281 lines
9.7 KiB
C++
281 lines
9.7 KiB
C++
/*
|
|
*******************************************************************************
|
|
*
|
|
* Copyright (C) 2011, International Business Machines
|
|
* Corporation and others. All Rights Reserved.
|
|
*
|
|
*******************************************************************************
|
|
* file name: uniset_closure.cpp
|
|
* encoding: US-ASCII
|
|
* tab size: 8 (not used)
|
|
* indentation:4
|
|
*
|
|
* created on: 2011may30
|
|
* created by: Markus W. Scherer
|
|
*
|
|
* UnicodeSet::closeOver() and related methods moved here from uniset_props.cpp
|
|
* to simplify dependencies.
|
|
* In particular, this depends on the BreakIterator, but the BreakIterator
|
|
* code also builds UnicodeSets from patterns and needs uniset_props.
|
|
*/
|
|
|
|
#include "unicode/brkiter.h"
|
|
#include "unicode/locid.h"
|
|
#include "unicode/parsepos.h"
|
|
#include "unicode/uniset.h"
|
|
#include "cmemory.h"
|
|
#include "ruleiter.h"
|
|
#include "ucase.h"
|
|
#include "util.h"
|
|
#include "uvector.h"
|
|
|
|
// initial storage. Must be >= 0
|
|
// *** same as in uniset.cpp ! ***
|
|
#define START_EXTRA 16
|
|
|
|
U_NAMESPACE_BEGIN
|
|
|
|
// TODO memory debugging provided inside uniset.cpp
|
|
// could be made available here but probably obsolete with use of modern
|
|
// memory leak checker tools
|
|
#define _dbgct(me)
|
|
|
|
//----------------------------------------------------------------
|
|
// Constructors &c
|
|
//----------------------------------------------------------------
|
|
|
|
UnicodeSet::UnicodeSet(const UnicodeString& pattern,
|
|
uint32_t options,
|
|
const SymbolTable* symbols,
|
|
UErrorCode& status) :
|
|
len(0), capacity(START_EXTRA), list(0), bmpSet(0), buffer(0),
|
|
bufferCapacity(0), patLen(0), pat(NULL), strings(NULL), stringSpan(NULL),
|
|
fFlags(0)
|
|
{
|
|
if(U_SUCCESS(status)){
|
|
list = (UChar32*) uprv_malloc(sizeof(UChar32) * capacity);
|
|
/* test for NULL */
|
|
if(list == NULL) {
|
|
status = U_MEMORY_ALLOCATION_ERROR;
|
|
}else{
|
|
allocateStrings(status);
|
|
applyPattern(pattern, options, symbols, status);
|
|
}
|
|
}
|
|
_dbgct(this);
|
|
}
|
|
|
|
UnicodeSet::UnicodeSet(const UnicodeString& pattern, ParsePosition& pos,
|
|
uint32_t options,
|
|
const SymbolTable* symbols,
|
|
UErrorCode& status) :
|
|
len(0), capacity(START_EXTRA), list(0), bmpSet(0), buffer(0),
|
|
bufferCapacity(0), patLen(0), pat(NULL), strings(NULL), stringSpan(NULL),
|
|
fFlags(0)
|
|
{
|
|
if(U_SUCCESS(status)){
|
|
list = (UChar32*) uprv_malloc(sizeof(UChar32) * capacity);
|
|
/* test for NULL */
|
|
if(list == NULL) {
|
|
status = U_MEMORY_ALLOCATION_ERROR;
|
|
}else{
|
|
allocateStrings(status);
|
|
applyPattern(pattern, pos, options, symbols, status);
|
|
}
|
|
}
|
|
_dbgct(this);
|
|
}
|
|
|
|
//----------------------------------------------------------------
|
|
// Public API
|
|
//----------------------------------------------------------------
|
|
|
|
UnicodeSet& UnicodeSet::applyPattern(const UnicodeString& pattern,
|
|
uint32_t options,
|
|
const SymbolTable* symbols,
|
|
UErrorCode& status) {
|
|
ParsePosition pos(0);
|
|
applyPattern(pattern, pos, options, symbols, status);
|
|
if (U_FAILURE(status)) return *this;
|
|
|
|
int32_t i = pos.getIndex();
|
|
|
|
if (options & USET_IGNORE_SPACE) {
|
|
// Skip over trailing whitespace
|
|
ICU_Utility::skipWhitespace(pattern, i, TRUE);
|
|
}
|
|
|
|
if (i != pattern.length()) {
|
|
status = U_ILLEGAL_ARGUMENT_ERROR;
|
|
}
|
|
return *this;
|
|
}
|
|
|
|
UnicodeSet& UnicodeSet::applyPattern(const UnicodeString& pattern,
|
|
ParsePosition& pos,
|
|
uint32_t options,
|
|
const SymbolTable* symbols,
|
|
UErrorCode& status) {
|
|
if (U_FAILURE(status)) {
|
|
return *this;
|
|
}
|
|
if (isFrozen()) {
|
|
status = U_NO_WRITE_PERMISSION;
|
|
return *this;
|
|
}
|
|
// Need to build the pattern in a temporary string because
|
|
// _applyPattern calls add() etc., which set pat to empty.
|
|
UnicodeString rebuiltPat;
|
|
RuleCharacterIterator chars(pattern, symbols, pos);
|
|
applyPattern(chars, symbols, rebuiltPat, options, &UnicodeSet::closeOver, status);
|
|
if (U_FAILURE(status)) return *this;
|
|
if (chars.inVariable()) {
|
|
// syntaxError(chars, "Extra chars in variable value");
|
|
status = U_MALFORMED_SET;
|
|
return *this;
|
|
}
|
|
setPattern(rebuiltPat);
|
|
return *this;
|
|
}
|
|
|
|
// USetAdder implementation
|
|
// Does not use uset.h to reduce code dependencies
|
|
static void U_CALLCONV
|
|
_set_add(USet *set, UChar32 c) {
|
|
((UnicodeSet *)set)->add(c);
|
|
}
|
|
|
|
static void U_CALLCONV
|
|
_set_addRange(USet *set, UChar32 start, UChar32 end) {
|
|
((UnicodeSet *)set)->add(start, end);
|
|
}
|
|
|
|
static void U_CALLCONV
|
|
_set_addString(USet *set, const UChar *str, int32_t length) {
|
|
((UnicodeSet *)set)->add(UnicodeString((UBool)(length<0), str, length));
|
|
}
|
|
|
|
//----------------------------------------------------------------
|
|
// Case folding API
|
|
//----------------------------------------------------------------
|
|
|
|
// add the result of a full case mapping to the set
|
|
// use str as a temporary string to avoid constructing one
|
|
static inline void
|
|
addCaseMapping(UnicodeSet &set, int32_t result, const UChar *full, UnicodeString &str) {
|
|
if(result >= 0) {
|
|
if(result > UCASE_MAX_STRING_LENGTH) {
|
|
// add a single-code point case mapping
|
|
set.add(result);
|
|
} else {
|
|
// add a string case mapping from full with length result
|
|
str.setTo((UBool)FALSE, full, result);
|
|
set.add(str);
|
|
}
|
|
}
|
|
// result < 0: the code point mapped to itself, no need to add it
|
|
// see ucase.h
|
|
}
|
|
|
|
UnicodeSet& UnicodeSet::closeOver(int32_t attribute) {
|
|
if (isFrozen() || isBogus()) {
|
|
return *this;
|
|
}
|
|
if (attribute & (USET_CASE_INSENSITIVE | USET_ADD_CASE_MAPPINGS)) {
|
|
const UCaseProps *csp = ucase_getSingleton();
|
|
{
|
|
UnicodeSet foldSet(*this);
|
|
UnicodeString str;
|
|
USetAdder sa = {
|
|
foldSet.toUSet(),
|
|
_set_add,
|
|
_set_addRange,
|
|
_set_addString,
|
|
NULL, // don't need remove()
|
|
NULL // don't need removeRange()
|
|
};
|
|
|
|
// start with input set to guarantee inclusion
|
|
// USET_CASE: remove strings because the strings will actually be reduced (folded);
|
|
// therefore, start with no strings and add only those needed
|
|
if (attribute & USET_CASE_INSENSITIVE) {
|
|
foldSet.strings->removeAllElements();
|
|
}
|
|
|
|
int32_t n = getRangeCount();
|
|
UChar32 result;
|
|
const UChar *full;
|
|
int32_t locCache = 0;
|
|
|
|
for (int32_t i=0; i<n; ++i) {
|
|
UChar32 start = getRangeStart(i);
|
|
UChar32 end = getRangeEnd(i);
|
|
|
|
if (attribute & USET_CASE_INSENSITIVE) {
|
|
// full case closure
|
|
for (UChar32 cp=start; cp<=end; ++cp) {
|
|
ucase_addCaseClosure(csp, cp, &sa);
|
|
}
|
|
} else {
|
|
// add case mappings
|
|
// (does not add long s for regular s, or Kelvin for k, for example)
|
|
for (UChar32 cp=start; cp<=end; ++cp) {
|
|
result = ucase_toFullLower(csp, cp, NULL, NULL, &full, "", &locCache);
|
|
addCaseMapping(foldSet, result, full, str);
|
|
|
|
result = ucase_toFullTitle(csp, cp, NULL, NULL, &full, "", &locCache);
|
|
addCaseMapping(foldSet, result, full, str);
|
|
|
|
result = ucase_toFullUpper(csp, cp, NULL, NULL, &full, "", &locCache);
|
|
addCaseMapping(foldSet, result, full, str);
|
|
|
|
result = ucase_toFullFolding(csp, cp, &full, 0);
|
|
addCaseMapping(foldSet, result, full, str);
|
|
}
|
|
}
|
|
}
|
|
if (strings != NULL && strings->size() > 0) {
|
|
if (attribute & USET_CASE_INSENSITIVE) {
|
|
for (int32_t j=0; j<strings->size(); ++j) {
|
|
str = *(const UnicodeString *) strings->elementAt(j);
|
|
str.foldCase();
|
|
if(!ucase_addStringCaseClosure(csp, str.getBuffer(), str.length(), &sa)) {
|
|
foldSet.add(str); // does not map to code points: add the folded string itself
|
|
}
|
|
}
|
|
} else {
|
|
Locale root("");
|
|
#if !UCONFIG_NO_BREAK_ITERATION
|
|
UErrorCode status = U_ZERO_ERROR;
|
|
BreakIterator *bi = BreakIterator::createWordInstance(root, status);
|
|
if (U_SUCCESS(status)) {
|
|
#endif
|
|
const UnicodeString *pStr;
|
|
|
|
for (int32_t j=0; j<strings->size(); ++j) {
|
|
pStr = (const UnicodeString *) strings->elementAt(j);
|
|
(str = *pStr).toLower(root);
|
|
foldSet.add(str);
|
|
#if !UCONFIG_NO_BREAK_ITERATION
|
|
(str = *pStr).toTitle(bi, root);
|
|
foldSet.add(str);
|
|
#endif
|
|
(str = *pStr).toUpper(root);
|
|
foldSet.add(str);
|
|
(str = *pStr).foldCase();
|
|
foldSet.add(str);
|
|
}
|
|
#if !UCONFIG_NO_BREAK_ITERATION
|
|
}
|
|
delete bi;
|
|
#endif
|
|
}
|
|
}
|
|
*this = foldSet;
|
|
}
|
|
}
|
|
return *this;
|
|
}
|
|
|
|
U_NAMESPACE_END
|