diff -r 000000000000 -r 6474c204b198 intl/icu/source/i18n/unicode/umsg.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/intl/icu/source/i18n/unicode/umsg.h Wed Dec 31 06:09:35 2014 +0100 @@ -0,0 +1,623 @@ +/******************************************************************** + * COPYRIGHT: + * Copyright (c) 1997-2011, International Business Machines Corporation and + * others. All Rights Reserved. + * Copyright (C) 2010 , Yahoo! Inc. + ******************************************************************** + * + * file name: umsg.h + * encoding: US-ASCII + * 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 + +/** + * \file + * \brief C API: MessageFormat + * + *

MessageFormat C API

+ * + *

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. + * + *

The opaque UMessageFormat type is a thin C wrapper around + * a C++ MessageFormat. It is constructed from a pattern string + * with arguments in {curly braces} which will be replaced by formatted values. + * + *

Currently, the C API supports only numbered arguments. + * + *

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. + * + *

Here are some examples of C API usage: + * Example 1: + * 

+ * \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
+ *
+ * Typically, the message format will come from resources, and the + * arguments will be dynamically set at runtime. + *

+ * Example 2: + * 

+ * \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
+ *
+ * + * + * Example 3: + * 
+ * \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
+ *
+ */ + +/** + * 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. + * + *

Note 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