.text = str(value) or ""
|
||
return
|
||
|
||
# END Class ProjectXMLWriter
|