diff options
Diffstat (limited to 'std/io.zig')
| -rw-r--r-- | std/io.zig | 39 |
1 files changed, 30 insertions, 9 deletions
diff --git a/std/io.zig b/std/io.zig index dea327cf16..d570927488 100644 --- a/std/io.zig +++ b/std/io.zig @@ -20,6 +20,12 @@ const fmt = std.fmt; const is_posix = builtin.os != builtin.Os.windows; const is_windows = builtin.os == builtin.Os.windows; +test "import io tests" { + comptime { + _ = @import("io_test.zig"); + } +} + /// The function received invalid input at runtime. An Invalid error means a /// bug in the program that called the function. error Invalid; @@ -247,17 +253,32 @@ pub const File = struct { } pub fn getEndPos(self: &File) -> %usize { - var stat: system.Stat = undefined; - const err = system.getErrno(system.fstat(self.handle, &stat)); - if (err > 0) { - return switch (err) { - system.EBADF => error.BadFd, - system.ENOMEM => error.OutOfMemory, - else => os.unexpectedErrorPosix(err), + if (is_posix) { + var stat: system.Stat = undefined; + const err = system.getErrno(system.fstat(self.handle, &stat)); + if (err > 0) { + return switch (err) { + system.EBADF => error.BadFd, + system.ENOMEM => error.OutOfMemory, + else => os.unexpectedErrorPosix(err), + } } - } - return usize(stat.size); + return usize(stat.size); + } else if (is_windows) { + var file_size: system.LARGE_INTEGER = undefined; + if (system.GetFileSizeEx(self.handle, &file_size) == 0) { + const err = system.GetLastError(); + return switch (err) { + else => os.unexpectedErrorWindows(err), + }; + } + if (file_size < 0) + return error.Overflow; + return math.cast(usize, u64(file_size)); + } else { + unreachable; + } } pub fn read(self: &File, buffer: []u8) -> %usize { |