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