netwerk/cache/nsCache.cpp

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
   2  *
   3  * This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "nsCache.h"
   8 #include "nsReadableUtils.h"
   9 #include "nsDependentSubstring.h"
  10 #include "nsString.h"
  11 #include "mozilla/IntegerPrintfMacros.h"
  12
  13 /**
  14  * Cache Service Utility Functions
  15  */
  16
  17 mozilla::LazyLogModule gCacheLog("cache");
  18
  19 void CacheLogPrintPath(mozilla::LogLevel level, const char* format,
  20                        nsIFile* item) {
  21   MOZ_LOG(gCacheLog, level, (format, item->HumanReadablePath().get()));
  22 }
  23
  24 uint32_t SecondsFromPRTime(PRTime prTime) {
  25   int64_t microSecondsPerSecond = PR_USEC_PER_SEC;
  26   return uint32_t(prTime / microSecondsPerSecond);
  27 }
  28
  29 PRTime PRTimeFromSeconds(uint32_t seconds) {
  30   int64_t intermediateResult = seconds;
  31   PRTime prTime = intermediateResult * PR_USEC_PER_SEC;
  32   return prTime;
  33 }
  34
  35 nsresult ClientIDFromCacheKey(const nsACString& key, nsACString& result) {
  36   nsReadingIterator<char> colon;
  37   key.BeginReading(colon);
  38
  39   nsReadingIterator<char> start;
  40   key.BeginReading(start);
  41
  42   nsReadingIterator<char> end;
  43   key.EndReading(end);
  44
  45   if (FindCharInReadable(':', colon, end)) {
  46     result.Assign(Substring(start, colon));
  47     return NS_OK;
  48   }
  49
  50   NS_ASSERTION(false, "FindCharInRead failed to find ':'");
  51   return NS_ERROR_UNEXPECTED;
  52 }
  53
  54 nsresult ClientKeyFromCacheKey(const nsCString& key, nsACString& result) {
  55   nsReadingIterator<char> start;
  56   key.BeginReading(start);
  57
  58   nsReadingIterator<char> end;
  59   key.EndReading(end);
  60
  61   if (FindCharInReadable(':', start, end)) {
  62     ++start;  // advance past clientID ':' delimiter
  63     result.Assign(Substring(start, end));
  64     return NS_OK;
  65   }
  66
  67   NS_ASSERTION(false, "FindCharInRead failed to find ':'");
  68   result.Truncate(0);
  69   return NS_ERROR_UNEXPECTED;
  70 }