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authorreinelt <reinelt@3ae390bd-cb1e-0410-b409-cd5a39f66f1f>2005-05-04 05:22:12 +0000
committerreinelt <reinelt@3ae390bd-cb1e-0410-b409-cd5a39f66f1f>2005-05-04 05:22:12 +0000
commit13238c06a2e3ea8feac96d02690a856b7a2a1d37 (patch)
treef0fa5cb9b620f6fe0adf48f54804f836467c3599
parent854e71168960439ed10d6ac057725dbe42f95929 (diff)
downloadlcd4linux-13238c06a2e3ea8feac96d02690a856b7a2a1d37.tar.gz
[lcd4linux @ 2005-05-04 05:22:12 by reinelt]
* replaced fprintf(stderr,... with error() * corrected a "dangling reference" memory problem * removed some PyErr_Print() spam * fixed a segmentation fault that occured when python module was not found * improved error messages git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@538 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
Diffstat (limited to '')
-rw-r--r--plugin_python.c59
1 files changed, 31 insertions, 28 deletions
diff --git a/plugin_python.c b/plugin_python.c
index 7b61096..d832808 100644
--- a/plugin_python.c
+++ b/plugin_python.c
@@ -1,4 +1,4 @@
-/* $Id: plugin_python.c,v 1.2 2005/05/03 11:13:24 reinelt Exp $
+/* $Id: plugin_python.c,v 1.3 2005/05/04 05:22:12 reinelt Exp $
*
* Python plugin
*
@@ -23,6 +23,14 @@
*
*
* $Log: plugin_python.c,v $
+ * Revision 1.3 2005/05/04 05:22:12 reinelt
+ * * replaced fprintf(stderr,... with error()
+ * * corrected a "dangling reference" memory problem
+ * * removed some PyErr_Print() spam
+ * * fixed a segmentation fault that occured when python module was not
+ * found
+ * * improved error messages
+ *
* Revision 1.2 2005/05/03 11:13:24 reinelt
* rearranged autoconf a bit,
* libX11 will be linked only if really needed (i.e. when the X11 driver has been selected)
@@ -38,19 +46,12 @@
*
* int plugin_init_python (void)
* adds a python interpreter
- *
+ *
*/
#include <Python.h>
-
-#include "config.h"
-
-#include <stdlib.h>
-#include <stdio.h>
-
#include "debug.h"
#include "plugin.h"
-#include "hash.h"
/*
* Executes a python function specified by function name and module.
@@ -58,10 +59,12 @@
* This method is more or less a copy of an example found in the python
* documentation. Kudos goes to Guido van Rossum and Fred L. Drake.
*
- * Returns a char* directly from PyString_AsString() !!! DO NOT DEALLOCATE !!!
+ * Fixme: this function should be able to accept and receive any types
+ * of arguments supported by the evaluator. Right now only strings are accepted.
*/
-static const char*
-pyt_exec_str(const char* module, const char* function, int argc, const char* argv[]) {
+
+static void
+pyt_exec_str(RESULT *result, const char* module, const char* function, int argc, const char* argv[]) {
PyObject *pName, *pModule, *pDict, *pFunc;
PyObject *pArgs, *pValue;
@@ -88,8 +91,9 @@ pyt_exec_str(const char* module, const char* function, int argc, const char* arg
if (!pValue) {
Py_DECREF(pArgs);
Py_DECREF(pModule);
- fprintf(stderr, "Cannot convert argument %s\n", argv[i]);
- return NULL;
+ error("Cannot convert argument \"%s\" to python format", argv[i]);
+ SetResult(&result, R_STRING, "");
+ return;
}
/* pValue reference stolen here: */
PyTuple_SetItem(pArgs, i, pValue);
@@ -98,40 +102,39 @@ pyt_exec_str(const char* module, const char* function, int argc, const char* arg
Py_DECREF(pArgs);
if (pValue != NULL) {
rv = PyString_AsString(pValue);
- //printf("Result of call: %s\n", rv);
+ SetResult(&result, R_STRING, rv);
Py_DECREF(pValue);
- return rv;
+ /* rv is now a 'dangling reference' */
+ return;
}
else {
Py_DECREF(pModule);
- PyErr_Print();
- fprintf(stderr,"Call failed\n");
- return NULL;
+ error("Python call failed (\"%s.%s\")", module, function);
+ SetResult(&result, R_STRING, "");
+ return;
}
/* pDict and pFunc are borrowed and must not be Py_DECREF-ed */
}
else {
- if (PyErr_Occurred())
- PyErr_Print();
- fprintf(stderr, "Cannot find function \"%s\"\n", argv[2]);
+ error("Can not find python function \"%s.%s\"", module, function);
}
Py_DECREF(pModule);
}
else {
- PyErr_Print();
- fprintf(stderr, "Failed to load \"%s\"\n", argv[1]);
- return NULL;
+ error("Failed to load python module \"%s\"", module);
}
- return NULL;
+ SetResult(&result, R_STRING, "");
+ return;
}
static int python_cleanup_responsibility = 0;
static void my_exec (RESULT *result, RESULT *module, RESULT *function, RESULT *arg )
{
+ /* Fixme: a plugin should be able to accept any number of arguments, don't know how
+ to code that (yet) */
const char* args[] = {R2S(arg)};
- const char* value = pyt_exec_str(R2S(module),R2S(function),1,args);
- SetResult(&result, R_STRING, value);
+ pyt_exec_str(result, R2S(module), R2S(function), 1, args);
}
int plugin_init_python (void)