gecko-dev/servo/ports/cef/command_line.rs

107 строки
3.8 KiB
Rust

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
use interfaces::cef_command_line_t;
use libc::{calloc, c_int, c_char, size_t};
use std::ffi;
use std::mem;
use std::slice;
use std::str;
use string as cef_string;
use string::cef_string_utf16_set;
use types::{cef_string_t, cef_string_userfree_t, cef_string_utf16_t};
type command_line_t = command_line;
struct command_line {
pub cl: cef_command_line_t,
pub argc: c_int,
pub argv: Vec<String>,
}
static mut GLOBAL_CMDLINE: Option<*mut command_line_t> = None;
fn command_line_new() -> *mut command_line_t {
unsafe {
let cl = calloc(1, mem::size_of::<command_line>() as size_t) as *mut command_line_t;
(*cl).cl.base.size = mem::size_of::<cef_command_line_t>() as size_t;
cl
}
}
pub fn command_line_init(argc: c_int, argv: *const *const u8) {
unsafe {
let args = slice::from_raw_parts(argv, argc as usize);
let a = args.iter().map(|&arg| {
let slice = ffi::CStr::from_ptr(arg as *const c_char);
str::from_utf8(slice.to_bytes()).unwrap().to_owned()
}).collect();
let cl = command_line_new();
(*cl).argc = argc;
(*cl).argv = a;
(*cl).cl.get_switch_value = Some(command_line_get_switch_value as extern "C" fn(*mut cef_command_line_t, *const cef_string_t) -> cef_string_userfree_t);
GLOBAL_CMDLINE = Some(cl);
}
}
#[no_mangle]
pub extern "C" fn command_line_get_switch_value(cmd: *mut cef_command_line_t, name: *const cef_string_t) -> cef_string_userfree_t {
if cmd.is_null() || name.is_null() {
return cef_string::empty_utf16_userfree_string()
}
unsafe {
//technically cef_string_t can be any type of character size
//but the default cef callback uses utf16, so I'm jumping on board the SS Copy
let cl: *mut command_line_t = mem::transmute(cmd);
let cs: *const cef_string_utf16_t = mem::transmute(name);
let buf = (*cs).str as *const _;
let slice = slice::from_raw_parts(buf, (*cs).length as usize);
let opt = String::from_utf16(slice).unwrap();
//debug!("opt: {}", opt);
for s in &(*cl).argv {
let o = s.trim_left_matches('-');
//debug!("arg: {}", o);
if o.starts_with(&opt) {
let mut string = mem::uninitialized();
let arg = o[opt.len() + 1..].as_bytes();
let c_str = ffi::CString::new(arg).unwrap();
cef_string_utf16_set(c_str.as_bytes().as_ptr() as *const _,
arg.len() as size_t,
&mut string,
1);
return cef_string::string_to_userfree_string(string)
}
}
}
return cef_string::empty_utf16_userfree_string()
}
#[no_mangle]
pub extern "C" fn cef_command_line_create() -> *mut cef_command_line_t {
unsafe {
let cl = command_line_new();
(*cl).cl.get_switch_value = Some(command_line_get_switch_value as extern "C" fn(*mut cef_command_line_t, *const cef_string_t) -> cef_string_userfree_t);
mem::transmute(cl)
}
}
#[no_mangle]
pub extern "C" fn cef_command_line_get_global() -> *mut cef_command_line_t {
unsafe {
match GLOBAL_CMDLINE {
Some(scl) => {
mem::transmute(scl)
},
None => {
0 as *mut cef_command_line_t
}
}
}
}
cef_stub_static_method_impls! {
fn cef_command_line_create_command_line() -> *mut cef_command_line_t
fn cef_command_line_get_global_command_line() -> *mut cef_command_line_t
}