Convert Python bytes to an R character or raw vector — as.character.python.builtin.bytes (original) (raw)

Convert Python bytes to an R character or raw vector

# S3 method for class 'python.builtin.bytes'
as.character(
  x,
  encoding = "utf-8",
  errors = "strict",
  nul = stop("Embedded NUL in string."),
  ...
)

# S3 method for class 'python.builtin.bytes'
as.raw(x)

Arguments

x

object to be coerced or tested.

encoding

Encoding to use for conversion (defaults to utf-8)

errors

Policy for handling conversion errors. Default is 'strict' which raises an error. Other possible values are 'ignore' and 'replace'.

nul

Action to take if the bytes contain an embedded NUL (\x00). Python allows embedded NULs in strings, while R does not. There are four options for handling embedded NULs:

  1. Error: This is the default
  2. Replace: Supply a replacement string: nul = "<NUL>"
  3. Remove: Supply an empty string: nul = ""
  4. Split: Supply an R NULL to indicate that string should be split at embedded NUL bytes: nul = NULL

...

further arguments passed to or from other methods.

See also

Examples

if (FALSE) { # reticulate::py_available()
# A bytes object with embedded NULs
b <- import_builtins(convert = FALSE)$bytes(
  as.raw(c(0x61, 0x20, 0x62, 0x00, 0x63, 0x20, 0x64)) # "a b<NUL>c d"
)

try(as.character(b))            # Error : Embedded NUL in string.
as.character(b, nul = "<NUL>")  # Replace: "a b<NUL>c d"
as.character(b, nul = "")       # Remove: "a bc d"
as.character(b, nul = NULL)     # Split: "a b" "c d"
}