scuffed-code/icu4c/source/i18n/msgfmt.cpp
2002-07-09 12:47:45 +00:00

1433 lines
47 KiB
C++

/*
*******************************************************************************
* Copyright (C) 1997-1999, International Business Machines Corporation and *
* others. All Rights Reserved. *
*******************************************************************************
*
* File MSGFMT.CPP
*
* Modification History:
*
* Date Name Description
* 02/19/97 aliu Converted from java.
* 03/20/97 helena Finished first cut of implementation.
* 04/10/97 aliu Made to work on AIX. Added stoi to replace wtoi.
* 06/11/97 helena Fixed addPattern to take the pattern correctly.
* 06/17/97 helena Fixed the getPattern to return the correct pattern.
* 07/09/97 helena Made ParsePosition into a class.
* 02/22/99 stephen Removed character literals for EBCDIC safety
********************************************************************************
*/
#include "unicode/msgfmt.h"
#include "unicode/decimfmt.h"
#include "unicode/datefmt.h"
#include "unicode/smpdtfmt.h"
#include "unicode/choicfmt.h"
#include "unicode/ustring.h"
#include "unicode/ucnv_err.h"
#include "unicode/uchar.h"
#include "ustrfmt.h"
#include "cmemory.h"
// *****************************************************************************
// class MessageFormat
// *****************************************************************************
#define COMMA ((UChar)0x002C)
#define SINGLE_QUOTE ((UChar)0x0027)
#define LEFT_CURLY_BRACE ((UChar)0x007B)
#define RIGHT_CURLY_BRACE ((UChar)0x007D)
//---------------------------------------
// static data
static const UChar g_umsg_number[] = {
0x6E, 0x75, 0x6D, 0x62, 0x65, 0x72, 0 /* "number" */
};
static const UChar g_umsg_date[] = {
0x64, 0x61, 0x74, 0x65, 0 /* "date" */
};
static const UChar g_umsg_time[] = {
0x74, 0x69, 0x6D, 0x65, 0 /* "time" */
};
static const UChar g_umsg_choice[] = {
0x63, 0x68, 0x6F, 0x69, 0x63, 0x65, 0 /* "choice" */
};
// MessageFormat Type List Number, Date, Time or Choice
static const UChar * const g_umsgTypeList[] = {
NULL, NULL, g_umsg_number,
NULL, g_umsg_date, NULL,
g_umsg_time, NULL, g_umsg_choice
};
static const UChar g_umsg_currency[] = {
0x63, 0x75, 0x72, 0x72, 0x65, 0x6E, 0x63, 0x79, 0 /* "currency" */
};
static const UChar g_umsg_percent[] = {
0x70, 0x65, 0x72, 0x63, 0x65, 0x6E, 0x74, 0 /* "percent" */
};
static const UChar g_umsg_integer[] = {
0x69, 0x6E, 0x74, 0x65, 0x67, 0x65, 0x72, 0 /* "integer" */
};
// NumberFormat modifier list, default, currency, percent or integer
static const UChar * const g_umsgModifierList[] = {
NULL, NULL, g_umsg_currency,
NULL, g_umsg_percent, NULL,
g_umsg_integer, NULL, NULL
};
static const UChar g_umsg_short[] = {
0x73, 0x68, 0x6F, 0x72, 0x74, 0 /* "short" */
};
static const UChar g_umsg_medium[] = {
0x6D, 0x65, 0x64, 0x69, 0x75, 0x6D, 0 /* "medium" */
};
static const UChar g_umsg_long[] = {
0x6C, 0x6F, 0x6E, 0x67, 0 /* "long" */
};
static const UChar g_umsg_full[] = {
0x66, 0x75, 0x6C, 0x6C, 0 /* "full" */
};
// DateFormat modifier list, default, short, medium, long or full
static const UChar * const g_umsgDateModifierList[] = {
NULL, NULL, g_umsg_short,
NULL, g_umsg_medium, NULL,
g_umsg_long, NULL, g_umsg_full
};
static const int32_t g_umsgListLength = 9;
U_NAMESPACE_BEGIN
// -------------------------------------
const char MessageFormat::fgClassID = 0; // Value is irrelevant
// -------------------------------------
// Creates a MessageFormat instance based on the pattern.
MessageFormat::MessageFormat(const UnicodeString& pattern,
UErrorCode& success)
: fLocale(Locale::getDefault()), // Uses the default locale
fOffsets(NULL),
fCount(kMaxFormat),
fArgumentNumbers(NULL)
{
fOffsets = (int32_t*) uprv_malloc( sizeof(int32_t) * fCount );
/* test for NULL */
if (fOffsets == 0) {
success = U_MEMORY_ALLOCATION_ERROR;
return;
}
fArgumentNumbers = (int32_t*) uprv_malloc( sizeof(int32_t) * fCount );
/* test for NULL */
if (fArgumentNumbers == 0) {
success = U_MEMORY_ALLOCATION_ERROR;
delete fOffsets;
return;
}
for (int32_t i = 0; i < fCount; i++) {
fFormats[i] = NULL; // Format instances
fOffsets[i] = 0; // Starting offset
fArgumentNumbers[i] = 0; // Argument numbers.
}
applyPattern(pattern, success);
}
MessageFormat::MessageFormat(const UnicodeString& pattern,
const Locale& newLocale,
UErrorCode& success)
: fLocale(newLocale), // Uses the default locale
fOffsets(NULL),
fCount(kMaxFormat),
fArgumentNumbers(NULL)
{
fOffsets = (int32_t*) uprv_malloc( sizeof(int32_t) * fCount );
/* test for NULL */
if (fOffsets == 0) {
success = U_MEMORY_ALLOCATION_ERROR;
return;
}
fArgumentNumbers = (int32_t*) uprv_malloc( sizeof(int32_t) * fCount );
/* test for NULL */
if (fArgumentNumbers == 0) {
success = U_MEMORY_ALLOCATION_ERROR;
delete fOffsets;
return;
}
for (int32_t i = 0; i < fCount; i++) {
fFormats[i] = NULL; // Format instances
fOffsets[i] = 0; // Starting offset
fArgumentNumbers[i] = 0; // Argument numbers.
}
applyPattern(pattern, success);
}
MessageFormat::MessageFormat(const UnicodeString& pattern,
const Locale& newLocale,
UParseError& parseError,
UErrorCode& success)
: fLocale(newLocale), // Uses the default locale
fOffsets(NULL),
fCount(kMaxFormat),
fArgumentNumbers(NULL)
{
fOffsets = (int32_t*) uprv_malloc( sizeof(int32_t) * fCount );
/* test for NULL */
if (fOffsets == 0) {
success = U_MEMORY_ALLOCATION_ERROR;
return;
}
fArgumentNumbers = (int32_t*) uprv_malloc( sizeof(int32_t) * fCount );
/* test for NULL */
if (fArgumentNumbers == 0) {
success = U_MEMORY_ALLOCATION_ERROR;
delete fOffsets;
return;
}
for (int32_t i = 0; i < fCount; i++) {
fFormats[i] = NULL; // Format instances
fOffsets[i] = 0; // Starting offset
fArgumentNumbers[i] = 0; // Argument numbers.
}
applyPattern(pattern,parseError, success);
}
MessageFormat::~MessageFormat()
{
for (int32_t i = 0; i < fCount; i++) {
if (fFormats[i]) {
delete fFormats[i];
}
}
uprv_free(fOffsets);
uprv_free(fArgumentNumbers);
fCount = 0;
}
// -------------------------------------
// copy constructor
MessageFormat::MessageFormat(const MessageFormat& that)
: Format(that),
fLocale(that.fLocale),
fPattern(that.fPattern),
fOffsets((int32_t *)uprv_malloc(that.fCount * sizeof(int32_t))),
fCount(that.fCount),
fArgumentNumbers((int32_t *)uprv_malloc(that.fCount * sizeof(int32_t))),
fMaxOffset(that.fMaxOffset)
{
// Sets up the format instance array, offsets and argument numbers.
for (int32_t i = 0; i < fCount; i++) {
fFormats[i] = NULL; // init since delete may be called
if (that.fFormats[i] != NULL) {
setFormat(i, *(that.fFormats[i]) ); // setFormat clones the format
}
fOffsets[i] = that.fOffsets[i];
fArgumentNumbers[i] = that.fArgumentNumbers[i];
}
}
// -------------------------------------
// assignment operator
const MessageFormat&
MessageFormat::operator=(const MessageFormat& that)
{
if (this != &that) {
// Calls the super class for assignment first.
Format::operator=(that);
// Cleans up the format array and the offsets, argument numbers.
for (int32_t j = 0; j < fCount; j++) {
delete fFormats[j];
fFormats[j] = NULL;
}
uprv_free(fOffsets);
fOffsets = NULL;
uprv_free(fArgumentNumbers);
fArgumentNumbers = NULL;
fPattern = that.fPattern;
fLocale = that.fLocale;
fCount = that.fCount;
fMaxOffset = that.fMaxOffset;
fOffsets = (int32_t*) uprv_malloc( sizeof(int32_t) * fCount );
fArgumentNumbers = (int32_t*) uprv_malloc( sizeof(int32_t) * fCount );
// Sets up the format instance array, offsets and argument numbers.
for (int32_t i = 0; i < fCount; i++) {
if (that.fFormats[i] == NULL) {
fFormats[i] = NULL;
}else{
adoptFormat(i, that.fFormats[i]->clone());
}
fOffsets[i] = that.fOffsets[i];
fArgumentNumbers[i] = that.fArgumentNumbers[i];
}
}
return *this;
}
UBool
MessageFormat::operator==(const Format& that) const
{
if (this == &that) return TRUE;
// Are the instances derived from the same Format class?
if (getStaticClassID() != that.getDynamicClassID()) return FALSE; // not the same class
// Calls the super class for equality check first.
if (!Format::operator==(that)) return FALSE;
MessageFormat& thatAlias = (MessageFormat&)that;
// Checks the pattern, locale and array count of this MessageFormat object.
if (fMaxOffset != thatAlias.fMaxOffset) return FALSE;
if (fPattern != thatAlias.fPattern) return FALSE;
if (fLocale != thatAlias.fLocale) return FALSE;
if (fCount != thatAlias.fCount) return FALSE;
// Checks each element in the arrays for equality last.
for (int32_t i = 0; i < fCount; i++) {
if ((fFormats[i] != thatAlias.fFormats[i]) ||
(fOffsets[i] != thatAlias.fOffsets[i]) ||
(fArgumentNumbers[i] != thatAlias.fArgumentNumbers[i]))
return FALSE;
}
return TRUE;
}
// -------------------------------------
// Creates a copy of this MessageFormat, the caller owns the copy.
Format*
MessageFormat::clone() const
{
MessageFormat *aCopy = new MessageFormat(*this);
return aCopy;
}
// -------------------------------------
// Sets the locale of this MessageFormat object to theLocale.
void
MessageFormat::setLocale(const Locale& theLocale)
{
fLocale = theLocale;
}
// -------------------------------------
// Gets the locale of this MessageFormat object.
const Locale&
MessageFormat::getLocale() const
{
return fLocale;
}
#if 0
// -------------------------------------
// Applies the new pattern and returns an error if the pattern
// is not correct.
// For example, consider the pattern,
// "There {0,choice,0#are no files|1#is one file|1<are {0,number,integer} files}"
// The segments would look like the following,
// segments[0] == "There "
// segments[1] == "0"
// segments[2] == "{0,choice,0#are no files|1#is one file|1<are {0,number,integer}"
// segments[3] == " files"
void
MessageFormat::applyPattern(const UnicodeString& newPattern,
UErrorCode& success)
{
UnicodeString segments[4];
int32_t part = 0;
int32_t formatNumber = 0;
UBool inQuote = FALSE;
int32_t braceStack = 0;
fMaxOffset = -1;
for (int i = 0; i < newPattern.length(); ++i) {
UChar ch = newPattern[i];
if (part == 0) {
if (ch == SINGLE_QUOTE) {
if (i + 1 < newPattern.length()
&& newPattern[i+1] == SINGLE_QUOTE) {
segments[part] += ch; // handle doubles
++i;
} else {
inQuote = !inQuote;
}
} else if (ch == LEFT_CURLY_BRACE && !inQuote) {
part = 1;
} else {
segments[part] += ch;
}
} else if (inQuote) { // just copy quotes in parts
segments[part] += ch;
if (ch == SINGLE_QUOTE) {
inQuote = FALSE;
}
} else {
switch (ch) {
case COMMA:
if (part < 3)
part += 1;
else
segments[part] += ch;
break;
case LEFT_CURLY_BRACE:
++braceStack;
segments[part] += ch;
break;
case RIGHT_CURLY_BRACE:
if (braceStack == 0) {
part = 0;
makeFormat(/*i,*/ formatNumber, segments, success);
if(U_FAILURE(success))
return;
formatNumber++;
} else {
--braceStack;
segments[part] += ch;
}
break;
case SINGLE_QUOTE:
inQuote = TRUE;
// fall through, so we keep quotes in other parts
default:
segments[part] += ch;
break;
}
}
}
if (braceStack == 0 && part != 0) {
fMaxOffset = -1;
success = U_INVALID_FORMAT_ERROR;
return;
//throw new IllegalArgumentException("Unmatched braces in the pattern.");
}
fPattern = segments[0];
}
#endif
void
MessageFormat::applyPattern(const UnicodeString& newPattern,
UErrorCode& status)
{
UParseError parseError;
applyPattern(newPattern,parseError,status);
}
void
MessageFormat::applyPattern(const UnicodeString& newPattern,
UParseError& parseError,
UErrorCode& success)
{
if(U_FAILURE(success))
{
return;
}
UnicodeString segments[4];
int32_t part = 0;
int32_t maxFormatNumber = 0;
int32_t formatNumber = 0;
UBool inQuote = FALSE;
int32_t braceStack = 0;
int32_t i = 0;
fMaxOffset = -1;
// Clear error struct
parseError.offset = -1;
parseError.preContext[0] = parseError.postContext[0] = (UChar)0;
int32_t patLen = newPattern.length();
for (; i < patLen; ++i) {
int32_t currFormatNumber;
UChar ch = newPattern[i];
if (part == 0) {
if (ch == SINGLE_QUOTE) {
if (i + 1 < patLen && newPattern[i+1] == SINGLE_QUOTE) {
segments[part] += ch; // handle doubles
++i;
} else {
inQuote = !inQuote;
}
} else if (ch == LEFT_CURLY_BRACE && !inQuote) {
part = 1;
} else {
segments[part] += ch;
}
} else if (inQuote) { // just copy quotes in parts
segments[part] += ch;
if (ch == SINGLE_QUOTE) {
inQuote = FALSE;
}
} else {
switch (ch) {
case COMMA:
if (part < 3)
part += 1;
else
segments[part] += ch;
break;
case LEFT_CURLY_BRACE:
++braceStack;
segments[part] += ch;
break;
case RIGHT_CURLY_BRACE:
if (braceStack == 0) {
part = 0;
currFormatNumber = makeFormat(/*i,*/ formatNumber, segments, parseError,success);
if(U_FAILURE(success)){
syntaxError(newPattern,i,parseError);
return;
}
formatNumber++;
if (currFormatNumber > maxFormatNumber) {
maxFormatNumber = currFormatNumber;
}
} else {
--braceStack;
segments[part] += ch;
}
break;
case SINGLE_QUOTE:
inQuote = TRUE;
// fall through, so we keep quotes in other parts
default:
segments[part] += ch;
break;
}
}
}
if (braceStack == 0 && part != 0) {
fMaxOffset = -1;
success = U_UNMATCHED_BRACES;
syntaxError(newPattern,i,parseError);
return;
//throw new IllegalArgumentException("Unmatched braces in the pattern.");
}
fPattern = segments[0];
fListCount = maxFormatNumber + 1;
}
// -------------------------------------
// Converts this MessageFormat instance to a pattern.
UnicodeString&
MessageFormat::toPattern(UnicodeString& result) const
{
// later, make this more extensible
int32_t lastOffset = 0;
for (int i = 0; i <= fMaxOffset; ++i) {
copyAndFixQuotes(fPattern, lastOffset, fOffsets[i], result);
lastOffset = fOffsets[i];
result += LEFT_CURLY_BRACE;
// {sfb} check this later
//result += (UChar) (fArgumentNumbers[i] + '0');
UnicodeString temp;
result += itos(fArgumentNumbers[i], temp);
if (fFormats[i] == NULL) {
// do nothing, string format
}
else if (fFormats[i]->getDynamicClassID() == DecimalFormat::getStaticClassID()) {
UErrorCode status = U_ZERO_ERROR;
NumberFormat& formatAlias = *(NumberFormat*)fFormats[i];
NumberFormat *numberTemplate = NumberFormat::createInstance(fLocale, status);
NumberFormat *currencyTemplate = NumberFormat::createCurrencyInstance(fLocale, status);
NumberFormat *percentTemplate = NumberFormat::createPercentInstance(fLocale, status);
NumberFormat *integerTemplate = createIntegerFormat(fLocale, status);
result += COMMA;
result += g_umsg_number;
if (formatAlias != *numberTemplate) {
result += COMMA;
if (formatAlias == *currencyTemplate) {
result += g_umsg_currency;
}
else if (formatAlias == *percentTemplate) {
result += g_umsg_percent;
}
else if (formatAlias == *integerTemplate) {
result += g_umsg_integer;
}
else {
UnicodeString buffer;
result += ((DecimalFormat*)fFormats[i])->toPattern(buffer);
}
}
delete numberTemplate;
delete currencyTemplate;
delete percentTemplate;
delete integerTemplate;
}
else if (fFormats[i]->getDynamicClassID() == SimpleDateFormat::getStaticClassID()) {
DateFormat& formatAlias = *(DateFormat*)fFormats[i];
DateFormat *defaultDateTemplate = DateFormat::createDateInstance(DateFormat::kDefault, fLocale);
DateFormat *shortDateTemplate = DateFormat::createDateInstance(DateFormat::kShort, fLocale);
DateFormat *longDateTemplate = DateFormat::createDateInstance(DateFormat::kLong, fLocale);
DateFormat *fullDateTemplate = DateFormat::createDateInstance(DateFormat::kFull, fLocale);
DateFormat *defaultTimeTemplate = DateFormat::createTimeInstance(DateFormat::kDefault, fLocale);
DateFormat *shortTimeTemplate = DateFormat::createTimeInstance(DateFormat::kShort, fLocale);
DateFormat *longTimeTemplate = DateFormat::createTimeInstance(DateFormat::kLong, fLocale);
DateFormat *fullTimeTemplate = DateFormat::createTimeInstance(DateFormat::kFull, fLocale);
result += COMMA;
if (formatAlias == *defaultDateTemplate) {
result += g_umsg_date;
}
else if (formatAlias == *shortDateTemplate) {
result += g_umsg_date;
result += COMMA;
result += g_umsg_short;
}
else if (formatAlias == *defaultDateTemplate) {
result += g_umsg_date;
result += COMMA;
result += g_umsg_medium;
}
else if (formatAlias == *longDateTemplate) {
result += g_umsg_date;
result += COMMA;
result += g_umsg_long;
}
else if (formatAlias == *fullDateTemplate) {
result += g_umsg_date;
result += COMMA;
result += g_umsg_full;
}
else if (formatAlias == *defaultTimeTemplate) {
result += g_umsg_time;
}
else if (formatAlias == *shortTimeTemplate) {
result += g_umsg_time;
result += COMMA;
result += g_umsg_short;
}
else if (formatAlias == *defaultTimeTemplate) {
result += g_umsg_time;
result += COMMA;
result += g_umsg_medium;
}
else if (formatAlias == *longTimeTemplate) {
result += g_umsg_time;
result += COMMA;
result += g_umsg_long;
}
else if (formatAlias == *fullTimeTemplate) {
result += g_umsg_time;
result += COMMA;
result += g_umsg_full;
}
else {
UnicodeString buffer;
result += g_umsg_date;
result += COMMA;
result += ((SimpleDateFormat*)fFormats[i])->toPattern(buffer);
}
delete defaultDateTemplate;
delete shortDateTemplate;
delete longDateTemplate;
delete fullDateTemplate;
delete defaultTimeTemplate;
delete shortTimeTemplate;
delete longTimeTemplate;
delete fullTimeTemplate;
// {sfb} there should be a more efficient way to do this!
}
else if (fFormats[i]->getDynamicClassID() == ChoiceFormat::getStaticClassID()) {
UnicodeString buffer;
result += COMMA;
result += g_umsg_choice;
result += COMMA;
result += ((ChoiceFormat*)fFormats[i])->toPattern(buffer);
}
else {
//result += ", unknown";
}
result += RIGHT_CURLY_BRACE;
}
copyAndFixQuotes(fPattern, lastOffset, fPattern.length(), result);
return result;
}
// -------------------------------------
// Adopts the new formats array and updates the array count.
// This MessageFormat instance owns the new formats.
void
MessageFormat::adoptFormats(Format** newFormats,
int32_t cnt)
{
if(newFormats == NULL || cnt < 0)
return;
int32_t i;
// Cleans up first.
for (i = 0; i < fCount; i++)
delete fFormats[i];
fCount = (cnt > kMaxFormat) ? kMaxFormat : cnt;
for (i = 0; i < fCount; i++)
fFormats[i] = newFormats[i];
for (i = kMaxFormat; i < cnt; i++)
delete newFormats[i];
}
// -------------------------------------
// Sets the new formats array and updates the array count.
// This MessageFormat instance maks a copy of the new formats.
void
MessageFormat::setFormats(const Format** newFormats,
int32_t cnt)
{
if(newFormats == NULL || cnt < 0)
return;
int32_t i;
// Cleans up first.
for (i = 0; i < fCount; i++) {
delete fFormats[i];
}
fCount = (cnt > kMaxFormat) ? kMaxFormat : cnt;
for (i = 0; i < fCount; i++) {
if (newFormats[i] == NULL) {
fFormats[i] = NULL;
}
else{
fFormats[i] = newFormats[i]->clone();
}
}
}
// -------------------------------------
// Adopts the first *variable* formats in the format array.
// This MessageFormat instance owns the new formats.
// Do nothing is the variable is not less than the array count.
void
MessageFormat::adoptFormat(int32_t variable, Format *newFormat)
{
if(variable < 0)
return;
if (variable < fCount) {
// Deletes the old formats.
delete fFormats[variable];
fFormats[variable] = newFormat;
}
}
// -------------------------------------
// Sets the first *variable* formats in the format array, this
// MessageFormat instance makes copies of the new formats.
// Do nothing is the variable is not less than the array count.
void
MessageFormat::setFormat(int32_t variable, const Format& newFormat)
{
if (variable < fCount) {
delete fFormats[variable];
if (&(newFormat) == NULL) {
fFormats[variable] = NULL;
}
else{
fFormats[variable] = newFormat.clone();
}
}
}
// -------------------------------------
// Gets the format array.
const Format**
MessageFormat::getFormats(int32_t& cnt) const
{
cnt = fCount;
return (const Format**)fFormats;
}
// -------------------------------------
// Formats the source Formattable array and copy into the result buffer.
// Ignore the FieldPosition result for error checking.
UnicodeString&
MessageFormat::format(const Formattable* source,
int32_t cnt,
UnicodeString& result,
FieldPosition& ignore,
UErrorCode& success) const
{
if (U_FAILURE(success))
return result;
return format(source, cnt, result, ignore, 0, success);
}
// -------------------------------------
// Internally creates a MessageFormat instance based on the
// pattern and formats the arguments Formattable array and
// copy into the result buffer.
UnicodeString&
MessageFormat::format( const UnicodeString& pattern,
const Formattable* arguments,
int32_t cnt,
UnicodeString& result,
UErrorCode& success)
{
// {sfb} why does this use a local when so many other places use a static?
MessageFormat *temp = new MessageFormat(pattern, success);
/* test for NULL */
if (temp == 0) {
success = U_MEMORY_ALLOCATION_ERROR;
return result;
}
if (U_FAILURE(success))
return result;
FieldPosition ignore(0);
temp->format(arguments, cnt, result, ignore, success);
delete temp;
return result;
}
// -------------------------------------
// Formats the source Formattable object and copy into the
// result buffer. The Formattable object must be an array
// of Formattable instances, returns error otherwise.
UnicodeString&
MessageFormat::format(const Formattable& source,
UnicodeString& result,
FieldPosition& ignore,
UErrorCode& success) const
{
int32_t cnt;
if (U_FAILURE(success))
return result;
if (source.getType() != Formattable::kArray) {
success = U_ILLEGAL_ARGUMENT_ERROR;
return result;
}
const Formattable* tmpPtr = source.getArray(cnt);
return format(tmpPtr, cnt, result, ignore, 0, success);
}
// -------------------------------------
// Formats the arguments Formattable array and copy into the result buffer.
// Ignore the FieldPosition result for error checking.
UnicodeString&
MessageFormat::format(const Formattable* arguments,
int32_t cnt,
UnicodeString& result,
FieldPosition& status,
int32_t recursionProtection,
UErrorCode& success) const
{
if(/*arguments == NULL ||*/ cnt < 0) {
success = U_ILLEGAL_ARGUMENT_ERROR;
return result;
}
UnicodeString buffer;
int32_t lastOffset = 0;
for (int32_t i = 0; i <= fMaxOffset;++i) {
// Cleans up the temp buffer for each formattable arguments.
buffer.remove();
// Append the prefix of current format element.
fPattern.extract(lastOffset, fOffsets[i] - lastOffset, buffer);
result += buffer;
lastOffset = fOffsets[i];
int32_t argumentNumber = fArgumentNumbers[i];
// Checks the scope of the argument number.
if (argumentNumber >= cnt) {
/*success = U_ILLEGAL_ARGUMENT_ERROR;
return result;*/
result += LEFT_CURLY_BRACE;
UnicodeString temp;
result += itos(argumentNumber, temp);
result += RIGHT_CURLY_BRACE;
continue;
}
Formattable obj = arguments[argumentNumber];
UnicodeString arg;
UBool tryRecursion = FALSE;
// Recursively calling the format process only if the current format argument
// refers to a ChoiceFormat object.
if (fFormats[i] != NULL) {
fFormats[i]->format(obj, arg, success);
tryRecursion = (fFormats[i]->getDynamicClassID() == ChoiceFormat::getStaticClassID());
}
// If the obj data type if a number, use a NumberFormat instance.
else if ((obj.getType() == Formattable::kDouble) ||
(obj.getType() == Formattable::kLong)) {
NumberFormat *numTemplate = NULL;
numTemplate = NumberFormat::createInstance(fLocale, success);
if (U_FAILURE(success)) {
delete numTemplate;
return result;
}
numTemplate->format((obj.getType() == Formattable::kDouble) ? obj.getDouble() : obj.getLong(), arg);
delete numTemplate;
if (U_FAILURE(success))
return result;
}
// If the obj data type is a Date instance, use a DateFormat instance.
else if (obj.getType() == Formattable::kDate) {
DateFormat *dateTemplate = NULL;
dateTemplate = DateFormat::createDateTimeInstance(DateFormat::kShort, DateFormat::kShort, fLocale);
dateTemplate->format(obj.getDate(), arg);
delete dateTemplate;
}
else if (obj.getType() == Formattable::kString) {
obj.getString(arg);
}
else {
#ifdef LIUDEBUG
cerr << "Unknown object of type:" << obj.getType() << endl;
#endif
success = U_ILLEGAL_ARGUMENT_ERROR;
return result;
}
// Needs to reprocess the ChoiceFormat option by using the MessageFormat
// pattern application.
if (tryRecursion && arg.indexOf(LEFT_CURLY_BRACE) >= 0) {
MessageFormat *temp = NULL;
temp = new MessageFormat(arg, fLocale, success);
/* test for NULL */
if (temp == 0) {
status = U_MEMORY_ALLOCATION_ERROR;
return result;
}
if (U_FAILURE(success))
return result;
temp->format(arguments, cnt, result, status, recursionProtection, success);
if (U_FAILURE(success)) {
delete temp;
return result;
}
delete temp;
}
else {
result += arg;
}
}
buffer.remove();
// Appends the rest of the pattern characters after the real last offset.
fPattern.extract(lastOffset, fPattern.length(), buffer);
result += buffer;
return result;
}
// -------------------------------------
// Parses the source pattern and returns the Formattable objects array,
// the array count and the ending parse position. The caller of this method
// owns the array.
Formattable*
MessageFormat::parse(const UnicodeString& source,
ParsePosition& status,
int32_t& count) const
{
Formattable *resultArray = new Formattable[(size_t)kMaxFormat];
int32_t patternOffset = 0;
int32_t sourceOffset = status.getIndex();
ParsePosition tempStatus(0);
count = 0; // {sfb} reset to zero
for (int32_t i = 0; i <= fMaxOffset; ++i) {
// match up to format
int32_t len = fOffsets[i] - patternOffset;
if (len == 0 ||
fPattern.compare(patternOffset, len, source, sourceOffset, len) == 0) {
sourceOffset += len;
patternOffset += len;
}
else {
status.setErrorIndex(sourceOffset);
delete [] resultArray;
count = 0;
return NULL; // leave index as is to signal error
}
// now use format
if (fFormats[i] == NULL) { // string format
// if at end, use longest possible match
// otherwise uses first match to intervening string
// does NOT recursively try all possibilities
int32_t tempLength = (i != fMaxOffset) ? fOffsets[i+1] : fPattern.length();
int32_t next;
if (patternOffset >= tempLength) {
next = source.length();
}
else {
UnicodeString buffer;
fPattern.extract(patternOffset,tempLength - patternOffset, buffer);
next = source.indexOf(buffer, sourceOffset);
}
if (next < 0) {
status.setErrorIndex(sourceOffset);
delete [] resultArray;
count = 0;
return NULL; // leave index as is to signal error
}
else {
UnicodeString buffer;
source.extract(sourceOffset,next - sourceOffset, buffer);
UnicodeString strValue = buffer;
UnicodeString temp(LEFT_CURLY_BRACE);
// {sfb} check this later
UnicodeString temp1;
temp += itos(fArgumentNumbers[i], temp1);
temp += RIGHT_CURLY_BRACE;
if (strValue != temp) {
source.extract(sourceOffset,next - sourceOffset, buffer);
resultArray[fArgumentNumbers[i]].setString(buffer);
// {sfb} not sure about this
if ((fArgumentNumbers[i] + 1) > count) {
count = (fArgumentNumbers[i] + 1);
}
}
sourceOffset = next;
}
}
else {
tempStatus.setIndex(sourceOffset);
fFormats[i]->parseObject(source, resultArray[fArgumentNumbers[i]], tempStatus);
if (tempStatus.getIndex() == sourceOffset) {
status.setErrorIndex(sourceOffset);
delete [] resultArray;
count = 0;
return NULL; // leave index as is to signal error
}
if ((fArgumentNumbers[i] + 1) > count)
count = (fArgumentNumbers[i] + 1);
sourceOffset = tempStatus.getIndex(); // update
}
}
int32_t len = fPattern.length() - patternOffset;
if (len == 0 ||
fPattern.compare(patternOffset, len, source, sourceOffset, len) == 0) {
status.setIndex(sourceOffset + len);
}
else {
status.setErrorIndex(sourceOffset);
delete [] resultArray;
count = 0;
return NULL; // leave index as is to signal error
}
return resultArray;
}
// -------------------------------------
// Parses the source string and returns the array of
// Formattable objects and the array count. The caller
// owns the returned array.
Formattable*
MessageFormat::parse(const UnicodeString& source,
int32_t& cnt,
UErrorCode& success) const
{
ParsePosition status(0);
// Calls the actual implementation method and starts
// from zero offset of the source text.
Formattable* result = parse(source, status, cnt);
if (status.getIndex() == 0) {
success = U_MESSAGE_PARSE_ERROR;
return NULL;
}
return result;
}
// -------------------------------------
// Parses the source text and copy into the result buffer.
void
MessageFormat::parseObject( const UnicodeString& source,
Formattable& result,
ParsePosition& status) const
{
int32_t cnt = 0;
Formattable* tmpResult = parse(source, status, cnt);
if (tmpResult != NULL)
result.adoptArray(tmpResult, cnt);
}
// -------------------------------------
// NumberFormat cache management
/*
NumberFormat*
MessageFormat::getNumberFormat(UErrorCode &status)
{
NumberFormat *theFormat = 0;
if (fgNumberFormat != 0) // if there's something in the cache
{
Mutex lock;
if (fgNumberFormat != 0) // Someone might have grabbed it.
{
theFormat = fgNumberFormat;
fgNumberFormat = 0; // We have exclusive right to this formatter.
}
}
if(theFormat == 0) // If we weren't able to pull it out of the cache, then we have to create it.
{
theFormat = NumberFormat::createInstance(Locale::US, status);
if(U_FAILURE(status))
return 0;
theFormat->setParseIntegerOnly(TRUE);
}
return theFormat;
}
void
MessageFormat::releaseNumberFormat(NumberFormat *adopt)
{
if(fgNumberFormat == 0) // If the cache is empty we must add it back.
{
Mutex lock;
if(fgNumberFormat == 0)
{
fgNumberFormat = adopt;
adopt = 0;
}
}
delete adopt;
}
*/
/**
* Converts a string to an integer value using a default NumberFormat object
* which is static (shared by all MessageFormat instances). This replaces
* a call to wtoi().
*/
int32_t
MessageFormat::stoi(const UnicodeString& string)
{
/*
NumberFormat *myFormat = getNumberFormat(status);
if(U_FAILURE(status))
return -1; // OK?
Formattable result;
// Uses the global number formatter to parse the string.
// Note: We assume here that parse() is thread-safe.
myFormat->parse(string, result, status);
releaseNumberFormat(myFormat);
int32_t value = 0;
if (U_SUCCESS(status) && result.getType() == Formattable::kLong)
value = result.getLong();
return value;
*/
/* this ignores any white spaces between '{' and digit char
* so now we can have { 0, date} {0 , date }
*/
for(int i=0;i<string.length();i++){
UChar32 ch = string.char32At(i);
if(u_isdigit(ch)){
return u_charDigitValue(ch);
}else if(!u_isspace(ch)){
break;
}
}
return -1;
}
// -------------------------------------
/**
* Converts an integer value to a string using a default NumberFormat object
* which is static (shared by all MessageFormat instances). This replaces
* a call to wtoi().
*/
UnicodeString&
MessageFormat::itos(int32_t i,
UnicodeString& string)
{
/*
UErrorCode status = U_ZERO_ERROR;
NumberFormat *myFormat = getNumberFormat(status);
if(U_FAILURE(status)) {
// "<ERROR>"
static const UChar ERROR[] = {0x3C, 0x45, 0x52, 0x52, 0x4F, 0x52, 0x3E, 0};
return string = ERROR; // TODO: maybe toPattern should take an errorcode.
}
UnicodeString &retval = myFormat->format(i, string);
releaseNumberFormat(myFormat);
return retval;
*/
UChar temp[10] = { '\0' };
uprv_itou(temp,i,16,0);
string.append(temp);
return string;
}
// -------------------------------------
// Checks which format instance we are really using based on the segments.
int32_t
MessageFormat::makeFormat(/*int32_t position, */
int32_t offsetNumber,
UnicodeString* segments,
UParseError& parseError,
UErrorCode& success)
{
if(U_FAILURE(success))
return -1;
// get the number
int32_t argumentNumber = stoi(segments[1]); // always unlocalized!
int32_t oldMaxOffset = fMaxOffset;
if (argumentNumber < 0 || argumentNumber > 9) {
success = U_INVALID_FORMAT_ERROR;
return argumentNumber;
}
fMaxOffset = offsetNumber;
fOffsets[offsetNumber] = segments[0].length();
fArgumentNumbers[offsetNumber] = argumentNumber;
int test = 0;
// now get the format
Format *newFormat = NULL;
switch (findKeyword(segments[2], g_umsgTypeList)) {
case 0:
fFormatTypeList[argumentNumber] = Formattable::kString;
break;
case 1: case 2:// number
test=findKeyword(segments[3], g_umsgModifierList);
fFormatTypeList[argumentNumber] = Formattable::kDouble;
switch (test) {
case 0: // default;
newFormat = NumberFormat::createInstance(fLocale, success);
break;
case 1: case 2:// currency
newFormat = NumberFormat::createCurrencyInstance(fLocale, success);
break;
case 3: case 4:// percent
newFormat = NumberFormat::createPercentInstance(fLocale, success);
break;
case 5: case 6:// integer
fFormatTypeList[argumentNumber] = Formattable::kLong;
newFormat = createIntegerFormat(fLocale, success);
break;
default: // pattern
newFormat = NumberFormat::createInstance(fLocale, success);
if(U_FAILURE(success)) {
newFormat = NULL;
return argumentNumber;
}
if(newFormat->getDynamicClassID() == DecimalFormat::getStaticClassID()){
((DecimalFormat*)newFormat)->applyPattern(segments[3],parseError,success);
}
if(U_FAILURE(success)) {
fMaxOffset = oldMaxOffset;
return argumentNumber;
}
break;
}
break;
case 3: case 4: // date
fFormatTypeList[argumentNumber] = Formattable::kDate;
switch (findKeyword(segments[3], g_umsgDateModifierList)) {
case 0: // default
newFormat = DateFormat::createDateInstance(DateFormat::kDefault, fLocale);
break;
case 1: case 2: // short
newFormat = DateFormat::createDateInstance(DateFormat::kShort, fLocale);
break;
case 3: case 4: // medium
newFormat = DateFormat::createDateInstance(DateFormat::kDefault, fLocale);
break;
case 5: case 6: // long
newFormat = DateFormat::createDateInstance(DateFormat::kLong, fLocale);
break;
case 7: case 8: // full
newFormat = DateFormat::createDateInstance(DateFormat::kFull, fLocale);
break;
default:
newFormat = DateFormat::createDateInstance(DateFormat::kDefault, fLocale);
if(newFormat && newFormat->getDynamicClassID() == SimpleDateFormat::getStaticClassID()){
((SimpleDateFormat*)newFormat)->applyPattern(segments[3]);
}
break;
}
if (!newFormat) {
/* TODO: get the real error from createDateInstance */
success = U_MEMORY_ALLOCATION_ERROR;
}
break;
case 5: case 6:// time
fFormatTypeList[argumentNumber]= Formattable::kDate;
switch (findKeyword(segments[3], g_umsgDateModifierList)) {
case 0: // default
newFormat = DateFormat::createTimeInstance(DateFormat::kDefault, fLocale);
break;
case 1: case 2: // short
newFormat = DateFormat::createTimeInstance(DateFormat::kShort, fLocale);
break;
case 3: case 4: // medium
newFormat = DateFormat::createTimeInstance(DateFormat::kDefault, fLocale);
break;
case 5: case 6: // long
newFormat = DateFormat::createTimeInstance(DateFormat::kLong, fLocale);
break;
case 7: case 8: // full
newFormat = DateFormat::createTimeInstance(DateFormat::kFull, fLocale);
break;
default:
newFormat = DateFormat::createTimeInstance(DateFormat::kDefault, fLocale);
if(newFormat && newFormat->getDynamicClassID() == SimpleDateFormat::getStaticClassID()){
((SimpleDateFormat*)newFormat)->applyPattern(segments[3]);
}
break;
}
if (!newFormat) {
/* TODO: get the real error from createTimeInstance */
success = U_MEMORY_ALLOCATION_ERROR;
}
break;
case 7: case 8:// choice
fFormatTypeList[argumentNumber] = Formattable::kDouble;
newFormat = new ChoiceFormat(segments[3], parseError, success);
/* test for NULL */
if (newFormat == 0) {
success = U_MEMORY_ALLOCATION_ERROR;
fMaxOffset = oldMaxOffset;
return argumentNumber;
}
if(U_FAILURE(success)) {
fMaxOffset = oldMaxOffset;
return argumentNumber;
}
break;
default:
fMaxOffset = oldMaxOffset;
success = U_ILLEGAL_ARGUMENT_ERROR;
return argumentNumber;
}
if(newFormat != NULL) {
delete fFormats[offsetNumber];
fFormats[offsetNumber] = newFormat;
}
segments[1].remove(); // throw away other segments
segments[2].remove();
segments[3].remove();
return argumentNumber;
}
// -------------------------------------
// Finds the string, s, in the string array, list.
int32_t MessageFormat::findKeyword(const UnicodeString& s,
const UChar * const *list)
{
if (s.length() == 0)
return 0;
UnicodeString buffer = s;
// Trims the space characters and turns all characters
// in s to lower case.
buffer.trim().toLower();
for (int32_t i = 0; i < g_umsgListLength; ++i) {
if (list[i] && !buffer.compare(list[i], u_strlen(list[i])))
return i;
}
return -1;
}
// -------------------------------------
// Checks the range of the source text to quote the special
// characters, { and ' and copy to target buffer.
void
MessageFormat::copyAndFixQuotes(const UnicodeString& source,
int32_t start,
int32_t end,
UnicodeString& target)
{
UBool gotLB = FALSE;
for (int32_t i = start; i < end; ++i) {
UChar ch = source[i];
if (ch == LEFT_CURLY_BRACE) {
target += SINGLE_QUOTE;
target += LEFT_CURLY_BRACE;
target += SINGLE_QUOTE;
gotLB = TRUE;
}
else if (ch == RIGHT_CURLY_BRACE) {
if(gotLB) {
target += RIGHT_CURLY_BRACE;
gotLB = FALSE;
}
else {
// orig code.
target += SINGLE_QUOTE;
target += RIGHT_CURLY_BRACE;
target += SINGLE_QUOTE;
}
}
else if (ch == SINGLE_QUOTE) {
target += SINGLE_QUOTE;
target += SINGLE_QUOTE;
}
else {
target += ch;
}
}
}
/**
* Convenience method that ought to be in NumberFormat
*/
NumberFormat*
MessageFormat::createIntegerFormat(const Locale& locale, UErrorCode& status) const {
NumberFormat *temp = NumberFormat::createInstance(locale, status);
if (temp->getDynamicClassID() == DecimalFormat::getStaticClassID()) {
DecimalFormat *temp2 = (DecimalFormat*) temp;
temp2->setMaximumFractionDigits(0);
temp2->setDecimalSeparatorAlwaysShown(FALSE);
temp2->setParseIntegerOnly(TRUE);
}
return temp;
}
U_NAMESPACE_END
//eof