findsel.c

早期freebsd实现

#include <X11/copyright.h>

/* $Header: FindSel.c,v 1.2 87/12/20 12:05:07 rws Exp $ */
/* Copyright    Massachusetts Institute of Technology    1985	*/

/*
 * XMenu:	MIT Project Athena, X Window system menu package
 *
 *	XMenuFindSelection - Find the first selection in a pane who's
 *			     label matches a particular string.
 *
 *	Author:		Tony Della Fera, DEC
 *			January 22, 1986
 *
 */

#include "XMenuInt.h"

int
XMenuFindSelection(menu, p_num, label)
    register XMenu *menu;
    int p_num;
    register char *label;
{
    register XMPane *p_ptr;
    register XMSelect *s_ptr;
    register int i = 0;

    /*
     * Check for NULL pointers!
     */
    if (label == NULL) {
	_XMErrorCode = XME_ARG_BOUNDS;
	return(XM_FAILURE);
    }

    /*
     * Find the right pane.
     */
    p_ptr = _XMGetPanePtr(menu, p_num);
    if (p_ptr == NULL) return(XM_FAILURE);

    /*
     * Find the right selection.
     */
    for (
	s_ptr = p_ptr->s_list->next;
	s_ptr != p_ptr->s_list;
	s_ptr = s_ptr->next
    ){
	if (s_ptr->label_length == 0) {
	    if (*label == '\0') {
		_XMErrorCode = XME_NO_ERROR;
		return (i);
	    }
	}
	else {
	    if (strncmp (label, s_ptr->label, s_ptr->label_length) == 0) {
		_XMErrorCode = XME_NO_ERROR;
		return (i);
	    }
	}
	i++;
    }

    /*
     * If we get here then we have not found
     * a match.
     */
    _XMErrorCode = XME_S_NOT_FOUND;
    return (XM_FAILURE);
}