idna_to_ascii_4i(3) [debian man page]
idna_to_ascii_4i(3) libidn idna_to_ascii_4i(3) NAME
idna_to_ascii_4i - API function SYNOPSIS
#include <idna.h> int idna_to_ascii_4i(const uint32_t * in, size_t inlen, char * out, int flags); ARGUMENTS
const uint32_t * in input array with unicode code points. size_t inlen length of input array with unicode code points. char * out output zero terminated string that must have room for at least 63 characters plus the terminating zero. int flags an Idna_flags value, e.g., IDNA_ALLOW_UNASSIGNED or IDNA_USE_STD3_ASCII_RULES. DESCRIPTION
The ToASCII operation takes a sequence of Unicode code points that make up one domain label and transforms it into a sequence of code points in the ASCII range (0..7F). If ToASCII succeeds, the original sequence and the resulting sequence are equivalent labels. It is important to note that the ToASCII operation can fail. ToASCII fails if any step of it fails. If any step of the ToASCII operation fails on any label in a domain name, that domain name MUST NOT be used as an internationalized domain name. The method for deadling with this failure is application-specific. The inputs to ToASCII are a sequence of code points, the AllowUnassigned flag, and the UseSTD3ASCIIRules flag. The output of ToASCII is either a sequence of ASCII code points or a failure condition. ToASCII never alters a sequence of code points that are all in the ASCII range to begin with (although it could fail). Applying the ToASCII operation multiple times has exactly the same effect as applying it just once. RETURN VALUE
Returns 0 on success, or an Idna_rc error code. REPORTING BUGS
Report bugs to <bug-libidn@gnu.org>. GNU Libidn home page: http://www.gnu.org/software/libidn/ General help using GNU software: http://www.gnu.org/gethelp/ COPYRIGHT
Copyright (C) 2002-2012 Simon Josefsson. Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved. SEE ALSO
The full documentation for libidn is maintained as a Texinfo manual. If the info and libidn programs are properly installed at your site, the command info libidn should give you access to the complete manual. libidn 1.25 idna_to_ascii_4i(3)
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idna_strerror(3) libidn idna_strerror(3) NAME
idna_strerror - API function SYNOPSIS
#include <idna.h> const char * idna_strerror(Idna_rc rc); ARGUMENTS
Idna_rc rc an Idna_rc return code. DESCRIPTION
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 log- ical 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 Could not convert string in locale encoding. 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. REPORTING BUGS
Report bugs to <bug-libidn@gnu.org>. GNU Libidn home page: http://www.gnu.org/software/libidn/ General help using GNU software: http://www.gnu.org/gethelp/ COPYRIGHT
Copyright (C) 2002-2013 Simon Josefsson. Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved. SEE ALSO
The full documentation for libidn is maintained as a Texinfo manual. If the info and libidn programs are properly installed at your site, the command info libidn should give you access to the complete manual. libidn 1.28 idna_strerror(3)