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<?php
class PHP_Shell_Extensions_Colour implements PHP_Shell_Extension {
static protected $instance;
# shell colours
const C_RESET = "\033[0m";
const C_BLACK = "\033[0;30m";
const C_RED = "\033[0;31m";
const C_GREEN = "\033[0;32m";
const C_BROWN = "\033[0;33m";
const C_BLUE = "\033[0;34m";
const C_PURPLE = "\033[0;35m";
const C_CYAN = "\033[0;36m";
const C_LIGHT_GRAY = "\033[0;37m";
const C_GRAY = "\033[1;30m";
const C_LIGHT_RED = "\033[1;31m";
const C_LIGHT_GREEN = "\033[1;32m";
const C_YELLOW = "\033[1;33m";
const C_LIGHT_BLUE = "\033[1;34m";
const C_LIGHT_PURPLE = "\033[1;35m";
const C_LIGHT_CYAN = "\033[1;36m";
const C_WHITE = "\033[1;37m";
/**
* shell colours
*
* @var array
* @see applyColourScheme
*/
protected $colours;
/**
* shell colour schemes
*
* @var array
* @see registerColourScheme
*/
protected $colour_scheme;
public function register() {
$opt = PHP_Shell_Options::getInstance();
$opt->registerOption("background", $this, "optSetBackground");
$opt->registerOptionAlias("bg", "background");
$this->registerColourScheme(
"plain", array(
"default" => "", "value" => "",
"exception" => "", "reset" => ""));
$this->registerColourScheme(
"dark", array(
"default" => self::C_YELLOW,
"value" => self::C_WHITE,
"exception" => self::C_PURPLE));
$this->registerColourScheme(
"light", array(
"default" => self::C_BLACK,
"value" => self::C_BLUE,
"exception" => self::C_RED));
}
/**
* background colours
*/
public function optSetBackground($key, $value) {
if (is_null($value)) {
print(':set '.$key.' needs a colour-scheme, e.g. :set '.$key.'=dark');
return;
}
if (false == $this->applyColourScheme($value)) {
print('setting colourscheme failed: colourscheme '.$value.' is unknown');
return;
}
}
/**
* get a colour for the shell
*
* @param string $type one of (value|exception|reset|default)
* @return string a colour string or a empty string
*/
public function getColour($type) {
return isset($this->colour[$type]) ? $this->colour[$type] : '';
}
/**
* apply a colour scheme to the current shell
*
* @param string $scheme name of the scheme
* @return false if colourscheme is not known, otherwise true
*/
public function applyColourScheme($scheme) {
if (!isset($this->colour_scheme[$scheme])) return false;
$this->colour = $this->colour_scheme[$scheme];
return true;
}
/**
* registers a colour scheme
*
* @param string $scheme name of the colour scheme
* @param array a array of colours
*/
public function registerColourScheme($scheme, $colours) {
if (!is_array($colours)) return;
/* set a reset colour if it is not supplied from the outside */
if (!isset($colours["reset"])) $colours["reset"] = self::C_RESET;
$this->colour_scheme[$scheme] = $colours;
}
}
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