2035 lines
61 KiB
C++
2035 lines
61 KiB
C++
/*
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* Copyright (C) 2006 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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//
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// Provide access to read-only assets.
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//
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#define LOG_TAG "asset"
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#define ATRACE_TAG ATRACE_TAG_RESOURCES
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//#define LOG_NDEBUG 0
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#include <androidfw/Asset.h>
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#include <androidfw/AssetDir.h>
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#include <androidfw/AssetManager.h>
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#include <androidfw/misc.h>
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#include <androidfw/ResourceTypes.h>
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#include <androidfw/ZipFileRO.h>
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#include <utils/Atomic.h>
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#include <utils/Log.h>
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#include <utils/String8.h>
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#include <utils/String8.h>
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#include <utils/threads.h>
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#include <utils/Timers.h>
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#ifdef HAVE_ANDROID_OS
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#include <cutils/trace.h>
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#endif
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#include <assert.h>
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#include <dirent.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <strings.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#ifndef TEMP_FAILURE_RETRY
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/* Used to retry syscalls that can return EINTR. */
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#define TEMP_FAILURE_RETRY(exp) ({ \
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typeof (exp) _rc; \
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do { \
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_rc = (exp); \
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} while (_rc == -1 && errno == EINTR); \
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_rc; })
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#endif
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#ifdef HAVE_ANDROID_OS
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#define MY_TRACE_BEGIN(x) ATRACE_BEGIN(x)
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#define MY_TRACE_END() ATRACE_END()
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#else
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#define MY_TRACE_BEGIN(x)
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#define MY_TRACE_END()
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#endif
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using namespace android;
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/*
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* Names for default app, locale, and vendor. We might want to change
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* these to be an actual locale, e.g. always use en-US as the default.
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*/
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static const char* kDefaultLocale = "default";
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static const char* kDefaultVendor = "default";
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static const char* kAssetsRoot = "assets";
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static const char* kAppZipName = NULL; //"classes.jar";
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static const char* kSystemAssets = "framework/framework-res.apk";
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static const char* kIdmapCacheDir = "resource-cache";
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static const char* kExcludeExtension = ".EXCLUDE";
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static Asset* const kExcludedAsset = (Asset*) 0xd000000d;
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static volatile int32_t gCount = 0;
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namespace {
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// Transform string /a/b/c.apk to /data/resource-cache/a@b@c.apk@idmap
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String8 idmapPathForPackagePath(const String8& pkgPath)
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{
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const char* root = getenv("ANDROID_DATA");
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LOG_ALWAYS_FATAL_IF(root == NULL, "ANDROID_DATA not set");
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String8 path(root);
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path.appendPath(kIdmapCacheDir);
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char buf[256]; // 256 chars should be enough for anyone...
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strncpy(buf, pkgPath.string(), 255);
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buf[255] = '\0';
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char* filename = buf;
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while (*filename && *filename == '/') {
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++filename;
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}
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char* p = filename;
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while (*p) {
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if (*p == '/') {
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*p = '@';
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}
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++p;
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}
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path.appendPath(filename);
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path.append("@idmap");
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return path;
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}
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/*
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* Like strdup(), but uses C++ "new" operator instead of malloc.
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*/
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static char* strdupNew(const char* str)
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{
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char* newStr;
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int len;
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if (str == NULL)
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return NULL;
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len = strlen(str);
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newStr = new char[len+1];
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memcpy(newStr, str, len+1);
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return newStr;
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}
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}
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/*
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* ===========================================================================
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* AssetManager
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* ===========================================================================
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*/
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int32_t AssetManager::getGlobalCount()
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{
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return gCount;
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}
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AssetManager::AssetManager(CacheMode cacheMode)
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: mLocale(NULL), mVendor(NULL),
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mResources(NULL), mConfig(new ResTable_config),
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mCacheMode(cacheMode), mCacheValid(false)
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{
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int count = android_atomic_inc(&gCount)+1;
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//ALOGI("Creating AssetManager %p #%d\n", this, count);
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memset(mConfig, 0, sizeof(ResTable_config));
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}
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AssetManager::~AssetManager(void)
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{
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int count = android_atomic_dec(&gCount);
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//ALOGI("Destroying AssetManager in %p #%d\n", this, count);
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delete mConfig;
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delete mResources;
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// don't have a String class yet, so make sure we clean up
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delete[] mLocale;
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delete[] mVendor;
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}
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bool AssetManager::addAssetPath(const String8& path, void** cookie)
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{
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AutoMutex _l(mLock);
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asset_path ap;
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String8 realPath(path);
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if (kAppZipName) {
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realPath.appendPath(kAppZipName);
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}
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ap.type = ::getFileType(realPath.string());
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if (ap.type == kFileTypeRegular) {
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ap.path = realPath;
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} else {
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ap.path = path;
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ap.type = ::getFileType(path.string());
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if (ap.type != kFileTypeDirectory && ap.type != kFileTypeRegular) {
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ALOGW("Asset path %s is neither a directory nor file (type=%d).",
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path.string(), (int)ap.type);
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return false;
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}
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}
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// Skip if we have it already.
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for (size_t i=0; i<mAssetPaths.size(); i++) {
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if (mAssetPaths[i].path == ap.path) {
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if (cookie) {
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*cookie = (void*)(i+1);
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}
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return true;
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}
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}
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ALOGV("In %p Asset %s path: %s", this,
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ap.type == kFileTypeDirectory ? "dir" : "zip", ap.path.string());
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mAssetPaths.add(ap);
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// new paths are always added at the end
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if (cookie) {
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*cookie = (void*)mAssetPaths.size();
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}
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// add overlay packages for /system/framework; apps are handled by the
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// (Java) package manager
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if (strncmp(path.string(), "/system/framework/", 18) == 0) {
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// When there is an environment variable for /vendor, this
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// should be changed to something similar to how ANDROID_ROOT
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// and ANDROID_DATA are used in this file.
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String8 overlayPath("/vendor/overlay/framework/");
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overlayPath.append(path.getPathLeaf());
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if (TEMP_FAILURE_RETRY(access(overlayPath.string(), R_OK)) == 0) {
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asset_path oap;
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oap.path = overlayPath;
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oap.type = ::getFileType(overlayPath.string());
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bool addOverlay = (oap.type == kFileTypeRegular); // only .apks supported as overlay
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if (addOverlay) {
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oap.idmap = idmapPathForPackagePath(overlayPath);
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if (isIdmapStaleLocked(ap.path, oap.path, oap.idmap)) {
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addOverlay = createIdmapFileLocked(ap.path, oap.path, oap.idmap);
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}
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}
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if (addOverlay) {
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mAssetPaths.add(oap);
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} else {
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ALOGW("failed to add overlay package %s\n", overlayPath.string());
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}
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}
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}
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return true;
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}
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bool AssetManager::isIdmapStaleLocked(const String8& originalPath, const String8& overlayPath,
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const String8& idmapPath)
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{
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struct stat st;
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if (TEMP_FAILURE_RETRY(stat(idmapPath.string(), &st)) == -1) {
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if (errno == ENOENT) {
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return true; // non-existing idmap is always stale
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} else {
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ALOGW("failed to stat file %s: %s\n", idmapPath.string(), strerror(errno));
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return false;
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}
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}
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if (st.st_size < ResTable::IDMAP_HEADER_SIZE_BYTES) {
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ALOGW("file %s has unexpectedly small size=%zd\n", idmapPath.string(), (size_t)st.st_size);
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return false;
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}
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int fd = TEMP_FAILURE_RETRY(::open(idmapPath.string(), O_RDONLY));
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if (fd == -1) {
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ALOGW("failed to open file %s: %s\n", idmapPath.string(), strerror(errno));
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return false;
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}
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char buf[ResTable::IDMAP_HEADER_SIZE_BYTES];
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ssize_t bytesLeft = ResTable::IDMAP_HEADER_SIZE_BYTES;
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for (;;) {
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ssize_t r = TEMP_FAILURE_RETRY(read(fd, buf + ResTable::IDMAP_HEADER_SIZE_BYTES - bytesLeft,
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bytesLeft));
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if (r < 0) {
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TEMP_FAILURE_RETRY(close(fd));
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return false;
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}
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bytesLeft -= r;
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if (bytesLeft == 0) {
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break;
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}
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}
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TEMP_FAILURE_RETRY(close(fd));
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uint32_t cachedOriginalCrc, cachedOverlayCrc;
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if (!ResTable::getIdmapInfo(buf, ResTable::IDMAP_HEADER_SIZE_BYTES,
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&cachedOriginalCrc, &cachedOverlayCrc)) {
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return false;
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}
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uint32_t actualOriginalCrc, actualOverlayCrc;
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if (!getZipEntryCrcLocked(originalPath, "resources.arsc", &actualOriginalCrc)) {
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return false;
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}
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if (!getZipEntryCrcLocked(overlayPath, "resources.arsc", &actualOverlayCrc)) {
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return false;
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}
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return cachedOriginalCrc != actualOriginalCrc || cachedOverlayCrc != actualOverlayCrc;
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}
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bool AssetManager::getZipEntryCrcLocked(const String8& zipPath, const char* entryFilename,
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uint32_t* pCrc)
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{
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asset_path ap;
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ap.path = zipPath;
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const ZipFileRO* zip = getZipFileLocked(ap);
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if (zip == NULL) {
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return false;
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}
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const ZipEntryRO entry = zip->findEntryByName(entryFilename);
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if (entry == NULL) {
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return false;
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}
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if (!zip->getEntryInfo(entry, NULL, NULL, NULL, NULL, NULL, (long*)pCrc)) {
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return false;
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}
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return true;
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}
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bool AssetManager::createIdmapFileLocked(const String8& originalPath, const String8& overlayPath,
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const String8& idmapPath)
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{
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ALOGD("%s: originalPath=%s overlayPath=%s idmapPath=%s\n",
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__FUNCTION__, originalPath.string(), overlayPath.string(), idmapPath.string());
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ResTable tables[2];
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const String8* paths[2] = { &originalPath, &overlayPath };
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uint32_t originalCrc, overlayCrc;
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bool retval = false;
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ssize_t offset = 0;
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int fd = 0;
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uint32_t* data = NULL;
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size_t size;
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for (int i = 0; i < 2; ++i) {
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asset_path ap;
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ap.type = kFileTypeRegular;
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ap.path = *paths[i];
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Asset* ass = openNonAssetInPathLocked("resources.arsc", Asset::ACCESS_BUFFER, ap);
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if (ass == NULL) {
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ALOGW("failed to find resources.arsc in %s\n", ap.path.string());
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goto error;
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}
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tables[i].add(ass, (void*)1, false);
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}
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if (!getZipEntryCrcLocked(originalPath, "resources.arsc", &originalCrc)) {
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ALOGW("failed to retrieve crc for resources.arsc in %s\n", originalPath.string());
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goto error;
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}
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if (!getZipEntryCrcLocked(overlayPath, "resources.arsc", &overlayCrc)) {
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ALOGW("failed to retrieve crc for resources.arsc in %s\n", overlayPath.string());
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goto error;
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}
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if (tables[0].createIdmap(tables[1], originalCrc, overlayCrc,
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(void**)&data, &size) != NO_ERROR) {
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ALOGW("failed to generate idmap data for file %s\n", idmapPath.string());
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goto error;
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}
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// This should be abstracted (eg replaced by a stand-alone
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// application like dexopt, triggered by something equivalent to
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// installd).
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fd = TEMP_FAILURE_RETRY(::open(idmapPath.string(), O_WRONLY | O_CREAT | O_TRUNC, 0644));
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if (fd == -1) {
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ALOGW("failed to write idmap file %s (open: %s)\n", idmapPath.string(), strerror(errno));
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goto error_free;
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}
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for (;;) {
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ssize_t written = TEMP_FAILURE_RETRY(write(fd, data + offset, size));
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if (written < 0) {
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ALOGW("failed to write idmap file %s (write: %s)\n", idmapPath.string(),
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strerror(errno));
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goto error_close;
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}
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size -= (size_t)written;
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offset += written;
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if (size == 0) {
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break;
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}
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}
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retval = true;
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error_close:
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TEMP_FAILURE_RETRY(close(fd));
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error_free:
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free(data);
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error:
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return retval;
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}
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bool AssetManager::addDefaultAssets()
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{
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const char* root = getenv("ANDROID_ROOT");
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LOG_ALWAYS_FATAL_IF(root == NULL, "ANDROID_ROOT not set");
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String8 path(root);
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path.appendPath(kSystemAssets);
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return addAssetPath(path, NULL);
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}
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void* AssetManager::nextAssetPath(void* cookie) const
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{
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AutoMutex _l(mLock);
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size_t next = ((size_t)cookie)+1;
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return next > mAssetPaths.size() ? NULL : (void*)next;
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}
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String8 AssetManager::getAssetPath(void* cookie) const
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{
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AutoMutex _l(mLock);
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const size_t which = ((size_t)cookie)-1;
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if (which < mAssetPaths.size()) {
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return mAssetPaths[which].path;
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}
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return String8();
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}
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/*
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* Set the current locale. Use NULL to indicate no locale.
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*
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* Close and reopen Zip archives as appropriate, and reset cached
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* information in the locale-specific sections of the tree.
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*/
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void AssetManager::setLocale(const char* locale)
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{
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AutoMutex _l(mLock);
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setLocaleLocked(locale);
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}
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void AssetManager::setLocaleLocked(const char* locale)
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{
|
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if (mLocale != NULL) {
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/* previously set, purge cached data */
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purgeFileNameCacheLocked();
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//mZipSet.purgeLocale();
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delete[] mLocale;
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}
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mLocale = strdupNew(locale);
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updateResourceParamsLocked();
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}
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|
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/*
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* Set the current vendor. Use NULL to indicate no vendor.
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*
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* Close and reopen Zip archives as appropriate, and reset cached
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* information in the vendor-specific sections of the tree.
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*/
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void AssetManager::setVendor(const char* vendor)
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{
|
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AutoMutex _l(mLock);
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|
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if (mVendor != NULL) {
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/* previously set, purge cached data */
|
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purgeFileNameCacheLocked();
|
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//mZipSet.purgeVendor();
|
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delete[] mVendor;
|
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}
|
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mVendor = strdupNew(vendor);
|
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}
|
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|
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void AssetManager::setConfiguration(const ResTable_config& config, const char* locale)
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{
|
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AutoMutex _l(mLock);
|
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*mConfig = config;
|
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if (locale) {
|
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setLocaleLocked(locale);
|
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} else if (config.language[0] != 0) {
|
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char spec[9];
|
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spec[0] = config.language[0];
|
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spec[1] = config.language[1];
|
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if (config.country[0] != 0) {
|
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spec[2] = '_';
|
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spec[3] = config.country[0];
|
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spec[4] = config.country[1];
|
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spec[5] = 0;
|
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} else {
|
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spec[3] = 0;
|
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}
|
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setLocaleLocked(spec);
|
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} else {
|
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updateResourceParamsLocked();
|
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}
|
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}
|
|
|
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void AssetManager::getConfiguration(ResTable_config* outConfig) const
|
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{
|
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AutoMutex _l(mLock);
|
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*outConfig = *mConfig;
|
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}
|
|
|
|
/*
|
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* Open an asset.
|
|
*
|
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* The data could be;
|
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* - In a file on disk (assetBase + fileName).
|
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* - In a compressed file on disk (assetBase + fileName.gz).
|
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* - In a Zip archive, uncompressed or compressed.
|
|
*
|
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* It can be in a number of different directories and Zip archives.
|
|
* The search order is:
|
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* - [appname]
|
|
* - locale + vendor
|
|
* - "default" + vendor
|
|
* - locale + "default"
|
|
* - "default + "default"
|
|
* - "common"
|
|
* - (same as above)
|
|
*
|
|
* To find a particular file, we have to try up to eight paths with
|
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* all three forms of data.
|
|
*
|
|
* We should probably reject requests for "illegal" filenames, e.g. those
|
|
* with illegal characters or "../" backward relative paths.
|
|
*/
|
|
Asset* AssetManager::open(const char* fileName, AccessMode mode)
|
|
{
|
|
AutoMutex _l(mLock);
|
|
|
|
LOG_FATAL_IF(mAssetPaths.size() == 0, "No assets added to AssetManager");
|
|
|
|
|
|
if (mCacheMode != CACHE_OFF && !mCacheValid)
|
|
loadFileNameCacheLocked();
|
|
|
|
String8 assetName(kAssetsRoot);
|
|
assetName.appendPath(fileName);
|
|
|
|
/*
|
|
* For each top-level asset path, search for the asset.
|
|
*/
|
|
|
|
size_t i = mAssetPaths.size();
|
|
while (i > 0) {
|
|
i--;
|
|
ALOGV("Looking for asset '%s' in '%s'\n",
|
|
assetName.string(), mAssetPaths.itemAt(i).path.string());
|
|
Asset* pAsset = openNonAssetInPathLocked(assetName.string(), mode, mAssetPaths.itemAt(i));
|
|
if (pAsset != NULL) {
|
|
return pAsset != kExcludedAsset ? pAsset : NULL;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* Open a non-asset file as if it were an asset.
|
|
*
|
|
* The "fileName" is the partial path starting from the application
|
|
* name.
|
|
*/
|
|
Asset* AssetManager::openNonAsset(const char* fileName, AccessMode mode)
|
|
{
|
|
AutoMutex _l(mLock);
|
|
|
|
LOG_FATAL_IF(mAssetPaths.size() == 0, "No assets added to AssetManager");
|
|
|
|
|
|
if (mCacheMode != CACHE_OFF && !mCacheValid)
|
|
loadFileNameCacheLocked();
|
|
|
|
/*
|
|
* For each top-level asset path, search for the asset.
|
|
*/
|
|
|
|
size_t i = mAssetPaths.size();
|
|
while (i > 0) {
|
|
i--;
|
|
ALOGV("Looking for non-asset '%s' in '%s'\n", fileName, mAssetPaths.itemAt(i).path.string());
|
|
Asset* pAsset = openNonAssetInPathLocked(
|
|
fileName, mode, mAssetPaths.itemAt(i));
|
|
if (pAsset != NULL) {
|
|
return pAsset != kExcludedAsset ? pAsset : NULL;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
Asset* AssetManager::openNonAsset(void* cookie, const char* fileName, AccessMode mode)
|
|
{
|
|
const size_t which = ((size_t)cookie)-1;
|
|
|
|
AutoMutex _l(mLock);
|
|
|
|
LOG_FATAL_IF(mAssetPaths.size() == 0, "No assets added to AssetManager");
|
|
|
|
|
|
if (mCacheMode != CACHE_OFF && !mCacheValid)
|
|
loadFileNameCacheLocked();
|
|
|
|
if (which < mAssetPaths.size()) {
|
|
ALOGV("Looking for non-asset '%s' in '%s'\n", fileName,
|
|
mAssetPaths.itemAt(which).path.string());
|
|
Asset* pAsset = openNonAssetInPathLocked(
|
|
fileName, mode, mAssetPaths.itemAt(which));
|
|
if (pAsset != NULL) {
|
|
return pAsset != kExcludedAsset ? pAsset : NULL;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* Get the type of a file in the asset namespace.
|
|
*
|
|
* This currently only works for regular files. All others (including
|
|
* directories) will return kFileTypeNonexistent.
|
|
*/
|
|
FileType AssetManager::getFileType(const char* fileName)
|
|
{
|
|
Asset* pAsset = NULL;
|
|
|
|
/*
|
|
* Open the asset. This is less efficient than simply finding the
|
|
* file, but it's not too bad (we don't uncompress or mmap data until
|
|
* the first read() call).
|
|
*/
|
|
pAsset = open(fileName, Asset::ACCESS_STREAMING);
|
|
delete pAsset;
|
|
|
|
if (pAsset == NULL)
|
|
return kFileTypeNonexistent;
|
|
else
|
|
return kFileTypeRegular;
|
|
}
|
|
|
|
const ResTable* AssetManager::getResTable(bool required) const
|
|
{
|
|
ResTable* rt = mResources;
|
|
if (rt) {
|
|
return rt;
|
|
}
|
|
|
|
// Iterate through all asset packages, collecting resources from each.
|
|
|
|
AutoMutex _l(mLock);
|
|
|
|
if (mResources != NULL) {
|
|
return mResources;
|
|
}
|
|
|
|
if (required) {
|
|
LOG_FATAL_IF(mAssetPaths.size() == 0, "No assets added to AssetManager");
|
|
}
|
|
|
|
if (mCacheMode != CACHE_OFF && !mCacheValid)
|
|
const_cast<AssetManager*>(this)->loadFileNameCacheLocked();
|
|
|
|
const size_t N = mAssetPaths.size();
|
|
for (size_t i=0; i<N; i++) {
|
|
Asset* ass = NULL;
|
|
ResTable* sharedRes = NULL;
|
|
bool shared = true;
|
|
const asset_path& ap = mAssetPaths.itemAt(i);
|
|
MY_TRACE_BEGIN(ap.path.string());
|
|
Asset* idmap = openIdmapLocked(ap);
|
|
ALOGV("Looking for resource asset in '%s'\n", ap.path.string());
|
|
if (ap.type != kFileTypeDirectory) {
|
|
if (i == 0) {
|
|
// The first item is typically the framework resources,
|
|
// which we want to avoid parsing every time.
|
|
sharedRes = const_cast<AssetManager*>(this)->
|
|
mZipSet.getZipResourceTable(ap.path);
|
|
}
|
|
if (sharedRes == NULL) {
|
|
ass = const_cast<AssetManager*>(this)->
|
|
mZipSet.getZipResourceTableAsset(ap.path);
|
|
if (ass == NULL) {
|
|
ALOGV("loading resource table %s\n", ap.path.string());
|
|
ass = const_cast<AssetManager*>(this)->
|
|
openNonAssetInPathLocked("resources.arsc",
|
|
Asset::ACCESS_BUFFER,
|
|
ap);
|
|
if (ass != NULL && ass != kExcludedAsset) {
|
|
ass = const_cast<AssetManager*>(this)->
|
|
mZipSet.setZipResourceTableAsset(ap.path, ass);
|
|
}
|
|
}
|
|
|
|
if (i == 0 && ass != NULL) {
|
|
// If this is the first resource table in the asset
|
|
// manager, then we are going to cache it so that we
|
|
// can quickly copy it out for others.
|
|
ALOGV("Creating shared resources for %s", ap.path.string());
|
|
sharedRes = new ResTable();
|
|
sharedRes->add(ass, (void*)(i+1), false, idmap);
|
|
sharedRes = const_cast<AssetManager*>(this)->
|
|
mZipSet.setZipResourceTable(ap.path, sharedRes);
|
|
}
|
|
}
|
|
} else {
|
|
ALOGV("loading resource table %s\n", ap.path.string());
|
|
Asset* ass = const_cast<AssetManager*>(this)->
|
|
openNonAssetInPathLocked("resources.arsc",
|
|
Asset::ACCESS_BUFFER,
|
|
ap);
|
|
shared = false;
|
|
}
|
|
if ((ass != NULL || sharedRes != NULL) && ass != kExcludedAsset) {
|
|
if (rt == NULL) {
|
|
mResources = rt = new ResTable();
|
|
updateResourceParamsLocked();
|
|
}
|
|
ALOGV("Installing resource asset %p in to table %p\n", ass, mResources);
|
|
if (sharedRes != NULL) {
|
|
ALOGV("Copying existing resources for %s", ap.path.string());
|
|
rt->add(sharedRes);
|
|
} else {
|
|
ALOGV("Parsing resources for %s", ap.path.string());
|
|
rt->add(ass, (void*)(i+1), !shared, idmap);
|
|
}
|
|
|
|
if (!shared) {
|
|
delete ass;
|
|
}
|
|
}
|
|
if (idmap != NULL) {
|
|
delete idmap;
|
|
}
|
|
MY_TRACE_END();
|
|
}
|
|
|
|
if (required && !rt) ALOGW("Unable to find resources file resources.arsc");
|
|
if (!rt) {
|
|
mResources = rt = new ResTable();
|
|
}
|
|
return rt;
|
|
}
|
|
|
|
void AssetManager::updateResourceParamsLocked() const
|
|
{
|
|
ResTable* res = mResources;
|
|
if (!res) {
|
|
return;
|
|
}
|
|
|
|
size_t llen = mLocale ? strlen(mLocale) : 0;
|
|
mConfig->language[0] = 0;
|
|
mConfig->language[1] = 0;
|
|
mConfig->country[0] = 0;
|
|
mConfig->country[1] = 0;
|
|
if (llen >= 2) {
|
|
mConfig->language[0] = mLocale[0];
|
|
mConfig->language[1] = mLocale[1];
|
|
}
|
|
if (llen >= 5) {
|
|
mConfig->country[0] = mLocale[3];
|
|
mConfig->country[1] = mLocale[4];
|
|
}
|
|
mConfig->size = sizeof(*mConfig);
|
|
|
|
res->setParameters(mConfig);
|
|
}
|
|
|
|
Asset* AssetManager::openIdmapLocked(const struct asset_path& ap) const
|
|
{
|
|
Asset* ass = NULL;
|
|
if (ap.idmap.size() != 0) {
|
|
ass = const_cast<AssetManager*>(this)->
|
|
openAssetFromFileLocked(ap.idmap, Asset::ACCESS_BUFFER);
|
|
if (ass) {
|
|
ALOGV("loading idmap %s\n", ap.idmap.string());
|
|
} else {
|
|
ALOGW("failed to load idmap %s\n", ap.idmap.string());
|
|
}
|
|
}
|
|
return ass;
|
|
}
|
|
|
|
const ResTable& AssetManager::getResources(bool required) const
|
|
{
|
|
const ResTable* rt = getResTable(required);
|
|
return *rt;
|
|
}
|
|
|
|
bool AssetManager::isUpToDate()
|
|
{
|
|
AutoMutex _l(mLock);
|
|
return mZipSet.isUpToDate();
|
|
}
|
|
|
|
void AssetManager::getLocales(Vector<String8>* locales) const
|
|
{
|
|
ResTable* res = mResources;
|
|
if (res != NULL) {
|
|
res->getLocales(locales);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Open a non-asset file as if it were an asset, searching for it in the
|
|
* specified app.
|
|
*
|
|
* Pass in a NULL values for "appName" if the common app directory should
|
|
* be used.
|
|
*/
|
|
Asset* AssetManager::openNonAssetInPathLocked(const char* fileName, AccessMode mode,
|
|
const asset_path& ap)
|
|
{
|
|
Asset* pAsset = NULL;
|
|
|
|
/* look at the filesystem on disk */
|
|
if (ap.type == kFileTypeDirectory) {
|
|
String8 path(ap.path);
|
|
path.appendPath(fileName);
|
|
|
|
pAsset = openAssetFromFileLocked(path, mode);
|
|
|
|
if (pAsset == NULL) {
|
|
/* try again, this time with ".gz" */
|
|
path.append(".gz");
|
|
pAsset = openAssetFromFileLocked(path, mode);
|
|
}
|
|
|
|
if (pAsset != NULL) {
|
|
//printf("FOUND NA '%s' on disk\n", fileName);
|
|
pAsset->setAssetSource(path);
|
|
}
|
|
|
|
/* look inside the zip file */
|
|
} else {
|
|
String8 path(fileName);
|
|
|
|
/* check the appropriate Zip file */
|
|
ZipFileRO* pZip;
|
|
ZipEntryRO entry;
|
|
|
|
pZip = getZipFileLocked(ap);
|
|
if (pZip != NULL) {
|
|
//printf("GOT zip, checking NA '%s'\n", (const char*) path);
|
|
entry = pZip->findEntryByName(path.string());
|
|
if (entry != NULL) {
|
|
//printf("FOUND NA in Zip file for %s\n", appName ? appName : kAppCommon);
|
|
pAsset = openAssetFromZipLocked(pZip, entry, mode, path);
|
|
}
|
|
}
|
|
|
|
if (pAsset != NULL) {
|
|
/* create a "source" name, for debug/display */
|
|
pAsset->setAssetSource(
|
|
createZipSourceNameLocked(ZipSet::getPathName(ap.path.string()), String8(""),
|
|
String8(fileName)));
|
|
}
|
|
}
|
|
|
|
return pAsset;
|
|
}
|
|
|
|
/*
|
|
* Open an asset, searching for it in the directory hierarchy for the
|
|
* specified app.
|
|
*
|
|
* Pass in a NULL values for "appName" if the common app directory should
|
|
* be used.
|
|
*/
|
|
Asset* AssetManager::openInPathLocked(const char* fileName, AccessMode mode,
|
|
const asset_path& ap)
|
|
{
|
|
Asset* pAsset = NULL;
|
|
|
|
/*
|
|
* Try various combinations of locale and vendor.
|
|
*/
|
|
if (mLocale != NULL && mVendor != NULL)
|
|
pAsset = openInLocaleVendorLocked(fileName, mode, ap, mLocale, mVendor);
|
|
if (pAsset == NULL && mVendor != NULL)
|
|
pAsset = openInLocaleVendorLocked(fileName, mode, ap, NULL, mVendor);
|
|
if (pAsset == NULL && mLocale != NULL)
|
|
pAsset = openInLocaleVendorLocked(fileName, mode, ap, mLocale, NULL);
|
|
if (pAsset == NULL)
|
|
pAsset = openInLocaleVendorLocked(fileName, mode, ap, NULL, NULL);
|
|
|
|
return pAsset;
|
|
}
|
|
|
|
/*
|
|
* Open an asset, searching for it in the directory hierarchy for the
|
|
* specified locale and vendor.
|
|
*
|
|
* We also search in "app.jar".
|
|
*
|
|
* Pass in NULL values for "appName", "locale", and "vendor" if the
|
|
* defaults should be used.
|
|
*/
|
|
Asset* AssetManager::openInLocaleVendorLocked(const char* fileName, AccessMode mode,
|
|
const asset_path& ap, const char* locale, const char* vendor)
|
|
{
|
|
Asset* pAsset = NULL;
|
|
|
|
if (ap.type == kFileTypeDirectory) {
|
|
if (mCacheMode == CACHE_OFF) {
|
|
/* look at the filesystem on disk */
|
|
String8 path(createPathNameLocked(ap, locale, vendor));
|
|
path.appendPath(fileName);
|
|
|
|
String8 excludeName(path);
|
|
excludeName.append(kExcludeExtension);
|
|
if (::getFileType(excludeName.string()) != kFileTypeNonexistent) {
|
|
/* say no more */
|
|
//printf("+++ excluding '%s'\n", (const char*) excludeName);
|
|
return kExcludedAsset;
|
|
}
|
|
|
|
pAsset = openAssetFromFileLocked(path, mode);
|
|
|
|
if (pAsset == NULL) {
|
|
/* try again, this time with ".gz" */
|
|
path.append(".gz");
|
|
pAsset = openAssetFromFileLocked(path, mode);
|
|
}
|
|
|
|
if (pAsset != NULL)
|
|
pAsset->setAssetSource(path);
|
|
} else {
|
|
/* find in cache */
|
|
String8 path(createPathNameLocked(ap, locale, vendor));
|
|
path.appendPath(fileName);
|
|
|
|
AssetDir::FileInfo tmpInfo;
|
|
bool found = false;
|
|
|
|
String8 excludeName(path);
|
|
excludeName.append(kExcludeExtension);
|
|
|
|
if (mCache.indexOf(excludeName) != NAME_NOT_FOUND) {
|
|
/* go no farther */
|
|
//printf("+++ Excluding '%s'\n", (const char*) excludeName);
|
|
return kExcludedAsset;
|
|
}
|
|
|
|
/*
|
|
* File compression extensions (".gz") don't get stored in the
|
|
* name cache, so we have to try both here.
|
|
*/
|
|
if (mCache.indexOf(path) != NAME_NOT_FOUND) {
|
|
found = true;
|
|
pAsset = openAssetFromFileLocked(path, mode);
|
|
if (pAsset == NULL) {
|
|
/* try again, this time with ".gz" */
|
|
path.append(".gz");
|
|
pAsset = openAssetFromFileLocked(path, mode);
|
|
}
|
|
}
|
|
|
|
if (pAsset != NULL)
|
|
pAsset->setAssetSource(path);
|
|
|
|
/*
|
|
* Don't continue the search into the Zip files. Our cached info
|
|
* said it was a file on disk; to be consistent with openDir()
|
|
* we want to return the loose asset. If the cached file gets
|
|
* removed, we fail.
|
|
*
|
|
* The alternative is to update our cache when files get deleted,
|
|
* or make some sort of "best effort" promise, but for now I'm
|
|
* taking the hard line.
|
|
*/
|
|
if (found) {
|
|
if (pAsset == NULL)
|
|
ALOGD("Expected file not found: '%s'\n", path.string());
|
|
return pAsset;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Either it wasn't found on disk or on the cached view of the disk.
|
|
* Dig through the currently-opened set of Zip files. If caching
|
|
* is disabled, the Zip file may get reopened.
|
|
*/
|
|
if (pAsset == NULL && ap.type == kFileTypeRegular) {
|
|
String8 path;
|
|
|
|
path.appendPath((locale != NULL) ? locale : kDefaultLocale);
|
|
path.appendPath((vendor != NULL) ? vendor : kDefaultVendor);
|
|
path.appendPath(fileName);
|
|
|
|
/* check the appropriate Zip file */
|
|
ZipFileRO* pZip;
|
|
ZipEntryRO entry;
|
|
|
|
pZip = getZipFileLocked(ap);
|
|
if (pZip != NULL) {
|
|
//printf("GOT zip, checking '%s'\n", (const char*) path);
|
|
entry = pZip->findEntryByName(path.string());
|
|
if (entry != NULL) {
|
|
//printf("FOUND in Zip file for %s/%s-%s\n",
|
|
// appName, locale, vendor);
|
|
pAsset = openAssetFromZipLocked(pZip, entry, mode, path);
|
|
}
|
|
}
|
|
|
|
if (pAsset != NULL) {
|
|
/* create a "source" name, for debug/display */
|
|
pAsset->setAssetSource(createZipSourceNameLocked(ZipSet::getPathName(ap.path.string()),
|
|
String8(""), String8(fileName)));
|
|
}
|
|
}
|
|
|
|
return pAsset;
|
|
}
|
|
|
|
/*
|
|
* Create a "source name" for a file from a Zip archive.
|
|
*/
|
|
String8 AssetManager::createZipSourceNameLocked(const String8& zipFileName,
|
|
const String8& dirName, const String8& fileName)
|
|
{
|
|
String8 sourceName("zip:");
|
|
sourceName.append(zipFileName);
|
|
sourceName.append(":");
|
|
if (dirName.length() > 0) {
|
|
sourceName.appendPath(dirName);
|
|
}
|
|
sourceName.appendPath(fileName);
|
|
return sourceName;
|
|
}
|
|
|
|
/*
|
|
* Create a path to a loose asset (asset-base/app/locale/vendor).
|
|
*/
|
|
String8 AssetManager::createPathNameLocked(const asset_path& ap, const char* locale,
|
|
const char* vendor)
|
|
{
|
|
String8 path(ap.path);
|
|
path.appendPath((locale != NULL) ? locale : kDefaultLocale);
|
|
path.appendPath((vendor != NULL) ? vendor : kDefaultVendor);
|
|
return path;
|
|
}
|
|
|
|
/*
|
|
* Create a path to a loose asset (asset-base/app/rootDir).
|
|
*/
|
|
String8 AssetManager::createPathNameLocked(const asset_path& ap, const char* rootDir)
|
|
{
|
|
String8 path(ap.path);
|
|
if (rootDir != NULL) path.appendPath(rootDir);
|
|
return path;
|
|
}
|
|
|
|
/*
|
|
* Return a pointer to one of our open Zip archives. Returns NULL if no
|
|
* matching Zip file exists.
|
|
*
|
|
* Right now we have 2 possible Zip files (1 each in app/"common").
|
|
*
|
|
* If caching is set to CACHE_OFF, to get the expected behavior we
|
|
* need to reopen the Zip file on every request. That would be silly
|
|
* and expensive, so instead we just check the file modification date.
|
|
*
|
|
* Pass in NULL values for "appName", "locale", and "vendor" if the
|
|
* generics should be used.
|
|
*/
|
|
ZipFileRO* AssetManager::getZipFileLocked(const asset_path& ap)
|
|
{
|
|
ALOGV("getZipFileLocked() in %p\n", this);
|
|
|
|
return mZipSet.getZip(ap.path);
|
|
}
|
|
|
|
/*
|
|
* Try to open an asset from a file on disk.
|
|
*
|
|
* If the file is compressed with gzip, we seek to the start of the
|
|
* deflated data and pass that in (just like we would for a Zip archive).
|
|
*
|
|
* For uncompressed data, we may already have an mmap()ed version sitting
|
|
* around. If so, we want to hand that to the Asset instead.
|
|
*
|
|
* This returns NULL if the file doesn't exist, couldn't be opened, or
|
|
* claims to be a ".gz" but isn't.
|
|
*/
|
|
Asset* AssetManager::openAssetFromFileLocked(const String8& pathName,
|
|
AccessMode mode)
|
|
{
|
|
Asset* pAsset = NULL;
|
|
|
|
if (strcasecmp(pathName.getPathExtension().string(), ".gz") == 0) {
|
|
//printf("TRYING '%s'\n", (const char*) pathName);
|
|
pAsset = Asset::createFromCompressedFile(pathName.string(), mode);
|
|
} else {
|
|
//printf("TRYING '%s'\n", (const char*) pathName);
|
|
pAsset = Asset::createFromFile(pathName.string(), mode);
|
|
}
|
|
|
|
return pAsset;
|
|
}
|
|
|
|
/*
|
|
* Given an entry in a Zip archive, create a new Asset object.
|
|
*
|
|
* If the entry is uncompressed, we may want to create or share a
|
|
* slice of shared memory.
|
|
*/
|
|
Asset* AssetManager::openAssetFromZipLocked(const ZipFileRO* pZipFile,
|
|
const ZipEntryRO entry, AccessMode mode, const String8& entryName)
|
|
{
|
|
Asset* pAsset = NULL;
|
|
|
|
// TODO: look for previously-created shared memory slice?
|
|
int method;
|
|
size_t uncompressedLen;
|
|
|
|
//printf("USING Zip '%s'\n", pEntry->getFileName());
|
|
|
|
//pZipFile->getEntryInfo(entry, &method, &uncompressedLen, &compressedLen,
|
|
// &offset);
|
|
if (!pZipFile->getEntryInfo(entry, &method, &uncompressedLen, NULL, NULL,
|
|
NULL, NULL))
|
|
{
|
|
ALOGW("getEntryInfo failed\n");
|
|
return NULL;
|
|
}
|
|
|
|
FileMap* dataMap = pZipFile->createEntryFileMap(entry);
|
|
if (dataMap == NULL) {
|
|
ALOGW("create map from entry failed\n");
|
|
return NULL;
|
|
}
|
|
|
|
if (method == ZipFileRO::kCompressStored) {
|
|
pAsset = Asset::createFromUncompressedMap(dataMap, mode);
|
|
ALOGV("Opened uncompressed entry %s in zip %s mode %d: %p", entryName.string(),
|
|
dataMap->getFileName(), mode, pAsset);
|
|
} else {
|
|
pAsset = Asset::createFromCompressedMap(dataMap, method,
|
|
uncompressedLen, mode);
|
|
ALOGV("Opened compressed entry %s in zip %s mode %d: %p", entryName.string(),
|
|
dataMap->getFileName(), mode, pAsset);
|
|
}
|
|
if (pAsset == NULL) {
|
|
/* unexpected */
|
|
ALOGW("create from segment failed\n");
|
|
}
|
|
|
|
return pAsset;
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* Open a directory in the asset namespace.
|
|
*
|
|
* An "asset directory" is simply the combination of all files in all
|
|
* locations, with ".gz" stripped for loose files. With app, locale, and
|
|
* vendor defined, we have 8 directories and 2 Zip archives to scan.
|
|
*
|
|
* Pass in "" for the root dir.
|
|
*/
|
|
AssetDir* AssetManager::openDir(const char* dirName)
|
|
{
|
|
AutoMutex _l(mLock);
|
|
|
|
AssetDir* pDir = NULL;
|
|
SortedVector<AssetDir::FileInfo>* pMergedInfo = NULL;
|
|
|
|
LOG_FATAL_IF(mAssetPaths.size() == 0, "No assets added to AssetManager");
|
|
assert(dirName != NULL);
|
|
|
|
//printf("+++ openDir(%s) in '%s'\n", dirName, (const char*) mAssetBase);
|
|
|
|
if (mCacheMode != CACHE_OFF && !mCacheValid)
|
|
loadFileNameCacheLocked();
|
|
|
|
pDir = new AssetDir;
|
|
|
|
/*
|
|
* Scan the various directories, merging what we find into a single
|
|
* vector. We want to scan them in reverse priority order so that
|
|
* the ".EXCLUDE" processing works correctly. Also, if we decide we
|
|
* want to remember where the file is coming from, we'll get the right
|
|
* version.
|
|
*
|
|
* We start with Zip archives, then do loose files.
|
|
*/
|
|
pMergedInfo = new SortedVector<AssetDir::FileInfo>;
|
|
|
|
size_t i = mAssetPaths.size();
|
|
while (i > 0) {
|
|
i--;
|
|
const asset_path& ap = mAssetPaths.itemAt(i);
|
|
if (ap.type == kFileTypeRegular) {
|
|
ALOGV("Adding directory %s from zip %s", dirName, ap.path.string());
|
|
scanAndMergeZipLocked(pMergedInfo, ap, kAssetsRoot, dirName);
|
|
} else {
|
|
ALOGV("Adding directory %s from dir %s", dirName, ap.path.string());
|
|
scanAndMergeDirLocked(pMergedInfo, ap, kAssetsRoot, dirName);
|
|
}
|
|
}
|
|
|
|
#if 0
|
|
printf("FILE LIST:\n");
|
|
for (i = 0; i < (size_t) pMergedInfo->size(); i++) {
|
|
printf(" %d: (%d) '%s'\n", i,
|
|
pMergedInfo->itemAt(i).getFileType(),
|
|
(const char*) pMergedInfo->itemAt(i).getFileName());
|
|
}
|
|
#endif
|
|
|
|
pDir->setFileList(pMergedInfo);
|
|
return pDir;
|
|
}
|
|
|
|
/*
|
|
* Open a directory in the non-asset namespace.
|
|
*
|
|
* An "asset directory" is simply the combination of all files in all
|
|
* locations, with ".gz" stripped for loose files. With app, locale, and
|
|
* vendor defined, we have 8 directories and 2 Zip archives to scan.
|
|
*
|
|
* Pass in "" for the root dir.
|
|
*/
|
|
AssetDir* AssetManager::openNonAssetDir(void* cookie, const char* dirName)
|
|
{
|
|
AutoMutex _l(mLock);
|
|
|
|
AssetDir* pDir = NULL;
|
|
SortedVector<AssetDir::FileInfo>* pMergedInfo = NULL;
|
|
|
|
LOG_FATAL_IF(mAssetPaths.size() == 0, "No assets added to AssetManager");
|
|
assert(dirName != NULL);
|
|
|
|
//printf("+++ openDir(%s) in '%s'\n", dirName, (const char*) mAssetBase);
|
|
|
|
if (mCacheMode != CACHE_OFF && !mCacheValid)
|
|
loadFileNameCacheLocked();
|
|
|
|
pDir = new AssetDir;
|
|
|
|
pMergedInfo = new SortedVector<AssetDir::FileInfo>;
|
|
|
|
const size_t which = ((size_t)cookie)-1;
|
|
|
|
if (which < mAssetPaths.size()) {
|
|
const asset_path& ap = mAssetPaths.itemAt(which);
|
|
if (ap.type == kFileTypeRegular) {
|
|
ALOGV("Adding directory %s from zip %s", dirName, ap.path.string());
|
|
scanAndMergeZipLocked(pMergedInfo, ap, NULL, dirName);
|
|
} else {
|
|
ALOGV("Adding directory %s from dir %s", dirName, ap.path.string());
|
|
scanAndMergeDirLocked(pMergedInfo, ap, NULL, dirName);
|
|
}
|
|
}
|
|
|
|
#if 0
|
|
printf("FILE LIST:\n");
|
|
for (i = 0; i < (size_t) pMergedInfo->size(); i++) {
|
|
printf(" %d: (%d) '%s'\n", i,
|
|
pMergedInfo->itemAt(i).getFileType(),
|
|
(const char*) pMergedInfo->itemAt(i).getFileName());
|
|
}
|
|
#endif
|
|
|
|
pDir->setFileList(pMergedInfo);
|
|
return pDir;
|
|
}
|
|
|
|
/*
|
|
* Scan the contents of the specified directory and merge them into the
|
|
* "pMergedInfo" vector, removing previous entries if we find "exclude"
|
|
* directives.
|
|
*
|
|
* Returns "false" if we found nothing to contribute.
|
|
*/
|
|
bool AssetManager::scanAndMergeDirLocked(SortedVector<AssetDir::FileInfo>* pMergedInfo,
|
|
const asset_path& ap, const char* rootDir, const char* dirName)
|
|
{
|
|
SortedVector<AssetDir::FileInfo>* pContents;
|
|
String8 path;
|
|
|
|
assert(pMergedInfo != NULL);
|
|
|
|
//printf("scanAndMergeDir: %s %s %s %s\n", appName, locale, vendor,dirName);
|
|
|
|
if (mCacheValid) {
|
|
int i, start, count;
|
|
|
|
pContents = new SortedVector<AssetDir::FileInfo>;
|
|
|
|
/*
|
|
* Get the basic partial path and find it in the cache. That's
|
|
* the start point for the search.
|
|
*/
|
|
path = createPathNameLocked(ap, rootDir);
|
|
if (dirName[0] != '\0')
|
|
path.appendPath(dirName);
|
|
|
|
start = mCache.indexOf(path);
|
|
if (start == NAME_NOT_FOUND) {
|
|
//printf("+++ not found in cache: dir '%s'\n", (const char*) path);
|
|
delete pContents;
|
|
return false;
|
|
}
|
|
|
|
/*
|
|
* The match string looks like "common/default/default/foo/bar/".
|
|
* The '/' on the end ensures that we don't match on the directory
|
|
* itself or on ".../foo/barfy/".
|
|
*/
|
|
path.append("/");
|
|
|
|
count = mCache.size();
|
|
|
|
/*
|
|
* Pick out the stuff in the current dir by examining the pathname.
|
|
* It needs to match the partial pathname prefix, and not have a '/'
|
|
* (fssep) anywhere after the prefix.
|
|
*/
|
|
for (i = start+1; i < count; i++) {
|
|
if (mCache[i].getFileName().length() > path.length() &&
|
|
strncmp(mCache[i].getFileName().string(), path.string(), path.length()) == 0)
|
|
{
|
|
const char* name = mCache[i].getFileName().string();
|
|
// XXX THIS IS BROKEN! Looks like we need to store the full
|
|
// path prefix separately from the file path.
|
|
if (strchr(name + path.length(), '/') == NULL) {
|
|
/* grab it, reducing path to just the filename component */
|
|
AssetDir::FileInfo tmp = mCache[i];
|
|
tmp.setFileName(tmp.getFileName().getPathLeaf());
|
|
pContents->add(tmp);
|
|
}
|
|
} else {
|
|
/* no longer in the dir or its subdirs */
|
|
break;
|
|
}
|
|
|
|
}
|
|
} else {
|
|
path = createPathNameLocked(ap, rootDir);
|
|
if (dirName[0] != '\0')
|
|
path.appendPath(dirName);
|
|
pContents = scanDirLocked(path);
|
|
if (pContents == NULL)
|
|
return false;
|
|
}
|
|
|
|
// if we wanted to do an incremental cache fill, we would do it here
|
|
|
|
/*
|
|
* Process "exclude" directives. If we find a filename that ends with
|
|
* ".EXCLUDE", we look for a matching entry in the "merged" set, and
|
|
* remove it if we find it. We also delete the "exclude" entry.
|
|
*/
|
|
int i, count, exclExtLen;
|
|
|
|
count = pContents->size();
|
|
exclExtLen = strlen(kExcludeExtension);
|
|
for (i = 0; i < count; i++) {
|
|
const char* name;
|
|
int nameLen;
|
|
|
|
name = pContents->itemAt(i).getFileName().string();
|
|
nameLen = strlen(name);
|
|
if (nameLen > exclExtLen &&
|
|
strcmp(name + (nameLen - exclExtLen), kExcludeExtension) == 0)
|
|
{
|
|
String8 match(name, nameLen - exclExtLen);
|
|
int matchIdx;
|
|
|
|
matchIdx = AssetDir::FileInfo::findEntry(pMergedInfo, match);
|
|
if (matchIdx > 0) {
|
|
ALOGV("Excluding '%s' [%s]\n",
|
|
pMergedInfo->itemAt(matchIdx).getFileName().string(),
|
|
pMergedInfo->itemAt(matchIdx).getSourceName().string());
|
|
pMergedInfo->removeAt(matchIdx);
|
|
} else {
|
|
//printf("+++ no match on '%s'\n", (const char*) match);
|
|
}
|
|
|
|
ALOGD("HEY: size=%d removing %d\n", (int)pContents->size(), i);
|
|
pContents->removeAt(i);
|
|
i--; // adjust "for" loop
|
|
count--; // and loop limit
|
|
}
|
|
}
|
|
|
|
mergeInfoLocked(pMergedInfo, pContents);
|
|
|
|
delete pContents;
|
|
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
* Scan the contents of the specified directory, and stuff what we find
|
|
* into a newly-allocated vector.
|
|
*
|
|
* Files ending in ".gz" will have their extensions removed.
|
|
*
|
|
* We should probably think about skipping files with "illegal" names,
|
|
* e.g. illegal characters (/\:) or excessive length.
|
|
*
|
|
* Returns NULL if the specified directory doesn't exist.
|
|
*/
|
|
SortedVector<AssetDir::FileInfo>* AssetManager::scanDirLocked(const String8& path)
|
|
{
|
|
SortedVector<AssetDir::FileInfo>* pContents = NULL;
|
|
DIR* dir;
|
|
struct dirent* entry;
|
|
FileType fileType;
|
|
|
|
ALOGV("Scanning dir '%s'\n", path.string());
|
|
|
|
dir = opendir(path.string());
|
|
if (dir == NULL)
|
|
return NULL;
|
|
|
|
pContents = new SortedVector<AssetDir::FileInfo>;
|
|
|
|
while (1) {
|
|
entry = readdir(dir);
|
|
if (entry == NULL)
|
|
break;
|
|
|
|
if (strcmp(entry->d_name, ".") == 0 ||
|
|
strcmp(entry->d_name, "..") == 0)
|
|
continue;
|
|
|
|
#ifdef _DIRENT_HAVE_D_TYPE
|
|
if (entry->d_type == DT_REG)
|
|
fileType = kFileTypeRegular;
|
|
else if (entry->d_type == DT_DIR)
|
|
fileType = kFileTypeDirectory;
|
|
else
|
|
fileType = kFileTypeUnknown;
|
|
#else
|
|
// stat the file
|
|
fileType = ::getFileType(path.appendPathCopy(entry->d_name).string());
|
|
#endif
|
|
|
|
if (fileType != kFileTypeRegular && fileType != kFileTypeDirectory)
|
|
continue;
|
|
|
|
AssetDir::FileInfo info;
|
|
info.set(String8(entry->d_name), fileType);
|
|
if (strcasecmp(info.getFileName().getPathExtension().string(), ".gz") == 0)
|
|
info.setFileName(info.getFileName().getBasePath());
|
|
info.setSourceName(path.appendPathCopy(info.getFileName()));
|
|
pContents->add(info);
|
|
}
|
|
|
|
closedir(dir);
|
|
return pContents;
|
|
}
|
|
|
|
/*
|
|
* Scan the contents out of the specified Zip archive, and merge what we
|
|
* find into "pMergedInfo". If the Zip archive in question doesn't exist,
|
|
* we return immediately.
|
|
*
|
|
* Returns "false" if we found nothing to contribute.
|
|
*/
|
|
bool AssetManager::scanAndMergeZipLocked(SortedVector<AssetDir::FileInfo>* pMergedInfo,
|
|
const asset_path& ap, const char* rootDir, const char* baseDirName)
|
|
{
|
|
ZipFileRO* pZip;
|
|
Vector<String8> dirs;
|
|
AssetDir::FileInfo info;
|
|
SortedVector<AssetDir::FileInfo> contents;
|
|
String8 sourceName, zipName, dirName;
|
|
|
|
pZip = mZipSet.getZip(ap.path);
|
|
if (pZip == NULL) {
|
|
ALOGW("Failure opening zip %s\n", ap.path.string());
|
|
return false;
|
|
}
|
|
|
|
zipName = ZipSet::getPathName(ap.path.string());
|
|
|
|
/* convert "sounds" to "rootDir/sounds" */
|
|
if (rootDir != NULL) dirName = rootDir;
|
|
dirName.appendPath(baseDirName);
|
|
|
|
/*
|
|
* Scan through the list of files, looking for a match. The files in
|
|
* the Zip table of contents are not in sorted order, so we have to
|
|
* process the entire list. We're looking for a string that begins
|
|
* with the characters in "dirName", is followed by a '/', and has no
|
|
* subsequent '/' in the stuff that follows.
|
|
*
|
|
* What makes this especially fun is that directories are not stored
|
|
* explicitly in Zip archives, so we have to infer them from context.
|
|
* When we see "sounds/foo.wav" we have to leave a note to ourselves
|
|
* to insert a directory called "sounds" into the list. We store
|
|
* these in temporary vector so that we only return each one once.
|
|
*
|
|
* Name comparisons are case-sensitive to match UNIX filesystem
|
|
* semantics.
|
|
*/
|
|
int dirNameLen = dirName.length();
|
|
for (int i = 0; i < pZip->getNumEntries(); i++) {
|
|
ZipEntryRO entry;
|
|
char nameBuf[256];
|
|
|
|
entry = pZip->findEntryByIndex(i);
|
|
if (pZip->getEntryFileName(entry, nameBuf, sizeof(nameBuf)) != 0) {
|
|
// TODO: fix this if we expect to have long names
|
|
ALOGE("ARGH: name too long?\n");
|
|
continue;
|
|
}
|
|
//printf("Comparing %s in %s?\n", nameBuf, dirName.string());
|
|
if (dirNameLen == 0 ||
|
|
(strncmp(nameBuf, dirName.string(), dirNameLen) == 0 &&
|
|
nameBuf[dirNameLen] == '/'))
|
|
{
|
|
const char* cp;
|
|
const char* nextSlash;
|
|
|
|
cp = nameBuf + dirNameLen;
|
|
if (dirNameLen != 0)
|
|
cp++; // advance past the '/'
|
|
|
|
nextSlash = strchr(cp, '/');
|
|
//xxx this may break if there are bare directory entries
|
|
if (nextSlash == NULL) {
|
|
/* this is a file in the requested directory */
|
|
|
|
info.set(String8(nameBuf).getPathLeaf(), kFileTypeRegular);
|
|
|
|
info.setSourceName(
|
|
createZipSourceNameLocked(zipName, dirName, info.getFileName()));
|
|
|
|
contents.add(info);
|
|
//printf("FOUND: file '%s'\n", info.getFileName().string());
|
|
} else {
|
|
/* this is a subdir; add it if we don't already have it*/
|
|
String8 subdirName(cp, nextSlash - cp);
|
|
size_t j;
|
|
size_t N = dirs.size();
|
|
|
|
for (j = 0; j < N; j++) {
|
|
if (subdirName == dirs[j]) {
|
|
break;
|
|
}
|
|
}
|
|
if (j == N) {
|
|
dirs.add(subdirName);
|
|
}
|
|
|
|
//printf("FOUND: dir '%s'\n", subdirName.string());
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Add the set of unique directories.
|
|
*/
|
|
for (int i = 0; i < (int) dirs.size(); i++) {
|
|
info.set(dirs[i], kFileTypeDirectory);
|
|
info.setSourceName(
|
|
createZipSourceNameLocked(zipName, dirName, info.getFileName()));
|
|
contents.add(info);
|
|
}
|
|
|
|
mergeInfoLocked(pMergedInfo, &contents);
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
/*
|
|
* Merge two vectors of FileInfo.
|
|
*
|
|
* The merged contents will be stuffed into *pMergedInfo.
|
|
*
|
|
* If an entry for a file exists in both "pMergedInfo" and "pContents",
|
|
* we use the newer "pContents" entry.
|
|
*/
|
|
void AssetManager::mergeInfoLocked(SortedVector<AssetDir::FileInfo>* pMergedInfo,
|
|
const SortedVector<AssetDir::FileInfo>* pContents)
|
|
{
|
|
/*
|
|
* Merge what we found in this directory with what we found in
|
|
* other places.
|
|
*
|
|
* Two basic approaches:
|
|
* (1) Create a new array that holds the unique values of the two
|
|
* arrays.
|
|
* (2) Take the elements from pContents and shove them into pMergedInfo.
|
|
*
|
|
* Because these are vectors of complex objects, moving elements around
|
|
* inside the vector requires constructing new objects and allocating
|
|
* storage for members. With approach #1, we're always adding to the
|
|
* end, whereas with #2 we could be inserting multiple elements at the
|
|
* front of the vector. Approach #1 requires a full copy of the
|
|
* contents of pMergedInfo, but approach #2 requires the same copy for
|
|
* every insertion at the front of pMergedInfo.
|
|
*
|
|
* (We should probably use a SortedVector interface that allows us to
|
|
* just stuff items in, trusting us to maintain the sort order.)
|
|
*/
|
|
SortedVector<AssetDir::FileInfo>* pNewSorted;
|
|
int mergeMax, contMax;
|
|
int mergeIdx, contIdx;
|
|
|
|
pNewSorted = new SortedVector<AssetDir::FileInfo>;
|
|
mergeMax = pMergedInfo->size();
|
|
contMax = pContents->size();
|
|
mergeIdx = contIdx = 0;
|
|
|
|
while (mergeIdx < mergeMax || contIdx < contMax) {
|
|
if (mergeIdx == mergeMax) {
|
|
/* hit end of "merge" list, copy rest of "contents" */
|
|
pNewSorted->add(pContents->itemAt(contIdx));
|
|
contIdx++;
|
|
} else if (contIdx == contMax) {
|
|
/* hit end of "cont" list, copy rest of "merge" */
|
|
pNewSorted->add(pMergedInfo->itemAt(mergeIdx));
|
|
mergeIdx++;
|
|
} else if (pMergedInfo->itemAt(mergeIdx) == pContents->itemAt(contIdx))
|
|
{
|
|
/* items are identical, add newer and advance both indices */
|
|
pNewSorted->add(pContents->itemAt(contIdx));
|
|
mergeIdx++;
|
|
contIdx++;
|
|
} else if (pMergedInfo->itemAt(mergeIdx) < pContents->itemAt(contIdx))
|
|
{
|
|
/* "merge" is lower, add that one */
|
|
pNewSorted->add(pMergedInfo->itemAt(mergeIdx));
|
|
mergeIdx++;
|
|
} else {
|
|
/* "cont" is lower, add that one */
|
|
assert(pContents->itemAt(contIdx) < pMergedInfo->itemAt(mergeIdx));
|
|
pNewSorted->add(pContents->itemAt(contIdx));
|
|
contIdx++;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Overwrite the "merged" list with the new stuff.
|
|
*/
|
|
*pMergedInfo = *pNewSorted;
|
|
delete pNewSorted;
|
|
|
|
#if 0 // for Vector, rather than SortedVector
|
|
int i, j;
|
|
for (i = pContents->size() -1; i >= 0; i--) {
|
|
bool add = true;
|
|
|
|
for (j = pMergedInfo->size() -1; j >= 0; j--) {
|
|
/* case-sensitive comparisons, to behave like UNIX fs */
|
|
if (strcmp(pContents->itemAt(i).mFileName,
|
|
pMergedInfo->itemAt(j).mFileName) == 0)
|
|
{
|
|
/* match, don't add this entry */
|
|
add = false;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (add)
|
|
pMergedInfo->add(pContents->itemAt(i));
|
|
}
|
|
#endif
|
|
}
|
|
|
|
|
|
/*
|
|
* Load all files into the file name cache. We want to do this across
|
|
* all combinations of { appname, locale, vendor }, performing a recursive
|
|
* directory traversal.
|
|
*
|
|
* This is not the most efficient data structure. Also, gathering the
|
|
* information as we needed it (file-by-file or directory-by-directory)
|
|
* would be faster. However, on the actual device, 99% of the files will
|
|
* live in Zip archives, so this list will be very small. The trouble
|
|
* is that we have to check the "loose" files first, so it's important
|
|
* that we don't beat the filesystem silly looking for files that aren't
|
|
* there.
|
|
*
|
|
* Note on thread safety: this is the only function that causes updates
|
|
* to mCache, and anybody who tries to use it will call here if !mCacheValid,
|
|
* so we need to employ a mutex here.
|
|
*/
|
|
void AssetManager::loadFileNameCacheLocked(void)
|
|
{
|
|
assert(!mCacheValid);
|
|
assert(mCache.size() == 0);
|
|
|
|
#ifdef DO_TIMINGS // need to link against -lrt for this now
|
|
DurationTimer timer;
|
|
timer.start();
|
|
#endif
|
|
|
|
fncScanLocked(&mCache, "");
|
|
|
|
#ifdef DO_TIMINGS
|
|
timer.stop();
|
|
ALOGD("Cache scan took %.3fms\n",
|
|
timer.durationUsecs() / 1000.0);
|
|
#endif
|
|
|
|
#if 0
|
|
int i;
|
|
printf("CACHED FILE LIST (%d entries):\n", mCache.size());
|
|
for (i = 0; i < (int) mCache.size(); i++) {
|
|
printf(" %d: (%d) '%s'\n", i,
|
|
mCache.itemAt(i).getFileType(),
|
|
(const char*) mCache.itemAt(i).getFileName());
|
|
}
|
|
#endif
|
|
|
|
mCacheValid = true;
|
|
}
|
|
|
|
/*
|
|
* Scan up to 8 versions of the specified directory.
|
|
*/
|
|
void AssetManager::fncScanLocked(SortedVector<AssetDir::FileInfo>* pMergedInfo,
|
|
const char* dirName)
|
|
{
|
|
size_t i = mAssetPaths.size();
|
|
while (i > 0) {
|
|
i--;
|
|
const asset_path& ap = mAssetPaths.itemAt(i);
|
|
fncScanAndMergeDirLocked(pMergedInfo, ap, NULL, NULL, dirName);
|
|
if (mLocale != NULL)
|
|
fncScanAndMergeDirLocked(pMergedInfo, ap, mLocale, NULL, dirName);
|
|
if (mVendor != NULL)
|
|
fncScanAndMergeDirLocked(pMergedInfo, ap, NULL, mVendor, dirName);
|
|
if (mLocale != NULL && mVendor != NULL)
|
|
fncScanAndMergeDirLocked(pMergedInfo, ap, mLocale, mVendor, dirName);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Recursively scan this directory and all subdirs.
|
|
*
|
|
* This is similar to scanAndMergeDir, but we don't remove the .EXCLUDE
|
|
* files, and we prepend the extended partial path to the filenames.
|
|
*/
|
|
bool AssetManager::fncScanAndMergeDirLocked(
|
|
SortedVector<AssetDir::FileInfo>* pMergedInfo,
|
|
const asset_path& ap, const char* locale, const char* vendor,
|
|
const char* dirName)
|
|
{
|
|
SortedVector<AssetDir::FileInfo>* pContents;
|
|
String8 partialPath;
|
|
String8 fullPath;
|
|
|
|
// XXX This is broken -- the filename cache needs to hold the base
|
|
// asset path separately from its filename.
|
|
|
|
partialPath = createPathNameLocked(ap, locale, vendor);
|
|
if (dirName[0] != '\0') {
|
|
partialPath.appendPath(dirName);
|
|
}
|
|
|
|
fullPath = partialPath;
|
|
pContents = scanDirLocked(fullPath);
|
|
if (pContents == NULL) {
|
|
return false; // directory did not exist
|
|
}
|
|
|
|
/*
|
|
* Scan all subdirectories of the current dir, merging what we find
|
|
* into "pMergedInfo".
|
|
*/
|
|
for (int i = 0; i < (int) pContents->size(); i++) {
|
|
if (pContents->itemAt(i).getFileType() == kFileTypeDirectory) {
|
|
String8 subdir(dirName);
|
|
subdir.appendPath(pContents->itemAt(i).getFileName());
|
|
|
|
fncScanAndMergeDirLocked(pMergedInfo, ap, locale, vendor, subdir.string());
|
|
}
|
|
}
|
|
|
|
/*
|
|
* To be consistent, we want entries for the root directory. If
|
|
* we're the root, add one now.
|
|
*/
|
|
if (dirName[0] == '\0') {
|
|
AssetDir::FileInfo tmpInfo;
|
|
|
|
tmpInfo.set(String8(""), kFileTypeDirectory);
|
|
tmpInfo.setSourceName(createPathNameLocked(ap, locale, vendor));
|
|
pContents->add(tmpInfo);
|
|
}
|
|
|
|
/*
|
|
* We want to prepend the extended partial path to every entry in
|
|
* "pContents". It's the same value for each entry, so this will
|
|
* not change the sorting order of the vector contents.
|
|
*/
|
|
for (int i = 0; i < (int) pContents->size(); i++) {
|
|
const AssetDir::FileInfo& info = pContents->itemAt(i);
|
|
pContents->editItemAt(i).setFileName(partialPath.appendPathCopy(info.getFileName()));
|
|
}
|
|
|
|
mergeInfoLocked(pMergedInfo, pContents);
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
* Trash the cache.
|
|
*/
|
|
void AssetManager::purgeFileNameCacheLocked(void)
|
|
{
|
|
mCacheValid = false;
|
|
mCache.clear();
|
|
}
|
|
|
|
/*
|
|
* ===========================================================================
|
|
* AssetManager::SharedZip
|
|
* ===========================================================================
|
|
*/
|
|
|
|
|
|
Mutex AssetManager::SharedZip::gLock;
|
|
DefaultKeyedVector<String8, wp<AssetManager::SharedZip> > AssetManager::SharedZip::gOpen;
|
|
|
|
AssetManager::SharedZip::SharedZip(const String8& path, time_t modWhen)
|
|
: mPath(path), mZipFile(NULL), mModWhen(modWhen),
|
|
mResourceTableAsset(NULL), mResourceTable(NULL)
|
|
{
|
|
//ALOGI("Creating SharedZip %p %s\n", this, (const char*)mPath);
|
|
mZipFile = new ZipFileRO;
|
|
ALOGV("+++ opening zip '%s'\n", mPath.string());
|
|
if (mZipFile->open(mPath.string()) != NO_ERROR) {
|
|
ALOGD("failed to open Zip archive '%s'\n", mPath.string());
|
|
delete mZipFile;
|
|
mZipFile = NULL;
|
|
}
|
|
}
|
|
|
|
sp<AssetManager::SharedZip> AssetManager::SharedZip::get(const String8& path)
|
|
{
|
|
AutoMutex _l(gLock);
|
|
time_t modWhen = getFileModDate(path);
|
|
sp<SharedZip> zip = gOpen.valueFor(path).promote();
|
|
if (zip != NULL && zip->mModWhen == modWhen) {
|
|
return zip;
|
|
}
|
|
zip = new SharedZip(path, modWhen);
|
|
gOpen.add(path, zip);
|
|
return zip;
|
|
|
|
}
|
|
|
|
ZipFileRO* AssetManager::SharedZip::getZip()
|
|
{
|
|
return mZipFile;
|
|
}
|
|
|
|
Asset* AssetManager::SharedZip::getResourceTableAsset()
|
|
{
|
|
ALOGV("Getting from SharedZip %p resource asset %p\n", this, mResourceTableAsset);
|
|
return mResourceTableAsset;
|
|
}
|
|
|
|
Asset* AssetManager::SharedZip::setResourceTableAsset(Asset* asset)
|
|
{
|
|
{
|
|
AutoMutex _l(gLock);
|
|
if (mResourceTableAsset == NULL) {
|
|
mResourceTableAsset = asset;
|
|
// This is not thread safe the first time it is called, so
|
|
// do it here with the global lock held.
|
|
asset->getBuffer(true);
|
|
return asset;
|
|
}
|
|
}
|
|
delete asset;
|
|
return mResourceTableAsset;
|
|
}
|
|
|
|
ResTable* AssetManager::SharedZip::getResourceTable()
|
|
{
|
|
ALOGV("Getting from SharedZip %p resource table %p\n", this, mResourceTable);
|
|
return mResourceTable;
|
|
}
|
|
|
|
ResTable* AssetManager::SharedZip::setResourceTable(ResTable* res)
|
|
{
|
|
{
|
|
AutoMutex _l(gLock);
|
|
if (mResourceTable == NULL) {
|
|
mResourceTable = res;
|
|
return res;
|
|
}
|
|
}
|
|
delete res;
|
|
return mResourceTable;
|
|
}
|
|
|
|
bool AssetManager::SharedZip::isUpToDate()
|
|
{
|
|
time_t modWhen = getFileModDate(mPath.string());
|
|
return mModWhen == modWhen;
|
|
}
|
|
|
|
AssetManager::SharedZip::~SharedZip()
|
|
{
|
|
//ALOGI("Destroying SharedZip %p %s\n", this, (const char*)mPath);
|
|
if (mResourceTable != NULL) {
|
|
delete mResourceTable;
|
|
}
|
|
if (mResourceTableAsset != NULL) {
|
|
delete mResourceTableAsset;
|
|
}
|
|
if (mZipFile != NULL) {
|
|
delete mZipFile;
|
|
ALOGV("Closed '%s'\n", mPath.string());
|
|
}
|
|
}
|
|
|
|
/*
|
|
* ===========================================================================
|
|
* AssetManager::ZipSet
|
|
* ===========================================================================
|
|
*/
|
|
|
|
/*
|
|
* Constructor.
|
|
*/
|
|
AssetManager::ZipSet::ZipSet(void)
|
|
{
|
|
}
|
|
|
|
/*
|
|
* Destructor. Close any open archives.
|
|
*/
|
|
AssetManager::ZipSet::~ZipSet(void)
|
|
{
|
|
size_t N = mZipFile.size();
|
|
for (size_t i = 0; i < N; i++)
|
|
closeZip(i);
|
|
}
|
|
|
|
/*
|
|
* Close a Zip file and reset the entry.
|
|
*/
|
|
void AssetManager::ZipSet::closeZip(int idx)
|
|
{
|
|
mZipFile.editItemAt(idx) = NULL;
|
|
}
|
|
|
|
|
|
/*
|
|
* Retrieve the appropriate Zip file from the set.
|
|
*/
|
|
ZipFileRO* AssetManager::ZipSet::getZip(const String8& path)
|
|
{
|
|
int idx = getIndex(path);
|
|
sp<SharedZip> zip = mZipFile[idx];
|
|
if (zip == NULL) {
|
|
zip = SharedZip::get(path);
|
|
mZipFile.editItemAt(idx) = zip;
|
|
}
|
|
return zip->getZip();
|
|
}
|
|
|
|
Asset* AssetManager::ZipSet::getZipResourceTableAsset(const String8& path)
|
|
{
|
|
int idx = getIndex(path);
|
|
sp<SharedZip> zip = mZipFile[idx];
|
|
if (zip == NULL) {
|
|
zip = SharedZip::get(path);
|
|
mZipFile.editItemAt(idx) = zip;
|
|
}
|
|
return zip->getResourceTableAsset();
|
|
}
|
|
|
|
Asset* AssetManager::ZipSet::setZipResourceTableAsset(const String8& path,
|
|
Asset* asset)
|
|
{
|
|
int idx = getIndex(path);
|
|
sp<SharedZip> zip = mZipFile[idx];
|
|
// doesn't make sense to call before previously accessing.
|
|
return zip->setResourceTableAsset(asset);
|
|
}
|
|
|
|
ResTable* AssetManager::ZipSet::getZipResourceTable(const String8& path)
|
|
{
|
|
int idx = getIndex(path);
|
|
sp<SharedZip> zip = mZipFile[idx];
|
|
if (zip == NULL) {
|
|
zip = SharedZip::get(path);
|
|
mZipFile.editItemAt(idx) = zip;
|
|
}
|
|
return zip->getResourceTable();
|
|
}
|
|
|
|
ResTable* AssetManager::ZipSet::setZipResourceTable(const String8& path,
|
|
ResTable* res)
|
|
{
|
|
int idx = getIndex(path);
|
|
sp<SharedZip> zip = mZipFile[idx];
|
|
// doesn't make sense to call before previously accessing.
|
|
return zip->setResourceTable(res);
|
|
}
|
|
|
|
/*
|
|
* Generate the partial pathname for the specified archive. The caller
|
|
* gets to prepend the asset root directory.
|
|
*
|
|
* Returns something like "common/en-US-noogle.jar".
|
|
*/
|
|
/*static*/ String8 AssetManager::ZipSet::getPathName(const char* zipPath)
|
|
{
|
|
return String8(zipPath);
|
|
}
|
|
|
|
bool AssetManager::ZipSet::isUpToDate()
|
|
{
|
|
const size_t N = mZipFile.size();
|
|
for (size_t i=0; i<N; i++) {
|
|
if (mZipFile[i] != NULL && !mZipFile[i]->isUpToDate()) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
* Compute the zip file's index.
|
|
*
|
|
* "appName", "locale", and "vendor" should be set to NULL to indicate the
|
|
* default directory.
|
|
*/
|
|
int AssetManager::ZipSet::getIndex(const String8& zip) const
|
|
{
|
|
const size_t N = mZipPath.size();
|
|
for (size_t i=0; i<N; i++) {
|
|
if (mZipPath[i] == zip) {
|
|
return i;
|
|
}
|
|
}
|
|
|
|
mZipPath.add(zip);
|
|
mZipFile.add(NULL);
|
|
|
|
return mZipPath.size()-1;
|
|
}
|