Remove submodule, just put Dependencies in ./libs

libs/migrate/versioning/script/sql.py

@@ -0,0 +1,49 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+import logging
+import shutil
+
+from migrate.versioning.script import base
+from migrate.versioning.template import Template
+
+
+log = logging.getLogger(__name__)
+
+class SqlScript(base.BaseScript):
+    """A file containing plain SQL statements."""
+
+    @classmethod
+    def create(cls, path, **opts):
+        """Create an empty migration script at specified path
+        
+        :returns: :class:`SqlScript instance <migrate.versioning.script.sql.SqlScript>`"""
+        cls.require_notfound(path)
+
+        src = Template(opts.pop('templates_path', None)).get_sql_script(theme=opts.pop('templates_theme', None))
+        shutil.copy(src, path)
+        return cls(path)
+
+    # TODO: why is step parameter even here?
+    def run(self, engine, step=None, executemany=True):
+        """Runs SQL script through raw dbapi execute call"""
+        text = self.source()
+        # Don't rely on SA's autocommit here
+        # (SA uses .startswith to check if a commit is needed. What if script
+        # starts with a comment?)
+        conn = engine.connect()
+        try:
+            trans = conn.begin()
+            try:
+                # HACK: SQLite doesn't allow multiple statements through
+                # its execute() method, but it provides executescript() instead
+                dbapi = conn.engine.raw_connection()
+                if executemany and getattr(dbapi, 'executescript', None):
+                    dbapi.executescript(text)
+                else:
+                    conn.execute(text)
+                trans.commit()
+            except:
+                trans.rollback()
+                raise
+        finally:
+            conn.close()