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128 lines
3.2 KiB
Python
128 lines
3.2 KiB
Python
"""Generate the skeleton for cStringIO as an example of framer."""
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from framer.bases import Module, Type
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from framer.member import member
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class cStringIO(Module):
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"""A simple fast partial StringIO replacement.
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This module provides a simple useful replacement for the StringIO
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module that is written in C. It does not provide the full
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generality of StringIO, but it provides enough for most
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applications and is especially useful in conjunction with the
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pickle module.
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Usage:
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from cStringIO import StringIO
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an_output_stream = StringIO()
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an_output_stream.write(some_stuff)
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...
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value = an_output_stream.getvalue()
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an_input_stream = StringIO(a_string)
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spam = an_input_stream.readline()
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spam = an_input_stream.read(5)
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an_input_stream.seek(0) # OK, start over
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spam = an_input_stream.read() # and read it all
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"""
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__file__ = "cStringIO.c"
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def StringIO(o):
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"""Return a StringIO-like stream for reading or writing"""
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StringIO.pyarg = "|O"
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class InputType(Type):
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"Simple type for treating strings as input file streams"
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abbrev = "input"
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struct = """\
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typedef struct {
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PyObject_HEAD
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char *buf;
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int pos;
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int size;
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PyObject *pbuf;
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} InputObject;
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"""
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def flush(self):
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"""Does nothing"""
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def getvalue(self):
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"""Get the string value.
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If use_pos is specified and is a true value, then the
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string returned will include only the text up to the
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current file position.
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"""
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def isatty(self):
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"""Always returns False"""
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def read(self, s):
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"""Return s characters or the rest of the string."""
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read.pyarg = "|i"
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def readline(self):
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"""Read one line."""
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def readlines(self, hint):
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"""Read all lines."""
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readlines.pyarg = "|i"
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def reset(self):
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"""Reset the file position to the beginning."""
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def tell(self):
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"""Get the current position."""
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def truncate(self, pos):
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"""Truncate the file at the current position."""
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truncate.pyarg = "|i"
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def seek(self, position, mode=0):
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"""Set the current position.
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The optional mode argument can be 0 for absolute, 1 for relative,
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and 2 for relative to EOF. The default is absolute.
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"""
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seek.pyarg = "i|i"
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def close(self):
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pass
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class OutputType(InputType):
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"Simple type for output strings."
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abbrev = "output"
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struct = """\
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typedef struct {
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PyObject_HEAD
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char *buf;
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int pos;
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int size;
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int softspace;
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} OutputObject;
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"""
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softspace = member()
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def close(self):
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"""Explicitly release resources."""
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def write(self, s):
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"""Write a string to the file."""
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# XXX Hack: writing None resets the buffer
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def writelines(self, lines):
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"""Write each string in lines."""
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cStringIO.gen()
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