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<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
* CodeIgniter
*
* An open source application development framework for PHP 5.2.4 or newer
*
* NOTICE OF LICENSE
*
* Licensed under the Open Software License version 3.0
*
* This source file is subject to the Open Software License (OSL 3.0) that is
* bundled with this package in the files license.txt / license.rst. It is
* also available through the world wide web at this URL:
* http://opensource.org/licenses/OSL-3.0
* If you did not receive a copy of the license and are unable to obtain it
* through the world wide web, please send an email to
* licensing@ellislab.com so we can send you a copy immediately.
*
* @package CodeIgniter
* @author EllisLab Dev Team
* @copyright Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
* @license http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
* @link http://codeigniter.com
* @since Version 1.0
*/

/**
* CodeIgniter Form Helpers
*
* @package CodeIgniter
* @subpackage Helpers
* @category Helpers
* @author EllisLab Dev Team
* @link http://codeigniter.com/user_guide/helpers/form_helper.html
*/

// ------------------------------------------------------------------------

if ( ! function_exists('form_open'))
{
/**
* Form Declaration
*
* Creates the opening portion of the form.
*
* @param string the URI segments of the form destination
* @param array a key/value pair of attributes
* @param array a key/value pair hidden data
* @return string
*/
function form_open($action = '', $attributes = '', $hidden = array())
{
$CI =& get_instance();

if ($attributes === '')
{
$attributes = 'method="post"';
}

// If an action is not a full URL then turn it into one
if ($action && strpos($action, '://') === FALSE)
{
$action = $CI->config->site_url($action);
}
elseif ( ! $action)
{
// If no action is provided then set to the current url
$action = $CI->config->site_url($CI->uri->uri_string());
}

$form = '<form action="'.$action.'"'._attributes_to_string($attributes, TRUE).">\n";

// Add CSRF field if enabled, but leave it out for GET requests and requests to external websites
if ($CI->config->item('csrf_protection') === TRUE && ! (strpos($action, $CI->config->base_url()) === FALSE OR strpos($form, 'method="get"')))
{
$hidden[$CI->security->get_csrf_token_name()] = $CI->security->get_csrf_hash();
}

if (is_array($hidden) && count($hidden) > 0)
{
$form .= '<div style="display:none;">'.form_hidden($hidden).'</div>';
}

return $form;
}
}

// ------------------------------------------------------------------------

if ( ! function_exists('form_open_multipart'))
{
/**
* Form Declaration - Multipart type
*
* Creates the opening portion of the form, but with "multipart/form-data".
*
* @param string the URI segments of the form destination
* @param array a key/value pair of attributes
* @param array a key/value pair hidden data
* @return string
*/
function form_open_multipart($action = '', $attributes = array(), $hidden = array())
{
if (is_string($attributes))
{
$attributes .= ' enctype="multipart/form-data"';
}
else
{
$attributes['enctype'] = 'multipart/form-data';
}

return form_open($action, $attributes, $hidden);
}
}

// ------------------------------------------------------------------------

if ( ! function_exists('form_hidden'))
{
/**
* Hidden Input Field
*
* Generates hidden fields. You can pass a simple key/value string or
* an associative array with multiple values.
*
* @param mixed
* @param string
* @param bool
* @return string
*/
function form_hidden($name, $value = '', $extra = '', $recursing = FALSE)
{
static $form;

if (is_array($extra))
{
$extra_string = '';
foreach ($extra as $key => $val)
{
$extra_string .= ' '.$key.'="'.$val.'"';
}
                        $extra = $extra_string;
}
elseif($extra != '')
$extra = ' '.$extra;

if ($recursing === FALSE)
{
$form = "\n";
}

if (is_array($name))
{
foreach ($name as $key => $val)
{
form_hidden($key, $val, $extra, TRUE);
}
return $form;
}

if ( ! is_array($value))
{
$form .= '<input type="hidden" name="'.$name.'" value="'.form_prep($value, $name).'"'.$extra." />\n";
}
else
{
foreach ($value as $k => $v)
{
$k = is_int($k) ? '' : $k;
form_hidden($name.'['.$k.']', $v, $extra, TRUE);
}
}

return $form;
}
}

// ------------------------------------------------------------------------

if ( ! function_exists('form_input'))
{
/**
* Text Input Field
*
* @param mixed
* @param string
* @param string
* @return string
*/
function form_input($data = '', $value = '', $extra = '')
{
$defaults = array('type' => 'text', 'name' => ( ! is_array($data) ? $data : ''), 'value' => $value);

return '<input '._parse_form_attributes($data, $defaults).$extra." />\n";
}
}

// ------------------------------------------------------------------------

if ( ! function_exists('form_password'))
{
/**
* Password Field
*
* Identical to the input function but adds the "password" type
*
* @param mixed
* @param string
* @param string
* @return string
*/
function form_password($data = '', $value = '', $extra = '')
{
if ( ! is_array($data))
{
$data = array('name' => $data);
}

$data['type'] = 'password';
return form_input($data, $value, $extra);
}
}

// ------------------------------------------------------------------------

if ( ! function_exists('form_upload'))
{
/**
* Upload Field
*
* Identical to the input function but adds the "file" type
*
* @param mixed
* @param string
* @param string
* @return string
*/
function form_upload($data = '', $value = '', $extra = '')
{
if ( ! is_array($data))
{
$data = array('name' => $data);
}

$data['type'] = 'file';
return form_input($data, $value, $extra);
}
}

// ------------------------------------------------------------------------

if ( ! function_exists('form_textarea'))
{
/**
* Textarea field
*
* @param mixed
* @param string
* @param string
* @return string
*/
function form_textarea($data = '', $value = '', $extra = '')
{
$defaults = array('name' => ( ! is_array($data) ? $data : ''), 'cols' => '40', 'rows' => '10');

if ( ! is_array($data) OR ! isset($data['value']))
{
$val = $value;
}
else
{
$val = $data['value'];
unset($data['value']); // textareas don't use the value attribute
}

$name = is_array($data) ? $data['name'] : $data;
return '<textarea '._parse_form_attributes($data, $defaults).$extra.'>'.form_prep($val, $name)."</textarea>\n";
}
}

// ------------------------------------------------------------------------

if ( ! function_exists('form_multiselect'))
{
/**
* Multi-select menu
*
* @param string
* @param array
* @param mixed
* @param string
* @return string
*/
function form_multiselect($name = '', $options = array(), $selected = array(), $extra = '')
{
if ( ! strpos($extra, 'multiple'))
{
$extra .= ' multiple="multiple"';
}

return form_dropdown($name, $options, $selected, $extra);
}
}

// --------------------------------------------------------------------

if ( ! function_exists('form_dropdown'))
{
/**
* Drop-down Menu
*
* @param string
* @param array
* @param string
* @param string
* @return string
*/
function form_dropdown($name = '', $options = array(), $selected = array(), $extra = '')
{
// If name is really an array then we'll call the function again using the array
if (is_array($name) && isset($name['name']))
{
isset($name['options']) OR $name['options'] = array();
isset($name['selected']) OR $name['selected'] = array();
isset($name['extra']) OR $name['extra'] = array();

return form_dropdown($name['name'], $name['options'], $name['selected'], $name['extra']);
}

if ( ! is_array($selected))
{
$selected = array($selected);
}

// If no selected state was submitted we will attempt to set it automatically
if (count($selected) === 0 && isset($_POST[$name]))
{
$selected = array($_POST[$name]);
}

if ($extra != '')
{
$extra = ' '.$extra;
}

$multiple = (count($selected) > 1 && strpos($extra, 'multiple') === FALSE) ? ' multiple="multiple"' : '';

$form = '<select name="'.$name.'"'.$extra.$multiple.">\n";

foreach ($options as $key => $val)
{
$key = (string) $key;

if (is_array($val))
{
if (empty($val))
{
continue;
}

$form .= '<optgroup label="'.$key."\">\n";

foreach ($val as $optgroup_key => $optgroup_val)
{
$sel = in_array($optgroup_key, $selected) ? ' selected="selected"' : '';
$form .= '<option value="'.$optgroup_key.'"'.$sel.'>'.(string) $optgroup_val."</option>\n";
}

$form .= "</optgroup>\n";
}
else
{
$form .= '<option value="'.$key.'"'.(in_array($key, $selected) ? ' selected="selected"' : '').'>'.(string) $val."</option>\n";
}
}

return $form."</select>\n";
}
}

// ------------------------------------------------------------------------

if ( ! function_exists('form_checkbox'))
{
/**
* Checkbox Field
*
* @param mixed
* @param string
* @param bool
* @param string
* @return string
*/
function form_checkbox($data = '', $value = '', $checked = FALSE, $extra = '')
{
$defaults = array('type' => 'checkbox', 'name' => ( ! is_array($data) ? $data : ''), 'value' => $value);

if (is_array($data) && array_key_exists('checked', $data))
{
$checked = $data['checked'];

if ($checked == FALSE)
{
unset($data['checked']);
}
else
{
$data['checked'] = 'checked';
}
}

if ($checked == TRUE)
{
$defaults['checked'] = 'checked';
}
else
{
unset($defaults['checked']);
}

return '<input '._parse_form_attributes($data, $defaults).$extra." />\n";
}
}

// ------------------------------------------------------------------------

if ( ! function_exists('form_radio'))
{
/**
* Radio Button
*
* @param mixed
* @param string
* @param bool
* @param string
* @return string
*/
function form_radio($data = '', $value = '', $checked = FALSE, $extra = '')
{
if ( ! is_array($data))
{
$data = array('name' => $data);
}

$data['type'] = 'radio';
return form_checkbox($data, $value, $checked, $extra);
}
}

// ------------------------------------------------------------------------

if ( ! function_exists('form_submit'))
{
/**
* Submit Button
*
* @param mixed
* @param string
* @param string
* @return string
*/
function form_submit($data = '', $value = '', $extra = '')
{
$defaults = array('type' => 'submit', 'name' => ( ! is_array($data) ? $data : ''), 'value' => $value);
return '<input '._parse_form_attributes($data, $defaults).$extra." />\n";
}
}

// ------------------------------------------------------------------------

if ( ! function_exists('form_reset'))
{
/**
* Reset Button
*
* @param mixed
* @param string
* @param string
* @return string
*/
function form_reset($data = '', $value = '', $extra = '')
{
$defaults = array('type' => 'reset', 'name' => ( ! is_array($data) ? $data : ''), 'value' => $value);
return '<input '._parse_form_attributes($data, $defaults).$extra." />\n";
}
}

// ------------------------------------------------------------------------

if ( ! function_exists('form_button'))
{
/**
* Form Button
*
* @param mixed
* @param string
* @param string
* @return string
*/
function form_button($data = '', $content = '', $extra = '')
{
$defaults = array('name' => ( ! is_array($data) ? $data : ''), 'type' => 'button');
if (is_array($data) && isset($data['content']))
{
$content = $data['content'];
unset($data['content']); // content is not an attribute
}

return '<button '._parse_form_attributes($data, $defaults).$extra.'>'.$content."</button>\n";
}
}

// ------------------------------------------------------------------------

if ( ! function_exists('form_label'))
{
/**
* Form Label Tag
*
* @param string The text to appear onscreen
* @param string The id the label applies to
* @param string Additional attributes
* @return string
*/
function form_label($label_text = '', $id = '', $attributes = array())
{

$label = '<label';

if ($id !== '')
{
$label .= ' for="'.$id.'"';
}

if (is_array($attributes) && count($attributes) > 0)
{
foreach ($attributes as $key => $val)
{
$label .= ' '.$key.'="'.$val.'"';
}
}

return $label.'>'.$label_text.'</label>';
}
}

// ------------------------------------------------------------------------

if ( ! function_exists('form_fieldset'))
{
/**
* Fieldset Tag
*
* Used to produce <fieldset><legend>text</legend>. To close fieldset
* use form_fieldset_close()
*
* @param string The legend text
* @param string Additional attributes
* @return string
*/
function form_fieldset($legend_text = '', $attributes = array())
{
$fieldset = '<fieldset'._attributes_to_string($attributes, FALSE).">\n";
if ($legend_text !== '')
{
return $fieldset.'<legend>'.$legend_text."</legend>\n";
}

return $fieldset;
}
}

// ------------------------------------------------------------------------

if ( ! function_exists('form_fieldset_close'))
{
/**
* Fieldset Close Tag
*
* @param string
* @return string
*/
function form_fieldset_close($extra = '')
{
return '</fieldset>'.$extra;
}
}

// ------------------------------------------------------------------------

if ( ! function_exists('form_close'))
{
/**
* Form Close Tag
*
* @param string
* @return string
*/
function form_close($extra = '')
{
return '</form>'.$extra;
}
}

// ------------------------------------------------------------------------

if ( ! function_exists('form_prep'))
{
/**
* Form Prep
*
* Formats text so that it can be safely placed in a form field in the event it has HTML tags.
*
* @param string
* @param string
* @return string
*/
function form_prep($str = '', $field_name = '')
{
static $prepped_fields = array();

// if the field name is an array we do this recursively
if (is_array($str))
{
foreach ($str as $key => $val)
{
$str[$key] = form_prep($val);
}

return $str;
}

if ($str === '')
{
return '';
}

// we've already prepped a field with this name
// @todo need to figure out a way to namespace this so
// that we know the *exact* field and not just one with
// the same name
if (isset($prepped_fields[$field_name]))
{
return $str;
}

if ($field_name !== '')
{
$prepped_fields[$field_name] = $field_name;
}

return html_escape($str);
}
}

// ------------------------------------------------------------------------

if ( ! function_exists('set_value'))
{
/**
* Form Value
*
* Grabs a value from the POST array for the specified field so you can
* re-populate an input field or textarea. If Form Validation
* is active it retrieves the info from the validation class
*
* @param string
* @param string
* @return mixed
*/
function set_value($field = '', $default = '')
{
if (FALSE === ($OBJ =& _get_validation_object()))
{
if ( ! isset($_POST[$field]))
{
return $default;
}

return form_prep($_POST[$field], $field);
}

return form_prep($OBJ->set_value($field, $default), $field);
}
}

// ------------------------------------------------------------------------

if ( ! function_exists('set_select'))
{
/**
* Set Select
*
* Let's you set the selected value of a <select> menu via data in the POST array.
* If Form Validation is active it retrieves the info from the validation class
*
* @param string
* @param string
* @param bool
* @return string
*/
function set_select($field = '', $value = '', $default = FALSE)
{
$OBJ =& _get_validation_object();

if ($OBJ === FALSE)
{
if ( ! isset($_POST[$field]))
{
if (count($_POST) === 0 && $default === TRUE)
{
return ' selected="selected"';
}
return '';
}

$field = $_POST[$field];

if (is_array($field))
{
if ( ! in_array($value, $field))
{
return '';
}
}
elseif (($field == '' OR $value == '') OR $field !== $value)
{
return '';
}

return ' selected="selected"';
}

return $OBJ->set_select($field, $value, $default);
}
}

// ------------------------------------------------------------------------

if ( ! function_exists('set_checkbox'))
{
/**
* Set Checkbox
*
* Let's you set the selected value of a checkbox via the value in the POST array.
* If Form Validation is active it retrieves the info from the validation class
*
* @param string
* @param string
* @param bool
* @return string
*/
function set_checkbox($field = '', $value = '', $default = FALSE)
{
$OBJ =& _get_validation_object();

if ($OBJ === FALSE)
{
if ( ! isset($_POST[$field]))
{
if (count($_POST) === 0 && $default === TRUE)
{
return ' checked="checked"';
}
return '';
}

$field = $_POST[$field];

if (is_array($field))
{
if ( ! in_array($value, $field))
{
return '';
}
}
elseif (($field == '' OR $value == '') OR $field !== $value)
{
return '';
}

return ' checked="checked"';
}

return $OBJ->set_checkbox($field, $value, $default);
}
}

// ------------------------------------------------------------------------

if ( ! function_exists('set_radio'))
{
/**
* Set Radio
*
* Let's you set the selected value of a radio field via info in the POST array.
* If Form Validation is active it retrieves the info from the validation class
*
* @param string
* @param string
* @param bool
* @return string
*/
function set_radio($field = '', $value = '', $default = FALSE)
{
$OBJ =& _get_validation_object();

if ($OBJ === FALSE)
{
if ( ! isset($_POST[$field]))
{
if (count($_POST) === 0 && $default === TRUE)
{
return ' checked="checked"';
}
return '';
}

$field = $_POST[$field];

if (is_array($field))
{
if ( ! in_array($value, $field))
{
return '';
}
}
else
{
if (($field == '' OR $value == '') OR $field !== $value)
{
return '';
}
}

return ' checked="checked"';
}

return $OBJ->set_radio($field, $value, $default);
}
}

// ------------------------------------------------------------------------


if ( ! function_exists('form_error'))
{
/**
* Form Error
*
* Returns the error for a specific form field. This is a helper for the
* form validation class.
*
* @param string
* @param string
* @param string
* @return string
*/
function form_error($field = '', $prefix = '', $suffix = '')
{
if (FALSE === ($OBJ =& _get_validation_object()))
{
return '';
}

return $OBJ->error($field, $prefix, $suffix);
}
}

// ------------------------------------------------------------------------

if ( ! function_exists('validation_errors'))
{
/**
* Validation Error String
*
* Returns all the errors associated with a form submission. This is a helper
* function for the form validation class.
*
* @param string
* @param string
* @return string
*/
function validation_errors($prefix = '', $suffix = '')
{
if (FALSE === ($OBJ =& _get_validation_object()))
{
return '';
}

return $OBJ->error_string($prefix, $suffix);
}
}

// ------------------------------------------------------------------------

if ( ! function_exists('_parse_form_attributes'))
{
/**
* Parse the form attributes
*
* Helper function used by some of the form helpers
*
* @param array
* @param array
* @return string
*/
function _parse_form_attributes($attributes, $default)
{
if (is_array($attributes))
{
foreach ($default as $key => $val)
{
if (isset($attributes[$key]))
{
$default[$key] = $attributes[$key];
unset($attributes[$key]);
}
}

if (count($attributes) > 0)
{
$default = array_merge($default, $attributes);
}
}

$att = '';

foreach ($default as $key => $val)
{
if ($key === 'value')
{
$val = form_prep($val, $default['name']);
}

$att .= $key.'="'.$val.'" ';
}

return $att;
}
}

// ------------------------------------------------------------------------

if ( ! function_exists('_attributes_to_string'))
{
/**
* Attributes To String
*
* Helper function used by some of the form helpers
*
* @param mixed
* @param bool
* @return string
*/
function _attributes_to_string($attributes, $formtag = FALSE)
{
if (is_string($attributes) && strlen($attributes) > 0)
{
if ($formtag === TRUE && strpos($attributes, 'method=') === FALSE)
{
$attributes .= ' method="post"';
}

if ($formtag === TRUE && strpos($attributes, 'accept-charset=') === FALSE)
{
$attributes .= ' accept-charset="'.strtolower(config_item('charset')).'"';
}

return ' '.$attributes;
}

if (is_object($attributes) && count($attributes) > 0)
{
$attributes = (array) $attributes;
}

if (is_array($attributes) && ($formtag === TRUE OR count($attributes) > 0))
{
$atts = '';

if ( ! isset($attributes['method']) && $formtag === TRUE)
{
$atts .= ' method="post"';
}

if ( ! isset($attributes['accept-charset']) && $formtag === TRUE)
{
$atts .= ' accept-charset="'.strtolower(config_item('charset')).'"';
}

foreach ($attributes as $key => $val)
{
$atts .= ' '.$key.'="'.$val.'"';
}

return $atts;
}
}
}

// ------------------------------------------------------------------------

if ( ! function_exists('_get_validation_object'))
{
/**
* Validation Object
*
* Determines what the form validation class was instantiated as, fetches
* the object and returns it.
*
* @return mixed
*/
function &_get_validation_object()
{
$CI =& get_instance();

// We set this as a variable since we're returning by reference.
$return = FALSE;

if (FALSE !== ($object = $CI->load->is_loaded('form_validation')))
{
if ( ! isset($CI->$object) OR ! is_object($CI->$object))
{
return $return;
}

return $CI->$object;
}

return $return;
}
}

/* End of file form_helper.php */
/* Location: ./system/helpers/form_helper.php */
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