<?php

include_once 'data.php';

if (isset($_SESSION['auth'])) {

include_once 'functions.php';

$proxy_name = '';

$proxy_port = '';

$proxy_username = '';

$proxy_password = '';

if (isset($_SESSION['connection']) && ($_SESSION['connection'] == "autodetect" || $_SESSION['connection'] == "url")) {

if (!empty($_GET['proxystr'])) {

$proxy_arr = explode(';', $_GET['proxystr']);

foreach ($proxy_arr as $proxy_str) {

if (stripos(trim($proxy_str), 'PROXY') === 0) {

$proxy_str = trim(substr($proxy_str, 6));

$proxy_name = parse_url($proxy_str, PHP_URL_HOST);

$proxy_port = parse_url($proxy_str, PHP_URL_PORT);

$proxy_username = parse_url($proxy_str, PHP_URL_USER);

$proxy_password = parse_url($proxy_str, PHP_URL_PASS);

break;

}

}

}

} elseif (isset($_SESSION['connection']) && $_SESSION['connection'] == "proxy") {

if (isset($_SESSION['proxy_name']))

$proxy_name = $_SESSION['proxy_name'];

if (isset($_SESSION['proxy_port']))

$proxy_port = $_SESSION['proxy_port'];

if (isset($_SESSION['proxy_username']))

$proxy_username = $_SESSION['proxy_username'];

if (isset($_SESSION['proxy_password']))

$proxy_password = $_SESSION['proxy_password'];

}

########## register empty checkboxes ##############

$checkboxes = array('physics', 'cs', 'math', 'nlin', 'q-bio', 'q-fin', 'stat',

'physics_all', 'physics_astro-ph', 'physics_cond-mat', 'physics_gr-qc',

'physics_hep-ex', 'physics_hep-lat', 'physics_hep-ph', 'physics_hep-th',

'physics_math-ph', 'physics_nucl-ex', 'physics_nucl-th', 'physics_physics', 'physics_quant-ph');

while (list($key, $value) = each($checkboxes)) {

if (isset($_GET['arxiv_last_search']) && !isset($_GET['arxiv_category_' . $value]))

$_GET['arxiv_category_' . $value] = '';

}

########## reset button ##############

if (isset($_GET['newsearch'])) {

while (list($key, $value) = each($_SESSION)) {

if (strstr($key, 'session_download_arxiv'))

unset($_SESSION[$key]);

}

}

########## save button ##############

if (isset($_GET['save']) && $_GET['save'] == '1' && !empty($_GET['arxiv_searchname'])) {

database_connect(IL_DATABASE_PATH, 'library');

$stmt = $dbHandle->prepare("DELETE FROM searches WHERE userID=:user AND searchname=:searchname");

$stmt->bindParam(':user', $user, PDO::PARAM_STR);

$stmt->bindParam(':searchname', $searchname, PDO::PARAM_STR);

$stmt2 = $dbHandle->prepare("INSERT INTO searches (userID,searchname,searchfield,searchvalue) VALUES (:user,:searchname,:searchfield,:searchvalue)");

$stmt2->bindParam(':user', $user, PDO::PARAM_STR);

$stmt2->bindParam(':searchname', $searchname, PDO::PARAM_STR);

$stmt2->bindParam(':searchfield', $searchfield, PDO::PARAM_STR);

$stmt2->bindParam(':searchvalue', $searchvalue, PDO::PARAM_STR);

$dbHandle->beginTransaction();

$user = $_SESSION['user_id'];

$searchname = "arxiv#" . $_GET['arxiv_searchname'];

$stmt->execute();

reset($_GET);

while (list($key, $value) = each($_GET)) {

if (!empty($key) && strstr($key, "arxiv_") && $key != 'arxiv_last_search') {

$user = $_SESSION['user_id'];

$searchname = "arxiv#" . $_GET['arxiv_searchname'];

if ($key != "arxiv_searchname") {

$searchfield = $key;

$searchvalue = $value;

$stmt2->execute();

}

}

}

$user = $_SESSION['user_id'];

$searchname = "arxiv#" . $_GET['arxiv_searchname'];

$searchfield = 'arxiv_last_search';

$searchvalue = '1';

$stmt2->execute();

$dbHandle->commit();

}

########## load button ##############

if (isset($_GET['load']) && $_GET['load'] == '1' && !empty($_GET['saved_search'])) {

database_connect(IL_DATABASE_PATH, 'library');

$stmt = $dbHandle->prepare("SELECT searchfield,searchvalue FROM searches WHERE userID=:user AND searchname=:searchname");

$stmt->bindParam(':user', $user, PDO::PARAM_STR);

$stmt->bindParam(':searchname', $searchname, PDO::PARAM_STR);

$user = $_SESSION['user_id'];

$searchname = "arxiv#" . $_GET['saved_search'];

$stmt->execute();

reset($_SESSION);

while (list($key, $value) = each($_SESSION)) {

if (strstr($key, 'session_download_arxiv'))

unset($_SESSION[$key]);

}

$_GET = array();

$_GET['load'] = 'Load';

$_GET['arxiv_searchname'] = substr($searchname, 6);

while ($search = $stmt->fetch(PDO::FETCH_BOTH)) {

$_GET{$search['searchfield']} = $search['searchvalue'];

}

}

########## delete button ##############

if (isset($_GET['delete']) && $_GET['delete'] == '1' && !empty($_GET['saved_search'])) {

database_connect(IL_DATABASE_PATH, 'library');

$dbHandle->beginTransaction();

$stmt = $dbHandle->prepare("DELETE FROM searches WHERE userID=:user AND searchname=:searchname");

$stmt->bindParam(':user', $user, PDO::PARAM_STR);

$stmt->bindParam(':searchname', $searchname, PDO::PARAM_STR);

$user = $_SESSION['user_id'];

$searchname = "arxiv#" . $_GET['saved_search'];

$stmt->execute();

$dbHandle->commit();

while (list($key, $value) = each($_SESSION)) {

if (strstr($key, 'session_download_arxiv'))

unset($_SESSION[$key]);

}

$_GET = array();

}

########## main body ##############

$microtime1 = microtime(true);

reset($_GET);

while (list($key, $value) = each($_GET)) {

if (!empty($_GET[$key]))

$_SESSION['session_download_' . $key] = $value;

}

if (isset($_GET['arxiv_searchname']))

$_SESSION['session_download_arxiv_searchname'] = $_GET['arxiv_searchname'];

########## register variables ##############

$parameter_string = '';

if (!isset($_GET['from'])) {

$_GET['from'] = '1';

$from = $_GET['from'];

} else {

$from = intval($_GET['from']);

}

########## prepare arXiv query ##############

$edat_string = '';

if (!empty($_GET['arxiv_edat'])) {

if ($_GET['arxiv_edat'] == 'last search') {

$entry_date = date("Ymd", $_GET['arxiv_last_search']);

} else {

$entry_date = date("Ymd", time() - ($_GET['arxiv_edat'] - 1) * 86400);

}

$edat_string = urlencode(" AND submittedDate:[$entry_date TO " . date("Ymd") . "]");

}

$year_string = '';

if (!empty($_GET['arxiv_start_year']) && $_GET['arxiv_start_year'] < 2100 && $_GET['arxiv_start_year'] > 1900) {

if (!empty($_GET['arxiv_end_year']) && $_GET['arxiv_start_year'] < $_GET['arxiv_end_year'] && $_GET['arxiv_end_year'] < 2100 && $_GET['arxiv_end_year'] > 1900) {

$year_array = array();

for ($i = $_GET['arxiv_start_year']; $i <= $_GET['arxiv_end_year']; $i++) {

$year_array[] = $i;

}

$year_string = join(" OR ", $year_array);

$year_string = "($year_string)";

} else {

$year_string = $_GET['arxiv_start_year'];

}

$year_string = urlencode(" AND date:$year_string");

}

$category_array = array();

$category_array2 = array();

$category_string = '';

$url_array = array();

reset($_GET);

while (list($key, $value) = each($_GET)) {

if (strstr($key, "arxiv_category_")) {

if (!strstr($key, "arxiv_category_physics_") && $_GET[$key] != 'all' && !empty($_GET[$key]))

$category_array[] = $_GET[$key] . '.*';

if (strstr($key, "arxiv_category_physics_") && !empty($_GET[$key]) && $_GET[$key] != 'all')

$category_array[] = $_GET[$key];

if ($_GET['arxiv_category_physics_all'] == 'all') {

$category_array2 = array('astro-ph', 'cond-mat', 'gr-qc', 'hep-ex', 'hep-lat', 'hep-ph',

'hep-th', 'math-ph', 'nucl-ex', 'nucl-th', 'physics', 'quant-ph');

}

}

if ($key != 'from' && $key != 'proxystr')

$url_array[] = "$key=" . urlencode($value);

}

$category_array = array_merge($category_array, $category_array2);

$category_array = array_filter(array_unique($category_array));

if (!empty($category_array)) {

$category_string = join(" OR ", $category_array);

$category_string = urlencode(" AND cat:($category_string)");

}

$url_string = join("&", $url_array);

$query_array = array();

$id_array = array();

$k = 1;

for ($i = 1; $i < 8; $i++) {

if (!empty($_GET['arxiv_query' . $i])) {

$query_array[] = (($k > 1) ? ' ' . $_GET['arxiv_operator' . $i] . ' ' : '') . $_GET['arxiv_selection' . $i] . ':' . $_GET['arxiv_query' . $i];

if ($_GET['arxiv_selection' . $i] == 'id')

$id_array[] = $_GET['arxiv_query' . $i];

$k = $k + 1;

}

}

$query_array = array_filter($query_array);

$query_string = join('', $query_array);

$query_string = 'search_query=' . urlencode($query_string);

if (!empty($id_array)) {

$query_string = join(',', $id_array);

$query_string = 'id_list=' . urlencode($query_string);

}

########## search arXiv ##############

if (!empty($query_array) && empty($_GET['load']) && empty($_GET['save']) && empty($_GET['delete'])) {

############# caching ################

$cache_name = cache_name();

$cache_name .= '_download';

$db_change = database_change(array(

'library'

));

cache_start($db_change);

########## register the time of search ##############

if (!empty($_SESSION['session_download_arxiv_searchname']) && $from == 1) {

database_connect(IL_DATABASE_PATH, 'library');

$stmt = $dbHandle->prepare("UPDATE searches SET searchvalue=:searchvalue WHERE userID=:user AND searchname=:searchname AND searchfield='arxiv_last_search'");

$stmt->bindParam(':user', $user, PDO::PARAM_STR);

$stmt->bindParam(':searchname', $searchname, PDO::PARAM_STR);

$stmt->bindParam(':searchvalue', $searchvalue, PDO::PARAM_STR);

$user = $_SESSION['user_id'];

$searchname = "arxiv#" . $_SESSION['session_download_arxiv_searchname'];

$searchvalue = time();

$stmt->execute();

}

########## search arXiv ##############

$request_url = "http://export.arxiv.org/api/query?" . $query_string . $category_string . $edat_string . $year_string . "&start=" . ($from - 1) . "&max_results=10&sortBy=lastUpdatedDate&sortOrder=descending";

$xml = proxy_simplexml_load_file($request_url, $proxy_name, $proxy_port, $proxy_username, $proxy_password);

if (empty($xml))

die('Error! I, Librarian could not connect with an external web service. This usually indicates that you access the Web through a proxy server.

Enter your proxy details in Tools->Settings. Alternatively, the external service may be temporarily down. Try again later.');

}

########## display search result summaries ##############

if (!empty($xml)) {

print '<div style="padding:2px;font-weight:bold">arXiv search';

if (!empty($_SESSION['session_download_arxiv_searchname']))

print ': ' . htmlspecialchars($_SESSION['session_download_arxiv_searchname']);

print '</div>';

$count = 0;

$xmlxml = $xml->asXML();

preg_match('/<opensearch:totalResults.*opensearch:totalResults>/', $xmlxml, $xmlxml_match);

if (isset($xmlxml_match[0]))

$count = strip_tags($xmlxml_match[0]);

if ($count > 0) {

$maxfrom = $from + 9;

if ($maxfrom > $count)

$maxfrom = $count;

$microtime2 = microtime(true);

$microtime = $microtime2 - $microtime1;

$microtime = sprintf("%01.1f seconds", $microtime);

print '<table class="top" style="margin-bottom:1px"><tr><td class="top" style="width: 13em">';

print '<div class="ui-state-default ui-corner-top' . ($from == 1 ? ' ui-state-disabled' : '') . '" style="float:left;margin-left:2px;width:26px;text-align: center">'

. ($from == 1 ? '' : '<a class="navigation" href="' . htmlspecialchars('download_arxiv.php?' . $url_string . '&from=1') . '" style="display:block;width:26px">') .

'&nbsp;<i class="fa fa-caret-left"></i> <i class="fa fa-caret-left"></i>&nbsp;'

. ($from == 1 ? '' : '</a>') .

'</div>';

print '<div class="ui-state-default ui-corner-top' . ($from == 1 ? ' ui-state-disabled' : '') . '" style="float:left;margin-left:2px;width:4em;text-align: center">'

. ($from == 1 ? '' : '<a class="navigation" href="' . htmlspecialchars('download_arxiv.php?' . $url_string . '&from=' . ($from - 10)) . '" style="color:black;display:block;width:100%">') .

'<i class="fa fa-caret-left"></i>&nbsp;Back'

. ($from == 1 ? '' : '</a>') .

'</div>';

print '</td><td class="top" style="text-align: center">';

print "Items $from - $maxfrom of $count in $microtime.";

print '</td><td class="top" style="width: 14em">';

(($count % 10) == 0) ? $lastpage = 1 + $count - 10 : $lastpage = 1 + $count - ($count % 10);

print '<div class="ui-state-default ui-corner-top' . ($count >= $from + 10 ? '' : ' ui-state-disabled') . '" style="float:right;margin-right:2px;width:26px;text-align: center">'

. ($count >= $from + 10 ? '<a class="navigation" href="' . htmlspecialchars('download_arxiv.php?' . $url_string . '&from=' . $lastpage) . '" style="display:block;width:26px">' : '') .

'<i class="fa fa-caret-right"></i>&nbsp;<i class="fa fa-caret-right"></i>'

. ($count >= $from + 10 ? '</a>' : '') .

'</div>';

print '<div class="ui-state-default ui-corner-top' . ($count >= $from + 10 ? '' : ' ui-state-disabled') . '" style="float:right;margin-right:2px;width:4em;text-align: center">'

. ($count >= $from + 10 ? '<a class="navigation" href="' . htmlspecialchars("download_arxiv.php?$url_string&from=" . ($from + 10)) . '" style="color:black;display:block;width:100%">' : '') .

'&nbsp;Next <i class="fa fa-caret-right"></i>&nbsp;'

. ($count >= $from + 10 ? '</a>' : '') .

'</div>';

print '<div class="ui-state-default ui-corner-top pgdown" style="float: right;width: 4em;margin-right:2px;text-align: center">PgDn</div>';

print '</td></tr></table>';

print '<div class="alternating_row">';

database_connect(IL_DATABASE_PATH, 'library');

$id = '';

$title = '';

$journal_abbr = '';

$pub_date = '';

foreach ($xml->entry as $record) {

$id = '';

$doi = '';

$title = '';

$secondary_title = '';

$pub_date = '';

$year = '';

$abstract = '';

$authors = array();

$name_array = array();

$names = '';

$keywords = '';

$uid = '';

$url = '';

$new_authors = array();

$id = $record->id;

$id = preg_replace('/http:\/\/arxiv\.org\/abs\//i', '', $id);

$title = $record->title;

$journal_ref = '';

$secondary_title = 'eprint';

$children = $record->children('http://arxiv.org/schemas/atom');

$journal_ref = $children->journal_ref;

if (!empty($journal_ref))

$secondary_title = $journal_ref;

$doi = $children->doi;

$pub_date = $record->published;

$year = date("Y-m-j", strtotime($pub_date));

$abstract = trim($record->summary);

$authors = $record->author;

$last_name = array();

$first_name = array();

if (!empty($authors)) {

foreach ($authors as $author) {

$author = $author->name;

$author_array = explode(' ', $author);

$last = array_pop($author_array);

$first = join(' ', $author_array);

$name_array[] = $last . ', ' . $first;

$last_name[] = $last;

$first_name[] = $first;

}

}

if (isset($name_array))

$names = join("; ", $name_array);

$category = $children->primary_category;

$keywords = $category->attributes();

$uid = "ARXIV:$id";

$url = "http://arxiv.org/abs/$id";

if (!empty($id) && !empty($title)) {

########## gray out existing records ##############

$existing_id = '';

$title_query = $dbHandle->quote(substr($title, 0, -1) . "%");

$result_query = $dbHandle->query("SELECT id FROM library WHERE title LIKE $title_query AND length(title) <= length($title_query)+2 LIMIT 1");

$existing_id = $result_query->fetchColumn();

//IS FLAGGED?

$relation = 0;

$id_query = $dbHandle->quote($id);

$result = $dbHandle->query("SELECT count(*) FROM flagged WHERE userID=" . intval($_SESSION['user_id']) . " AND database='arxiv' AND uid=" . $id_query . " LIMIT 1");

if ($result)

$relation = $result->fetchColumn();

$result = null;

print '<div class="items" data-uid="' . htmlspecialchars($id) . '" style="padding:0">';

print '<div class="ui-widget-header" style="border-left:0;border-right:0">';

print '<div class="flag ' . (($relation == 1) ? 'ui-state-error-text' : 'ui-priority-secondary') . '" style="float:right;margin:4px"><i class="fa fa-flag"></i></div>';

print '<div class="titles brief" style="overflow:hidden;margin-right:30px';

if (is_numeric($existing_id))

print ';color: #777';

print '">' . $title . '</div>';

print '</div>';

print '<div class="firstcontainer items">';

print htmlspecialchars($secondary_title);

if ($year != '')

print " ($year)";

if (!empty($names))

print '<div class="authors"><i class="author_expander fa fa-plus-circle"></i> ' . htmlspecialchars($names) . '</div>';

print '<a href="' . htmlspecialchars('http://arxiv.org/abs/' . $id) . '" target="_blank">arXiv</a>';

print ' <b>&middot;</b> <a href="' . htmlspecialchars("http://arxiv.org/pdf/" . $id) . '" target="_blank">PDF preprint</a>';

if (!empty($doi))

print ' <b>&middot;</b> <a href="' . htmlspecialchars("http://dx.doi.org/" . urlencode($doi)) . '" target="_blank">Publisher Website</a>';

print '</div>';

print '<div class="abstract_container" style="display:none">';

########## print results into table ##########

print '<form enctype="application/x-www-form-urlencoded" action="upload.php" method="POST" class="fetch-form">';

print '<div class="items">';

print '<div>';

if (!empty($secondary_title))

print htmlspecialchars($secondary_title);

if (!empty($year))

print " (" . htmlspecialchars($year) . ")";

print '</div>';

if (!empty($names)) {

print '<div class="authors"><i class="author_expander fa fa-plus-circle"></i> ' . htmlspecialchars($names) . '</div>';

$array = explode(';', $names);

$array = array_filter($array);

if (!empty($array)) {

foreach ($array as $author) {

$array2 = explode(',', $author);

$last = trim($array2[0]);

$first = trim($array2[1]);

$new_authors[] = 'L:"' . $last . '",F:"' . $first . '"';

}

$names = join(';', $new_authors);

}

}

print '</div>';

print '<div class="abstract" style="padding:0 10px">';

!empty($abstract) ? print htmlspecialchars($abstract) : print 'No abstract available.';

print '</div><div class="items">';

?>

<input type="hidden" name="uid[]" value="<?php if (!empty($uid)) print htmlspecialchars($uid); ?>">

<input type="hidden" name="doi" value="<?php if (!empty($doi)) print htmlspecialchars($doi); ?>">

<input type="hidden" name="url[]" value="<?php if (!empty($url)) print htmlspecialchars($url); ?>">

<input type="hidden" name="last_name" value="<?php if (!empty($last_name)) print htmlspecialchars(json_encode($last_name)); ?>">

<input type="hidden" name="first_name" value="<?php if (!empty($first_name)) print htmlspecialchars(json_encode($first_name)); ?>">

<input type="hidden" name="title" value="<?php if (!empty($title)) print htmlspecialchars($title); ?>">

<input type="hidden" name="secondary_title" value="<?php if (!empty($secondary_title)) print htmlspecialchars($secondary_title); ?>">

<input type="hidden" name="journal_abbr" value="<?php if (!empty($journal_abbr)) print htmlspecialchars($journal_abbr); ?>">

<input type="hidden" name="year" value="<?php if (!empty($year)) print htmlspecialchars($year); ?>">

<input type="hidden" name="keywords" value="<?php if (!empty($keywords)) print htmlspecialchars($keywords); ?>">

<input type="hidden" name="abstract" value="<?php print !empty($abstract) ? htmlspecialchars($abstract) : "No abstract available."; ?>">

<input type="hidden" name="form_new_file_link" value="<?php print !empty($id) ? htmlspecialchars("http://arxiv.org/pdf/" . $id) : ""; ?>">

<?php

########## print full text links ##########

print '<b>Full text options:</b><br>';

print '<a href="' . htmlspecialchars('http://arxiv.org/abs/' . $id) . '" target="_blank">arXiv</a>';

print ' <b>&middot;</b> <a href="' . htmlspecialchars("http://arxiv.org/pdf/" . $id) . '" target="_blank">PDF preprint</a>';

if (!empty($doi))

print ' <b>&middot;</b> <a href="' . htmlspecialchars("http://dx.doi.org/" . urlencode($doi)) . '" target="_blank">Publisher Website</a>';

print '<br><button class="save-item"><i class="fa fa-save"></i> Save</button> <button class="quick-save-item"><i class="fa fa-save"></i> Quick Save</button>';

print '</div></form>';

print '</div>';

print '<div class="save_container"></div>';

print '</div>';

}

}

$dbHandle = null;

print '</div>';

print '<table class="top" style="margin-top:1px"><tr><td class="top" style="width: 50%">';

print '<div class="ui-state-default ui-corner-bottom' . ($from == 1 ? ' ui-state-disabled' : '') . '" style="float:left;margin-left:2px;width:26px;text-align: center">'

. ($from == 1 ? '' : '<a class="navigation" href="' . htmlspecialchars('download_arxiv.php?' . $url_string . '&from=1') . '" style="display:block;width:26px">') .

'&nbsp;<i class="fa fa-caret-left"></i> <i class="fa fa-caret-left"></i>&nbsp;'

. ($from == 1 ? '' : '</a>') .

'</div>';

print '<div class="ui-state-default ui-corner-bottom' . ($from == 1 ? ' ui-state-disabled' : '') . '" style="float:left;margin-left:2px;width:4em;text-align: center">'

. ($from == 1 ? '' : '<a class="navigation prevpage" href="' . htmlspecialchars('download_arxiv.php?' . $url_string . '&from=' . ($from - 10)) . '" style="color:black;display:block;width:100%">') .

'<i class="fa fa-caret-left"></i>&nbsp;Back'

. ($from == 1 ? '' : '</a>') .

'</div>';

print '</td><td class="top" style="width: 50%">';

print '<div class="ui-state-default ui-corner-bottom' . ($count >= $from + 10 ? '' : ' ui-state-disabled') . '" style="float:right;margin-right:2px;width:26px;text-align: center">'

. ($count >= $from + 10 ? '<a class="navigation" href="' . htmlspecialchars('download_arxiv.php?' . $url_string . '&from=' . $lastpage) . '" style="display:block;width:26px">' : '') .

'<i class="fa fa-caret-right"></i>&nbsp;<i class="fa fa-caret-right"></i>'

. ($count >= $from + 10 ? '</a>' : '') .

'</div>';

print '<div class="ui-state-default ui-corner-bottom' . ($count >= $from + 10 ? '' : ' ui-state-disabled') . '" style="float:right;margin-right:2px;width:4em;text-align: center">'

. ($count >= $from + 10 ? '<a class="navigation nextpage" href="' . htmlspecialchars("download_arxiv.php?$url_string&from=" . ($from + 10)) . '" style="color:black;display:block;width:100%">' : '') .

'&nbsp;Next <i class="fa fa-caret-right"></i>&nbsp;'

. ($count >= $from + 10 ? '</a>' : '') .

'</div>';

print '<div class="ui-state-default ui-corner-bottom pgup" style="float:right;width:4em;margin-right:2px;text-align: center">PgUp</div>';

print '</td></tr></table>';

} else {

print '<div style="position:relative;top:43%;left:40%;color:#bbbbbb;font-size:28px;width:200px"><b>No Items</b></div>';

}

############# caching #############

cache_store();

} else {

########## input table ##############

?>

<div style="text-align: left">

<form enctype="application/x-www-form-urlencoded" action="download_arxiv.php" method="GET" id="download-form">

<div class="ui-state-default ui-corner-all" style="float:left;margin:4px 4px 2px 4px;padding:1px 4px">

<a href="http://arxiv.org/find" target="_blank" style="display:block"><i class="fa fa-external-link"></i> arXiv</a>

</div>

<div style="clear:both"></div>

<table class="threed" style="width:100%">

<tr>

<td class="threed" colspan="3">

<button id="download-search"><i class="fa fa-save"></i> Search</button>

<button id="download-reset"><i class="fa fa-reply"></i> Reset</button>

<button id="download-clear"><i class="fa fa-trash-o"></i> Clear</button>

</td>

</tr>

<?php

for ($i = 1; $i < 8; $i++) {

print ' <tr>

<td class="threed" style="width:12em">

<select name="arxiv_selection' . $i . '">

<option value="all" ' . ((($i == 1 && !isset($_SESSION['session_download_arxiv_selection' . $i])) || (isset($_SESSION['session_download_arxiv_selection' . $i]) && $_SESSION['session_download_arxiv_selection' . $i] == 'all')) ? 'selected' : '') . '>anywhere</option>

<option value="au" ' . ((($i == 2 && !isset($_SESSION['session_download_arxiv_selection' . $i])) || (isset($_SESSION['session_download_arxiv_selection' . $i]) && $_SESSION['session_download_arxiv_selection' . $i] == 'au')) ? 'selected' : '') . '>authors</option>

<option value="ti" ' . ((($i == 3 && !isset($_SESSION['session_download_arxiv_selection' . $i])) || (isset($_SESSION['session_download_arxiv_selection' . $i]) && $_SESSION['session_download_arxiv_selection' . $i] == 'ti')) ? 'selected' : '') . '>title</option>

<option value="abs" ' . ((($i == 4 && !isset($_SESSION['session_download_arxiv_selection' . $i])) || (isset($_SESSION['session_download_arxiv_selection' . $i]) && $_SESSION['session_download_arxiv_selection' . $i] == 'abs')) ? 'selected' : '') . '>abstract</option>

<option value="jr" ' . ((($i == 5 && !isset($_SESSION['session_download_arxiv_selection' . $i])) || (isset($_SESSION['session_download_arxiv_selection' . $i]) && $_SESSION['session_download_arxiv_selection' . $i] == 'jr')) ? 'selected' : '') . '>journal</option>

<option value="rn" ' . ((($i == 6 && !isset($_SESSION['session_download_arxiv_selection' . $i])) || (isset($_SESSION['session_download_arxiv_selection' . $i]) && $_SESSION['session_download_arxiv_selection' . $i] == 'rn')) ? 'selected' : '') . '>report number</option>

<option value="id" ' . ((($i == 7 && !isset($_SESSION['session_download_arxiv_selection' . $i])) || (isset($_SESSION['session_download_arxiv_selection' . $i]) && $_SESSION['session_download_arxiv_selection' . $i] == 'id')) ? 'selected' : '') . '>identifier</option>

</select>

</td>

<td class="threed">

<input type="text" name="arxiv_query' . $i . '" value="' . htmlspecialchars((isset($_SESSION['session_download_arxiv_query' . $i])) ? $_SESSION['session_download_arxiv_query' . $i] : '') . '" size="65" style="width:99.5%">

</td>

<td class="threed" style="width:10em">

<select name="arxiv_operator' . $i . '">

<option ' . ((isset($_SESSION['session_download_arxiv_operator' . $i]) && $_SESSION['session_download_arxiv_operator' . $i] == 'AND') ? 'selected' : '') . '>AND</option>

<option ' . ((isset($_SESSION['session_download_arxiv_operator' . $i]) && $_SESSION['session_download_arxiv_operator' . $i] == 'OR') ? 'selected' : '') . '>OR</option>

<option ' . ((isset($_SESSION['session_download_arxiv_operator' . $i]) && $_SESSION['session_download_arxiv_operator' . $i] == 'ANDNOT') ? 'selected' : '') . '>ANDNOT</option>

</select>

</td>

</tr>';

}

?>

<tr>

<td class="threed">

Years published:

</td>

<td class="threed">

<input type="text" name="arxiv_start_year" size="5" value="<?php print isset($_SESSION['session_download_arxiv_start_year']) ? htmlspecialchars($_SESSION['session_download_arxiv_start_year']) : ''; ?>">

- (<input type="text" name="arxiv_end_year" size="5" value="<?php print isset($_SESSION['session_download_arxiv_end_year']) ? htmlspecialchars($_SESSION['session_download_arxiv_end_year']) : ''; ?>">)

</td>

<td style="border: 0px; background-color: transparent">

</td>

</tr>

<tr>

<td style="border: 0px; background-color: transparent">

Limits:

</td>

<td style="border: 0px; background-color: transparent">

</td>

<td style="border: 0px; background-color: transparent">

</td>

<tr>

<td class="threed">

Categories to query:

</td>

<td class="threed">

<div style="float: left;margin-right: 10px">

<input type="checkbox" name="arxiv_category_physics" value="physics" <?php print (!empty($_SESSION['session_download_arxiv_category_physics'])) ? 'checked' : '' ?>>Physics ---------------------><br>

<input type="checkbox" name="arxiv_category_cs" value="cs" <?php print (!empty($_SESSION['session_download_arxiv_category_cs'])) ? 'checked' : '' ?>>Computer Science<br>

<input type="checkbox" name="arxiv_category_math" value="math" <?php print (!empty($_SESSION['session_download_arxiv_category_math'])) ? 'checked' : '' ?>>Mathematics<br>

<input type="checkbox" name="arxiv_category_nlin" value="nlin" <?php print (!empty($_SESSION['session_download_arxiv_category_nlin'])) ? 'checked' : '' ?>>Nonlinear Sciences<br>

<input type="checkbox" name="arxiv_category_q-bio" value="q-bio" <?php print (!empty($_SESSION['session_download_arxiv_category_q-bio'])) ? 'checked' : '' ?>>Quantitative Biology<br>

<input type="checkbox" name="arxiv_category_q-fin" value="q-fin" <?php print (!empty($_SESSION['session_download_arxiv_category_q-fin'])) ? 'checked' : '' ?>>Quantitative Finance<br>

<input type="checkbox" name="arxiv_category_stat" value="stat" <?php print (!empty($_SESSION['session_download_arxiv_category_stat'])) ? 'checked' : '' ?>>Statistics

</div>

<div style="float: left;margin-right: 10px">

<input type="checkbox" name="arxiv_category_physics_all" value="all" <?php print (!empty($_SESSION['session_download_arxiv_category_physics_all'])) ? 'checked' : '' ?>>all<br>

<input type="checkbox" name="arxiv_category_physics_astro-ph" value="astro-ph" <?php print (!empty($_SESSION['session_download_arxiv_category_physics_astro-ph'])) ? 'checked' : '' ?>>astro-ph<br>

<input type="checkbox" name="arxiv_category_physics_cond-mat" value="cond-mat" <?php print (!empty($_SESSION['session_download_arxiv_category_physics_cond-mat'])) ? 'checked' : '' ?>>cond-mat<br>

<input type="checkbox" name="arxiv_category_physics_gr-qc" value="gr-qc" <?php print (!empty($_SESSION['session_download_arxiv_category_physics_gr-qc'])) ? 'checked' : '' ?>>gr-qc<br>

<input type="checkbox" name="arxiv_category_physics_hep-ex" value="hep-ex" <?php print (!empty($_SESSION['session_download_arxiv_category_physics_hep-ex'])) ? 'checked' : '' ?>>hep-ex<br>

<input type="checkbox" name="arxiv_category_physics_hep-lat" value="hep-lat" <?php print (!empty($_SESSION['session_download_arxiv_category_physics_hep-lat'])) ? 'checked' : '' ?>>hep-lat<br>

<input type="checkbox" name="arxiv_category_physics_hep-ph" value="hep-ph" <?php print (!empty($_SESSION['session_download_arxiv_category_physics_hep-ph'])) ? 'checked' : '' ?>>hep-ph<br>

</div>

<div style="float: left;margin-top: 19px">

<input type="checkbox" name="arxiv_category_physics_hep-th" value="hep-th" <?php print (!empty($_SESSION['session_download_arxiv_category_physics_hep-th'])) ? 'checked' : '' ?>>hep-th<br>

<input type="checkbox" name="arxiv_category_physics_math-ph" value="math-ph" <?php print (!empty($_SESSION['session_download_arxiv_category_physics_math-ph'])) ? 'checked' : '' ?>>math-ph<br>

<input type="checkbox" name="arxiv_category_physics_nucl-ex" value="nucl-ex" <?php print (!empty($_SESSION['session_download_arxiv_category_physics_nucl-ex'])) ? 'checked' : '' ?>>nucl-ex<br>

<input type="checkbox" name="arxiv_category_physics_nucl-th" value="nucl-th" <?php print (!empty($_SESSION['session_download_arxiv_category_physics_nucl-th'])) ? 'checked' : '' ?>>nucl-th<br>

<input type="checkbox" name="arxiv_category_physics_physics" value="physics" <?php print (!empty($_SESSION['session_download_arxiv_category_physics_physics'])) ? 'checked' : '' ?>>physics<br>

<input type="checkbox" name="arxiv_category_physics_quant-ph" value="quant-ph" <?php print (!empty($_SESSION['session_download_arxiv_category_physics_quant-ph'])) ? 'checked' : '' ?>>quant-ph

</div>

</td>

<td style="border: 0px; background-color: transparent">

</td>

</tr>

<tr>

<td class="threed">

Search within the last:

</td>

<td class="threed">

<select name="arxiv_edat">

<option value=""></option>

<option value="2" <?php print isset($_SESSION['session_download_arxiv_edat']) && $_SESSION['session_download_arxiv_edat'] == '2' ? 'selected' : ''; ?>>2 days</option>

<option value="5" <?php print isset($_SESSION['session_download_arxiv_edat']) && $_SESSION['session_download_arxiv_edat'] == '5' ? 'selected' : ''; ?>>5 days</option>

<option value="7" <?php print isset($_SESSION['session_download_arxiv_edat']) && $_SESSION['session_download_arxiv_edat'] == '7' ? 'selected' : ''; ?>>1 week</option>

<option value="14" <?php print isset($_SESSION['session_download_arxiv_edat']) && $_SESSION['session_download_arxiv_edat'] == '14' ? 'selected' : ''; ?>>2 weeks</option>

<option value="31" <?php print isset($_SESSION['session_download_arxiv_edat']) && $_SESSION['session_download_arxiv_edat'] == '31' ? 'selected' : ''; ?>>1 month</option>

<option value="92" <?php print isset($_SESSION['session_download_arxiv_edat']) && $_SESSION['session_download_arxiv_edat'] == '92' ? 'selected' : ''; ?>>3 months</option>

<option value="183" <?php print isset($_SESSION['session_download_arxiv_edat']) && $_SESSION['session_download_arxiv_edat'] == '183' ? 'selected' : ''; ?>>6 months</option>

<option value="365" <?php print isset($_SESSION['session_download_arxiv_edat']) && $_SESSION['session_download_arxiv_edat'] == '365' ? 'selected' : ''; ?>>1 year</option>

<option value="last search" <?php print isset($_SESSION['session_download_arxiv_edat']) && $_SESSION['session_download_arxiv_edat'] == 'last search' ? 'selected' : ''; ?>>since last search</option>

</select>

<input type="hidden" name="arxiv_last_search" value="<?php print isset($_SESSION['session_download_arxiv_last_search']) ? $_SESSION['session_download_arxiv_last_search'] : '1'; ?>">

</td>

<td style="border: 0px; background-color: transparent">

</td>

</tr>

<tr>

<td class="threed">

Save search as:

</td>

<td class="threed">

<input type="text" name="arxiv_searchname" size="35" style="width:50%" value="<?php print isset($_SESSION['session_download_arxiv_searchname']) ? htmlspecialchars($_SESSION['session_download_arxiv_searchname']) : '' ?>">

&nbsp;<button id="download-save"><i class="fa fa-save"></i> Save</button>

</td>

<td style="border: 0px; background-color: transparent">

</td>

</tr>

</table>

&nbsp;<a href="http://arxiv.org/find#help" target="_blank">Help</a>

</form>

</div>

<?php

// CLEAN DOWNLOAD CACHE

$clean_files = glob(IL_TEMP_PATH . DIRECTORY_SEPARATOR . 'lib_' . session_id() . DIRECTORY_SEPARATOR . 'page_*_download', GLOB_NOSORT);

if (is_array($clean_files)) {

foreach ($clean_files as $clean_file) {

if (is_file($clean_file) && is_writable($clean_file))

@unlink($clean_file);

}

}

}

}

?>

<br>