[python][patch] Add options length parameter to value.string(...)

[Phil Muldoon]

This patch adds an optional length parameter to the value.string() 
method.  This allows partial string fetches, and string fetches that 
ignore embedded null characters in the C/C++ string case.  If the length 
parameter is omitted, the method will maintain the existing behaviour of 
fetching a string until a terminating null in the C/C++ case.

Regards

Phil


ChangeLog

2009-04-06  Phil Muldoon  <pmuldoon@redhat.com>

    * python/python-value.c (valpy_string): Parse length keyword. Use
    length keyword in LA_GET_STRING.
    * c-lang.c (c_get_string): If the length parameter is specified,
    use that.

testsuite/ChangeLog

2009-04-06  Phil Muldoon  <pmuldoon@redhat.com>

    * gdb.python/python-value.exp (test_value_in_inferior): Add
    variable length string fetch tests.
    * gdb.python/python-value.c (main): Add strings for string fetch tests.



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