Drop the project .bak file (#1670)

docs/source/tech_storage.rst

@@ -33,7 +33,7 @@ itself. It is important to keep this file backed up, either through the built-in
 your own backup solution.
 
 The project XML file is indent-formatted, and is suitable for diff tools and version control since
-most of the file will stay static, although a timesetamp is set in the meta section on line 2, and
+most of the file will stay static, although a timestamp is set in the meta section on line 2, and
 various meta data entries incremented, on each save.
 
 .. only:: not html
@@ -91,11 +91,6 @@ If successful, the old data file is then removed, and the temporary file replace
 that the previously saved data is only replaced when the new data has been successfully saved to
 the storage medium.
 
-For the project XML file, a ``.bak`` file is in addition kept, which will always contain the
-previous version of the file, although when auto-save is enabled, they may have the same content.
-If the opening of a project file fails, novelWriter will automatically try to open the ``.bak``
-file instead.
-
 
 Project Meta Data
 =================

novelwriter/constants.py

@@ -110,7 +110,6 @@ class nwFiles:
 
     # Project Root Files
     PROJ_FILE   = "nwProject.nwx"
-    PROJ_BACKUP = "nwProject.bak"
     PROJ_LOCK   = "nwProject.lock"
     TOC_TXT     = "ToC.txt"
 

novelwriter/core/projectxml.py

@@ -64,12 +64,11 @@ class XMLReadState(Enum):
 
     NO_ACTION       = 0
     NO_ERROR        = 1
-    PARSED_BACKUP   = 2
-    CANNOT_PARSE    = 3
-    NOT_NWX_FILE    = 4
-    UNKNOWN_VERSION = 5
-    PARSED_OK       = 6
-    WAS_LEGACY      = 7
+    CANNOT_PARSE    = 2
+    NOT_NWX_FILE    = 3
+    UNKNOWN_VERSION = 4
+    PARSED_OK       = 5
+    WAS_LEGACY      = 6
 
 # END Class XMLReadState
 
@@ -172,23 +171,9 @@ class ProjectXMLReader:
             xml = ET.parse(str(self._path))
             self._state = XMLReadState.NO_ERROR
         except Exception as exc:
-            # Trying to open backup file instead
             logger.error("Failed to parse project XML", exc_info=exc)
             self._state = XMLReadState.CANNOT_PARSE
-
-            backFile = self._path.with_suffix(".bak")
-            if backFile.is_file():
-                try:
-                    xml = ET.parse(str(backFile))
-                    self._state = XMLReadState.PARSED_BACKUP
-                    logger.info("Backup project file parsed")
-                except Exception as exc:
-                    logger.error("Failed to parse backup project XML", exc_info=exc)
-                    self._state = XMLReadState.CANNOT_PARSE
-                    return False
-            else:
-                self._state = XMLReadState.CANNOT_PARSE
-                return False
+            return False
 
         xRoot = xml.getroot()
         self._root = str(xRoot.tag)
@@ -555,22 +540,12 @@ class ProjectXMLWriter:
             xName.text = item["name"]
 
         # Write the XML tree to file
-        tempFile = self._path.with_suffix(".tmp")
-        backFile = self._path.with_suffix(".bak")
+        tmp = self._path.with_suffix(".tmp")
         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 self._path.exists():
-                self._path.replace(backFile)
-            tempFile.replace(self._path)
+            xml.write(tmp, encoding="utf-8", xml_declaration=True)
+            tmp.replace(self._path)
         except Exception as exc:
             self._error = exc
             return False

novelwriter/core/storage.py

@@ -307,7 +307,6 @@ class NWStorage:
         baseCont = basePath / "content"
         files = [
             (basePath / nwFiles.PROJ_FILE,   nwFiles.PROJ_FILE),
-            (basePath / nwFiles.PROJ_BACKUP, nwFiles.PROJ_BACKUP),
             (baseMeta / nwFiles.BUILDS_FILE, f"meta/{nwFiles.BUILDS_FILE}"),
             (baseMeta / nwFiles.INDEX_FILE,  f"meta/{nwFiles.INDEX_FILE}"),
             (baseMeta / nwFiles.OPTS_FILE,   f"meta/{nwFiles.OPTS_FILE}"),
@@ -463,6 +462,7 @@ class _LegacyStorage:
             path / "cache" / "prevBuild.json",         # Dropped in 2.1 Beta 1
             path / "cache",                            # Dropped in 2.1 Beta 1
             path / "ToC.json",                         # Dropped in 1.0 RC 1
+            path / "nwProject.bak",                    # Dropped in 2.3 Beta 1
         ]
         for item in remove:
             if item.exists():

tests/test_core/test_core_projectxml.py

@@ -57,7 +57,6 @@ def testCoreProjectXML_ReadCurrent(monkeypatch, tstPaths, fncPath):
     refFile = tstPaths.filesDir / "nwProject-1.5.nwx"
     tstFile = tstPaths.outDir / "ProjectXML_ReadCurrent.nwx"
     xmlFile = fncPath / "nwProject-1.5.nwx"
-    bakFile = fncPath / "nwProject-1.5.bak"
     outFile = fncPath / "nwProject.nwx"
 
     xmlReader = ProjectXMLReader(xmlFile)
@@ -71,16 +70,6 @@ def testCoreProjectXML_ReadCurrent(monkeypatch, tstPaths, fncPath):
     assert xmlReader.read(data, content) is False
     assert xmlReader.state == XMLReadState.CANNOT_PARSE
 
-    # Also add an invalid backup file
-    writeFile(bakFile, "")
-    assert xmlReader.read(data, content) is False
-    assert xmlReader.state == XMLReadState.CANNOT_PARSE
-
-    # Add a valid backup file, that is not novelWriter
-    writeFile(bakFile, "<xml/>")
-    assert xmlReader.read(data, content) is False
-    assert xmlReader.state == XMLReadState.NOT_NWX_FILE
-
     # Add a valid project file, that is not novelWriter
     writeFile(xmlFile, "<xml/>")
     assert xmlReader.read(data, content) is False