574 lines
16 KiB
C++
574 lines
16 KiB
C++
/*
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*******************************************************************************
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*
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* Copyright (C) 1999-2003, International Business Machines
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* Corporation and others. All Rights Reserved.
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*
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*******************************************************************************
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* file name: umsg.cpp
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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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* This is a C wrapper to MessageFormat C++ API.
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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. Changed implementation of old API's
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* Removed pattern parser.
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*
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*/
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#include "unicode/utypes.h"
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#if !UCONFIG_NO_FORMATTING
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#include "unicode/umsg.h"
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#include "unicode/ustring.h"
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#include "unicode/fmtable.h"
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#include "unicode/msgfmt.h"
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#include "unicode/unistr.h"
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#include "cpputils.h"
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U_NAMESPACE_USE
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U_CAPI int32_t
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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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va_list ap;
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int32_t actLen;
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//argument checking defered to subsequent method calls
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// start vararg processing
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va_start(ap, status);
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actLen = u_vformatMessage(locale,pattern,patternLength,result,resultLength,ap,status);
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// end vararg processing
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va_end(ap);
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return actLen;
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}
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U_CAPI 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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//argument checking defered to subsequent method calls
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UMessageFormat *fmt = umsg_open(pattern,patternLength,locale,NULL,status);
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int32_t retVal = umsg_vformat(fmt,result,resultLength,ap,status);
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umsg_close(fmt);
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return retVal;
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}
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U_CAPI int32_t
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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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va_list ap;
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int32_t actLen;
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//argument checking defered to subsequent method calls
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// start vararg processing
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va_start(ap, status);
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actLen = u_vformatMessageWithError(locale,pattern,patternLength,result,resultLength,parseError,ap,status);
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// end vararg processing
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va_end(ap);
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return actLen;
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}
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U_CAPI 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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//argument checking defered to subsequent method calls
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UMessageFormat *fmt = umsg_open(pattern,patternLength,locale,parseError,status);
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int32_t retVal = umsg_vformat(fmt,result,resultLength,ap,status);
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umsg_close(fmt);
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return retVal;
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}
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// For parse, do the reverse of format:
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// 1. Call through to the C++ APIs
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// 2. Just assume the user passed in enough arguments.
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// 3. Iterate through each formattable returned, and assign to the arguments
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U_CAPI void
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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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va_list ap;
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//argument checking defered to subsequent method calls
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// start vararg processing
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va_start(ap, status);
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u_vparseMessage(locale,pattern,patternLength,source,sourceLength,ap,status);
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// end vararg processing
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va_end(ap);
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}
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U_CAPI 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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//argument checking defered to subsequent method calls
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UMessageFormat *fmt = umsg_open(pattern,patternLength,locale,NULL,status);
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int32_t count = 0;
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umsg_vparse(fmt,source,sourceLength,&count,ap,status);
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umsg_close(fmt);
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}
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U_CAPI void
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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 *error,
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UErrorCode *status,
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...)
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{
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va_list ap;
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//argument checking defered to subsequent method calls
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// start vararg processing
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va_start(ap, status);
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u_vparseMessageWithError(locale,pattern,patternLength,source,sourceLength,ap,error,status);
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// end vararg processing
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va_end(ap);
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}
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U_CAPI 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 *error,
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UErrorCode* status)
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{
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//argument checking defered to subsequent method calls
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UMessageFormat *fmt = umsg_open(pattern,patternLength,locale,error,status);
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int32_t count = 0;
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umsg_vparse(fmt,source,sourceLength,&count,ap,status);
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umsg_close(fmt);
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}
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//////////////////////////////////////////////////////////////////////////////////
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//
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// Message format C API
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//
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/////////////////////////////////////////////////////////////////////////////////
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U_CAPI 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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//check arguments
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if(status==NULL || U_FAILURE(*status))
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{
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return 0;
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}
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if(pattern==NULL||patternLength<-1){
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*status=U_ILLEGAL_ARGUMENT_ERROR;
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return 0;
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}
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UParseError tErr;
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if(parseError==NULL)
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{
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parseError = &tErr;
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}
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UMessageFormat* retVal = 0;
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int32_t len = (patternLength == -1 ? u_strlen(pattern) : patternLength);
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UnicodeString patString((patternLength == -1 ? TRUE:FALSE), pattern,len);
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retVal = (UMessageFormat*) new MessageFormat(pattern,Locale(locale),*parseError,*status);
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if(retVal == 0) {
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*status = U_MEMORY_ALLOCATION_ERROR;
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return 0;
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}
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return retVal;
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}
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U_CAPI void U_EXPORT2
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umsg_close(UMessageFormat* format)
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{
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//check arguments
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if(format==NULL){
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return;
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}
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delete (MessageFormat*) format;
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}
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U_CAPI 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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//check arguments
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if(status==NULL || U_FAILURE(*status)){
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return NULL;
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}
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if(fmt==NULL){
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*status = U_ILLEGAL_ARGUMENT_ERROR;
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return NULL;
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}
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UMessageFormat retVal = (UMessageFormat)((MessageFormat*)fmt)->clone();
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if(retVal == 0) {
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*status = U_MEMORY_ALLOCATION_ERROR;
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return 0;
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}
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return retVal;
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}
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U_CAPI void U_EXPORT2
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umsg_setLocale(UMessageFormat *fmt, const char* locale)
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{
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//check arguments
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if(fmt==NULL){
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return;
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}
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((MessageFormat*)fmt)->setLocale(Locale(locale));
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}
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U_CAPI const char* U_EXPORT2
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umsg_getLocale(UMessageFormat *fmt)
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{
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//check arguments
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if(fmt==NULL){
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return "";
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}
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return ((MessageFormat*)fmt)->getLocale().getName();
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}
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U_CAPI void U_EXPORT2
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umsg_applyPattern(UMessageFormat *fmt,
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const UChar* pattern,
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int32_t patternLength,
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UParseError* parseError,
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UErrorCode* status)
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{
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//check arguments
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UParseError tErr;
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if(status ==NULL||U_FAILURE(*status)){
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return ;
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}
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if(fmt==NULL||pattern==NULL||patternLength<-1){
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*status=U_ILLEGAL_ARGUMENT_ERROR;
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return ;
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}
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if(parseError==NULL){
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parseError = &tErr;
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}
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if(patternLength<-1){
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patternLength=u_strlen(pattern);
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}
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((MessageFormat*)fmt)->applyPattern(UnicodeString(pattern,patternLength),*parseError,*status);
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}
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U_CAPI int32_t U_EXPORT2
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umsg_toPattern(UMessageFormat *fmt,
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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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//check arguments
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if(status ==NULL||U_FAILURE(*status)){
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return -1;
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}
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if(fmt==NULL||resultLength<0 || (resultLength>0 && result==0)){
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*status=U_ILLEGAL_ARGUMENT_ERROR;
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return -1;
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}
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UnicodeString res;
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if(!(result==NULL && resultLength==0)) {
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// NULL destination for pure preflighting: empty dummy string
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// otherwise, alias the destination buffer
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res.setTo(result, 0, resultLength);
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}
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((MessageFormat*)fmt)->toPattern(res);
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return res.extract(result, resultLength, *status);
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}
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U_CAPI int32_t
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umsg_format( UMessageFormat *fmt,
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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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va_list ap;
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int32_t actLen;
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//argument checking defered to last method call umsg_vformat which
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//saves time when arguments are valid and we dont care when arguments are not
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//since we return an error anyway
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// start vararg processing
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va_start(ap, status);
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actLen = umsg_vformat(fmt,result,resultLength,ap,status);
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// end vararg processing
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va_end(ap);
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return actLen;
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}
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U_NAMESPACE_BEGIN
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/**
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* This class isolates our access to private internal methods of
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* MessageFormat. It is never instantiated; it exists only for C++
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* access management.
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*/
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class MessageFormatAdapter {
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public:
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static const Formattable::Type* getArgTypeList(const MessageFormat& m,
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int32_t& count);
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};
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const Formattable::Type*
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MessageFormatAdapter::getArgTypeList(const MessageFormat& m,
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int32_t& count) {
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return m.getArgTypeList(count);
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}
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U_NAMESPACE_END
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U_CAPI int32_t U_EXPORT2
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umsg_vformat( UMessageFormat *fmt,
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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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//check arguments
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if(status==0 || U_FAILURE(*status))
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{
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return -1;
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}
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if(fmt==NULL||resultLength<0 || (resultLength>0 && result==0)) {
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*status=U_ILLEGAL_ARGUMENT_ERROR;
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return -1;
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}
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int32_t count =0;
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const Formattable::Type* argTypes =
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MessageFormatAdapter::getArgTypeList(*(MessageFormat*)fmt, count);
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// Allocate at least one element. Allocating an array of length
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// zero causes problems on some platforms (e.g. Win32).
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Formattable* args = new Formattable[count ? count : 1];
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// iterate through the vararg list, and get the arguments out
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for(int32_t i = 0; i < count; ++i) {
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UChar *stringVal;
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double tDouble=0;
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int32_t tInt =0;
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UDate tempDate = 0;
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switch(argTypes[i]) {
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case Formattable::kDate:
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tempDate = va_arg(ap, UDate);
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args[i].setDate(tempDate);
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break;
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case Formattable::kDouble:
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tDouble =va_arg(ap, double);
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args[i].setDouble(tDouble);
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break;
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case Formattable::kLong:
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tInt = va_arg(ap, int32_t);
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args[i].setLong(tInt);
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break;
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case Formattable::kString:
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// For some reason, a temporary is needed
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stringVal = va_arg(ap, UChar*);
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if(stringVal){
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args[i].setString(stringVal);
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}else{
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*status=U_ILLEGAL_ARGUMENT_ERROR;
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}
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break;
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case Formattable::kArray:
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// throw away this argument
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// this is highly platform-dependent, and probably won't work
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// so, if you try to skip arguments in the list (and not use them)
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// you'll probably crash
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va_arg(ap, int);
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break;
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}
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}
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UnicodeString resultStr;
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FieldPosition fieldPosition(0);
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/* format the message */
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((MessageFormat*)fmt)->format(args,count,resultStr,fieldPosition,*status);
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delete[] args;
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if(U_FAILURE(*status)){
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return -1;
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}
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return resultStr.extract(result, resultLength, *status);
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}
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U_CAPI void
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umsg_parse( UMessageFormat *fmt,
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const UChar *source,
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int32_t sourceLength,
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int32_t *count,
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UErrorCode *status,
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...)
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{
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va_list ap;
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//argument checking defered to last method call umsg_vparse which
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//saves time when arguments are valid and we dont care when arguments are not
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//since we return an error anyway
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// start vararg processing
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va_start(ap, status);
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umsg_vparse(fmt,source,sourceLength,count,ap,status);
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// end vararg processing
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va_end(ap);
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}
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U_CAPI void U_EXPORT2
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umsg_vparse(UMessageFormat *fmt,
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const UChar *source,
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int32_t sourceLength,
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int32_t *count,
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va_list ap,
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UErrorCode *status)
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{
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//check arguments
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if(status==NULL||U_FAILURE(*status))
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{
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return;
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}
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if(fmt==NULL||source==NULL || sourceLength<-1 || count==NULL){
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*status=U_ILLEGAL_ARGUMENT_ERROR;
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return;
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}
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if(sourceLength==-1){
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sourceLength=u_strlen(source);
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}
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UnicodeString srcString(source,sourceLength);
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Formattable *args = ((MessageFormat*)fmt)->parse(source,*count,*status);
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UDate *aDate;
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double *aDouble;
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UChar *aString;
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int32_t* aInt;
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UnicodeString temp;
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int len =0;
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// assign formattables to varargs
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for(int32_t i = 0; i < *count; i++) {
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switch(args[i].getType()) {
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case Formattable::kDate:
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aDate = va_arg(ap, UDate*);
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if(aDate){
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*aDate = args[i].getDate();
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}else{
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*status=U_ILLEGAL_ARGUMENT_ERROR;
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}
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break;
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case Formattable::kDouble:
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aDouble = va_arg(ap, double*);
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if(aDouble){
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*aDouble = args[i].getDouble();
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}else{
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*status=U_ILLEGAL_ARGUMENT_ERROR;
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}
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break;
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case Formattable::kLong:
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aInt = va_arg(ap, int32_t*);
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if(aInt){
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*aInt = (int32_t) args[i].getLong();
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}else{
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*status=U_ILLEGAL_ARGUMENT_ERROR;
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}
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break;
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case Formattable::kString:
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aString = va_arg(ap, UChar*);
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if(aString){
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args[i].getString(temp);
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len = temp.length();
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temp.extract(0,len,aString);
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aString[len]=0;
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}else{
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*status= U_ILLEGAL_ARGUMENT_ERROR;
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}
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break;
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// better not happen!
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case Formattable::kArray:
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// DIE
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break;
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}
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}
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// clean up
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delete [] args;
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}
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#endif /* #if !UCONFIG_NO_FORMATTING */
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