move standalone script to become a plugin offering "--genscript",

adjust paths accordingly and add CHANGELOG entry.

--HG--
branch : trunk

py/impl/test/pluginmanager.py

@@ -8,7 +8,7 @@ from py.impl.test.outcome import Skipped
 
 default_plugins = (
     "default runner capture terminal mark skipping tmpdir monkeypatch "
-    "recwarn pdb pastebin unittest helpconfig nose assertion").split()
+    "recwarn pdb pastebin unittest helpconfig nose assertion genscript").split()
 
 def check_old_use(mod, modname):
     clsname = modname[len('pytest_'):].capitalize() + "Plugin" 

py/plugin/pytest_genscript.py

@@ -0,0 +1,63 @@
+#! /usr/bin/env python
+
+import os
+import zlib
+import base64
+import sys
+try:
+    import pickle
+except Importerror:
+    import cPickle as pickle
+
+def pytest_addoption(parser):
+    group = parser.getgroup("general")
+    group.addoption("--genscript", action="store", default=None, 
+        dest="genscript", metavar="path", 
+        help="create standalone py.test script at given target path.")
+
+def pytest_configure(config):
+    genscript = config.getvalue("genscript")
+    if genscript:
+        import py
+        mydir = py.path.local(__file__).dirpath()
+        infile = mydir.join("standalonetemplate.py")
+        pybasedir = py.path.local(py.__file__).dirpath().dirpath()
+        main(pybasedir, outfile=genscript, infile=infile)
+        raise SystemExit(0)
+
+def main(pybasedir, outfile, infile):
+    os.chdir(str(pybasedir))
+    outfile = str(outfile)
+    infile = str(infile)
+    files = []
+    for dirpath, dirnames, filenames in os.walk("py"):
+        for f in filenames:
+            if not f.endswith(".py"):
+                continue
+                
+            fn = os.path.join(dirpath, f)
+            files.append(fn)
+
+    name2src = {}
+    for f in files:
+        k = f.replace("/", ".")[:-3]
+        name2src[k] = open(f, "rb").read()
+
+    data = pickle.dumps(name2src, 2)
+    data = zlib.compress(data, 9)
+    data = base64.encodestring(data)
+
+    exe = open(infile, "rb").read()
+    exe = exe.replace("@SOURCES@", data)
+
+    open(outfile, "wb").write(exe)
+    os.chmod(outfile, 493)  # 0755
+    sys.stdout.write("generated standalone py.test at %r, have fun!\n" % outfile)
+
+if __name__=="__main__":
+    dn = os.path.dirname
+    here = os.path.abspath(dn(__file__)) # py/plugin/
+    pybasedir = dn(dn(here))
+    outfile = os.path.join(os.getcwd(), "py.test-standalone")
+    infile = os.path.join(here, 'standalonetemplate.py')
+    main(pybasedir, outfile, infile)

py/plugin/standalonetemplate.py

@@ -0,0 +1,64 @@
+#! /usr/bin/env python
+
+sources = """
+@SOURCES@"""
+
+import sys
+import base64
+import zlib
+import imp
+
+if sys.version_info >= (3,0):
+    exec("def do_exec(co, loc): exec(co, loc)\n")
+    import pickle
+    sources = sources.encode("ascii") # ensure bytes 
+    sources = pickle.loads(zlib.decompress(base64.decodebytes(sources)))
+else:
+    import cPickle as pickle
+    exec("def do_exec(co, loc): exec co in loc\n")
+    sources = pickle.loads(zlib.decompress(base64.decodestring(sources)))
+
+class DictImporter(object):
+    sources = sources
+    def find_module(self, fullname, path=None):
+        if fullname in self.sources:
+            return self
+        if fullname+'.__init__' in self.sources:
+            return self
+        return None
+
+    def load_module(self, fullname):
+        # print "load_module:",  fullname
+        from types import ModuleType
+        try:
+            s = self.sources[fullname]
+            is_pkg = False
+        except KeyError:
+            s = self.sources[fullname+'.__init__']
+            is_pkg = True
+        
+        co = compile(s, fullname, 'exec')
+        module = sys.modules.setdefault(fullname, ModuleType(fullname))
+        module.__file__ = "%s/%s" % (__file__, fullname)
+        module.__loader__ = self
+        if is_pkg:
+            module.__path__ = [fullname]
+            
+        do_exec(co, module.__dict__)
+        return sys.modules[fullname]
+
+    def get_source(self, name):
+        res = self.sources.get(name)
+        if res is None:
+            res = self.sources.get(name+'.__init__')
+        return res
+
+
+
+importer = DictImporter()
+
+sys.meta_path.append(importer)
+
+if __name__ == "__main__":
+    import py
+    py.cmdline.pytest()