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latex.inc
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latex.inc
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<?php
function lab_migration_download_lab_pdf()
{
$lab_id = arg(2);
_latex_copy_script_file();
$full_lab = arg(3);
if ($full_lab == "1"){
_latex_generate_files($lab_id, TRUE);
}else{
_latex_generate_files($lab_id, FALSE);
}
}
/* full lab parameter is for gennerating the entire lab pdf including all unapproved solutions */
function _latex_generate_files($lab_id, $full_lab = FALSE)
{
$root_path = lab_migration_path();
$dir_path = $root_path . "latex/";
$lab_filedata = "";
$solution_provider_filedata = "";
$latex_filedata = "";
$latex_dep_filedata = "";
$depedency_list = array();
$eol = "\n";
$sep = "#";
//$proposal_q = db_query("SELECT * FROM {lab_migration_proposal} WHERE id = %d", $lab_id);
$query = db_select('lab_migration_proposal');
$query->fields('lab_migration_proposal');
$query->condition('id', $lab_id);
$proposal_q = $query->execute();
$proposal_data = $proposal_q->fetchObject();
if (!$proposal_data)
{
drupal_set_message('Invalid lab specified.', 'error');
drupal_goto('');
}
if ($proposal_data->approval_status == 0)
{
drupal_set_message('Lab proposal is still in pending review.', 'error');
drupal_goto('');
}
$category_data = '';
switch ($proposal_data->category)
{
case 0: $category_data = 'Not Selected'; break;
case 1: $category_data = 'Fluid Mechanics'; break;
case 2: $category_data = 'Control Theory & Control Systems'; break;
case 3: $category_data = 'Chemical Engineering'; break;
case 4: $category_data = 'Thermodynamics'; break;
case 5: $category_data = 'Mechanical Engineering'; break;
case 6: $category_data = 'Signal Processing'; break;
case 7: $category_data = 'Digital Communications'; break;
case 8: $category_data = 'Electrical Technology'; break;
case 9: $category_data = 'Mathematics & Pure Science'; break;
case 10: $category_data = 'Analog Electronics'; break;
case 11: $category_data = 'Digital Electronics'; break;
case 12: $category_data = 'Computer Programming'; break;
case 13: $category_data = 'Others'; break;
default: $category_data = 'Unknown'; break;
}
$lab_filedata = $proposal_data->lab_title . $sep . $proposal_data->name_title . $sep . $proposal_data->name . $sep . $proposal_data->department . $sep . $proposal_data->university . $sep . $category_data . $eol;
/* regenerate lab if full lab selected */
if ($full_lab){
lab_migration_del_lab_pdf($proposal_data->id);
}
/* check if lab already generated */
if (file_exists($dir_path . "lab_" . $proposal_data->id . ".pdf"))
{
/* download zip file */
header('Content-Type: application/pdf');
header('Content-disposition: attachment; filename="' . $proposal_data->lab_title . '.pdf"');
header('Content-Length: ' . filesize($dir_path . "lab_" . $proposal_data->id . ".pdf"));
readfile($dir_path . "lab_" . $proposal_data->id . ".pdf");
return;
}
$solution_provider_user = user_load($proposal_data->solution_provider_uid);
if (!$solution_provider_user)
{
drupal_set_message('Could not fetch solution provider information for the lab specified.', 'error');
}
$solution_provider_filedata .= $proposal_data->solution_provider_name_title . $sep . $proposal_data->solution_provider_name . $sep . $proposal_data->solution_provider_department . $sep . $proposal_data->solution_provider_university . $eol;
//$experiment_q = db_query("SELECT * FROM {lab_migration_experiment} WHERE proposal_id = %d ORDER BY number DESC", $proposal_data->id);
$query = db_select('lab_migration_experiment');
$query->fields('lab_migration_experiment');
$query->condition('proposal_id', $proposal_data->id);
$query->orderBy('number', 'DESC');
$experiment_q = $query->execute();
while ($experiment_data = $experiment_q->fetchObject())
{
if ($full_lab){
//$solution_q = db_query("SELECT * FROM {lab_migration_solution} WHERE experiment_id = %d ORDER BY code_number DESC", $experiment_data->id);
$query = db_select('lab_migration_solution');
$query->fields('lab_migration_solution');
$query->condition('experiment_id', $experiment_data->id);
$query->orderBy('code_number', 'DESC');
$solution_q = $query->execute();
}else{
//$solution_q = db_query("SELECT * FROM {lab_migration_solution} WHERE experiment_id = %d AND approval_status = 1 ORDER BY code_number DESC", $experiment_data->id);
$query = db_select('lab_migration_solution');
$query->fields('lab_migration_solution');
$query->condition('experiment_id', $experiment_data->id);
$query->condition('approval_status', 1);
$query->orderBy('code_number', 'DESC');
$solution_q = $query->execute();
}
while ($solution_data = $solution_q->fetchObject())
{
//$solution_files_q = db_query("SELECT * FROM {lab_migration_solution_files} WHERE solution_id = %d", $solution_data->id);
$query = db_select('lab_migration_solution_files');
$query->fields('lab_migration_solution_files');
$query->condition('solution_id', $solution_data->id);
$solution_files_q = $query->execute();
while ($solution_files_data = $solution_files_q->fetchObject())
{
$latex_filedata .= $experiment_data->number . $sep;
$latex_filedata .= $experiment_data->title . $sep;
$latex_filedata .= $solution_data->code_number . $sep;
$latex_filedata .= $solution_data->caption . $sep;
$latex_filedata .= $solution_files_data->filename . $sep;
$latex_filedata .= $solution_files_data->filepath . $sep;
$latex_filedata .= $solution_files_data->filetype . $sep;
$latex_filedata .= $sep;
$latex_filedata .= $solution_files_data->id;
$latex_filedata .= $eol;
}
//$dependency_files_q = db_query("SELECT * FROM {lab_migration_solution_dependency} WHERE solution_id = %d", $solution_data->id);
$query = db_select('lab_migration_solution_dependency');
$query->fields('lab_migration_solution_dependency');
$query->condition('solution_id', $solution_data->id);
$dependency_files_q = $query->execute();
while ($dependency_files_data = $dependency_files_q->fetchObject())
{
//$dependency_q = db_query("SELECT * FROM {lab_migration_dependency_files} WHERE id = %d LIMIT 1", $dependency_files_data->dependency_id);
$query = db_select('lab_migration_dependency_files');
$query->fields('lab_migration_dependency_files');
$query->condition('id', $dependency_files_data->dependency_id);
$query->range(0, 1);
$dependency_q = $query->execute();
if ($dependency_data = $dependency_q->fetchObject())
{
if(substr($dependency_data->filename, -3) != "wav") {
$latex_filedata .= $experiment_data->number . $sep;
$latex_filedata .= $experiment_data->title . $sep;
$latex_filedata .= $solution_data->code_number . $sep;
$latex_filedata .= $solution_data->caption . $sep;
$latex_filedata .= $dependency_data->filename . $sep;
$latex_filedata .= $dependency_data->filepath . $sep;
$latex_filedata .= 'D' . $sep;
$latex_filedata .= $dependency_data->caption . $sep;
$latex_filedata .= $dependency_data->id;
$latex_filedata .= $eol;
$depedency_list[$dependency_data->id] = "D";
}
}
}
}
}
foreach ($depedency_list as $row => $data) {
//$dependency_q = db_query("SELECT * FROM {lab_migration_dependency_files} WHERE id = %d LIMIT 1", $row);
$query = db_select('lab_migration_dependency_files');
$query->fields('lab_migration_dependency_files');
$query->condition('id', $row);
$query->range(0, 1);
$dependency_q = $query->execute();
if ($dependency_data = $dependency_q->fetchObject())
{
$latex_dep_filedata .= $dependency_data->filename . $sep;
$latex_dep_filedata .= $dependency_data->filepath . $sep;
$latex_dep_filedata .= $dependency_data->caption . $sep;
$latex_dep_filedata .= $dependency_data->id;
$latex_dep_filedata .= $eol;
}
}
/**************************** WRITE TO FILES ********************************/
$download_filename = $proposal_data->lab;
$lab_filename = "tmp_" . $proposal_data->id . "_lab.txt";
$solution_provider_filename = "tmp_" . $proposal_data->id . "_solution_provider.txt";
$latex_filename = "tmp_" . $proposal_data->id . "_data.txt";
$latex_dep_filename = "tmp_" . $proposal_data->id . "_dep_data.txt";
$pdf_filename = "lab_" . $proposal_data->id . ".pdf";
$fb = fopen($dir_path . $lab_filename, 'w');
fwrite($fb, $lab_filedata);
fclose($fb);
$fc = fopen($dir_path . $solution_provider_filename, 'w');
fwrite($fc, $solution_provider_filedata);
fclose($fc);
$fl = fopen($dir_path . $latex_filename, 'w');
fwrite($fl, $latex_filedata);
fclose($fl);
$fd = fopen($dir_path . $latex_dep_filename, 'w');
fwrite($fd, $latex_dep_filedata);
fclose($fd);
if (_latex_run_script($lab_filename, $solution_provider_filename, $latex_filename, $latex_dep_filename, $pdf_filename))
{
/* download zip file */
header('Content-Type: application/pdf');
header('Content-disposition: attachment; filename="' . $proposal_data->lab_title . '_' . $proposal_data->name_title . '_' . $proposal_data->name . '.pdf"');
header('Content-Length: ' . filesize($dir_path . $pdf_filename));
readfile($dir_path . $pdf_filename);
} else {
drupal_set_message("Error occurred when generating the PDF version of the Book.", 'error');
}
/*********************** DELETING TEMPORARY FILES ***************************/
/* regenerate lab if full lab selected */
if ($full_lab)
lab_migration_del_lab_pdf($proposal_data->id);
}
function _latex_copy_script_file()
{
exec("cp ./" . drupal_get_path('module', 'lab_migration') . "/latex/* " . lab_migration_path() . "latex");
exec("chmod u+x ./uploads/latex/*.sh");
}
function _latex_run_script($lab_filename, $solution_provider_filename, $latex_filename, $latex_dep_filename, $pdf_filename)
{
$root_path = lab_migration_path();
$ret = 0;
chdir("lab_migration_uploads");
chdir("latex");
$sh_command = "./pdf_creator.sh " . $lab_filename . " " . $solution_provider_filename . " " . $latex_filename . " " . $latex_dep_filename;
exec($sh_command);
exec("mv TEX_final.pdf " . $pdf_filename);
if ($ret == 0)
return TRUE;
else
return FALSE;
}
function lab_migration_delete_lab_pdf()
{
$lab_id = arg(3);
lab_migration_del_lab_pdf($lab_id);
drupal_set_message(t('Lab schedule for regeneration.'), 'status');
drupal_goto('lab_migration/code_approval/bulk');
return;
}