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authorPeter Wemm <peter@FreeBSD.org>1999-08-24 01:06:48 +0000
committerPeter Wemm <peter@FreeBSD.org>1999-08-24 01:06:48 +0000
commit0e3d540892016a47f6a68ec9ba2879d35ce5f7c2 (patch)
treead214c5b2c8142ad6dc6d2ce3a9c83e6317d7f77 /contrib/ncurses/menu/m_item_new.c
downloadsrc-0e3d540892016a47f6a68ec9ba2879d35ce5f7c2.tar.gz
src-0e3d540892016a47f6a68ec9ba2879d35ce5f7c2.zip
Import unmodified (but trimmed) ncurses 5.0 prerelease 990821.vendor/ncurses/5.0-19990821
This contains the full eti (panel, form, menu) extensions. bmake glue to follow. Obtained from: ftp://ftp.clark.net/pub/dickey/ncurses
Notes
Notes: svn path=/vendor/ncurses/dist/; revision=50276 svn path=/vendor/ncurses/5.0-19990821/; revision=50278; tag=vendor/ncurses/5.0-19990821
Diffstat (limited to 'contrib/ncurses/menu/m_item_new.c')
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diff --git a/contrib/ncurses/menu/m_item_new.c b/contrib/ncurses/menu/m_item_new.c
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+/****************************************************************************
+ * Copyright (c) 1998 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 <juergen.pfeifer@gmx.net> 1995,1997 *
+ ****************************************************************************/
+
+/***************************************************************************
+* Module m_item_new *
+* Create and destroy menu items *
+* Set and get marker string for menu *
+***************************************************************************/
+
+#include "menu.priv.h"
+
+MODULE_ID("$Id: m_item_new.c,v 1.11 1999/05/16 17:28:49 juergen 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)
+{
+ assert(s);
+ while(*s)
+ {
+ if (!isprint((unsigned char)*s))
+ return FALSE;
+ s++;
+ }
+ return TRUE;
+}
+
+/*---------------------------------------------------------------------------
+| 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.
++--------------------------------------------------------------------------*/
+ITEM *new_item(const char *name, const char *description)
+{
+ ITEM *item;
+
+ 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 );
+ }
+ return(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
++--------------------------------------------------------------------------*/
+int free_item(ITEM * 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
++--------------------------------------------------------------------------*/
+int set_menu_mark(MENU * menu, const char * mark)
+{
+ int l;
+
+ 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 != 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
+ {
+ return 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
++--------------------------------------------------------------------------*/
+const char *menu_mark(const MENU * menu)
+{
+ return Normalize_Menu( menu )->mark;
+}
+
+/* m_item_new.c */