Issue #1829 - Revert "Issue #1751"

intl/locale/mac/nsCollationMacUC.cpp

@@ -0,0 +1,253 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsCollationMacUC.h"
+#include "nsILocaleService.h"
+#include "nsIPrefBranch.h"
+#include "nsIPrefService.h"
+#include "nsIServiceManager.h"
+#include "prmem.h"
+#include "nsString.h"
+
+NS_IMPL_ISUPPORTS(nsCollationMacUC, nsICollation)
+
+nsCollationMacUC::nsCollationMacUC()
+  : mInit(false)
+  , mHasCollator(false)
+  , mLocaleICU(nullptr)
+  , mLastStrength(-1)
+  , mCollatorICU(nullptr)
+{ }
+
+nsCollationMacUC::~nsCollationMacUC()
+{
+#ifdef DEBUG
+  nsresult res =
+#endif
+    CleanUpCollator();
+  NS_ASSERTION(NS_SUCCEEDED(res), "CleanUpCollator failed");
+  if (mLocaleICU) {
+    free(mLocaleICU);
+    mLocaleICU = nullptr;
+  }
+}
+
+nsresult nsCollationMacUC::ConvertStrength(const int32_t aNSStrength,
+                                           UCollationStrength* aICUStrength,
+                                           UColAttributeValue* aCaseLevelOut)
+{
+  NS_ENSURE_ARG_POINTER(aICUStrength);
+  NS_ENSURE_TRUE((aNSStrength < 4), NS_ERROR_FAILURE);
+
+  UCollationStrength strength = UCOL_DEFAULT;
+  UColAttributeValue caseLevel = UCOL_OFF;
+  switch (aNSStrength) {
+    case kCollationCaseInSensitive:
+      strength = UCOL_PRIMARY;
+      break;
+    case kCollationCaseInsensitiveAscii:
+      strength = UCOL_SECONDARY;
+      break;
+    case kCollationAccentInsenstive:
+      caseLevel = UCOL_ON;
+      strength = UCOL_PRIMARY;
+      break;
+    case kCollationCaseSensitive:
+      strength = UCOL_TERTIARY;
+      break;
+    default:
+      NS_WARNING("Bad aNSStrength passed to ConvertStrength.");
+      return NS_ERROR_FAILURE;
+  }
+
+  *aICUStrength = strength;
+  *aCaseLevelOut = caseLevel;
+
+  return NS_OK;
+}
+
+nsresult nsCollationMacUC::ConvertLocaleICU(nsILocale* aNSLocale, char** aICULocale)
+{
+  NS_ENSURE_ARG_POINTER(aNSLocale);
+  NS_ENSURE_ARG_POINTER(aICULocale);
+
+  nsAutoString localeString;
+  nsresult res = aNSLocale->GetCategory(NS_LITERAL_STRING("NSILOCALE_COLLATE"), localeString);
+  NS_ENSURE_TRUE(NS_SUCCEEDED(res) && !localeString.IsEmpty(),
+                 NS_ERROR_FAILURE);
+  NS_LossyConvertUTF16toASCII tmp(localeString);
+  tmp.ReplaceChar('-', '_');
+  char* locale = (char*)malloc(tmp.Length() + 1);
+  if (!locale) {
+    return NS_ERROR_OUT_OF_MEMORY;
+  }
+  strcpy(locale, tmp.get());
+
+  *aICULocale = locale;
+
+  return NS_OK;
+}
+
+nsresult nsCollationMacUC::EnsureCollator(const int32_t newStrength)
+{
+  NS_ENSURE_TRUE(mInit, NS_ERROR_NOT_INITIALIZED);
+  if (mHasCollator && (mLastStrength == newStrength))
+    return NS_OK;
+
+  nsresult res;
+  res = CleanUpCollator();
+  NS_ENSURE_SUCCESS(res, res);
+
+  NS_ENSURE_TRUE(mLocaleICU, NS_ERROR_NOT_INITIALIZED);
+
+  UErrorCode status;
+  status = U_ZERO_ERROR;
+  mCollatorICU = ucol_open(mLocaleICU, &status);
+  NS_ENSURE_TRUE(U_SUCCESS(status), NS_ERROR_FAILURE);
+
+  UCollationStrength strength;
+  UColAttributeValue caseLevel;
+  res = ConvertStrength(newStrength, &strength, &caseLevel);
+  NS_ENSURE_SUCCESS(res, res);
+
+  status = U_ZERO_ERROR;
+  ucol_setAttribute(mCollatorICU, UCOL_STRENGTH, strength, &status);
+  NS_ENSURE_TRUE(U_SUCCESS(status), NS_ERROR_FAILURE);
+  ucol_setAttribute(mCollatorICU, UCOL_CASE_LEVEL, caseLevel, &status);
+  NS_ENSURE_TRUE(U_SUCCESS(status), NS_ERROR_FAILURE);
+  ucol_setAttribute(mCollatorICU, UCOL_ALTERNATE_HANDLING, UCOL_DEFAULT, &status);
+  NS_ENSURE_TRUE(U_SUCCESS(status), NS_ERROR_FAILURE);
+  ucol_setAttribute(mCollatorICU, UCOL_NUMERIC_COLLATION, UCOL_OFF, &status);
+  NS_ENSURE_TRUE(U_SUCCESS(status), NS_ERROR_FAILURE);
+  ucol_setAttribute(mCollatorICU, UCOL_NORMALIZATION_MODE, UCOL_ON, &status);
+  NS_ENSURE_TRUE(U_SUCCESS(status), NS_ERROR_FAILURE);
+  ucol_setAttribute(mCollatorICU, UCOL_CASE_FIRST, UCOL_DEFAULT, &status);
+  NS_ENSURE_TRUE(U_SUCCESS(status), NS_ERROR_FAILURE);
+
+  mHasCollator = true;
+
+  mLastStrength = newStrength;
+  return NS_OK;
+}
+
+nsresult nsCollationMacUC::CleanUpCollator(void)
+{
+  if (mHasCollator) {
+    ucol_close(mCollatorICU);
+    mHasCollator = false;
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsCollationMacUC::Initialize(nsILocale* locale) 
+{
+  NS_ENSURE_TRUE((!mInit), NS_ERROR_ALREADY_INITIALIZED);
+  nsCOMPtr<nsILocale> appLocale;
+
+  nsresult rv;
+  if (!locale) {
+    nsCOMPtr<nsILocaleService> localeService = do_GetService(NS_LOCALESERVICE_CONTRACTID, &rv);
+    NS_ENSURE_SUCCESS(rv, rv);
+    rv = localeService->GetApplicationLocale(getter_AddRefs(appLocale));
+    NS_ENSURE_SUCCESS(rv, rv);
+    locale = appLocale;
+  }
+
+  rv = ConvertLocaleICU(locale, &mLocaleICU);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  mInit = true;
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsCollationMacUC::AllocateRawSortKey(int32_t strength, const nsAString& stringIn,
+                                                   uint8_t** key, uint32_t* outLen)
+{
+  NS_ENSURE_TRUE(mInit, NS_ERROR_NOT_INITIALIZED);
+  NS_ENSURE_ARG_POINTER(key);
+  NS_ENSURE_ARG_POINTER(outLen);
+
+  nsresult res = EnsureCollator(strength);
+  NS_ENSURE_SUCCESS(res, res);
+
+  uint32_t stringInLen = stringIn.Length();
+
+  const UChar* str = (const UChar*)stringIn.BeginReading();
+
+  int32_t keyLength = ucol_getSortKey(mCollatorICU, str, stringInLen, nullptr, 0);
+  NS_ENSURE_TRUE((stringInLen == 0 || keyLength > 0), NS_ERROR_FAILURE);
+
+  // Since key is freed elsewhere with PR_Free, allocate with PR_Malloc.
+  uint8_t* newKey = (uint8_t*)PR_Malloc(keyLength + 1);
+  if (!newKey) {
+      return NS_ERROR_OUT_OF_MEMORY;
+  }
+
+  keyLength = ucol_getSortKey(mCollatorICU, str, stringInLen, newKey, keyLength + 1);
+  NS_ENSURE_TRUE((stringInLen == 0 || keyLength > 0), NS_ERROR_FAILURE);
+
+  *key = newKey;
+  *outLen = keyLength;
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsCollationMacUC::CompareString(int32_t strength, const nsAString& string1,
+                                              const nsAString& string2, int32_t* result)
+{
+  NS_ENSURE_TRUE(mInit, NS_ERROR_NOT_INITIALIZED);
+  NS_ENSURE_ARG_POINTER(result);
+  *result = 0;
+
+  nsresult rv = EnsureCollator(strength);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  UCollationResult uresult;
+  uresult = ucol_strcoll(mCollatorICU,
+                         (const UChar*)string1.BeginReading(),
+                         string1.Length(),
+                         (const UChar*)string2.BeginReading(),
+                         string2.Length());
+  int32_t res;
+  switch (uresult) {
+    case UCOL_LESS:
+      res = -1;
+      break;
+    case UCOL_EQUAL:
+      res = 0;
+      break;
+    case UCOL_GREATER:
+      res = 1;
+      break;
+    default:
+      MOZ_CRASH("ucol_strcoll returned bad UCollationResult");
+  }
+  *result = res;
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsCollationMacUC::CompareRawSortKey(const uint8_t* key1, uint32_t len1,
+                                                  const uint8_t* key2, uint32_t len2,
+                                                  int32_t* result)
+{
+  NS_ENSURE_TRUE(mInit, NS_ERROR_NOT_INITIALIZED);
+  NS_ENSURE_ARG_POINTER(key1);
+  NS_ENSURE_ARG_POINTER(key2);
+  NS_ENSURE_ARG_POINTER(result);
+  *result = 0;
+
+  int32_t tmpResult = strcmp((const char*)key1, (const char*)key2);
+  int32_t res;
+  if (tmpResult < 0) {
+      res = -1;
+  } else if (tmpResult > 0) {
+      res = 1;
+  } else {
+      res = 0;
+  }
+  *result = res;
+  return NS_OK;
+}