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