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node/deps/icu-small/source/io/uprntf_p.c

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/*
******************************************************************************
*
* Copyright (C) 1998-2016, International Business Machines
* Corporation and others. All Rights Reserved.
*
******************************************************************************
*
* File uprntf_p.c
*
* Modification History:
*
* Date Name Description
* 11/23/98 stephen Creation.
* 03/12/99 stephen Modified for new C API.
* 08/07/2003 george Reunify printf implementations
******************************************************************************
*/
#include "unicode/utypes.h"
#if !UCONFIG_NO_FORMATTING && !UCONFIG_NO_CONVERSION
#include "unicode/ustring.h"
#include "unicode/utf16.h"
#include "uprintf.h"
#include "ufmt_cmn.h"
#include "cmemory.h"
#include "putilimp.h"
/* 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}
/* V */
#define UFMT_SPELLOUT {ufmt_double, u_printf_spellout_handler}
/* P */
#define UFMT_PERCENT {ufmt_double, u_printf_percent_handler}
/* C K is old format */
#define UFMT_UCHAR {ufmt_uchar, u_printf_uchar_handler}
/* S U is old format */
#define UFMT_USTRING {ufmt_ustring, u_printf_ustring_handler}
#define UFMT_EMPTY {ufmt_empty, NULL}
/**
* A u_printf handler function.
* A u_printf handler is responsible for handling a single u_printf
* format specification, for example 'd' or 's'.
* @param stream The UFILE to which to write output.
* @param info A pointer to a <TT>u_printf_spec_info</TT> struct containing
* information on the format specification.
* @param args A pointer to the argument data
* @return The number of Unicode characters written to <TT>stream</TT>.
*/
typedef int32_t U_EXPORT2
u_printf_handler(const u_printf_stream_handler *handler,
void *context,
ULocaleBundle *formatBundle,
const u_printf_spec_info *info,
const ufmt_args *args);
typedef struct u_printf_info {
ufmt_type_info info;
u_printf_handler *handler;
} u_printf_info;
/**
* Struct encapsulating a single uprintf format specification.
*/
typedef struct u_printf_spec {
u_printf_spec_info fInfo; /* Information on this spec */
int32_t fWidthPos; /* Position of width in arg list */
int32_t fPrecisionPos; /* Position of precision in arg list */
int32_t fArgPos; /* Position of data in arg list */
} u_printf_spec;
#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}; /* " " */
/* 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,
UChar *prefixBuffer,
int32_t *prefixBufLen,
UErrorCode *status)
{
if(info->fShowSign) {
*prefixBufLen = unum_getTextAttribute(format,
UNUM_POSITIVE_PREFIX,
prefixBuffer,
*prefixBufLen,
status);
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,
UPRV_LENGTHOF(plusSymbol),
status);
unum_setTextAttribute(format,
UNUM_POSITIVE_PREFIX,
plusSymbol,
symbolLen,
status);
}
}
else {
*prefixBufLen = 0;
}
}
static void
u_printf_reset_sign(UNumberFormat *format,
const u_printf_spec_info *info,
UChar *prefixBuffer,
int32_t *prefixBufLen,
UErrorCode *status)
{
if(info->fShowSign) {
unum_setTextAttribute(format,
UNUM_POSITIVE_PREFIX,
prefixBuffer,
*prefixBufLen,
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,
UPRV_LENGTHOF(buffer));
}
}
else {
s = (UChar *)gNullStr;
}
len = u_strlen(s);
/* width = minimum # of characters to write */
/* precision = maximum # of characters to write */
if (info->fPrecision != -1 && info->fPrecision < len) {
len = info->fPrecision;
}
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[U16_MAX_LENGTH+1];
int32_t len = 1, written;
unsigned char arg = (unsigned char)(args[0].int64Value);
/* convert from default codepage to Unicode */
ufmt_defaultCPToUnicode((const char *)&arg, 2, s, UPRV_LENGTHOF(s));
/* 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 is ignored when handling a char */
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];
UChar prefixBuffer[UPRINTF_BUFFER_SIZE];
int32_t prefixBufferLen = sizeof(prefixBuffer);
int32_t minDecimalDigits;
int32_t maxDecimalDigits;
int32_t resultLen;
UErrorCode status = U_ZERO_ERROR;
prefixBuffer[0] = 0;
/* 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->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 */
if (info->fShowSign) {
u_printf_set_sign(format, info, prefixBuffer, &prefixBufferLen, &status);
}
/* format the number */
resultLen = unum_formatDouble(format, num, result, UPRINTF_BUFFER_SIZE, 0, &status);
if (U_FAILURE(status)) {
resultLen = 0;
}
/* restore the number format */
/* TODO: Is this needed? */
unum_setAttribute(format, UNUM_MIN_FRACTION_DIGITS, minDecimalDigits);
unum_setAttribute(format, UNUM_MAX_FRACTION_DIGITS, maxDecimalDigits);
if (info->fShowSign) {
/* Reset back to original value regardless of what the error was */
UErrorCode localStatus = U_ZERO_ERROR;
u_printf_reset_sign(format, info, prefixBuffer, &prefixBufferLen, &localStatus);
}
return handler->pad_and_justify(context, info, result, resultLen);
}
/* 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)
{
int64_t num = args[0].int64Value;
UNumberFormat *format;
UChar result[UPRINTF_BUFFER_SIZE];
UChar prefixBuffer[UPRINTF_BUFFER_SIZE];
int32_t prefixBufferLen = sizeof(prefixBuffer);
int32_t minDigits = -1;
int32_t resultLen;
UErrorCode status = U_ZERO_ERROR;
prefixBuffer[0] = 0;
/* mask off any necessary bits */
if (info->fIsShort)
num = (int16_t)num;
else if (!info->fIsLongLong)
num = (int32_t)num;
/* 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, prefixBuffer, &prefixBufferLen, &status);
}
/* format the number */
resultLen = unum_formatInt64(format, num, result, UPRINTF_BUFFER_SIZE, 0, &status);
if (U_FAILURE(status)) {
resultLen = 0;
}
/* restore the number format */
if (minDigits != -1) {
unum_setAttribute(format, UNUM_MIN_INTEGER_DIGITS, minDigits);
}
if (info->fShowSign) {
/* Reset back to original value regardless of what the error was */
UErrorCode localStatus = U_ZERO_ERROR;
u_printf_reset_sign(format, info, prefixBuffer, &prefixBufferLen, &localStatus);
}
return handler->pad_and_justify(context, info, result, resultLen);
}
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)
{
int64_t num = args[0].int64Value;
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->fIsLongLong)
num &= UINT32_MAX;
/* format the number, preserving the minimum # of digits */
ufmt_64tou(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)
{
int64_t num = args[0].int64Value;
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->fIsLongLong)
num &= UINT32_MAX;
/* format the number, preserving the minimum # of digits */
ufmt_64tou(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)
{
int64_t num = args[0].int64Value;
UNumberFormat *format;
UChar result[UPRINTF_BUFFER_SIZE];
int32_t minDigits = -1;
int32_t resultLen;
UErrorCode status = U_ZERO_ERROR;
/* TODO: Fix this once uint64_t can be formatted. */
if (info->fIsShort)
num &= UINT16_MAX;
else if (!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);
}
/* To mirror other stdio implementations, we ignore the sign argument */
/* format the number */
resultLen = unum_formatInt64(format, num, result, UPRINTF_BUFFER_SIZE, 0, &status);
if (U_FAILURE(status)) {
resultLen = 0;
}
/* restore the number format */
if (minDigits != -1) {
unum_setAttribute(format, UNUM_MIN_INTEGER_DIGITS, minDigits);
}
return handler->pad_and_justify(context, info, result, resultLen);
}
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)
{
UChar result[UPRINTF_BUFFER_SIZE];
int32_t len = UPRINTF_BUFFER_SIZE;
/* format the pointer in hex */
ufmt_ptou(result, &len, args[0].ptrValue, 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];
UChar prefixBuffer[UPRINTF_BUFFER_SIZE];
int32_t prefixBufferLen = sizeof(prefixBuffer);
int32_t minDecimalDigits;
int32_t maxDecimalDigits;
UErrorCode status = U_ZERO_ERROR;
UChar srcExpBuf[UPRINTF_SYMBOL_BUFFER_SIZE];
int32_t srcLen, expLen;
int32_t resultLen;
UChar expBuf[UPRINTF_SYMBOL_BUFFER_SIZE];
prefixBuffer[0] = 0;
/* 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 */
if (info->fOrigSpec == (UChar)0x65 /* e */ || info->fOrigSpec == (UChar)0x45 /* E */) {
unum_setAttribute(format, UNUM_FRACTION_DIGITS, info->fPrecision);
}
else {
unum_setAttribute(format, UNUM_MIN_FRACTION_DIGITS, 1);
unum_setAttribute(format, UNUM_MAX_FRACTION_DIGITS, info->fPrecision);
}
}
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 */
if (info->fShowSign) {
u_printf_set_sign(format, info, prefixBuffer, &prefixBufferLen, &status);
}
/* format the number */
resultLen = unum_formatDouble(format, num, result, UPRINTF_BUFFER_SIZE, 0, &status);
if (U_FAILURE(status)) {
resultLen = 0;
}
/* restore the number format */
/* TODO: Is this needed? */
unum_setAttribute(format, UNUM_MIN_FRACTION_DIGITS, minDecimalDigits);
unum_setAttribute(format, UNUM_MAX_FRACTION_DIGITS, maxDecimalDigits);
/* Since we're the only one using the scientific
format, we don't need to save the old exponent value. */
/*unum_setSymbol(format,
UNUM_EXPONENTIAL_SYMBOL,
srcExpBuf,
srcLen,
&status);*/
if (info->fShowSign) {
/* Reset back to original value regardless of what the error was */
UErrorCode localStatus = U_ZERO_ERROR;
u_printf_reset_sign(format, info, prefixBuffer, &prefixBufferLen, &localStatus);
}
return handler->pad_and_justify(context, info, result, resultLen);
}
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];
UChar prefixBuffer[UPRINTF_BUFFER_SIZE];
int32_t prefixBufferLen = sizeof(prefixBuffer);
int32_t minDecimalDigits;
int32_t maxDecimalDigits;
int32_t resultLen;
UErrorCode status = U_ZERO_ERROR;
prefixBuffer[0] = 0;
/* 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->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 */
if (info->fShowSign) {
u_printf_set_sign(format, info, prefixBuffer, &prefixBufferLen, &status);
}
/* format the number */
resultLen = unum_formatDouble(format, num, result, UPRINTF_BUFFER_SIZE, 0, &status);
if (U_FAILURE(status)) {
resultLen = 0;
}
/* restore the number format */
/* TODO: Is this needed? */
unum_setAttribute(format, UNUM_MIN_FRACTION_DIGITS, minDecimalDigits);
unum_setAttribute(format, UNUM_MAX_FRACTION_DIGITS, maxDecimalDigits);
if (info->fShowSign) {
/* Reset back to original value regardless of what the error was */
UErrorCode localStatus = U_ZERO_ERROR;
u_printf_reset_sign(format, info, prefixBuffer, &prefixBufferLen, &localStatus);
}
return handler->pad_and_justify(context, info, result, resultLen);
}
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 */
if (info->fPrecision != -1 && info->fPrecision < len) {
len = info->fPrecision;
}
/* 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].int64Value);
/* width = minimum # of characters to write */
/* precision = maximum # of characters to write */
/* precision is ignored when handling a uchar */
/* 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;
int32_t retVal;
UNumberFormat *format;
int32_t maxSigDecimalDigits, significantDigits;
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 */
retVal = 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;
if (scidbl_info.fPrecision == -1) {
scidbl_info.fPrecision = 5;
}
/* call the scientific handler */
retVal = u_printf_scientific_handler(handler, context, formatBundle, &scidbl_info, args);
}
else {
format = u_locbund_getNumberFormat(formatBundle, UNUM_DECIMAL);
/* Check for null pointer */
if (format == NULL) {
return 0;
}
maxSigDecimalDigits = unum_getAttribute(format, UNUM_MAX_SIGNIFICANT_DIGITS);
significantDigits = scidbl_info.fPrecision;
/* use 'f' notation */
scidbl_info.fSpec = 0x0066;
if (significantDigits == -1) {
significantDigits = 6;
}
unum_setAttribute(format, UNUM_SIGNIFICANT_DIGITS_USED, TRUE);
unum_setAttribute(format, UNUM_MAX_SIGNIFICANT_DIGITS, significantDigits);
/* call the double handler */
retVal = u_printf_double_handler(handler, context, formatBundle, &scidbl_info, args);
unum_setAttribute(format, UNUM_MAX_SIGNIFICANT_DIGITS, maxSigDecimalDigits);
unum_setAttribute(format, UNUM_SIGNIFICANT_DIGITS_USED, FALSE);
}
return retVal;
}
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)
{
int32_t *count = (int32_t*)(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];
UChar prefixBuffer[UPRINTF_BUFFER_SIZE];
int32_t prefixBufferLen = sizeof(prefixBuffer);
int32_t minDecimalDigits;
int32_t maxDecimalDigits;
int32_t resultLen;
UErrorCode status = U_ZERO_ERROR;
prefixBuffer[0] = 0;
/* 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->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 */
if (info->fShowSign) {
u_printf_set_sign(format, info, prefixBuffer, &prefixBufferLen, &status);
}
/* format the number */
resultLen = unum_formatDouble(format, num, result, UPRINTF_BUFFER_SIZE, 0, &status);
if (U_FAILURE(status)) {
resultLen = 0;
}
/* restore the number format */
/* TODO: Is this needed? */
unum_setAttribute(format, UNUM_MIN_FRACTION_DIGITS, minDecimalDigits);
unum_setAttribute(format, UNUM_MAX_FRACTION_DIGITS, maxDecimalDigits);
if (info->fShowSign) {
/* Reset back to original value regardless of what the error was */
UErrorCode localStatus = U_ZERO_ERROR;
u_printf_reset_sign(format, info, prefixBuffer, &prefixBufferLen, &localStatus);
}
return handler->pad_and_justify(context, info, result, resultLen);
}
/* 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_UCHAR,
UFMT_EMPTY, UFMT_SCIENTIFIC, UFMT_EMPTY, UFMT_SCIDBL,
#ifdef U_USE_OBSOLETE_IO_FORMATTING
UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, UFMT_UCHAR/*deprecated*/,
#else
UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY,
#endif
UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY,
/* 0x50 */
UFMT_PERCENT, UFMT_EMPTY, UFMT_EMPTY, UFMT_USTRING,
#ifdef U_USE_OBSOLETE_IO_FORMATTING
UFMT_EMPTY, UFMT_USTRING/*deprecated*/,UFMT_SPELLOUT, UFMT_EMPTY,
#else
UFMT_EMPTY, UFMT_EMPTY, UFMT_SPELLOUT, UFMT_EMPTY,
#endif
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,
};
/* flag characters for uprintf */
#define FLAG_MINUS 0x002D
#define FLAG_PLUS 0x002B
#define FLAG_SPACE 0x0020
#define FLAG_POUND 0x0023
#define FLAG_ZERO 0x0030
#define FLAG_PAREN 0x0028
#define ISFLAG(s) (s) == FLAG_MINUS || \
(s) == FLAG_PLUS || \
(s) == FLAG_SPACE || \
(s) == FLAG_POUND || \
(s) == FLAG_ZERO || \
(s) == FLAG_PAREN
/* special characters for uprintf */
#define SPEC_ASTERISK 0x002A
#define SPEC_DOLLARSIGN 0x0024
#define SPEC_PERIOD 0x002E
#define SPEC_PERCENT 0x0025
/* unicode digits */
#define DIGIT_ZERO 0x0030
#define DIGIT_ONE 0x0031
#define DIGIT_TWO 0x0032
#define DIGIT_THREE 0x0033
#define DIGIT_FOUR 0x0034
#define DIGIT_FIVE 0x0035
#define DIGIT_SIX 0x0036
#define DIGIT_SEVEN 0x0037
#define DIGIT_EIGHT 0x0038
#define DIGIT_NINE 0x0039
#define ISDIGIT(s) (s) == DIGIT_ZERO || \
(s) == DIGIT_ONE || \
(s) == DIGIT_TWO || \
(s) == DIGIT_THREE || \
(s) == DIGIT_FOUR || \
(s) == DIGIT_FIVE || \
(s) == DIGIT_SIX || \
(s) == DIGIT_SEVEN || \
(s) == DIGIT_EIGHT || \
(s) == DIGIT_NINE
/* u_printf modifiers */
#define MOD_H 0x0068
#define MOD_LOWERL 0x006C
#define MOD_L 0x004C
#define ISMOD(s) (s) == MOD_H || \
(s) == MOD_LOWERL || \
(s) == MOD_L
/* Returns an array of the parsed argument type given in the format string. */
static ufmt_args* parseArguments(const UChar *alias, va_list ap, UErrorCode *status) {
ufmt_args *arglist = NULL;
ufmt_type_info *typelist = NULL;
UBool *islonglong = NULL;
int32_t size = 0;
int32_t pos = 0;
UChar type;
uint16_t handlerNum;
const UChar *aliasStart = alias;
/* get maximum number of arguments */
for(;;) {
/* find % */
while(*alias != UP_PERCENT && *alias != 0x0000) {
alias++;
}
if(*alias == 0x0000) {
break;
}
alias++;
/* handle the pos number */
if(ISDIGIT(*alias)) {
/* handle positional parameters */
if(ISDIGIT(*alias)) {
pos = (int) (*alias++ - DIGIT_ZERO);
while(ISDIGIT(*alias)) {
pos *= 10;
pos += (int) (*alias++ - DIGIT_ZERO);
}
}
/* if there is no '$', don't read anything */
if(*alias != SPEC_DOLLARSIGN) {
return NULL;
}
} else {
return NULL;
}
if (pos > size) {
size = pos;
}
}
/* create the parsed argument list */
typelist = (ufmt_type_info*)uprv_malloc(sizeof(ufmt_type_info) * size);
islonglong = (UBool*)uprv_malloc(sizeof(UBool) * size);
arglist = (ufmt_args*)uprv_malloc(sizeof(ufmt_args) * size);
/* If malloc failed, return NULL */
if (!typelist || !islonglong || !arglist) {
if (typelist) {
uprv_free(typelist);
}
if (islonglong) {
uprv_free(islonglong);
}
if (arglist) {
uprv_free(arglist);
}
*status = U_MEMORY_ALLOCATION_ERROR;
return NULL;
}
/* reset alias back to the beginning */
alias = aliasStart;
for(;;) {
/* find % */
while(*alias != UP_PERCENT && *alias != 0x0000) {
alias++;
}
if(*alias == 0x0000) {
break;
}
alias++;
/* handle positional parameters */
if(ISDIGIT(*alias)) {
pos = (int) (*alias++ - DIGIT_ZERO);
while(ISDIGIT(*alias)) {
pos *= 10;
pos += (int) (*alias++ - DIGIT_ZERO);
}
}
/* offset position by 1 */
pos--;
/* skip over everything except for the type */
while (ISMOD(*alias) || ISFLAG(*alias) || ISDIGIT(*alias) ||
*alias == SPEC_ASTERISK || *alias == SPEC_PERIOD || *alias == SPEC_DOLLARSIGN) {
islonglong[pos] = FALSE;
if (ISMOD(*alias)) {
alias++;
if (*alias == MOD_LOWERL) {
islonglong[pos] = TRUE;
}
}
alias++;
}
type = *alias;
/* store the argument type in the correct position of the parsed argument list */
handlerNum = (uint16_t)(type - UPRINTF_BASE_FMT_HANDLERS);
if (handlerNum < UPRINTF_NUM_FMT_HANDLERS) {
typelist[pos] = g_u_printf_infos[ handlerNum ].info;
} else {
typelist[pos] = ufmt_empty;
}
}
/* store argument in arglist */
for (pos = 0; pos < size; pos++) {
switch (typelist[pos]) {
case ufmt_string:
case ufmt_ustring:
case ufmt_pointer:
arglist[pos].ptrValue = va_arg(ap, void*);
break;
case ufmt_char:
case ufmt_uchar:
case ufmt_int:
if (islonglong[pos]) {
arglist[pos].int64Value = va_arg(ap, int64_t);
}
else {
arglist[pos].int64Value = va_arg(ap, int32_t);
}
break;
case ufmt_float:
arglist[pos].floatValue = (float) va_arg(ap, double);
break;
case ufmt_double:
arglist[pos].doubleValue = va_arg(ap, double);
break;
default:
/* else args is ignored */
arglist[pos].ptrValue = NULL;
break;
}
}
uprv_free(typelist);
uprv_free(islonglong);
return arglist;
}
/* We parse the argument list in Unicode */
U_CFUNC int32_t
u_printf_parse(const u_printf_stream_handler *streamHandler,
const UChar *fmt,
void *context,
u_localized_print_string *locStringContext,
ULocaleBundle *formatBundle,
int32_t *written,
va_list ap)
{
uint16_t handlerNum;
ufmt_args args;
ufmt_type_info argType;
u_printf_handler *handler;
u_printf_spec spec;
u_printf_spec_info *info = &(spec.fInfo);
const UChar *alias = fmt;
const UChar *backup;
const UChar *lastAlias;
const UChar *orgAlias = fmt;
/* parsed argument list */
ufmt_args *arglist = NULL; /* initialized it to avoid compiler warnings */
UErrorCode status = U_ZERO_ERROR;
if (!locStringContext || locStringContext->available >= 0) {
/* get the parsed list of argument types */
arglist = parseArguments(orgAlias, ap, &status);
/* Return error if parsing failed. */
if (U_FAILURE(status)) {
return -1;
}
}
/* iterate through the pattern */
while(!locStringContext || locStringContext->available >= 0) {
/* find the next '%' */
lastAlias = alias;
while(*alias != UP_PERCENT && *alias != 0x0000) {
alias++;
}
/* write any characters before the '%' */
if(alias > lastAlias) {
*written += (streamHandler->write)(context, lastAlias, (int32_t)(alias - lastAlias));
}
/* break if at end of string */
if(*alias == 0x0000) {
break;
}
/* initialize spec to default values */
spec.fWidthPos = -1;
spec.fPrecisionPos = -1;
spec.fArgPos = -1;
uprv_memset(info, 0, sizeof(*info));
info->fPrecision = -1;
info->fWidth = -1;
info->fPadChar = 0x0020;
/* skip over the initial '%' */
alias++;
/* Check for positional argument */
if(ISDIGIT(*alias)) {
/* Save the current position */
backup = alias;
/* handle positional parameters */
if(ISDIGIT(*alias)) {
spec.fArgPos = (int) (*alias++ - DIGIT_ZERO);
while(ISDIGIT(*alias)) {
spec.fArgPos *= 10;
spec.fArgPos += (int) (*alias++ - DIGIT_ZERO);
}
}
/* if there is no '$', don't read anything */
if(*alias != SPEC_DOLLARSIGN) {
spec.fArgPos = -1;
alias = backup;
}
/* munge the '$' */
else
alias++;
}
/* Get any format flags */
while(ISFLAG(*alias)) {
switch(*alias++) {
/* left justify */
case FLAG_MINUS:
info->fLeft = TRUE;
break;
/* always show sign */
case FLAG_PLUS:
info->fShowSign = TRUE;
break;
/* use space if no sign present */
case FLAG_SPACE:
info->fShowSign = TRUE;
info->fSpace = TRUE;
break;
/* use alternate form */
case FLAG_POUND:
info->fAlt = TRUE;
break;
/* pad with leading zeroes */
case FLAG_ZERO:
info->fZero = TRUE;
info->fPadChar = 0x0030;
break;
/* pad character specified */
case FLAG_PAREN:
/* TODO test that all four are numbers */
/* first four characters are hex values for pad char */
info->fPadChar = (UChar)ufmt_digitvalue(*alias++);
info->fPadChar = (UChar)((info->fPadChar * 16) + ufmt_digitvalue(*alias++));
info->fPadChar = (UChar)((info->fPadChar * 16) + ufmt_digitvalue(*alias++));
info->fPadChar = (UChar)((info->fPadChar * 16) + ufmt_digitvalue(*alias++));
/* final character is ignored */
alias++;
break;
}
}
/* Get the width */
/* width is specified out of line */
if(*alias == SPEC_ASTERISK) {
info->fWidth = -2;
/* Skip the '*' */
alias++;
/* Save the current position */
backup = alias;
/* handle positional parameters */
if(ISDIGIT(*alias)) {
spec.fWidthPos = (int) (*alias++ - DIGIT_ZERO);
while(ISDIGIT(*alias)) {
spec.fWidthPos *= 10;
spec.fWidthPos += (int) (*alias++ - DIGIT_ZERO);
}
}
/* if there is no '$', don't read anything */
if(*alias != SPEC_DOLLARSIGN) {
spec.fWidthPos = -1;
alias = backup;
}
/* munge the '$' */
else
alias++;
}
/* read the width, if present */
else if(ISDIGIT(*alias)){
info->fWidth = (int) (*alias++ - DIGIT_ZERO);
while(ISDIGIT(*alias)) {
info->fWidth *= 10;
info->fWidth += (int) (*alias++ - DIGIT_ZERO);
}
}
/* Get the precision */
if(*alias == SPEC_PERIOD) {
/* eat up the '.' */
alias++;
/* precision is specified out of line */
if(*alias == SPEC_ASTERISK) {
info->fPrecision = -2;
/* Skip the '*' */
alias++;
/* save the current position */
backup = alias;
/* handle positional parameters */
if(ISDIGIT(*alias)) {
spec.fPrecisionPos = (int) (*alias++ - DIGIT_ZERO);
while(ISDIGIT(*alias)) {
spec.fPrecisionPos *= 10;
spec.fPrecisionPos += (int) (*alias++ - DIGIT_ZERO);
}
/* if there is no '$', don't read anything */
if(*alias != SPEC_DOLLARSIGN) {
spec.fPrecisionPos = -1;
alias = backup;
}
else {
/* munge the '$' */
alias++;
}
}
}
/* read the precision */
else if(ISDIGIT(*alias)){
info->fPrecision = (int) (*alias++ - DIGIT_ZERO);
while(ISDIGIT(*alias)) {
info->fPrecision *= 10;
info->fPrecision += (int) (*alias++ - DIGIT_ZERO);
}
}
}
/* Get any modifiers */
if(ISMOD(*alias)) {
switch(*alias++) {
/* short */
case MOD_H:
info->fIsShort = TRUE;
break;
/* long or long long */
case MOD_LOWERL:
if(*alias == MOD_LOWERL) {
info->fIsLongLong = TRUE;
/* skip over the next 'l' */
alias++;
}
else
info->fIsLong = TRUE;
break;
/* long double */
case MOD_L:
info->fIsLongDouble = TRUE;
break;
}
}
/* finally, get the specifier letter */
info->fSpec = *alias++;
info->fOrigSpec = info->fSpec;
/* 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 */
info->fWidth = va_arg(ap, int32_t);
}
/* else handle positional parameter */
/* if it's negative, take the absolute value and set left alignment */
if(info->fWidth < 0) {
info->fWidth *= -1; /* Make positive */
info->fLeft = TRUE;
}
}
/* precision specified out of line */
if(info->fPrecision == -2) {
if(spec.fPrecisionPos == -1) {
/* read the precision from the argument list */
info->fPrecision = va_arg(ap, int32_t);
}
/* else handle positional parameter */
/* if it's negative, set it to zero */
if(info->fPrecision < 0)
info->fPrecision = 0;
}
handlerNum = (uint16_t)(info->fSpec - UPRINTF_BASE_FMT_HANDLERS);
if (handlerNum < UPRINTF_NUM_FMT_HANDLERS) {
/* query the info function for argument information */
argType = g_u_printf_infos[ handlerNum ].info;
/* goto the correct argument on arg_list if position is specified */
if (spec.fArgPos > 0) {
/* offset position by 1 */
spec.fArgPos--;
switch(argType) {
case ufmt_count:
/* set the spec's width to the # of chars written */
info->fWidth = *written;
/* fall through to set the pointer */
U_FALLTHROUGH;
case ufmt_string:
case ufmt_ustring:
case ufmt_pointer:
args.ptrValue = arglist[spec.fArgPos].ptrValue;
break;
case ufmt_char:
case ufmt_uchar:
case ufmt_int:
args.int64Value = arglist[spec.fArgPos].int64Value;
break;
case ufmt_float:
args.floatValue = arglist[spec.fArgPos].floatValue;
break;
case ufmt_double:
args.doubleValue = arglist[spec.fArgPos].doubleValue;
break;
default:
/* else args is ignored */
args.ptrValue = NULL;
break;
}
} else { /* no positional argument specified */
switch(argType) {
case ufmt_count:
/* set the spec's width to the # of chars written */
info->fWidth = *written;
/* fall through to set the pointer */
U_FALLTHROUGH;
case ufmt_string:
case ufmt_ustring:
case ufmt_pointer:
args.ptrValue = va_arg(ap, void*);
break;
case ufmt_char:
case ufmt_uchar:
case ufmt_int:
if (info->fIsLongLong) {
args.int64Value = va_arg(ap, int64_t);
}
else {
args.int64Value = va_arg(ap, int32_t);
}
break;
case ufmt_float:
args.floatValue = (float) va_arg(ap, double);
break;
case ufmt_double:
args.doubleValue = va_arg(ap, double);
break;
default:
/* else args is ignored */
args.ptrValue = NULL;
break;
}
}
/* call the handler function */
handler = g_u_printf_infos[ handlerNum ].handler;
if(handler != 0) {
*written += (*handler)(streamHandler, context, formatBundle, info, &args);
}
else {
/* just echo unknown tags */
*written += (streamHandler->write)(context, fmt, (int32_t)(alias - lastAlias));
}
}
else {
/* just echo unknown tags */
*written += (streamHandler->write)(context, fmt, (int32_t)(alias - lastAlias));
}
}
/* delete parsed argument list */
if (arglist != NULL) {
uprv_free(arglist);
}
/* return # of characters in this format that have been parsed. */
return (int32_t)(alias - fmt);
}
#endif /* #if !UCONFIG_NO_FORMATTING */