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@ -10,49 +10,60 @@ use color::Color;
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pub trait TermWrite {
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/// Print the CSI (control sequence introducer) followed by a byte string.
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#[inline]
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fn csi(&mut self, b: &[u8]) -> io::Result<usize>;
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/// Print OSC (operating system command) followed by a byte string.
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#[inline]
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fn osc(&mut self, b: &[u8]) -> io::Result<usize>;
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/// Print DSC (device control string) followed by a byte string.
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#[inline]
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fn dsc(&mut self, b: &[u8]) -> io::Result<usize>;
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/// Clear the entire screen.
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#[inline]
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fn clear(&mut self) -> io::Result<usize> {
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self.csi(b"2J")
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}
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/// Clear everything _after_ the cursor.
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#[inline]
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fn clear_after(&mut self) -> io::Result<usize> {
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self.csi(b"J")
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}
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/// Clear everything _before_ the cursor.
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#[inline]
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fn clear_before(&mut self) -> io::Result<usize> {
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self.csi(b"1J")
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}
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/// Clear the current line.
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#[inline]
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fn clear_line(&mut self) -> io::Result<usize> {
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self.csi(b"2K")
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}
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/// Clear from the cursor until newline.
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#[inline]
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fn clear_until_newline(&mut self) -> io::Result<usize> {
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self.csi(b"K")
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}
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/// Show the cursor.
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#[inline]
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fn show_cursor(&mut self) -> io::Result<usize> {
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self.csi(b"?25h")
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}
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/// Hide the cursor.
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#[inline]
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fn hide_cursor(&mut self) -> io::Result<usize> {
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self.csi(b"?25l")
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}
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/// Move the cursor `num` spaces to the left.
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#[inline]
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fn move_cursor_left(&mut self, num: u32) -> io::Result<usize> {
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if num > 0 {
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self.csi(&[b'0' + (num / 10000) as u8,
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@ -66,6 +77,7 @@ pub trait TermWrite {
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}
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}
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/// Move the cursor `num` spaces to the right.
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#[inline]
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fn move_cursor_right(&mut self, num: u32) -> io::Result<usize> {
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if num > 0 {
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self.csi(&[b'0' + (num / 10000) as u8,
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@ -82,6 +94,7 @@ pub trait TermWrite {
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/// Reset the rendition mode.
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///
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/// This will reset both the current style and color.
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#[inline]
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fn reset(&mut self) -> io::Result<usize> {
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self.csi(b"m")
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}
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@ -90,6 +103,7 @@ pub trait TermWrite {
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///
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/// This will reset color, position, cursor state, and so on. It is recommended that you use
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/// this before you exit your program, to avoid messing up the user's terminal.
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#[inline]
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fn restore(&mut self) -> io::Result<usize> {
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Ok(try!(self.reset()) + try!(self.clear()) + try!(self.goto(0, 0)) + try!(self.show_cursor()))
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}
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@ -97,6 +111,7 @@ pub trait TermWrite {
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/// Go to a given position.
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///
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/// The position is 0-based.
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#[inline]
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fn goto(&mut self, mut x: u16, mut y: u16) -> io::Result<usize> {
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x += 1;
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y += 1;
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@ -118,6 +133,7 @@ pub trait TermWrite {
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}
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/// Set graphic rendition.
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#[inline]
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fn rendition(&mut self, r: u8) -> io::Result<usize> {
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self.csi(&[
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b'0' + r / 100,
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@ -128,6 +144,7 @@ pub trait TermWrite {
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}
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/// Set foreground color.
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#[inline]
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fn color<C: Color>(&mut self, color: C) -> io::Result<usize> {
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let ansi = color.to_ansi_val();
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self.csi(&[
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@ -144,6 +161,7 @@ pub trait TermWrite {
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}
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/// Set background color.
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#[inline]
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fn bg_color<C: Color>(&mut self, color: C) -> io::Result<usize> {
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let ansi = color.to_ansi_val();
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self.csi(&[
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@ -160,20 +178,24 @@ pub trait TermWrite {
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}
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/// Set rendition mode (SGR).
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#[inline]
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fn style(&mut self, mode: Style) -> io::Result<usize> {
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self.rendition(mode as u8)
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}
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}
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impl<W: Write> TermWrite for W {
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#[inline]
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fn csi(&mut self, b: &[u8]) -> io::Result<usize> {
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Ok(try!(self.write(b"\x1B[")) + try!(self.write(b)))
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}
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#[inline]
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fn osc(&mut self, b: &[u8]) -> io::Result<usize> {
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Ok(try!(self.write(b"\x1B]")) + try!(self.write(b)))
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}
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#[inline]
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fn dsc(&mut self, b: &[u8]) -> io::Result<usize> {
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Ok(try!(self.write(b"\x1BP")) + try!(self.write(b)))
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}
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