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#[link(name = "term", vers = "0.0.1", author = "doy")];
#[crate_type = "lib"];
use core::libc::c_int;
pub use ios::{cooked,cbreak,raw,echo,size};
use info::{init,escape,escape2};
use util::Trie;
struct Writer {
priv buf: ~str,
priv cleanup: bool,
}
pub fn Writer (cleanup: bool) -> Writer {
init();
Writer { buf: ~"", cleanup: cleanup }
}
impl Writer {
pub fn clear (&mut self) {
str::push_str(&mut self.buf, escape("clear"));
}
pub fn move (&mut self, col: uint, row: uint) {
if col == 0u && row == 0u {
str::push_str(&mut self.buf, escape("home"));
}
else {
str::push_str(&mut self.buf,
escape2("cup", row as int, col as int));
}
}
pub fn cursor (&mut self, enabled: bool) {
if enabled {
str::push_str(&mut self.buf, escape("civis"));
}
else {
str::push_str(&mut self.buf, escape("cnorm"));
}
}
pub fn alternate_screen (&mut self, enable: bool) {
if enable {
str::push_str(&mut self.buf, escape("smcup"));
}
else {
str::push_str(&mut self.buf, escape("rmcup"));
}
}
pub fn write (&mut self, text: &str) {
str::push_str(&mut self.buf, text);
}
pub fn flush (&mut self) {
io::print(self.buf);
io::stdout().flush();
self.buf = ~"";
}
}
impl Drop for Writer {
fn finalize (&self) {
if self.cleanup {
io::print(escape("rmcup"));
io::print(escape("sgr0"));
io::print(escape("cnorm"));
}
}
}
enum Keypress {
KeyCharacter(char),
KeyBackspace,
KeyReturn,
KeyTab,
KeyCtrl(char),
KeyF(int),
KeyUp,
KeyDown,
KeyLeft,
KeyRight,
KeyHome,
KeyEnd,
KeyInsert,
KeyDelete,
KeyEscape,
}
struct Reader {
priv escapes: ~Trie<Keypress>,
priv buf: ~str,
priv cleanup: bool,
}
pub fn Reader (cleanup: bool) -> Reader {
io::print(escape("smkx"));
Reader { escapes: build_escapes_trie(), buf: ~"", cleanup: cleanup }
}
impl Reader {
pub fn read (&mut self) -> Option<Keypress> {
if str::len(self.buf) > 0 {
return Some(self.next_key());
}
let first = util::timed_read(-1);
if first.is_none() {
return None;
}
let mut buf = str::from_char(*first.get_ref());
loop {
if !self.escapes.has_prefix(buf) {
/* XXX i think this is a borrow check bug, should look into
* it at some point */
//return match self.escapes.find(buf) {
// &Some(k) => { Some(k) }
// &None => {
// self.unget(buf);
// self.read()
// }
//}
{
let k = self.escapes.find(buf);
if k.is_some() {
return *k;
}
}
self.unget(buf);
return self.read();
}
match util::timed_read(1000000) {
Some(next) => { str::push_char(&mut buf, next) }
None => {
self.unget(buf);
return self.read();
}
}
}
}
fn unget (&mut self, buf: &str) {
str::push_str(&mut self.buf, buf);
}
fn next_key (&mut self) -> Keypress {
fail_unless!(str::len(self.buf) > 0);
for uint::range_rev(str::len(self.buf), 0) |i| {
match self.escapes.find(str::slice(self.buf, 0, i)) {
&Some(k) => {
for uint::range(0, i) |_| {
str::shift_char(&mut self.buf);
}
return k
}
&None => { }
}
}
let next = str::shift_char(&mut self.buf);
return KeyCharacter(next);
}
}
impl Drop for Reader {
fn finalize (&self) {
if self.cleanup {
io::print(escape("rmkx"));
}
}
}
// XXX this whole thing needs to be able to deal with caps that don't exist
fn build_escapes_trie () -> ~Trie<Keypress> {
let mut trie = ~Trie();
trie.insert(escape("kbs"), KeyBackspace);
trie.insert(escape("cr"), KeyReturn);
trie.insert(escape("ht"), KeyTab);
trie.insert(escape("kcuu1"), KeyUp);
trie.insert(escape("kcud1"), KeyDown);
trie.insert(escape("kcub1"), KeyLeft);
trie.insert(escape("kcuf1"), KeyRight);
trie.insert(escape("khome"), KeyHome);
trie.insert(escape("kend"), KeyEnd);
trie.insert(escape("kich1"), KeyInsert);
trie.insert(escape("kdch1"), KeyDelete);
for uint::range(1, 12) |i| {
trie.insert(escape(fmt!("kf%d", i as int)), KeyF(i as int));
}
for uint::range(1, 26) |i| {
let s = str::from_char(i as char);
if (trie.find(s).is_none()) {
trie.insert(s, KeyCtrl(i as char));
}
}
trie.insert(str::from_char(27 as char), KeyEscape);
trie
}
pub fn isatty() -> bool {
unsafe { c_isatty(0) as bool }
}
pub mod ios;
pub mod info;
mod util;
extern {
#[link_name = "isatty"]
fn c_isatty(fd: c_int) -> c_int;
}
|
