icuSources/extra/ustdio/uscanset.h

   1 /*
   2 *******************************************************************************
   3 *
   4 *   Copyright (C) 1998-1999, International Business Machines
   5 *   Corporation and others.  All Rights Reserved.
   6 *
   7 *******************************************************************************
   8 *
   9 * File uscanset.h
  10 *
  11 * Modification History:
  12 *
  13 *   Date        Name        Description
  14 *   12/03/98    stephen        Creation.
  15 *   03/12/99    stephen     Modified for new C API.
  16 *******************************************************************************
  17 */
  18
  19 #ifndef USCANSET_H
  20 #define USCANSET_H
  21
  22 #include "unicode/utypes.h"
  23
  24
  25 /**
  26  * Simple struct for a scanset pair, ie a-z or A-Z
  27  */
  28 struct u_scanf_scanset_pair {
  29   UChar start;
  30   UChar end;
  31 };
  32 typedef struct u_scanf_scanset_pair u_scanf_scanset_pair;
  33
  34 #define U_SCANF_MAX_SCANSET_SIZE 512
  35
  36 /**
  37  * Struct representing a scanset
  38  */
  39 struct u_scanf_scanset {
  40   UBool        is_inclusive;    /* false if '^' is given */
  41
  42   UChar            singles        [U_SCANF_MAX_SCANSET_SIZE];
  43   u_scanf_scanset_pair     pairs         [U_SCANF_MAX_SCANSET_SIZE];
  44
  45   int32_t        single_count;    /* count of single chars in set */
  46   int32_t        pair_count;     /* count of pairs in set */
  47 };
  48 typedef struct u_scanf_scanset u_scanf_scanset;
  49
  50 /**
  51  * Init a u_scanf_scanset.
  52  * @param scanset A pointer to the u_scanf_scanset to init.
  53  * @param s A pointer to the first character in the scanset
  54  * @param len On input, a pointer to the length of <TT>s</TT>.  On output,
  55  * a pointer to the number of characters parsed, excluding the final ']'
  56  * @return TRUE if successful, FALSE otherwise.
  57  */
  58 UBool
  59 u_scanf_scanset_init(u_scanf_scanset     *scanset,
  60              const UChar    *s,
  61              int32_t        *len);
  62
  63 /**
  64  * Determine if a UChar is in a u_scanf_scanset
  65  * @param scanset A pointer to a u_scanf_scanset
  66  * @param c The UChar to test.
  67  * @return TRUE if the UChar is in the scanset, FALSE otherwise
  68  */
  69 UBool
  70 u_scanf_scanset_in(u_scanf_scanset     *scanset,
  71            UChar         c);
  72
  73 #endif
  74
  75
  76
  77