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std.fs.File: begrudgingly add back deprecated APIs

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I'm not ready to rework MachO linker file access at the moment.
This commit is contained in:
Andrew Kelley 2025-10-13 23:16:02 -07:00
parent 79a59c5165
commit c2d1a339da
1 changed files with 44 additions and 0 deletions
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44
lib/std/fs/File.zig
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@ -655,6 +655,17 @@ pub fn pread(self: File, buffer: []u8, offset: u64) PReadError!usize {
return posix.pread(self.handle, buffer, offset);
}
/// Deprecated in favor of `Reader`.
pub fn preadAll(self: File, buffer: []u8, offset: u64) PReadError!usize {
var index: usize = 0;
while (index != buffer.len) {
const amt = try self.pread(buffer[index..], offset + index);
if (amt == 0) break;
index += amt;
}
return index;
}
/// See https://github.com/ziglang/zig/issues/7699
pub fn readv(self: File, iovecs: []const posix.iovec) ReadError!usize {
if (is_windows) {
@ -697,6 +708,14 @@ pub fn writeAll(self: File, bytes: []const u8) WriteError!void {
}
}
/// Deprecated in favor of `Writer`.
pub fn pwriteAll(self: File, bytes: []const u8, offset: u64) PWriteError!void {
var index: usize = 0;
while (index < bytes.len) {
index += try self.pwrite(bytes[index..], offset + index);
}
}
/// On Windows, this function currently does alter the file pointer.
/// https://github.com/ziglang/zig/issues/12783
pub fn pwrite(self: File, bytes: []const u8, offset: u64) PWriteError!usize {
@ -732,6 +751,31 @@ pub fn pwritev(self: File, iovecs: []posix.iovec_const, offset: u64) PWriteError
return posix.pwritev(self.handle, iovecs, offset);
}
/// Deprecated in favor of `Writer`.
pub const CopyRangeError = posix.CopyFileRangeError;
/// Deprecated in favor of `Writer`.
pub fn copyRange(in: File, in_offset: u64, out: File, out_offset: u64, len: u64) CopyRangeError!u64 {
const adjusted_len = math.cast(usize, len) orelse maxInt(usize);
const result = try posix.copy_file_range(in.handle, in_offset, out.handle, out_offset, adjusted_len, 0);
return result;
}
/// Deprecated in favor of `Writer`.
pub fn copyRangeAll(in: File, in_offset: u64, out: File, out_offset: u64, len: u64) CopyRangeError!u64 {
var total_bytes_copied: u64 = 0;
var in_off = in_offset;
var out_off = out_offset;
while (total_bytes_copied < len) {
const amt_copied = try copyRange(in, in_off, out, out_off, len - total_bytes_copied);
if (amt_copied == 0) return total_bytes_copied;
total_bytes_copied += amt_copied;
in_off += amt_copied;
out_off += amt_copied;
}
return total_bytes_copied;
}
/// Deprecated in favor of `Io.File.Reader`.
pub const Reader = Io.File.Reader;