payloads/libpayload/curses/form/form.priv.h

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   2  * Copyright (c) 1998-2008,2009 Free Software Foundation, Inc.              *
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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 "curspriv.h"
  39 #include "mf_common.h"
  40
  41 #define UChar(c)        ((unsigned char)(c))
  42
  43 #if USE_WIDEC_SUPPORT
  44 #if HAVE_WCTYPE_H
  45 #include <wctype.h>
  46 #endif
  47
  48 #ifndef MB_LEN_MAX
  49 #define MB_LEN_MAX 8 /* should be >= MB_CUR_MAX, but that may be a function */
  50 #endif
  51
  52 #define FIELD_CELL NCURSES_CH_T
  53
  54 #define NCURSES_FIELD_INTERNALS char** expanded; WINDOW *working;
  55 #define NCURSES_FIELD_EXTENSION , (char **)0, (WINDOW *)0
  56
  57 #else
  58
  59 #define FIELD_CELL char
  60
  61 #define NCURSES_FIELD_EXTENSION /* nothing */
  62
  63 #endif
  64
  65 #include "form.h"
  66
  67         /***********************
  68         *   Default objects    *
  69         ***********************/
  70 extern NCURSES_EXPORT_VAR(FORM *)      _nc_Default_Form;
  71 extern NCURSES_EXPORT_VAR(FIELD *)     _nc_Default_Field;
  72 extern NCURSES_EXPORT_VAR(FIELDTYPE *) _nc_Default_FieldType;
  73
  74 /* form  status values */
  75 #define _OVLMODE         (0x04U) /* Form is in overlay mode                */
  76 #define _WINDOW_MODIFIED (0x10U) /* Current field window has been modified */
  77 #define _FCHECK_REQUIRED (0x20U) /* Current field needs validation         */
  78
  79 /* field status values */
  80 #define _CHANGED         (0x01U) /* Field has been changed                 */
  81 #define _NEWTOP          (0x02U) /* Vertical scrolling occurred            */
  82 #define _NEWPAGE         (0x04U) /* field begins new page of form          */
  83 #define _MAY_GROW        (0x08U) /* dynamic field may still grow           */
  84
  85 /* fieldtype status values */
  86 #define _LINKED_TYPE     (0x01U) /* Type is a linked type                  */
  87 #define _HAS_ARGS        (0x02U) /* Type has arguments                     */
  88 #define _HAS_CHOICE      (0x04U) /* Type has choice methods                */
  89 #define _RESIDENT        (0x08U) /* Type is built-in                       */
  90 #define _GENERIC         (0x10U) /* A generic field type                   */
  91
  92 /* This are the field options required to be a selectable field in field
  93    navigation requests */
  94 #define O_SELECTABLE (O_ACTIVE | O_VISIBLE)
  95
  96 /* If form is NULL replace form argument by default-form */
  97 #define Normalize_Form(form) \
  98   ((form) = (form != 0) ? (form) : _nc_Default_Form)
  99
 100 /* If field is NULL replace field argument by default-field */
 101 #define Normalize_Field(field) \
 102   ((field) = (field != 0) ? (field) : _nc_Default_Field)
 103
 104 #if NCURSES_SP_FUNCS
 105 #define Get_Form_Screen(form) \
 106   ((form)->win ? _nc_screen_of((form->win)):CURRENT_SCREEN)
 107 #else
 108 #define Get_Form_Screen(form) CURRENT_SCREEN
 109 #endif
 110
 111 /* Retrieve forms window */
 112 #define Get_Form_Window(form) \
 113   ((form)->sub != NULL \
 114    ? (form)->sub \
 115    : ((form)->win != NULL \
 116       ? (form)->win \
 117       : StdScreen(Get_Form_Screen(form))))
 118
 119 /* Calculate the size for a single buffer for this field */
 120 #define Buffer_Length(field) ((field)->drows * (field)->dcols)
 121
 122 /* Calculate the total size of all buffers for this field */
 123 #define Total_Buffer_Size(field) \
 124    ( (Buffer_Length(field) + 1) * (1+(field)->nbuf) * sizeof(FIELD_CELL) )
 125
 126 /* Logic to determine whether or not a field is single lined */
 127 #define Single_Line_Field(field) \
 128    (((field)->rows + (field)->nrow) == 1)
 129
 130 /* Logic to determine whether or not a field is selectable */
 131 #define Field_Is_Selectable(f)     (((unsigned)((f)->opts) & O_SELECTABLE)==O_SELECTABLE)
 132 #define Field_Is_Not_Selectable(f) (((unsigned)((f)->opts) & O_SELECTABLE)!=O_SELECTABLE)
 133
 134 typedef struct typearg
 135   {
 136     struct typearg *left;
 137     struct typearg *right;
 138   }
 139 TypeArgument;
 140
 141 /* This is a dummy request code (normally invalid) to be used internally
 142    with the form_driver() routine to position to the first active field
 143    on the form
 144 */
 145 #define FIRST_ACTIVE_MAGIC (-291056)
 146
 147 #define ALL_FORM_OPTS  (                \
 148                         O_NL_OVERLOAD  |\
 149                         O_BS_OVERLOAD   )
 150
 151 #define ALL_FIELD_OPTS (Field_Options)( \
 152                         O_VISIBLE |\
 153                         O_ACTIVE  |\
 154                         O_PUBLIC  |\
 155                         O_EDIT    |\
 156                         O_WRAP    |\
 157                         O_BLANK   |\
 158                         O_AUTOSKIP|\
 159                         O_NULLOK  |\
 160                         O_PASSOK  |\
 161                         O_STATIC   )
 162
 163 #define C_BLANK ' '
 164 #define is_blank(c) ((c)==C_BLANK)
 165
 166 #define C_ZEROS '\0'
 167
 168 extern NCURSES_EXPORT(TypeArgument *) _nc_Make_Argument (const FIELDTYPE*, va_list*, int*);
 169 extern NCURSES_EXPORT(TypeArgument *) _nc_Copy_Argument (const FIELDTYPE*, const TypeArgument*, int*);
 170 extern NCURSES_EXPORT(void) _nc_Free_Argument (const FIELDTYPE*, TypeArgument*);
 171 extern NCURSES_EXPORT(bool) _nc_Copy_Type (FIELD*, FIELD const *);
 172 extern NCURSES_EXPORT(void) _nc_Free_Type (FIELD *);
 173
 174 extern NCURSES_EXPORT(int) _nc_Synchronize_Attributes (FIELD*);
 175 extern NCURSES_EXPORT(int) _nc_Synchronize_Options (FIELD*, Field_Options);
 176 extern NCURSES_EXPORT(int) _nc_Set_Form_Page (FORM*, int, FIELD*);
 177 extern NCURSES_EXPORT(int) _nc_Refresh_Current_Field (FORM*);
 178 extern NCURSES_EXPORT(FIELD *) _nc_First_Active_Field (FORM*);
 179 extern NCURSES_EXPORT(bool) _nc_Internal_Validation (FORM*);
 180 extern NCURSES_EXPORT(int) _nc_Set_Current_Field (FORM*, FIELD*);
 181 extern NCURSES_EXPORT(int) _nc_Position_Form_Cursor (FORM*);
 182
 183 #if NCURSES_INTEROP_FUNCS
 184 extern NCURSES_EXPORT(FIELDTYPE *) _nc_TYPE_INTEGER(void);
 185 extern NCURSES_EXPORT(FIELDTYPE *) _nc_TYPE_ALNUM(void);
 186 extern NCURSES_EXPORT(FIELDTYPE *) _nc_TYPE_ALPHA(void);
 187 extern NCURSES_EXPORT(FIELDTYPE *) _nc_TYPE_ENUM(void);
 188 extern NCURSES_EXPORT(FIELDTYPE *) _nc_TYPE_NUMERIC(void);
 189 extern NCURSES_EXPORT(FIELDTYPE *) _nc_TYPE_REGEXP(void);
 190 extern NCURSES_EXPORT(FIELDTYPE *) _nc_TYPE_IPV4(void);
 191
 192 extern NCURSES_EXPORT(FIELDTYPE *)
 193 _nc_generic_fieldtype(bool (*const field_check) (FORM*,
 194                                                  FIELD *,
 195                                                  const void *),
 196                       bool (*const char_check)  (int,
 197                                                  FORM*,
 198                                                  FIELD*,
 199                                                  const void *),
 200                       bool (*const next)(FORM*,FIELD*,const void*),
 201                       bool (*const prev)(FORM*,FIELD*,const void*),
 202                       void (*freecallback)(void*));
 203 extern NCURSES_EXPORT(int) _nc_set_generic_fieldtype(FIELD*, FIELDTYPE*, int (*)(void**));
 204 extern NCURSES_EXPORT(WINDOW*) _nc_form_cursor(const FORM* , int* , int* );
 205
 206 #define INIT_FT_FUNC(func) {func}
 207 #else
 208 #define INIT_FT_FUNC(func) func
 209 #endif
 210
 211 extern NCURSES_EXPORT(void) _nc_get_fieldbuffer(FORM*, FIELD*, FIELD_CELL*);
 212
 213 #if USE_WIDEC_SUPPORT
 214 extern NCURSES_EXPORT(wchar_t *) _nc_Widen_String(char *, int *);
 215 #endif
 216
 217 #ifdef TRACE
 218
 219 #define returnField(code)       TRACE_RETURN(code,field)
 220 #define returnFieldPtr(code)    TRACE_RETURN(code,field_ptr)
 221 #define returnForm(code)        TRACE_RETURN(code,form)
 222 #define returnFieldType(code)   TRACE_RETURN(code,field_type)
 223 #define returnFormHook(code)    TRACE_RETURN(code,form_hook)
 224
 225 extern NCURSES_EXPORT(FIELD **)     _nc_retrace_field_ptr (FIELD **);
 226 extern NCURSES_EXPORT(FIELD *)      _nc_retrace_field (FIELD *);
 227 extern NCURSES_EXPORT(FIELDTYPE *)  _nc_retrace_field_type (FIELDTYPE *);
 228 extern NCURSES_EXPORT(FORM *)       _nc_retrace_form (FORM *);
 229 extern NCURSES_EXPORT(Form_Hook)    _nc_retrace_form_hook (Form_Hook);
 230
 231 #else /* !TRACE */
 232
 233 #define returnFieldPtr(code)    return code
 234 #define returnFieldType(code)   return code
 235 #define returnField(code)       return code
 236 #define returnForm(code)        return code
 237 #define returnFormHook(code)    return code
 238
 239 #endif /* TRACE/!TRACE */
 240
 241 /*
 242  * Use Check_CTYPE_Field() to simplify FIELDTYPE's that use only the ccheck()
 243  * function.
 244  */
 245 #if USE_WIDEC_SUPPORT
 246 #define Check_CTYPE_Field(result, buffer, width, ccheck) \
 247   while (*buffer && *buffer == ' ') \
 248     buffer++; \
 249   if (*buffer) \
 250     { \
 251       bool blank = FALSE; \
 252       int len; \
 253       int n; \
 254       wchar_t *list = _nc_Widen_String((char *)buffer, &len); \
 255       if (list != 0) \
 256         { \
 257           result = TRUE; \
 258           for (n = 0; n < len; ++n) \
 259             { \
 260               if (blank) \
 261                 { \
 262                   if (list[n] != ' ') \
 263                     { \
 264                       result = FALSE; \
 265                       break; \
 266                     } \
 267                 } \
 268               else if (list[n] == ' ') \
 269                 { \
 270                   blank = TRUE; \
 271                   result = (n + 1 >= width); \
 272                 } \
 273               else if (!ccheck(list[n], NULL)) \
 274                 { \
 275                   result = FALSE; \
 276                   break; \
 277                 } \
 278             } \
 279           free(list); \
 280         } \
 281     }
 282 #else
 283 #define Check_CTYPE_Field(result, buffer, width, ccheck) \
 284   while (*buffer && *buffer == ' ') \
 285     buffer++; \
 286   if (*buffer) \
 287     { \
 288       unsigned char *s = buffer; \
 289       int l = -1; \
 290       while (*buffer && ccheck(*buffer, NULL)) \
 291         buffer++; \
 292       l = (int)(buffer - s); \
 293       while (*buffer && *buffer == ' ') \
 294         buffer++; \
 295       result = ((*buffer || (l < width)) ? FALSE : TRUE); \
 296     }
 297 #endif
 298
 299 #endif /* FORM_PRIV_H */