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Add read only option #31

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Add read only option #31

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15 changes: 9 additions & 6 deletions src/fpdm.php
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Original file line number Diff line number Diff line change
Expand Up @@ -471,7 +471,7 @@ function Allow($permissions=null) {
*@internal flatten mode is not yet supported
*@param Boolean flatten Optional, false by default, if true will use pdftk (requires a shell) to flatten the pdf form
**/
function Merge($flatten=false) {
function Merge($flatten=false,$read_only=false) {
//------------------------------

if($flatten) $this->Flatten();
Expand Down Expand Up @@ -504,7 +504,7 @@ function Merge($flatten=false) {
//==== Alterate work is made here: change values ============
if($count_fields) {
foreach($fields as $name => $value) {
$this->set_field_value("current",$name,$value);
$this->set_field_value("current",$name,$value,$read_only);
// $value=''; //Strategy applies only to current value, clear others
// $this->set_field_value("default",$name,$value);
// $this->set_field_value("tooltip",$name,$value);
Expand Down Expand Up @@ -823,7 +823,7 @@ function _encode_value($str) {
return $this->_bin2hex($str);
}

function _set_field_value2($line,$value,$append) {
function _set_field_value2($line,$value,$append,$read_only) {
$CurLine=$this->pdf_entries[$line];
$OldLen=strlen($CurLine);

Expand All @@ -843,6 +843,9 @@ function _set_field_value2($line,$value,$append) {
else
$this->Error('/V not found');
}
if ($read_only) {
$CurLine .= ' /Ff 1';
}

$NewLen=strlen($CurLine);
$Shift=$NewLen-$OldLen;
Expand All @@ -859,7 +862,7 @@ function _set_field_value2($line,$value,$append) {
*@param string $name name of the field annotation to change the value
*@param string $value the new value to set
**/
function set_field_value($type,$name,$value) {
function set_field_value($type,$name,$value,$read_only=false) {
//------------------------------------
$verbose_set=($this->verbose&&($this->verbose_level>1));

Expand All @@ -886,9 +889,9 @@ function set_field_value($type,$name,$value) {
if($verbose_set) echo "<br>Change $type value of the field $name at line $field_value_line to '<i>$value</i>'";
$offset_shift=$this->_set_field_value($field_value_line,$value);*/
if(isset($this->value_entries[$name]["values"]["current"]))
$offset_shift=$this->_set_field_value2($this->value_entries[$name]["values"]["current"],$value,false);
$offset_shift=$this->_set_field_value2($this->value_entries[$name]["values"]["current"],$value,false,$read_only);
else
$offset_shift=$this->_set_field_value2($this->value_entries[$name]["infos"]["name_line"],$value,true);
$offset_shift=$this->_set_field_value2($this->value_entries[$name]["infos"]["name_line"],$value,true,$read_only);
}
// }else
// $this->Error("set_field_value failed as invalid valuetype $type for object $object_id");
Expand Down