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|AS_IS = None|
Generic output formatting. Formatter objects transform an abstract flow of formatting events into specific output events on writer objects. Formatters manage several stack structures to allow various properties of a writer object to be changed and restored; writers need not be able to handle relative changes nor any sort of ``change back'' operation. Specific writer properties which may be controlled via formatter objects are horizontal alignment, font, and left margin indentations. A mechanism is provided which supports providing arbitrary, non-exclusive style settings to a writer as well. Additional interfaces facilitate formatting events which are not reversible, such as paragraph separation. Writer objects encapsulate device interfaces. Abstract devices, such as file formats, are supported as well as physical devices. The provided implementations all work with abstract devices. The interface makes available mechanisms for setting the properties which formatter objects manage and inserting data into the output.
|def formatter.test||(||file = ||)|
00427 00428 def test(file = None): 00429 w = DumbWriter() 00430 f = AbstractFormatter(w) 00431 if file is not None: 00432 fp = open(file) 00433 elif sys.argv[1:]: 00434 fp = open(sys.argv) 00435 else: 00436 fp = sys.stdin 00437 for line in fp: 00438 if line == '\n': 00439 f.end_paragraph(1) 00440 else: 00441 f.add_flowing_data(line) 00442 f.end_paragraph(0) 00443