openethereum/parity/url.rs

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// Copyright 2015-2017 Parity Technologies (UK) Ltd.
// This file is part of Parity.
// Parity is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// Parity 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 General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Parity. If not, see <http://www.gnu.org/licenses/>.
//! Cross-platform open url in default browser
use std;
use std::os::raw::c_int;
#[allow(unused)]
pub enum Error {
ProcessError(std::io::Error),
WindowsShellExecute(c_int),
}
impl From<std::io::Error> for Error {
fn from(err: std::io::Error) -> Self {
Error::ProcessError(err)
}
}
impl std::fmt::Display for Error {
fn fmt(&self, f: &mut std::fmt::Formatter) -> Result<(), std::fmt::Error> {
match *self {
Error::ProcessError(ref e) => write!(f, "{}", e),
Error::WindowsShellExecute(e) => write!(f, "WindowsShellExecute error: {}", e),
}
}
}
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#[cfg(windows)]
pub fn open(url: &str) -> Result<(), Error> {
use std::ffi::CString;
use std::ptr;
use winapi::um::shellapi::ShellExecuteA;
use winapi::um::winuser::SW_SHOWNORMAL as Normal;
const WINDOWS_SHELL_EXECUTE_SUCCESS: c_int = 32;
let h_instance = unsafe {
ShellExecuteA(ptr::null_mut(),
CString::new("open").unwrap().as_ptr(),
CString::new(url.to_owned().replace("\n", "%0A")).unwrap().as_ptr(),
ptr::null(),
ptr::null(),
Normal) as c_int
};
// https://msdn.microsoft.com/en-us/library/windows/desktop/bb762153(v=vs.85).aspx
// `ShellExecute` returns a value greater than 32 on success
if h_instance > WINDOWS_SHELL_EXECUTE_SUCCESS {
Ok(())
} else {
Err(Error::WindowsShellExecute(h_instance))
}
}
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#[cfg(any(target_os="macos", target_os="freebsd"))]
pub fn open(url: &str) -> Result<(), Error> {
let _ = std::process::Command::new("open").arg(url).spawn()?;
Ok(())
}
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#[cfg(target_os="linux")]
pub fn open(url: &str) -> Result<(), Error> {
let _ = std::process::Command::new("xdg-open").arg(url).spawn()?;
Ok(())
}
#[cfg(target_os="android")]
pub fn open(_url: &str) -> Result<(), Error> {
// TODO: While it is generally always bad to leave a function implemented, there is not much
// more we can do here. This function will eventually be removed when we compile Parity
// as a library and not as a full binary.
Ok(())
}