I tried to implement a new data format for internal use and share how I register a new data format without altering FileIO’s registry. It’s obvious to someone, but I hope someone finds it helpful.
List of solutions
To integrate your I/O packages to FileIO, you should register your custom file format to FileIO. There are following approaches:
(1) Update registry.jl of FileIO.
(2) Explicitly execute add_format(...) before the use.
(3) Automatically call add_format(...) while importing the custom I/O package.
The first method is what is written in the FileIO’s documentation. For my case, I ignore this solution to prevent “custom FileIO” because my I/O package is for internal use and full request is not an option.
A few people facing the similar problem to me choose the second solution [fileio minimal example,MeshIO.jl at experimental stage]. I made an example code (suppose I made a _TestTemplates.jl package):
using _TestTemplates
using FileIO
detect_test(io) = endswith(io.name,".test>")
add_format(format"TEST",detect_test,[".test"], [:_TestTemplates])
save("test.test","Hello, world")
load("test.test") # return "Hello, world"
However, this should be done manually and tedious. I want to hide the registration lines inside package.
I suggest to use __init__ in the package :
# In the middle of package
function __init__()
detect_test(io) = endswith(io.name,".test>")
add_format(format"TEST",detect_test,[".test"], [:_TestTemplates])
end
Then the following code works:
using _TestTemplates
using FileIO
save("test.test","Hello, world")
load("test.test") # return "Hello, world"
I made a toy example in github.