626 lines
24 KiB
C
626 lines
24 KiB
C
// Copyright (C) 2016 and later: Unicode, Inc. and others.
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// License & terms of use: http://www.unicode.org/copyright.html
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/********************************************************************
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* COPYRIGHT:
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* Copyright (c) 1997-2011, International Business Machines Corporation and
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* others. All Rights Reserved.
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* Copyright (C) 2010 , Yahoo! Inc.
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********************************************************************
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*
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* file name: umsg.h
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* encoding: US-ASCII
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* tab size: 8 (not used)
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* indentation:4
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*
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* Change history:
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*
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* 08/5/2001 Ram Added C wrappers for C++ API.
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********************************************************************/
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#ifndef UMSG_H
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#define UMSG_H
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#include "unicode/utypes.h"
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#if !UCONFIG_NO_FORMATTING
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#include "unicode/localpointer.h"
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#include "unicode/uloc.h"
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#include "unicode/parseerr.h"
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#include <stdarg.h>
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/**
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* \file
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* \brief C API: MessageFormat
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*
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* <h2>MessageFormat C API </h2>
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*
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* <p>MessageFormat prepares strings for display to users,
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* with optional arguments (variables/placeholders).
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* The arguments can occur in any order, which is necessary for translation
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* into languages with different grammars.
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*
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* <p>The opaque UMessageFormat type is a thin C wrapper around
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* a C++ MessageFormat. It is constructed from a <em>pattern</em> string
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* with arguments in {curly braces} which will be replaced by formatted values.
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*
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* <p>Currently, the C API supports only numbered arguments.
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*
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* <p>For details about the pattern syntax and behavior,
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* especially about the ASCII apostrophe vs. the
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* real apostrophe (single quote) character \htmlonly’\endhtmlonly (U+2019),
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* see the C++ MessageFormat class documentation.
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*
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* <p>Here are some examples of C API usage:
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* Example 1:
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* <pre>
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* \code
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* UChar *result, *tzID, *str;
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* UChar pattern[100];
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* int32_t resultLengthOut, resultlength;
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* UCalendar *cal;
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* UDate d1;
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* UDateFormat *def1;
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* UErrorCode status = U_ZERO_ERROR;
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*
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* str=(UChar*)malloc(sizeof(UChar) * (strlen("disturbance in force") +1));
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* u_uastrcpy(str, "disturbance in force");
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* tzID=(UChar*)malloc(sizeof(UChar) * 4);
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* u_uastrcpy(tzID, "PST");
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* cal=ucal_open(tzID, u_strlen(tzID), "en_US", UCAL_TRADITIONAL, &status);
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* ucal_setDateTime(cal, 1999, UCAL_MARCH, 18, 0, 0, 0, &status);
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* d1=ucal_getMillis(cal, &status);
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* u_uastrcpy(pattern, "On {0, date, long}, there was a {1} on planet {2,number,integer}");
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* resultlength=0;
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* resultLengthOut=u_formatMessage( "en_US", pattern, u_strlen(pattern), NULL, resultlength, &status, d1, str, 7);
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* if(status==U_BUFFER_OVERFLOW_ERROR){
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* status=U_ZERO_ERROR;
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* resultlength=resultLengthOut+1;
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* result=(UChar*)realloc(result, sizeof(UChar) * resultlength);
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* u_formatMessage( "en_US", pattern, u_strlen(pattern), result, resultlength, &status, d1, str, 7);
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* }
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* printf("%s\n", austrdup(result) );//austrdup( a function used to convert UChar* to char*)
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* //output>: "On March 18, 1999, there was a disturbance in force on planet 7
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* \endcode
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* </pre>
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* Typically, the message format will come from resources, and the
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* arguments will be dynamically set at runtime.
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* <P>
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* Example 2:
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* <pre>
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* \code
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* UChar* str;
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* UErrorCode status = U_ZERO_ERROR;
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* UChar *result;
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* UChar pattern[100];
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* int32_t resultlength, resultLengthOut, i;
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* double testArgs= { 100.0, 1.0, 0.0};
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*
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* str=(UChar*)malloc(sizeof(UChar) * 10);
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* u_uastrcpy(str, "MyDisk");
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* u_uastrcpy(pattern, "The disk {1} contains {0,choice,0#no files|1#one file|1<{0,number,integer} files}");
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* for(i=0; i<3; i++){
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* resultlength=0;
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* resultLengthOut=u_formatMessage( "en_US", pattern, u_strlen(pattern), NULL, resultlength, &status, testArgs[i], str);
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* if(status==U_BUFFER_OVERFLOW_ERROR){
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* status=U_ZERO_ERROR;
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* resultlength=resultLengthOut+1;
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* result=(UChar*)malloc(sizeof(UChar) * resultlength);
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* u_formatMessage( "en_US", pattern, u_strlen(pattern), result, resultlength, &status, testArgs[i], str);
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* }
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* printf("%s\n", austrdup(result) ); //austrdup( a function used to convert UChar* to char*)
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* free(result);
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* }
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* // output, with different testArgs:
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* // output: The disk "MyDisk" contains 100 files.
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* // output: The disk "MyDisk" contains one file.
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* // output: The disk "MyDisk" contains no files.
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* \endcode
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* </pre>
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*
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*
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* Example 3:
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* <pre>
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* \code
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* UChar* str;
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* UChar* str1;
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* UErrorCode status = U_ZERO_ERROR;
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* UChar *result;
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* UChar pattern[100];
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* UChar expected[100];
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* int32_t resultlength,resultLengthOut;
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* str=(UChar*)malloc(sizeof(UChar) * 25);
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* u_uastrcpy(str, "Kirti");
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* str1=(UChar*)malloc(sizeof(UChar) * 25);
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* u_uastrcpy(str1, "female");
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* log_verbose("Testing message format with Select test #1\n:");
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* u_uastrcpy(pattern, "{0} est {1, select, female {all\\u00E9e} other {all\\u00E9}} \\u00E0 Paris.");
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* u_uastrcpy(expected, "Kirti est all\\u00E9e \\u00E0 Paris.");
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* resultlength=0;
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* resultLengthOut=u_formatMessage( "fr", pattern, u_strlen(pattern), NULL, resultlength, &status, str , str1);
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* if(status==U_BUFFER_OVERFLOW_ERROR)
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* {
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* status=U_ZERO_ERROR;
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* resultlength=resultLengthOut+1;
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* result=(UChar*)malloc(sizeof(UChar) * resultlength);
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* u_formatMessage( "fr", pattern, u_strlen(pattern), result, resultlength, &status, str , str1);
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* if(u_strcmp(result, expected)==0)
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* log_verbose("PASS: MessagFormat successful on Select test#1\n");
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* else{
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* log_err("FAIL: Error in MessageFormat on Select test#1\n GOT %s EXPECTED %s\n", austrdup(result),
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* austrdup(expected) );
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* }
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* free(result);
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* }
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* \endcode
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* </pre>
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*/
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/**
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* Format a message for a locale.
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* This function may perform re-ordering of the arguments depending on the
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* locale. For all numeric arguments, double is assumed unless the type is
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* explicitly integer. All choice format arguments must be of type double.
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* @param locale The locale for which the message will be formatted
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* @param pattern The pattern specifying the message's format
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* @param patternLength The length of pattern
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* @param result A pointer to a buffer to receive the formatted message.
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* @param resultLength The maximum size of result.
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* @param status A pointer to an UErrorCode to receive any errors
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* @param ... A variable-length argument list containing the arguments specified
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* in pattern.
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* @return The total buffer size needed; if greater than resultLength, the
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* output was truncated.
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* @see u_parseMessage
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* @stable ICU 2.0
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*/
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U_STABLE int32_t U_EXPORT2
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u_formatMessage(const char *locale,
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const UChar *pattern,
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int32_t patternLength,
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UChar *result,
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int32_t resultLength,
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UErrorCode *status,
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...);
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/**
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* Format a message for a locale.
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* This function may perform re-ordering of the arguments depending on the
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* locale. For all numeric arguments, double is assumed unless the type is
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* explicitly integer. All choice format arguments must be of type double.
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* @param locale The locale for which the message will be formatted
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* @param pattern The pattern specifying the message's format
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* @param patternLength The length of pattern
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* @param result A pointer to a buffer to receive the formatted message.
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* @param resultLength The maximum size of result.
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* @param ap A variable-length argument list containing the arguments specified
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* @param status A pointer to an UErrorCode to receive any errors
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* in pattern.
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* @return The total buffer size needed; if greater than resultLength, the
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* output was truncated.
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* @see u_parseMessage
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* @stable ICU 2.0
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*/
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U_STABLE int32_t U_EXPORT2
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u_vformatMessage( const char *locale,
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const UChar *pattern,
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int32_t patternLength,
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UChar *result,
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int32_t resultLength,
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va_list ap,
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UErrorCode *status);
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/**
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* Parse a message.
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* For numeric arguments, this function will always use doubles. Integer types
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* should not be passed.
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* This function is not able to parse all output from {@link #u_formatMessage }.
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* @param locale The locale for which the message is formatted
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* @param pattern The pattern specifying the message's format
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* @param patternLength The length of pattern
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* @param source The text to parse.
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* @param sourceLength The length of source, or -1 if null-terminated.
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* @param status A pointer to an UErrorCode to receive any errors
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* @param ... A variable-length argument list containing the arguments
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* specified in pattern.
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* @see u_formatMessage
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* @stable ICU 2.0
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*/
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U_STABLE void U_EXPORT2
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u_parseMessage( const char *locale,
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const UChar *pattern,
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int32_t patternLength,
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const UChar *source,
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int32_t sourceLength,
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UErrorCode *status,
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...);
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/**
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* Parse a message.
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* For numeric arguments, this function will always use doubles. Integer types
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* should not be passed.
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* This function is not able to parse all output from {@link #u_formatMessage }.
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* @param locale The locale for which the message is formatted
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* @param pattern The pattern specifying the message's format
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* @param patternLength The length of pattern
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* @param source The text to parse.
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* @param sourceLength The length of source, or -1 if null-terminated.
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* @param ap A variable-length argument list containing the arguments
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* @param status A pointer to an UErrorCode to receive any errors
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* specified in pattern.
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* @see u_formatMessage
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* @stable ICU 2.0
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*/
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U_STABLE void U_EXPORT2
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u_vparseMessage(const char *locale,
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const UChar *pattern,
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int32_t patternLength,
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const UChar *source,
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int32_t sourceLength,
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va_list ap,
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UErrorCode *status);
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/**
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* Format a message for a locale.
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* This function may perform re-ordering of the arguments depending on the
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* locale. For all numeric arguments, double is assumed unless the type is
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* explicitly integer. All choice format arguments must be of type double.
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* @param locale The locale for which the message will be formatted
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* @param pattern The pattern specifying the message's format
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* @param patternLength The length of pattern
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* @param result A pointer to a buffer to receive the formatted message.
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* @param resultLength The maximum size of result.
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* @param status A pointer to an UErrorCode to receive any errors
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* @param ... A variable-length argument list containing the arguments specified
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* in pattern.
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* @param parseError A pointer to UParseError to receive information about errors
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* occurred during parsing.
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* @return The total buffer size needed; if greater than resultLength, the
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* output was truncated.
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* @see u_parseMessage
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* @stable ICU 2.0
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*/
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U_STABLE int32_t U_EXPORT2
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u_formatMessageWithError( const char *locale,
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const UChar *pattern,
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int32_t patternLength,
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UChar *result,
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int32_t resultLength,
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UParseError *parseError,
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UErrorCode *status,
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...);
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/**
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* Format a message for a locale.
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* This function may perform re-ordering of the arguments depending on the
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* locale. For all numeric arguments, double is assumed unless the type is
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* explicitly integer. All choice format arguments must be of type double.
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* @param locale The locale for which the message will be formatted
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* @param pattern The pattern specifying the message's format
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* @param patternLength The length of pattern
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* @param result A pointer to a buffer to receive the formatted message.
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* @param resultLength The maximum size of result.
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* @param parseError A pointer to UParseError to receive information about errors
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* occurred during parsing.
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* @param ap A variable-length argument list containing the arguments specified
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* @param status A pointer to an UErrorCode to receive any errors
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* in pattern.
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* @return The total buffer size needed; if greater than resultLength, the
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* output was truncated.
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* @stable ICU 2.0
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*/
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U_STABLE int32_t U_EXPORT2
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u_vformatMessageWithError( const char *locale,
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const UChar *pattern,
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int32_t patternLength,
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UChar *result,
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int32_t resultLength,
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UParseError* parseError,
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va_list ap,
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UErrorCode *status);
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/**
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* Parse a message.
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* For numeric arguments, this function will always use doubles. Integer types
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* should not be passed.
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* This function is not able to parse all output from {@link #u_formatMessage }.
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* @param locale The locale for which the message is formatted
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* @param pattern The pattern specifying the message's format
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* @param patternLength The length of pattern
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* @param source The text to parse.
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* @param sourceLength The length of source, or -1 if null-terminated.
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* @param parseError A pointer to UParseError to receive information about errors
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* occurred during parsing.
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* @param status A pointer to an UErrorCode to receive any errors
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* @param ... A variable-length argument list containing the arguments
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* specified in pattern.
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* @see u_formatMessage
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* @stable ICU 2.0
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*/
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U_STABLE void U_EXPORT2
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u_parseMessageWithError(const char *locale,
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const UChar *pattern,
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int32_t patternLength,
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const UChar *source,
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int32_t sourceLength,
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UParseError *parseError,
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UErrorCode *status,
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...);
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/**
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* Parse a message.
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* For numeric arguments, this function will always use doubles. Integer types
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* should not be passed.
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* This function is not able to parse all output from {@link #u_formatMessage }.
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* @param locale The locale for which the message is formatted
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* @param pattern The pattern specifying the message's format
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* @param patternLength The length of pattern
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* @param source The text to parse.
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* @param sourceLength The length of source, or -1 if null-terminated.
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* @param ap A variable-length argument list containing the arguments
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* @param parseError A pointer to UParseError to receive information about errors
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* occurred during parsing.
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* @param status A pointer to an UErrorCode to receive any errors
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* specified in pattern.
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* @see u_formatMessage
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* @stable ICU 2.0
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*/
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U_STABLE void U_EXPORT2
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u_vparseMessageWithError(const char *locale,
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const UChar *pattern,
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int32_t patternLength,
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const UChar *source,
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int32_t sourceLength,
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va_list ap,
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UParseError *parseError,
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UErrorCode* status);
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/*----------------------- New experimental API --------------------------- */
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/**
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* The message format object
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* @stable ICU 2.0
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*/
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typedef void* UMessageFormat;
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/**
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* Open a message formatter with given pattern and for the given locale.
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* @param pattern A pattern specifying the format to use.
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* @param patternLength Length of the pattern to use
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* @param locale The locale for which the messages are formatted.
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* @param parseError A pointer to UParseError struct to receive any errors
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* occured during parsing. Can be NULL.
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* @param status A pointer to an UErrorCode to receive any errors.
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* @return A pointer to a UMessageFormat to use for formatting
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* messages, or 0 if an error occurred.
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* @stable ICU 2.0
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*/
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U_STABLE UMessageFormat* U_EXPORT2
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umsg_open( const UChar *pattern,
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int32_t patternLength,
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const char *locale,
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UParseError *parseError,
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UErrorCode *status);
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/**
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* Close a UMessageFormat.
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* Once closed, a UMessageFormat may no longer be used.
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* @param format The formatter to close.
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* @stable ICU 2.0
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*/
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U_STABLE void U_EXPORT2
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umsg_close(UMessageFormat* format);
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#if U_SHOW_CPLUSPLUS_API
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U_NAMESPACE_BEGIN
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/**
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* \class LocalUMessageFormatPointer
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* "Smart pointer" class, closes a UMessageFormat via umsg_close().
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* For most methods see the LocalPointerBase base class.
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*
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* @see LocalPointerBase
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* @see LocalPointer
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* @stable ICU 4.4
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*/
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U_DEFINE_LOCAL_OPEN_POINTER(LocalUMessageFormatPointer, UMessageFormat, umsg_close);
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U_NAMESPACE_END
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#endif
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/**
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* Open a copy of a UMessageFormat.
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* This function performs a deep copy.
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* @param fmt The formatter to copy
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* @param status A pointer to an UErrorCode to receive any errors.
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* @return A pointer to a UDateFormat identical to fmt.
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* @stable ICU 2.0
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*/
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U_STABLE UMessageFormat U_EXPORT2
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umsg_clone(const UMessageFormat *fmt,
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UErrorCode *status);
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/**
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* Sets the locale. This locale is used for fetching default number or date
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* format information.
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* @param fmt The formatter to set
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* @param locale The locale the formatter should use.
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* @stable ICU 2.0
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*/
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U_STABLE void U_EXPORT2
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umsg_setLocale(UMessageFormat *fmt,
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const char* locale);
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/**
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* Gets the locale. This locale is used for fetching default number or date
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* format information.
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* @param fmt The formatter to querry
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* @return the locale.
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* @stable ICU 2.0
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*/
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U_STABLE const char* U_EXPORT2
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umsg_getLocale(const UMessageFormat *fmt);
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/**
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* Sets the pattern.
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* @param fmt The formatter to use
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* @param pattern The pattern to be applied.
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* @param patternLength Length of the pattern to use
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* @param parseError Struct to receive information on position
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* of error if an error is encountered.Can be NULL.
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* @param status Output param set to success/failure code on
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* exit. If the pattern is invalid, this will be
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* set to a failure result.
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* @stable ICU 2.0
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*/
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U_STABLE void U_EXPORT2
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umsg_applyPattern( UMessageFormat *fmt,
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const UChar* pattern,
|
|
int32_t patternLength,
|
|
UParseError* parseError,
|
|
UErrorCode* status);
|
|
|
|
/**
|
|
* Gets the pattern.
|
|
* @param fmt The formatter to use
|
|
* @param result A pointer to a buffer to receive the pattern.
|
|
* @param resultLength The maximum size of result.
|
|
* @param status Output param set to success/failure code on
|
|
* exit. If the pattern is invalid, this will be
|
|
* set to a failure result.
|
|
* @return the pattern of the format
|
|
* @stable ICU 2.0
|
|
*/
|
|
U_STABLE int32_t U_EXPORT2
|
|
umsg_toPattern(const UMessageFormat *fmt,
|
|
UChar* result,
|
|
int32_t resultLength,
|
|
UErrorCode* status);
|
|
|
|
/**
|
|
* Format a message for a locale.
|
|
* This function may perform re-ordering of the arguments depending on the
|
|
* locale. For all numeric arguments, double is assumed unless the type is
|
|
* explicitly integer. All choice format arguments must be of type double.
|
|
* @param fmt The formatter to use
|
|
* @param result A pointer to a buffer to receive the formatted message.
|
|
* @param resultLength The maximum size of result.
|
|
* @param status A pointer to an UErrorCode to receive any errors
|
|
* @param ... A variable-length argument list containing the arguments
|
|
* specified in pattern.
|
|
* @return The total buffer size needed; if greater than resultLength,
|
|
* the output was truncated.
|
|
* @stable ICU 2.0
|
|
*/
|
|
U_STABLE int32_t U_EXPORT2
|
|
umsg_format( const UMessageFormat *fmt,
|
|
UChar *result,
|
|
int32_t resultLength,
|
|
UErrorCode *status,
|
|
...);
|
|
|
|
/**
|
|
* Format a message for a locale.
|
|
* This function may perform re-ordering of the arguments depending on the
|
|
* locale. For all numeric arguments, double is assumed unless the type is
|
|
* explicitly integer. All choice format arguments must be of type double.
|
|
* @param fmt The formatter to use
|
|
* @param result A pointer to a buffer to receive the formatted message.
|
|
* @param resultLength The maximum size of result.
|
|
* @param ap A variable-length argument list containing the arguments
|
|
* @param status A pointer to an UErrorCode to receive any errors
|
|
* specified in pattern.
|
|
* @return The total buffer size needed; if greater than resultLength,
|
|
* the output was truncated.
|
|
* @stable ICU 2.0
|
|
*/
|
|
U_STABLE int32_t U_EXPORT2
|
|
umsg_vformat( const UMessageFormat *fmt,
|
|
UChar *result,
|
|
int32_t resultLength,
|
|
va_list ap,
|
|
UErrorCode *status);
|
|
|
|
/**
|
|
* Parse a message.
|
|
* For numeric arguments, this function will always use doubles. Integer types
|
|
* should not be passed.
|
|
* This function is not able to parse all output from {@link #umsg_format }.
|
|
* @param fmt The formatter to use
|
|
* @param source The text to parse.
|
|
* @param sourceLength The length of source, or -1 if null-terminated.
|
|
* @param count Output param to receive number of elements returned.
|
|
* @param status A pointer to an UErrorCode to receive any errors
|
|
* @param ... A variable-length argument list containing the arguments
|
|
* specified in pattern.
|
|
* @stable ICU 2.0
|
|
*/
|
|
U_STABLE void U_EXPORT2
|
|
umsg_parse( const UMessageFormat *fmt,
|
|
const UChar *source,
|
|
int32_t sourceLength,
|
|
int32_t *count,
|
|
UErrorCode *status,
|
|
...);
|
|
|
|
/**
|
|
* Parse a message.
|
|
* For numeric arguments, this function will always use doubles. Integer types
|
|
* should not be passed.
|
|
* This function is not able to parse all output from {@link #umsg_format }.
|
|
* @param fmt The formatter to use
|
|
* @param source The text to parse.
|
|
* @param sourceLength The length of source, or -1 if null-terminated.
|
|
* @param count Output param to receive number of elements returned.
|
|
* @param ap A variable-length argument list containing the arguments
|
|
* @param status A pointer to an UErrorCode to receive any errors
|
|
* specified in pattern.
|
|
* @see u_formatMessage
|
|
* @stable ICU 2.0
|
|
*/
|
|
U_STABLE void U_EXPORT2
|
|
umsg_vparse(const UMessageFormat *fmt,
|
|
const UChar *source,
|
|
int32_t sourceLength,
|
|
int32_t *count,
|
|
va_list ap,
|
|
UErrorCode *status);
|
|
|
|
|
|
/**
|
|
* Convert an 'apostrophe-friendly' pattern into a standard
|
|
* pattern. Standard patterns treat all apostrophes as
|
|
* quotes, which is problematic in some languages, e.g.
|
|
* French, where apostrophe is commonly used. This utility
|
|
* assumes that only an unpaired apostrophe immediately before
|
|
* a brace is a true quote. Other unpaired apostrophes are paired,
|
|
* and the resulting standard pattern string is returned.
|
|
*
|
|
* <p><b>Note</b> it is not guaranteed that the returned pattern
|
|
* is indeed a valid pattern. The only effect is to convert
|
|
* between patterns having different quoting semantics.
|
|
*
|
|
* @param pattern the 'apostrophe-friendly' patttern to convert
|
|
* @param patternLength the length of pattern, or -1 if unknown and pattern is null-terminated
|
|
* @param dest the buffer for the result, or NULL if preflight only
|
|
* @param destCapacity the length of the buffer, or 0 if preflighting
|
|
* @param ec the error code
|
|
* @return the length of the resulting text, not including trailing null
|
|
* if buffer has room for the trailing null, it is provided, otherwise
|
|
* not
|
|
* @stable ICU 3.4
|
|
*/
|
|
U_STABLE int32_t U_EXPORT2
|
|
umsg_autoQuoteApostrophe(const UChar* pattern,
|
|
int32_t patternLength,
|
|
UChar* dest,
|
|
int32_t destCapacity,
|
|
UErrorCode* ec);
|
|
|
|
#endif /* #if !UCONFIG_NO_FORMATTING */
|
|
|
|
#endif
|