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#![crate_id = "term#0.10"]
#![comment = "Simple ANSI color library"]
#![license = "MIT/ASL2"]
#![crate_type = "rlib"]
#![crate_type = "dylib"]
#![doc(html_logo_url = "http://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
html_favicon_url = "http://www.rust-lang.org/favicon.ico",
html_root_url = "http://static.rust-lang.org/doc/master")]
#![feature(macro_rules)]
#![deny(missing_doc)]
extern crate collections;
use std::io;
use std::os;
use terminfo::TermInfo;
use terminfo::searcher::open;
use terminfo::parser::compiled::{parse, msys_terminfo};
use terminfo::parm::{expand, Number, Variables};
pub mod terminfo;pub mod color {
pub type Color = u16;
pub static BLACK: Color = 0u16;
pub static RED: Color = 1u16;
pub static GREEN: Color = 2u16;
pub static YELLOW: Color = 3u16;
pub static BLUE: Color = 4u16;
pub static MAGENTA: Color = 5u16;
pub static CYAN: Color = 6u16;
pub static WHITE: Color = 7u16;
pub static BRIGHT_BLACK: Color = 8u16;
pub static BRIGHT_RED: Color = 9u16;
pub static BRIGHT_GREEN: Color = 10u16;
pub static BRIGHT_YELLOW: Color = 11u16;
pub static BRIGHT_BLUE: Color = 12u16;
pub static BRIGHT_MAGENTA: Color = 13u16;
pub static BRIGHT_CYAN: Color = 14u16;
pub static BRIGHT_WHITE: Color = 15u16;
}
pub mod attr {
pub enum Attr {
Bold,
Dim,
Italic(bool),
Underline(bool),
Blink,
Standout(bool),
Reverse,
Secure,
ForegroundColor(super::color::Color),
BackgroundColor(super::color::Color)
}
}
fn cap_for_attr(attr: attr::Attr) -> &'static str {
match attr {
attr::Bold => "bold",
attr::Dim => "dim",
attr::Italic(true) => "sitm",
attr::Italic(false) => "ritm",
attr::Underline(true) => "smul",
attr::Underline(false) => "rmul",
attr::Blink => "blink",
attr::Standout(true) => "smso",
attr::Standout(false) => "rmso",
attr::Reverse => "rev",
attr::Secure => "invis",
attr::ForegroundColor(_) => "setaf",
attr::BackgroundColor(_) => "setab"
}
}
pub struct Terminal<T> {
priv num_colors: u16,
priv out: T,
priv ti: ~TermInfo
}
impl<T: Writer> Terminal<T> {
pub fn new(out: T) -> Result<Terminal<T>, ~str> {
let term = match os::getenv("TERM") {
Some(t) => t,
None => return Err(~"TERM environment variable undefined")
};
let entry = open(term);
if entry.is_err() {
if "cygwin" == term {return Ok(Terminal {out: out, ti: msys_terminfo(), num_colors: 8});
}
return Err(entry.unwrap_err());
}
let mut file = entry.unwrap();
let ti = parse(&mut file, false);
if ti.is_err() {
return Err(ti.unwrap_err());
}
let inf = ti.unwrap();
let nc = if inf.strings.find_equiv(&("setaf")).is_some()
&& inf.strings.find_equiv(&("setab")).is_some() {
inf.numbers.find_equiv(&("colors")).map_or(0, |&n| n)
} else { 0 };
return Ok(Terminal {out: out, ti: inf, num_colors: nc});
}
pub fn fg(&mut self, color: color::Color) -> io::IoResult<bool> {
let color = self.dim_if_necessary(color);
if self.num_colors > color {
let s = expand(self.ti
.strings
.find_equiv(&("setaf"))
.unwrap()
.as_slice(),
[Number(color as int)], &mut Variables::new());
if s.is_ok() {
try!(self.out.write(s.unwrap().as_slice()));
return Ok(true)
}
}
Ok(false)
}
pub fn bg(&mut self, color: color::Color) -> io::IoResult<bool> {
let color = self.dim_if_necessary(color);
if self.num_colors > color {
let s = expand(self.ti
.strings
.find_equiv(&("setab"))
.unwrap()
.as_slice(),
[Number(color as int)], &mut Variables::new());
if s.is_ok() {
try!(self.out.write(s.unwrap().as_slice()));
return Ok(true)
}
}
Ok(false)
}
pub fn attr(&mut self, attr: attr::Attr) -> io::IoResult<bool> {
match attr {
attr::ForegroundColor(c) => self.fg(c),
attr::BackgroundColor(c) => self.bg(c),
_ => {
let cap = cap_for_attr(attr);
let parm = self.ti.strings.find_equiv(&cap);
if parm.is_some() {
let s = expand(parm.unwrap().as_slice(),
[],
&mut Variables::new());
if s.is_ok() {
try!(self.out.write(s.unwrap().as_slice()));
return Ok(true)
}
}
Ok(false)
}
}
}
pub fn supports_attr(&self, attr: attr::Attr) -> bool {
match attr {
attr::ForegroundColor(_) | attr::BackgroundColor(_) => {
self.num_colors > 0
}
_ => {
let cap = cap_for_attr(attr);
self.ti.strings.find_equiv(&cap).is_some()
}
}
}
pub fn reset(&mut self) -> io::IoResult<()> {
let mut cap = self.ti.strings.find_equiv(&("sgr0"));
if cap.is_none() {cap = self.ti.strings.find_equiv(&("sgr"));
if cap.is_none() {
cap = self.ti.strings.find_equiv(&("op"));
}
}
let s = cap.map_or(Err(~"can't find terminfo capability `sgr0`"), |op| {
expand(op.as_slice(), [], &mut Variables::new())
});
if s.is_ok() {
return self.out.write(s.unwrap().as_slice())
}
Ok(())
}
fn dim_if_necessary(&self, color: color::Color) -> color::Color {
if color >= self.num_colors && color >= 8 && color < 16 {
color-8
} else { color }
}
pub fn unwrap(self) -> T { self.out }
pub fn get_ref<'a>(&'a self) -> &'a T { &self.out }
pub fn get_mut<'a>(&'a mut self) -> &'a mut T { &mut self.out }
}
impl<T: Writer> Writer for Terminal<T> {
fn write(&mut self, buf: &[u8]) -> io::IoResult<()> {
self.out.write(buf)
}
fn flush(&mut self) -> io::IoResult<()> {
self.out.flush()
}
}