michael@0: /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
michael@0:  *
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "nsCache.h"
michael@0: #include "nsReadableUtils.h"
michael@0: #include "nsDependentSubstring.h"
michael@0: #include "nsString.h"
michael@0: 
michael@0: 
michael@0: /**
michael@0:  * Cache Service Utility Functions
michael@0:  */
michael@0: 
michael@0: #if defined(PR_LOGGING)
michael@0: PRLogModuleInfo * gCacheLog = nullptr;
michael@0: 
michael@0: 
michael@0: void
michael@0: CacheLogInit()
michael@0: {
michael@0:     if (gCacheLog) return;
michael@0:     gCacheLog = PR_NewLogModule("cache");
michael@0:     NS_ASSERTION(gCacheLog, "\nfailed to allocate cache log.\n");
michael@0: }
michael@0: 
michael@0: 
michael@0: void
michael@0: CacheLogPrintPath(PRLogModuleLevel level, const char * format, nsIFile * item)
michael@0: {
michael@0:     nsAutoCString path;
michael@0:     nsresult rv = item->GetNativePath(path);
michael@0:     if (NS_SUCCEEDED(rv)) {
michael@0:         PR_LOG(gCacheLog, level, (format, path.get()));
michael@0:     } else {
michael@0:         PR_LOG(gCacheLog, level, ("GetNativePath failed: %x", rv));
michael@0:     }
michael@0: }
michael@0: 
michael@0: #endif
michael@0: 
michael@0: 
michael@0: uint32_t
michael@0: SecondsFromPRTime(PRTime prTime)
michael@0: {
michael@0:   int64_t  microSecondsPerSecond = PR_USEC_PER_SEC;
michael@0:   return uint32_t(prTime / microSecondsPerSecond);
michael@0: }
michael@0: 
michael@0: 
michael@0: PRTime
michael@0: PRTimeFromSeconds(uint32_t seconds)
michael@0: {
michael@0:   int64_t intermediateResult = seconds;
michael@0:   PRTime prTime = intermediateResult * PR_USEC_PER_SEC;
michael@0:   return prTime;
michael@0: }
michael@0: 
michael@0: 
michael@0: nsresult
michael@0: ClientIDFromCacheKey(const nsACString&  key, char ** result)
michael@0: {
michael@0:     nsresult  rv = NS_OK;
michael@0:     *result = nullptr;
michael@0: 
michael@0:     nsReadingIterator<char> colon;
michael@0:     key.BeginReading(colon);
michael@0:         
michael@0:     nsReadingIterator<char> start;
michael@0:     key.BeginReading(start);
michael@0:         
michael@0:     nsReadingIterator<char> end;
michael@0:     key.EndReading(end);
michael@0:         
michael@0:     if (FindCharInReadable(':', colon, end)) {
michael@0:         *result = ToNewCString( Substring(start, colon));
michael@0:         if (!*result) rv = NS_ERROR_OUT_OF_MEMORY;
michael@0:     } else {
michael@0:         NS_ASSERTION(false, "FindCharInRead failed to find ':'");
michael@0:         rv = NS_ERROR_UNEXPECTED;
michael@0:     }
michael@0:     return rv;
michael@0: }
michael@0: 
michael@0: 
michael@0: nsresult
michael@0: ClientKeyFromCacheKey(const nsCString& key, nsACString &result)
michael@0: {
michael@0:     nsresult  rv = NS_OK;
michael@0: 
michael@0:     nsReadingIterator<char> start;
michael@0:     key.BeginReading(start);
michael@0:         
michael@0:     nsReadingIterator<char> end;
michael@0:     key.EndReading(end);
michael@0:         
michael@0:     if (FindCharInReadable(':', start, end)) {
michael@0:         ++start;  // advance past clientID ':' delimiter
michael@0:         result.Assign(Substring(start, end));
michael@0:     } else {
michael@0:         NS_ASSERTION(false, "FindCharInRead failed to find ':'");
michael@0:         rv = NS_ERROR_UNEXPECTED;
michael@0:         result.Truncate(0);
michael@0:     }
michael@0:     return rv;
michael@0: }