| /* 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"); |
| } |
| $1 = (int)PyList_Size($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 |
| { |
| PyObject *utf8str = PyUnicode_AsUTF8String(s); |
| const char *cstr; |
| if (!utf8str) { |
| SWIG_fail; |
| } |
| cstr = PyBytes_AsString(utf8str); |
| $2[i] = strdup(cstr); |
| Py_DECREF(utf8str); |
| } |
| %#else |
| $2[i] = PyString_AsString(s); |
| %#endif |
| } |
| $2[i] = 0; |
| } |
| |
| %typemap(freearg) (int argc, char *argv[]) { |
| %#if PY_VERSION_HEX >= 0x03000000 |
| int i; |
| for (i = 0; i < $1; i++) { |
| free($2[i]); |
| } |
| %#endif |
| } |
| |
| extern int gcdmain(int argc, char *argv[]); |
| |
| %typemap(in) (char *bytes, int len) { |
| |
| %#if PY_VERSION_HEX >= 0x03000000 |
| char *cstr; |
| Py_ssize_t len; |
| PyObject *utf8str; |
| if (!PyUnicode_Check($input)) { |
| PyErr_SetString(PyExc_ValueError,"Expected a string"); |
| SWIG_fail; |
| } |
| utf8str = PyUnicode_AsUTF8String($input); |
| if (!utf8str) { |
| SWIG_fail; |
| } |
| PyBytes_AsStringAndSize(utf8str, &cstr, &len); |
| $1 = strncpy((char *)malloc(len+1), cstr, (size_t)len); |
| $2 = (int)len; |
| Py_DECREF(utf8str); |
| %#else |
| if (!PyString_Check($input)) { |
| PyErr_SetString(PyExc_ValueError,"Expected a string"); |
| SWIG_fail; |
| } |
| $1 = PyString_AsString($input); |
| $2 = (int)PyString_Size($input); |
| %#endif |
| } |
| |
| %typemap(freearg) (char *bytes, int len) { |
| %#if PY_VERSION_HEX >= 0x03000000 |
| free($1); |
| %#endif |
| } |
| |
| extern int count(char *bytes, int len, char c); |
| |
| |
| /* This example shows how to wrap a function that mutates a string */ |
| |
| /* Since str is modified, we make a copy of the Python object |
| so that we don't violate its mutability */ |
| |
| %typemap(in) (char *str, int len) { |
| %#if PY_VERSION_HEX >= 0x03000000 |
| char *cstr; |
| Py_ssize_t len; |
| PyObject *utf8str = PyUnicode_AsUTF8String($input); |
| if (!utf8str) { |
| SWIG_fail; |
| } |
| PyBytes_AsStringAndSize(utf8str, &cstr, &len); |
| $1 = strncpy((char *)malloc(len+1), cstr, (size_t)len); |
| $2 = (int)len; |
| Py_DECREF(utf8str); |
| %#else |
| $2 = (int)PyString_Size($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); |
| |
| |