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#define _PCILIB_VIEW_TRANSFORM_C
#include <stdio.h>
#include <stdlib.h>
#include "pci.h"
#include "error.h"
#include "model.h"
#include "script.h"
static int pcilib_script_view_read(pcilib_t *ctx, pcilib_view_context_t *view_ctx, pcilib_register_value_t regval, pcilib_value_t *val) {
int err;
const pcilib_model_description_t *model_info = pcilib_get_model_description(ctx);
pcilib_script_view_description_t *v = (pcilib_script_view_description_t*)(model_info->views[view_ctx->view]);
//Initialize python script, if it has not initialized already.
if(!v->py_script_module)
{
if(!v->script_name)
{
pcilib_error("Invalid script name specified in XML property (NULL)");
return PCILIB_ERROR_INVALID_DATA;
}
//create path string to scripts
char* model_dir = getenv("PCILIB_MODEL_DIR");
char* model_path = malloc(strlen(model_dir) + strlen(ctx->model) + 2);
if (!model_path) return PCILIB_ERROR_MEMORY;
sprintf(model_path, "%s/%s", model_dir, ctx->model);
//set model path to python
PySys_SetPath(model_path);
free(model_path);
model_path = NULL;
//create path string to pcipywrap library
char* app_dir = getenv("APP_PATH");
char* pcipywrap_path;
if(app_dir)
{
pcipywrap_path = malloc(strlen(app_dir) + strlen("/pcilib"));
if (!pcipywrap_path) return PCILIB_ERROR_MEMORY;
sprintf(pcipywrap_path, "%s/%s", "/pcilib", ctx->model);
}
else
{
pcipywrap_path = malloc(strlen("./pcilib"));
if (!pcipywrap_path) return PCILIB_ERROR_MEMORY;
sprintf(pcipywrap_path, "%s", "./pcilib");
}
//set pcipywrap library path to python
PyObject* path = PySys_GetObject("path");
if(PyList_Append(path, PyString_FromString(pcipywrap_path)) == -1)
{
pcilib_error("Cant set pcipywrap library path to python.");
return PCILIB_ERROR_FAILED;
}
free(pcipywrap_path);
pcipywrap_path = NULL;
//extract module name from script name
char* py_module_name = strtok(v->script_name, ".");
if(!py_module_name)
{
pcilib_error("Invalid script name specified in XML property (%s)."
" Seems like name doesnt contains extension", v->script_name);
return PCILIB_ERROR_INVALID_DATA;
}
//import python script
v->py_script_module = PyImport_ImportModule(py_module_name);
if(!v->py_script_module)
{
printf("Error in import python module: ");
PyErr_Print();
return PCILIB_ERROR_INVALID_DATA;
}
}
//Initializing pcipywrap module if script use it
PyObject* dict = PyModule_GetDict(v->py_script_module);
if(PyDict_Contains(dict, PyString_FromString("pcipywrap")))
{
PyObject* pcipywrap_module = PyDict_GetItemString(dict, "pcipywrap");
if(!pcipywrap_module)
{
pcilib_error("Cant extract pcipywrap module from script dictionary");
return PCILIB_ERROR_FAILED;
}
//setting pcilib_t instance
PyObject_CallMethodObjArgs(pcipywrap_module,
PyUnicode_FromString("__setPcilib"),
PyByteArray_FromStringAndSize((const char*)&ctx, sizeof(pcilib_t*)),
NULL);
}
PyObject *ret = PyObject_CallMethod(v->py_script_module, "read_from_register", "()");
if (!ret)
{
printf("Python script error: ");
PyErr_Print();
return PCILIB_ERROR_FAILED;
}
if(PyInt_Check(ret))
{
err = pcilib_set_value_from_int(ctx, val, PyInt_AsLong(ret));
}
else
if(PyFloat_Check(ret))
err = pcilib_set_value_from_float(ctx, val, PyFloat_AsDouble(ret));
else
if(PyString_Check(ret))
err = pcilib_set_value_from_static_string(ctx, val, PyString_AsString(ret));
else
{
pcilib_error("Invalid return type in read_from_register() method. Return type should be int, float or string.");
return PCILIB_ERROR_NOTSUPPORTED;
}
if(err)
{
pcilib_error("Failed to convert python script return value to internal type: %i", err);
return err;
}
return 0;
}
void pcilib_script_view_free_description (pcilib_t *ctx, pcilib_view_description_t *view)
{
pcilib_script_view_description_t *v = (pcilib_script_view_description_t*)(view);
if(v->script_name)
{
free(v->script_name);
v->script_name = NULL;
}
if(v->py_script_module)
{
PyObject_Free(v->py_script_module);
v->py_script_module = NULL;
}
}
const pcilib_view_api_description_t pcilib_script_view_api =
{ PCILIB_VERSION, sizeof(pcilib_script_view_description_t), NULL, NULL, pcilib_script_view_free_description, pcilib_script_view_read, NULL};
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