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27 ****************************************************************************/
28
29 /***************************************************************************
30 * *
31 * Author : Juergen Pfeifer *
32 * *
33 ***************************************************************************/
34
35 #include "form.priv.h"
36
37 MODULE_ID("$Id: fty_alpha.c,v 1.23 2007/10/13 19:32:09 tom Exp $")
38
39 #define thisARG alphaARG
40
41 typedef struct
42 {
43 int width;
44 }
45 thisARG;
46
47 /*---------------------------------------------------------------------------
48 | Facility : libnform
49 | Function : static void *Make_This_Type(va_list *ap)
50 |
51 | Description : Allocate structure for alpha type argument.
52 |
53 | Return Values : Pointer to argument structure or NULL on error
54 +--------------------------------------------------------------------------*/
55 static void *
Make_This_Type(va_list * ap)56 Make_This_Type(va_list *ap)
57 {
58 thisARG *argp = typeMalloc(thisARG, 1);
59
60 if (argp)
61 {
62 T((T_CREATE("thisARG %p"), argp));
63 argp->width = va_arg(*ap, int);
64 }
65
66 return ((void *)argp);
67 }
68
69 /*---------------------------------------------------------------------------
70 | Facility : libnform
71 | Function : static void *Copy_This_Type(const void * argp)
72 |
73 | Description : Copy structure for alpha type argument.
74 |
75 | Return Values : Pointer to argument structure or NULL on error.
76 +--------------------------------------------------------------------------*/
77 static void *
Copy_This_Type(const void * argp)78 Copy_This_Type(const void *argp)
79 {
80 const thisARG *ap = (const thisARG *)argp;
81 thisARG *result = typeMalloc(thisARG, 1);
82
83 if (result)
84 {
85 T((T_CREATE("thisARG %p"), result));
86 *result = *ap;
87 }
88
89 return ((void *)result);
90 }
91
92 /*---------------------------------------------------------------------------
93 | Facility : libnform
94 | Function : static void Free_This_Type(void *argp)
95 |
96 | Description : Free structure for alpha type argument.
97 |
98 | Return Values : -
99 +--------------------------------------------------------------------------*/
100 static void
Free_This_Type(void * argp)101 Free_This_Type(void *argp)
102 {
103 if (argp)
104 free(argp);
105 }
106
107 /*---------------------------------------------------------------------------
108 | Facility : libnform
109 | Function : static bool Check_This_Character(
110 | int c,
111 | const void *argp)
112 |
113 | Description : Check a character for the alpha type.
114 |
115 | Return Values : TRUE - character is valid
116 | FALSE - character is invalid
117 +--------------------------------------------------------------------------*/
118 static bool
Check_This_Character(int c,const void * argp GCC_UNUSED)119 Check_This_Character(int c, const void *argp GCC_UNUSED)
120 {
121 #if USE_WIDEC_SUPPORT
122 if (iswalpha((wint_t) c))
123 return TRUE;
124 #endif
125 return (isalpha(UChar(c)) ? TRUE : FALSE);
126 }
127
128 /*---------------------------------------------------------------------------
129 | Facility : libnform
130 | Function : static bool Check_This_Field(
131 | FIELD *field,
132 | const void *argp)
133 |
134 | Description : Validate buffer content to be a valid alpha value
135 |
136 | Return Values : TRUE - field is valid
137 | FALSE - field is invalid
138 +--------------------------------------------------------------------------*/
139 static bool
Check_This_Field(FIELD * field,const void * argp)140 Check_This_Field(FIELD *field, const void *argp)
141 {
142 int width = ((const thisARG *)argp)->width;
143 unsigned char *bp = (unsigned char *)field_buffer(field, 0);
144 bool result = (width < 0);
145
146 Check_CTYPE_Field(result, bp, width, Check_This_Character);
147 return (result);
148 }
149
150 static FIELDTYPE typeTHIS =
151 {
152 _HAS_ARGS | _RESIDENT,
153 1, /* this is mutable, so we can't be const */
154 (FIELDTYPE *)0,
155 (FIELDTYPE *)0,
156 Make_This_Type,
157 Copy_This_Type,
158 Free_This_Type,
159 Check_This_Field,
160 Check_This_Character,
161 NULL,
162 NULL
163 };
164
165 NCURSES_EXPORT_VAR(FIELDTYPE*) TYPE_ALPHA = &typeTHIS;
166
167 /* fty_alpha.c ends here */
168