icuSources/io/uprintf.h

   1 // © 2016 and later: Unicode, Inc. and others.
   2 // License & terms of use: http://www.unicode.org/copyright.html
   3 /*
   4 ******************************************************************************
   5 *
   6 *   Copyright (C) 1998-2006, International Business Machines
   7 *   Corporation and others.  All Rights Reserved.
   8 *
   9 ******************************************************************************
  10 *
  11 * File uprintf.h
  12 *
  13 * Modification History:
  14 *
  15 *   Date        Name        Description
  16 *   11/19/98    stephen        Creation.
  17 *   03/12/99    stephen     Modified for new C API.
  18 ******************************************************************************
  19 */
  20
  21 #ifndef UPRINTF_H
  22 #define UPRINTF_H
  23
  24 #include "unicode/utypes.h"
  25
  26 #if !UCONFIG_NO_FORMATTING
  27
  28 #include "unicode/ustdio.h"
  29 #include "ufmt_cmn.h"
  30 #include "locbund.h"
  31
  32 /**
  33  * Struct encapsulating a single uprintf format specification.
  34  */
  35 typedef struct u_printf_spec_info {
  36   int32_t    fPrecision;    /* Precision  */
  37   int32_t    fWidth;        /* Width  */
  38
  39   UChar     fOrigSpec;      /* Conversion specification */
  40   UChar     fSpec;          /* Conversion specification */
  41   UChar     fPadChar;       /* Padding character  */
  42
  43   UBool     fAlt;           /* # flag  */
  44   UBool     fSpace;         /* Space flag  */
  45   UBool     fLeft;          /* - flag  */
  46   UBool     fShowSign;      /* + flag  */
  47   UBool     fZero;          /* 0 flag  */
  48
  49   UBool     fIsLongDouble;  /* L flag  */
  50   UBool     fIsShort;       /* h flag  */
  51   UBool     fIsLong;        /* l flag  */
  52   UBool     fIsLongLong;    /* ll flag  */
  53 } u_printf_spec_info;
  54
  55 typedef int32_t U_EXPORT2
  56 u_printf_write_stream(void          *context,
  57                       const UChar   *str,
  58                       int32_t       count);
  59
  60 typedef int32_t U_EXPORT2
  61 u_printf_pad_and_justify_stream(void                        *context,
  62                                 const u_printf_spec_info    *info,
  63                                 const UChar                 *result,
  64                                 int32_t                     resultLen);
  65
  66 typedef struct u_printf_stream_handler {
  67     u_printf_write_stream *write;
  68     u_printf_pad_and_justify_stream *pad_and_justify;
  69 } u_printf_stream_handler;
  70
  71 /* Used by sprintf */
  72 typedef struct u_localized_print_string {
  73     UChar     *str;     /* Place to write the string */
  74     int32_t   available;/* Number of codeunits available to write to */
  75     int32_t   len;      /* Maximum number of code units that can be written to output */
  76
  77     ULocaleBundle  fBundle;     /* formatters */
  78 } u_localized_print_string;
  79
  80 #define UP_PERCENT 0x0025
  81
  82 /**
  83  * Parse a single u_printf format string.
  84  * @param fmt A pointer to a '%' character in a u_printf format specification.
  85  * @param spec A pointer to a <TT>u_printf_spec</TT> to receive the parsed
  86  * format specifier.
  87  * @param locStringContext If present, will make sure that it will only write
  88  *          to the buffer when space is available. It's done this way because
  89  *          va_list sometimes can't be passed by pointer.
  90  * @return The number of characters contained in this specifier.
  91  */
  92 U_CFUNC int32_t
  93 u_printf_parse(const u_printf_stream_handler *streamHandler,
  94                const UChar     *fmt,
  95                void            *context,
  96                u_localized_print_string *locStringContext,
  97                ULocaleBundle   *formatBundle,
  98                int32_t         *written,
  99                va_list         ap);
 100
 101 #endif /* #if !UCONFIG_NO_FORMATTING */
 102
 103 #endif