release/src/router/libncurses/form/form.priv.h

   1 /****************************************************************************
   2  * Copyright (c) 1998-2008,2009 Free Software Foundation, Inc.              *
   3  *                                                                          *
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   5  * copy of this software and associated documentation files (the            *
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  10  * furnished to do so, subject to the following conditions:                 *
  11  *                                                                          *
  12  * The above copyright notice and this permission notice shall be included  *
  13  * in all copies or substantial portions of the Software.                   *
  14  *                                                                          *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
  16  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
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  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
  21  * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
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  26  * authorization.                                                           *
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  28
  29 /****************************************************************************
  30  *   Author:  Juergen Pfeifer, 1995,1997                                    *
  31  ****************************************************************************/
  32
  33 /* $Id: form.priv.h,v 0.32 2009/11/07 21:26:43 tom Exp $ */
  34
  35 #ifndef FORM_PRIV_H
  36 #define FORM_PRIV_H 1
  37
  38 #include "curses.priv.h"
  39 #include "mf_common.h"
  40
  41 #if USE_WIDEC_SUPPORT
  42 #if HAVE_WCTYPE_H
  43 #include <wctype.h>
  44 #endif
  45
  46 #ifndef MB_LEN_MAX
  47 #define MB_LEN_MAX 8 /* should be >= MB_CUR_MAX, but that may be a function */
  48 #endif
  49
  50 #define FIELD_CELL NCURSES_CH_T
  51
  52 #define NCURSES_FIELD_INTERNALS char** expanded; WINDOW *working;
  53 #define NCURSES_FIELD_EXTENSION , (char **)0, (WINDOW *)0
  54
  55 #else
  56
  57 #define FIELD_CELL char
  58
  59 #define NCURSES_FIELD_EXTENSION /* nothing */
  60
  61 #endif
  62
  63 #include "form.h"
  64
  65         /***********************
  66         *   Default objects    *
  67         ***********************/
  68 extern NCURSES_EXPORT_VAR(FORM *)      _nc_Default_Form;
  69 extern NCURSES_EXPORT_VAR(FIELD *)     _nc_Default_Field;
  70 extern NCURSES_EXPORT_VAR(FIELDTYPE *) _nc_Default_FieldType;
  71
  72 /* form  status values */
  73 #define _OVLMODE         (0x04U) /* Form is in overlay mode                */
  74 #define _WINDOW_MODIFIED (0x10U) /* Current field window has been modified */
  75 #define _FCHECK_REQUIRED (0x20U) /* Current field needs validation         */
  76
  77 /* field status values */
  78 #define _CHANGED         (0x01U) /* Field has been changed                 */
  79 #define _NEWTOP          (0x02U) /* Vertical scrolling occurred            */
  80 #define _NEWPAGE         (0x04U) /* field begins new page of form          */
  81 #define _MAY_GROW        (0x08U) /* dynamic field may still grow           */
  82
  83 /* fieldtype status values */
  84 #define _LINKED_TYPE     (0x01U) /* Type is a linked type                  */
  85 #define _HAS_ARGS        (0x02U) /* Type has arguments                     */
  86 #define _HAS_CHOICE      (0x04U) /* Type has choice methods                */
  87 #define _RESIDENT        (0x08U) /* Type is built-in                       */
  88 #define _GENERIC         (0x10U) /* A generic field type                   */
  89
  90 /* This are the field options required to be a selectable field in field
  91    navigation requests */
  92 #define O_SELECTABLE (O_ACTIVE | O_VISIBLE)
  93
  94 /* If form is NULL replace form argument by default-form */
  95 #define Normalize_Form(form) \
  96   ((form) = (form != 0) ? (form) : _nc_Default_Form)
  97
  98 /* If field is NULL replace field argument by default-field */
  99 #define Normalize_Field(field) \
 100   ((field) = (field != 0) ? (field) : _nc_Default_Field)
 101
 102 #if NCURSES_SP_FUNCS
 103 #define Get_Form_Screen(form) \
 104   ((form)->win ? _nc_screen_of((form->win)):CURRENT_SCREEN)
 105 #else
 106 #define Get_Form_Screen(form) CURRENT_SCREEN
 107 #endif
 108
 109 /* Retrieve forms window */
 110 #define Get_Form_Window(form) \
 111   ((form)->sub \
 112    ? (form)->sub \
 113    : ((form)->win \
 114       ? (form)->win \
 115       : StdScreen(Get_Form_Screen(form))))
 116
 117 /* Calculate the size for a single buffer for this field */
 118 #define Buffer_Length(field) ((field)->drows * (field)->dcols)
 119
 120 /* Calculate the total size of all buffers for this field */
 121 #define Total_Buffer_Size(field) \
 122    ( (Buffer_Length(field) + 1) * (1+(field)->nbuf) * sizeof(FIELD_CELL) )
 123
 124 /* Logic to determine whether or not a field is single lined */
 125 #define Single_Line_Field(field) \
 126    (((field)->rows + (field)->nrow) == 1)
 127
 128 /* Logic to determine whether or not a field is selectable */
 129 #define Field_Is_Selectable(f)     (((unsigned)((f)->opts) & O_SELECTABLE)==O_SELECTABLE)
 130 #define Field_Is_Not_Selectable(f) (((unsigned)((f)->opts) & O_SELECTABLE)!=O_SELECTABLE)
 131
 132 typedef struct typearg
 133   {
 134     struct typearg *left;
 135     struct typearg *right;
 136   }
 137 TypeArgument;
 138
 139 /* This is a dummy request code (normally invalid) to be used internally
 140    with the form_driver() routine to position to the first active field
 141    on the form
 142 */
 143 #define FIRST_ACTIVE_MAGIC (-291056)
 144
 145 #define ALL_FORM_OPTS  (                \
 146                         O_NL_OVERLOAD  |\
 147                         O_BS_OVERLOAD   )
 148
 149 #define ALL_FIELD_OPTS (Field_Options)( \
 150                         O_VISIBLE |\
 151                         O_ACTIVE  |\
 152                         O_PUBLIC  |\
 153                         O_EDIT    |\
 154                         O_WRAP    |\
 155                         O_BLANK   |\
 156                         O_AUTOSKIP|\
 157                         O_NULLOK  |\
 158                         O_PASSOK  |\
 159                         O_STATIC   )
 160
 161 #define C_BLANK ' '
 162 #define is_blank(c) ((c)==C_BLANK)
 163
 164 #define C_ZEROS '\0'
 165
 166 extern NCURSES_EXPORT(TypeArgument *) _nc_Make_Argument (const FIELDTYPE*, va_list*, int*);
 167 extern NCURSES_EXPORT(TypeArgument *) _nc_Copy_Argument (const FIELDTYPE*, const TypeArgument*, int*);
 168 extern NCURSES_EXPORT(void) _nc_Free_Argument (const FIELDTYPE*, TypeArgument*);
 169 extern NCURSES_EXPORT(bool) _nc_Copy_Type (FIELD*, FIELD const *);
 170 extern NCURSES_EXPORT(void) _nc_Free_Type (FIELD *);
 171
 172 extern NCURSES_EXPORT(int) _nc_Synchronize_Attributes (FIELD*);
 173 extern NCURSES_EXPORT(int) _nc_Synchronize_Options (FIELD*, Field_Options);
 174 extern NCURSES_EXPORT(int) _nc_Set_Form_Page (FORM*, int, FIELD*);
 175 extern NCURSES_EXPORT(int) _nc_Refresh_Current_Field (FORM*);
 176 extern NCURSES_EXPORT(FIELD *) _nc_First_Active_Field (FORM*);
 177 extern NCURSES_EXPORT(bool) _nc_Internal_Validation (FORM*);
 178 extern NCURSES_EXPORT(int) _nc_Set_Current_Field (FORM*, FIELD*);
 179 extern NCURSES_EXPORT(int) _nc_Position_Form_Cursor (FORM*);
 180
 181 #if NCURSES_INTEROP_FUNCS
 182 extern NCURSES_EXPORT(FIELDTYPE *) _nc_TYPE_INTEGER(void);
 183 extern NCURSES_EXPORT(FIELDTYPE *) _nc_TYPE_ALNUM(void);
 184 extern NCURSES_EXPORT(FIELDTYPE *) _nc_TYPE_ALPHA(void);
 185 extern NCURSES_EXPORT(FIELDTYPE *) _nc_TYPE_ENUM(void);
 186 extern NCURSES_EXPORT(FIELDTYPE *) _nc_TYPE_NUMERIC(void);
 187 extern NCURSES_EXPORT(FIELDTYPE *) _nc_TYPE_REGEXP(void);
 188 extern NCURSES_EXPORT(FIELDTYPE *) _nc_TYPE_IPV4(void);
 189
 190 extern NCURSES_EXPORT(FIELDTYPE *)
 191 _nc_generic_fieldtype(bool (*const field_check) (FORM*,
 192                                                  FIELD *,
 193                                                  const void *),
 194                       bool (*const char_check)  (int,
 195                                                  FORM*,
 196                                                  FIELD*,
 197                                                  const void *),
 198                       bool (*const next)(FORM*,FIELD*,const void*),
 199                       bool (*const prev)(FORM*,FIELD*,const void*),
 200                       void (*freecallback)(void*));
 201 extern NCURSES_EXPORT(int) _nc_set_generic_fieldtype(FIELD*, FIELDTYPE*, int (*)(void**));
 202 extern NCURSES_EXPORT(WINDOW*) _nc_form_cursor(const FORM* , int* , int* );
 203
 204 #define INIT_FT_FUNC(func) {func}
 205 #else
 206 #define INIT_FT_FUNC(func) func
 207 #endif
 208
 209 extern NCURSES_EXPORT(void) _nc_get_fieldbuffer(FORM*, FIELD*, FIELD_CELL*);
 210
 211 #if USE_WIDEC_SUPPORT
 212 extern NCURSES_EXPORT(wchar_t *) _nc_Widen_String(char *, int *);
 213 #endif
 214
 215 #ifdef TRACE
 216
 217 #define returnField(code)       TRACE_RETURN(code,field)
 218 #define returnFieldPtr(code)    TRACE_RETURN(code,field_ptr)
 219 #define returnForm(code)        TRACE_RETURN(code,form)
 220 #define returnFieldType(code)   TRACE_RETURN(code,field_type)
 221 #define returnFormHook(code)    TRACE_RETURN(code,form_hook)
 222
 223 extern NCURSES_EXPORT(FIELD **)     _nc_retrace_field_ptr (FIELD **);
 224 extern NCURSES_EXPORT(FIELD *)      _nc_retrace_field (FIELD *);
 225 extern NCURSES_EXPORT(FIELDTYPE *)  _nc_retrace_field_type (FIELDTYPE *);
 226 extern NCURSES_EXPORT(FORM *)       _nc_retrace_form (FORM *);
 227 extern NCURSES_EXPORT(Form_Hook)    _nc_retrace_form_hook (Form_Hook);
 228
 229 #else /* !TRACE */
 230
 231 #define returnFieldPtr(code)    return code
 232 #define returnFieldType(code)   return code
 233 #define returnField(code)       return code
 234 #define returnForm(code)        return code
 235 #define returnFormHook(code)    return code
 236
 237 #endif /* TRACE/!TRACE */
 238
 239 /*
 240  * Use Check_CTYPE_Field() to simplify FIELDTYPE's that use only the ccheck()
 241  * function.
 242  */
 243 #if USE_WIDEC_SUPPORT
 244 #define Check_CTYPE_Field(result, buffer, width, ccheck) \
 245   while (*buffer && *buffer == ' ') \
 246     buffer++; \
 247   if (*buffer) \
 248     { \
 249       bool blank = FALSE; \
 250       int len; \
 251       int n; \
 252       wchar_t *list = _nc_Widen_String((char *)buffer, &len); \
 253       if (list != 0) \
 254         { \
 255           result = TRUE; \
 256           for (n = 0; n < len; ++n) \
 257             { \
 258               if (blank) \
 259                 { \
 260                   if (list[n] != ' ') \
 261                     { \
 262                       result = FALSE; \
 263                       break; \
 264                     } \
 265                 } \
 266               else if (list[n] == ' ') \
 267                 { \
 268                   blank = TRUE; \
 269                   result = (n + 1 >= width); \
 270                 } \
 271               else if (!ccheck(list[n], NULL)) \
 272                 { \
 273                   result = FALSE; \
 274                   break; \
 275                 } \
 276             } \
 277           free(list); \
 278         } \
 279     }
 280 #else
 281 #define Check_CTYPE_Field(result, buffer, width, ccheck) \
 282   while (*buffer && *buffer == ' ') \
 283     buffer++; \
 284   if (*buffer) \
 285     { \
 286       unsigned char *s = buffer; \
 287       int l = -1; \
 288       while (*buffer && ccheck(*buffer, NULL)) \
 289         buffer++; \
 290       l = (int)(buffer - s); \
 291       while (*buffer && *buffer == ' ') \
 292         buffer++; \
 293       result = ((*buffer || (l < width)) ? FALSE : TRUE); \
 294     }
 295 #endif
 296
 297 #endif /* FORM_PRIV_H */