added validator for project name check

pype/plugins/tvpaint/publish/validate_workfile_project_name.py

@@ -0,0 +1,37 @@
+import os
+import pyblish.api
+
+
+class ValidateWorkfileProjectName(pyblish.api.ContextPlugin):
+    """Validate project name stored in workfile metadata.
+
+    It is not possible to publish from different project than is set in
+    environment variable "AVALON_PROJECT".
+    """
+
+    label = "Validate Workfile Project Name"
+    order = pyblish.api.ValidatorOrder
+
+    def process(self, context):
+        workfile_context = context.data["workfile_context"]
+        workfile_project_name = workfile_context["project"]
+        env_project_name = os.environ["AVALON_PROJECT"]
+        if workfile_project_name == env_project_name:
+            self.log.info((
+                "Both workfile project and environment project are same. {}"
+            ).format(env_project_name))
+            return
+
+        # Raise an error
+        raise AssertionError((
+            # Short message
+            "Workfile from different Project ({})."
+            # Description what's wrong
+            " It is not possible to publish when TVPaint was launched in"
+            "context of different project. Current context project is \"{}\"."
+            " Launch TVPaint in context of project \"{}\" and then publish."
+        ).format(
+            workfile_project_name,
+            env_project_name,
+            workfile_project_name,
+        ))