gecko-dev/xpcom/build/Omnijar.cpp
2014-08-13 11:45:37 -07:00

185 lines
4.8 KiB
C++

/* -*- 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 "Omnijar.h"
#include "nsDirectoryService.h"
#include "nsDirectoryServiceDefs.h"
#include "nsIFile.h"
#include "nsZipArchive.h"
#include "nsNetUtil.h"
namespace mozilla {
nsIFile* Omnijar::sPath[2] = { nullptr, nullptr };
nsZipArchive* Omnijar::sReader[2] = { nullptr, nullptr };
bool Omnijar::sInitialized = false;
static bool sIsUnified = false;
static bool sIsNested[2] = { false, false };
static const char* sProp[2] = {
NS_GRE_DIR, NS_XPCOM_CURRENT_PROCESS_DIR
};
#define SPROP(Type) ((Type == mozilla::Omnijar::GRE) ? sProp[GRE] : sProp[APP])
void
Omnijar::CleanUpOne(Type aType)
{
if (sReader[aType]) {
sReader[aType]->CloseArchive();
NS_IF_RELEASE(sReader[aType]);
}
sReader[aType] = nullptr;
NS_IF_RELEASE(sPath[aType]);
}
void
Omnijar::InitOne(nsIFile* aPath, Type aType)
{
nsCOMPtr<nsIFile> file;
if (aPath) {
file = aPath;
} else {
nsCOMPtr<nsIFile> dir;
nsDirectoryService::gService->Get(SPROP(aType), NS_GET_IID(nsIFile),
getter_AddRefs(dir));
NS_NAMED_LITERAL_CSTRING(kOmnijarName, NS_STRINGIFY(OMNIJAR_NAME));
if (NS_FAILED(dir->Clone(getter_AddRefs(file))) ||
NS_FAILED(file->AppendNative(kOmnijarName))) {
return;
}
}
bool isFile;
if (NS_FAILED(file->IsFile(&isFile)) || !isFile) {
// If we're not using an omni.jar for GRE, and we don't have an
// omni.jar for APP, check if both directories are the same.
if ((aType == APP) && (!sPath[GRE])) {
nsCOMPtr<nsIFile> greDir, appDir;
bool equals;
nsDirectoryService::gService->Get(SPROP(GRE), NS_GET_IID(nsIFile),
getter_AddRefs(greDir));
nsDirectoryService::gService->Get(SPROP(APP), NS_GET_IID(nsIFile),
getter_AddRefs(appDir));
if (NS_SUCCEEDED(greDir->Equals(appDir, &equals)) && equals) {
sIsUnified = true;
}
}
return;
}
bool equals;
if ((aType == APP) && (sPath[GRE]) &&
NS_SUCCEEDED(sPath[GRE]->Equals(file, &equals)) && equals) {
// If we're using omni.jar on both GRE and APP and their path
// is the same, we're in the unified case.
sIsUnified = true;
return;
}
nsRefPtr<nsZipArchive> zipReader = new nsZipArchive();
if (NS_FAILED(zipReader->OpenArchive(file))) {
return;
}
nsRefPtr<nsZipHandle> handle;
if (NS_SUCCEEDED(nsZipHandle::Init(zipReader, NS_STRINGIFY(OMNIJAR_NAME),
getter_AddRefs(handle)))) {
zipReader = new nsZipArchive();
if (NS_FAILED(zipReader->OpenArchive(handle))) {
return;
}
sIsNested[aType] = true;
}
CleanUpOne(aType);
sReader[aType] = zipReader;
NS_IF_ADDREF(sReader[aType]);
sPath[aType] = file;
NS_IF_ADDREF(sPath[aType]);
}
void
Omnijar::Init(nsIFile* aGrePath, nsIFile* aAppPath)
{
InitOne(aGrePath, GRE);
InitOne(aAppPath, APP);
sInitialized = true;
}
void
Omnijar::CleanUp()
{
CleanUpOne(GRE);
CleanUpOne(APP);
sInitialized = false;
}
already_AddRefed<nsZipArchive>
Omnijar::GetReader(nsIFile* aPath)
{
NS_ABORT_IF_FALSE(IsInitialized(), "Omnijar not initialized");
bool equals;
nsresult rv;
if (sPath[GRE] && !sIsNested[GRE]) {
rv = sPath[GRE]->Equals(aPath, &equals);
if (NS_SUCCEEDED(rv) && equals) {
return GetReader(GRE);
}
}
if (sPath[APP] && !sIsNested[APP]) {
rv = sPath[APP]->Equals(aPath, &equals);
if (NS_SUCCEEDED(rv) && equals) {
return GetReader(APP);
}
}
return nullptr;
}
nsresult
Omnijar::GetURIString(Type aType, nsACString& aResult)
{
NS_ABORT_IF_FALSE(IsInitialized(), "Omnijar not initialized");
aResult.Truncate();
// Return an empty string for APP in the unified case.
if ((aType == APP) && sIsUnified) {
return NS_OK;
}
nsAutoCString omniJarSpec;
if (sPath[aType]) {
nsresult rv = NS_GetURLSpecFromActualFile(sPath[aType], omniJarSpec);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
aResult = "jar:";
if (sIsNested[aType]) {
aResult += "jar:";
}
aResult += omniJarSpec;
aResult += "!";
if (sIsNested[aType]) {
aResult += "/" NS_STRINGIFY(OMNIJAR_NAME) "!";
}
} else {
nsCOMPtr<nsIFile> dir;
nsDirectoryService::gService->Get(SPROP(aType), NS_GET_IID(nsIFile),
getter_AddRefs(dir));
nsresult rv = NS_GetURLSpecFromActualFile(dir, aResult);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
}
aResult += "/";
return NS_OK;
}
} /* namespace mozilla */