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
|
/*
* THIS CODE IS SPECIFICALLY EXEMPTED FROM THE NCURSES PACKAGE COPYRIGHT.
* You may freely copy it for use as a template for your own field types.
* If you develop a field type that might be of general use, please send
* it back to the ncurses maintainers for inclusion in the next version.
*/
#include "form.priv.h"
typedef struct {
int width;
} alphaARG;
/*---------------------------------------------------------------------------
| Facility : libnform
| Function : static void *Make_Alpha_Type(va_list *ap)
|
| Description : Allocate structure for alpha type argument.
|
| Return Values : Pointer to argument structure or NULL on error
+--------------------------------------------------------------------------*/
static void *Make_Alpha_Type(va_list * ap)
{
alphaARG *argp = (alphaARG *)malloc(sizeof(alphaARG));
if (argp)
{
argp->width = va_arg(*ap,int);
}
return ((void *)argp);
}
/*---------------------------------------------------------------------------
| Facility : libnform
| Function : static void *Copy_Alpha_Type(const void * argp)
|
| Description : Copy structure for alpha type argument.
|
| Return Values : Pointer to argument structure or NULL on error.
+--------------------------------------------------------------------------*/
static void *Copy_Alpha_Type(const void * argp)
{
alphaARG *ap = (alphaARG *)argp;
alphaARG *new = (alphaARG *)malloc(sizeof(alphaARG));
if (new)
{
*new = *ap;
}
return ((void *)new);
}
/*---------------------------------------------------------------------------
| Facility : libnform
| Function : static void Free_Alpha_Type( void * argp )
|
| Description : Free structure for alpha type argument.
|
| Return Values : -
+--------------------------------------------------------------------------*/
static void Free_Alpha_Type(void * argp)
{
if (argp)
free(argp);
}
/*---------------------------------------------------------------------------
| Facility : libnform
| Function : static bool Check_Alpha_Field(
| FIELD * field,
| const void * argp)
|
| Description : Validate buffer content to be a valid alpha value
|
| Return Values : TRUE - field is valid
| FALSE - field is invalid
+--------------------------------------------------------------------------*/
static bool Check_Alpha_Field(FIELD * field, const void * argp)
{
int width = ((alphaARG *)argp)->width;
unsigned char *bp = (unsigned char *)field_buffer(field,0);
int l = -1;
unsigned char *s;
while(*bp && *bp==' ')
bp++;
if (*bp)
{
s = bp;
while(*bp && isalpha(*bp))
bp++;
l = (int)(bp-s);
while(*bp && *bp==' ')
bp++;
}
return ((*bp || (l < width)) ? FALSE : TRUE);
}
/*---------------------------------------------------------------------------
| Facility : libnform
| Function : static bool Check_Alpha_Character(
| int c,
| const void * argp)
|
| Description : Check a character for the alpha type.
|
| Return Values : TRUE - character is valid
| FALSE - character is invalid
+--------------------------------------------------------------------------*/
static bool Check_Alpha_Character(int c, const void * argp)
{
return (isalpha(c) ? TRUE : FALSE);
}
static FIELDTYPE typeALPHA = {
_HAS_ARGS | _RESIDENT,
1, /* this is mutable, so we can't be const */
(FIELDTYPE *)0,
(FIELDTYPE *)0,
Make_Alpha_Type,
Copy_Alpha_Type,
Free_Alpha_Type,
Check_Alpha_Field,
Check_Alpha_Character,
NULL,
NULL
};
FIELDTYPE* TYPE_ALPHA = &typeALPHA;
/* fty_alpha.c ends here */
|
