Jeremy Soller
75 lines
2.3 KiB
Rust
75 lines
2.3 KiB
Rust
//! `locale.h` implementation.
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//!
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//! See <https://pubs.opengroup.org/onlinepubs/9799919799/basedefs/locale.h.html>.
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use core::ptr;
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use crate::platform::types::{c_char, c_int, c_void};
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const EMPTY_PTR: *const c_char = "\0" as *const _ as *const c_char;
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// Can't use &str because of the mutability
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static mut C_LOCALE: [c_char; 2] = [b'C' as c_char, 0];
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//TODO: locale_t internals
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pub type locale_t = *mut c_void;
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/// See <https://pubs.opengroup.org/onlinepubs/9799919799/basedefs/locale.h.html>.
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#[repr(C)]
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pub struct lconv {
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currency_symbol: *const c_char,
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decimal_point: *const c_char,
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frac_digits: c_char,
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grouping: *const c_char,
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int_curr_symbol: *const c_char,
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int_frac_digits: c_char,
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mon_decimal_point: *const c_char,
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mon_grouping: *const c_char,
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mon_thousands_sep: *const c_char,
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negative_sign: *const c_char,
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n_cs_precedes: c_char,
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n_sep_by_space: c_char,
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n_sign_posn: c_char,
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positive_sign: *const c_char,
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p_cs_precedes: c_char,
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p_sep_by_space: c_char,
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p_sign_posn: c_char,
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thousands_sep: *const c_char,
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}
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unsafe impl Sync for lconv {}
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// Mutable because POSIX demands a mutable pointer, even though it warns
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// against mutating it
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static mut CURRENT_LOCALE: lconv = lconv {
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currency_symbol: EMPTY_PTR,
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decimal_point: ".\0" as *const _ as *const c_char,
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frac_digits: c_char::max_value(),
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grouping: EMPTY_PTR,
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int_curr_symbol: EMPTY_PTR,
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int_frac_digits: c_char::max_value(),
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mon_decimal_point: EMPTY_PTR,
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mon_grouping: EMPTY_PTR,
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mon_thousands_sep: EMPTY_PTR,
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negative_sign: EMPTY_PTR,
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n_cs_precedes: c_char::max_value(),
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n_sep_by_space: c_char::max_value(),
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n_sign_posn: c_char::max_value(),
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positive_sign: EMPTY_PTR,
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p_cs_precedes: c_char::max_value(),
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p_sep_by_space: c_char::max_value(),
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p_sign_posn: c_char::max_value(),
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thousands_sep: EMPTY_PTR,
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};
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/// See <https://pubs.opengroup.org/onlinepubs/9799919799/functions/localeconv.html>.
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#[unsafe(no_mangle)]
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pub unsafe extern "C" fn localeconv() -> *mut lconv {
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&raw mut CURRENT_LOCALE as *mut _
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}
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/// See <https://pubs.opengroup.org/onlinepubs/9799919799/functions/setlocale.html>.
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#[unsafe(no_mangle)]
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pub unsafe extern "C" fn setlocale(_option: c_int, _val: *const c_char) -> *mut c_char {
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// TODO actually implement
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&raw mut C_LOCALE as *mut c_char
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}
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