utf8Conversion: Convert Integer Vectors to or from UTF-8-encoded Character...

In robertzk/monadicbase: The R Base Package

Description

Conversion of UTF-8 encoded character vectors to and from integer vectors.

Usage

utf8ToInt(x)
intToUtf8(x, multiple = FALSE)

Arguments

x	object to be converted.
multiple	logical: should the conversion be to a single character string or multiple individual characters?

Details

These will work in any locale, including on platforms that do not otherwise support multi-byte character sets.

Value

Unicode defines a name and a number of all of the glyphs it encompasses: the numbers are called code points: they run from 0 to 0x10FFFF.

utf8ToInt converts a length-one character string encoded in UTF-8 to an integer vector of Unicode code points. As from R 3.2.1 it checks validity of the input and returns NA if it is invalid.

intToUtf8 converts a numeric vector of Unicode code points either to a single character string or a character vector of single characters. (For a single character string 0 is silently omitted: otherwise 0 is mapped to "". Non-integral numeric values are truncated to integers.) The Encoding is declared as "UTF-8".

NA inputs are mapped to NA output.

Examples

## will only display in some locales and fonts
intToUtf8(0x03B2L) # Greek beta

utf8ToInt("bi\u00dfchen")
utf8ToInt("\xfa\xb4\xbf\xbf\x9f")

robertzk/monadicbase documentation built on May 27, 2019, 10:35 a.m.