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// © 2019 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
// lsr.cpp
// created: 2019may08 Markus W. Scherer
#include "unicode/utypes.h"
#include "charstr.h"
#include "cmemory.h"
#include "cstring.h"
#include "lsr.h"
#include "uinvchar.h"
#include "ustr_imp.h"
U_NAMESPACE_BEGIN
LSR::LSR(char prefix, const char *lang, const char *scr, const char *r, int32_t f,
UErrorCode &errorCode) :
language(nullptr), script(nullptr), region(r),
regionIndex(indexForRegion(region)), flags(f) {
if (U_SUCCESS(errorCode)) {
CharString langScript;
langScript.append(prefix, errorCode).append(lang, errorCode).append('\0', errorCode);
int32_t scriptOffset = langScript.length();
langScript.append(prefix, errorCode).append(scr, errorCode);
owned = langScript.cloneData(errorCode);
if (U_SUCCESS(errorCode)) {
language = owned;
script = owned + scriptOffset;
}
}
}
LSR::LSR(StringPiece lang, StringPiece scr, StringPiece r, int32_t f,
UErrorCode &errorCode) :
language(nullptr), script(nullptr), region(nullptr),
regionIndex(indexForRegion(r.data())), flags(f) {
if (U_SUCCESS(errorCode)) {
CharString data;
data.append(lang, errorCode).append('\0', errorCode);
int32_t scriptOffset = data.length();
data.append(scr, errorCode).append('\0', errorCode);
int32_t regionOffset = data.length();
data.append(r, errorCode);
owned = data.cloneData(errorCode);
if (U_SUCCESS(errorCode)) {
language = owned;
script = owned + scriptOffset;
region = owned + regionOffset;
}
}
}
LSR::LSR(LSR &&other) noexcept :
language(other.language), script(other.script), region(other.region), owned(other.owned),
regionIndex(other.regionIndex), flags(other.flags),
hashCode(other.hashCode) {
if (owned != nullptr) {
other.language = other.script = "";
other.owned = nullptr;
other.hashCode = 0;
}
}
void LSR::deleteOwned() {
uprv_free(owned);
}
LSR &LSR::operator=(LSR &&other) noexcept {
this->~LSR();
language = other.language;
script = other.script;
region = other.region;
regionIndex = other.regionIndex;
flags = other.flags;
owned = other.owned;
hashCode = other.hashCode;
if (owned != nullptr) {
other.language = other.script = "";
other.owned = nullptr;
other.hashCode = 0;
}
return *this;
}
UBool LSR::isEquivalentTo(const LSR &other) const {
return
uprv_strcmp(language, other.language) == 0 &&
uprv_strcmp(script, other.script) == 0 &&
regionIndex == other.regionIndex &&
// Compare regions if both are ill-formed (and their indexes are 0).
(regionIndex > 0 || uprv_strcmp(region, other.region) == 0);
}
bool LSR::operator==(const LSR &other) const {
return
uprv_strcmp(language, other.language) == 0 &&
uprv_strcmp(script, other.script) == 0 &&
regionIndex == other.regionIndex &&
// Compare regions if both are ill-formed (and their indexes are 0).
(regionIndex > 0 || uprv_strcmp(region, other.region) == 0) &&
flags == other.flags;
}
int32_t LSR::indexForRegion(const char *region) {
int32_t c = region[0];
int32_t a = c - '0';
if (0 <= a && a <= 9) { // digits: "419"
int32_t b = region[1] - '0';
if (b < 0 || 9 < b) { return 0; }
c = region[2] - '0';
if (c < 0 || 9 < c || region[3] != 0) { return 0; }
return (10 * a + b) * 10 + c + 1;
} else { // letters: "DE"
a = uprv_upperOrdinal(c);
if (a < 0 || 25 < a) { return 0; }
int32_t b = uprv_upperOrdinal(region[1]);
if (b < 0 || 25 < b || region[2] != 0) { return 0; }
return 26 * a + b + 1001;
}
return 0;
}
LSR &LSR::setHashCode() {
if (hashCode == 0) {
uint32_t h = ustr_hashCharsN(language, static_cast<int32_t>(uprv_strlen(language)));
h = h * 37 + ustr_hashCharsN(script, static_cast<int32_t>(uprv_strlen(script)));
h = h * 37 + regionIndex;
hashCode = h * 37 + flags;
}
return *this;
}
U_NAMESPACE_END
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