-
Notifications
You must be signed in to change notification settings - Fork 0
/
pdfconverter.module
248 lines (238 loc) · 10.4 KB
/
pdfconverter.module
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
<?php
require_once("pdfconverter.services.inc");
/**
* Implements hook_permission
*/
function pdfconverter_permission(){
return array();
}
/**
* Implements hook_menu();
*/
function pdfconverter_menu(){
$items['manual-convert'] = array(
'title' => 'Convert PDF to Images',
'page callback' => 'drupal_get_form',
'page arguments' => array('_pdfconverter_convert_form'),
'access arguments' => array('access content'),
'type' => MENU_CALLBACK,
);
return $items;
}
/**
* Implements hook_form_alter()
*/
function pdfconverter_form_alter(&$form, &$form_state, $form_id){
if($form_id == 'field_ui_field_edit_form'){
if($form['#field']['type'] == 'file'){
$pdfconverter_enabled = variable_get('pdfconverter_'.$form['#instance']['field_name'].'_'.$form['#instance']['entity_type'].'_'.$form['#instance']['bundle'], 0);
$form['instance']['settings']['pdfconverter'] = array(
'#type' => 'checkbox',
'#title' => 'Enable PDF to image conversion',
'#weight' => -3,
'#default_value' => $pdfconverter_enabled
);
$form['instance']['settings']['pdfconverter_fieldable'] = array(
'#type' => 'checkbox',
'#title' => 'Store images within an existing image field',
'#weight' => -2,
'#default_value' => variable_get('pdfconverter_fieldable_'.$form['#instance']['field_name'].'_'.$form['#instance']['entity_type'].'_'.$form['#instance']['bundle'], 1)
);
$field_options = array('' => ' - Select a Field - ');
$fields_info = field_info_fields();
foreach($fields_info as $field_name => $field_info){
$entity_type = $form['#instance']['entity_type'];
if(isset($field_info['bundles'][$entity_type]) && is_array($field_info['bundles'][$entity_type]) && in_array($form['#instance']['bundle'], $field_info['bundles'][$entity_type])){
if($field_info['type'] == 'image'){
$instance_info = field_info_instance($entity_type, $field_name, $form['#instance']['bundle']);
//dpm($instance_info);
$field_options[$field_name] = $instance_info['label'];
}
}
}
$form['instance']['settings']['pdfconverter_image_field'] = array(
'#type' => 'select',
'#title' => 'Select the field where to store the images',
'#weight' => -1,
'#options' => $field_options,
'#default_value' => variable_get('pdfconverter_img_field_'.$form['#instance']['field_name'].'_'.$form['#instance']['entity_type'].'_'.$form['#instance']['bundle'], '')
);
/*if($pdfconverter_enabled){
$form['instance']['settings']['file_extensions']['#attributes']['disabled'] = array('disabled');
}*/
array_unshift($form['#submit'], '_pdfconverter_file_field_form_submit');
}
}
}
/**
* Submit handler to set the pdf to image conversion options
*/
function _pdfconverter_file_field_form_submit($form, &$form_state){
variable_set('pdfconverter_'.$form['#instance']['field_name'].'_'.$form['#instance']['entity_type'].'_'.$form['#instance']['bundle'], $form_state['values']['instance']['settings']['pdfconverter']);
if($form_state['values']['instance']['settings']['pdfconverter']){
$form_state['values']['instance']['settings']['file_extensions'] = 'pdf';
variable_set('pdfconverter_fieldable_'.$form['#instance']['field_name'].'_'.$form['#instance']['entity_type'].'_'.$form['#instance']['bundle'], $form_state['values']['instance']['settings']['pdfconverter_fieldable']);
variable_set('pdfconverter_img_field_'.$form['#instance']['field_name'].'_'.$form['#instance']['entity_type'].'_'.$form['#instance']['bundle'], $form_state['values']['instance']['settings']['pdfconverter_image_field']);
}
}
/**
* Implements hook_entity_insert
*/
function pdfconverter_entity_insert($entity, $type){
_pdfconverter_entity_upsert($entity, $type);
}
/**
* Implements hook_entity_update
*/
function pdfconverter_entity_update($entity, $type){
_pdfconverter_entity_upsert($entity, $type);
}
function _pdfconverter_entity_upsert($entity, $type){
global $user;
$fields_info = field_info_fields();
foreach($fields_info as $field_name => $field_info){
if(isset($field_info['bundles'][$type]) && is_array($field_info['bundles'][$type]) && in_array($entity->type, $field_info['bundles'][$type])){
$pdfconverter_enabled = variable_get('pdfconverter_'.$field_name.'_'.$type.'_'.$entity->type, 0);
if($pdfconverter_enabled){
foreach($entity->$field_name as $lang => $fields){
foreach($fields as $id => $field){
//load the file entity
$original_field = $entity->original->$field_name;
if(isset($field['fid']) && $field['fid'] != $original_field[$lang][$id]['fid']){
$pdf_file = file_load($field['fid']);
if($pdf_file){
//check if files has been processed for the file
$processed = variable_get('pdfconverter_processed_'.$field_name.'_'.$type.'_'.$entity->type, FALSE);
if(!$processed){
$files_sources = convert_file_to_images($pdf_file);
//dpm($files_sources);
$is_fieldable = variable_get('pdfconverter_fieldable_'.$field_name.'_'.$type.'_'.$entity->type, 0);
if($is_fieldable){
$target_field = variable_get('pdfconverter_img_field_'.$field_name.'_'.$type.'_'.$entity->type, '');
//dpm($entity);
//return;
$entity->$target_field[LANGUAGE_NONE] = array();
$i = 0;
foreach($files_sources as $source){
$file = new stdClass();
$file->uid = $user->uid;
$file->status = FILE_STATUS_PERMANENT;
$file->filename = trim(basename($source), '.');
$file->uri = 'temporary://'.$file->filename;
$file->filemime = file_get_mimetype($file->filename);
//to solve Integrity Constraint Violation issue if there is for any case another entry with the same filename
db_delete('file_managed')->condition('filename', $file->filename)->execute();
file_save($file);
//TODO: get the URI given by the field settings
file_move($file, 'public://catalogos_pdf/images/'.$file->filename, FILE_EXISTS_RENAME);
$file->alt = '';
$file->title = '';
//dpm($entity->$target_field[LANGUAGE_NONE][]);
//dpm($file);
//return;
$entity->{$target_field}[LANGUAGE_NONE][$i] = (array) $file;
field_attach_presave($type, $entity);
field_attach_update($type, $entity);
//dpm($file);
$i++;
}
}
//variable_set('pdfconverter_processed_'.$field_name.'_'.$type.'_'.$entity->type, TRUE);
}
}
}
}
}
}
}
}
//dpm($entity);
//dpm($type);
}
/**
* The core function that converts an image file into a pdf
* @param file object to be converted
*/
function convert_file_to_images($pdf_file, $options = array()){
$options += array(
'type' => 'jpg',
'quality' => 90,
'density' => 72
);
$base_path = $_SERVER['DOCUMENT_ROOT'] . base_path();
$wrapper = file_stream_wrapper_get_instance_by_uri($pdf_file->uri);
$path = $wrapper->realpath();
$image_wrapper = file_stream_wrapper_get_instance_by_uri('temporary://'.str_replace('pdf', $options['type'], $pdf_file->filename));
$image_path = $image_wrapper->realpath();
//dpm($image_path);
$exec_command ='convert -limit memory 16 -limit map 32 -quality '.$options['quality'].' -density '.$options['density'].' -verbose '.$path.' '.$image_path;
drupal_set_message($exec_command);
$result = exec($exec_command);
drupal_set_message( 'Result: '.$result);
if(strpos($result, 'error') !== FALSE){
drupla_set_message('Error detected!', 'error');
watchdog(
'pdfconverter',
'Error detected while converting to pdf: !result',
array('!result' => $result ),
WATCHDOG_ERROR );
return array();
}
$number = substr($result, strpos($result, '[') + 1, strpos($result, ']') - strpos($result, '[') - 1);
$files = array();
if($number > 0){
for($i = 0; $i<=$number; $i++){
$source = str_replace('.','-'.$i.'.', $image_path);
$files[] = $source;
}
}else{
$files[] = $image_path;
}
return $files;
drupal_set_message( 'PDF File has been successfully converted to images');
}
/**
* Form to upload a pdf and convert it into images
*/
function _pdfconverter_convert_form($form, &$form_state){
$form['pdf_file'] = array(
'#title' => 'Archivo PDF a convertir',
'#type' => 'managed_file',
'#default_value' => isset($form_state['values']['pdf_file'])?$form_state['values']['pdf_file']:0,
'#upload_location' => 'public://'
);
$form['convert'] = array(
'#type' => 'submit',
'#value' => 'Convertir'
);
return $form;
}
/**
* Submit handler for the pdf submit function
*/
function _pdfconverter_convert_form_submit($form, &$form_state){
if(!is_null($form_state['values']['pdf_file'])){
if($form_state['values']['pdf_file'] != 0){
$pdf_file = file_load($form_state['values']['pdf_file']);
$pdf_file->status = FILE_STATUS_PERMANENT;
file_save($pdf_file);
file_usage_add($pdf_file, 'pdfconverter', 'pdf', $pdf_file->fid);
$base_path = $_SERVER['DOCUMENT_ROOT'] . base_path();
$wrapper = file_stream_wrapper_get_instance_by_uri($pdf_file->uri);
$path = $wrapper->realpath();
$image_path = str_replace('pdf', 'jpg', $path);
$result = exec('convert -quality 92 -density 150 -verbose '.$path.' '.$image_path);
drupal_set_message( 'Result: '.$result);
$number = substr($result, strpos($result, '[') + 1, strpos($result, ']') - strpos($result, '[') - 1);
//drupal_set_message( 'Number of files: '.$number+1);
$base_image_url = str_replace('pdf','jpg',$wrapper->getExternalUrl());
$files = 'Files :';
for($i = 0; $i<$number; $i++){
$image_url = str_replace('.','-'.$i, $base_image_url);
$files .= '<br />'.l($image_url, $image_url);
}
drupal_set_message( $files );
drupal_set_message( 'File has been successfully converted');
}
}
}