/trunk/Examples/python/multimap/example.i
Swig | 121 lines | 91 code | 21 blank | 9 comment | 0 complexity | 474fc528d7ee6d68608aa9d3b543b212 MD5 | raw file
Possible License(s): LGPL-2.1, Cube, GPL-3.0, 0BSD, GPL-2.0
- /* File : example.i */
- %module example
- %{
- extern int gcd(int x, int y);
- extern int gcdmain(int argc, char *argv[]);
- extern int count(char *bytes, int len, char c);
- extern void capitalize (char *str, int len);
- extern void circle (double cx, double cy);
- extern int squareCubed (int n, int *OUTPUT);
- %}
- %include exception.i
- %include typemaps.i
- extern int gcd(int x, int y);
- %typemap(in,fragment="t_output_helper") (int argc, char *argv[]) {
- int i;
- if (!PyList_Check($input)) {
- SWIG_exception(SWIG_ValueError, "Expecting a list");
- }
- $1 = PyList_Size($input);
- if ($1 == 0) {
- SWIG_exception(SWIG_ValueError, "List must contain at least 1 element");
- }
- $2 = (char **) malloc(($1+1)*sizeof(char *));
- for (i = 0; i < $1; i++) {
- PyObject *s = PyList_GetItem($input,i);
- %#if PY_VERSION_HEX >= 0x03000000
- if (!PyUnicode_Check(s))
- %#else
- if (!PyString_Check(s))
- %#endif
- {
- free($2);
- SWIG_exception(SWIG_ValueError, "List items must be strings");
- }
- %#if PY_VERSION_HEX >= 0x03000000
- {
- int l;
- $2[i] = PyUnicode_AsStringAndSize(s, &l);
- }
- %#else
- $2[i] = PyString_AsString(s);
- %#endif
- }
- $2[i] = 0;
- }
- extern int gcdmain(int argc, char *argv[]);
- %typemap(in) (char *bytes, int len) {
- %#if PY_VERSION_HEX >= 0x03000000
- if (!PyUnicode_Check($input)) {
- PyErr_SetString(PyExc_ValueError,"Expected a string");
- return NULL;
- }
- $1 = PyUnicode_AsStringAndSize($input, &$2);
- %#else
- if (!PyString_Check($input)) {
- PyErr_SetString(PyExc_ValueError,"Expected a string");
- return NULL;
- }
- $1 = PyString_AsString($input);
- $2 = PyString_Size($input);
- %#endif
- }
- extern int count(char *bytes, int len, char c);
- /* This example shows how to wrap a function that mutates a string */
- /* Since str is modified, we make a copy of the Python object
- so that we don't violate it's mutability */
- %typemap(in) (char *str, int len) {
- %#if PY_VERSION_HEX >= 0x03000000
- $2 = PyUnicode_GetSize($input);
- $1 = (char *) malloc($2+1);
- memmove($1,PyUnicode_AsString($input),$2);
- %#else
- $2 = PyString_Size($input);
- $1 = (char *) malloc($2+1);
- memmove($1,PyString_AsString($input),$2);
- %#endif
- }
- /* Return the mutated string as a new object. The t_output_helper
- function takes an object and appends it to the output object
- to create a tuple */
- %typemap(argout) (char *str, int len) {
- PyObject *o;
- %#if PY_VERSION_HEX >= 0x03000000
- o = PyUnicode_FromStringAndSize($1,$2);
- %#else
- o = PyString_FromStringAndSize($1,$2);
- %#endif
- $result = t_output_helper($result,o);
- free($1);
- }
- extern void capitalize(char *str, int len);
- /* A multi-valued constraint. Force two arguments to lie
- inside the unit circle */
- %typemap(check) (double cx, double cy) {
- double a = $1*$1 + $2*$2;
- if (a > 1.0) {
- SWIG_exception(SWIG_ValueError,"$1_name and $2_name must be in unit circle");
- }
- }
- extern void circle(double cx, double cy);