better-testing

VariableBuildStepImplementation.php
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			<?php

			abstract class VariableBuildStepImplementation extends BuildStepImplementation {

			/**
			* Convert a user-provided string with variables in it, like:
			*
			* ls ${dirname}
			*
			* ...into a string with variables merged into it safely:
			*
			* ls 'dir with spaces'
			*
			* @param string Name of a `vxsprintf` function, like @{function:vcsprintf}.
			* @param string User-provided pattern string containing `${variables}`.
			* @param dict List of available replacement variables.
			* @return string String with variables replaced safely into it.
			*/
			protected function mergeVariables($function, $pattern, array $variables) {
			$regexp = '/\\$\\{(?P<name>[a-z\\.]+)\\}/';

			$matches = null;
			preg_match_all($regexp, $pattern, $matches);

			$argv = array();
			foreach ($matches['name'] as $name) {
			if (!array_key_exists($name, $variables)) {
			throw new Exception(pht("No such variable '%s'!", $name));
			}
			$argv[] = $variables[$name];
			}

			$pattern = str_replace('%', '%%', $pattern);
			$pattern = preg_replace($regexp, '%s', $pattern);

			return call_user_func($function, $pattern, $argv);
			}

			public function getSettingRemarkupInstructions() {
			$variables = HarbormasterBuild::getAvailableBuildVariables();
			$text = '';
			$text .= pht('The following variables are available: ')."\n";
			$text .= "\n";
			foreach ($variables as $name => $desc) {
			$text .= ' - `'.$name.'`: '.$desc."\n";
			}
			$text .= "\n";
			$text .= "Use `\${name}` to merge a variable into a setting.";
			return $text;
			}

			}