idna_strerror3

Usage

Arguments

Idna_rc rc

an Idna_rc return code.

Overview

Convert a return code integer to a text string. This string can be used to output a diagnostic message to the user.

Idna_success

Successful operation. This value is guaranteed to always be zero, the remaining ones are only guaranteed to hold non-zero values, for logical comparison purposes.

Idna_stringprep_error

Error during string preparation.

Idna_punycode_error

Error during punycode operation.

Idna_contains_non_ldh

For IDNA_USE_STD3_ASCII_RULES, indicate that the string contains non-LDH ASCII characters.

Idna_contains_minus

For IDNA_USE_STD3_ASCII_RULES, indicate that the string contains a leading or trailing hyphen-minus (U+002D).

Idna_invalid_length

The final output string is not within the (inclusive) range 1 to 63 characters.

Idna_no_ace_prefix

The string does not contain the ACE prefix (for ToUnicode).

Idna_roundtrip_verify_error

The ToASCII operation on output string does not equal the input.

Idna_contains_ace_prefix

The input contains the ACE prefix (for ToASCII).

Idna_iconv_error

Character encoding conversion error.

Idna_malloc_error

Could not allocate buffer (this is typically a fatal error).

Idna_dlopen_error

Could not dlopen the libcidn DSO (only used internally in libc).

Return value: Returns a pointer to a statically allocated string containing a description of the error with the return code rc .