SATS/lib/global-state/source/update.php

#!/usr/bin/php

<?php

	require_once __DIR__.'/../../include/php/const';


	function globalstate_update(){


		/* [1] Fetch global state
		=========================================================*/
		/* (1) Fetch from file */
		$f_gstate = @file_get_contents(STATE_CONF);

		/* (2) Manage errors */
		if( $f_gstate === false )
			return 127;

		/* (3) Remove surrounding spaces */
		$f_gstate = preg_replace('@^\s+@', '', $f_gstate);
		$f_gstate = preg_replace('@\s+$@', '', $f_gstate);

		/* (4) Extract in array */
		$gstate = explode('', $f_gstate);



		/* [2] Cache chips
		=========================================================*/
		/* (1) Get file handler */
		$f_chips = new SplFileObject(CHIPS_CONF, 'r');

		/* (2) Parse line by line */
		while( !$f_chips->eof() ){

			// {1} Try to parse current line //
			$parsed = json_decode($f_chips->fgets(), true);

			// {2} If cannot parse, go to next //
			if( is_null($parsed) )
				continue;

			// {3} Check if position available in GSTATE //
			if( isset($gstate[$parsed[0]]) ){

				/* (1) If according state does not exist -> go to next chip */
				if( !isset($parsed[2][$gstate[$parsed[0]]]) )
					break;

				/* (2) Use more human-readable data */
				$position = $parsed[0];
				$state    = $gstate[$parsed[0]];

				/* (3) Set state */
				$updated = syscall(SOURCE_DIR."/lib/global-state/set {$position} {$state}");

				/* (4) If error */
				if( $updated === false )
					slog("Cannot set ${position} chip to state {$state}", 'global-state:update');

			}
		}
		return 0;

	}


	/* [3] Launch main script
	=========================================================*/
	$exec = globalstate_update();

	echo $exec;
	die($exec);
?>