511 lines
13 KiB
C++
511 lines
13 KiB
C++
/*
|
|
*******************************************************************************
|
|
* Copyright (C) 1996-1999, International Business Machines
|
|
* Corporation and others. All Rights Reserved.
|
|
*******************************************************************************
|
|
*/
|
|
|
|
#include "unicode/umsg.h"
|
|
#include "mutex.h"
|
|
#include "unicode/uloc.h"
|
|
#include "unicode/ustring.h"
|
|
#include "unicode/fmtable.h"
|
|
#include "cpputils.h"
|
|
#include "unicode/msgfmt.h"
|
|
#include "unicode/unistr.h"
|
|
#include "unicode/numfmt.h"
|
|
|
|
|
|
// MessageFormat Type List Number, Date, Time or Choice
|
|
const UnicodeString fgTypeList[] = {
|
|
UnicodeString(), UnicodeString(), UNICODE_STRING("number", 6), UnicodeString(), UNICODE_STRING("date", 4), UnicodeString(), UNICODE_STRING("time", 4), UnicodeString(), UNICODE_STRING("choice", 6)
|
|
};
|
|
|
|
// NumberFormat modifier list, default, currency, percent or integer
|
|
const UnicodeString fgModifierList[] = {
|
|
UnicodeString(), UnicodeString(), UNICODE_STRING("currency", 8), UnicodeString(), UNICODE_STRING("percent", 7), UnicodeString(), UNICODE_STRING("integer", 7), UnicodeString(), UnicodeString()
|
|
};
|
|
|
|
// DateFormat modifier list, default, short, medium, long or full
|
|
const UnicodeString fgDateModifierList[] = {
|
|
UnicodeString(), UnicodeString(), UNICODE_STRING("short", 5), UnicodeString(), UNICODE_STRING("medium", 6), UnicodeString(), UNICODE_STRING("long", 4), UnicodeString(), UNICODE_STRING("full", 4)
|
|
};
|
|
|
|
// Number of items in the lists
|
|
const int32_t fgListLength = 9;
|
|
|
|
// Determine if a keyword belongs to a list of keywords
|
|
int32_t
|
|
findKeyword(const UnicodeString& s,
|
|
const UnicodeString *list,
|
|
int32_t& kwLen)
|
|
{
|
|
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 < fgListLength; ++i) {
|
|
|
|
// Determine if there is a ','
|
|
// If so, the string contains a modifier, and we only want to
|
|
// parse the type
|
|
int32_t commaPos = buffer.indexOf((UChar)0x002C);
|
|
commaPos = (commaPos == -1 ? buffer.length() : commaPos);
|
|
buffer.truncate(commaPos);
|
|
if(buffer == list[i]) {
|
|
kwLen = list[i].length();
|
|
return i;
|
|
}
|
|
}
|
|
|
|
kwLen = 0;
|
|
return - 1;
|
|
}
|
|
|
|
// Match the type of argument in a message format pattern
|
|
// The type consists of a type indicator and an optional modifier
|
|
// Possible types : number, date, time, choice
|
|
// Possible modifiers : currency, percent, integer, full, long, short
|
|
// We only worry about parsing the types and the "integer" modifier
|
|
Formattable::Type
|
|
matchType(const UChar *pat,
|
|
int32_t openBrace,
|
|
int32_t closeBrace)
|
|
{
|
|
int32_t len = (closeBrace - openBrace) - 1;
|
|
Formattable::Type result = Formattable::kString;
|
|
|
|
// Strings like "{0}" are strings
|
|
if(len == 1) {
|
|
result = Formattable::kString;
|
|
return result;
|
|
}
|
|
// Assume the input is well-formed
|
|
else {
|
|
UnicodeString type((UChar*)pat + openBrace + 1 + 2, len - 2, len - 2);
|
|
int32_t matchLen, kw;
|
|
|
|
kw = findKeyword(type, fgTypeList, matchLen);
|
|
|
|
// there is a modifier if type contains a ','
|
|
UBool hasModifier = (type.indexOf((UChar)0x002C) != -1);
|
|
|
|
switch(kw) {
|
|
|
|
// number
|
|
case 1: case 2:
|
|
|
|
if(hasModifier) {
|
|
UnicodeString modifier((UChar*)pat + openBrace + 1 + 1 + 2 + matchLen,
|
|
len - 2 - matchLen - 1,
|
|
len - 2 - matchLen - 1);
|
|
|
|
switch(findKeyword(modifier, fgModifierList, matchLen)) {
|
|
|
|
// default
|
|
case 0:
|
|
// currency
|
|
case 1: case 2:
|
|
// percent
|
|
case 3: case 4:
|
|
result = Formattable::kDouble;
|
|
break;
|
|
|
|
// integer
|
|
case 5: case 6:
|
|
result = Formattable::kLong;
|
|
break;
|
|
}
|
|
}
|
|
else {
|
|
result = Formattable::kDouble;
|
|
}
|
|
break;
|
|
|
|
// date
|
|
case 3: case 4:
|
|
// time
|
|
case 5: case 6:
|
|
result = Formattable::kDate;
|
|
break;
|
|
|
|
// choice
|
|
case 7: case 8:
|
|
result = Formattable::kDouble;
|
|
break;
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
// ==========
|
|
// This code section is entirely bogus. I just need an eeasy way to
|
|
// convert from string to an int, and I can't use the standard library
|
|
|
|
static NumberFormat *fgNumberFormat = 0;
|
|
|
|
NumberFormat*
|
|
umsg_getNumberFormat(UErrorCode& status)
|
|
{
|
|
NumberFormat *theFormat = 0;
|
|
|
|
if(fgNumberFormat != 0) {
|
|
Mutex lock;
|
|
|
|
if(fgNumberFormat != 0) {
|
|
theFormat = fgNumberFormat;
|
|
fgNumberFormat = 0; // We have exclusive right to this formatter.
|
|
}
|
|
}
|
|
|
|
if(theFormat == 0) {
|
|
theFormat = NumberFormat::createInstance(Locale::US, status);
|
|
if(U_FAILURE(status))
|
|
return 0;
|
|
theFormat->setParseIntegerOnly(TRUE);
|
|
}
|
|
|
|
return theFormat;
|
|
}
|
|
|
|
void
|
|
umsg_releaseNumberFormat(NumberFormat *adopt)
|
|
{
|
|
if(fgNumberFormat == 0) {
|
|
Mutex lock;
|
|
|
|
if(fgNumberFormat == 0) {
|
|
fgNumberFormat = adopt;
|
|
adopt = 0;
|
|
}
|
|
}
|
|
|
|
delete adopt;
|
|
}
|
|
|
|
int32_t
|
|
umsg_stoi(const UnicodeString& string,
|
|
UErrorCode& status)
|
|
{
|
|
NumberFormat *myFormat = umsg_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);
|
|
umsg_releaseNumberFormat(myFormat);
|
|
|
|
int32_t value = 0;
|
|
if(U_SUCCESS(status) && result.getType() == Formattable::kLong)
|
|
value = result.getLong();
|
|
|
|
return value;
|
|
}
|
|
|
|
UnicodeString&
|
|
umsg_itos(int32_t i,
|
|
UnicodeString& string)
|
|
{
|
|
UErrorCode status = U_ZERO_ERROR;
|
|
NumberFormat *myFormat = umsg_getNumberFormat(status);
|
|
|
|
if(U_FAILURE(status))
|
|
return (string = "<ERROR>");
|
|
|
|
myFormat->format(i, string);
|
|
umsg_releaseNumberFormat(myFormat);
|
|
|
|
return string;
|
|
}
|
|
|
|
// ==========
|
|
|
|
#define MAX_ARGS 10
|
|
|
|
// Eventually, message format should be rewritten natively in C.
|
|
// For now, this is a hack that should work:
|
|
// 1. Parse the pattern, determining the argument types
|
|
// 2. Create a Formattable array with the varargs
|
|
// 3. Call through to the existing C++ code
|
|
//
|
|
// Right now this imposes the same limit as MessageFormat in C++
|
|
// Namely, only MAX_ARGS arguments are supported
|
|
U_CAPI int32_t
|
|
u_formatMessage( const char *locale,
|
|
const UChar *pattern,
|
|
int32_t patternLength,
|
|
UChar *result,
|
|
int32_t resultLength,
|
|
UErrorCode *status,
|
|
...)
|
|
{
|
|
va_list ap;
|
|
int32_t actLen;
|
|
if(U_FAILURE(*status)) return -1;
|
|
|
|
// start vararg processing
|
|
va_start(ap, status);
|
|
|
|
actLen = u_vformatMessage(locale,pattern,patternLength,result,resultLength,ap,status);
|
|
|
|
// end vararg processing
|
|
va_end(ap);
|
|
|
|
return actLen;
|
|
}
|
|
|
|
U_CAPI int32_t
|
|
u_vformatMessage( const char *locale,
|
|
const UChar *pattern,
|
|
int32_t patternLength,
|
|
UChar *result,
|
|
int32_t resultLength,
|
|
va_list ap,
|
|
UErrorCode *status)
|
|
|
|
{
|
|
if(U_FAILURE(*status)) return -1;
|
|
|
|
int32_t patLen = (patternLength == -1 ? u_strlen(pattern) : patternLength);
|
|
int32_t actLen;
|
|
|
|
// ========================================
|
|
// Begin pseudo-parser
|
|
|
|
// This is a simplified version of the C++ pattern parser
|
|
// All it does is look for an unquoted '{' and read the type
|
|
|
|
int32_t part = 0;
|
|
UBool inQuote = FALSE;
|
|
int32_t braceStack = 0;
|
|
const UChar *pat = pattern;
|
|
const UChar *patLimit = pattern + patLen;
|
|
int32_t bracePos = 0;
|
|
int32_t count = 0;
|
|
Formattable args [ MAX_ARGS ];
|
|
Formattable::Type argTypes [ MAX_ARGS ];
|
|
|
|
|
|
// set the types to a bogus value initially (no such type as kArray from C)
|
|
for(int32_t j = 0; j < MAX_ARGS; ++j)
|
|
argTypes[j] = Formattable::kArray;
|
|
|
|
// pseudo-parse the pattern
|
|
while(pat < patLimit) {
|
|
if(part == 0) {
|
|
if(*pat == 0x0027 /*'\''*/) {
|
|
// handle double quotes
|
|
if( (pat + 1) < patLimit && *(pat + 1) == 0x0027 /*'\''*/)
|
|
pat++;
|
|
else
|
|
inQuote = ! inQuote;
|
|
}
|
|
else if(*pat == 0x007B /*'{'*/ && ! inQuote) {
|
|
part = 1;
|
|
bracePos = (pat - pattern);
|
|
}
|
|
}
|
|
else if(inQuote) { // just copy quotes in parts
|
|
if(*pat == 0x0027 /*'\''*/)
|
|
inQuote = FALSE;
|
|
}
|
|
else {
|
|
switch (*pat) {
|
|
|
|
case 0x002C /*','*/:
|
|
if(part < 3)
|
|
part += 1;
|
|
break;
|
|
|
|
case 0x007B /*'{'*/:
|
|
++braceStack;
|
|
break;
|
|
|
|
case 0x007D /*'}'*/:
|
|
if(braceStack == 0) {
|
|
part = 0;
|
|
// found a close brace, determine the argument type enclosed
|
|
// and the numeric ID of the argument
|
|
Formattable::Type type =
|
|
matchType(pattern, bracePos, (pat - pattern));
|
|
|
|
// the numeric ID is important, because if the pattern has a
|
|
// section like "{0} {0} {0}" we only want to get one argument
|
|
// from the variable argument list, despite the fact that
|
|
// it is in the pattern three times
|
|
int32_t argNum = umsg_stoi(pattern + bracePos + 1, *status);
|
|
|
|
if(argNum >= MAX_ARGS) {
|
|
*status = U_INTERNAL_PROGRAM_ERROR;
|
|
return -1;
|
|
}
|
|
|
|
// register the type of this argument in our list
|
|
argTypes[argNum] = type;
|
|
|
|
// adjust argument count
|
|
count = ( (argNum + 1) > count ? (argNum + 1) : count);
|
|
}
|
|
else
|
|
--braceStack;
|
|
break;
|
|
|
|
case 0x0027 /*'\''*/:
|
|
inQuote = TRUE;
|
|
break;
|
|
}
|
|
}
|
|
|
|
// increment position in pattern
|
|
pat++;
|
|
}
|
|
|
|
// detect any unmatched braces in the pattern
|
|
if(braceStack == 0 && part != 0) {
|
|
*status = U_INVALID_FORMAT_ERROR;
|
|
return -1;
|
|
}
|
|
|
|
// iterate through the vararg list, and get the arguments out
|
|
for(int32_t i = 0; i < count; ++i) {
|
|
|
|
UChar *stringVal;
|
|
|
|
switch(argTypes[i]) {
|
|
case Formattable::kDate:
|
|
args[i].setDate(va_arg(ap, UDate));
|
|
break;
|
|
|
|
case Formattable::kDouble:
|
|
args[i].setDouble(va_arg(ap, double));
|
|
break;
|
|
|
|
case Formattable::kLong:
|
|
args[i].setLong(va_arg(ap, int32_t));
|
|
break;
|
|
|
|
case Formattable::kString:
|
|
// For some reason, a temporary is needed
|
|
stringVal = va_arg(ap, UChar*);
|
|
args[i].setString(stringVal);
|
|
break;
|
|
|
|
case Formattable::kArray:
|
|
// throw away this argument
|
|
// this is highly platform-dependent, and probably won't work
|
|
// so, if you try to skip arguments in the list (and not use them)
|
|
// you'll probably crash
|
|
va_arg(ap, int);
|
|
break;
|
|
}
|
|
}
|
|
|
|
// End pseudo-parser
|
|
// ========================================
|
|
|
|
// just call through to the C++ implementation
|
|
UnicodeString patString((UChar*)pattern, patLen, patLen);
|
|
MessageFormat fmt(patString, Locale(locale), *status);
|
|
UnicodeString res(result, 0, resultLength);
|
|
FieldPosition fp;
|
|
fmt.format(args, count, res, fp, *status);
|
|
|
|
T_fillOutputParams(&res, result, resultLength, &actLen, status);
|
|
return actLen;
|
|
}
|
|
|
|
// For parse, do the reverse of format:
|
|
// 1. Call through to the C++ APIs
|
|
// 2. Just assume the user passed in enough arguments.
|
|
// 3. Iterate through each formattable returned, and assign to the arguments
|
|
U_CAPI void
|
|
u_parseMessage( const char *locale,
|
|
const UChar *pattern,
|
|
int32_t patternLength,
|
|
const UChar *source,
|
|
int32_t sourceLength,
|
|
UErrorCode *status,
|
|
...)
|
|
{
|
|
va_list ap;
|
|
|
|
if(U_FAILURE(*status)) return;
|
|
|
|
// start vararg processing
|
|
va_start(ap, status);
|
|
|
|
u_vparseMessage(locale,pattern,patternLength,source,sourceLength,ap,status);
|
|
|
|
// end vararg processing
|
|
va_end(ap);
|
|
|
|
}
|
|
|
|
U_CAPI void
|
|
u_vparseMessage( const char *locale,
|
|
const UChar *pattern,
|
|
int32_t patternLength,
|
|
const UChar *source,
|
|
int32_t sourceLength,
|
|
va_list ap,
|
|
UErrorCode *status)
|
|
{
|
|
if(U_FAILURE(*status)) return;
|
|
|
|
int32_t patLen = (patternLength == -1 ? u_strlen(pattern) : patternLength);
|
|
int32_t srcLen = (sourceLength == -1 ? u_strlen(source) : sourceLength);
|
|
|
|
UnicodeString patString((UChar*)pattern, patLen, patLen);
|
|
MessageFormat fmt(patString, Locale(locale), *status);
|
|
UnicodeString srcString((UChar*)source, srcLen, srcLen);
|
|
int32_t count = 0;
|
|
Formattable *args = fmt.parse(srcString, count, *status);
|
|
|
|
UDate *aDate;
|
|
double *aDouble;
|
|
UChar *aString;
|
|
UnicodeString temp;
|
|
|
|
// assign formattables to varargs
|
|
for(int32_t i = 0; i < count; i++) {
|
|
switch(args[i].getType()) {
|
|
|
|
case Formattable::kDate:
|
|
aDate = va_arg(ap, UDate*);
|
|
*aDate = args[i].getDate();
|
|
break;
|
|
|
|
case Formattable::kDouble:
|
|
aDouble = va_arg(ap, double*);
|
|
*aDouble = args[i].getDouble();
|
|
break;
|
|
|
|
case Formattable::kLong:
|
|
// always assume doubles for parsing
|
|
aDouble = va_arg(ap, double*);
|
|
*aDouble = (double) args[i].getLong();
|
|
break;
|
|
|
|
case Formattable::kString:
|
|
aString = va_arg(ap, UChar*);
|
|
args[i].getString(temp);
|
|
u_strcpy(aString, temp.getUChars());
|
|
break;
|
|
|
|
// better not happen!
|
|
case Formattable::kArray:
|
|
// DIE
|
|
break;
|
|
}
|
|
}
|
|
|
|
// clean up
|
|
delete [] args;
|
|
}
|