initial commit, 4.5 stable

thirdparty/icu4c/common/locbased.cpp

@@ -0,0 +1,95 @@
+// © 2016 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html
+/*
+**********************************************************************
+* Copyright (c) 2004-2014, International Business Machines
+* Corporation and others.  All Rights Reserved.
+**********************************************************************
+* Author: Alan Liu
+* Created: January 16 2004
+* Since: ICU 2.8
+**********************************************************************
+*/
+#include "locbased.h"
+#include "cstring.h"
+#include "charstr.h"
+
+U_NAMESPACE_BEGIN
+
+Locale LocaleBased::getLocale(const CharString* valid, const CharString* actual,
+                              ULocDataLocaleType type, UErrorCode& status) {
+    const char* id = getLocaleID(valid, actual, type, status);
+    return Locale(id != nullptr ? id : "");
+}
+
+const char* LocaleBased::getLocaleID(const CharString* valid, const CharString* actual,
+                                     ULocDataLocaleType type, UErrorCode& status) {
+    if (U_FAILURE(status)) {
+        return nullptr;
+    }
+
+    switch(type) {
+    case ULOC_VALID_LOCALE:
+        return valid == nullptr ? "" : valid->data();
+    case ULOC_ACTUAL_LOCALE:
+        return actual == nullptr ? "" : actual->data();
+    default:
+        status = U_ILLEGAL_ARGUMENT_ERROR;
+        return nullptr;
+    }
+}
+
+void LocaleBased::setLocaleIDs(const CharString* validID, const CharString* actualID, UErrorCode& status) {
+    setValidLocaleID(validID, status);
+    setActualLocaleID(actualID,status);
+}
+void LocaleBased::setLocaleIDs(const char* validID, const char* actualID, UErrorCode& status) {
+    setValidLocaleID(validID, status);
+    setActualLocaleID(actualID,status);
+}
+
+void LocaleBased::setLocaleID(const char* id, CharString*& dest, UErrorCode& status) {
+    if (U_FAILURE(status)) { return; }
+    if (id == nullptr || *id == 0) {
+        delete dest;
+        dest = nullptr;
+    } else {
+        if (dest == nullptr) {
+            dest = new CharString(id, status);
+            if (dest == nullptr) {
+                status = U_MEMORY_ALLOCATION_ERROR;
+                return;
+            }
+        } else {
+            dest->copyFrom(id, status);
+        }
+    }
+}
+
+void LocaleBased::setLocaleID(const CharString* id, CharString*& dest, UErrorCode& status) {
+    if (U_FAILURE(status)) { return; }
+    if (id == nullptr || id->isEmpty()) {
+        delete dest;
+        dest = nullptr;
+    } else {
+        if (dest == nullptr) {
+            dest = new CharString(*id, status);
+            if (dest == nullptr) {
+                status = U_MEMORY_ALLOCATION_ERROR;
+                return;
+            }
+        } else {
+            dest->copyFrom(*id, status);
+        }
+    }
+}
+
+bool LocaleBased::equalIDs(const CharString* left, const CharString* right) {
+    // true if both are nullptr
+    if (left == nullptr && right == nullptr) return true;
+    // false if only one is nullptr
+    if (left == nullptr || right == nullptr) return false;
+    return *left == *right;
+}
+
+U_NAMESPACE_END