Rename GCodeReader to GCodeProfileReader

The new name is more appropriate since it reads only the profiles from the g-code. In the future there might be some other plug-in that reads the actual g-code as for instance a mesh.

Contributes to issue CURA-34.

plugins/GCodeProfileReader/GCodeProfileReader.py

@@ -0,0 +1,46 @@
+# Copyright (c) 2015 Ultimaker B.V.
+# Cura is released under the terms of the AGPLv3 or higher.
+
+from UM.Application import Application #To get the current profile that should be updated with the settings from the g-code.
+from UM.Settings.ProfileReader import ProfileReader
+import re #Regular expressions for parsing escape characters in the settings.
+
+##  A class that reads profile data from g-code files.
+#
+#   It reads the profile data from g-code files and stores the profile as a new
+#   profile, and then immediately activates that profile.
+#   This class currently does not process the rest of the g-code in any way.
+class GCodeProfileReader(ProfileReader):
+    ##  Initialises the g-code reader as a mesh reader.
+    def __init__(self):
+        super().__init__()
+
+    ##  Reads a g-code file, loading the profile from it.
+    def read(self, file_name):
+        version = 1 #IF YOU CHANGE THIS FUNCTION IN A WAY THAT BREAKS REVERSE COMPATIBILITY, INCREMENT THIS VERSION NUMBER!
+        prefix = ";SETTING_" + str(version) + " "
+        
+        #Loading all settings from the file. They are all at the end, but Python has no reverse seek any more since Python3. TODO: Consider moving settings to the start?
+        serialised = "" #Will be filled with the serialised profile.
+        try:
+            with open(file_name) as f:
+                for line in f:
+                    if line.startswith(prefix):
+                        serialised += line[len(prefix):-1] #Remove the prefix and the newline from the line, and add it to the rest.
+        except IOError as e:
+            Logger.log("e", "Unable to open file %s for reading: %s", file_name, str(e))
+
+        #Unescape the serialised profile.
+        escape_characters = { #Which special characters (keys) are replaced by what escape character (values).
+                              #Note: The keys are regex strings. Values are not.
+            "\\\\": "\\", #The escape character.
+            "\\n": "\n",  #Newlines. They break off the comment.
+            "\\r": "\r"   #Carriage return. Windows users may need this for visualisation in their editors.
+        }
+        escape_characters = dict((re.escape(key), value) for key, value in escape_characters.items())
+        pattern = re.compile("|".join(escape_characters.keys()))
+        serialised = pattern.sub(lambda m: escape_characters[re.escape(m.group(0))], serialised) #Perform the replacement with a regular expression.
+        
+        #Apply the changes to the current profile.
+        profile = Application.getInstance().getMachineManager().getActiveProfile()
+        profile.unserialise(serialised)

plugins/GCodeProfileReader/__init__.py

@@ -0,0 +1,25 @@
+# Copyright (c) 2015 Ultimaker B.V.
+# Cura is released under the terms of the AGPLv3 or higher.
+
+from . import GCodeProfileReader
+
+from UM.i18n import i18nCatalog
+catalog = i18nCatalog("cura")
+
+def getMetaData():
+    return {
+        "plugin": {
+            "name": catalog.i18nc("@label", "GCode Profile Reader"),
+            "author": "Ultimaker",
+            "version": "1.0",
+            "description": catalog.i18nc("@info:whatsthis", "Provides support for importing profiles from g-code files."),
+            "api": 2
+        },
+        "profile_reader": {
+            "extension": "gcode",
+            "description": catalog.i18nc("@item:inlistbox", "G-code File")
+        }
+    }
+
+def register(app):
+    return { "profile_reader": GCodeProfileReader.GCodeProfileReader() }