Function GetCurrentDirectory [src]

The result is a slice of buffer, indexed from 0. The result is encoded as WTF-8.

Prototype

pub fn GetCurrentDirectory(buffer: []u8) GetCurrentDirectoryError![]u8

Parameters

buffer: []u8

Possible Errors

NameTooLong

Unexpected

Source

  pub fn GetCurrentDirectory(buffer: []u8) GetCurrentDirectoryError![]u8 {
    var wtf16le_buf: [PATH_MAX_WIDE:0]u16 = undefined;
    const result = kernel32.GetCurrentDirectoryW(wtf16le_buf.len + 1, &wtf16le_buf);
    if (result == 0) {
        switch (GetLastError()) {
            else => |err| return unexpectedError(err),
        }
    }
    assert(result <= wtf16le_buf.len);
    const wtf16le_slice = wtf16le_buf[0..result];
    var end_index: usize = 0;
    var it = std.unicode.Wtf16LeIterator.init(wtf16le_slice);
    while (it.nextCodepoint()) |codepoint| {
        const seq_len = std.unicode.utf8CodepointSequenceLength(codepoint) catch unreachable;
        if (end_index + seq_len >= buffer.len)
            return error.NameTooLong;
        end_index += std.unicode.wtf8Encode(codepoint, buffer[end_index..]) catch unreachable;
    }
    return buffer[0..end_index];
}  