Function getUnprefixedPathType [src]

Get the path type of a path that is known to not have any namespace prefixes (\\?\, \\.\, \??\). If T is u16, then path should be encoded as WTF-16LE.

Prototype

pub fn getUnprefixedPathType(comptime T: type, path: []const T) UnprefixedPathType

Parameters

T: typepath: []const T

Example

 test getUnprefixedPathType {
    try std.testing.expectEqual(UnprefixedPathType.relative, getUnprefixedPathType(u8, ""));
    try std.testing.expectEqual(UnprefixedPathType.relative, getUnprefixedPathType(u8, "x"));
    try std.testing.expectEqual(UnprefixedPathType.relative, getUnprefixedPathType(u8, "x\\"));
    try std.testing.expectEqual(UnprefixedPathType.root_local_device, getUnprefixedPathType(u8, "//."));
    try std.testing.expectEqual(UnprefixedPathType.root_local_device, getUnprefixedPathType(u8, "/\\?"));
    try std.testing.expectEqual(UnprefixedPathType.root_local_device, getUnprefixedPathType(u8, "\\\\?"));
    try std.testing.expectEqual(UnprefixedPathType.unc_absolute, getUnprefixedPathType(u8, "\\\\x"));
    try std.testing.expectEqual(UnprefixedPathType.unc_absolute, getUnprefixedPathType(u8, "//x"));
    try std.testing.expectEqual(UnprefixedPathType.rooted, getUnprefixedPathType(u8, "\\x"));
    try std.testing.expectEqual(UnprefixedPathType.rooted, getUnprefixedPathType(u8, "/"));
    try std.testing.expectEqual(UnprefixedPathType.drive_relative, getUnprefixedPathType(u8, "x:"));
    try std.testing.expectEqual(UnprefixedPathType.drive_relative, getUnprefixedPathType(u8, "x:abc"));
    try std.testing.expectEqual(UnprefixedPathType.drive_relative, getUnprefixedPathType(u8, "x:a/b/c"));
    try std.testing.expectEqual(UnprefixedPathType.drive_absolute, getUnprefixedPathType(u8, "x:\\"));
    try std.testing.expectEqual(UnprefixedPathType.drive_absolute, getUnprefixedPathType(u8, "x:\\abc"));
    try std.testing.expectEqual(UnprefixedPathType.drive_absolute, getUnprefixedPathType(u8, "x:/a/b/c"));
}

Source

  pub fn getUnprefixedPathType(comptime T: type, path: []const T) UnprefixedPathType {
    if (path.len < 1) return .relative;

    if (std.debug.runtime_safety) {
        std.debug.assert(getNamespacePrefix(T, path) == .none);
    }

    const windows_path = std.fs.path.PathType.windows;
    if (windows_path.isSep(T, mem.littleToNative(T, path[0]))) {
        // \x
        if (path.len < 2 or !windows_path.isSep(T, mem.littleToNative(T, path[1]))) return .rooted;
        // exactly \\. or \\? with nothing trailing
        if (path.len == 3 and (mem.littleToNative(T, path[2]) == '.' or mem.littleToNative(T, path[2]) == '?')) return .root_local_device;
        // \\x
        return .unc_absolute;
    } else {
        // x
        if (path.len < 2 or mem.littleToNative(T, path[1]) != ':') return .relative;
        // x:\
        if (path.len > 2 and windows_path.isSep(T, mem.littleToNative(T, path[2]))) return .drive_absolute;
        // x:
        return .drive_relative;
    }
}  