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added history file truncation based upon code from Johannes Zellner.

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Skip Montanaro 2000-07-19 16:54:53 +00:00
parent baf2663e44
commit 49bd24d4e4
1 changed files with 42 additions and 0 deletions
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42
Modules/readline.c
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@ -105,6 +105,7 @@ read_history_file(PyObject *self, PyObject *args)
return Py_None;
}
static int history_length = -1; /* do not truncate history by default */
static char doc_read_history_file[] = "\
read_history_file([filename]) -> None\n\
Load a readline history file.\n\
@ -121,6 +122,8 @@ write_history_file(PyObject *self, PyObject *args)
if (!PyArg_ParseTuple(args, "|z:write_history_file", &s))
return NULL;
errno = write_history(s);
if (!errno && history_length >= 0)
history_truncate_file(s, history_length);
if (errno)
return PyErr_SetFromErrno(PyExc_IOError);
Py_INCREF(Py_None);
@ -134,6 +137,43 @@ The default filename is ~/.history.\
";
static char set_history_length_doc[] = "\
set_history_length(length) -> None\n\
set the maximal number of items which will be written to\n\
the history file. A negative length is used to inhibit\n\
history truncation.\n\
";
static PyObject*
set_history_length(PyObject *self, PyObject *args)
{
int length = history_length;
PyObject* ob;
if (!PyArg_ParseTuple(args, "i:set_history_length", &length))
return NULL;
history_length = length;
Py_INCREF(Py_None);
return Py_None;
}
static char get_history_length_doc[] = "\
get_history_length() -> int\n\
return the current history length value.\n\
";
static PyObject*
get_history_length(PyObject *self, PyObject *args)
{
PyObject* ob;
if (!PyArg_ParseTuple(args, ":get_history_length"))
return NULL;
return Py_BuildValue("i", history_length);
}
/* Exported function to specify a word completer in Python */
static PyObject *completer = NULL;
@ -289,6 +329,8 @@ static struct PyMethodDef readline_methods[] =
{"read_init_file", read_init_file, 1, doc_read_init_file},
{"read_history_file", read_history_file, 1, doc_read_history_file},
{"write_history_file", write_history_file, 1, doc_write_history_file},
{"set_history_length", set_history_length, 1, set_history_length_doc},
{"get_history_length", get_history_length, 1, get_history_length_doc},
{"set_completer", set_completer, 1, doc_set_completer},
{"get_begidx", get_begidx, 0, doc_get_begidx},
{"get_endidx", get_endidx, 0, doc_get_endidx},