1209 lines
42 KiB
C++
1209 lines
42 KiB
C++
/*
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*******************************************************************************
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* Copyright (C) 2011, International Business Machines
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* Corporation and others. All Rights Reserved.
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*******************************************************************************
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* file name: messagepattern.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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* created on: 2011mar14
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* created by: Markus W. Scherer
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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/messagepattern.h"
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#include "unicode/unistr.h"
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#include "cmemory.h"
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#include "cstring.h"
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#include "messageimpl.h"
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#include "patternprops.h"
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#include "putilimp.h"
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#include "uassert.h"
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U_NAMESPACE_BEGIN
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// Unicode character/code point constants ---------------------------------- ***
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static const UChar u_pound=0x23;
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static const UChar u_apos=0x27;
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static const UChar u_plus=0x2B;
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static const UChar u_comma=0x2C;
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static const UChar u_minus=0x2D;
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static const UChar u_dot=0x2E;
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static const UChar u_colon=0x3A;
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static const UChar u_lessThan=0x3C;
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static const UChar u_equal=0x3D;
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static const UChar u_A=0x41;
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static const UChar u_C=0x43;
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static const UChar u_E=0x45;
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static const UChar u_H=0x48;
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static const UChar u_I=0x49;
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static const UChar u_L=0x4C;
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static const UChar u_O=0x4F;
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static const UChar u_P=0x50;
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static const UChar u_R=0x52;
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static const UChar u_S=0x53;
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static const UChar u_T=0x54;
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static const UChar u_U=0x55;
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static const UChar u_Z=0x5A;
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static const UChar u_a=0x61;
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static const UChar u_c=0x63;
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static const UChar u_e=0x65;
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static const UChar u_f=0x66;
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static const UChar u_h=0x68;
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static const UChar u_i=0x69;
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static const UChar u_l=0x6C;
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static const UChar u_o=0x6F;
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static const UChar u_p=0x70;
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static const UChar u_r=0x72;
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static const UChar u_s=0x73;
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static const UChar u_t=0x74;
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static const UChar u_u=0x75;
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static const UChar u_z=0x7A;
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static const UChar u_leftCurlyBrace=0x7B;
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static const UChar u_pipe=0x7C;
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static const UChar u_rightCurlyBrace=0x7D;
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static const UChar u_lessOrEqual=0x2264; // U+2264 is <=
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static const UChar kOffsetColon[]={ // "offset:"
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u_o, u_f, u_f, u_s, u_e, u_t, u_colon
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};
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static const UChar kOther[]={ // "other"
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u_o, u_t, u_h, u_e, u_r
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};
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// MessagePatternList ------------------------------------------------------ ***
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template<typename T, int32_t stackCapacity>
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class MessagePatternList {
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public:
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MessagePatternList() {}
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void copyFrom(const MessagePatternList<T, stackCapacity> &other,
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int32_t length,
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UErrorCode &errorCode);
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UBool ensureCapacityForOneMore(int32_t oldLength, UErrorCode &errorCode);
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UBool memEquals(const MessagePatternList<T, stackCapacity> &other, int32_t length) const {
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return 0==uprv_memcmp(a.getAlias(), other.a.getAlias(), length*sizeof(T));
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}
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MaybeStackArray<T, stackCapacity> a;
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};
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template<typename T, int32_t stackCapacity>
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void
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MessagePatternList<T, stackCapacity>::copyFrom(
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const MessagePatternList<T, stackCapacity> &other,
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int32_t length,
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UErrorCode &errorCode) {
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if(U_SUCCESS(errorCode) && length>0) {
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if(length>a.getCapacity() && NULL==a.resize(length)) {
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errorCode=U_MEMORY_ALLOCATION_ERROR;
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return;
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}
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uprv_memcpy(a.getAlias(), other.a.getAlias(), length*sizeof(T));
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}
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}
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template<typename T, int32_t stackCapacity>
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UBool
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MessagePatternList<T, stackCapacity>::ensureCapacityForOneMore(int32_t oldLength, UErrorCode &errorCode) {
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if(U_FAILURE(errorCode)) {
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return FALSE;
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}
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if(a.getCapacity()>oldLength || a.resize(2*oldLength, oldLength)!=NULL) {
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return TRUE;
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}
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errorCode=U_MEMORY_ALLOCATION_ERROR;
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return FALSE;
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}
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// MessagePatternList specializations -------------------------------------- ***
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class MessagePatternDoubleList : public MessagePatternList<double, 8> {
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};
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class MessagePatternPartsList : public MessagePatternList<MessagePattern::Part, 32> {
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};
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// MessagePattern constructors etc. ---------------------------------------- ***
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MessagePattern::MessagePattern(UErrorCode &errorCode)
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: aposMode(UCONFIG_MSGPAT_DEFAULT_APOSTROPHE_MODE),
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partsList(NULL), parts(NULL), partsLength(0),
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numericValuesList(NULL), numericValues(NULL), numericValuesLength(0),
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hasArgNames(FALSE), hasArgNumbers(FALSE), needsAutoQuoting(FALSE) {
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init(errorCode);
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}
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MessagePattern::MessagePattern(UMessagePatternApostropheMode mode, UErrorCode &errorCode)
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: aposMode(mode),
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partsList(NULL), parts(NULL), partsLength(0),
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numericValuesList(NULL), numericValues(NULL), numericValuesLength(0),
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hasArgNames(FALSE), hasArgNumbers(FALSE), needsAutoQuoting(FALSE) {
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init(errorCode);
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}
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MessagePattern::MessagePattern(const UnicodeString &pattern, UParseError *parseError, UErrorCode &errorCode)
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: aposMode(UCONFIG_MSGPAT_DEFAULT_APOSTROPHE_MODE),
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partsList(NULL), parts(NULL), partsLength(0),
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numericValuesList(NULL), numericValues(NULL), numericValuesLength(0),
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hasArgNames(FALSE), hasArgNumbers(FALSE), needsAutoQuoting(FALSE) {
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if(init(errorCode)) {
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parse(pattern, parseError, errorCode);
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}
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}
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UBool
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MessagePattern::init(UErrorCode &errorCode) {
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if(U_FAILURE(errorCode)) {
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return FALSE;
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}
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partsList=new MessagePatternPartsList();
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if(partsList==NULL) {
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errorCode=U_MEMORY_ALLOCATION_ERROR;
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return FALSE;
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}
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parts=partsList->a.getAlias();
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return TRUE;
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}
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MessagePattern::MessagePattern(const MessagePattern &other)
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: aposMode(other.aposMode), msg(other.msg),
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partsList(NULL), parts(NULL), partsLength(0),
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numericValuesList(NULL), numericValues(NULL), numericValuesLength(0),
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hasArgNames(other.hasArgNames), hasArgNumbers(other.hasArgNumbers),
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needsAutoQuoting(other.needsAutoQuoting) {
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UErrorCode errorCode=U_ZERO_ERROR;
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if(!copyStorage(other, errorCode)) {
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clear();
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}
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}
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MessagePattern &
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MessagePattern::operator=(const MessagePattern &other) {
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if(this==&other) {
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return *this;
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}
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aposMode=other.aposMode;
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msg=other.msg;
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hasArgNames=other.hasArgNames;
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hasArgNumbers=other.hasArgNumbers;
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needsAutoQuoting=other.needsAutoQuoting;
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UErrorCode errorCode=U_ZERO_ERROR;
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if(!copyStorage(other, errorCode)) {
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clear();
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}
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return *this;
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}
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UBool
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MessagePattern::copyStorage(const MessagePattern &other, UErrorCode &errorCode) {
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if(U_FAILURE(errorCode)) {
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return FALSE;
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}
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parts=NULL;
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partsLength=0;
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numericValues=NULL;
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numericValuesLength=0;
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if(partsList==NULL) {
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partsList=new MessagePatternPartsList();
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if(partsList==NULL) {
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errorCode=U_MEMORY_ALLOCATION_ERROR;
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return FALSE;
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}
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parts=partsList->a.getAlias();
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}
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if(other.partsLength>0) {
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partsList->copyFrom(*other.partsList, other.partsLength, errorCode);
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if(U_FAILURE(errorCode)) {
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return FALSE;
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}
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parts=partsList->a.getAlias();
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partsLength=other.partsLength;
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}
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if(other.numericValuesLength>0) {
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if(numericValuesList==NULL) {
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numericValuesList=new MessagePatternDoubleList();
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if(numericValuesList==NULL) {
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errorCode=U_MEMORY_ALLOCATION_ERROR;
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return FALSE;
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}
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numericValues=numericValuesList->a.getAlias();
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}
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numericValuesList->copyFrom(
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*other.numericValuesList, other.numericValuesLength, errorCode);
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if(U_FAILURE(errorCode)) {
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return FALSE;
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}
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numericValues=numericValuesList->a.getAlias();
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numericValuesLength=other.numericValuesLength;
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}
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return TRUE;
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}
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MessagePattern::~MessagePattern() {
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delete partsList;
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delete numericValuesList;
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}
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// MessagePattern API ------------------------------------------------------ ***
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MessagePattern &
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MessagePattern::parse(const UnicodeString &pattern, UParseError *parseError, UErrorCode &errorCode) {
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preParse(pattern, parseError, errorCode);
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parseMessage(0, 0, 0, UMSGPAT_ARG_TYPE_NONE, parseError, errorCode);
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postParse();
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return *this;
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}
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MessagePattern &
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MessagePattern::parseChoiceStyle(const UnicodeString &pattern,
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UParseError *parseError, UErrorCode &errorCode) {
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preParse(pattern, parseError, errorCode);
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parseChoiceStyle(0, 0, parseError, errorCode);
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postParse();
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return *this;
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}
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MessagePattern &
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MessagePattern::parsePluralStyle(const UnicodeString &pattern,
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UParseError *parseError, UErrorCode &errorCode) {
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preParse(pattern, parseError, errorCode);
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parsePluralOrSelectStyle(UMSGPAT_ARG_TYPE_PLURAL, 0, 0, parseError, errorCode);
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postParse();
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return *this;
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}
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MessagePattern &
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MessagePattern::parseSelectStyle(const UnicodeString &pattern,
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UParseError *parseError, UErrorCode &errorCode) {
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preParse(pattern, parseError, errorCode);
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parsePluralOrSelectStyle(UMSGPAT_ARG_TYPE_SELECT, 0, 0, parseError, errorCode);
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postParse();
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return *this;
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}
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void
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MessagePattern::clear() {
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// Mostly the same as preParse().
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msg.remove();
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hasArgNames=hasArgNumbers=FALSE;
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needsAutoQuoting=FALSE;
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partsLength=0;
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numericValuesLength=0;
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}
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UBool
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MessagePattern::operator==(const MessagePattern &other) const {
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if(this==&other) {
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return TRUE;
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}
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return
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aposMode==other.aposMode &&
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msg==other.msg &&
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// parts.equals(o.parts)
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partsLength==other.partsLength &&
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(partsLength==0 || partsList->memEquals(*other.partsList, partsLength));
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// No need to compare numericValues if msg and parts are the same.
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}
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int32_t
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MessagePattern::hashCode() const {
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int32_t hash=(aposMode*37+msg.hashCode())*37+partsLength;
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for(int32_t i=0; i<partsLength; ++i) {
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hash=hash*37+parts[i].hashCode();
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}
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return hash;
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}
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int32_t
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MessagePattern::validateArgumentName(const UnicodeString &name) {
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if(!PatternProps::isIdentifier(name.getBuffer(), name.length())) {
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return UMSGPAT_ARG_NAME_NOT_VALID;
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}
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return parseArgNumber(name, 0, name.length());
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}
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UnicodeString
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MessagePattern::autoQuoteApostropheDeep() const {
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if(!needsAutoQuoting) {
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return msg;
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}
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UnicodeString modified(msg);
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// Iterate backward so that the insertion indexes do not change.
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int32_t count=countParts();
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for(int32_t i=count; i>0;) {
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const Part &part=getPart(--i);
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if(part.getType()==UMSGPAT_PART_TYPE_INSERT_CHAR) {
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modified.insert(part.index, part.value);
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}
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}
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return modified;
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}
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double
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MessagePattern::getNumericValue(const Part &part) const {
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UMessagePatternPartType type=part.type;
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if(type==UMSGPAT_PART_TYPE_ARG_INT) {
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return part.value;
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} else if(type==UMSGPAT_PART_TYPE_ARG_DOUBLE) {
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return numericValues[part.value];
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} else {
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return UMSGPAT_NO_NUMERIC_VALUE;
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}
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}
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/**
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* Returns the "offset:" value of a PluralFormat argument, or 0 if none is specified.
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* @param pluralStart the index of the first PluralFormat argument style part. (0..countParts()-1)
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* @return the "offset:" value.
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* @draft ICU 4.8
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*/
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double
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MessagePattern::getPluralOffset(int32_t pluralStart) const {
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const Part &part=getPart(pluralStart);
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if(Part::hasNumericValue(part.type)) {
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return getNumericValue(part);
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} else {
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return 0;
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}
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}
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// MessagePattern::Part ---------------------------------------------------- ***
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UBool
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MessagePattern::Part::operator==(const Part &other) const {
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if(this==&other) {
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return TRUE;
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}
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return
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type==other.type &&
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index==other.index &&
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length==other.length &&
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value==other.value &&
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limitPartIndex==other.limitPartIndex;
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}
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// MessagePattern parser --------------------------------------------------- ***
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void
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MessagePattern::preParse(const UnicodeString &pattern, UParseError *parseError, UErrorCode &errorCode) {
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if(U_FAILURE(errorCode)) {
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return;
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}
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if(parseError!=NULL) {
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parseError->line=0;
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parseError->offset=0;
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parseError->preContext[0]=0;
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parseError->postContext[0]=0;
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}
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msg=pattern;
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hasArgNames=hasArgNumbers=FALSE;
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needsAutoQuoting=FALSE;
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partsLength=0;
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numericValuesLength=0;
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}
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void
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MessagePattern::postParse() {
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if(partsList!=NULL) {
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parts=partsList->a.getAlias();
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}
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if(numericValuesList!=NULL) {
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numericValues=numericValuesList->a.getAlias();
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}
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}
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int32_t
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MessagePattern::parseMessage(int32_t index, int32_t msgStartLength,
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int32_t nestingLevel, UMessagePatternArgType parentType,
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UParseError *parseError, UErrorCode &errorCode) {
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if(U_FAILURE(errorCode)) {
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return 0;
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}
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if(nestingLevel>Part::MAX_VALUE) {
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errorCode=U_INDEX_OUTOFBOUNDS_ERROR;
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return 0;
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}
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int32_t msgStart=partsLength;
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addPart(UMSGPAT_PART_TYPE_MSG_START, index, msgStartLength, nestingLevel, errorCode);
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index+=msgStartLength;
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for(;;) { // while(index<msg.length()) with U_FAILURE(errorCode) check
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if(U_FAILURE(errorCode)) {
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return 0;
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}
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if(index>=msg.length()) {
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break;
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}
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UChar c=msg.charAt(index++);
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if(c==u_apos) {
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if(index==msg.length()) {
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// The apostrophe is the last character in the pattern.
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// Add a Part for auto-quoting.
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addPart(UMSGPAT_PART_TYPE_INSERT_CHAR, index, 0,
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u_apos, errorCode); // value=char to be inserted
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needsAutoQuoting=TRUE;
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} else {
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c=msg.charAt(index);
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if(c==u_apos) {
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// double apostrophe, skip the second one
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addPart(UMSGPAT_PART_TYPE_SKIP_SYNTAX, index++, 1, 0, errorCode);
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} else if(
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aposMode==UMSGPAT_APOS_DOUBLE_REQUIRED ||
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c==u_leftCurlyBrace || c==u_rightCurlyBrace ||
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(parentType==UMSGPAT_ARG_TYPE_CHOICE && c==u_pipe) ||
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(parentType==UMSGPAT_ARG_TYPE_PLURAL && c==u_pound)
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) {
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// skip the quote-starting apostrophe
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addPart(UMSGPAT_PART_TYPE_SKIP_SYNTAX, index-1, 1, 0, errorCode);
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// find the end of the quoted literal text
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for(;;) {
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index=msg.indexOf(u_apos, index+1);
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if(index>=0) {
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if(/*(index+1)<msg.length() &&*/ msg.charAt(index+1)==u_apos) {
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// double apostrophe inside quoted literal text
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// still encodes a single apostrophe, skip the second one
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addPart(UMSGPAT_PART_TYPE_SKIP_SYNTAX, ++index, 1, 0, errorCode);
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} else {
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// skip the quote-ending apostrophe
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addPart(UMSGPAT_PART_TYPE_SKIP_SYNTAX, index++, 1, 0, errorCode);
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break;
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}
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} else {
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// The quoted text reaches to the end of the of the message.
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index=msg.length();
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// Add a Part for auto-quoting.
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addPart(UMSGPAT_PART_TYPE_INSERT_CHAR, index, 0,
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u_apos, errorCode); // value=char to be inserted
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needsAutoQuoting=TRUE;
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break;
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}
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}
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} else {
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// Interpret the apostrophe as literal text.
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// Add a Part for auto-quoting.
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addPart(UMSGPAT_PART_TYPE_INSERT_CHAR, index, 0,
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u_apos, errorCode); // value=char to be inserted
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needsAutoQuoting=TRUE;
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}
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}
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} else if(parentType==UMSGPAT_ARG_TYPE_PLURAL && c==u_pound) {
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// The unquoted # in a plural message fragment will be replaced
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// with the (number-offset).
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addPart(UMSGPAT_PART_TYPE_REPLACE_NUMBER, index-1, 1, 0, errorCode);
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} else if(c==u_leftCurlyBrace) {
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index=parseArg(index-1, 1, nestingLevel, parseError, errorCode);
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} else if((nestingLevel>0 && c==u_rightCurlyBrace) ||
|
|
(parentType==UMSGPAT_ARG_TYPE_CHOICE && c==u_pipe)) {
|
|
// Finish the message before the terminator.
|
|
// In a choice style, report the "}" substring only for the following ARG_LIMIT,
|
|
// not for this MSG_LIMIT.
|
|
int32_t limitLength=(parentType==UMSGPAT_ARG_TYPE_CHOICE && c==u_rightCurlyBrace) ? 0 : 1;
|
|
addLimitPart(msgStart, UMSGPAT_PART_TYPE_MSG_LIMIT, index-1, limitLength,
|
|
nestingLevel, errorCode);
|
|
if(parentType==UMSGPAT_ARG_TYPE_CHOICE) {
|
|
// Let the choice style parser see the '}' or '|'.
|
|
return index-1;
|
|
} else {
|
|
// continue parsing after the '}'
|
|
return index;
|
|
}
|
|
} // else: c is part of literal text
|
|
}
|
|
if(nestingLevel>0 && !inTopLevelChoiceMessage(nestingLevel, parentType)) {
|
|
setParseError(parseError, 0); // Unmatched '{' braces in message.
|
|
errorCode=U_UNMATCHED_BRACES;
|
|
return 0;
|
|
}
|
|
addLimitPart(msgStart, UMSGPAT_PART_TYPE_MSG_LIMIT, index, 0, nestingLevel, errorCode);
|
|
return index;
|
|
}
|
|
|
|
int32_t
|
|
MessagePattern::parseArg(int32_t index, int32_t argStartLength, int32_t nestingLevel,
|
|
UParseError *parseError, UErrorCode &errorCode) {
|
|
int32_t argStart=partsLength;
|
|
UMessagePatternArgType argType=UMSGPAT_ARG_TYPE_NONE;
|
|
addPart(UMSGPAT_PART_TYPE_ARG_START, index, argStartLength, argType, errorCode);
|
|
if(U_FAILURE(errorCode)) {
|
|
return 0;
|
|
}
|
|
int32_t nameIndex=index=skipWhiteSpace(index+argStartLength);
|
|
if(index==msg.length()) {
|
|
setParseError(parseError, 0); // Unmatched '{' braces in message.
|
|
errorCode=U_UNMATCHED_BRACES;
|
|
return 0;
|
|
}
|
|
// parse argument name or number
|
|
index=skipIdentifier(index);
|
|
int32_t number=parseArgNumber(nameIndex, index);
|
|
if(number>=0) {
|
|
int32_t length=index-nameIndex;
|
|
if(length>Part::MAX_LENGTH || number>Part::MAX_VALUE) {
|
|
setParseError(parseError, nameIndex); // Argument number too large.
|
|
errorCode=U_INDEX_OUTOFBOUNDS_ERROR;
|
|
return 0;
|
|
}
|
|
hasArgNumbers=TRUE;
|
|
addPart(UMSGPAT_PART_TYPE_ARG_NUMBER, nameIndex, length, number, errorCode);
|
|
} else if(number==UMSGPAT_ARG_NAME_NOT_NUMBER) {
|
|
int32_t length=index-nameIndex;
|
|
if(length>Part::MAX_LENGTH) {
|
|
setParseError(parseError, nameIndex); // Argument name too long.
|
|
errorCode=U_INDEX_OUTOFBOUNDS_ERROR;
|
|
return 0;
|
|
}
|
|
hasArgNames=TRUE;
|
|
addPart(UMSGPAT_PART_TYPE_ARG_NAME, nameIndex, length, 0, errorCode);
|
|
} else { // number<-1 (ARG_NAME_NOT_VALID)
|
|
setParseError(parseError, nameIndex); // Bad argument syntax.
|
|
errorCode=U_PATTERN_SYNTAX_ERROR;
|
|
return 0;
|
|
}
|
|
index=skipWhiteSpace(index);
|
|
if(index==msg.length()) {
|
|
setParseError(parseError, 0); // Unmatched '{' braces in message.
|
|
errorCode=U_UNMATCHED_BRACES;
|
|
return 0;
|
|
}
|
|
UChar c=msg.charAt(index);
|
|
if(c==u_rightCurlyBrace) {
|
|
// all done
|
|
} else if(c!=u_comma) {
|
|
setParseError(parseError, nameIndex); // Bad argument syntax.
|
|
errorCode=U_PATTERN_SYNTAX_ERROR;
|
|
return 0;
|
|
} else /* ',' */ {
|
|
// parse argument type: case-sensitive a-zA-Z
|
|
int32_t typeIndex=index=skipWhiteSpace(index+1);
|
|
while(index<msg.length() && isArgTypeChar(msg.charAt(index))) {
|
|
++index;
|
|
}
|
|
int32_t length=index-typeIndex;
|
|
index=skipWhiteSpace(index);
|
|
if(index==msg.length()) {
|
|
setParseError(parseError, 0); // Unmatched '{' braces in message.
|
|
errorCode=U_UNMATCHED_BRACES;
|
|
return 0;
|
|
}
|
|
if(length==0 || ((c=msg.charAt(index))!=u_comma && c!=u_rightCurlyBrace)) {
|
|
setParseError(parseError, nameIndex); // Bad argument syntax.
|
|
errorCode=U_PATTERN_SYNTAX_ERROR;
|
|
return 0;
|
|
}
|
|
if(length>Part::MAX_LENGTH) {
|
|
setParseError(parseError, nameIndex); // Argument type name too long.
|
|
errorCode=U_INDEX_OUTOFBOUNDS_ERROR;
|
|
return 0;
|
|
}
|
|
argType=UMSGPAT_ARG_TYPE_SIMPLE;
|
|
if(length==6) {
|
|
// case-insensitive comparisons for complex-type names
|
|
if(isChoice(typeIndex)) {
|
|
argType=UMSGPAT_ARG_TYPE_CHOICE;
|
|
} else if(isPlural(typeIndex)) {
|
|
argType=UMSGPAT_ARG_TYPE_PLURAL;
|
|
} else if(isSelect(typeIndex)) {
|
|
argType=UMSGPAT_ARG_TYPE_SELECT;
|
|
}
|
|
}
|
|
// change the ARG_START type from NONE to argType
|
|
partsList->a[argStart].value=(int16_t)argType;
|
|
if(argType==UMSGPAT_ARG_TYPE_SIMPLE) {
|
|
addPart(UMSGPAT_PART_TYPE_ARG_TYPE, typeIndex, length, 0, errorCode);
|
|
}
|
|
// look for an argument style (pattern)
|
|
if(c==u_rightCurlyBrace) {
|
|
if(argType!=UMSGPAT_ARG_TYPE_SIMPLE) {
|
|
setParseError(parseError, nameIndex); // No style field for complex argument.
|
|
errorCode=U_PATTERN_SYNTAX_ERROR;
|
|
return 0;
|
|
}
|
|
} else /* ',' */ {
|
|
++index;
|
|
if(argType==UMSGPAT_ARG_TYPE_SIMPLE) {
|
|
index=parseSimpleStyle(index, parseError, errorCode);
|
|
} else if(argType==UMSGPAT_ARG_TYPE_CHOICE) {
|
|
index=parseChoiceStyle(index, nestingLevel, parseError, errorCode);
|
|
} else {
|
|
index=parsePluralOrSelectStyle(argType, index, nestingLevel, parseError, errorCode);
|
|
}
|
|
}
|
|
}
|
|
// Argument parsing stopped on the '}'.
|
|
addLimitPart(argStart, UMSGPAT_PART_TYPE_ARG_LIMIT, index, 1, argType, errorCode);
|
|
return index+1;
|
|
}
|
|
|
|
int32_t
|
|
MessagePattern::parseSimpleStyle(int32_t index, UParseError *parseError, UErrorCode &errorCode) {
|
|
if(U_FAILURE(errorCode)) {
|
|
return 0;
|
|
}
|
|
int32_t start=index;
|
|
int32_t nestedBraces=0;
|
|
while(index<msg.length()) {
|
|
UChar c=msg.charAt(index++);
|
|
if(c==u_apos) {
|
|
// Treat apostrophe as quoting but include it in the style part.
|
|
// Find the end of the quoted literal text.
|
|
index=msg.indexOf(u_apos, index);
|
|
if(index<0) {
|
|
// Quoted literal argument style text reaches to the end of the message.
|
|
setParseError(parseError, start);
|
|
errorCode=U_PATTERN_SYNTAX_ERROR;
|
|
return 0;
|
|
}
|
|
// skip the quote-ending apostrophe
|
|
++index;
|
|
} else if(c==u_leftCurlyBrace) {
|
|
++nestedBraces;
|
|
} else if(c==u_rightCurlyBrace) {
|
|
if(nestedBraces>0) {
|
|
--nestedBraces;
|
|
} else {
|
|
int32_t length=--index-start;
|
|
if(length>Part::MAX_LENGTH) {
|
|
setParseError(parseError, start); // Argument style text too long.
|
|
errorCode=U_INDEX_OUTOFBOUNDS_ERROR;
|
|
return 0;
|
|
}
|
|
addPart(UMSGPAT_PART_TYPE_ARG_STYLE, start, length, 0, errorCode);
|
|
return index;
|
|
}
|
|
} // c is part of literal text
|
|
}
|
|
setParseError(parseError, 0); // Unmatched '{' braces in message.
|
|
errorCode=U_UNMATCHED_BRACES;
|
|
return 0;
|
|
}
|
|
|
|
int32_t
|
|
MessagePattern::parseChoiceStyle(int32_t index, int32_t nestingLevel,
|
|
UParseError *parseError, UErrorCode &errorCode) {
|
|
if(U_FAILURE(errorCode)) {
|
|
return 0;
|
|
}
|
|
int32_t start=index;
|
|
index=skipWhiteSpace(index);
|
|
if(index==msg.length() || msg.charAt(index)==u_rightCurlyBrace) {
|
|
setParseError(parseError, 0); // Missing choice argument pattern.
|
|
errorCode=U_PATTERN_SYNTAX_ERROR;
|
|
return 0;
|
|
}
|
|
for(;;) {
|
|
// The choice argument style contains |-separated (number, separator, message) triples.
|
|
// Parse the number.
|
|
int32_t numberIndex=index;
|
|
index=skipDouble(index);
|
|
int32_t length=index-numberIndex;
|
|
if(length==0) {
|
|
setParseError(parseError, start); // Bad choice pattern syntax.
|
|
errorCode=U_PATTERN_SYNTAX_ERROR;
|
|
return 0;
|
|
}
|
|
if(length>Part::MAX_LENGTH) {
|
|
setParseError(parseError, numberIndex); // Choice number too long.
|
|
errorCode=U_INDEX_OUTOFBOUNDS_ERROR;
|
|
return 0;
|
|
}
|
|
parseDouble(numberIndex, index, TRUE, parseError, errorCode); // adds ARG_INT or ARG_DOUBLE
|
|
if(U_FAILURE(errorCode)) {
|
|
return 0;
|
|
}
|
|
// Parse the separator.
|
|
index=skipWhiteSpace(index);
|
|
if(index==msg.length()) {
|
|
setParseError(parseError, start); // Bad choice pattern syntax.
|
|
errorCode=U_PATTERN_SYNTAX_ERROR;
|
|
return 0;
|
|
}
|
|
UChar c=msg.charAt(index);
|
|
if(!(c==u_pound || c==u_lessThan || c==u_lessOrEqual)) { // U+2264 is <=
|
|
setParseError(parseError, start); // Expected choice separator (#<\u2264) instead of c.
|
|
errorCode=U_PATTERN_SYNTAX_ERROR;
|
|
return 0;
|
|
}
|
|
addPart(UMSGPAT_PART_TYPE_ARG_SELECTOR, index, 1, 0, errorCode);
|
|
// Parse the message fragment.
|
|
index=parseMessage(++index, 0, nestingLevel+1, UMSGPAT_ARG_TYPE_CHOICE, parseError, errorCode);
|
|
if(U_FAILURE(errorCode)) {
|
|
return 0;
|
|
}
|
|
// parseMessage(..., CHOICE) returns the index of the terminator, or msg.length().
|
|
if(index==msg.length()) {
|
|
return index;
|
|
}
|
|
if(msg.charAt(index)==u_rightCurlyBrace) {
|
|
if(!inMessageFormatPattern(nestingLevel)) {
|
|
setParseError(parseError, start); // Bad choice pattern syntax.
|
|
errorCode=U_PATTERN_SYNTAX_ERROR;
|
|
return 0;
|
|
}
|
|
return index;
|
|
} // else the terminator is '|'
|
|
index=skipWhiteSpace(index+1);
|
|
}
|
|
}
|
|
|
|
int32_t
|
|
MessagePattern::parsePluralOrSelectStyle(UMessagePatternArgType argType,
|
|
int32_t index, int32_t nestingLevel,
|
|
UParseError *parseError, UErrorCode &errorCode) {
|
|
if(U_FAILURE(errorCode)) {
|
|
return 0;
|
|
}
|
|
int32_t start=index;
|
|
UBool isEmpty=TRUE;
|
|
UBool hasOther=FALSE;
|
|
for(;;) {
|
|
// First, collect the selector looking for a small set of terminators.
|
|
// It would be a little faster to consider the syntax of each possible
|
|
// token right here, but that makes the code too complicated.
|
|
index=skipWhiteSpace(index);
|
|
UBool eos=index==msg.length();
|
|
if(eos || msg.charAt(index)==u_rightCurlyBrace) {
|
|
if(eos==inMessageFormatPattern(nestingLevel)) {
|
|
setParseError(parseError, start); // Bad plural/select pattern syntax.
|
|
errorCode=U_PATTERN_SYNTAX_ERROR;
|
|
return 0;
|
|
}
|
|
if(!hasOther) {
|
|
setParseError(parseError, 0); // Missing 'other' keyword in plural/select pattern.
|
|
errorCode=U_DEFAULT_KEYWORD_MISSING;
|
|
return 0;
|
|
}
|
|
return index;
|
|
}
|
|
int32_t selectorIndex=index;
|
|
if(argType==UMSGPAT_ARG_TYPE_PLURAL && msg.charAt(selectorIndex)==u_equal) {
|
|
// explicit-value plural selector: =double
|
|
index=skipDouble(index+1);
|
|
int32_t length=index-selectorIndex;
|
|
if(length==1) {
|
|
setParseError(parseError, start); // Bad plural/select pattern syntax.
|
|
errorCode=U_PATTERN_SYNTAX_ERROR;
|
|
return 0;
|
|
}
|
|
if(length>Part::MAX_LENGTH) {
|
|
setParseError(parseError, selectorIndex); // Argument selector too long.
|
|
errorCode=U_INDEX_OUTOFBOUNDS_ERROR;
|
|
return 0;
|
|
}
|
|
addPart(UMSGPAT_PART_TYPE_ARG_SELECTOR, selectorIndex, length, 0, errorCode);
|
|
parseDouble(selectorIndex+1, index, FALSE,
|
|
parseError, errorCode); // adds ARG_INT or ARG_DOUBLE
|
|
} else {
|
|
index=skipIdentifier(index);
|
|
int32_t length=index-selectorIndex;
|
|
if(length==0) {
|
|
setParseError(parseError, start); // Bad plural/select pattern syntax.
|
|
errorCode=U_PATTERN_SYNTAX_ERROR;
|
|
return 0;
|
|
}
|
|
// Note: The ':' in "offset:" is just beyond the skipIdentifier() range.
|
|
if( argType==UMSGPAT_ARG_TYPE_PLURAL && length==6 && index<msg.length() &&
|
|
0==msg.compare(selectorIndex, 7, kOffsetColon, 0, 7)
|
|
) {
|
|
// plural offset, not a selector
|
|
if(!isEmpty) {
|
|
// Plural argument 'offset:' (if present) must precede key-message pairs.
|
|
setParseError(parseError, start);
|
|
errorCode=U_PATTERN_SYNTAX_ERROR;
|
|
return 0;
|
|
}
|
|
// allow whitespace between offset: and its value
|
|
int32_t valueIndex=skipWhiteSpace(index+1); // The ':' is at index.
|
|
index=skipDouble(valueIndex);
|
|
if(index==valueIndex) {
|
|
setParseError(parseError, start); // Missing value for plural 'offset:'.
|
|
errorCode=U_PATTERN_SYNTAX_ERROR;
|
|
return 0;
|
|
}
|
|
if((index-valueIndex)>Part::MAX_LENGTH) {
|
|
setParseError(parseError, valueIndex); // Plural offset value too long.
|
|
errorCode=U_INDEX_OUTOFBOUNDS_ERROR;
|
|
return 0;
|
|
}
|
|
parseDouble(valueIndex, index, FALSE,
|
|
parseError, errorCode); // adds ARG_INT or ARG_DOUBLE
|
|
if(U_FAILURE(errorCode)) {
|
|
return 0;
|
|
}
|
|
isEmpty=FALSE;
|
|
continue; // no message fragment after the offset
|
|
} else {
|
|
// normal selector word
|
|
if(length>Part::MAX_LENGTH) {
|
|
setParseError(parseError, selectorIndex); // Argument selector too long.
|
|
errorCode=U_INDEX_OUTOFBOUNDS_ERROR;
|
|
return 0;
|
|
}
|
|
addPart(UMSGPAT_PART_TYPE_ARG_SELECTOR, selectorIndex, length, 0, errorCode);
|
|
if(0==msg.compare(selectorIndex, length, kOther, 0, 5)) {
|
|
hasOther=TRUE;
|
|
}
|
|
}
|
|
}
|
|
if(U_FAILURE(errorCode)) {
|
|
return 0;
|
|
}
|
|
|
|
// parse the message fragment following the selector
|
|
index=skipWhiteSpace(index);
|
|
if(index==msg.length() || msg.charAt(index)!=u_leftCurlyBrace) {
|
|
setParseError(parseError, selectorIndex); // No message fragment after plural/select selector.
|
|
errorCode=U_PATTERN_SYNTAX_ERROR;
|
|
return 0;
|
|
}
|
|
index=parseMessage(index, 1, nestingLevel+1, argType, parseError, errorCode);
|
|
if(U_FAILURE(errorCode)) {
|
|
return 0;
|
|
}
|
|
isEmpty=FALSE;
|
|
}
|
|
}
|
|
|
|
int32_t
|
|
MessagePattern::parseArgNumber(const UnicodeString &s, int32_t start, int32_t limit) {
|
|
// If the identifier contains only ASCII digits, then it is an argument _number_
|
|
// and must not have leading zeros (except "0" itself).
|
|
// Otherwise it is an argument _name_.
|
|
if(start>=limit) {
|
|
return UMSGPAT_ARG_NAME_NOT_VALID;
|
|
}
|
|
int32_t number;
|
|
// Defer numeric errors until we know there are only digits.
|
|
UBool badNumber;
|
|
UChar c=s.charAt(start++);
|
|
if(c==0x30) {
|
|
if(start==limit) {
|
|
return 0;
|
|
} else {
|
|
number=0;
|
|
badNumber=TRUE; // leading zero
|
|
}
|
|
} else if(0x31<=c && c<=0x39) {
|
|
number=c-0x30;
|
|
badNumber=FALSE;
|
|
} else {
|
|
return UMSGPAT_ARG_NAME_NOT_NUMBER;
|
|
}
|
|
while(start<limit) {
|
|
c=s.charAt(start++);
|
|
if(0x30<=c && c<=0x39) {
|
|
if(number>=INT32_MAX/10) {
|
|
badNumber=TRUE; // overflow
|
|
}
|
|
number=number*10+(c-0x30);
|
|
} else {
|
|
return UMSGPAT_ARG_NAME_NOT_NUMBER;
|
|
}
|
|
}
|
|
// There are only ASCII digits.
|
|
if(badNumber) {
|
|
return UMSGPAT_ARG_NAME_NOT_VALID;
|
|
} else {
|
|
return number;
|
|
}
|
|
}
|
|
|
|
void
|
|
MessagePattern::parseDouble(int32_t start, int32_t limit, UBool allowInfinity,
|
|
UParseError *parseError, UErrorCode &errorCode) {
|
|
if(U_FAILURE(errorCode)) {
|
|
return;
|
|
}
|
|
U_ASSERT(start<limit);
|
|
// fake loop for easy exit and single throw statement
|
|
for(;;) {
|
|
// fast path for small integers and infinity
|
|
int32_t value=0;
|
|
int32_t isNegative=0; // not boolean so that we can easily add it to value
|
|
int32_t index=start;
|
|
UChar c=msg.charAt(index++);
|
|
if(c==u_minus) {
|
|
isNegative=1;
|
|
if(index==limit) {
|
|
break; // no number
|
|
}
|
|
c=msg.charAt(index++);
|
|
} else if(c==u_plus) {
|
|
if(index==limit) {
|
|
break; // no number
|
|
}
|
|
c=msg.charAt(index++);
|
|
}
|
|
if(c==0x221e) { // infinity
|
|
if(allowInfinity && index==limit) {
|
|
double infinity=uprv_getInfinity();
|
|
addArgDoublePart(
|
|
isNegative!=0 ? -infinity : infinity,
|
|
start, limit-start, errorCode);
|
|
return;
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
// try to parse the number as a small integer but fall back to a double
|
|
while('0'<=c && c<='9') {
|
|
value=value*10+(c-'0');
|
|
if(value>(Part::MAX_VALUE+isNegative)) {
|
|
break; // not a small-enough integer
|
|
}
|
|
if(index==limit) {
|
|
addPart(UMSGPAT_PART_TYPE_ARG_INT, start, limit-start,
|
|
isNegative!=0 ? -value : value, errorCode);
|
|
return;
|
|
}
|
|
c=msg.charAt(index++);
|
|
}
|
|
// Let Double.parseDouble() throw a NumberFormatException.
|
|
char numberChars[128];
|
|
int32_t capacity=(int32_t)sizeof(numberChars);
|
|
int32_t length=limit-start;
|
|
if(length>=capacity) {
|
|
break; // number too long
|
|
}
|
|
msg.extract(start, length, numberChars, capacity, US_INV);
|
|
if((int32_t)uprv_strlen(numberChars)<length) {
|
|
break; // contains non-invariant character that was turned into NUL
|
|
}
|
|
char *end;
|
|
double numericValue=uprv_strtod(numberChars, &end);
|
|
if(end!=(numberChars+length)) {
|
|
break; // parsing error
|
|
}
|
|
addArgDoublePart(numericValue, start, length, errorCode);
|
|
return;
|
|
}
|
|
setParseError(parseError, start /*, limit*/); // Bad syntax for numeric value.
|
|
errorCode=U_PATTERN_SYNTAX_ERROR;
|
|
return;
|
|
}
|
|
|
|
int32_t
|
|
MessagePattern::skipWhiteSpace(int32_t index) {
|
|
const UChar *s=msg.getBuffer();
|
|
int32_t msgLength=msg.length();
|
|
const UChar *t=PatternProps::skipWhiteSpace(s+index, msgLength-index);
|
|
return (int32_t)(t-s);
|
|
}
|
|
|
|
int32_t
|
|
MessagePattern::skipIdentifier(int32_t index) {
|
|
const UChar *s=msg.getBuffer();
|
|
int32_t msgLength=msg.length();
|
|
const UChar *t=PatternProps::skipIdentifier(s+index, msgLength-index);
|
|
return (int32_t)(t-s);
|
|
}
|
|
|
|
int32_t
|
|
MessagePattern::skipDouble(int32_t index) {
|
|
int32_t msgLength=msg.length();
|
|
while(index<msgLength) {
|
|
UChar c=msg.charAt(index);
|
|
// U+221E: Allow the infinity symbol, for ChoiceFormat patterns.
|
|
if((c<0x30 && c!=u_plus && c!=u_minus && c!=u_dot) || (c>0x39 && c!=u_e && c!=u_E && c!=0x221e)) {
|
|
break;
|
|
}
|
|
++index;
|
|
}
|
|
return index;
|
|
}
|
|
|
|
UBool
|
|
MessagePattern::isArgTypeChar(UChar32 c) {
|
|
return (u_a<=c && c<=u_z) || (u_A<=c && c<=u_Z);
|
|
}
|
|
|
|
UBool
|
|
MessagePattern::isChoice(int32_t index) {
|
|
UChar c;
|
|
return
|
|
((c=msg.charAt(index++))==u_c || c==u_C) &&
|
|
((c=msg.charAt(index++))==u_h || c==u_H) &&
|
|
((c=msg.charAt(index++))==u_o || c==u_O) &&
|
|
((c=msg.charAt(index++))==u_i || c==u_I) &&
|
|
((c=msg.charAt(index++))==u_c || c==u_C) &&
|
|
((c=msg.charAt(index))==u_e || c==u_E);
|
|
}
|
|
|
|
UBool
|
|
MessagePattern::isPlural(int32_t index) {
|
|
UChar c;
|
|
return
|
|
((c=msg.charAt(index++))==u_p || c==u_P) &&
|
|
((c=msg.charAt(index++))==u_l || c==u_L) &&
|
|
((c=msg.charAt(index++))==u_u || c==u_U) &&
|
|
((c=msg.charAt(index++))==u_r || c==u_R) &&
|
|
((c=msg.charAt(index++))==u_a || c==u_A) &&
|
|
((c=msg.charAt(index))==u_l || c==u_L);
|
|
}
|
|
|
|
UBool
|
|
MessagePattern::isSelect(int32_t index) {
|
|
UChar c;
|
|
return
|
|
((c=msg.charAt(index++))==u_s || c==u_S) &&
|
|
((c=msg.charAt(index++))==u_e || c==u_E) &&
|
|
((c=msg.charAt(index++))==u_l || c==u_L) &&
|
|
((c=msg.charAt(index++))==u_e || c==u_E) &&
|
|
((c=msg.charAt(index++))==u_c || c==u_C) &&
|
|
((c=msg.charAt(index))==u_t || c==u_T);
|
|
}
|
|
|
|
UBool
|
|
MessagePattern::inMessageFormatPattern(int32_t nestingLevel) {
|
|
return nestingLevel>0 || partsList->a[0].type==UMSGPAT_PART_TYPE_MSG_START;
|
|
}
|
|
|
|
UBool
|
|
MessagePattern::inTopLevelChoiceMessage(int32_t nestingLevel, UMessagePatternArgType parentType) {
|
|
return
|
|
nestingLevel==1 &&
|
|
parentType==UMSGPAT_ARG_TYPE_CHOICE &&
|
|
partsList->a[0].type!=UMSGPAT_PART_TYPE_MSG_START;
|
|
}
|
|
|
|
void
|
|
MessagePattern::addPart(UMessagePatternPartType type, int32_t index, int32_t length,
|
|
int32_t value, UErrorCode &errorCode) {
|
|
if(partsList->ensureCapacityForOneMore(partsLength, errorCode)) {
|
|
Part &part=partsList->a[partsLength++];
|
|
part.type=type;
|
|
part.index=index;
|
|
part.length=(uint16_t)length;
|
|
part.value=(int16_t)value;
|
|
part.limitPartIndex=0;
|
|
}
|
|
}
|
|
|
|
void
|
|
MessagePattern::addLimitPart(int32_t start,
|
|
UMessagePatternPartType type, int32_t index, int32_t length,
|
|
int32_t value, UErrorCode &errorCode) {
|
|
partsList->a[start].limitPartIndex=partsLength;
|
|
addPart(type, index, length, value, errorCode);
|
|
}
|
|
|
|
void
|
|
MessagePattern::addArgDoublePart(double numericValue, int32_t start, int32_t length,
|
|
UErrorCode &errorCode) {
|
|
if(U_FAILURE(errorCode)) {
|
|
return;
|
|
}
|
|
int32_t numericIndex=numericValuesLength;
|
|
if(numericValuesList==NULL) {
|
|
numericValuesList=new MessagePatternDoubleList();
|
|
if(numericValuesList==NULL) {
|
|
errorCode=U_MEMORY_ALLOCATION_ERROR;
|
|
return;
|
|
}
|
|
} else if(!numericValuesList->ensureCapacityForOneMore(numericValuesLength, errorCode)) {
|
|
return;
|
|
} else {
|
|
if(numericIndex>Part::MAX_VALUE) {
|
|
errorCode=U_INDEX_OUTOFBOUNDS_ERROR;
|
|
return;
|
|
}
|
|
}
|
|
numericValuesList->a[numericValuesLength++]=numericValue;
|
|
addPart(UMSGPAT_PART_TYPE_ARG_DOUBLE, start, length, numericIndex, errorCode);
|
|
}
|
|
|
|
void
|
|
MessagePattern::setParseError(UParseError *parseError, int32_t index) {
|
|
if(parseError==NULL) {
|
|
return;
|
|
}
|
|
parseError->offset=index;
|
|
|
|
// Set preContext to some of msg before index.
|
|
// Avoid splitting a surrogate pair.
|
|
int32_t length=index;
|
|
if(length>=U_PARSE_CONTEXT_LEN) {
|
|
length=U_PARSE_CONTEXT_LEN-1;
|
|
if(length>0 && U16_IS_TRAIL(msg[index-length])) {
|
|
--length;
|
|
}
|
|
}
|
|
msg.extract(index-length, length, parseError->preContext);
|
|
parseError->preContext[length]=0;
|
|
|
|
// Set postContext to some of msg starting at index.
|
|
length=msg.length()-index;
|
|
if(length>=U_PARSE_CONTEXT_LEN) {
|
|
length=U_PARSE_CONTEXT_LEN-1;
|
|
if(length>0 && U16_IS_LEAD(msg[index+length-1])) {
|
|
--length;
|
|
}
|
|
}
|
|
msg.extract(index, length, parseError->postContext);
|
|
parseError->postContext[length]=0;
|
|
}
|
|
|
|
UOBJECT_DEFINE_NO_RTTI_IMPLEMENTATION(MessagePattern)
|
|
|
|
// MessageImpl ------------------------------------------------------------- ***
|
|
|
|
void
|
|
MessageImpl::appendReducedApostrophes(const UnicodeString &s, int32_t start, int32_t limit,
|
|
UnicodeString &sb) {
|
|
int32_t doubleApos=-1;
|
|
for(;;) {
|
|
int32_t i=s.indexOf(u_apos, start);
|
|
if(i<0 || i>=limit) {
|
|
sb.append(s, start, limit-start);
|
|
break;
|
|
}
|
|
if(i==doubleApos) {
|
|
// Double apostrophe at start-1 and start==i, append one.
|
|
sb.append(u_apos);
|
|
++start;
|
|
doubleApos=-1;
|
|
} else {
|
|
// Append text between apostrophes and skip this one.
|
|
sb.append(s, start, i-start);
|
|
doubleApos=start=i+1;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Ported from second half of ICU4J SelectFormat.format(String).
|
|
UnicodeString &
|
|
MessageImpl::appendSubMessageWithoutSkipSyntax(const MessagePattern &msgPattern,
|
|
int32_t msgStart,
|
|
UnicodeString &result) {
|
|
const UnicodeString &msgString=msgPattern.getPatternString();
|
|
int32_t prevIndex=msgPattern.getPart(msgStart).getLimit();
|
|
for(int32_t i=msgStart;;) {
|
|
const MessagePattern::Part &part=msgPattern.getPart(++i);
|
|
UMessagePatternPartType type=part.getType();
|
|
int32_t index=part.getIndex();
|
|
if(type==UMSGPAT_PART_TYPE_MSG_LIMIT) {
|
|
return result.append(msgString, prevIndex, index-prevIndex);
|
|
} else if(type==UMSGPAT_PART_TYPE_SKIP_SYNTAX) {
|
|
result.append(msgString, prevIndex, index-prevIndex);
|
|
prevIndex=part.getLimit();
|
|
} else if(type==UMSGPAT_PART_TYPE_ARG_START) {
|
|
result.append(msgString, prevIndex, index-prevIndex);
|
|
prevIndex=index;
|
|
i=msgPattern.getLimitPartIndex(i);
|
|
index=msgPattern.getPart(i).getLimit();
|
|
appendReducedApostrophes(msgString, prevIndex, index, result);
|
|
prevIndex=index;
|
|
}
|
|
}
|
|
}
|
|
|
|
U_NAMESPACE_END
|
|
|
|
#endif // !UCONFIG_NO_FORMATTING
|