From 012a46da61e1184eac39c4158bedebec15a8d3a5 Mon Sep 17 00:00:00 2001
From: xdrm-brackets <doowap31@gmail.com>
Date: Mon, 20 Feb 2017 22:50:21 +0100
Subject: [PATCH] [Update] Optimized /lib/gpio methods to use shell only

---
 lib/gpio/high            | 42 ++++++++++++++++++-
 lib/gpio/in              | 42 ++++++++++++++++++-
 lib/gpio/low             | 42 ++++++++++++++++++-
 lib/gpio/out             | 42 ++++++++++++++++++-
 lib/gpio/source/Pin.php  | 90 ----------------------------------------
 lib/gpio/source/high.php | 41 ------------------
 lib/gpio/source/in.php   | 41 ------------------
 lib/gpio/source/low.php  | 41 ------------------
 lib/gpio/source/out.php  | 41 ------------------
 9 files changed, 164 insertions(+), 258 deletions(-)
 delete mode 100755 lib/gpio/source/Pin.php
 delete mode 100755 lib/gpio/source/high.php
 delete mode 100755 lib/gpio/source/in.php
 delete mode 100755 lib/gpio/source/low.php
 delete mode 100755 lib/gpio/source/out.php

diff --git a/lib/gpio/high b/lib/gpio/high
index bd5e9ed..b38f1c5 100755
--- a/lib/gpio/high
+++ b/lib/gpio/high
@@ -1,3 +1,43 @@
 #!/bin/sh
 
-/usr/bin/env php $(realpath $(dirname $0))/source/high.php $1;
+
+# [1] If empty pin number
+#========================================================#
+if [ -z "$1" ]; then
+
+	echo 127;
+	exit 127;
+fi;
+
+
+
+# [2] Check if valid pin number (integer)
+#========================================================#
+test $1 -ge 0 2> /dev/null;
+
+if [ $? -gt 1 ]; then
+
+	echo 127;
+	exit 127;
+
+fi;
+
+
+
+# [3] Activate (if not already)
+#========================================================#
+test -d /sys/class/gpio/gpio$1 || echo $1 > /sys/class/gpio/export;
+
+
+
+# [4] Set mode to OUT
+#========================================================#
+echo 1 > /sys/class/gpio/gpio$1/value;
+
+
+
+
+# [5] EXIT_CODE
+#========================================================#
+echo 0;
+exit 0;
diff --git a/lib/gpio/in b/lib/gpio/in
index 1c9fdb3..d58957b 100755
--- a/lib/gpio/in
+++ b/lib/gpio/in
@@ -1,3 +1,43 @@
 #!/bin/sh
 
-/usr/bin/env php $(realpath $(dirname $0))/source/in.php $1;
+
+# [1] If empty pin number
+#========================================================#
+if [ -z "$1" ]; then
+
+	echo 127;
+	exit 127;
+fi;
+
+
+
+# [2] Check if valid pin number (integer)
+#========================================================#
+test $1 -ge 0 2> /dev/null;
+
+if [ $? -gt 1 ]; then
+
+	echo 127;
+	exit 127;
+
+fi;
+
+
+
+# [3] Activate (if not already)
+#========================================================#
+test -d /sys/class/gpio/gpio$1 || echo $1 > /sys/class/gpio/export;
+
+
+
+# [4] Set mode to OUT
+#========================================================#
+echo "in" > /sys/class/gpio/gpio$1/direction;
+
+
+
+
+# [5] EXIT_CODE
+#========================================================#
+echo 0;
+exit 0;
diff --git a/lib/gpio/low b/lib/gpio/low
index 764325d..db7a24e 100755
--- a/lib/gpio/low
+++ b/lib/gpio/low
@@ -1,3 +1,43 @@
 #!/bin/sh
 
-/usr/bin/env php $(realpath $(dirname $0))/source/low.php $1;
+
+# [1] If empty pin number
+#========================================================#
+if [ -z "$1" ]; then
+
+	echo 127;
+	exit 127;
+fi;
+
+
+
+# [2] Check if valid pin number (integer)
+#========================================================#
+test $1 -ge 0 2> /dev/null;
+
+if [ $? -gt 1 ]; then
+
+	echo 127;
+	exit 127;
+
+fi;
+
+
+
+# [3] Activate (if not already)
+#========================================================#
+test -d /sys/class/gpio/gpio$1 || echo $1 > /sys/class/gpio/export;
+
+
+
+# [4] Set mode to OUT
+#========================================================#
+echo 0 > /sys/class/gpio/gpio$1/value;
+
+
+
+
+# [5] EXIT_CODE
+#========================================================#
+echo 0;
+exit 0;
diff --git a/lib/gpio/out b/lib/gpio/out
index 3dcf259..c4b1948 100755
--- a/lib/gpio/out
+++ b/lib/gpio/out
@@ -1,3 +1,43 @@
 #!/bin/sh
 
-/usr/bin/env php $(realpath $(dirname $0))/source/out.php $1;
+
+# [1] If empty pin number
+#========================================================#
+if [ -z "$1" ]; then
+
+	echo 127;
+	exit 127;
+fi;
+
+
+
+# [2] Check if valid pin number (integer)
+#========================================================#
+test $1 -ge 0 2> /dev/null;
+
+if [ $? -gt 1 ]; then
+
+	echo 127;
+	exit 127;
+
+fi;
+
+
+
+# [3] Activate (if not already)
+#========================================================#
+test -d /sys/class/gpio/gpio$1 || echo $1 > /sys/class/gpio/export;
+
+
+
+# [4] Set mode to OUT
+#========================================================#
+echo "out" > /sys/class/gpio/gpio$1/direction;
+
+
+
+
+# [5] EXIT_CODE
+#========================================================#
+echo 0;
+exit 0;
diff --git a/lib/gpio/source/Pin.php b/lib/gpio/source/Pin.php
deleted file mode 100755
index 7403885..0000000
--- a/lib/gpio/source/Pin.php
+++ /dev/null
@@ -1,90 +0,0 @@
-<?php
-
-	class Pin{
-		
-		const GPIO_DIR = '/sys/class/gpio';
-
-		const GPIO_IN  = 'in';
-		const GPIO_OUT = 'out';
-
-		const GPIO_HIGH = 1;
-		const GPIO_LOW  = 0;
-
-		private $pin;
-		private $mode;
-		private $value;
-
-		public function __construct($pin){
-			if( !preg_match('@^\d+$@', $pin) )
-				throw new Exception("pin must be an integer");
-
-
-			/* (1) Make gpio pin available */
-			if( !file_exists(Pin::GPIO_DIR.'/gpio'.$pin) )
-				file_put_contents(Pin::GPIO_DIR.'/export', $pin);
-
-			/* (2) add attribute */
-			$this->pin = $pin;
-		}
-
-
-		public function __get($attr){
-
-			// if try to fetch value
-			if( $attr == 'value' ){
-
-				return ( file_get_contents(Pin::GPIO_DIR.'/gpio'.$this->pin.'/value') == '1' ) ? Pin::GPIO_HIGH : Pin::GPIO_LOW;
-
-			// if try to fetch mode
-			}else if( $attr == 'mode' ){
-
-				return ( file_get_contents(Pin::GPIO_DIR.'/gpio'.$this->pin.'/value') == 'in' ) ? Pin::GPIO_IN : Pin::GPIO_OUT;
-
-			}
-
-		}
-
-
-		public function __set($attr, $value){
-
-			// if try to set value
-			if( $attr == 'value' ){
-		
-				if( $value == Pin::GPIO_HIGH )
-					file_put_contents(Pin::GPIO_DIR.'/gpio'.$this->pin.'/value', 1);
-				else if( $value == Pin::GPIO_LOW )
-					file_put_contents(Pin::GPIO_DIR.'/gpio'.$this->pin.'/value', 0);
-
-			// if try to set mode
-			}else if( $attr == 'mode' ){
-
-				if( $value == Pin::GPIO_IN )
-					file_put_contents(Pin::GPIO_DIR.'/gpio'.$this->pin.'/direction', 'in');
-				else if( $value == Pin::GPIO_OUT )
-					file_put_contents(Pin::GPIO_DIR.'/gpio'.$this->pin.'/direction', 'out');
-			}
-
-
-		}
-
-
-
-	}
-
-
-	// USAGE
-	//
-	// $red   = new GPIOPin(16);
-	// $green = new GPIOPin(20);
-	// $blue  = new GPIOPin(21);
-
-	// $red->setMode(GPIO_OUT);
-	// $green->setMode(GPIO_OUT);
-	// $blue->setMode(GPIO_OUT);
-
-	// $red->set(GPIO_HIGH)
-	// $green->set(GPIO_LOW)
-	// $blue->set(GPIO_HIGH)
-
-
-?>
diff --git a/lib/gpio/source/high.php b/lib/gpio/source/high.php
deleted file mode 100755
index 45e6fe1..0000000
--- a/lib/gpio/source/high.php
+++ /dev/null
@@ -1,41 +0,0 @@
-#!/usr/bin/php
-
-<?php
-
-	require_once __DIR__.'/../../include/php/const';
-	require_once __DIR__.'/Pin.php';
-
-	function gpio_high($pin){
-
-		/* (1) Create GPIO Pin instance */
-		try{
-
-			$gpio = new Pin($pin);
-
-		}catch(Exception $e){
-
-			return 127;
-
-		}
-
-
-		/* (2) Set mode to in */
-		$gpio->value = Pin::GPIO_HIGH;
-
-		return 0;
-
-	}
-
-
-	/* [1] Check argument
-	=========================================================*/
-	if( $argc < 2 || !preg_match('@^\d+$@', $argv[1]) ){
-		echo 127;
-		die();
-	}
-
-	/* [2] Launch main script
-	=========================================================*/
-	echo gpio_high($argv[1]);
-?>
-
diff --git a/lib/gpio/source/in.php b/lib/gpio/source/in.php
deleted file mode 100755
index 7dca599..0000000
--- a/lib/gpio/source/in.php
+++ /dev/null
@@ -1,41 +0,0 @@
-#!/usr/bin/php
-
-<?php
-
-	require_once __DIR__.'/../../include/php/const';
-	require_once __DIR__.'/Pin.php';
-
-	function gpio_in($pin){
-
-		/* (1) Create GPIO Pin instance */
-		try{
-
-			$gpio = new Pin($pin);
-
-		}catch(Exception $e){
-
-			return 127;
-
-		}
-
-
-		/* (2) Set mode to in */
-		$gpio->mode = Pin::GPIO_IN;
-
-		return 0;
-
-	}
-
-
-	/* [1] Check argument
-	=========================================================*/
-	if( $argc < 2 || !preg_match('@^\d+$@', $argv[1]) ){
-		echo 127;
-		die();
-	}
-
-	/* [2] Launch main script
-	=========================================================*/
-	echo gpio_in($argv[1]);
-?>
-
diff --git a/lib/gpio/source/low.php b/lib/gpio/source/low.php
deleted file mode 100755
index 3ab526d..0000000
--- a/lib/gpio/source/low.php
+++ /dev/null
@@ -1,41 +0,0 @@
-#!/usr/bin/php
-
-<?php
-
-	require_once __DIR__.'/../../include/php/const';
-	require_once __DIR__.'/Pin.php';
-
-	function gpio_low($pin){
-
-		/* (1) Create GPIO Pin instance */
-		try{
-
-			$gpio = new Pin($pin);
-
-		}catch(Exception $e){
-
-			return 127;
-
-		}
-
-
-		/* (2) Set mode to in */
-		$gpio->value = Pin::GPIO_LOW;
-
-		return 0;
-
-	}
-
-
-	/* [1] Check argument
-	=========================================================*/
-	if( $argc < 2 || !preg_match('@^\d+$@', $argv[1]) ){
-		echo 127;
-		die();
-	}
-
-	/* [2] Launch main script
-	=========================================================*/
-	echo gpio_low($argv[1]);
-?>
-
diff --git a/lib/gpio/source/out.php b/lib/gpio/source/out.php
deleted file mode 100755
index 3909207..0000000
--- a/lib/gpio/source/out.php
+++ /dev/null
@@ -1,41 +0,0 @@
-#!/usr/bin/php
-
-<?php
-
-	require_once __DIR__.'/../../include/php/const';
-	require_once __DIR__.'/Pin.php';
-
-	function gpio_out($pin){
-
-		/* (1) Create GPIO Pin instance */
-		try{
-
-			$gpio = new Pin($pin);
-
-		}catch(Exception $e){
-
-			return 127;
-
-		}
-
-
-		/* (2) Set mode to in */
-		$gpio->mode = Pin::GPIO_OUT;
-
-		return 0;
-
-	}
-
-
-	/* [1] Check argument
-	=========================================================*/
-	if( $argc < 2 || !preg_match('@^\d+$@', $argv[1]) ){
-		echo 127;
-		die();
-	}
-
-	/* [2] Launch main script
-	=========================================================*/
-	echo gpio_out($argv[1]);
-?>
-