1 files changed, 52 insertions, 0 deletions
diff --git a/shell/bin/grep.php b/shell/bin/grep.php
new file mode 100644
index 0000000..c73b911
--- /dev/null
+++ b/shell/bin/grep.php
@@ -0,0 +1,52 @@
+<?php
+class p_grep extends prog {
+	public static function flag($flags,$flag) {
+		return (strpos($flags,$flag)!==false);
+	}
+	public static function recurse_grep($pattern, $subject, $flags = '') {
+		// Do a breadth-first search
+		$dirs = array();
+		if ( is_dir($subject) ) {
+			$dirs[] = $subject;
+		} else {
+			self::grep($pattern, $subject, $flags);
+		}
+		foreach($dirs as $dir) {
+			$dh = opendir($dir);
+			while(false !== ( $file = readdir($dh)) ) {
+				if (( $file != '.' ) && ( $file != '..' )) {
+					self::recurse_grep($pattern, $subject.'/'.$file, $flags);
+				}
+			}
+			closedir($dh);
+		}
+	}
+
+	public static function grep($pattern, $file, $flags) {
+		$lines = preg_split("/\r\n/",file_get_contents($file));
+		foreach ($lines as $line_number => $line_contents) {
+			if (preg_match($pattern,$line_contents)>0) {
+				if (
+					   (self::flag($flags,'r') && !self::flag($flags,'h')) // recursive
+					|| (self::flag($flags,'H')) // or explicit
+				) { echo htmlentities($file).': '; }
+				if (self::flag($flags,'n')) { echo $line_number.': '; }
+				echo htmlentities($line_contents)."\n";
+			}
+		}
+	}
+
+	public static function main($args, $env) {
+		$me = array_shift($args);
+		$flags = '';
+		while (substr($args[0],0,1) == '-') {
+			$flags .= array_shift($args);
+		}
+		$flags = preg_replace('/[ -]/','',$flags);
+		$pattern = array_shift($args);
+		foreach ($args as $file) {
+			if (self::flag($flags,'r')) { self::recurse_grep($pattern, $file, $flags); }
+			else {                           self::grep($pattern, $file, $flags); }
+		}
+	}
+}