bygfoot/src/option.c

#include "main.h"
#include "option.h"
#include "variables.h"

/** Return the string going with the option
    named 'name'.
    @param name The name of the option.
    @return The string_value of the option.
    @see #Option */
gchar*
option_string(const gchar *name, OptionList *optionlist)
{
    gpointer element = g_datalist_get_data(&optionlist->datalist, name);
    
    if(element == NULL)
	g_warning("option_string: option named %s not found\n", name);
    else
	return ((Option*)element)->string_value->str;

    main_exit_program(EXIT_OPTION_NOT_FOUND, NULL);

    return NULL;
}

/** Return the GString pointer going with the option. */
GString*
option_string_pointer(const gchar *name, OptionList *optionlist)
{
    gpointer element = g_datalist_get_data(&optionlist->datalist, name);
    
    if(element == NULL)
	g_warning("option_string: option named %s not found\n", name);
    else
	return ((Option*)element)->string_value;

    main_exit_program(EXIT_OPTION_NOT_FOUND, NULL);

    return NULL;
}

/** Return the integer going with the option
    named 'name'.
    @param name The name of the option.
    @return The value of the option.
    @see #Option */
gint
option_int(const gchar *name, OptionList *optionlist)
{
    gpointer element = g_datalist_get_data(&optionlist->datalist, name);
    
    if(element == NULL)
	g_warning("option_int: option named %s not found\n", name);
    else
	return ((Option*)element)->value;

    main_exit_program(EXIT_OPTION_NOT_FOUND, NULL);

    return -1;
}

/** Return the address of an options variable. */
gint*
option_int_pointer(const gchar *name, OptionList *optionlist)
{
    gpointer element = g_datalist_get_data(&optionlist->datalist, name);
    
    if(element == NULL)
	g_warning("option_int: option named %s not found\n", name);
    else
	return &((Option*)element)->value;

    main_exit_program(EXIT_OPTION_NOT_FOUND, NULL);

    return NULL;
}

/** Return the int going with the option named 'name'
    cast to float and divided by 1000.
    @param name The name of the option.
    @return The value of the option cast to float and divided by 1000.
    @see #Option */
gfloat
option_float(const gchar *name, OptionList *optionlist)
{
    gpointer element = g_datalist_get_data(&optionlist->datalist, name);
    
    if(element == NULL)
	g_warning("option_float: option named %s not found\n", name);
    else
	return (gfloat)((Option*)element)->value / 10000;

    main_exit_program(EXIT_OPTION_NOT_FOUND, NULL);

    return -1;
}

/** Change the value of a string option in the array.
    @param name The name of the option.
    @param option_array The option array.
    @param new_value The value we set. */
void
option_set_string(const gchar *name, OptionList *optionlist, const gchar *new_value)
{
    gpointer element = g_datalist_get_data(&optionlist->datalist, name);
    
    if(element == NULL)
	g_warning("option_set_string: option named %s not found\n", name);
    else
	g_string_printf(((Option*)element)->string_value, "%s", new_value);
}

/** Change the value of an int option in the array.
    @param name The name of the option.
    @param option_array The option array.
    @param new_value The value we set. */
void
option_set_int(const gchar *name, OptionList *optionlist, gint new_value)
{
    gpointer element = g_datalist_get_data(&optionlist->datalist, name);
    
    if(element == NULL)
	g_warning("option_set_int: option named %s not found\n", name);
    else
	((Option*)element)->value = new_value;
}


/** Add an option to the optionlist with the given values. */
void
option_add(OptionList *optionlist, const gchar *name, gint int_value, const gchar *string_value)
{
    gint i;
    Option new;
    gpointer element = NULL;

    if(optionlist->list != NULL)
	g_datalist_get_data(&optionlist->datalist, name);
    
    if(element != NULL)
    {
	g_warning("Option named '%s' already contained in optionlist.", name);
	main_exit_program(EXIT_GENERAL, NULL);
    }

    new.name = g_string_new(name);
    new.value = int_value;
    new.string_value = (string_value == NULL) ? NULL : g_string_new(string_value);

    if(optionlist->list == NULL)
    {
	optionlist->list = g_array_new(FALSE, FALSE, sizeof(Option));
	g_datalist_init(&optionlist->datalist);
    }

    g_array_append_val(optionlist->list, new);
    
    for(i=0;i<optionlist->list->len;i++)
	g_datalist_set_data(&optionlist->datalist, g_array_index(optionlist->list, Option, i).name->str,
			    &g_array_index(optionlist->list, Option, i));
}