Function getcwd [src]
The result is a slice of out_buffer, indexed from 0.
Prototype
pub fn getcwd(out_buffer: []u8) GetCwdError![]u8 Parameters
out_buffer: []u8 Possible Errors
The Operating System returned an undocumented error code.
This error is in theory not possible, but it would be better to handle this error than to invoke undefined behavior.
When this error code is observed, it usually means the Zig Standard Library needs a small patch to add the error code to the error set for the respective function.
Source
pub fn getcwd(out_buffer: []u8) GetCwdError![]u8 {
if (native_os == .windows) {
return windows.GetCurrentDirectory(out_buffer);
} else if (native_os == .wasi and !builtin.link_libc) {
const path = ".";
if (out_buffer.len < path.len) return error.NameTooLong;
const result = out_buffer[0..path.len];
@memcpy(result, path);
return result;
}
const err: E = if (builtin.link_libc) err: {
const c_err = if (std.c.getcwd(out_buffer.ptr, out_buffer.len)) |_| 0 else std.c._errno().*;
break :err @enumFromInt(c_err);
} else err: {
break :err errno(system.getcwd(out_buffer.ptr, out_buffer.len));
};
switch (err) {
.SUCCESS => return mem.sliceTo(out_buffer, 0),
.FAULT => unreachable,
.INVAL => unreachable,
.NOENT => return error.CurrentWorkingDirectoryUnlinked,
.RANGE => return error.NameTooLong,
else => return unexpectedErrno(err),
}
}