絮语 v9.07 - FileProvider.java 源代码

package i.app;

import android.content.ContentProvider;
import android.content.ContentValues;
import android.content.Context;
import android.content.pm.ProviderInfo;
import android.content.res.XmlResourceParser;
import android.database.Cursor;
import android.database.MatrixCursor;
import android.net.Uri;
import android.os.Build;
import android.os.Environment;
import android.os.ParcelFileDescriptor;
import android.webkit.MimeTypeMap;
import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import org.xmlpull.v1.XmlPullParserException;

public class FileProvider extends ContentProvider {
    private static final String[] a = {"_display_name", "_size"};
    private static final File b = new File("/");
    private static HashMap c = new HashMap();
    private d d;

    private static d a(Context context, String str) {
        d dVar;
        synchronized (c) {
            d dVar2 = (d) c.get(str);
            dVar = dVar2;
            if (dVar2 == null) {
                try {
                    try {
                        e eVar = new e(str);
                        XmlResourceParser loadXmlMetaData = context.getPackageManager().resolveContentProvider(str, 128).loadXmlMetaData(context.getPackageManager(), "android.support.FILE_PROVIDER_PATHS");
                        if (loadXmlMetaData == null) {
                            throw new IllegalArgumentException("Missing android.support.FILE_PROVIDER_PATHS meta-data");
                        }
                        while (true) {
                            int next = loadXmlMetaData.next();
                            if (next == 1) {
                                break;
                            }
                            if (next == 2) {
                                String name = loadXmlMetaData.getName();
                                File file = null;
                                String attributeValue = loadXmlMetaData.getAttributeValue(null, "name");
                                String attributeValue2 = loadXmlMetaData.getAttributeValue(null, "path");
                                if ("root-path".equals(name)) {
                                    file = b;
                                } else if ("files-path".equals(name)) {
                                    file = context.getFilesDir();
                                } else if ("cache-path".equals(name)) {
                                    file = context.getCacheDir();
                                } else if ("external-path".equals(name)) {
                                    file = Environment.getExternalStorageDirectory();
                                } else if ("external-files-path".equals(name)) {
                                    File[] externalFilesDirs = getExternalFilesDirs(context, null);
                                    if (externalFilesDirs.length > 0) {
                                        file = externalFilesDirs[0];
                                    }
                                } else if ("external-cache-path".equals(name)) {
                                    File[] externalCacheDirs = getExternalCacheDirs(context);
                                    if (externalCacheDirs.length > 0) {
                                        file = externalCacheDirs[0];
                                    }
                                }
                                if (file != null) {
                                    eVar.a(attributeValue, a(file, attributeValue2));
                                }
                            }
                        }
                        c.put(str, eVar);
                        dVar = eVar;
                    } catch (IOException e) {
                        throw new IllegalArgumentException("Failed to parse android.support.FILE_PROVIDER_PATHS meta-data", e);
                    }
                } catch (XmlPullParserException e2) {
                    throw new IllegalArgumentException("Failed to parse android.support.FILE_PROVIDER_PATHS meta-data", e2);
                }
            }
        }
        return dVar;
    }

    private static File a(File file, String... strArr) {
        for (int i2 = 0; i2 <= 0; i2++) {
            String str = strArr[0];
            if (str != null) {
                file = new File(file, str);
            }
        }
        return file;
    }

    public static File[] getExternalCacheDirs(Context context) {
        return Build.VERSION.SDK_INT >= 19 ? context.getExternalCacheDirs() : new File[]{context.getExternalCacheDir()};
    }

    public static File[] getExternalFilesDirs(Context context, String str) {
        return Build.VERSION.SDK_INT >= 19 ? context.getExternalFilesDirs(str) : new File[]{context.getExternalFilesDir(str)};
    }

    public static Uri getUriForFile(Context context, String str, File file) {
        return a(context, str).a(file);
    }

    @Override
    public void attachInfo(Context context, ProviderInfo providerInfo) {
        super.attachInfo(context, providerInfo);
        if (providerInfo.exported) {
            throw new SecurityException("Provider must not be exported");
        }
        if (!providerInfo.grantUriPermissions) {
            throw new SecurityException("Provider must grant uri permissions");
        }
        this.d = a(context, providerInfo.authority);
    }

    @Override
    public int delete(Uri uri, String str, String[] strArr) {
        return this.d.a(uri).delete() ? 1 : 0;
    }

    @Override
    public String getType(Uri uri) {
        File a2 = this.d.a(uri);
        int lastIndexOf = a2.getName().lastIndexOf(46);
        if (lastIndexOf < 0) {
            return "application/octet-stream";
        }
        String mimeTypeFromExtension = MimeTypeMap.getSingleton().getMimeTypeFromExtension(a2.getName().substring(lastIndexOf + 1));
        return mimeTypeFromExtension != null ? mimeTypeFromExtension : "application/octet-stream";
    }

    @Override
    public Uri insert(Uri uri, ContentValues contentValues) {
        throw new UnsupportedOperationException("No external inserts");
    }

    @Override
    public boolean onCreate() {
        return true;
    }

    @Override
    public ParcelFileDescriptor openFile(Uri uri, String str) {
        int i2;
        File a2 = this.d.a(uri);
        if ("r".equals(str)) {
            i2 = 268435456;
        } else if ("w".equals(str) || "wt".equals(str)) {
            i2 = 738197504;
        } else if ("wa".equals(str)) {
            i2 = 704643072;
        } else if ("rw".equals(str)) {
            i2 = 939524096;
        } else {
            if (!"rwt".equals(str)) {
                throw new IllegalArgumentException("Invalid mode: " + str);
            }
            i2 = 1006632960;
        }
        return ParcelFileDescriptor.open(a2, i2);
    }

    @Override
    public Cursor query(Uri uri, String[] strArr, String str, String[] strArr2, String str2) {
        int i2;
        File a2 = this.d.a(uri);
        if (strArr == null) {
            strArr = a;
        }
        String[] strArr3 = new String[strArr.length];
        Object[] objArr = new Object[strArr.length];
        int i3 = 0;
        for (String str3 : strArr) {
            if ("_display_name".equals(str3)) {
                strArr3[i3] = "_display_name";
                i2 = i3 + 1;
                objArr[i3] = a2.getName();
            } else if ("_size".equals(str3)) {
                strArr3[i3] = "_size";
                i2 = i3 + 1;
                objArr[i3] = Long.valueOf(a2.length());
            }
            i3 = i2;
        }
        String[] strArr4 = new String[i3];
        System.arraycopy(strArr3, 0, strArr4, 0, i3);
        Object[] objArr2 = new Object[i3];
        System.arraycopy(objArr, 0, objArr2, 0, i3);
        MatrixCursor matrixCursor = new MatrixCursor(strArr4, 1);
        matrixCursor.addRow(objArr2);
        return matrixCursor;
    }

    @Override
    public int update(Uri uri, ContentValues contentValues, String str, String[] strArr) {
        throw new UnsupportedOperationException("No external updates");
    }
}