Merge "Fix mmap errors when reading font files via the AssetManager." into rvc-dev am: 8cf38106

import android.annotation.IntRange;

import android.annotation.NonNull;

import android.annotation.Nullable;

import android.content.res.AssetFileDescriptor;

import android.content.res.AssetManager;

import android.content.res.Resources;

import android.os.LocaleList;

            Preconditions.checkNotNull(am, "assetManager can not be null");

            Preconditions.checkNotNull(path, "path can not be null");

            // Attempt to open as FD, which should work unless the asset is compressed

            AssetFileDescriptor assetFD;

            try {

                if (isAsset) {

                    assetFD = am.openFd(path);

                } else if (cookie > 0) {

                    assetFD = am.openNonAssetFd(cookie, path);

                } else {

                    assetFD = am.openNonAssetFd(path);

                }

                try (FileInputStream fis = assetFD.createInputStream()) {

                    final FileChannel fc = fis.getChannel();

                    long startOffset = assetFD.getStartOffset();

                    long declaredLength = assetFD.getDeclaredLength();

                    return fc.map(FileChannel.MapMode.READ_ONLY, startOffset, declaredLength);

                }

            } catch (IOException e) {

                // failed to open as FD so now we will attempt to open as an input stream

            }

            try (InputStream assetStream = isAsset ? am.open(path, AssetManager.ACCESS_BUFFER)

                    : am.openNonAsset(cookie, path, AssetManager.ACCESS_BUFFER)) {