Struct pm_encoding_t

#[repr(C)]
pub struct pm_encoding_t {
    pub char_width: Option<unsafe extern "C" fn(b: *const u8, n: isize) -> usize>,
    pub alpha_char: Option<unsafe extern "C" fn(b: *const u8, n: isize) -> usize>,
    pub alnum_char: Option<unsafe extern "C" fn(b: *const u8, n: isize) -> usize>,
    pub isupper_char: Option<unsafe extern "C" fn(b: *const u8, n: isize) -> bool>,
    pub name: *const c_char,
    pub multibyte: bool,
}

This struct defines the functions necessary to implement the encoding interface so we can determine how many bytes the subsequent character takes. Each callback should return the number of bytes, or 0 if the next bytes are invalid for the encoding and type.

Fields

char_width: Option<unsafe extern "C" fn(b: *const u8, n: isize) -> usize>

Return the number of bytes that the next character takes if it is valid in the encoding. Does not read more than n bytes. It is assumed that n is at least 1.

alpha_char: Option<unsafe extern "C" fn(b: *const u8, n: isize) -> usize>

Return the number of bytes that the next character takes if it is valid in the encoding and is alphabetical. Does not read more than n bytes. It is assumed that n is at least 1.

alnum_char: Option<unsafe extern "C" fn(b: *const u8, n: isize) -> usize>

Return the number of bytes that the next character takes if it is valid in the encoding and is alphanumeric. Does not read more than n bytes. It is assumed that n is at least 1.

isupper_char: Option<unsafe extern "C" fn(b: *const u8, n: isize) -> bool>

Return true if the next character is valid in the encoding and is an uppercase character. Does not read more than n bytes. It is assumed that n is at least 1.

name: *const c_char

The name of the encoding. This should correspond to a value that can be passed to Encoding.find in Ruby.

multibyte: bool

Return true if the encoding is a multibyte encoding.

Trait Implementations

impl Clone for pm_encoding_t

fn clone(&self) -> pm_encoding_t

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for pm_encoding_t

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for pm_encoding_t

fn default() -> Self

Returns the “default value” for a type.

impl Copy for pm_encoding_t