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#include <Python.h>
#include <stdlib.h>
#include "stringlist.h"
/** \defgroup string_list StringList
* \brief String list management class
*/
/** \addtogroup string_list
* @{
*/
struct StringList
{
char **list;
unsigned int count;
};
/**
* Creates a String list to use with the library.
* \param len the number of strings in the list.
*/
StringList* stringListCreate(size_t len)
{
StringList *ret = malloc(sizeof(StringList));
ret->count = len;
ret->list = malloc(sizeof(char*) * len);
return ret;
}
/**
* Inserts the string str in the list l at position pos.
* \return True if it succeeded, False if not.
*/
int stringListInsertAt(StringList *l, unsigned int pos, char *str)
{
if(!l || !l->list || l->count < pos)
return 0;
l->list[pos] = str;
return 1;
}
/**
* Get the number of strings in the list.
*
* \return the number of strings in the list
*/
unsigned int stringListCount(StringList *l)
{
if (!l)
return 0;
return l->count;
}
/**
* Get the String at position pos
* \return the String at position pos
*/
char* stringListGetAt(StringList *l, unsigned int pos)
{
if (!l || !l->list || pos >= l->count)
return NULL;
return l->list[pos];
}
/**
* \section internal
* @{
* \internal
*/
/**
* Converts a Python list object to a C String list
*/
StringList* listToCList(PyObject* list)
{
if (!list || !PyList_Check(list))
return NULL;
unsigned int len = PyList_Size(list);
StringList *ret = malloc(sizeof(StringList));
ret->count = len;
ret->list = malloc(sizeof(char*) * len);
for (unsigned int i = 0; i < len; i++)
{
//Item are copied so that the PyObject can be deleted after the call without
//destroying the data in the returned list.
PyObject *elem = PyList_GetItem(list, i);
ret->list[i] = malloc(sizeof(char) * (PyBytes_Size(elem) + 1));
strcpy(ret->list[i], PyBytes_AsString(elem));
}
return ret;
}
/**
* Converts a C String list to a Python List object
*/
PyObject* cListToPyList(StringList* list)
{
if (!list)
Py_RETURN_NONE;
PyObject *ret = PyList_New(list->count);
for(unsigned int i = 0; i < list->count; i++)
{
PyList_SetItem(ret, i, PyBytes_FromString(list->list[i]));
}
return ret;
}
/** @} */
/**
* Prints a C String list.
*/
void stringListPrint(StringList* list)
{
if (!list)
return;
for(unsigned int i = 0; i < list->count; i++)
{
printf("\"%s\"", list->list[i]);
// No coma after the last item.
if (i < list->count - 1)
printf(", ");
}
}
/**
* Frees a string list and it's data
*/
void stringListFree(StringList* list)
{
if (list && list->list)
{
for(unsigned int i = 0; i < list->count; i++)
{
free(list->list[i]);
}
free(list->list);
}
if (list)
free(list);
}
/** @} */
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