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extern crate term;
use matcher::Match;
use std::io;
use std::io::Write;
use std::process;
use term::color::Color;
use term::{StderrTerminal, StdoutTerminal};
pub enum ConsoleTextKind {
Filename,
Text,
MatchText,
Other,
Info,
Error,
}
pub struct Console {
pub is_color: bool,
term_stdout: Box<StdoutTerminal>,
term_stderr: Box<StderrTerminal>,
color_out: Color,
color_err: Color,
colored_out: bool,
colored_err: bool,
}
impl Console {
pub fn new() -> Self {
Console {
term_stdout: term::stdout().unwrap_or_else(|| {
process::exit(1);
}),
term_stderr: term::stderr().unwrap_or_else(|| {
process::exit(1);
}),
is_color: true,
color_out: term::color::BLACK,
color_err: term::color::BLACK,
colored_out: false,
colored_err: false,
}
}
pub fn carriage_return(&mut self) {
let _ = self.term_stdout.carriage_return();
}
pub fn cursor_up(&mut self) {
let _ = self.term_stdout.cursor_up();
}
pub fn delete_line(&mut self) {
let _ = self.term_stdout.delete_line();
}
pub fn write_with_clear(&mut self, kind: ConsoleTextKind, val: &str) {
self.carriage_return();
self.delete_line();
self.write(kind, val);
}
pub fn write(&mut self, kind: ConsoleTextKind, val: &str) {
let color = match kind {
ConsoleTextKind::Filename => term::color::BRIGHT_GREEN,
ConsoleTextKind::Text => term::color::WHITE,
ConsoleTextKind::MatchText => term::color::BRIGHT_YELLOW,
ConsoleTextKind::Other => term::color::BRIGHT_CYAN,
ConsoleTextKind::Info => term::color::BRIGHT_CYAN,
ConsoleTextKind::Error => term::color::BRIGHT_RED,
};
match kind {
ConsoleTextKind::Error => self.write_stderr(val, color),
ConsoleTextKind::Info => self.write_stderr(val, color),
_ => self.write_stdout(val, color),
}
}
pub fn flush(&mut self) {
let _ = io::stdout().flush();
let _ = io::stderr().flush();
}
pub fn reset(&mut self) {
self.term_stdout.reset().unwrap_or_else(|_| {
process::exit(1);
});
self.term_stderr.reset().unwrap_or_else(|_| {
process::exit(1);
});
}
pub fn write_match_line(&mut self, src: &[u8], m: &Match) {
let mut beg = m.beg;
let mut end = m.end;
while beg > 0 {
if src[beg] == 0x0d || src[beg] == 0x0a {
beg += 1;
break;
}
beg -= 1;
}
while src.len() > end {
if src[end] == 0x0d || src[end] == 0x0a {
end -= 1;
break;
}
end += 1;
}
if src.len() <= end {
end = src.len()
} else {
end += 1
};
if beg < m.beg {
self.write(ConsoleTextKind::Text, &String::from_utf8_lossy(&src[beg..m.beg]));
}
self.write(ConsoleTextKind::MatchText, &String::from_utf8_lossy(&src[m.beg..m.end]));
if m.end < end {
self.write(ConsoleTextKind::Text, &String::from_utf8_lossy(&src[m.end..end]));
}
self.write(ConsoleTextKind::Text, "\n");
}
fn write_stdout(&mut self, val: &str, color: Color) {
if self.is_color {
if self.color_out != color {
self.term_stdout.fg(color).unwrap_or_else(|_| {
process::exit(1);
});
self.color_out = color;
self.colored_out = true;
}
}
write!(self.term_stdout, "{}", val).unwrap_or_else(|_| {
process::exit(1);
});
}
fn write_stderr(&mut self, val: &str, color: Color) {
if self.is_color {
if self.color_err != color {
self.term_stderr.fg(color).unwrap_or_else(|_| {
process::exit(1);
});
self.color_err = color;
self.colored_err = true;
}
}
write!(self.term_stderr, "{}", val).unwrap_or_else(|_| {
process::exit(1);
});
}
}