Module: Wapiti::Native

Defined in:

ext/wapiti/native.c

Constant Summary

VERSION =

rb_str_new2(VERSION)

Class Method Summary

• .label ⇒ Object

  — Top-Level Utility Methods —.

• .wapiti ⇒ Object

  This function is a proxy for Wapiti’s main entry point.

Class Method Details

.label ⇒ Object

— Top-Level Utility Methods —

# File 'ext/wapiti/native.c', line 1182

static VALUE label(VALUE self __attribute__((__unused__)), VALUE rb_options) {
	if (strncmp("Wapiti::Options", rb_obj_classname(rb_options), 15) != 0) {
		rb_raise(cNativeError, "argument must be a native options instance");
	} 

	opt_t *options = get_options(rb_options);

	if (options->mode != 1) {
		rb_raise(cNativeError, "invalid options argument: mode should be set to 1 for labelling");
	}

	mdl_t *model = mdl_new(rdr_new(options->maxent));
	model->opt = options;

	dolabel(model);
	
	mdl_free(model);

	return Qnil;
}

.wapiti ⇒ Object

This function is a proxy for Wapiti’s main entry point.

# File 'ext/wapiti/native.c', line 1225

static VALUE wapiti(VALUE self __attribute__((__unused__)), VALUE arguments) {
	int result = -1, argc = 0;
	char **ap, *argv[18], *input, *tmp;
	
	Check_Type(arguments, T_STRING);
	tmp = StringValueCStr(arguments);
	
	// allocate space for argument vector
	input = (char*)malloc(strlen(tmp) + 8);
	
	// prepend command name
	strncpy(input, "wapiti ", 8);
	strncat(input, tmp, strlen(input) - 8);
	
	// remember allocation pointer
	tmp = input;
	
	// turn input string into argument vector (using
	// only the first seventeen tokens from input)
	for (ap = argv; (*ap = strsep(&input, " \t")) != (char*)0; ++argc) {
		if ((**ap != '\0') && (++ap >= &argv[18])) break;
	}
	
	// call main entry point
	result = wapiti_main(argc, argv);
	
	// free allocated memory
	free(tmp);
	
	return INT2FIX(result);
}