1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
|
/***************************************************************************
* COPYRIGHT NOTICE *
****************************************************************************
* ncurses is copyright (C) 1992-1995 *
* Zeyd M. Ben-Halim *
* zmbenhal@netcom.com *
* Eric S. Raymond *
* esr@snark.thyrsus.com *
* *
* Permission is hereby granted to reproduce and distribute ncurses *
* by any means and for any fee, whether alone or as part of a *
* larger distribution, in source or in binary form, PROVIDED *
* this notice is included with any such distribution, and is not *
* removed from any of its header files. Mention of ncurses in any *
* applications linked with it is highly appreciated. *
* *
* ncurses comes AS IS with no warranty, implied or expressed. *
* *
***************************************************************************/
/***************************************************************************
* Module menu_item_new *
* Create and destroy menu items *
* Set and get marker string for menu
***************************************************************************/
#include "menu.priv.h"
/*---------------------------------------------------------------------------
| 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(char *name, 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.str = name;
item->name.length = strlen(name);
item->description.str = description;
if (description && Is_Printable_String(description))
item->description.length = strlen(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, 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
+--------------------------------------------------------------------------*/
int set_menu_mark(MENU * menu, char * mark)
{
int l;
if ( mark && *mark && Is_Printable_String(mark) )
l = strlen(mark);
else
l = 0;
if ( menu )
{
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->mark = l ? mark : (char *)0;
menu->marklen = l;
if (menu->status & _POSTED)
{
_nc_Draw_Menu( menu );
_nc_Show_Menu( menu );
}
else
{
/* Recalculate the geometry */
_nc_Calculate_Item_Length_and_Width( menu );
}
}
else
{
_nc_Default_Menu.mark = l ? mark : (char *)0;
_nc_Default_Menu.marklen = l;
}
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
+--------------------------------------------------------------------------*/
char *menu_mark(const MENU * menu)
{
return Normalize_Menu( menu )->mark;
}
/* m_item_new.c */
|
