Added auto-reload to standalone server! Fixes #113. Thanks very much to Jason Huggins for the patch.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@266 bcc190cf-cafb-0310-a4f2-bffc1f526a37

1 files changed, 50 insertions, 0 deletions

diff --git a/django/utils/autoreload.py b/django/utils/autoreload.py
new file mode 100644
index 0000000000..140c83147c
--- /dev/null
+++ b/django/utils/autoreload.py
@@ -0,0 +1,50 @@
+# Autoreloading launcher.
+# Borrowed from Peter Hunt and the CherryPy project (http://www.cherrypy.org).
+# Some taken from Ian Bicking's Paste (http://pythonpaste.org/).
+
+import os, sys, thread, time
+
+RUN_RELOADER = True
+reloadFiles = []
+
+def reloader_thread():
+    mtimes = {}
+    while RUN_RELOADER:
+        for filename in filter(lambda v: v, map(lambda m: getattr(m, "__file__", None), sys.modules.values())) + reloadFiles:
+            if filename.endswith(".pyc"):
+                filename = filename[:-1]
+            mtime = os.stat(filename).st_mtime
+            if filename not in mtimes:
+                mtimes[filename] = mtime
+                continue
+            if mtime > mtimes[filename]:
+                sys.exit(3) # force reload
+        time.sleep(1)
+
+def restart_with_reloader():
+    while True:
+        args = [sys.executable] + sys.argv
+        if sys.platform == "win32":
+            args = ['"%s"' % arg for arg in args]
+        new_environ = os.environ.copy()
+        new_environ["RUN_MAIN"] = 'true'
+        exit_code = os.spawnve(os.P_WAIT, sys.executable, args, new_environ)
+        if exit_code != 3:
+            return exit_code
+
+def main(main_func, args=None, kwargs=None):
+    if os.environ.get("RUN_MAIN") == "true":
+        if args is None:
+            args = ()
+        if kwargs is None:
+            kwargs = {}
+        thread.start_new_thread(main_func, args, kwargs)
+        try:
+            reloader_thread()
+        except KeyboardInterrupt:
+            pass
+    else:
+        try:
+            sys.exit(restart_with_reloader())
+        except KeyboardInterrupt:
+            pass