| %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) (int argc, char *argv[]) { |
| int i; |
| |
| if (TYPE($input) != T_ARRAY) { |
| SWIG_exception(SWIG_ValueError, "Expected an array"); |
| } |
| $1 = RARRAY_LEN($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 < $1; i++) { |
| VALUE s = rb_ary_entry($input,i); |
| if (TYPE(s) != T_STRING) { |
| free($2); |
| SWIG_exception(SWIG_ValueError, "List items must be strings"); |
| } |
| $2[i] = StringValuePtr(s); |
| } |
| $2[i] = 0; |
| } |
| |
| %typemap(freearg) (int argc, char *argv[]) { |
| free($2); |
| } |
| |
| extern int gcdmain(int argc, char *argv[]); |
| |
| %typemap(in) (char *bytes, int len) { |
| if (TYPE($input) != T_STRING) { |
| SWIG_exception(SWIG_ValueError, "Expected a string"); |
| } |
| $1 = StringValuePtr($input); |
| $2 = RSTRING_LEN($input); |
| } |
| |
| extern int count(char *bytes, int len, char c); |
| |
| |
| /* This example shows how to wrap a function that mutates a string */ |
| |
| %typemap(in) (char *str, int len) { |
| char *temp; |
| if (TYPE($input) != T_STRING) { |
| SWIG_exception(SWIG_ValueError,"Expected a string"); |
| } |
| temp = StringValuePtr($input); |
| $2 = RSTRING_LEN($input); |
| $1 = (char *) malloc($2+1); |
| memmove($1,temp,$2); |
| } |
| |
| /* Return the mutated string as a new object. */ |
| |
| %typemap(argout, fragment="output_helper") (char *str, int len) { |
| VALUE o; |
| o = rb_str_new($1,$2); |
| $result = output_helper($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); |
| |
| |