File read-only check supports YAML

[mudpy.git] / lib / mudpy / data.py

diff --git a/lib/mudpy/data.py b/lib/mudpy/data.py
index ad171d8..9ee09e1 100644 (file)
--- a/lib/mudpy/data.py
+++ b/lib/mudpy/data.py
@@ -13,6 +13,7 @@ import stat
 import sys
 
 import mudpy
+import yaml
 
 
 class DataFile:
@@ -22,12 +23,106 @@ class DataFile:
     def __init__(self, filename, universe):
         self.filename = filename
         self.universe = universe
+        self.data = {}
         self.load()
 
     def load(self):
         """Read a file and create elements accordingly."""
-        self.data = configparser.RawConfigParser()
+        # TODO(fungi): remove this indirection after the YAML transition
+        if self.filename.endswith('.yaml'):
+            self.load_yaml()
+        else:
+            self.load_mpy()
+
+    def load_yaml(self):
+        """Read a file and create elements accordingly."""
+        # TODO(fungi): remove this parameter after the YAML transition
+        self._format = 'yaml'
         self.modified = False
+        try:
+            self.data = yaml.load(open(self.filename))
+        except FileNotFoundError:
+            # it's normal if the file is one which doesn't exist yet
+            try:
+                mudpy.misc.log("Couldn't read %s file." % self.filename, 6)
+            except NameError:
+                # happens when we're not far enough along in the init process
+                pass
+        if not hasattr(self.universe, "files"):
+            self.universe.files = {}
+        self.universe.files[self.filename] = self
+        includes = []
+        if "__control__" in self.data:
+            if "include_files" in self.data["__control__"]:
+                for included in makelist(
+                        self.data["__control__"]["include_files"]):
+                    included = find_file(
+                        included,
+                        relative=self.filename,
+                        universe=self.universe)
+                    if included not in includes:
+                        includes.append(included)
+            if "include_dirs" in self.data["__control__"]:
+                for included in [
+                    os.path.join(x, "__init__.mpy") for x in makelist(
+                        self.data["__control__"]["include_dirs"]
+                    )
+                ]:
+                    included = find_file(
+                        included,
+                        relative=self.filename,
+                        universe=self.universe
+                    )
+                    if included not in includes:
+                        includes.append(included)
+            if "default_files" in self.data["__control__"]:
+                origins = makedict(
+                    self.data["__control__"]["default_files"]
+                )
+                for key in origins.keys():
+                    origins[key] = find_file(
+                        origins[key],
+                        relative=self.filename,
+                        universe=self.universe
+                    )
+                    if origins[key] not in includes:
+                        includes.append(origins[key])
+                    self.universe.default_origins[key] = origins[key]
+                    if key not in self.universe.categories:
+                        self.universe.categories[key] = {}
+            if "private_files" in self.data["__control__"]:
+                for item in makelist(
+                    self.data["__control__"]["private_files"]
+                ):
+                    item = find_file(
+                        item,
+                        relative=self.filename,
+                        universe=self.universe
+                    )
+                    if item not in includes:
+                        includes.append(item)
+                    if item not in self.universe.private_files:
+                        self.universe.private_files.append(item)
+        for element in self.data:
+            if element != "__control__":
+                mudpy.misc.Element(element, self.universe, self.filename)
+        for include_file in includes:
+            if not os.path.isabs(include_file):
+                include_file = find_file(
+                    include_file,
+                    relative=self.filename,
+                    universe=self.universe
+                )
+            if (include_file not in self.universe.files or not
+                    self.universe.files[include_file].is_writeable()):
+                DataFile(include_file, self.universe)
+
+    # TODO(fungi): remove this method after the YAML transition
+    def load_mpy(self):
+        """Read a file and create elements accordingly."""
+        self._format = 'mpy'
+        self.modified = False
+        self.data = configparser.RawConfigParser()
         if os.access(self.filename, os.R_OK):
             self.data.read(self.filename)
         if not hasattr(self.universe, "files"):
@@ -100,6 +195,7 @@ class DataFile:
                     self.universe.files[include_file].is_writeable()):
                 DataFile(include_file, self.universe)
 
+    # TODO(fungi): this should support writing YAML
     def save(self):
         """Write the data, if necessary."""
 
@@ -177,11 +273,18 @@ class DataFile:
 
     def is_writeable(self):
         """Returns True if the __control__ read_only is False."""
-        return not self.data.has_option(
-            "__control__", "read_only"
-        ) or not self.data.getboolean(
-            "__control__", "read_only"
-        )
+        # TODO(fungi): remove this indirection after the YAML transition
+        if self._format == "yaml":
+            try:
+                return not self.data["__control__"].get("read_only", False)
+            except KeyError:
+                return True
+        else:
+            return not self.data.has_option(
+                "__control__", "read_only"
+            ) or not self.data.getboolean(
+                "__control__", "read_only"
+            )
 
 
 def find_file(