Porting i2c functionality to PHP scripts

src/php_top/Makefile

 DOCUMENTROOT=/www/pages
+INCLUDES=$(DOCUMENTROOT)/include
 OWN = -o root -g root
 INSTDOCS = 0644
 #INSTALL = install
@@ -16,6 +17,8 @@ PHP_SCRIPTS=camvars.php \
             phpinfo.php \
             snapfull.php
 
+PHPINCLUDES=i2c_include.php show_source_include.php
+            
 
 all:
 	@echo "make all in src"
@@ -25,8 +28,10 @@ all:
 install:
 	@echo "make install in src"
 	$(INSTALL) $(OWN) -d $(DESTDIR)$(DOCUMENTROOT)
+	$(INSTALL) $(OWN) -d $(DESTDIR)$(INCLUDES)
 	$(INSTALL) $(OWN) -m $(INSTDOCS) $(DOCS) $(DESTDIR)$(DOCUMENTROOT)
 	$(INSTALL) $(OWN) -m $(INSTDOCS) $(PHP_SCRIPTS) $(DESTDIR)$(DOCUMENTROOT)
+	$(INSTALL) $(OWN) -m $(INSTDOCS) $(PHPINCLUDES) $(DESTDIR)$(INCLUDES)
 	$(INSTALL) $(OWN) -d $(DESTDIR)$(SYSCONFDIR)
 	$(INSTALL) $(OWN) -d $(DESTDIR)$(CONFDIR)
 	$(INSTALL) $(OWN) -m $(INSTDOCS) -T autocampars.xml $(DESTDIR)$(CONFDIR)/autocampars0.xml

src/php_top/show_source_include.php

+<?php
+/*!***************************************************************************
+*! FILE NAME  : show_source.inc
+*! DESCRIPTION: Outputs program source code if url has 'source' parameter.
+*! Copyright (C) 2012 Elphel, Inc
+*! -----------------------------------------------------------------------------**
+*!
+*!  This program is free software: you can redistribute it and/or modify
+*!  it under the terms of the GNU General Public License as published by
+*!  the Free Software Foundation, either version 3 of the License, or
+*!  (at your option) any later version.
+*!
+*!  This program is distributed in the hope that it will be useful,
+*!  but WITHOUT ANY WARRANTY; without even the implied warranty of
+*!  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*!  GNU General Public License for more details.
+*!
+*!  You should have received a copy of the GNU General Public License
+*!  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+    if (array_key_exists('source',$_GET)) {
+      $source=file_get_contents ($_SERVER['SCRIPT_FILENAME']);
+      header("Content-Type: text/php");
+      header("Content-Length: ".strlen($source)."\n");
+      header("Pragma: no-cache\n");
+      echo $source;
+      exit(0);
+    }
+
+    if (array_key_exists('help',$_GET)) {
+	if (function_exists('_help')) {
+	    _help();
+	    exit(0);
+	}
+    }
+
+    if (count($_GET)==0) {
+	if (function_exists('_usage')) {
+	    _usage();
+	    exit(0);
+	}
+    }
+
+
+?>
\ No newline at end of file