164 lines
4.8 KiB
C
164 lines
4.8 KiB
C
/*
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******************************************************************************
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*
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* Copyright (C) 1998-2003, International Business Machines
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* Corporation and others. All Rights Reserved.
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*
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******************************************************************************
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*
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* File ufmt_cmn.h
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*
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* Modification History:
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*
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* Date Name Description
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* 12/02/98 stephen Creation.
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* 03/12/99 stephen Modified for new C API.
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* 03/15/99 stephen Added defaultCPToUnicode, unicodeToDefaultCP
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******************************************************************************
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*/
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#ifndef UFMT_CMN_H
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#define UFMT_CMN_H
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#include "unicode/utypes.h"
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#define UFMT_DEFAULT_BUFFER_SIZE 128
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#define MAX_UCHAR_BUFFER_SIZE(buffer) (sizeof(buffer)/(UTF_MAX_CHAR_LENGTH*sizeof(UChar)))
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#define MAX_UCHAR_BUFFER_NEEDED(strLen) ((strLen+1)*UTF_MAX_CHAR_LENGTH*sizeof(UChar))
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/**
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* Enum representing the possible argument types for uprintf/uscanf
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*/
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enum ufmt_type_info
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{
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ufmt_empty = 0,
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ufmt_simple_percent, /* %% do nothing */
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ufmt_count, /* special flag for count */
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ufmt_int, /* int */
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ufmt_char, /* int, cast to char */
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ufmt_string, /* char* */
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ufmt_pointer, /* void* */
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ufmt_float, /* float */
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ufmt_double, /* double */
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ufmt_uchar, /* int, cast to UChar */
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ufmt_ustring, /* UChar* */
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/*ufmt_wchar,*/ /* wchar_t */
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/*ufmt_wstring,*/ /* wchar_t* */
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/*ufmt_date,*/ /* Date */
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ufmt_last
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};
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typedef enum ufmt_type_info ufmt_type_info;
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/**
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* Union representing a uprintf/uscanf argument
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*/
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union ufmt_args {
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signed int intValue; /* int, UChar */ /* TODO: Should int32_t be used instead of int? */
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float floatValue; /* float */
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double doubleValue; /* double */
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void *ptrValue; /* any pointer - void*, char*, wchar_t*, UChar* */
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/*wchar_t wcharValue;*/ /* wchar_t */ /* TODO: Should wchar_t be used? */
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/*UDate dateValue;*/ /* Date */
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};
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typedef union ufmt_args ufmt_args;
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/**
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* Macro for determining the minimum of two numbers.
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* @param a An integer
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* @param b An integer
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* @return <TT>a</TT> if </TT>a < b</TT>, <TT>b</TT> otherwise
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*/
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#define ufmt_min(a,b) ((a) < (b) ? (a) : (b))
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/**
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* Convert a UChar in hex radix to an integer value.
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* @param c The UChar to convert.
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* @return The integer value of <TT>c</TT>.
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*/
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int
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ufmt_digitvalue(UChar c);
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/**
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* Determine if a UChar is a digit for a specified radix.
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* @param c The UChar to check.
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* @param radix The desired radix.
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* @return TRUE if <TT>c</TT> is a digit in <TT>radix</TT>, FALSE otherwise.
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*/
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UBool
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ufmt_isdigit(UChar c,
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int32_t radix);
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/**
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* Convert a long to a UChar* in a specified radix
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* @param buffer The target buffer
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* @param len On input, the size of <TT>buffer</TT>. On output,
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* the number of UChars written to <TT>buffer</TT>.
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* @param value The value to be converted
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* @param radix The desired radix
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* @param uselower TRUE means lower case will be used, FALSE means upper case
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* @param minDigits The minimum number of digits for for the formatted number,
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* which will be padded with zeroes. -1 means do not pad.
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*/
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void
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ufmt_ltou(UChar *buffer,
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int32_t *len,
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uint32_t value,
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uint32_t radix,
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UBool uselower,
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int32_t minDigits);
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/**
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* Convert a UChar* in a specified radix to a long.
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* @param buffer The target buffer
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* @param len On input, the size of <TT>buffer</TT>. On output,
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* the number of UChars read from <TT>buffer</TT>.
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* @param radix The desired radix
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* @return The numeric value.
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*/
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long
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ufmt_utol(const UChar *buffer,
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int32_t *len,
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int32_t radix);
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/**
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* Convert a string from the default codepage to Unicode.
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* @param s The string to convert, in the default codepage.
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* @param sSize The size of s to convert.
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* @param target The buffer to convert to.
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* @param tSize The size of target
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* @return A pointer to a newly allocated converted version of s, or 0
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* on error.
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*/
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UChar*
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ufmt_defaultCPToUnicode(const char *s, int32_t sSize,
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UChar *target, int32_t tSize);
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/**
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* Convert a string from the Unicode to the default codepage.
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* @param s The string to convert.
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* @param len The number of characters in s.
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* @return A pointer to a newly allocated converted version of s, or 0
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* on error.
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*/
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char*
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ufmt_unicodeToDefaultCP(const UChar *s,
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int32_t len);
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/**
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* Get the number of fraction digits based on the requested precision.
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* This is a shortcoming of the formatting API, which doesn't
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* support precision
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* @param num The number to look at
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* @param precision The requested precision
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* @return The fraction digits size to use on the formatting API.
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*/
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int32_t
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ufmt_getFractionDigits(double num, int32_t precision);
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#endif
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