import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

netwerk/cache/nsCache.cpp

@@ -0,0 +1,95 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * 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 "nsCache.h"
+#include "nsReadableUtils.h"
+#include "nsDependentSubstring.h"
+#include "nsString.h"
+
+
+/**
+ * Cache Service Utility Functions
+ */
+
+mozilla::LazyLogModule gCacheLog("cache");
+
+void
+CacheLogPrintPath(mozilla::LogLevel level, const char * format, nsIFile * item)
+{
+    nsAutoCString path;
+    nsresult rv = item->GetNativePath(path);
+    if (NS_SUCCEEDED(rv)) {
+        MOZ_LOG(gCacheLog, level, (format, path.get()));
+    } else {
+        MOZ_LOG(gCacheLog, level, ("GetNativePath failed: %x", rv));
+    }
+}
+
+
+uint32_t
+SecondsFromPRTime(PRTime prTime)
+{
+  int64_t  microSecondsPerSecond = PR_USEC_PER_SEC;
+  return uint32_t(prTime / microSecondsPerSecond);
+}
+
+
+PRTime
+PRTimeFromSeconds(uint32_t seconds)
+{
+  int64_t intermediateResult = seconds;
+  PRTime prTime = intermediateResult * PR_USEC_PER_SEC;
+  return prTime;
+}
+
+
+nsresult
+ClientIDFromCacheKey(const nsACString&  key, char ** result)
+{
+    nsresult  rv = NS_OK;
+    *result = nullptr;
+
+    nsReadingIterator<char> colon;
+    key.BeginReading(colon);
+        
+    nsReadingIterator<char> start;
+    key.BeginReading(start);
+        
+    nsReadingIterator<char> end;
+    key.EndReading(end);
+        
+    if (FindCharInReadable(':', colon, end)) {
+        *result = ToNewCString( Substring(start, colon));
+        if (!*result) rv = NS_ERROR_OUT_OF_MEMORY;
+    } else {
+        NS_ASSERTION(false, "FindCharInRead failed to find ':'");
+        rv = NS_ERROR_UNEXPECTED;
+    }
+    return rv;
+}
+
+
+nsresult
+ClientKeyFromCacheKey(const nsCString& key, nsACString &result)
+{
+    nsresult  rv = NS_OK;
+
+    nsReadingIterator<char> start;
+    key.BeginReading(start);
+        
+    nsReadingIterator<char> end;
+    key.EndReading(end);
+        
+    if (FindCharInReadable(':', start, end)) {
+        ++start;  // advance past clientID ':' delimiter
+        result.Assign(Substring(start, end));
+    } else {
+        NS_ASSERTION(false, "FindCharInRead failed to find ':'");
+        rv = NS_ERROR_UNEXPECTED;
+        result.Truncate(0);
+    }
+    return rv;
+}