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Use io.Stream as the internal interface for os2.File

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This commit is contained in:
gingerBill
2023-06-08 16:55:01 +01:00
parent 6c040497ef
commit 145a7a24e8
4 changed files with 131 additions and 104 deletions
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core/os/os2/file_linux.odin
+55 -11
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@@ -73,6 +73,10 @@ _new_file :: proc(fd: uintptr, _: string) -> ^File {
file.impl.fd = int(fd)
file.impl.allocator = _file_allocator()
file.impl.name = _get_full_path(file.impl.fd, file.impl.allocator)
file.stream = {
data = file,
procedure = _file_stream_proc,
}
return file
}
@@ -102,7 +106,7 @@ _name :: proc(f: ^File) -> string {
return f.impl.name if f != nil else ""
}
_seek :: proc(f: ^File, offset: i64, whence: Seek_From) -> (ret: i64, err: Error) {
_seek :: proc(f: ^File, offset: i64, whence: io.Seek_From) -> (ret: i64, err: Error) {
res := unix.sys_lseek(f.impl.fd, offset, int(whence))
if res < 0 {
return -1, _get_platform_error(int(res))
@@ -139,11 +143,6 @@ _read_at :: proc(f: ^File, p: []byte, offset: i64) -> (n: int, err: Error) {
return
}
_read_from :: proc(f: ^File, r: io.Reader) -> (n: i64, err: Error) {
//TODO
return
}
_write :: proc(f: ^File, p: []byte) -> (n: int, err: Error) {
if len(p) == 0 {
return 0, nil
@@ -173,11 +172,6 @@ _write_at :: proc(f: ^File, p: []byte, offset: i64) -> (n: int, err: Error) {
return
}
_write_to :: proc(f: ^File, w: io.Writer) -> (n: i64, err: Error) {
//TODO
return
}
_file_size :: proc(f: ^File) -> (n: i64, err: Error) {
s: _Stat = ---
res := unix.sys_fstat(f.impl.fd, &s)
@@ -366,3 +360,53 @@ _is_dir_fd :: proc(fd: int) -> bool {
_temp_name_to_cstring :: proc(name: string) -> (cname: cstring) {
return strings.clone_to_cstring(name, context.temp_allocator)
}
@(private="package")
_file_stream_proc :: proc(stream_data: rawptr, mode: io.Stream_Mode, p: []byte, offset: i64, whence: io.Seek_From) -> (n: i64, err: io.Error) {
f := (^File)(stream_data)
ferr: Error
i: int
switch mode {
case .Read:
i, ferr = _read(f, p)
n = i64(i)
err = error_to_io_error(ferr)
return
case .Read_At:
i, ferr = _read_at(f, p, offset)
n = i64(i)
err = error_to_io_error(ferr)
return
case .Write:
i, ferr = _write(f, p)
n = i64(i)
err = error_to_io_error(ferr)
return
case .Write_At:
i, ferr = _write_at(f, p, offset)
n = i64(i)
err = error_to_io_error(ferr)
return
case .Seek:
n, ferr = _seek(f, offset, whence)
err = error_to_io_error(ferr)
return
case .Size:
n, ferr = _file_size(f)
err = error_to_io_error(ferr)
return
case .Flush:
ferr = _flush(f)
err = error_to_io_error(ferr)
return
case .Close, .Destroy:
ferr = _close(f)
err = error_to_io_error(ferr)
return
case .Query:
return io.query_utility({.Read, .Read_At, .Write, .Write_At, .Seek, .Size, .Flush, .Close, .Destroy, .Query})
}
return 0, .Empty
}