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8f74281993
scuffed-code/icu4c/source/extra/ustdio/sprintf.c
George Rhoten 8f74281993 ICU-2256 Get both printf implementations ready for unification, 
and remove the pointless loccache which is not thread safe and didn't really cache that much.

X-SVN-Rev: 12770
2003-08-06 16:18:38 +00:00

1310 lines
44 KiB
C
Raw Blame History

/*
******************************************************************************
*
* Copyright (C) 1998-2003, International Business Machines
* Corporation and others. All Rights Reserved.
*
******************************************************************************
*
* File sprintf.c
*
* Modification History:
*
* Date Name Description
* 02/08/2000 george Creation. Copied from uprintf.c
* 03/27/2002 Mark Schneckloth Many fixes regarding alignment, null termination
* (mschneckloth@atomz.com) and other various problems.
*******************************************************************************
*/
#include "unicode/utypes.h"
#if !UCONFIG_NO_FORMATTING
#include "unicode/ustdio.h"
#include "unicode/ustring.h"
#include "unicode/unum.h"
#include "unicode/udat.h"
#include "unicode/uloc.h"
#include "sprintf.h"
#include "uprntf_p.h"
#include "locbund.h"
#include "cmemory.h"
#include <ctype.h>
#define UP_PERCENT 0x0025
/* ANSI style formatting */
/* Use US-ASCII characters only for formatting */
/* % */
#define UFMT_SIMPLE_PERCENT {ufmt_simple_percent, u_printf_simple_percent_handler}
/* s */
#define UFMT_STRING {ufmt_string, u_printf_string_handler}
/* c */
#define UFMT_CHAR {ufmt_char, u_printf_char_handler}
/* d, i */
#define UFMT_INT {ufmt_int, u_printf_integer_handler}
/* u */
#define UFMT_UINT {ufmt_int, u_printf_uinteger_handler}
/* o */
#define UFMT_OCTAL {ufmt_int, u_printf_octal_handler}
/* x, X */
#define UFMT_HEX {ufmt_int, u_printf_hex_handler}
/* f */
#define UFMT_DOUBLE {ufmt_double, u_printf_double_handler}
/* e, E */
#define UFMT_SCIENTIFIC {ufmt_double, u_printf_scientific_handler}
/* g, G */
#define UFMT_SCIDBL {ufmt_double, u_printf_scidbl_handler}
/* n */
#define UFMT_COUNT {ufmt_count, u_printf_count_handler}
/* non-ANSI extensions */
/* Use US-ASCII characters only for formatting */
/* p */
#define UFMT_POINTER {ufmt_pointer, u_printf_pointer_handler}
/* D */
#define UFMT_DATE {ufmt_date, u_printf_date_handler}
/* T */
#define UFMT_TIME {ufmt_date, u_printf_time_handler}
/* V */
#define UFMT_SPELLOUT {ufmt_double, u_printf_spellout_handler}
/* P */
#define UFMT_PERCENT {ufmt_double, u_printf_percent_handler}
/* M */
#define UFMT_CURRENCY {ufmt_double, u_printf_currency_handler}
/* K */
#define UFMT_UCHAR {ufmt_uchar, u_printf_uchar_handler}
/* U */
#define UFMT_USTRING {ufmt_ustring, u_printf_ustring_handler}
#define UFMT_EMPTY {ufmt_empty, NULL}
typedef struct u_printf_info {
ufmt_type_info info;
u_printf_handler *handler;
} u_printf_info;
#define UPRINTF_NUM_FMT_HANDLERS 108
/* We do not use handlers for 0-0x1f */
#define UPRINTF_BASE_FMT_HANDLERS 0x20
/* buffer size for formatting */
#define UPRINTF_BUFFER_SIZE 1024
#define UPRINTF_SYMBOL_BUFFER_SIZE 8
static const UChar gNullStr[] = {0x28, 0x6E, 0x75, 0x6C, 0x6C, 0x29, 0}; /* "(null)" */
static const UChar gSpaceStr[] = {0x20, 0}; /* " " */
/* u_minstrncpy copies the minimum number of code units of (count or output->available) */
static int32_t
u_sprintf_write(void *context,
const UChar *str,
int32_t count)
{
u_localized_string *output = (u_localized_string *)context;
int32_t size = ufmt_min(count, output->available);
u_strncpy(output->str + (output->len - output->available), str, size);
output->available -= size;
return size;
}
static int32_t
u_sprintf_pad_and_justify(void *context,
const u_printf_spec_info *info,
const UChar *result,
int32_t resultLen)
{
u_localized_string *output = (u_localized_string *)context;
int32_t written = 0;
resultLen = ufmt_min(resultLen, output->available);
/* pad and justify, if needed */
if(info->fWidth != -1 && resultLen < info->fWidth) {
int32_t paddingLeft = info->fWidth - resultLen;
int32_t outputPos = output->len - output->available;
if (paddingLeft + resultLen > output->available) {
paddingLeft = output->available - resultLen;
if (paddingLeft < 0) {
paddingLeft = 0;
}
/* paddingLeft = output->available - resultLen;*/
}
written += paddingLeft;
/* left justify */
if(info->fLeft) {
written += u_sprintf_write(output, result, resultLen);
u_memset(&output->str[outputPos + resultLen], info->fPadChar, paddingLeft);
output->available -= paddingLeft;
}
/* right justify */
else {
u_memset(&output->str[outputPos], info->fPadChar, paddingLeft);
output->available -= paddingLeft;
written += u_sprintf_write(output, result, resultLen);
}
}
/* just write the formatted output */
else {
written = u_sprintf_write(output, result, resultLen);
}
return written;
}
/* Sets the sign of a format based on u_printf_spec_info */
/* TODO: Is setting the prefix symbol to a positive sign a good idea in all locales? */
static void
u_printf_set_sign(UNumberFormat *format,
const u_printf_spec_info *info,
UErrorCode *status)
{
if(info->fShowSign) {
if (info->fSpace) {
/* Setting UNUM_PLUS_SIGN_SYMBOL affects the exponent too. */
/* unum_setSymbol(format, UNUM_PLUS_SIGN_SYMBOL, gSpaceStr, 1, &status); */
unum_setTextAttribute(format, UNUM_POSITIVE_PREFIX, gSpaceStr, 1, status);
}
else {
UChar plusSymbol[UPRINTF_SYMBOL_BUFFER_SIZE];
int32_t symbolLen;
symbolLen = unum_getSymbol(format,
UNUM_PLUS_SIGN_SYMBOL,
plusSymbol,
sizeof(plusSymbol)/sizeof(*plusSymbol),
status);
unum_setTextAttribute(format,
UNUM_POSITIVE_PREFIX,
plusSymbol,
symbolLen,
status);
}
}
}
/* handle a '%' */
static int32_t
u_printf_simple_percent_handler(const u_printf_stream_handler *handler,
void *context,
ULocaleBundle *formatBundle,
const u_printf_spec_info *info,
const ufmt_args *args)
{
static const UChar PERCENT[] = { UP_PERCENT };
/* put a single '%' onto the output */
return handler->write(context, PERCENT, 1);
}
/* handle 's' */
static int32_t
u_printf_string_handler(const u_printf_stream_handler *handler,
void *context,
ULocaleBundle *formatBundle,
const u_printf_spec_info *info,
const ufmt_args *args)
{
UChar *s;
UChar buffer[UFMT_DEFAULT_BUFFER_SIZE];
int32_t len, written;
int32_t argSize;
const char *arg = (const char*)(args[0].ptrValue);
/* convert from the default codepage to Unicode */
if (arg) {
argSize = (int32_t)strlen(arg) + 1;
if (argSize >= MAX_UCHAR_BUFFER_SIZE(buffer)) {
s = ufmt_defaultCPToUnicode(arg, argSize,
(UChar *)uprv_malloc(MAX_UCHAR_BUFFER_NEEDED(argSize)),
MAX_UCHAR_BUFFER_NEEDED(argSize));
if(s == NULL) {
return 0;
}
}
else {
s = ufmt_defaultCPToUnicode(arg, argSize, buffer,
sizeof(buffer)/sizeof(UChar));
}
}
else {
s = (UChar *)gNullStr;
}
len = u_strlen(s);
/* width = minimum # of characters to write */
/* precision = maximum # of characters to write */
/* precision takes precedence over width */
/* determine if the string should be truncated */
if(info->fPrecision != -1 && len > info->fPrecision) {
written = handler->write(context, s, info->fPrecision);
}
/* determine if the string should be padded */
else {
written = handler->pad_and_justify(context, info, s, len);
}
/* clean up */
if (gNullStr != s && buffer != s) {
uprv_free(s);
}
return written;
}
static int32_t
u_printf_char_handler(const u_printf_stream_handler *handler,
void *context,
ULocaleBundle *formatBundle,
const u_printf_spec_info *info,
const ufmt_args *args)
{
UChar s[UTF_MAX_CHAR_LENGTH+1];
int32_t len = 1, written;
unsigned char arg = (unsigned char)(args[0].intValue);
/* convert from default codepage to Unicode */
ufmt_defaultCPToUnicode((const char *)&arg, 2, s, sizeof(s)/sizeof(UChar));
/* Remember that this may be an MBCS character */
if (arg != 0) {
len = u_strlen(s);
}
/* width = minimum # of characters to write */
/* precision = maximum # of characters to write */
/* precision takes precedence over width */
/* determine if the string should be truncated */
if(info->fPrecision != -1 && len > info->fPrecision) {
written = handler->write(context, s, info->fPrecision);
}
else {
/* determine if the string should be padded */
written = handler->pad_and_justify(context, info, s, len);
}
return written;
}
static int32_t
u_printf_double_handler(const u_printf_stream_handler *handler,
void *context,
ULocaleBundle *formatBundle,
const u_printf_spec_info *info,
const ufmt_args *args)
{
double num = (double) (args[0].doubleValue);
UNumberFormat *format;
UChar result [UPRINTF_BUFFER_SIZE];
int32_t minDecimalDigits;
int32_t maxDecimalDigits;
UErrorCode status = U_ZERO_ERROR;
/* mask off any necessary bits */
/* if(! info->fIsLongDouble)
num &= DBL_MAX;*/
/* get the formatter */
format = u_locbund_getNumberFormat(formatBundle, UNUM_DECIMAL);
/* handle error */
if(format == 0)
return 0;
/* save the formatter's state */
minDecimalDigits = unum_getAttribute(format, UNUM_MIN_FRACTION_DIGITS);
maxDecimalDigits = unum_getAttribute(format, UNUM_MAX_FRACTION_DIGITS);
/* set the appropriate flags and number of decimal digits on the formatter */
if(info->fPrecision != -1) {
/* set the # of decimal digits */
unum_setAttribute(format, UNUM_FRACTION_DIGITS, info->fPrecision);
}
else if(info->fPrecision == 0 && ! info->fAlt) {
/* no decimal point in this case */
unum_setAttribute(format, UNUM_FRACTION_DIGITS, 0);
}
else if(info->fAlt) {
/* '#' means always show decimal point */
/* copy of printf behavior on Solaris - '#' shows 6 digits */
unum_setAttribute(format, UNUM_FRACTION_DIGITS, 6);
}
else {
/* # of decimal digits is 6 if precision not specified regardless of locale */
unum_setAttribute(format, UNUM_FRACTION_DIGITS, 6);
}
/* set whether to show the sign */
u_printf_set_sign(format, info, &status);
/* format the number */
unum_formatDouble(format, num, result, UPRINTF_BUFFER_SIZE, 0, &status);
/* restore the number format */
unum_setAttribute(format, UNUM_MIN_FRACTION_DIGITS, minDecimalDigits);
unum_setAttribute(format, UNUM_MAX_FRACTION_DIGITS, maxDecimalDigits);
return handler->pad_and_justify(context, info, result, u_strlen(result));
}
/* HSYS */
static int32_t
u_printf_integer_handler(const u_printf_stream_handler *handler,
void *context,
ULocaleBundle *formatBundle,
const u_printf_spec_info *info,
const ufmt_args *args)
{
long num = (long) (args[0].intValue);
UNumberFormat *format;
UChar result [UPRINTF_BUFFER_SIZE];
int32_t minDigits = -1;
UErrorCode status = U_ZERO_ERROR;
/* mask off any necessary bits */
if(info->fIsShort)
num &= UINT16_MAX;
else if(! info->fIsLong || ! info->fIsLongLong)
num &= UINT32_MAX;
/* get the formatter */
format = u_locbund_getNumberFormat(formatBundle, UNUM_DECIMAL);
/* handle error */
if(format == 0)
return 0;
/* set the appropriate flags on the formatter */
/* set the minimum integer digits */
if(info->fPrecision != -1) {
/* set the minimum # of digits */
minDigits = unum_getAttribute(format, UNUM_MIN_INTEGER_DIGITS);
unum_setAttribute(format, UNUM_MIN_INTEGER_DIGITS, info->fPrecision);
}
/* set whether to show the sign */
if(info->fShowSign) {
u_printf_set_sign(format, info, &status);
}
/* format the number */
unum_format(format, num, result, UPRINTF_BUFFER_SIZE, 0, &status);
/* restore the number format */
if (minDigits != -1) {
unum_setAttribute(format, UNUM_MIN_INTEGER_DIGITS, minDigits);
}
return handler->pad_and_justify(context, info, result, u_strlen(result));
}
static int32_t
u_printf_hex_handler(const u_printf_stream_handler *handler,
void *context,
ULocaleBundle *formatBundle,
const u_printf_spec_info *info,
const ufmt_args *args)
{
long num = (long) (args[0].intValue);
UChar result [UPRINTF_BUFFER_SIZE];
int32_t len = UPRINTF_BUFFER_SIZE;
/* mask off any necessary bits */
if(info->fIsShort)
num &= UINT16_MAX;
else if(! info->fIsLong || ! info->fIsLongLong)
num &= UINT32_MAX;
/* format the number, preserving the minimum # of digits */
ufmt_ltou(result, &len, num, 16,
(UBool)(info->fSpec == 0x0078),
(info->fPrecision == -1 && info->fZero) ? info->fWidth : info->fPrecision);
/* convert to alt form, if desired */
if(num != 0 && info->fAlt && len < UPRINTF_BUFFER_SIZE - 2) {
/* shift the formatted string right by 2 chars */
memmove(result + 2, result, len * sizeof(UChar));
result[0] = 0x0030;
result[1] = info->fSpec;
len += 2;
}
return handler->pad_and_justify(context, info, result, len);
}
static int32_t
u_printf_octal_handler(const u_printf_stream_handler *handler,
void *context,
ULocaleBundle *formatBundle,
const u_printf_spec_info *info,
const ufmt_args *args)
{
long num = (long) (args[0].intValue);
UChar result [UPRINTF_BUFFER_SIZE];
int32_t len = UPRINTF_BUFFER_SIZE;
/* mask off any necessary bits */
if(info->fIsShort)
num &= UINT16_MAX;
else if(! info->fIsLong || ! info->fIsLongLong)
num &= UINT32_MAX;
/* format the number, preserving the minimum # of digits */
ufmt_ltou(result, &len, num, 8,
FALSE, /* doesn't matter for octal */
info->fPrecision == -1 && info->fZero ? info->fWidth : info->fPrecision);
/* convert to alt form, if desired */
if(info->fAlt && result[0] != 0x0030 && len < UPRINTF_BUFFER_SIZE - 1) {
/* shift the formatted string right by 1 char */
memmove(result + 1, result, len * sizeof(UChar));
result[0] = 0x0030;
len += 1;
}
return handler->pad_and_justify(context, info, result, len);
}
static int32_t
u_printf_uinteger_handler(const u_printf_stream_handler *handler,
void *context,
ULocaleBundle *formatBundle,
const u_printf_spec_info *info,
const ufmt_args *args)
{
u_printf_spec_info uint_info;
ufmt_args uint_args;
memcpy(&uint_info, info, sizeof(u_printf_spec_info));
memcpy(&uint_args, args, sizeof(ufmt_args));
uint_info.fPrecision = 0;
uint_info.fAlt = FALSE;
/* Get around int32_t limitations */
uint_args.doubleValue = ((double) ((uint32_t) (uint_args.intValue)));
return u_printf_double_handler(handler, context, formatBundle, &uint_info, &uint_args);
}
static int32_t
u_printf_pointer_handler(const u_printf_stream_handler *handler,
void *context,
ULocaleBundle *formatBundle,
const u_printf_spec_info *info,
const ufmt_args *args)
{
long num = (long) (args[0].intValue);
UChar result [UPRINTF_BUFFER_SIZE];
int32_t len = UPRINTF_BUFFER_SIZE;
/* format the pointer in hex */
ufmt_ltou(result, &len, num, 16, TRUE, info->fPrecision);
return handler->pad_and_justify(context, info, result, len);
}
static int32_t
u_printf_scientific_handler(const u_printf_stream_handler *handler,
void *context,
ULocaleBundle *formatBundle,
const u_printf_spec_info *info,
const ufmt_args *args)
{
double num = (double) (args[0].doubleValue);
UNumberFormat *format;
UChar result [UPRINTF_BUFFER_SIZE];
int32_t minDecimalDigits;
int32_t maxDecimalDigits;
UErrorCode status = U_ZERO_ERROR;
UChar srcExpBuf[UPRINTF_SYMBOL_BUFFER_SIZE];
int32_t srcLen, expLen;
UChar expBuf[UPRINTF_SYMBOL_BUFFER_SIZE];
/* mask off any necessary bits */
/* if(! info->fIsLongDouble)
num &= DBL_MAX;*/
/* get the formatter */
format = u_locbund_getNumberFormat(formatBundle, UNUM_SCIENTIFIC);
/* handle error */
if(format == 0)
return 0;
/* set the appropriate flags on the formatter */
srcLen = unum_getSymbol(format,
UNUM_EXPONENTIAL_SYMBOL,
srcExpBuf,
sizeof(srcExpBuf),
&status);
/* Upper/lower case the e */
if (info->fSpec == (UChar)0x65 /* e */) {
expLen = u_strToLower(expBuf, (int32_t)sizeof(expBuf),
srcExpBuf, srcLen,
formatBundle->fLocale,
&status);
}
else {
expLen = u_strToUpper(expBuf, (int32_t)sizeof(expBuf),
srcExpBuf, srcLen,
formatBundle->fLocale,
&status);
}
unum_setSymbol(format,
UNUM_EXPONENTIAL_SYMBOL,
expBuf,
expLen,
&status);
/* save the formatter's state */
minDecimalDigits = unum_getAttribute(format, UNUM_MIN_FRACTION_DIGITS);
maxDecimalDigits = unum_getAttribute(format, UNUM_MAX_FRACTION_DIGITS);
/* set the appropriate flags and number of decimal digits on the formatter */
if(info->fPrecision != -1) {
/* set the # of decimal digits */
unum_setAttribute(format, UNUM_FRACTION_DIGITS, info->fPrecision);
}
else if(info->fPrecision == 0 && ! info->fAlt) {
/* no decimal point in this case */
unum_setAttribute(format, UNUM_FRACTION_DIGITS, 0);
}
else if(info->fAlt) {
/* '#' means always show decimal point */
/* copy of printf behavior on Solaris - '#' shows 6 digits */
unum_setAttribute(format, UNUM_FRACTION_DIGITS, 6);
}
else {
/* # of decimal digits is 6 if precision not specified */
unum_setAttribute(format, UNUM_FRACTION_DIGITS, 6);
}
/* set whether to show the sign */
u_printf_set_sign(format, info, &status);
/* format the number */
unum_formatDouble(format, num, result, UPRINTF_BUFFER_SIZE, 0, &status);
/* restore the number format */
unum_setAttribute(format, UNUM_MIN_FRACTION_DIGITS, minDecimalDigits);
unum_setAttribute(format, UNUM_MAX_FRACTION_DIGITS, maxDecimalDigits);
/* Since we clone the fBundle and we're only using the scientific
format, we don't need to save the old exponent value. */
/*unum_setSymbol(format,
UNUM_EXPONENTIAL_SYMBOL,
srcExpBuf,
srcLen,
&status);*/
return handler->pad_and_justify(context, info, result, u_strlen(result));
}
static int32_t
u_printf_date_handler(const u_printf_stream_handler *handler,
void *context,
ULocaleBundle *formatBundle,
const u_printf_spec_info *info,
const ufmt_args *args)
{
UDate num = (UDate) (args[0].dateValue);
UDateFormat *format;
UChar result [UPRINTF_BUFFER_SIZE];
UErrorCode status = U_ZERO_ERROR;
/* get the formatter */
format = u_locbund_getDateFormat(formatBundle);
/* handle error */
if(format == 0)
return 0;
/* format the date */
udat_format(format, num, result, UPRINTF_BUFFER_SIZE, 0, &status);
return handler->pad_and_justify(context, info, result, u_strlen(result));
}
static int32_t
u_printf_time_handler(const u_printf_stream_handler *handler,
void *context,
ULocaleBundle *formatBundle,
const u_printf_spec_info *info,
const ufmt_args *args)
{
UDate num = (UDate) (args[0].dateValue);
UDateFormat *format;
UChar result [UPRINTF_BUFFER_SIZE];
UErrorCode status = U_ZERO_ERROR;
/* get the formatter */
format = u_locbund_getTimeFormat(formatBundle);
/* handle error */
if(format == 0)
return 0;
/* format the time */
udat_format(format, num, result, UPRINTF_BUFFER_SIZE, 0, &status);
return handler->pad_and_justify(context, info, result, u_strlen(result));
}
static int32_t
u_printf_percent_handler(const u_printf_stream_handler *handler,
void *context,
ULocaleBundle *formatBundle,
const u_printf_spec_info *info,
const ufmt_args *args)
{
double num = (double) (args[0].doubleValue);
UNumberFormat *format;
UChar result [UPRINTF_BUFFER_SIZE];
int32_t minDecimalDigits;
int32_t maxDecimalDigits;
UErrorCode status = U_ZERO_ERROR;
/* mask off any necessary bits */
/* if(! info->fIsLongDouble)
num &= DBL_MAX;*/
/* get the formatter */
format = u_locbund_getNumberFormat(formatBundle, UNUM_PERCENT);
/* handle error */
if(format == 0)
return 0;
/* save the formatter's state */
minDecimalDigits = unum_getAttribute(format, UNUM_MIN_FRACTION_DIGITS);
maxDecimalDigits = unum_getAttribute(format, UNUM_MAX_FRACTION_DIGITS);
/* set the appropriate flags and number of decimal digits on the formatter */
if(info->fPrecision != -1) {
/* set the # of decimal digits */
unum_setAttribute(format, UNUM_FRACTION_DIGITS, info->fPrecision);
}
else if(info->fPrecision == 0 && ! info->fAlt) {
/* no decimal point in this case */
unum_setAttribute(format, UNUM_FRACTION_DIGITS, 0);
}
else if(info->fAlt) {
/* '#' means always show decimal point */
/* copy of printf behavior on Solaris - '#' shows 6 digits */
unum_setAttribute(format, UNUM_FRACTION_DIGITS, 6);
}
else {
/* # of decimal digits is 6 if precision not specified */
unum_setAttribute(format, UNUM_FRACTION_DIGITS, 6);
}
/* set whether to show the sign */
u_printf_set_sign(format, info, &status);
/* format the number */
unum_formatDouble(format, num, result, UPRINTF_BUFFER_SIZE, 0, &status);
/* restore the number format */
unum_setAttribute(format, UNUM_MIN_FRACTION_DIGITS, minDecimalDigits);
unum_setAttribute(format, UNUM_MAX_FRACTION_DIGITS, maxDecimalDigits);
return handler->pad_and_justify(context, info, result, u_strlen(result));
}
static int32_t
u_printf_currency_handler(const u_printf_stream_handler *handler,
void *context,
ULocaleBundle *formatBundle,
const u_printf_spec_info *info,
const ufmt_args *args)
{
double num = (double) (args[0].doubleValue);
UNumberFormat *format;
UChar result [UPRINTF_BUFFER_SIZE];
int32_t minDecimalDigits;
int32_t maxDecimalDigits;
UErrorCode status = U_ZERO_ERROR;
/* mask off any necessary bits */
/* if(! info->fIsLongDouble)
num &= DBL_MAX;*/
/* get the formatter */
format = u_locbund_getNumberFormat(formatBundle, UNUM_CURRENCY);
/* handle error */
if(format == 0)
return 0;
/* save the formatter's state */
minDecimalDigits = unum_getAttribute(format, UNUM_MIN_FRACTION_DIGITS);
maxDecimalDigits = unum_getAttribute(format, UNUM_MAX_FRACTION_DIGITS);
/* set the appropriate flags and number of decimal digits on the formatter */
if(info->fPrecision != -1) {
/* set the # of decimal digits */
unum_setAttribute(format, UNUM_FRACTION_DIGITS, info->fPrecision);
}
else if(info->fPrecision == 0 && ! info->fAlt) {
/* no decimal point in this case */
unum_setAttribute(format, UNUM_FRACTION_DIGITS, 0);
}
else if(info->fAlt) {
/* '#' means always show decimal point */
/* copy of printf behavior on Solaris - '#' shows 6 digits */
unum_setAttribute(format, UNUM_FRACTION_DIGITS, 2);
}
else {
/* # of decimal digits is 2 if precision not specified, 2 is typical */
unum_setAttribute(format, UNUM_FRACTION_DIGITS, 2);
}
/* set whether to show the sign */
u_printf_set_sign(format, info, &status);
/* format the number */
unum_formatDouble(format, num, result, UPRINTF_BUFFER_SIZE, 0, &status);
/* restore the number format */
unum_setAttribute(format, UNUM_MIN_FRACTION_DIGITS, minDecimalDigits);
unum_setAttribute(format, UNUM_MAX_FRACTION_DIGITS, maxDecimalDigits);
return handler->pad_and_justify(context, info, result, u_strlen(result));
}
static int32_t
u_printf_ustring_handler(const u_printf_stream_handler *handler,
void *context,
ULocaleBundle *formatBundle,
const u_printf_spec_info *info,
const ufmt_args *args)
{
int32_t len, written;
const UChar *arg = (const UChar*)(args[0].ptrValue);
/* allocate enough space for the buffer */
if (arg == NULL) {
arg = gNullStr;
}
len = u_strlen(arg);
/* width = minimum # of characters to write */
/* precision = maximum # of characters to write */
/* precision takes precedence over width */
/* determine if the string should be truncated */
if(info->fPrecision != -1 && len > info->fPrecision) {
written = handler->write(context, arg, info->fPrecision);
}
else {
/* determine if the string should be padded */
written = handler->pad_and_justify(context, info, arg, len);
}
return written;
}
static int32_t
u_printf_uchar_handler(const u_printf_stream_handler *handler,
void *context,
ULocaleBundle *formatBundle,
const u_printf_spec_info *info,
const ufmt_args *args)
{
int32_t written = 0;
UChar arg = (UChar)(args[0].intValue);
/* width = minimum # of characters to write */
/* precision = maximum # of characters to write */
/* precision takes precedence over width */
/* determine if the char should be printed */
if(info->fPrecision != -1 && info->fPrecision < 1) {
/* write nothing */
written = 0;
}
else {
/* determine if the string should be padded */
written = handler->pad_and_justify(context, info, &arg, 1);
}
return written;
}
static int32_t
u_printf_scidbl_handler(const u_printf_stream_handler *handler,
void *context,
ULocaleBundle *formatBundle,
const u_printf_spec_info *info,
const ufmt_args *args)
{
u_printf_spec_info scidbl_info;
double num = args[0].doubleValue;
memcpy(&scidbl_info, info, sizeof(u_printf_spec_info));
/* determine whether to use 'd', 'e' or 'f' notation */
if (scidbl_info.fPrecision == -1 && num == uprv_trunc(num))
{
/* use 'f' notation */
scidbl_info.fSpec = 0x0066;
scidbl_info.fPrecision = 0;
/* call the double handler */
return u_printf_double_handler(handler, context, formatBundle, &scidbl_info, args);
}
else if(num < 0.0001 || (scidbl_info.fPrecision < 1 && 1000000.0 <= num)
|| (scidbl_info.fPrecision != -1 && num > uprv_pow10(scidbl_info.fPrecision)))
{
/* use 'e' or 'E' notation */
scidbl_info.fSpec = scidbl_info.fSpec - 2;
/* call the scientific handler */
return u_printf_scientific_handler(handler, context, formatBundle, &scidbl_info, args);
}
else {
/* use 'f' notation */
scidbl_info.fSpec = 0x0066;
/* call the double handler */
return u_printf_double_handler(handler, context, formatBundle, &scidbl_info, args);
}
}
static int32_t
u_printf_count_handler(const u_printf_stream_handler *handler,
void *context,
ULocaleBundle *formatBundle,
const u_printf_spec_info *info,
const ufmt_args *args)
{
int *count = (int*)(args[0].ptrValue);
/* in the special case of count, the u_printf_spec_info's width */
/* will contain the # of chars written thus far */
*count = info->fWidth;
return 0;
}
static int32_t
u_printf_spellout_handler(const u_printf_stream_handler *handler,
void *context,
ULocaleBundle *formatBundle,
const u_printf_spec_info *info,
const ufmt_args *args)
{
double num = (double) (args[0].doubleValue);
UNumberFormat *format;
UChar result [UPRINTF_BUFFER_SIZE];
int32_t minDecimalDigits;
int32_t maxDecimalDigits;
UErrorCode status = U_ZERO_ERROR;
/* mask off any necessary bits */
/* if(! info->fIsLongDouble)
num &= DBL_MAX;*/
/* get the formatter */
format = u_locbund_getNumberFormat(formatBundle, UNUM_SPELLOUT);
/* handle error */
if(format == 0)
return 0;
/* save the formatter's state */
minDecimalDigits = unum_getAttribute(format, UNUM_MIN_FRACTION_DIGITS);
maxDecimalDigits = unum_getAttribute(format, UNUM_MAX_FRACTION_DIGITS);
/* set the appropriate flags and number of decimal digits on the formatter */
if(info->fPrecision != -1) {
/* set the # of decimal digits */
unum_setAttribute(format, UNUM_FRACTION_DIGITS, info->fPrecision);
}
else if(info->fPrecision == 0 && ! info->fAlt) {
/* no decimal point in this case */
unum_setAttribute(format, UNUM_FRACTION_DIGITS, 0);
}
else if(info->fAlt) {
/* '#' means always show decimal point */
/* copy of printf behavior on Solaris - '#' shows 6 digits */
unum_setAttribute(format, UNUM_FRACTION_DIGITS, 6);
}
else {
/* # of decimal digits is 6 if precision not specified */
unum_setAttribute(format, UNUM_FRACTION_DIGITS, 6);
}
/* set whether to show the sign */
u_printf_set_sign(format, info, &status);
/* format the number */
unum_formatDouble(format, num, result, UPRINTF_BUFFER_SIZE, 0, &status);
/* restore the number format */
unum_setAttribute(format, UNUM_MIN_FRACTION_DIGITS, minDecimalDigits);
unum_setAttribute(format, UNUM_MAX_FRACTION_DIGITS, maxDecimalDigits);
return handler->pad_and_justify(context, info, result, u_strlen(result));
}
U_CAPI int32_t U_EXPORT2
u_sprintf(UChar *buffer,
const char *locale,
const char *patternSpecification,
... )
{
va_list ap;
int32_t written;
va_start(ap, patternSpecification);
written = u_vsnprintf(buffer, INT32_MAX, locale, patternSpecification, ap);
va_end(ap);
return written;
}
U_CAPI int32_t U_EXPORT2
u_sprintf_u(UChar *buffer,
const char *locale,
const UChar *patternSpecification,
... )
{
va_list ap;
int32_t written;
va_start(ap, patternSpecification);
written = u_vsnprintf_u(buffer, INT32_MAX, locale, patternSpecification, ap);
va_end(ap);
return written;
}
U_CAPI int32_t U_EXPORT2 /* U_CAPI ... U_EXPORT2 added by Peter Kirk 17 Nov 2001 */
u_vsprintf(UChar *buffer,
const char *locale,
const char *patternSpecification,
va_list ap)
{
return u_vsnprintf(buffer, INT32_MAX, locale, patternSpecification, ap);
}
U_CAPI int32_t U_EXPORT2
u_snprintf(UChar *buffer,
int32_t count,
const char *locale,
const char *patternSpecification,
... )
{
va_list ap;
int32_t written;
va_start(ap, patternSpecification);
written = u_vsnprintf(buffer, count, locale, patternSpecification, ap);
va_end(ap);
return written;
}
U_CAPI int32_t U_EXPORT2
u_snprintf_u(UChar *buffer,
int32_t count,
const char *locale,
const UChar *patternSpecification,
... )
{
va_list ap;
int32_t written;
va_start(ap, patternSpecification);
written = u_vsnprintf_u(buffer, count, locale, patternSpecification, ap);
va_end(ap);
return written;
}
U_CAPI int32_t U_EXPORT2 /* U_CAPI ... U_EXPORT2 added by Peter Kirk 17 Nov 2001 */
u_vsnprintf(UChar *buffer,
int32_t count,
const char *locale,
const char *patternSpecification,
va_list ap)
{
int32_t written;
UChar *pattern;
UChar patBuffer[UFMT_DEFAULT_BUFFER_SIZE];
int32_t size = (int32_t)strlen(patternSpecification) + 1;
/* convert from the default codepage to Unicode */
if (size >= MAX_UCHAR_BUFFER_SIZE(patBuffer)) {
pattern = (UChar *)uprv_malloc(size * sizeof(UChar));
if(pattern == 0) {
return 0;
}
}
else {
pattern = patBuffer;
}
u_charsToUChars(patternSpecification, pattern, size);
/* do the work */
written = u_vsnprintf_u(buffer, count, locale, pattern, ap);
/* clean up */
if (pattern != patBuffer) {
uprv_free(pattern);
}
return written;
}
U_CAPI int32_t U_EXPORT2
u_vsprintf_u(UChar *buffer,
const char *locale,
const UChar *patternSpecification,
va_list ap)
{
return u_vsnprintf_u(buffer, INT32_MAX, locale, patternSpecification, ap);
}
/* Use US-ASCII characters only for formatting. Most codepages have
characters 20-7F from Unicode. Using any other codepage specific
characters will make it very difficult to format the string on
non-Unicode machines */
static const u_printf_info g_u_printf_infos[UPRINTF_NUM_FMT_HANDLERS] = {
/* 0x20 */
UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY,
UFMT_EMPTY, UFMT_SIMPLE_PERCENT,UFMT_EMPTY, UFMT_EMPTY,
UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY,
UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY,
/* 0x30 */
UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY,
UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY,
UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY,
UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY,
/* 0x40 */
UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY,
UFMT_DATE, UFMT_SCIENTIFIC, UFMT_EMPTY, UFMT_SCIDBL,
UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, UFMT_UCHAR,
UFMT_EMPTY, UFMT_CURRENCY, UFMT_EMPTY, UFMT_EMPTY,
/* 0x50 */
UFMT_PERCENT, UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY,
UFMT_TIME, UFMT_USTRING, UFMT_SPELLOUT, UFMT_EMPTY,
UFMT_HEX, UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY,
UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY,
/* 0x60 */
UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, UFMT_CHAR,
UFMT_INT, UFMT_SCIENTIFIC, UFMT_DOUBLE, UFMT_SCIDBL,
UFMT_EMPTY, UFMT_INT, UFMT_EMPTY, UFMT_EMPTY,
UFMT_EMPTY, UFMT_EMPTY, UFMT_COUNT, UFMT_OCTAL,
/* 0x70 */
UFMT_POINTER, UFMT_EMPTY, UFMT_EMPTY, UFMT_STRING,
UFMT_EMPTY, UFMT_UINT, UFMT_EMPTY, UFMT_EMPTY,
UFMT_HEX, UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY,
UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY,
};
static const u_printf_stream_handler g_sprintf_stream_handler = {
u_sprintf_write,
u_sprintf_pad_and_justify
};
U_CAPI int32_t U_EXPORT2 /* U_CAPI ... U_EXPORT2 added by Peter Kirk 17 Nov 2001 */
u_vsnprintf_u(UChar *buffer,
int32_t count,
const char *locale,
const UChar *patternSpecification,
va_list ap)
{
const UChar *alias = patternSpecification; /* alias the pattern */
const UChar *lastAlias;
int32_t patCount;
int32_t written = 0; /* haven't written anything yet */
uint16_t handlerNum;
ufmt_args args;
u_localized_string outStr;
u_printf_spec spec;
ufmt_type_info info;
u_printf_handler *handler;
if (count < 0) {
count = INT32_MAX;
}
outStr.str = buffer;
outStr.len = count;
outStr.available = count;
/* if locale is 0, use the default */
if(locale == 0) {
locale = uloc_getDefault();
}
if(u_locbund_init(&outStr.fBundle, locale) == 0) {
return 0;
}
/* iterate through the pattern */
while(outStr.available > 0) {
/* find the next '%' */
lastAlias = alias;
while(*alias != UP_PERCENT && *alias != 0x0000) {
alias++;
}
/* write any characters before the '%' */
if(alias > lastAlias) {
written += (*g_sprintf_stream_handler.write)(&outStr, lastAlias, (int32_t)(alias - lastAlias));
}
/* break if at end of string */
if(*alias == 0x0000) {
break;
}
/* parse the specifier */
patCount = u_printf_parse_spec(alias, &spec);
/* fill in the precision and width, if specified out of line */
/* width specified out of line */
if(spec.fInfo.fWidth == -2) {
if(spec.fWidthPos == -1) {
/* read the width from the argument list */
spec.fInfo.fWidth = va_arg(ap, int);
}
else {
/* handle positional parameter */
}
/* if it's negative, take the absolute value and set left alignment */
if(spec.fInfo.fWidth < 0) {
spec.fInfo.fWidth *= -1;
spec.fInfo.fLeft = TRUE;
}
}
/* precision specified out of line */
if(spec.fInfo.fPrecision == -2) {
if(spec.fPrecisionPos == -1) {
/* read the precision from the argument list */
spec.fInfo.fPrecision = va_arg(ap, int);
}
else {
/* handle positional parameter */
}
/* if it's negative, set it to zero */
if(spec.fInfo.fPrecision < 0)
spec.fInfo.fPrecision = 0;
}
handlerNum = (uint16_t)(spec.fInfo.fSpec - UPRINTF_BASE_FMT_HANDLERS);
if (handlerNum < UPRINTF_NUM_FMT_HANDLERS) {
/* query the info function for argument information */
info = g_u_printf_infos[ handlerNum ].info;
if(info > ufmt_simple_percent) {
switch(info) {
case ufmt_count:
/* set the spec's width to the # of chars written */
spec.fInfo.fWidth = written;
case ufmt_char:
case ufmt_uchar:
case ufmt_int:
args.intValue = va_arg(ap, int);
break;
case ufmt_wchar:
args.wcharValue = va_arg(ap, wchar_t);
break;
case ufmt_string:
args.ptrValue = va_arg(ap, char*);
break;
case ufmt_wstring:
args.ptrValue = va_arg(ap, wchar_t*);
break;
case ufmt_ustring:
args.ptrValue = va_arg(ap, UChar*);
break;
case ufmt_pointer:
args.ptrValue = va_arg(ap, void*);
break;
case ufmt_float:
args.floatValue = (float) va_arg(ap, double);
break;
case ufmt_double:
args.doubleValue = va_arg(ap, double);
break;
case ufmt_date:
args.dateValue = va_arg(ap, UDate);
break;
default:
break; /* Should never get here */
}
}
/* call the handler function */
handler = g_u_printf_infos[ handlerNum ].handler;
if(handler != 0) {
written += (*handler)(&g_sprintf_stream_handler, &outStr, &outStr.fBundle, &spec.fInfo, &args);
}
else {
/* just echo unknown tags */
written += (*g_sprintf_stream_handler.write)(&outStr, lastAlias, (int32_t)(alias - lastAlias));
}
}
else {
/* just echo unknown tags */
written += (*g_sprintf_stream_handler.write)(&outStr, lastAlias, (int32_t)(alias - lastAlias));
}
/* update the pointer in pattern and continue */
alias += patCount;
}
/* Terminate the buffer, if there's room. */
if (outStr.available > 0) {
buffer[outStr.len - outStr.available] = 0x0000;
}
/* Release the cloned bundle, if we cloned it. */
u_locbund_close(&outStr.fBundle);
/* return # of UChars written */
return written;
}
#endif /* #if !UCONFIG_NO_FORMATTING */
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