How to get the name from an index?

[nhz2]

If I have ZipArchive and an index, how can I get the entry name as a String?

I am currently using:

name = unsafe_string(LibZip.zip_get_file_info(archive, index).name)

But this seems to be causing segmentation faults in JuliaIO/ZipArchives.jl#89

Is there a less unsafe way to do this?

To clarify, I want the raw bytes of the entry name, I don't want any "automagical" encoding conversions.

[AlexKlo]

Hi!
You can obtain a Ptr{UInt8} using libzip_get_name from LibZip.jl and then convert it as needed.

using LibZip

archive = ZipArchive(; flags = LIBZIP_CREATE)

write(archive, "greetings.txt", b"Hello, from LibZip!")

name_ptr = libzip_get_name(archive.archive_ptr, 0, 0)

julia> unsafe_string(name_ptr)
"greetings.txt"

[AlexKlo]

I noticed that there are faults in JuliaIO/ZipArchives.jl#89 on a 32-bit system with Ubuntu and on Windows.

It seems the issue is with the structure:

mutable struct LibZipStatT
    valid::Int64
    name::Ptr{UInt8}
    index::Int64
    size::Int64
    comp_size::Int64
    time::Int64
    crc::UInt32
    comp_method::UInt16
    encryption_method::UInt16
    flags::Int32

    LibZipStatT() = new(0, Ptr{UInt8}(), 0, 0, 0, 0, 0, 0, 0, 0)
end

The field types need to be correctly defined for different systems.

[nhz2]

Yes, not just this struct; the other functions need to be fixed to match https://github.com/nih-at/libzip/blob/main/lib/zip.h

LibZip.jl/src/LibZip.jl

Lines 384 to 386 in bfa63f4

	function libzip_source_stat(source, sb)
	return ccall((:zip_source_stat, libzip), Int64, (Ptr{LibZipSourceT}, Ptr{LibZipStatT}), source, sb)
	end

For example based on: https://github.com/nih-at/libzip/blob/e9083a7b41463489cd6641310c36f3b9197e1d27/lib/zip.h#L499
Should be changed to:

function libzip_source_stat(source, sb) 
    return ccall((:zip_source_stat, libzip), Cint, (Ptr{LibZipSourceT}, Ref{LibZipStatT}), source, sb) 
end 

You may want to check out https://github.com/JuliaInterop/Clang.jl to help with this.