fty_alnum.c revision 174993 
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28
29/***************************************************************************
30*                                                                          *
31*  Author : Juergen Pfeifer                                                *
32*                                                                          *
33***************************************************************************/
34
35#include "form.priv.h"
36
37MODULE_ID("$Id: fty_alnum.c,v 1.21 2007/10/13 19:31:52 tom Exp $")
38
39#define thisARG alnumARG
40
41typedef struct
42  {
43    int width;
44  }
45thisARG;
46
47/*---------------------------------------------------------------------------
48|   Facility      :  libnform
49|   Function      :  static void *Make_This_Type(va_list *ap)
50|
51|   Description   :  Allocate structure for alphanumeric type argument.
52|
53|   Return Values :  Pointer to argument structure or NULL on error
54+--------------------------------------------------------------------------*/
55static void *
56Make_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_ThisType(const void *argp)
72|
73|   Description   :  Copy structure for alphanumeric type argument.
74|
75|   Return Values :  Pointer to argument structure or NULL on error.
76+--------------------------------------------------------------------------*/
77static void *
78Copy_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 alphanumeric type argument.
97|
98|   Return Values :  -
99+--------------------------------------------------------------------------*/
100static void
101Free_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 alphanumeric type.
114|
115|   Return Values :  TRUE  - character is valid
116|                    FALSE - character is invalid
117+--------------------------------------------------------------------------*/
118static bool
119Check_This_Character(int c, const void *argp GCC_UNUSED)
120{
121#if USE_WIDEC_SUPPORT
122  if (iswalnum((wint_t) c))
123    return TRUE;
124#endif
125  return (isalnum(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 alphanumeric value
135|
136|   Return Values :  TRUE  - field is valid
137|                    FALSE - field is invalid
138+--------------------------------------------------------------------------*/
139static bool
140Check_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
150static 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
165NCURSES_EXPORT_VAR(FIELDTYPE*) TYPE_ALNUM = &typeTHIS;
166
167/* fty_alnum.c ends here */
168