ansi_nchar: Count number of characters in an ANSI colored string

In RonMobile/cli: Helpers for Developing Command Line Interfaces

Description

This is a color-aware counterpart of base::nchar(), which does not do well, since it also counts the ANSI control characters.

Usage

ansi_nchar(x, type = c("chars", "bytes", "width"), ...)

Arguments

x	Character vector, potentially ANSO styled, or a vector to be coarced to character.
type	Whether to count characters, bytes, or calculate the display width of the string. Passed to base::nchar().
...	Additional arguments, passed on to base::nchar() after removing ANSI escape sequences.

Value

Numeric vector, the length of the strings in the character vector.

See Also

Other ANSI string operations: ansi_align(), ansi_columns(), ansi_strsplit(), ansi_strtrim(), ansi_strwrap(), ansi_substring(), ansi_substr(), ansi_toupper(), ansi_trimws()

Examples

str <- paste(
  col_red("red"),
  "default",
  col_green("green")
)

cat(str, "\n")
nchar(str)
ansi_nchar(str)
nchar(ansi_strip(str))

RonMobile/cli documentation built on Dec. 18, 2021, 11 a.m.