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a misty Gleam web server
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Files
src/mist/internal/file.gleam
import gleam/erlang/atom.{type Atom}
import gleam/result
import glisten/socket.{type Socket}
pub type FileDescriptor
pub type FileError {
IsDir
NoAccess
NoEntry
UnknownFileError
}
pub type File {
File(descriptor: FileDescriptor, file_size: Int)
}
pub fn stat(filename: BitArray) -> Result(File, FileError) {
filename
|> open
|> result.map(fn(fd) {
let file_size = size(filename)
File(fd, file_size)
})
}
@external(erlang, "file", "sendfile")
pub fn sendfile(
file_descriptor file_descriptor: FileDescriptor,
socket socket: Socket,
offset offset: Int,
bytes bytes: Int,
options options: List(a),
) -> Result(Int, Atom)
@external(erlang, "mist_ffi", "file_open")
fn open(file: BitArray) -> Result(FileDescriptor, FileError)
@external(erlang, "filelib", "file_size")
fn size(path: BitArray) -> Int