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//! UTF-8 validation functions. //! //! Bindings are not provided here for most of the PulseAudio UTF-8 functions since Rust has built //! in UTF-8 handling and thus they should be entirely unnecessary. // This file is part of the PulseAudio Rust language binding. // // Copyright (c) 2017 Lyndon Brown // // This library is free software; you can redistribute it and/or modify it under the terms of the // GNU Lesser General Public License as published by the Free Software Foundation; either version // 2.1 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without // even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public License along with this library; // if not, see <http://www.gnu.org/licenses/>. use capi; use std::os::raw::{c_char, c_void}; use std::ffi::{CStr, CString}; /// Convert a UTF-8 string to the current locale. pub fn utf8_to_locale(s: &str) -> Option<String> { // Warning: New CStrings will be immediately freed if not bound to a variable, leading to // as_ptr() giving dangling pointers! let c_str = CString::new(s.clone()).unwrap(); let tmp_ptr: *const c_char = unsafe { capi::pa_utf8_to_locale(c_str.as_ptr()) }; if tmp_ptr.is_null() { return None; } unsafe { let ret = Some(CStr::from_ptr(tmp_ptr).to_string_lossy().into_owned()); capi::pa_xfree(tmp_ptr as *mut c_void); ret } }