FUSE: Filesystem in Userspace for easy file concatenation of big files

Files with the string "-concat-" anywhere in the filename are considered concatenation description special files.

They contain a file list, which, when mounted as a fuse file system will turn these files into concatenations of the contents of the contained files.

e.g.

  file1.MTS
  file2.MTS
  file3.MTS

  bigmovie-concat-file.MTS

contents of bigmovie-concat-file.MTS:

file1.MTS
file2.MTS
file3.MTS

on seperate lines. Empty lines or lines, which do not resolve to a file where a stat call succeeds, are ignored.

Simple "range" expressions are supported in -concat- files. This way, you can slice an input file (and even reorder it!).
The line format is path:offset:length, with both offset and length being optional.
Do remember that the same file can be specified multiple times, and it will get concatenated multiple times, as expected.
The order in which the new file is created is the same as in the -concat- file.

Some examples:

file1.bin           // use the entire file
file1.bin:10        // use file1.bin again, but starting at offset 10
file2.bin:50:100    // use file2.bin, but only 100 bytes starting at offset 50 (inclusive).
file3.bin::1        // use file3.bin, but only the very first byte
file1.bin           // use file1.bin in its entirety again

You will need to install libfuse-dev to compile:

sudo apt-get install libfuse-dev

Compile with

  gcc -Wall concatfs.c `pkg-config fuse --cflags --libs` -o concatfs

Use with:

  concatfs path-to-source-dir path-to-target-dir [fuse-mount options]