コード例 #1
0
    def _compile(self, filename, source):
        """ Compiles the Python source code to a code object and
        attempts to write it to an appropriate .pyc file.  May raise
        SyntaxError or other errors generated by the compiler. """

        if source and source[-1] != '\n':
            source = source + '\n'
        code = __builtin__.compile(source, filename.toOsSpecific(), 'exec')

        # try to cache the compiled code
        pycFilename = Filename(filename)
        pycFilename.setExtension(compiledExtensions[0])
        try:
            f = open(pycFilename.toOsSpecific(), '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
コード例 #2
0
    def _read_code(self):
        """ Returns the Python compiled code object for this file, if
        it is available, or None if it is not.  May raise IOError,
        ValueError, SyntaxError, or a number of other errors generated
        by the low-level system. """

        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)
            raise IOError, 'Could not read %s' % (self.filename)

        elif self.fileType == FTExtensionModule:
            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.
        t_pyc = None
        for ext in compiledExtensions:
            pycFilename = Filename(self.filename)
            pycFilename.setExtension(ext)
            pycVfile = vfs.getFile(pycFilename, False)
            if pycVfile:
                t_pyc = pycVfile.getTimestamp()
                break

        code = None
        if t_pyc and t_pyc >= self.timestamp:
            try:
                code = self._loadPyc(pycVfile, self.timestamp)
            except ValueError:
                code = None

        if not code:
            source = self._read_source()
            filename = Filename(self.filename)
            filename.setExtension('py')
            code = self._compile(filename, source)

        return code
コード例 #3
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    def _read_source(self):
        """ Returns the Python source for this file, if it is
        available, or None if it is not.  May raise IOError. """

        if self.fileType == FTPythonCompiled or \
           self.fileType == FTExtensionModule:
            return None

        filename = Filename(self.filename)
        filename.setExtension('py')
        filename.setText()
        vfile = vfs.getFile(filename)
        if not vfile:
            raise IOError
        return vfile.readFile(True)
コード例 #4
0
    def find_module(self, fullname, path = None):
        if path is None:
            dir_path = self.dir_path
        else:
            dir_path = path
        #print >>sys.stderr, "find_module(%s), dir_path = %s" % (fullname, dir_path)
        basename = fullname.split('.')[-1]
        path = Filename(dir_path, basename)

        # First, look for Python files.
        filename = Filename(path)
        filename.setExtension('py')
        vfile = vfs.getFile(filename, True)
        if vfile:
            return VFSLoader(dir_path, vfile, filename, FTPythonSource)

        # If there's no .py file, but there's a .pyc file, load that
        # anyway.
        for ext in compiledExtensions:
            filename = Filename(path)
            filename.setExtension(ext)
            vfile = vfs.getFile(filename, True)
            if vfile:
                return VFSLoader(dir_path, vfile, filename, FTPythonCompiled)

        # Look for a C/C++ extension 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(dir_path, vfile, filename, FTExtensionModule,
                                 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(dir_path, vfile, filename, FTPythonSource,
                             packagePath = path)
        for ext in compiledExtensions:
            filename = Filename(path, '__init__.' + ext)
            vfile = vfs.getFile(filename, True)
            if vfile:
                return VFSLoader(dir_path, vfile, filename, FTPythonCompiled,
                                 packagePath = path)

        #print >>sys.stderr, "not found."
        return None
コード例 #5
0
 def getdata(self, path):
     path = Filename(self.dir_path, Filename.fromOsSpecific(path))
     vfile = vfs.getFile(path)
     if not vfile:
         raise IOError
     return vfile.readFile(True)