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Code Issues Releases Wiki Activity

Extend AttachmentProvider to be able to get "raw" attachment

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AttachmentProvider can now return an attachment with an unmodified
MIME type. However, when viewing attachments this is not desirable. So
we try hard to return a sensible MIME type (use extension to look up
a MIME type if it's originally "application/octet-stream"; or replace
with canonical MIME type if it's known to be wrong, e.g.
"image/jpg" -> "image/jpeg")
This commit is contained in:
cketti 2011-03-24 23:36:59 +01:00
parent 7c5c29e87e
commit 522634fba7
2 changed files with 29 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

39
src/com/fsck/k9/provider/AttachmentProvider.java
View File

@ -30,6 +30,7 @@ public class AttachmentProvider extends ContentProvider {
public static final Uri CONTENT_URI = Uri.parse("content://com.fsck.k9.attachmentprovider");
private static final String FORMAT_RAW = "RAW";
private static final String FORMAT_VIEW = "VIEW";
private static final String FORMAT_THUMBNAIL = "THUMBNAIL";
public static class AttachmentProviderColumns {
@ -40,7 +41,11 @@ public class AttachmentProvider extends ContentProvider {
}
public static Uri getAttachmentUri(Account account, long id) {
return getAttachmentUri(account.getUuid(), id);
return getAttachmentUri(account.getUuid(), id, true);
}
public static Uri getAttachmentUriForViewing(Account account, long id) {
return getAttachmentUri(account.getUuid(), id, false);
}
public static Uri getAttachmentThumbnailUri(Account account, long id, int width, int height) {
@ -53,11 +58,11 @@ public class AttachmentProvider extends ContentProvider {
.build();
}
private static Uri getAttachmentUri(String db, long id) {
private static Uri getAttachmentUri(String db, long id, boolean raw) {
return CONTENT_URI.buildUpon()
.appendPath(db)
.appendPath(Long.toString(id))
.appendPath(FORMAT_RAW)
.appendPath(raw ? FORMAT_RAW : FORMAT_VIEW)
.build();
}
@ -98,6 +103,11 @@ public class AttachmentProvider extends ContentProvider {
String dbName = segments.get(0);
String id = segments.get(1);
String format = segments.get(2);
return getType(dbName, id, format);
}
private String getType(String dbName, String id, String format) {
if (FORMAT_THUMBNAIL.equals(format)) {
return "image/png";
} else {
@ -107,15 +117,21 @@ public class AttachmentProvider extends ContentProvider {
final LocalStore localStore = LocalStore.getLocalInstance(account, K9.app);
AttachmentInfo attachmentInfo = localStore.getAttachmentInfo(id);
if (MimeUtility.DEFAULT_ATTACHMENT_MIME_TYPE.equalsIgnoreCase(attachmentInfo.type)) {
// If the MIME type is the generic "application/octet-stream"
// we try to find a better one by looking at the file extension.
return MimeUtility.getMimeTypeByExtension(attachmentInfo.name);
if (FORMAT_VIEW.equals(format)) {
// When viewing the attachment we want the MIME type to be
// as sensible as possible. So we fix it up if necessary.
if (MimeUtility.DEFAULT_ATTACHMENT_MIME_TYPE.equalsIgnoreCase(attachmentInfo.type)) {
// If the MIME type is the generic "application/octet-stream"
// we try to find a better one by looking at the file extension.
return MimeUtility.getMimeTypeByExtension(attachmentInfo.name);
} else {
// Some messages contain wrong MIME types. See if we know better.
return MimeUtility.canonicalizeMimeType(attachmentInfo.type);
}
} else {
// Some messages contain wrong MIME types. See if we know better.
return MimeUtility.canonicalizeMimeType(attachmentInfo.type);
// When accessing the "raw" message we deliver the original MIME type.
return attachmentInfo.type;
}
} catch (MessagingException e) {
Log.e(K9.LOG_TAG, "Unable to retrieve LocalStore for " + account, e);
return null;
@ -158,8 +174,7 @@ public class AttachmentProvider extends ContentProvider {
File dir = getContext().getCacheDir();
File file = new File(dir, filename);
if (!file.exists()) {
Uri attachmentUri = getAttachmentUri(dbName, Long.parseLong(id));
String type = getType(attachmentUri);
String type = getType(dbName, id, FORMAT_VIEW);
try {
FileInputStream in = new FileInputStream(getFile(dbName, id));
try {

4
src/com/fsck/k9/view/AttachmentView.java
View File

@ -196,7 +196,7 @@ public class AttachmentView extends FrameLayout {
public void showFile() {
Uri uri = AttachmentProvider.getAttachmentUri(mAccount, part.getAttachmentId());
Uri uri = AttachmentProvider.getAttachmentUriForViewing(mAccount, part.getAttachmentId());
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setData(uri);
intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
@ -227,7 +227,7 @@ public class AttachmentView extends FrameLayout {
return;
}
try {
Uri uri = AttachmentProvider.getAttachmentUri(mAccount, part.getAttachmentId());
Uri uri = AttachmentProvider.getAttachmentUriForViewing(mAccount, part.getAttachmentId());
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setData(uri);
intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);