128 lines
4.4 KiB
C++
128 lines
4.4 KiB
C++
// © 2018 and later: Unicode, Inc. and others.
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// License & terms of use: http://www.unicode.org/copyright.html
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#include "unicode/utypes.h"
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#if !UCONFIG_NO_FORMATTING && !UPRV_INCOMPLETE_CPP11_SUPPORT
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// Allow implicit conversion from char16_t* to UnicodeString for this file:
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// Helpful in toString methods and elsewhere.
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#define UNISTR_FROM_STRING_EXPLICIT
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#include "numparse_unisets.h"
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#include "numparse_types.h"
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#include "umutex.h"
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#include "ucln_in.h"
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#include "unicode/uniset.h"
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using namespace icu;
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using namespace icu::numparse;
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using namespace icu::numparse::impl;
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using namespace icu::numparse::impl::unisets;
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namespace {
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static UnicodeSet* gUnicodeSets[COUNT] = {};
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UnicodeSet* computeUnion(Key k1, Key k2) {
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UnicodeSet* result = new UnicodeSet();
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if (result == nullptr) {
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return nullptr;
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}
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result->addAll(*gUnicodeSets[k1]);
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result->addAll(*gUnicodeSets[k2]);
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result->freeze();
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return result;
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}
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UnicodeSet* computeUnion(Key k1, Key k2, Key k3) {
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UnicodeSet* result = new UnicodeSet();
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if (result == nullptr) {
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return nullptr;
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}
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result->addAll(*gUnicodeSets[k1]);
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result->addAll(*gUnicodeSets[k2]);
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result->addAll(*gUnicodeSets[k3]);
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result->freeze();
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return result;
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}
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icu::UInitOnce gNumberParseUniSetsInitOnce = U_INITONCE_INITIALIZER;
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UBool U_CALLCONV cleanupNumberParseUniSets() {
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for (int32_t i = 0; i < COUNT; i++) {
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delete gUnicodeSets[i];
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gUnicodeSets[i] = nullptr;
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}
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return TRUE;
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}
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void U_CALLCONV initNumberParseUniSets(UErrorCode& status) {
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ucln_i18n_registerCleanup(UCLN_I18N_NUMPARSE_UNISETS, cleanupNumberParseUniSets);
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gUnicodeSets[EMPTY] = new UnicodeSet();
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// These characters are skipped over and ignored at any point in the string, even in strict mode.
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// See ticket #13084.
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gUnicodeSets[BIDI] = new UnicodeSet(u"[[:DI:]]", status);
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// This set was decided after discussion with icu-design@. See ticket #13309.
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// Zs+TAB is "horizontal whitespace" according to UTS #18 (blank property).
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gUnicodeSets[WHITESPACE] = new UnicodeSet(u"[[:Zs:][\\u0009]]", status);
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gUnicodeSets[DEFAULT_IGNORABLES] = computeUnion(BIDI, WHITESPACE);
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gUnicodeSets[STRICT_IGNORABLES] = new UnicodeSet(*gUnicodeSets[BIDI]);
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// TODO: Re-generate these sets from the UCD. They probably haven't been updated in a while.
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gUnicodeSets[COMMA] = new UnicodeSet(u"[,،٫、︐︑﹐﹑，､]", status);
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gUnicodeSets[STRICT_COMMA] = new UnicodeSet(u"[,٫︐﹐，]", status);
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gUnicodeSets[PERIOD] = new UnicodeSet(u"[.․。︒﹒．｡]", status);
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gUnicodeSets[STRICT_PERIOD] = new UnicodeSet(u"[.․﹒．｡]", status);
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gUnicodeSets[OTHER_GROUPING_SEPARATORS] = new UnicodeSet(
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u"['٬‘’＇\\u0020\\u00A0\\u2000-\\u200A\\u202F\\u205F\\u3000]", status);
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gUnicodeSets[ALL_SEPARATORS] = computeUnion(COMMA, PERIOD, OTHER_GROUPING_SEPARATORS);
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gUnicodeSets[STRICT_ALL_SEPARATORS] = computeUnion(
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STRICT_COMMA, STRICT_PERIOD, OTHER_GROUPING_SEPARATORS);
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gUnicodeSets[MINUS_SIGN] = new UnicodeSet(u"[-⁻₋−➖﹣－]", status);
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gUnicodeSets[PLUS_SIGN] = new UnicodeSet(u"[+⁺₊➕﬩﹢＋]", status);
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gUnicodeSets[PERCENT_SIGN] = new UnicodeSet(u"[%٪]", status);
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gUnicodeSets[PERMILLE_SIGN] = new UnicodeSet(u"[‰؉]", status);
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gUnicodeSets[INFINITY_KEY] = new UnicodeSet(u"[∞]", status);
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gUnicodeSets[DIGITS] = new UnicodeSet(u"[:digit:]", status);
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gUnicodeSets[CWCF] = new UnicodeSet(u"[:CWCF:]", status);
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gUnicodeSets[DIGITS_OR_ALL_SEPARATORS] = computeUnion(DIGITS, ALL_SEPARATORS);
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gUnicodeSets[DIGITS_OR_STRICT_ALL_SEPARATORS] = computeUnion(DIGITS, STRICT_ALL_SEPARATORS);
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for (int32_t i = 0; i < COUNT; i++) {
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gUnicodeSets[i]->freeze();
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}
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}
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}
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const UnicodeSet* unisets::get(Key key) {
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UErrorCode localStatus = U_ZERO_ERROR;
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umtx_initOnce(gNumberParseUniSetsInitOnce, &initNumberParseUniSets, localStatus);
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if (U_FAILURE(localStatus)) {
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// TODO: This returns non-null in Java, and callers assume that.
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return nullptr;
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}
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return gUnicodeSets[key];
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}
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Key unisets::chooseFrom(UnicodeString str, Key key1) {
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return get(key1)->contains(str) ? key1 : COUNT;
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}
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Key unisets::chooseFrom(UnicodeString str, Key key1, Key key2) {
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return get(key1)->contains(str) ? key1 : chooseFrom(str, key2);
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}
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#endif /* #if !UCONFIG_NO_FORMATTING */
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