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std › crypto › Certificate › der › Element › parse Public Function parse Doc Source Public Function std.crypto.Certificate.der.Element.parse
pub fn parse (bytes : []const u8 , index : u32 ) Element .ParseError !Element Params bytes : []const u8 index : u32 File crypto/Certificate.zig: 971
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1005 pub fn parse (bytes : []const u8 , index : u32 ) Element .ParseError !Element {
var i = index ;
const identifier : Identifier = @bitCast (bytes [i ]);
i += 1 ;
const size_byte = bytes [i ];
i += 1 ;
if ((size_byte >> 7 ) == 0 ) {
return .{
.identifier = identifier ,
.slice = .{
.start = i ,
.end = i + size_byte ,
},
};
}
const len_size : u7 = @truncate (size_byte );
if (len_size > @sizeOf (u32 )) {
return error .CertificateFieldHasInvalidLength ;
}
const end_i = i + len_size ;
var long_form_size : u32 = 0 ;
while (i < end_i ) : (i += 1 ) {
long_form_size = (long_form_size << 8 ) | bytes [i ];
}
return .{
.identifier = identifier ,
.slice = .{
.start = i ,
.end = i + long_form_size ,
},
};
}