utils.utf8valid
Lua function utils.utf8valid Summary Checks if a UTF-8 string is valid Prototype `n, column = utils.utf8valid (s)` Description `This checks if a UTF-8 string is valid. This returns the length of the string (in Unicode characters) if the supplied string is valid UTF-8. Otherwise it returns nil, and the column of the character in error (1-relative). eg.
    print (utils.utf8valid (utils.fromhex ("F5838894FCB5898588B4"))) --> 2
    print (utils.utf8valid (utils.fromhex ("f0f0f0"))) --> nil 1
` See Also ... Topics Lua base functions Lua bc (big number) functions Lua bit manipulation functions Lua coroutine functions Lua debug functions Lua io functions Lua math functions Lua os functions Lua package functions Lua PCRE regular expression functions Lua script extensions Lua string functions Lua table functions Lua utilities Scripting Lua functions utils.base64decode (Decode a string which was base-64 encoded) utils.base64encode (Encode a string with base-64 encoding) utils.choose (Display a combo box with choices in it) utils.compress (Compress a string) utils.decompress (Decompress a string) utils.editbox (Display a large message box and get free-format reply) utils.edit_distance (Returns the Levenshtein Edit Distance between two words) utils.filepicker (Invokes the Windows standard "file picker" dialog box) utils.fromhex (Convert a string from hex) utils.functionlist (Returns a table of MUSHclient world function names) utils.hash (Hash a string, returning the hex codes) utils.info (Information about directories) utils.inputbox (Display a message box and get free-format reply) utils.listbox (Display a dialog box with choices in it in a single selection list box) utils.md5 (Hash a string using the 128-bit MD5 algorithm) utils.metaphone (Returns metaphones (sound-alike codes) for the supplied word) utils.msgbox (Display a message box and get a response) utils.multilistbox (Display a dialog box with choices in it in a multiple selection list box) utils.readdir (Read a disk directory into a table) utils.sha256 (Hash a string using a 256-bit hash) utils.spellcheckdialog (Spell-checker dialog) utils.split (Split a delimited string into a table) utils.tohex (Convert a string into hex) utils.utf8decode (Encodes a series of Unicode codes into a UTF-8 string) utils.utf8encode (Encodes a series of Unicode codes into a UTF-8 string) utils.xmlread (Parses an XML string into a nested table) (Help topic: lua=utils.utf8valid) Documentation contents page