The Tor Browser: netwerk/cache/nsCache.cpp@a63d609f5ebe

     1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-

     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/. */

     7 #include "nsCache.h"

     8 #include "nsReadableUtils.h"

     9 #include "nsDependentSubstring.h"

    10 #include "nsString.h"

    13 /**

    14  * Cache Service Utility Functions

    15  */

    17 #if defined(PR_LOGGING)

    18 PRLogModuleInfo * gCacheLog = nullptr;

    21 void

    22 CacheLogInit()

    23 {

    24     if (gCacheLog) return;

    25     gCacheLog = PR_NewLogModule("cache");

    26     NS_ASSERTION(gCacheLog, "\nfailed to allocate cache log.\n");

    27 }

    30 void

    31 CacheLogPrintPath(PRLogModuleLevel level, const char * format, nsIFile * item)

    32 {

    33     nsAutoCString path;

    34     nsresult rv = item->GetNativePath(path);

    35     if (NS_SUCCEEDED(rv)) {

    36         PR_LOG(gCacheLog, level, (format, path.get()));

    37     } else {

    38         PR_LOG(gCacheLog, level, ("GetNativePath failed: %x", rv));

    39     }

    40 }

    42 #endif

    45 uint32_t

    46 SecondsFromPRTime(PRTime prTime)

    47 {

    48   int64_t  microSecondsPerSecond = PR_USEC_PER_SEC;

    49   return uint32_t(prTime / microSecondsPerSecond);

    50 }

    53 PRTime

    54 PRTimeFromSeconds(uint32_t seconds)

    55 {

    56   int64_t intermediateResult = seconds;

    57   PRTime prTime = intermediateResult * PR_USEC_PER_SEC;

    58   return prTime;

    59 }

    62 nsresult

    63 ClientIDFromCacheKey(const nsACString&  key, char ** result)

    64 {

    65     nsresult  rv = NS_OK;

    66     *result = nullptr;

    68     nsReadingIterator<char> colon;

    69     key.BeginReading(colon);

    71     nsReadingIterator<char> start;

    72     key.BeginReading(start);

    74     nsReadingIterator<char> end;

    75     key.EndReading(end);

    77     if (FindCharInReadable(':', colon, end)) {

    78         *result = ToNewCString( Substring(start, colon));

    79         if (!*result) rv = NS_ERROR_OUT_OF_MEMORY;

    80     } else {

    81         NS_ASSERTION(false, "FindCharInRead failed to find ':'");

    82         rv = NS_ERROR_UNEXPECTED;

    83     }

    84     return rv;

    85 }

    88 nsresult

    89 ClientKeyFromCacheKey(const nsCString& key, nsACString &result)

    90 {

    91     nsresult  rv = NS_OK;

    93     nsReadingIterator<char> start;

    94     key.BeginReading(start);

    96     nsReadingIterator<char> end;

    97     key.EndReading(end);

    99     if (FindCharInReadable(':', start, end)) {

   100         ++start;  // advance past clientID ':' delimiter

   101         result.Assign(Substring(start, end));

   102     } else {

   103         NS_ASSERTION(false, "FindCharInRead failed to find ':'");

   104         rv = NS_ERROR_UNEXPECTED;

   105         result.Truncate(0);

   106     }

   107     return rv;

   108 }

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