Fix output filename tagging with "_embed.jpg" taking 1 char from original name

[pablojr]

Right now if no output filename is provided, F5Android library defaults to replacing the original extension by "_embed.jpg" but while doing so, it also messes up last char of original name. Example:
IMG_0001.jpg becomes IMG_000_embed.jpg (last 1 is accidentally chopped)

Fix:
Please change line 60 of Embed.java into
String extension = this.file.getName().substring(this.file.getName().lastIndexOf(".") );

Thanks.

[harlo]

Thanks for the fix-- much appreciated. Would you submit it as a patch?

[harlo]

Also, in PixelKnot, we didn't want the secret file named "XXX_embed.jpg" because that's a glaring flag that you've got a secret message embedded in a jpeg! So, maybe your patch should address that: what do you think would be a better naming convention?

[pablojr]

Since Github doesn't allow to attach a file to an issue here it is:

commit ba7a3da3c9eec5aa14de14d85a6168d2ff8151d1
Author: Pablo J. Rogina <pablo@mayorante.com>
Date:   Thu Jul 10 19:25:09 2014 -0300

    Fixed output filename tagging with "_embed.jpg" removing last char from original name

diff --git a/src/info/guardianproject/f5android/Embed.java b/src/info/guardianproject/f5android/Embed.java
index b0b44ce..bb87518 100644
--- a/src/info/guardianproject/f5android/Embed.java
+++ b/src/info/guardianproject/f5android/Embed.java
@@ -57,7 +57,7 @@ public class Embed {
            root_dir.mkdir();

        if(outFileName == null) {
-           String extension = this.file.getName().substring(this.file.getName().lastIndexOf(".") - 1);
+           String extension = this.file.getName().substring(this.file.getName().lastIndexOf(".") );
            this.outFile = new File(root_dir, this.file.getName().replace(extension, "_embed.jpg"));
            this.outFileName = this.outFile.getAbsolutePath();
        } else {

[pablojr]

And regarding the secret file name, while using the camera for the input, I would expect just one file named and located as per the device's camera system (i.e. IMG_0000001.jpg at /storage/sdcard0/DCIM) so it will be placed among any other image taken with the default camera application.
And for the case of an existing image, I would say to provide a checkbox so the file will be overwritten (yes, I know, the original will be gone once embedded) or to create a new file with the same name at the same location but with extension 'jpgs'