1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
|
// Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
//! Terminfo database interface.
use std::collections::HashMap;
use std::io::IoResult;
use std::os;
use attr;
use color;
use Terminal;
use self::searcher::open;
use self::parser::compiled::{parse, msys_terminfo};
use self::parm::{expand, Number, Variables};
/// A parsed terminfo database entry.
#[deriving(Show)]
pub struct TermInfo {
/// Names for the terminal
pub names: Vec<String> ,
/// Map of capability name to boolean value
pub bools: HashMap<String, bool>,
/// Map of capability name to numeric value
pub numbers: HashMap<String, u16>,
/// Map of capability name to raw (unexpanded) string
pub strings: HashMap<String, Vec<u8> >
}
pub mod searcher;
/// TermInfo format parsing.
pub mod parser {
//! ncurses-compatible compiled terminfo format parsing (term(5))
pub mod compiled;
}
pub mod parm;
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"
}
}
/// A Terminal that knows how many colors it supports, with a reference to its
/// parsed Terminfo database record.
pub struct TerminfoTerminal<T> {
num_colors: u16,
out: T,
ti: Box<TermInfo>
}
impl<T: Writer> Terminal<T> for TerminfoTerminal<T> {
fn new(out: T) -> Option<TerminfoTerminal<T>> {
let term = match os::getenv("TERM") {
Some(t) => t,
None => {
debug!("TERM environment variable not defined");
return None;
}
};
let entry = open(term.as_slice());
if entry.is_err() {
if os::getenv("MSYSCON").map_or(false, |s| {
"mintty.exe" == s.as_slice()
}) {
// msys terminal
return Some(TerminfoTerminal {out: out, ti: msys_terminfo(), num_colors: 8});
}
debug!("error finding terminfo entry: {}", entry.err().unwrap());
return None;
}
let mut file = entry.unwrap();
let ti = parse(&mut file, false);
if ti.is_err() {
debug!("error parsing terminfo entry: {}", ti.unwrap_err());
return None;
}
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 Some(TerminfoTerminal {out: out, ti: inf, num_colors: nc});
}
fn fg(&mut self, color: color::Color) -> 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)
}
fn bg(&mut self, color: color::Color) -> 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)
}
fn attr(&mut self, attr: attr::Attr) -> 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)
}
}
}
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()
}
}
}
fn reset(&mut self) -> IoResult<()> {
let mut cap = self.ti.strings.find_equiv(&("sgr0"));
if cap.is_none() {
// are there any terminals that have color/attrs and not sgr0?
// Try falling back to sgr, then op
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`".to_string()), |op| {
expand(op.as_slice(), [], &mut Variables::new())
});
if s.is_ok() {
return self.out.write(s.unwrap().as_slice())
}
Ok(())
}
fn unwrap(self) -> T { self.out }
fn get_ref<'a>(&'a self) -> &'a T { &self.out }
fn get_mut<'a>(&'a mut self) -> &'a mut T { &mut self.out }
}
impl<T: Writer> TerminfoTerminal<T> {
fn dim_if_necessary(&self, color: color::Color) -> color::Color {
if color >= self.num_colors && color >= 8 && color < 16 {
color-8
} else { color }
}
}
impl<T: Writer> Writer for TerminfoTerminal<T> {
fn write(&mut self, buf: &[u8]) -> IoResult<()> {
self.out.write(buf)
}
fn flush(&mut self) -> IoResult<()> {
self.out.flush()
}
}
|
