JuliaIO / JuliaIO/MAT.jl

Read IOStream for use with S3

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Julia
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Description

Is it possible to pass an IOBuffer to MAT.jl?

This would be useful when storing data on services such as Amazon S3 with AWS.jl.
I tried the following code, but it did not work.

using AWS
using AWS.S3
env = AWSEnv(); bkt = "???"

file = S3.get_object(env, bkt, "testfile.mat").obj
#IOBuffer(data=Uint8[...], readable=true, writable=true, seekable=true, append=false, size=1040, maxsize=Inf, ptr=1041, mark=-1)

vars = matread(file)
# ERROR: `matread` has no method matching matread(::IOBuffer)

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First steps

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  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start at the matread entry point in MAT.jl and inspect how it currently accepts file inputs. Try the issue's AWS.S3 IOBuffer example and identify the existing read path it must support; done means matread(file) works for an IOBuffer containing a MATLAB file and the behavior is covered by an appropriate test.

Written by the indexing model from the issue text.

Assessment

Tech stack
julia
Domain
data
Issue type
Feature
Difficulty
3/5
Estimated time
1-2 days
Activity status
Quiet
Clarity
Mostly clear
Newbie friendliness
55/100

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