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78 lines
3.2 KiB
C++
78 lines
3.2 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef nsStartupCacheUtils_h_
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#define nsStartupCacheUtils_h_
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#include "nsString.h"
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#include "nsIStorageStream.h"
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#include "nsIObjectInputStream.h"
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#include "nsIObjectOutputStream.h"
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#include "mozilla/UniquePtr.h"
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#include "mozilla/UniquePtrExtensions.h"
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class nsIURI;
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namespace mozilla {
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namespace scache {
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nsresult NewObjectInputStreamFromBuffer(const char* buffer, uint32_t len,
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nsIObjectInputStream** stream);
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// We can't retrieve the wrapped stream from the objectOutputStream later,
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// so we return it here. We give callers in debug builds the option
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// to wrap the outputstream in a debug stream, which will detect if
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// non-singleton objects are written out multiple times during a serialization.
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// This could cause them to be deserialized incorrectly (as multiple copies
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// instead of references).
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nsresult NewObjectOutputWrappedStorageStream(
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nsIObjectOutputStream** wrapperStream, nsIStorageStream** stream,
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bool wantDebugStream);
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// Creates a buffer for storing the stream into the cache. The buffer is
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// allocated with 'new []'. After calling this function, the caller would
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// typically call StartupCache::PutBuffer with the returned buffer.
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nsresult NewBufferFromStorageStream(nsIStorageStream* storageStream,
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UniqueFreePtr<char[]>* buffer,
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uint32_t* len);
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nsresult ResolveURI(nsIURI* in, nsIURI** out);
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// PathifyURI transforms uris into useful zip paths
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// to make it easier to manipulate startup cache entries
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// using standard zip tools.
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//
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// Transformations applied:
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// * resource:// URIs are resolved to their corresponding file/jar URI to
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// canonicalize resources URIs other than gre and app.
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// * Paths under GRE or APP directory have their base path replaced with
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// resource/gre or resource/app to avoid depending on install location.
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// * jar:file:///path/to/file.jar!/sub/path urls are replaced with
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// /path/to/file.jar/sub/path
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//
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// The result is concatenated with loaderType and stored into the string
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// passed in.
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//
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// For example, in the js loader (loaderType = "jsloader"):
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// resource://gre/modules/XPCOMUtils.sys.mjs or
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// file://$GRE_DIR/modules/XPCOMUtils.sys.mjs or
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// jar:file://$GRE_DIR/omni.jar!/modules/XPCOMUtils.sys.mjs becomes
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// jsloader/resource/gre/modules/XPCOMUtils.sys.mjs
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// file://$PROFILE_DIR/extensions/{uuid}/components/component.js becomes
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// jsloader/$PROFILE_DIR/extensions/%7Buuid%7D/components/component.js
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// jar:file://$PROFILE_DIR/extensions/some.xpi!/components/component.js becomes
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// jsloader/$PROFILE_DIR/extensions/some.xpi/components/component.js
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nsresult PathifyURI(const char* loaderType, size_t loaderTypeLength, nsIURI* in,
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nsACString& out);
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template <int N>
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nsresult PathifyURI(const char (&loaderType)[N], nsIURI* in, nsACString& out) {
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return PathifyURI(loaderType, N - 1, in, out);
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}
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} // namespace scache
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} // namespace mozilla
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#endif // nsStartupCacheUtils_h_
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