def _read_code(self): """ Returns the Python compiled code object for this file, if it is available, or None if it is not. """ if self.fileType == FTPythonCompiled: # It's a pyc file; just read it directly. pycVfile = vfs.getFile(self.filename, False) if pycVfile: return self._loadPyc(pycVfile, None) return None elif self.fileType == FTCompiledModule: return None # It's a .py file (or an __init__.py file; same thing). Read # the .pyc file if it is available and current; otherwise read # the .py file and compile it. pycFilename = Filename(self.filename) pycFilename.setExtension(pycExtension) pycVfile = vfs.getFile(pycFilename, False) t_pyc = None if pycVfile: t_pyc = pycVfile.getTimestamp() code = None if t_pyc and t_pyc >= self.timestamp: code = self._loadPyc(pycVfile, self.timestamp) if not code: source = self._read_source() filename = Filename(self.filename) filename.setExtension('py') code = self._compile(filename, source) return code
def _compile(self, filename, source): """ Compiles the Python source code to a code object and attempts to write it to an appropriate .pyc file. """ if source and source[-1] != '\n': source = source + '\n' code = __builtin__.compile(source, filename.cStr(), 'exec') # try to cache the compiled code pycFilename = Filename(filename) pycFilename.setExtension(pycExtension) try: f = open(pycFilename, 'wb') except IOError: pass else: f.write('\0\0\0\0') f.write(struct.pack('<I', self.timestamp)) f.write(marshal.dumps(code)) f.flush() f.seek(0, 0) f.write(imp.get_magic()) f.close() return code
def _compile(self, filename, source): """ Compiles the Python source code to a code object and attempts to write it to an appropriate .pyc file. """ if source and source[-1] != '\n': source = source + '\n' code = __builtin__.compile(source, filename.cStr(), 'exec') # try to cache the compiled code pycFilename = Filename(filename) pycFilename.setExtension(pycExtension) try: f = open(pycFilename, 'wb') except IOError: pass else: f.write('\0\0\0\0') f.write(struct.pack('<I', self.timestamp)) f.write(marshal.dumps(code)) f.flush() f.seek(0, 0) f.write(imp.get_magic()) f.close() return code
def _read_code(self): """ Returns the Python compiled code object for this file, if it is available, or None if it is not. """ if self.fileType == FTPythonCompiled: # It's a pyc file; just read it directly. pycVfile = vfs.getFile(self.filename, False) if pycVfile: return self._loadPyc(pycVfile, None) return None elif self.fileType == FTCompiledModule: return None # It's a .py file (or an __init__.py file; same thing). Read # the .pyc file if it is available and current; otherwise read # the .py file and compile it. pycFilename = Filename(self.filename) pycFilename.setExtension(pycExtension) pycVfile = vfs.getFile(pycFilename, False) t_pyc = None if pycVfile: t_pyc = pycVfile.getTimestamp() code = None if t_pyc and t_pyc >= self.timestamp: code = self._loadPyc(pycVfile, self.timestamp) if not code: source = self._read_source() filename = Filename(self.filename) filename.setExtension('py') code = self._compile(filename, source) return code
def _read_source(self): """ Returns the Python source for this file, if it is available, or None if it is not. """ if self.fileType == FTPythonCompiled or \ self.fileType == FTCompiledModule: return None filename = Filename(self.filename) filename.setExtension('py') try: file = open(filename, 'rU') except IOError: return None return file.read()
def _read_source(self): """ Returns the Python source for this file, if it is available, or None if it is not. """ if self.fileType == FTPythonCompiled or \ self.fileType == FTCompiledModule: return None filename = Filename(self.filename) filename.setExtension('py') try: file = open(filename, 'rU') except IOError: return None return file.read()
def find_module(self, fullname): basename = fullname.split('.')[-1] path = Filename(self.dir_path, basename) # First, look for Python files. filename = Filename(path) filename.setExtension('py') vfile = vfs.getFile(filename, True) if vfile: return VFSLoader(self, vfile, filename, FTPythonSource) # If there's no .py file, but there's a .pyc file, load that # anyway. filename = Filename(path) filename.setExtension(pycExtension) vfile = vfs.getFile(filename, True) if vfile: return VFSLoader(self, vfile, filename, FTPythonCompiled) # Look for a compiled C/C++ module. for desc in imp.get_suffixes(): if desc[2] != imp.C_EXTENSION: continue filename = Filename(path) filename.setExtension(desc[0][1:]) vfile = vfs.getFile(filename, True) if vfile: return VFSLoader(self, vfile, filename, FTCompiledModule, desc=desc) # Finally, consider a package, i.e. a directory containing # __init__.py. filename = Filename(path, '__init__.py') vfile = vfs.getFile(filename, True) if vfile: return VFSLoader(self, vfile, filename, FTPythonSource, packagePath=path) filename = Filename(path, '__init__.' + pycExtension) vfile = vfs.getFile(filename, True) if vfile: return VFSLoader(self, vfile, filename, FTPythonCompiled, packagePath=path) return None
def find_module(self, fullname): basename = fullname.split('.')[-1] path = Filename(self.dir_path, basename) # First, look for Python files. filename = Filename(path) filename.setExtension('py') vfile = vfs.getFile(filename, True) if vfile: return VFSLoader(self, vfile, filename, FTPythonSource) # If there's no .py file, but there's a .pyc file, load that # anyway. filename = Filename(path) filename.setExtension(pycExtension) vfile = vfs.getFile(filename, True) if vfile: return VFSLoader(self, vfile, filename, FTPythonCompiled) # Look for a compiled C/C++ module. for desc in imp.get_suffixes(): if desc[2] != imp.C_EXTENSION: continue filename = Filename(path) filename.setExtension(desc[0][1:]) vfile = vfs.getFile(filename, True) if vfile: return VFSLoader(self, vfile, filename, FTCompiledModule, desc = desc) # Finally, consider a package, i.e. a directory containing # __init__.py. filename = Filename(path, '__init__.py') vfile = vfs.getFile(filename, True) if vfile: return VFSLoader(self, vfile, filename, FTPythonSource, packagePath = path) filename = Filename(path, '__init__.' + pycExtension) vfile = vfs.getFile(filename, True) if vfile: return VFSLoader(self, vfile, filename, FTPythonCompiled, packagePath = path) return None