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std.Io: delete CWriter

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it shan't be missed
This commit is contained in:
Andrew Kelley 2025-07-20 17:02:01 -07:00
parent f34b4780b7
commit d509bc933f
2 changed files with 0 additions and 48 deletions
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4
lib/std/Io.zig
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@ -448,9 +448,6 @@ pub const bufferedReaderSize = @import("Io/buffered_reader.zig").bufferedReaderS
pub const FixedBufferStream = @import("Io/fixed_buffer_stream.zig").FixedBufferStream;
pub const fixedBufferStream = @import("Io/fixed_buffer_stream.zig").fixedBufferStream;
pub const CWriter = @import("Io/c_writer.zig").CWriter;
pub const cWriter = @import("Io/c_writer.zig").cWriter;
pub const LimitedReader = @import("Io/limited_reader.zig").LimitedReader;
pub const limitedReader = @import("Io/limited_reader.zig").limitedReader;
@ -903,7 +900,6 @@ test {
_ = @import("Io/buffered_atomic_file.zig");
_ = @import("Io/buffered_reader.zig");
_ = @import("Io/buffered_writer.zig");
_ = @import("Io/c_writer.zig");
_ = @import("Io/counting_writer.zig");
_ = @import("Io/counting_reader.zig");
_ = @import("Io/fixed_buffer_stream.zig");

44
lib/std/Io/c_writer.zig
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@ -1,44 +0,0 @@
const std = @import("../std.zig");
const builtin = @import("builtin");
const io = std.io;
const testing = std.testing;
pub const CWriter = io.GenericWriter(*std.c.FILE, std.fs.File.WriteError, cWriterWrite);
pub fn cWriter(c_file: *std.c.FILE) CWriter {
return .{ .context = c_file };
}
fn cWriterWrite(c_file: *std.c.FILE, bytes: []const u8) std.fs.File.WriteError!usize {
const amt_written = std.c.fwrite(bytes.ptr, 1, bytes.len, c_file);
if (amt_written >= 0) return amt_written;
switch (@as(std.c.E, @enumFromInt(std.c._errno().*))) {
.SUCCESS => unreachable,
.INVAL => unreachable,
.FAULT => unreachable,
.AGAIN => unreachable, // this is a blocking API
.BADF => unreachable, // always a race condition
.DESTADDRREQ => unreachable, // connect was never called
.DQUOT => return error.DiskQuota,
.FBIG => return error.FileTooBig,
.IO => return error.InputOutput,
.NOSPC => return error.NoSpaceLeft,
.PERM => return error.PermissionDenied,
.PIPE => return error.BrokenPipe,
else => |err| return std.posix.unexpectedErrno(err),
}
}
test cWriter {
if (!builtin.link_libc or builtin.os.tag == .wasi) return error.SkipZigTest;
const filename = "tmp_io_test_file.txt";
const out_file = std.c.fopen(filename, "w") orelse return error.UnableToOpenTestFile;
defer {
_ = std.c.fclose(out_file);
std.fs.cwd().deleteFileZ(filename) catch {};
}
const writer = cWriter(out_file);
try writer.print("hi: {}\n", .{@as(i32, 123)});
}