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
|
/* $OpenBSD: fty_alnum.c,v 1.6 2001/01/22 18:02:16 millert Exp $ */
/*
* 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.
*/
/***************************************************************************
* *
* Author : Juergen Pfeifer, juergen.pfeifer@gmx.net *
* *
***************************************************************************/
#include "form.priv.h"
MODULE_ID("$From: fty_alnum.c,v 1.10 2000/12/09 23:46:12 tom Exp $")
typedef struct {
int width;
} alnumARG;
/*---------------------------------------------------------------------------
| Facility : libnform
| Function : static void *Make_AlphaNumeric_Type(va_list *ap)
|
| Description : Allocate structure for alphanumeric type argument.
|
| Return Values : Pointer to argument structure or NULL on error
+--------------------------------------------------------------------------*/
static void *Make_AlphaNumeric_Type(va_list * ap)
{
alnumARG *argp = (alnumARG *)malloc(sizeof(alnumARG));
if (argp)
argp->width = va_arg(*ap,int);
return ((void *)argp);
}
/*---------------------------------------------------------------------------
| Facility : libnform
| Function : static void *Copy_AlphaNumericType(const void *argp)
|
| Description : Copy structure for alphanumeric type argument.
|
| Return Values : Pointer to argument structure or NULL on error.
+--------------------------------------------------------------------------*/
static void *Copy_AlphaNumeric_Type(const void *argp)
{
const alnumARG *ap = (const alnumARG *)argp;
alnumARG *result = (alnumARG *)malloc(sizeof(alnumARG));
if (result)
*result = *ap;
return ((void *)result);
}
/*---------------------------------------------------------------------------
| Facility : libnform
| Function : static void Free_AlphaNumeric_Type(void *argp)
|
| Description : Free structure for alphanumeric type argument.
|
| Return Values : -
+--------------------------------------------------------------------------*/
static void Free_AlphaNumeric_Type(void * argp)
{
if (argp)
free(argp);
}
/*---------------------------------------------------------------------------
| Facility : libnform
| Function : static bool Check_AlphaNumeric_Field(
| FIELD *field,
| const void *argp)
|
| Description : Validate buffer content to be a valid alphanumeric value
|
| Return Values : TRUE - field is valid
| FALSE - field is invalid
+--------------------------------------------------------------------------*/
static bool Check_AlphaNumeric_Field(FIELD * field, const void * argp)
{
int width = ((const alnumARG *)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 && isalnum(*bp))
bp++;
l = (int)(bp-s);
while(*bp && *bp==' ')
bp++;
}
return ((*bp || (l < width)) ? FALSE : TRUE);
}
/*---------------------------------------------------------------------------
| Facility : libnform
| Function : static bool Check_AlphaNumeric_Character(
| int c,
| const void *argp )
|
| Description : Check a character for the alphanumeric type.
|
| Return Values : TRUE - character is valid
| FALSE - character is invalid
+--------------------------------------------------------------------------*/
static bool Check_AlphaNumeric_Character(int c, const void * argp GCC_UNUSED)
{
return (isalnum(c) ? TRUE : FALSE);
}
static FIELDTYPE typeALNUM = {
_HAS_ARGS | _RESIDENT,
1, /* this is mutable, so we can't be const */
(FIELDTYPE *)0,
(FIELDTYPE *)0,
Make_AlphaNumeric_Type,
Copy_AlphaNumeric_Type,
Free_AlphaNumeric_Type,
Check_AlphaNumeric_Field,
Check_AlphaNumeric_Character,
NULL,
NULL
};
NCURSES_EXPORT_VAR(FIELDTYPE*) TYPE_ALNUM = &typeALNUM;
/* fty_alnum.c ends here */
|
