extract

I have a pointer to an array of bytes mixed that contains the interleaved bytes of two distinct arrays array1 and array2 . Say mixed looks something like this: a1b2c3d4... What I need to do is de-interleave the bytes so I get array1 = abcd... and array2 = 1234... . I know the length of mixed ahead of time, and the lengths of array1 and array2 are equivalent, both equal to mixed / 2 . Here is my current implementation ( array1 and array2 are already allocated): int i, j; int mixedLength_2 = mixedLength / 2; for (i = 0, j = 0; i < mixedLength_2; i++, j += 2) { array1[i] = mixed[j]; array2[i] =

I am trying to get sizes (width and depth) of images embedded in a PDF file. The images in the PDF are all high resolution vector images. I tried using PDFBox. PDFBox libraries extract images perfectly for normal graphics. But, when it gets vector images, it extracts different layers as different images. I have also read about iText. But iText can convert the whole page as rasterized image. Whereas, my PDF page is actually consisting multiple images and I need to extract/get size of all of them differently. I am attaching my PDFBox image extraction code here. Please let me know, how can I get

Closed. This question is off-topic. It is not currently accepting answers. Learn more . Want to improve this question? Update the question so it's on-topic for Stack Overflow. I have a .cer certificate file, and need to extract the Public Key. I can only extract to PEM format. The "outform" parameter does nothing . openssl x509 -inform PEM -in certificate.cer -outform DER -pubkey -noout > publickey.der Is it possible to extract in DER format? Solved decoding the base64 PEM file: openssl x509 -in certificate.cer -pubkey -noout | openssl enc -base64 -d > publickey.der Any other idea is welcome.

I have an Excel worksheet with two columns (name/ID) and then another list that is a subset of the names only from the larger aforementioned list. I want to go through the subset list and then pull the data from the larger list (name/ID) and put it somewhere else...essentially only grabbing the data from the larger list if the name is on the subset. I tried using Filters, but couldn't get it work. Thoughts? Thanks. l0b0 New Excel versions =IF(ISNA(VLOOKUP(A1,B,B,1,FALSE)),"",A1) Older Excel versions =IF(ISNA(VLOOKUP(A1;B:B;1;FALSE));"";A1) That is: "If the value of A1 exists in the B column,

I am looking for a tool to extract a given rectangular region (by coordinates) of a 1-page PDF file and produce a 1-page PDF file with the specified region: # in.pdf is a 1-page pdf file extract file.pdf 0 0 100 100 > out.pdf # out.pdf is now a 1-page pdf file with a page of size 100x100 # it contains the region (0, 0) to (100, 100) of file.pdf I could convert the PDF to an image and use convert , but this would mean that the resulting PDF would not be vectorial anymore, which is not acceptable (I want to be able to zoom). I would ideally like to perform this task with a command-line tool or a

I just downloaded the Java SDK/JDK versions 5 and 6, and I just need the development tools (and some libraries) contained in the installation packages, I don't need to perform an installation and that's why I was only looking for a zip package at first (for Windows there is only an exe installation file), I only need to extract the contents of the installation packages, I think this can be done from the command line but so far I haven't found how to do this (I already considered WinRar and 7-Zip, but I really want to find how to do it without using these tools) Have you done this before and

I've found tons of pages saying how to untar tar.bz2 files, but how would one untar a tar.bz file? use the -j option of tar . tar -xjf /path/to/archive.tar.bz According to the man pages for bzip2 If the file does not end in one of the recognised endings, .bz2, .bz, .tbz2 or .tbz, bzip2 complains that it cannot guess the name of the original file, and uses the original name with .out appended. Based on this, I'm guessing that '.bz' is considered a valid suffix for bzip2 compressed files. Also, keep in mind that the original file name was probably generated by hand, something like this: tar jcf