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#include "jaro_winkler.h"
#include "distance.h"

VALUE rb_mJaroWinkler;

void Init_jaro_winkler(void){
  rb_mJaroWinkler = rb_define_module("JaroWinkler");
  rb_define_module_function(rb_mJaroWinkler, "c_distance", rb_distance, -1);
}

VALUE rb_distance(int argc, VALUE *argv, VALUE self){
  VALUE s1, s2, opt;
  rb_scan_args(argc, argv, "2:", &s1, &s2, &opt);
  Option *c_opt = option_new();
  if(TYPE(opt) == T_HASH){
    VALUE weight = rb_hash_aref(opt, ID2SYM(rb_intern("weight")));
    VALUE threshold = rb_hash_aref(opt, ID2SYM(rb_intern("threshold")));
    VALUE ignore_case = rb_hash_aref(opt, ID2SYM(rb_intern("ignore_case")));
    if(!NIL_P(weight)) c_opt->weight = NUM2DBL(weight);
    if(c_opt->weight > 0.25) rb_raise(rb_eRuntimeError, "Scaling factor should not exceed 0.25, otherwise the distance can become larger than 1.");
    if(!NIL_P(threshold)) c_opt->threshold = NUM2DBL(threshold);
    if(!NIL_P(ignore_case)) c_opt->ignore_case = (TYPE(ignore_case) == T_FALSE || NIL_P(ignore_case)) ? 0 : 1;
  }
  VALUE ret = rb_float_new(c_distance(StringValuePtr(s1), RSTRING_LEN(s1), StringValuePtr(s2), RSTRING_LEN(s2), c_opt));
  free(c_opt);
  return ret;
}

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
jaro_winkler-1.2.8	ext/jaro_winkler/jaro_winkler.c