[CCode (cprefix="u_")]
namespace ICU {

[CCode (cname = "UChar")]
[IntegerType (rank = 5, min = 0, max = 65535)]
struct Char {}

[CCode (cname = "UChar*", destroy_function="g_free", has_type_id = false, cheader_filename = "unicode/ustring.h")]
[SimpleType]
struct String {
    public static String alloc(int32 length) {
        return (String) (Char*) new Char[length];
    }

    public static String from_string(string src) throws GLib.ConvertError {
        ErrorCode status = ErrorCode.ZERO_ERROR;
        int32 dest_capacity = src.length * 2 + 1;
        String dest = alloc(dest_capacity);
        int32 dest_length;
        strFromUTF8(dest, dest_capacity, out dest_length, src, src.length, ref status);
        if (status.is_failure()) {
            throw new GLib.ConvertError.FAILED(status.errorName());
        }
        return dest;
    }

    public string to_string() throws GLib.ConvertError {
        ErrorCode status = ErrorCode.ZERO_ERROR;
        char[] dest = new char[len() * 4 + 1];
        int32 dest_length;
        strToUTF8(dest, out dest_length, this, -1, ref status);
        if (status.is_failure()) {
            throw new GLib.ConvertError.FAILED(status.errorName());
        }
        dest[dest_length] = 0;
        return (string) dest;
    }

    [CCode (cname = "u_strlen")]
    public int32 len();

    [CCode (cname="u_strFromUTF8")]
    private static void strFromUTF8(String dest, int32 dest_capacity, out int32 dest_length, string src, int32 src_length, ref ErrorCode status);
    [CCode (cname="u_strToUTF8")]
    private static void strToUTF8(char[] dest, out int32 dest_length, String src, int32 src_length, ref ErrorCode status);
}

[CCode (cname = "UErrorCode", cprefix = "U_", cheader_filename = "unicode/utypes.h")]
enum ErrorCode {
    ZERO_ERROR,
    INVALID_CHAR_FOUND,
    INDEX_OUTOFBOUNDS_ERROR,
    BUFFER_OVERFLOW_ERROR,
    STRINGPREP_PROHIBITED_ERROR,
    UNASSIGNED_CODE_POINT_FOUND,
    IDNA_STD3_ASCII_RULES_ERROR
    ;
    [CCode (cname = "u_errorName")]
    public unowned string errorName();
    [CCode (cname = "U_SUCCESS")]
    public bool is_success();
    [CCode (cname = "U_FAILURE")]
    public bool is_failure();
}

[CCode (cname = "UParseError", cprefix = "U_", cheader_filename = "unicode/parseerr.h")]
struct ParseError {}

[CCode (cname = "UStringPrepProfile", cprefix = "usprep_", free_function = "usprep_close", cheader_filename = "unicode/usprep.h")]
[Compact]
class PrepProfile {
    public static PrepProfile open(string path, string file_name, ref ErrorCode status);
    public static PrepProfile openByType(PrepType type, ref ErrorCode status);
    public int32 prepare(String src, int32 src_length, String dest, int32 dest_capacity, PrepOptions options, out ParseError parse_error, ref ErrorCode status);
}
[CCode (cname = "UStringPrepProfileType", cprefix = "USPREP_")]
enum PrepType {
    RFC3491_NAMEPREP,
    RFC3920_NODEPREP,
    RFC3920_RESOURCEPREP
}
[CCode (cname = "int32_t", cprefix = "USPREP_")]
enum PrepOptions {
    DEFAULT,
    ALLOW_UNASSIGNED
}

[CCode (cname = "UIDNA", cprefix = "uidna_", free_function = "uidna_close", cheader_filename = "unicode/uidna.h")]
[Compact]
class IDNA {
    public static IDNA openUTS46(IDNAOptions options, ref ErrorCode status);
    public static int32 IDNToUnicode(Char* src, int32 src_length, Char* dest, int32 dest_capacity, IDNAOptions options, out ParseError parse_error, ref ErrorCode status);
    public static int32 IDNToASCII(Char* src, int32 src_length, Char* dest, int32 dest_capacity, IDNAOptions options, out ParseError parse_error, ref ErrorCode status);
    public int32 nameToUnicode(Char* src, int32 src_length, Char* dest, int32 dest_capacity, out IDNAInfo info, ref ErrorCode status);
    public int32 nameToASCII(Char* src, int32 src_length, Char* dest, int32 dest_capacity, out IDNAInfo info, ref ErrorCode status);
    public int32 nameToASCII_UTF8(string name, int32 name_length, char[] dest, out IDNAInfo info, ref ErrorCode status);
    public int32 nameToUnicodeUTF8(string name, int32 name_length, char[] dest, out IDNAInfo info, ref ErrorCode status);
}

[CCode (cname = "UIDNAInfo", default_value = "UIDNA_INFO_INITIALIZER", has_type_id = false, cheader_filename = "unicode/uidna.h")]
struct IDNAInfo {
    public static IDNAInfo INITIAL;
    public uint32 errors;
    public bool isTransitionalDifferent;
}

[CCode (cname = "uint32_t", cprefix = "UIDNA_")]
enum IDNAOptions {
    DEFAULT,
    ALLOW_UNASSIGNED,
    USE_STD3_RULES
}

}