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/* NSC -- new Scala compiler
* Copyright 2005-2012 LAMP/EPFL
* @author Paul Phillips
*/
package scala.tools.util
package color
import collection.mutable
object Ansi {
final val ESC = '\u001b' // <esc>
final val LBR = '\u005b' // [
final val CSI = new String(Array(ESC, LBR)) // control sequence introducer
final val CSI_FINAL = "m" // control sequence final byte
def colors = List(Black, Red, Green, Yellow, Blue, Magenta, Cyan, White)
def effects = List(Reset, Bright, Faint, Italic, Underline, Blink, Inverse, Hidden, Strikethrough)
// No, that's not the finale of "CSI: Crime Scene Investigation."
def colorizerFor(codes: Seq[Int]): String => String =
s => ansiCodeToString(codes) + s + ansiCodeToString(0)
def ansiCodeToString(code: Int): String = CSI + code + CSI_FINAL
def ansiCodeToString(codes: Seq[Int]): String = codes.mkString(CSI, ";", CSI_FINAL)
}
/** An ansi control sequence. The colorize function prepends
* the control sequence to the given String and appends a
* reset sequence.
*/
class Ansi(atoms0: List[AnsiAtom]) {
val atoms = atoms0 sortBy (x => (!x.isAttr, x.isInstanceOf[AnsiBackground]))
val colorize = Ansi colorizerFor codes
def codes = atoms map (_.code)
def /(that: AnsiAtom) = new Ansi(atoms :+ that)
// This looks redundant with / , but isn't - it is a way
// to ensure that the argument will be a background color,
// even if a foreground color is passed as an argument
// (as it will be implicitly converted.)
def on(that: AnsiBackground) = this / that
// Convenience functions.
def reset = this / Reset
def bright = this / Bright
def faint = this / Faint
def italic = this / Italic
def underline = this / Underline
def blink = this / Blink
def inverse = this / Inverse
def hidden = this / Hidden
def strikethrough = this / Strikethrough
// adjectives first
override def toString = atoms mkString " "
}
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