/**************************************************************************** * Copyright (c) 1998-2005,2006 Free Software Foundation, Inc. * * * * Permission is hereby granted, free of charge, to any person obtaining a * * copy of this software and associated documentation files (the * * "Software"), to deal in the Software without restriction, including * * without limitation the rights to use, copy, modify, merge, publish, * * distribute, distribute with modifications, sublicense, and/or sell * * copies of the Software, and to permit persons to whom the Software is * * furnished to do so, subject to the following conditions: * * * * The above copyright notice and this permission notice shall be included * * in all copies or substantial portions of the Software. * * * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * * * * Except as contained in this notice, the name(s) of the above copyright * * holders shall not be used in advertising or otherwise to promote the * * sale, use or other dealings in this Software without prior written * * authorization. * ****************************************************************************/ /**************************************************************************** * Author: Juergen Pfeifer, 1995,1997 * ****************************************************************************/ /*************************************************************************** * Module m_item_new * * Create and destroy menu items * * Set and get marker string for menu * ***************************************************************************/ #include "menu.priv.h" #if USE_WIDEC_SUPPORT #if HAVE_WCTYPE_H #include #endif #endif MODULE_ID("$Id: m_item_new.c,v 1.27 2006/12/17 19:47:09 tom Exp $") /*--------------------------------------------------------------------------- | Facility : libnmenu | Function : bool Is_Printable_String(const char *s) | | Description : Checks whether or not the string contains only printable | characters. | | Return Values : TRUE - if string is printable | FALSE - if string contains non-printable characters +--------------------------------------------------------------------------*/ static bool Is_Printable_String(const char *s) { int result = TRUE; #if USE_WIDEC_SUPPORT int count = mbstowcs(0, s, 0); wchar_t *temp = 0; assert(s); if (count > 0 && (temp = typeCalloc(wchar_t, (2 + (unsigned)count))) != 0) { int n; mbstowcs(temp, s, (unsigned)count); for (n = 0; n < count; ++n) if (!iswprint((wint_t) temp[n])) { result = FALSE; break; } free(temp); } #else assert(s); while (*s) { if (!isprint(UChar(*s))) { result = FALSE; break; } s++; } #endif return result; } /*--------------------------------------------------------------------------- | Facility : libnmenu | Function : ITEM *new_item(char *name, char *description) | | Description : Create a new item with name and description. Return | a pointer to this new item. | N.B.: an item must(!) have a name. | | Return Values : The item pointer or NULL if creation failed. +--------------------------------------------------------------------------*/ NCURSES_EXPORT(ITEM *) new_item(const char *name, const char *description) { ITEM *item; T((T_CALLED("new_item(\"%s\", \"%s\")"), name ? name : "", description ? description : "")); if (!name || (*name == '\0') || !Is_Printable_String(name)) { item = (ITEM *) 0; SET_ERROR(E_BAD_ARGUMENT); } else { item = (ITEM *) calloc(1, sizeof(ITEM)); if (item) { *item = _nc_Default_Item; /* hope we have struct assignment */ item->name.length = strlen(name); item->name.str = name; if (description && (*description != '\0') && Is_Printable_String(description)) { item->description.length = strlen(description); item->description.str = description; } else { item->description.length = 0; item->description.str = (char *)0; } } else SET_ERROR(E_SYSTEM_ERROR); } returnItem(item); } /*--------------------------------------------------------------------------- | Facility : libnmenu | Function : int free_item(ITEM *item) | | Description : Free the allocated storage for this item. | N.B.: a connected item can't be freed. | | Return Values : E_OK - success | E_BAD_ARGUMENT - invalid value has been passed | E_CONNECTED - item is still connected to a menu +--------------------------------------------------------------------------*/ NCURSES_EXPORT(int) free_item(ITEM * item) { T((T_CALLED("free_item(%p)"), item)); if (!item) RETURN(E_BAD_ARGUMENT); if (item->imenu) RETURN(E_CONNECTED); free(item); RETURN(E_OK); } /*--------------------------------------------------------------------------- | Facility : libnmenu | Function : int set_menu_mark( MENU *menu, const char *mark ) | | Description : Set the mark string used to indicate the current | item (single-valued menu) or the selected items | (multi-valued menu). | The mark argument may be NULL, in which case no | marker is used. | This might be a little bit tricky, because this may | affect the geometry of the menu, which we don't allow | if it is already posted. | | Return Values : E_OK - success | E_BAD_ARGUMENT - an invalid value has been passed | E_SYSTEM_ERROR - no memory to store mark +--------------------------------------------------------------------------*/ NCURSES_EXPORT(int) set_menu_mark(MENU * menu, const char *mark) { unsigned l; T((T_CALLED("set_menu_mark(%p,%s)"), menu, _nc_visbuf(mark))); if (mark && (*mark != '\0') && Is_Printable_String(mark)) l = strlen(mark); else l = 0; if (menu) { char *old_mark = menu->mark; unsigned short old_status = menu->status; if (menu->status & _POSTED) { /* If the menu is already posted, the geometry is fixed. Then we can only accept a mark with exactly the same length */ if (menu->marklen != (int)l) RETURN(E_BAD_ARGUMENT); } menu->marklen = l; if (l) { menu->mark = (char *)malloc(l + 1); if (menu->mark) { strcpy(menu->mark, mark); if (menu != &_nc_Default_Menu) menu->status |= _MARK_ALLOCATED; } else { menu->mark = old_mark; RETURN(E_SYSTEM_ERROR); } } else menu->mark = (char *)0; if ((old_status & _MARK_ALLOCATED) && old_mark) free(old_mark); if (menu->status & _POSTED) { _nc_Draw_Menu(menu); _nc_Show_Menu(menu); } else { /* Recalculate the geometry */ _nc_Calculate_Item_Length_and_Width(menu); } } else { returnCode(set_menu_mark(&_nc_Default_Menu, mark)); } RETURN(E_OK); } /*--------------------------------------------------------------------------- | Facility : libnmenu | Function : char *menu_mark(const MENU *menu) | | Description : Return a pointer to the marker string | | Return Values : The marker string pointer or NULL if no marker defined +--------------------------------------------------------------------------*/ NCURSES_EXPORT(const char *) menu_mark(const MENU * menu) { T((T_CALLED("menu_mark(%p)"), menu)); returnPtr(Normalize_Menu(menu)->mark); } /* m_item_new.c */