Count number of characters in an ANSI colored string

Source: R/ansiex.R

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

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_trimws()

Examples

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

cat(str, "\n")

#> red default green 
nchar(str)

#> [1] 37
ansi_nchar(str)

#> [1] 17
nchar(ansi_strip(str))

#> [1] 17