tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
Log | Files | Refs | README | LICENSE

nsUConvPropertySearch.cpp (1203B)

      1 /* This Source Code Form is subject to the terms of the Mozilla Public
      2 * License, v. 2.0. If a copy of the MPL was not distributed with this
      3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      4 
      5 #include "nsUConvPropertySearch.h"
      6 #include "nsCRT.h"
      7 #include "nsString.h"
      8 #include "mozilla/BinarySearch.h"
      9 
     10 namespace {
     11 
     12 struct PropertyComparator {
     13  const nsCString& mKey;
     14  explicit PropertyComparator(const nsCString& aKey) : mKey(aKey) {}
     15  int operator()(const nsUConvProp& aProperty) const {
     16    return Compare(mKey, nsDependentCString(aProperty.mKey));
     17  }
     18 };
     19 
     20 }  // namespace
     21 
     22 // static
     23 nsresult nsUConvPropertySearch::SearchPropertyValue(
     24    const nsUConvProp aProperties[], int32_t aNumberOfProperties,
     25    const nsACString& aKey, nsACString& aValue) {
     26  using mozilla::BinarySearchIf;
     27 
     28  const nsCString& flat = PromiseFlatCString(aKey);
     29  size_t index;
     30  if (BinarySearchIf(aProperties, 0, aNumberOfProperties,
     31                     PropertyComparator(flat), &index)) {
     32    nsDependentCString val(aProperties[index].mValue,
     33                           aProperties[index].mValueLength);
     34    aValue.Assign(val);
     35    return NS_OK;
     36  }
     37 
     38  aValue.Truncate();
     39  return NS_ERROR_FAILURE;
     40 }