Determine number of inline images in a binary Word documenmt

2018-01-03T15:05:31.367000Z

Hi Pete
I have been on vacation but thanks for your reply. I have followed that document to find the images. The fib does have an offset into the #Table stream of which I got but it seems that from there it does not follow the spec. Maybe I am missing something. Do you have any examples of this? I will probably hop bacl on this project later today. Any sage advice?

Joey

Example code causes fatal errors so it can't compile/buildon my system...

2017-12-24T11:42:00.912000Z

During the last couple of days I have done a lot of experiments with this software and studied a lot more about compound files. The example noted above is in a number of cases of "example code"in the (otherwise very good) HelpFile and it simply doesn't work. By studying the use of delegates and Action in C# I was finally able to correct the code so that it works:

I changed the reference to "VisitedEntryAction" to be a simple System.Action, so...:

Action va = delegate (CFItem item)
{
CFi.Add(item);
};

        cf.RootStorage.VisitEntries(va, true);

This runs correctly and loads the list with CFItems. I was able to successfully load Storage and Streams for each Storage with the same technique.This completes the retrieval phase of my compound file access. I notice, in passing, that the Directory property is not accessible via OpenMCDF and this would give the path to each stream... I can get this data running 7-zip with an -l switch and re-directing output to a text file... Primitive, but it works.

The next phase involves accessing and changing the data in selected streams, then replacing the modified streams in the compound file.

I'll report success or problems to this thread.

It strikes me as a shame that no comment or help has been forthcoming by the originator of this software (or anyone else...) because it is obvious that a huge amount of very valuable work has gone into OpenMCDF. Perhaps the demand is low and, over years, the novelty has worn off...

Pete.

Determine number of inline images in a binary Word documenmt

2017-12-23T00:44:41.283000Z

As far as I know, there is no actual count of images in the FIB. (But it is a complex variable block and I may have missed something...) I think your best bet would be to use the information here:

https://msdn.microsoft.com/en-us/library/office/hh965732(v=office.14).aspx

...and detect each image, counting as you go.

HTH,

Pete.

Example code causes fatal errors so it can't compile/buildon my system...

2017-12-22T01:46:40.518000Z

I am very new to OLE Structured Storage but I managed to download your OpenMCDF and install the package thru NuGet. (Into VS2015)

What I need to do is pretty simple and falls into 3 steps:

Open an existing OSS file (I'll call it "the archive") and get a list of the Storage and Streams it contains.
Extract certain selected streams, Edit them. (They are actually plain text files...)
Replace the edited streams in the archive. (Or, if this is too dificult, create a new archive and write all of the storage and streams across to it, replacing the edited streams with the new edited versions.

So, I spent a fair bit of time reading the Help file (after I managed to get it opened properly, see elsewhere in this forum) But it doesn't make a lot of sense to me because it lacks a step-by-step example. The actual documentation of methods and properites is excellent, but it doesn't show me where I would use these things. For example: the Red and Black stuff... what is that all about?

I expected to be able to open the archive and do something like the "GetAllNamedEntries" method, but it won't accept a wild card to get everything, so I searched further...

I found this (under the CFItems Class):

CompoundFile cf = new CompoundFile(STORAGE_NAME);

FileStream output = new FileStream("LogEntries.txt", FileMode.Create);
TextWriter tw = new StreamWriter(output);

// CFItem represents both storage and stream items
VisitedEntryAction va = delegate(CFItem item)
{
tw.WriteLine(item.Name);
};

cf.RootStorage.VisitEntries(va, true);

tw.Close();

I don't want the results written to the log, so I modified the above as:

            CompoundFile cf = new CompoundFile(zipFileToRead);
            List<CFItem> CFi = new List<CFItem>();
            // CFItem represents both storage and stream items
            VisitedEntryAction va = delegate (CFItem item)
            {
                CFi.Add(item);
            };

            cf.RootStorage.VisitEntries(va, true);

            foreach (CFItem it in CFi)
            {
                // TODO:

            }

In BOTH CASES the line:

            cf.RootStorage.VisitEntries(va, true);

... throws an error on the "va" reference, as:

Error CS1503 Argument 1: cannot convert from 'OpenMcdf.VisitedEntryAction' to 'System.Action<OpenMcdf.CFItem>'

I tried everything I can think of to make this right but I don't really understand the "VisitedEntryAction" ... and I have never encountered System.Action in C# before.

I'd appreciate any guidance, please.

Pete.

Help file does not load properly

2017-12-22T00:12:46.113000Z

I had exactly the same problem. Right Clicking Properties did not show any "unblock" button. Solved it by Extracting the OpenMCDF download Zip into a new directory, and clicking on the extracted .chm file in the new directory.

Pete.

Determine number of inline images in a binary Word documenmt

2017-12-17T15:31:31.830000Z

How can I determine the number of inline images there are in a binary Word document that is NOT an attachment? I have the FIB and see that it does contain images but that inlcudes attachment icon.

Detecting Formatting Such as Bold, Color

2017-10-12T14:54:55.371000Z

How can one get the formatting used on a text or line

Extracting old doc and xls files

2016-04-25T09:15:24.636000Z

Where can I find out the structure of the containers for types 'Microsoft Excel Worksheet' and 'Microsoft Word Document'?

For instance for the XLS document, I tried the following..

                    CFST = CF.RootStorage.GetStream("Workbook")
                    OutBytes = CFST.GetData()

But when I save that to file, it's not a proper XLS file as it failes to load in Excel. The same happens for the doc file.

The above works ok for type "adobe acrobat document" using the CONTENTS stream.

Compacting and cloning streams

2016-04-20T08:04:49.659000Z

We have real ver. 4 format files, any chance to get the shrink method to work with this files ?

Recent posts to Discussion

Determine number of inline images in a binary Word documenmt

Example code causes fatal errors so it can't compile/buildon my system...

Determine number of inline images in a binary Word documenmt

Example code causes fatal errors so it can't compile/buildon my system...

Help file does not load properly

Determine number of inline images in a binary Word documenmt

Detecting Formatting Such as Bold, Color

Extracting old doc and xls files

Compacting and cloning streams