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/* $OpenBSD: m_item_new.c,v 1.9 2010/01/12 23:22:08 nicm Exp $ */ |
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/**************************************************************************** |
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* Copyright (c) 1998-2005,2006 Free Software Foundation, Inc. * |
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* * |
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* Permission is hereby granted, free of charge, to any person obtaining a * |
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* copy of this software and associated documentation files (the * |
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* "Software"), to deal in the Software without restriction, including * |
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* without limitation the rights to use, copy, modify, merge, publish, * |
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* distribute, distribute with modifications, sublicense, and/or sell * |
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* copies of the Software, and to permit persons to whom the Software is * |
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* furnished to do so, subject to the following conditions: * |
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* * |
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* The above copyright notice and this permission notice shall be included * |
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* in all copies or substantial portions of the Software. * |
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* * |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * |
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * |
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * |
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* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * |
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * |
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * |
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* THE USE OR OTHER DEALINGS IN THE SOFTWARE. * |
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* * |
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* Except as contained in this notice, the name(s) of the above copyright * |
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* holders shall not be used in advertising or otherwise to promote the * |
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* sale, use or other dealings in this Software without prior written * |
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* authorization. * |
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****************************************************************************/ |
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/**************************************************************************** |
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* Author: Juergen Pfeifer, 1995,1997 * |
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****************************************************************************/ |
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/*************************************************************************** |
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* Module m_item_new * |
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* Create and destroy menu items * |
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* Set and get marker string for menu * |
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***************************************************************************/ |
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#include "menu.priv.h" |
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#if USE_WIDEC_SUPPORT |
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#if HAVE_WCTYPE_H |
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#include <wctype.h> |
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#endif |
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#endif |
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MODULE_ID("$Id: m_item_new.c,v 1.9 2010/01/12 23:22:08 nicm Exp $") |
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/*--------------------------------------------------------------------------- |
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| Facility : libnmenu |
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| Function : bool Is_Printable_String(const char *s) |
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| |
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| Description : Checks whether or not the string contains only printable |
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| characters. |
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| |
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| Return Values : TRUE - if string is printable |
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| FALSE - if string contains non-printable characters |
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+--------------------------------------------------------------------------*/ |
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static bool |
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Is_Printable_String(const char *s) |
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{ |
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int result = TRUE; |
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#if USE_WIDEC_SUPPORT |
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int count = mbstowcs(0, s, 0); |
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wchar_t *temp = 0; |
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assert(s); |
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if (count > 0 |
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&& (temp = typeCalloc(wchar_t, (2 + (unsigned)count))) != 0) |
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{ |
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int n; |
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mbstowcs(temp, s, (unsigned)count); |
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for (n = 0; n < count; ++n) |
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if (!iswprint((wint_t) temp[n])) |
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{ |
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result = FALSE; |
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break; |
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} |
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free(temp); |
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} |
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#else |
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assert(s); |
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while (*s) |
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{ |
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if (!isprint(UChar(*s))) |
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{ |
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result = FALSE; |
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break; |
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} |
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s++; |
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} |
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#endif |
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return result; |
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} |
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/*--------------------------------------------------------------------------- |
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| Facility : libnmenu |
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| Function : ITEM *new_item(char *name, char *description) |
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| |
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| Description : Create a new item with name and description. Return |
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| a pointer to this new item. |
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| N.B.: an item must(!) have a name. |
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| |
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| Return Values : The item pointer or NULL if creation failed. |
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+--------------------------------------------------------------------------*/ |
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NCURSES_EXPORT(ITEM *) |
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new_item(const char *name, const char *description) |
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{ |
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ITEM *item; |
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T((T_CALLED("new_item(\"%s\", \"%s\")"), |
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name ? name : "", |
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description ? description : "")); |
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if (!name || (*name == '\0') || !Is_Printable_String(name)) |
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{ |
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item = (ITEM *) 0; |
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SET_ERROR(E_BAD_ARGUMENT); |
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} |
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else |
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{ |
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item = (ITEM *) calloc(1, sizeof(ITEM)); |
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if (item) |
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{ |
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*item = _nc_Default_Item; /* hope we have struct assignment */ |
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item->name.length = strlen(name); |
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item->name.str = name; |
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if (description && (*description != '\0') && |
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Is_Printable_String(description)) |
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{ |
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item->description.length = strlen(description); |
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item->description.str = description; |
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} |
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else |
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{ |
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item->description.length = 0; |
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item->description.str = (char *)0; |
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} |
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} |
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else |
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SET_ERROR(E_SYSTEM_ERROR); |
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} |
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returnItem(item); |
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} |
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/*--------------------------------------------------------------------------- |
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| Facility : libnmenu |
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| Function : int free_item(ITEM *item) |
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| Description : Free the allocated storage for this item. |
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| N.B.: a connected item can't be freed. |
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| Return Values : E_OK - success |
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| E_BAD_ARGUMENT - invalid value has been passed |
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| E_CONNECTED - item is still connected to a menu |
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+--------------------------------------------------------------------------*/ |
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NCURSES_EXPORT(int) |
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free_item(ITEM * item) |
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{ |
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T((T_CALLED("free_item(%p)"), item)); |
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if (!item) |
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RETURN(E_BAD_ARGUMENT); |
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if (item->imenu) |
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RETURN(E_CONNECTED); |
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free(item); |
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RETURN(E_OK); |
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} |
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/*--------------------------------------------------------------------------- |
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| Facility : libnmenu |
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| Function : int set_menu_mark( MENU *menu, const char *mark ) |
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| |
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| Description : Set the mark string used to indicate the current |
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| item (single-valued menu) or the selected items |
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| (multi-valued menu). |
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| The mark argument may be NULL, in which case no |
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| marker is used. |
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| This might be a little bit tricky, because this may |
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| affect the geometry of the menu, which we don't allow |
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| if it is already posted. |
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| Return Values : E_OK - success |
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| E_BAD_ARGUMENT - an invalid value has been passed |
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| E_SYSTEM_ERROR - no memory to store mark |
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+--------------------------------------------------------------------------*/ |
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NCURSES_EXPORT(int) |
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set_menu_mark(MENU * menu, const char *mark) |
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{ |
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unsigned l; |
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T((T_CALLED("set_menu_mark(%p,%s)"), menu, _nc_visbuf(mark))); |
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if (mark && (*mark != '\0') && Is_Printable_String(mark)) |
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l = strlen(mark); |
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else |
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l = 0; |
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if (menu) |
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{ |
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char *old_mark = menu->mark; |
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unsigned short old_status = menu->status; |
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if (menu->status & _POSTED) |
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{ |
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/* If the menu is already posted, the geometry is fixed. Then |
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we can only accept a mark with exactly the same length */ |
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if (menu->marklen != (int)l) |
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RETURN(E_BAD_ARGUMENT); |
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} |
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menu->marklen = l; |
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if (l) |
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{ |
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menu->mark = (char *)malloc(l + 1); |
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if (menu->mark) |
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{ |
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strlcpy(menu->mark, mark, l+1); |
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if (menu != &_nc_Default_Menu) |
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menu->status |= _MARK_ALLOCATED; |
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} |
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else |
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{ |
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menu->mark = old_mark; |
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RETURN(E_SYSTEM_ERROR); |
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} |
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} |
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else |
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menu->mark = (char *)0; |
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if ((old_status & _MARK_ALLOCATED) && old_mark) |
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free(old_mark); |
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if (menu->status & _POSTED) |
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{ |
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_nc_Draw_Menu(menu); |
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_nc_Show_Menu(menu); |
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} |
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else |
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{ |
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/* Recalculate the geometry */ |
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_nc_Calculate_Item_Length_and_Width(menu); |
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} |
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} |
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else |
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{ |
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returnCode(set_menu_mark(&_nc_Default_Menu, mark)); |
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} |
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RETURN(E_OK); |
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} |
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/*--------------------------------------------------------------------------- |
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| Facility : libnmenu |
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| Function : char *menu_mark(const MENU *menu) |
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| Description : Return a pointer to the marker string |
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| Return Values : The marker string pointer or NULL if no marker defined |
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+--------------------------------------------------------------------------*/ |
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NCURSES_EXPORT(const char *) |
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menu_mark(const MENU * menu) |
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{ |
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T((T_CALLED("menu_mark(%p)"), menu)); |
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returnPtr(Normalize_Menu(menu)->mark); |
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} |
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/* m_item_new.c */ |