Added utilities.php

utilities.php

@@ -0,0 +1,146 @@
+<?php
+
+  /*
+   * Utilities
+   * (c) 2010 Mauro Parra <mauropm@gmail.com>
+   */
+
+  /* 
+   * Database Configuration
+   */ 
+
+require_once('config.php');
+
+/*
+ * Db utilities
+ */ 
+
+function my_connect($host=DB_HOST,$user=DB_USER,$pass=DB_PASS){
+  $mysql = mysql_connect($host, $user, $pass);
+  if (!$mysql) {
+    printerr("No se puede conectar al servidor mysql",ERR);
+  } else {
+    return $mysql; 
+  }
+}
+
+function my_use($dbname=DB_NAME,$link){
+  $output = mysql_select_db($dbname,$link); 
+  if(!$output){
+    printerr("No se puede seleccionar la base de datos. Error #: ". mysql_errno($link) ." con mensaje ". mysql_error($link),
+	     ERR);
+  }
+}
+
+function my_check_result($result, $query,$link){
+  if ( !$result ){
+    $message ="Query invalida: ". mysql_error() ."\n";
+    $message .="La query original es: ". $query;
+    printerr($message,ERR);
+  }
+}
+
+function check_user($username,$mysql){
+  $query = sprintf("SELECT username FROM admins WHERE username='%s'",
+		   mysql_real_escape_string($username));
+  $result = mysql_query($query,$mysql);
+  my_check_result($result,$query,$mysql);
+  return mysql_num_rows($result); //regresa cero si el usuario no existe. 
+}
+
+
+function check_password($username,$password,$mysql){
+  $query = sprintf("SELECT username,password FROM admins WHERE username='%s' AND password='%s'",
+		   mysql_real_escape_string($username),
+		   mysql_real_escape_string($password));
+  $result = mysql_query($query,$mysql);
+  my_check_result($result,$query,$mysql);
+  return mysql_num_rows($result); //regresa cero si el password es incorrecto
+}
+
+
+
+/* 
+ * Formating utilities
+ */ 
+
+function println($text){
+  print $text . "\n";
+}
+
+function printerr($text,$level){
+  if($level==ERR){
+    die($text);
+  } else {
+  println($text);
+  }
+}
+
+/* 
+ * form utilities.
+ */ 
+
+/* print a text box */
+function input_text($element_name, $values) {
+  print '<input type="text" name="' . $element_name .'" value="';
+  print htmlentities($values[$element_name]) . '">';
+}
+
+/* print a password box */ 
+function input_password($element_name, $values){ 
+  print '<input type="password" name="' . $element_name .'" value="';
+  print htmlentities($values[$element_name]) . '">';
+
+}
+
+//print a submit button
+function input_submit($element_name, $label) {
+  print '<input type="submit" name="' . $element_name .'" value="';
+  print htmlentities($label) .'"/>';
+}
+
+//print a textarea
+function input_textarea($element_name, $values) {
+  print '<textarea name="' . $element_name .'">';
+  print htmlentities($values[$element_name]) . '</textarea>';
+}
+
+//print a radio button or checkbox
+function input_radiocheck($type, $element_name, $values, $element_value) {
+  print '<input type="' . $type . '" name="' . $element_name .'" value="' . $element_value . '" ';
+  if ($element_value == $values[$element_name]) {
+        print ' checked="checked"';
+  }
+    print '/>';
+}
+
+//print a <select> menu
+function input_select($element_name, $selected, $options, $multiple = false) {
+    // print out the <select> tag
+    print '<select name="' . $element_name;
+    // if multiple choices are permitted, add the multiple attribute
+    // and add a [] to the end of the tag name
+    if ($multiple) { print '[]" multiple="multiple'; }
+    print '">';
+
+    // set up the list of things to be selected
+    $selected_options = array();
+    if ($multiple) {
+        foreach ($selected[$element_name] as $val) {
+            $selected_options[$val] = true;
+        }
+    } else {
+        $selected_options[ $selected[$element_name] ] = true;
+    }
+
+    // print out the <option> tags
+    foreach ($options as $option => $label) {
+        print '<option value="' . htmlentities($option) . '"';
+        if ($selected_options[$option]) {
+            print ' selected="selected"';
+        }
+        print '>' . htmlentities($label) . '</option>';
+    }
+    print '</select>';
+}
+?>