721 lines
19 KiB
C
721 lines
19 KiB
C
/* gdb commands implemented in Python
|
||
|
||
Copyright (C) 2008-2014 Free Software Foundation, Inc.
|
||
|
||
This file is part of GDB.
|
||
|
||
This program is free software; you can redistribute it and/or modify
|
||
it under the terms of the GNU General Public License as published by
|
||
the Free Software Foundation; either version 3 of the License, or
|
||
(at your option) any later version.
|
||
|
||
This program is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
||
|
||
|
||
#include "defs.h"
|
||
#include "arch-utils.h"
|
||
#include "value.h"
|
||
#include "exceptions.h"
|
||
#include "python-internal.h"
|
||
#include "charset.h"
|
||
#include "gdbcmd.h"
|
||
#include "cli/cli-decode.h"
|
||
#include "completer.h"
|
||
#include "language.h"
|
||
|
||
/* Struct representing built-in completion types. */
|
||
struct cmdpy_completer
|
||
{
|
||
/* Python symbol name.
|
||
This isn't a const char * for Python 2.4's sake.
|
||
PyModule_AddIntConstant only takes a char *, sigh. */
|
||
char *name;
|
||
/* Completion function. */
|
||
completer_ftype *completer;
|
||
};
|
||
|
||
static const struct cmdpy_completer completers[] =
|
||
{
|
||
{ "COMPLETE_NONE", noop_completer },
|
||
{ "COMPLETE_FILENAME", filename_completer },
|
||
{ "COMPLETE_LOCATION", location_completer },
|
||
{ "COMPLETE_COMMAND", command_completer },
|
||
{ "COMPLETE_SYMBOL", make_symbol_completion_list_fn },
|
||
{ "COMPLETE_EXPRESSION", expression_completer },
|
||
};
|
||
|
||
#define N_COMPLETERS (sizeof (completers) / sizeof (completers[0]))
|
||
|
||
/* A gdb command. For the time being only ordinary commands (not
|
||
set/show commands) are allowed. */
|
||
struct cmdpy_object
|
||
{
|
||
PyObject_HEAD
|
||
|
||
/* The corresponding gdb command object, or NULL if the command is
|
||
no longer installed. */
|
||
struct cmd_list_element *command;
|
||
|
||
/* A prefix command requires storage for a list of its sub-commands.
|
||
A pointer to this is passed to add_prefix_command, and to add_cmd
|
||
for sub-commands of that prefix. If this Command is not a prefix
|
||
command, then this field is unused. */
|
||
struct cmd_list_element *sub_list;
|
||
};
|
||
|
||
typedef struct cmdpy_object cmdpy_object;
|
||
|
||
static PyTypeObject cmdpy_object_type
|
||
CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("cmdpy_object");
|
||
|
||
/* Constants used by this module. */
|
||
static PyObject *invoke_cst;
|
||
static PyObject *complete_cst;
|
||
|
||
|
||
|
||
/* Python function which wraps dont_repeat. */
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||
static PyObject *
|
||
cmdpy_dont_repeat (PyObject *self, PyObject *args)
|
||
{
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||
dont_repeat ();
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||
Py_RETURN_NONE;
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||
}
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||
|
||
|
||
|
||
/* Called if the gdb cmd_list_element is destroyed. */
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||
|
||
static void
|
||
cmdpy_destroyer (struct cmd_list_element *self, void *context)
|
||
{
|
||
cmdpy_object *cmd;
|
||
struct cleanup *cleanup;
|
||
|
||
cleanup = ensure_python_env (get_current_arch (), current_language);
|
||
|
||
/* Release our hold on the command object. */
|
||
cmd = (cmdpy_object *) context;
|
||
cmd->command = NULL;
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||
Py_DECREF (cmd);
|
||
|
||
/* We allocated the name, doc string, and perhaps the prefix
|
||
name. */
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||
xfree ((char *) self->name);
|
||
xfree (self->doc);
|
||
xfree (self->prefixname);
|
||
|
||
do_cleanups (cleanup);
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||
}
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||
|
||
/* Called by gdb to invoke the command. */
|
||
|
||
static void
|
||
cmdpy_function (struct cmd_list_element *command, char *args, int from_tty)
|
||
{
|
||
cmdpy_object *obj = (cmdpy_object *) get_cmd_context (command);
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||
PyObject *argobj, *ttyobj, *result;
|
||
struct cleanup *cleanup;
|
||
|
||
cleanup = ensure_python_env (get_current_arch (), current_language);
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||
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if (! obj)
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||
error (_("Invalid invocation of Python command object."));
|
||
if (! PyObject_HasAttr ((PyObject *) obj, invoke_cst))
|
||
{
|
||
if (obj->command->prefixname)
|
||
{
|
||
/* A prefix command does not need an invoke method. */
|
||
do_cleanups (cleanup);
|
||
return;
|
||
}
|
||
error (_("Python command object missing 'invoke' method."));
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||
}
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||
|
||
if (! args)
|
||
args = "";
|
||
argobj = PyUnicode_Decode (args, strlen (args), host_charset (), NULL);
|
||
if (! argobj)
|
||
{
|
||
gdbpy_print_stack ();
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||
error (_("Could not convert arguments to Python string."));
|
||
}
|
||
|
||
ttyobj = from_tty ? Py_True : Py_False;
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||
Py_INCREF (ttyobj);
|
||
result = PyObject_CallMethodObjArgs ((PyObject *) obj, invoke_cst, argobj,
|
||
ttyobj, NULL);
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||
Py_DECREF (argobj);
|
||
Py_DECREF (ttyobj);
|
||
|
||
if (! result)
|
||
{
|
||
PyObject *ptype, *pvalue, *ptraceback;
|
||
char *msg;
|
||
|
||
PyErr_Fetch (&ptype, &pvalue, &ptraceback);
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||
|
||
/* Try to fetch an error message contained within ptype, pvalue.
|
||
When fetching the error message we need to make our own copy,
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we no longer own ptype, pvalue after the call to PyErr_Restore. */
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||
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||
msg = gdbpy_exception_to_string (ptype, pvalue);
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||
make_cleanup (xfree, msg);
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||
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||
if (msg == NULL)
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||
{
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||
/* An error occurred computing the string representation of the
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error message. This is rare, but we should inform the user. */
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printf_filtered (_("An error occurred in a Python command\n"
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||
"and then another occurred computing the "
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"error message.\n"));
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gdbpy_print_stack ();
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||
}
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/* Don't print the stack for gdb.GdbError exceptions.
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It is generally used to flag user errors.
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||
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We also don't want to print "Error occurred in Python command"
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for user errors. However, a missing message for gdb.GdbError
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exceptions is arguably a bug, so we flag it as such. */
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||
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if (! PyErr_GivenExceptionMatches (ptype, gdbpy_gdberror_exc)
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|| msg == NULL || *msg == '\0')
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{
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PyErr_Restore (ptype, pvalue, ptraceback);
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gdbpy_print_stack ();
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if (msg != NULL && *msg != '\0')
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error (_("Error occurred in Python command: %s"), msg);
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else
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error (_("Error occurred in Python command."));
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||
}
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else
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{
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Py_XDECREF (ptype);
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Py_XDECREF (pvalue);
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Py_XDECREF (ptraceback);
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error ("%s", msg);
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}
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}
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Py_DECREF (result);
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do_cleanups (cleanup);
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}
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/* Called by gdb for command completion. */
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static VEC (char_ptr) *
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cmdpy_completer (struct cmd_list_element *command,
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const char *text, const char *word)
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{
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cmdpy_object *obj = (cmdpy_object *) get_cmd_context (command);
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||
PyObject *textobj, *wordobj, *resultobj = NULL;
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||
VEC (char_ptr) *result = NULL;
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struct cleanup *cleanup;
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||
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cleanup = ensure_python_env (get_current_arch (), current_language);
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if (! obj)
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error (_("Invalid invocation of Python command object."));
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||
if (! PyObject_HasAttr ((PyObject *) obj, complete_cst))
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{
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/* If there is no complete method, don't error -- instead, just
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say that there are no completions. */
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goto done;
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||
}
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||
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||
textobj = PyUnicode_Decode (text, strlen (text), host_charset (), NULL);
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if (! textobj)
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error (_("Could not convert argument to Python string."));
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||
wordobj = PyUnicode_Decode (word, strlen (word), host_charset (), NULL);
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||
if (! wordobj)
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error (_("Could not convert argument to Python string."));
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||
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||
resultobj = PyObject_CallMethodObjArgs ((PyObject *) obj, complete_cst,
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textobj, wordobj, NULL);
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Py_DECREF (textobj);
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Py_DECREF (wordobj);
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if (! resultobj)
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{
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/* Just swallow errors here. */
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PyErr_Clear ();
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goto done;
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||
}
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result = NULL;
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if (PyInt_Check (resultobj))
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{
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||
/* User code may also return one of the completion constants,
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thus requesting that sort of completion. */
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long value;
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||
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if (! gdb_py_int_as_long (resultobj, &value))
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{
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/* Ignore. */
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PyErr_Clear ();
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}
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else if (value >= 0 && value < (long) N_COMPLETERS)
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result = completers[value].completer (command, text, word);
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||
}
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else
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{
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PyObject *iter = PyObject_GetIter (resultobj);
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PyObject *elt;
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||
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if (iter == NULL)
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goto done;
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while ((elt = PyIter_Next (iter)) != NULL)
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||
{
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char *item;
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||
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if (! gdbpy_is_string (elt))
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||
{
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/* Skip problem elements. */
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Py_DECREF (elt);
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continue;
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}
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item = python_string_to_host_string (elt);
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Py_DECREF (elt);
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if (item == NULL)
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{
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/* Skip problem elements. */
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PyErr_Clear ();
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continue;
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||
}
|
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VEC_safe_push (char_ptr, result, item);
|
||
}
|
||
|
||
Py_DECREF (iter);
|
||
|
||
/* If we got some results, ignore problems. Otherwise, report
|
||
the problem. */
|
||
if (result != NULL && PyErr_Occurred ())
|
||
PyErr_Clear ();
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||
}
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||
done:
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||
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Py_XDECREF (resultobj);
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do_cleanups (cleanup);
|
||
|
||
return result;
|
||
}
|
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||
/* Helper for cmdpy_init which locates the command list to use and
|
||
pulls out the command name.
|
||
|
||
NAME is the command name list. The final word in the list is the
|
||
name of the new command. All earlier words must be existing prefix
|
||
commands.
|
||
|
||
*BASE_LIST is set to the final prefix command's list of
|
||
*sub-commands.
|
||
|
||
START_LIST is the list in which the search starts.
|
||
|
||
This function returns the xmalloc()d name of the new command. On
|
||
error sets the Python error and returns NULL. */
|
||
|
||
char *
|
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gdbpy_parse_command_name (const char *name,
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||
struct cmd_list_element ***base_list,
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||
struct cmd_list_element **start_list)
|
||
{
|
||
struct cmd_list_element *elt;
|
||
int len = strlen (name);
|
||
int i, lastchar;
|
||
char *prefix_text;
|
||
const char *prefix_text2;
|
||
char *result;
|
||
|
||
/* Skip trailing whitespace. */
|
||
for (i = len - 1; i >= 0 && (name[i] == ' ' || name[i] == '\t'); --i)
|
||
;
|
||
if (i < 0)
|
||
{
|
||
PyErr_SetString (PyExc_RuntimeError, _("No command name found."));
|
||
return NULL;
|
||
}
|
||
lastchar = i;
|
||
|
||
/* Find first character of the final word. */
|
||
for (; i > 0 && (isalnum (name[i - 1])
|
||
|| name[i - 1] == '-'
|
||
|| name[i - 1] == '_');
|
||
--i)
|
||
;
|
||
result = xmalloc (lastchar - i + 2);
|
||
memcpy (result, &name[i], lastchar - i + 1);
|
||
result[lastchar - i + 1] = '\0';
|
||
|
||
/* Skip whitespace again. */
|
||
for (--i; i >= 0 && (name[i] == ' ' || name[i] == '\t'); --i)
|
||
;
|
||
if (i < 0)
|
||
{
|
||
*base_list = start_list;
|
||
return result;
|
||
}
|
||
|
||
prefix_text = xmalloc (i + 2);
|
||
memcpy (prefix_text, name, i + 1);
|
||
prefix_text[i + 1] = '\0';
|
||
|
||
prefix_text2 = prefix_text;
|
||
elt = lookup_cmd_1 (&prefix_text2, *start_list, NULL, 1);
|
||
if (!elt || elt == (struct cmd_list_element *) -1)
|
||
{
|
||
PyErr_Format (PyExc_RuntimeError, _("Could not find command prefix %s."),
|
||
prefix_text);
|
||
xfree (prefix_text);
|
||
xfree (result);
|
||
return NULL;
|
||
}
|
||
|
||
if (elt->prefixlist)
|
||
{
|
||
xfree (prefix_text);
|
||
*base_list = elt->prefixlist;
|
||
return result;
|
||
}
|
||
|
||
PyErr_Format (PyExc_RuntimeError, _("'%s' is not a prefix command."),
|
||
prefix_text);
|
||
xfree (prefix_text);
|
||
xfree (result);
|
||
return NULL;
|
||
}
|
||
|
||
/* Object initializer; sets up gdb-side structures for command.
|
||
|
||
Use: __init__(NAME, COMMAND_CLASS [, COMPLETER_CLASS][, PREFIX]]).
|
||
|
||
NAME is the name of the command. It may consist of multiple words,
|
||
in which case the final word is the name of the new command, and
|
||
earlier words must be prefix commands.
|
||
|
||
COMMAND_CLASS is the kind of command. It should be one of the COMMAND_*
|
||
constants defined in the gdb module.
|
||
|
||
COMPLETER_CLASS is the kind of completer. If not given, the
|
||
"complete" method will be used. Otherwise, it should be one of the
|
||
COMPLETE_* constants defined in the gdb module.
|
||
|
||
If PREFIX is True, then this command is a prefix command.
|
||
|
||
The documentation for the command is taken from the doc string for
|
||
the python class. */
|
||
|
||
static int
|
||
cmdpy_init (PyObject *self, PyObject *args, PyObject *kw)
|
||
{
|
||
cmdpy_object *obj = (cmdpy_object *) self;
|
||
const char *name;
|
||
int cmdtype;
|
||
int completetype = -1;
|
||
char *docstring = NULL;
|
||
volatile struct gdb_exception except;
|
||
struct cmd_list_element **cmd_list;
|
||
char *cmd_name, *pfx_name;
|
||
static char *keywords[] = { "name", "command_class", "completer_class",
|
||
"prefix", NULL };
|
||
PyObject *is_prefix = NULL;
|
||
int cmp;
|
||
|
||
if (obj->command)
|
||
{
|
||
/* Note: this is apparently not documented in Python. We return
|
||
0 for success, -1 for failure. */
|
||
PyErr_Format (PyExc_RuntimeError,
|
||
_("Command object already initialized."));
|
||
return -1;
|
||
}
|
||
|
||
if (! PyArg_ParseTupleAndKeywords (args, kw, "si|iO",
|
||
keywords, &name, &cmdtype,
|
||
&completetype, &is_prefix))
|
||
return -1;
|
||
|
||
if (cmdtype != no_class && cmdtype != class_run
|
||
&& cmdtype != class_vars && cmdtype != class_stack
|
||
&& cmdtype != class_files && cmdtype != class_support
|
||
&& cmdtype != class_info && cmdtype != class_breakpoint
|
||
&& cmdtype != class_trace && cmdtype != class_obscure
|
||
&& cmdtype != class_maintenance && cmdtype != class_user)
|
||
{
|
||
PyErr_Format (PyExc_RuntimeError, _("Invalid command class argument."));
|
||
return -1;
|
||
}
|
||
|
||
if (completetype < -1 || completetype >= (int) N_COMPLETERS)
|
||
{
|
||
PyErr_Format (PyExc_RuntimeError,
|
||
_("Invalid completion type argument."));
|
||
return -1;
|
||
}
|
||
|
||
cmd_name = gdbpy_parse_command_name (name, &cmd_list, &cmdlist);
|
||
if (! cmd_name)
|
||
return -1;
|
||
|
||
pfx_name = NULL;
|
||
if (is_prefix != NULL)
|
||
{
|
||
cmp = PyObject_IsTrue (is_prefix);
|
||
if (cmp == 1)
|
||
{
|
||
int i, out;
|
||
|
||
/* Make a normalized form of the command name. */
|
||
pfx_name = xmalloc (strlen (name) + 2);
|
||
|
||
i = 0;
|
||
out = 0;
|
||
while (name[i])
|
||
{
|
||
/* Skip whitespace. */
|
||
while (name[i] == ' ' || name[i] == '\t')
|
||
++i;
|
||
/* Copy non-whitespace characters. */
|
||
while (name[i] && name[i] != ' ' && name[i] != '\t')
|
||
pfx_name[out++] = name[i++];
|
||
/* Add a single space after each word -- including the final
|
||
word. */
|
||
pfx_name[out++] = ' ';
|
||
}
|
||
pfx_name[out] = '\0';
|
||
}
|
||
else if (cmp < 0)
|
||
{
|
||
xfree (cmd_name);
|
||
return -1;
|
||
}
|
||
}
|
||
if (PyObject_HasAttr (self, gdbpy_doc_cst))
|
||
{
|
||
PyObject *ds_obj = PyObject_GetAttr (self, gdbpy_doc_cst);
|
||
|
||
if (ds_obj && gdbpy_is_string (ds_obj))
|
||
{
|
||
docstring = python_string_to_host_string (ds_obj);
|
||
if (docstring == NULL)
|
||
{
|
||
xfree (cmd_name);
|
||
xfree (pfx_name);
|
||
Py_DECREF (ds_obj);
|
||
return -1;
|
||
}
|
||
}
|
||
|
||
Py_XDECREF (ds_obj);
|
||
}
|
||
if (! docstring)
|
||
docstring = xstrdup (_("This command is not documented."));
|
||
|
||
Py_INCREF (self);
|
||
|
||
TRY_CATCH (except, RETURN_MASK_ALL)
|
||
{
|
||
struct cmd_list_element *cmd;
|
||
|
||
if (pfx_name)
|
||
{
|
||
int allow_unknown;
|
||
|
||
/* If we have our own "invoke" method, then allow unknown
|
||
sub-commands. */
|
||
allow_unknown = PyObject_HasAttr (self, invoke_cst);
|
||
cmd = add_prefix_cmd (cmd_name, (enum command_class) cmdtype,
|
||
NULL, docstring, &obj->sub_list,
|
||
pfx_name, allow_unknown, cmd_list);
|
||
}
|
||
else
|
||
cmd = add_cmd (cmd_name, (enum command_class) cmdtype, NULL,
|
||
docstring, cmd_list);
|
||
|
||
/* There appears to be no API to set this. */
|
||
cmd->func = cmdpy_function;
|
||
cmd->destroyer = cmdpy_destroyer;
|
||
|
||
obj->command = cmd;
|
||
set_cmd_context (cmd, self);
|
||
set_cmd_completer (cmd, ((completetype == -1) ? cmdpy_completer
|
||
: completers[completetype].completer));
|
||
}
|
||
if (except.reason < 0)
|
||
{
|
||
xfree (cmd_name);
|
||
xfree (docstring);
|
||
xfree (pfx_name);
|
||
Py_DECREF (self);
|
||
PyErr_Format (except.reason == RETURN_QUIT
|
||
? PyExc_KeyboardInterrupt : PyExc_RuntimeError,
|
||
"%s", except.message);
|
||
return -1;
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
|
||
|
||
/* Initialize the 'commands' code. */
|
||
|
||
int
|
||
gdbpy_initialize_commands (void)
|
||
{
|
||
int i;
|
||
|
||
cmdpy_object_type.tp_new = PyType_GenericNew;
|
||
if (PyType_Ready (&cmdpy_object_type) < 0)
|
||
return -1;
|
||
|
||
/* Note: alias and user are special; pseudo appears to be unused,
|
||
and there is no reason to expose tui or xdb, I think. */
|
||
if (PyModule_AddIntConstant (gdb_module, "COMMAND_NONE", no_class) < 0
|
||
|| PyModule_AddIntConstant (gdb_module, "COMMAND_RUNNING", class_run) < 0
|
||
|| PyModule_AddIntConstant (gdb_module, "COMMAND_DATA", class_vars) < 0
|
||
|| PyModule_AddIntConstant (gdb_module, "COMMAND_STACK", class_stack) < 0
|
||
|| PyModule_AddIntConstant (gdb_module, "COMMAND_FILES", class_files) < 0
|
||
|| PyModule_AddIntConstant (gdb_module, "COMMAND_SUPPORT",
|
||
class_support) < 0
|
||
|| PyModule_AddIntConstant (gdb_module, "COMMAND_STATUS", class_info) < 0
|
||
|| PyModule_AddIntConstant (gdb_module, "COMMAND_BREAKPOINTS",
|
||
class_breakpoint) < 0
|
||
|| PyModule_AddIntConstant (gdb_module, "COMMAND_TRACEPOINTS",
|
||
class_trace) < 0
|
||
|| PyModule_AddIntConstant (gdb_module, "COMMAND_OBSCURE",
|
||
class_obscure) < 0
|
||
|| PyModule_AddIntConstant (gdb_module, "COMMAND_MAINTENANCE",
|
||
class_maintenance) < 0
|
||
|| PyModule_AddIntConstant (gdb_module, "COMMAND_USER", class_user) < 0)
|
||
return -1;
|
||
|
||
for (i = 0; i < N_COMPLETERS; ++i)
|
||
{
|
||
if (PyModule_AddIntConstant (gdb_module, completers[i].name, i) < 0)
|
||
return -1;
|
||
}
|
||
|
||
if (gdb_pymodule_addobject (gdb_module, "Command",
|
||
(PyObject *) &cmdpy_object_type) < 0)
|
||
return -1;
|
||
|
||
invoke_cst = PyString_FromString ("invoke");
|
||
if (invoke_cst == NULL)
|
||
return -1;
|
||
complete_cst = PyString_FromString ("complete");
|
||
if (complete_cst == NULL)
|
||
return -1;
|
||
|
||
return 0;
|
||
}
|
||
|
||
|
||
|
||
static PyMethodDef cmdpy_object_methods[] =
|
||
{
|
||
{ "dont_repeat", cmdpy_dont_repeat, METH_NOARGS,
|
||
"Prevent command repetition when user enters empty line." },
|
||
|
||
{ 0 }
|
||
};
|
||
|
||
static PyTypeObject cmdpy_object_type =
|
||
{
|
||
PyVarObject_HEAD_INIT (NULL, 0)
|
||
"gdb.Command", /*tp_name*/
|
||
sizeof (cmdpy_object), /*tp_basicsize*/
|
||
0, /*tp_itemsize*/
|
||
0, /*tp_dealloc*/
|
||
0, /*tp_print*/
|
||
0, /*tp_getattr*/
|
||
0, /*tp_setattr*/
|
||
0, /*tp_compare*/
|
||
0, /*tp_repr*/
|
||
0, /*tp_as_number*/
|
||
0, /*tp_as_sequence*/
|
||
0, /*tp_as_mapping*/
|
||
0, /*tp_hash */
|
||
0, /*tp_call*/
|
||
0, /*tp_str*/
|
||
0, /*tp_getattro*/
|
||
0, /*tp_setattro*/
|
||
0, /*tp_as_buffer*/
|
||
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /*tp_flags*/
|
||
"GDB command object", /* tp_doc */
|
||
0, /* tp_traverse */
|
||
0, /* tp_clear */
|
||
0, /* tp_richcompare */
|
||
0, /* tp_weaklistoffset */
|
||
0, /* tp_iter */
|
||
0, /* tp_iternext */
|
||
cmdpy_object_methods, /* tp_methods */
|
||
0, /* tp_members */
|
||
0, /* tp_getset */
|
||
0, /* tp_base */
|
||
0, /* tp_dict */
|
||
0, /* tp_descr_get */
|
||
0, /* tp_descr_set */
|
||
0, /* tp_dictoffset */
|
||
cmdpy_init, /* tp_init */
|
||
0, /* tp_alloc */
|
||
};
|
||
|
||
|
||
|
||
/* Utility to build a buildargv-like result from ARGS.
|
||
This intentionally parses arguments the way libiberty/argv.c:buildargv
|
||
does. It splits up arguments in a reasonable way, and we want a standard
|
||
way of parsing arguments. Several gdb commands use buildargv to parse their
|
||
arguments. Plus we want to be able to write compatible python
|
||
implementations of gdb commands. */
|
||
|
||
PyObject *
|
||
gdbpy_string_to_argv (PyObject *self, PyObject *args)
|
||
{
|
||
PyObject *py_argv;
|
||
const char *input;
|
||
|
||
if (!PyArg_ParseTuple (args, "s", &input))
|
||
return NULL;
|
||
|
||
py_argv = PyList_New (0);
|
||
if (py_argv == NULL)
|
||
return NULL;
|
||
|
||
/* buildargv uses NULL to represent an empty argument list, but we can't use
|
||
that in Python. Instead, if ARGS is "" then return an empty list.
|
||
This undoes the NULL -> "" conversion that cmdpy_function does. */
|
||
|
||
if (*input != '\0')
|
||
{
|
||
char **c_argv = gdb_buildargv (input);
|
||
int i;
|
||
|
||
for (i = 0; c_argv[i] != NULL; ++i)
|
||
{
|
||
PyObject *argp = PyString_FromString (c_argv[i]);
|
||
|
||
if (argp == NULL
|
||
|| PyList_Append (py_argv, argp) < 0)
|
||
{
|
||
Py_XDECREF (argp);
|
||
Py_DECREF (py_argv);
|
||
freeargv (c_argv);
|
||
return NULL;
|
||
}
|
||
Py_DECREF (argp);
|
||
}
|
||
|
||
freeargv (c_argv);
|
||
}
|
||
|
||
return py_argv;
|
||
}
|