Added and connected class to handle project backups

nw/project/backup.py

@@ -0,0 +1,66 @@
+# -*- coding: utf-8 -*-
+"""novelWriter Project Backup
+
+ novelWriter – Project Backup
+==============================
+ Class handling project backups
+
+ File History:
+ Created: 2019-06-16 [0.1.5]
+
+"""
+
+import logging
+import nw
+
+from os       import path, mkdir, listdir
+from shutil   import make_archive
+from datetime import datetime
+
+from nw.enum  import nwAlert
+
+logger = logging.getLogger(__name__)
+
+class NWBackup():
+
+    def __init__(self, theParent, theProject):
+
+        self.mainConf   = nw.CONFIG
+        self.theParent  = theParent
+        self.theProject = theProject
+
+        return
+
+    def zipIt(self):
+
+        if self.mainConf.backupPath is None:
+            self.theParent.makeAlert("Cannot backup project because no backup path is set.",nwAlert.WARN)
+            return False
+
+        if self.theProject.projName is None:
+            self.theParent.makeAlert("Cannot backup project because no project name is set.",nwAlert.WARN)
+            return False
+
+        logger.info("Backing up project")
+
+        archName = ""
+        for c in self.theProject.projName:
+            if c.isalnum():
+                archName += c
+
+        archName = archName+"_"+datetime.now().strftime("%Y%m%d-%H%M%S")
+        baseName = path.join(self.mainConf.backupPath, archName)
+
+        try:
+            make_archive(
+                baseName, "zip", 
+                root_dir = self.theProject.projPath,
+                base_dir = "."
+            )
+        except Exception as e:
+            self.theParent.makeAlert(["Could not write backup archive.",str(e)],nwAlert.ERROR)
+            return False
+
+        return True
+
+# END Class NWBackup