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Add open for composed transcodingstreams #113

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Add open for composed transcodingstreams #113

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Add open for composed transcodingstreams
jakobnissen Sep 15, 2021
131a494
Merge branch 'master' into compose
ViralBShah Aug 18, 2023
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42 changes: 42 additions & 0 deletions src/stream.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -177,6 +177,48 @@ function Base.open(f::Function, ::Type{T}, args...) where T<:TranscodingStream
end
end

# ComposedFunction is available in Julia 1.6
@static if VERSION ≥ v"1.6"
function Base.open(
f::Function,
code::ComposedFunction{
<:Union{<:Type{<:TranscodingStream}, <:ComposedFunction},
<:Type{<:TranscodingStream}
},
path::AbstractString
)
io = open(code, path)
try
f(io)
finally
close(io)
end
end

# Allow open with chained TranscodingStreams
function Base.open(
code::ComposedFunction{
<:Union{<:Type{<:TranscodingStream}, <:ComposedFunction},
<:Type{<:TranscodingStream}
},
path::AbstractString
)
_open(typeof(code), open(path))
end

function _open(code::Type{T}, io::IO) where {
S <: TranscodingStream,
U <: Union{<:Type{<:TranscodingStream}, <:ComposedFunction},
T <: ComposedFunction{U,<:Type{S}}
}
_open(U, S(io))
end

function _open(code::Type{<:Type{T}}, io::IO) where {T <: TranscodingStream}
T(io)
end
Comment on lines +217 to +219
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@mkitti mkitti Aug 23, 2022 •
edited
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Could you add a comment about what this does?

end

function Base.isopen(stream::TranscodingStream)
return stream.state.mode != :close && stream.state.mode != :panic
end
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