/**
* Find next and previous articles relative to a provided threshold level
*
* @param int $id The "pivot" article's id; use zero (0) to indicate $thisarticle
* @param scalar $threshold The value to compare against if $id != 0
* @param string $s string Optional section restriction if $id != 0
* @return array An array populated with article data from the next and previous article
*/
function getNextPrev($id = 0, $threshold = null, $s = '')
{
if ($id !== 0) {
// Pivot is specific article by ID: In lack of further information, revert to default sort order 'Posted desc'
$atts = filterAtts(array('sortby' => 'Posted', 'sortdir' => 'desc'));
} else {
// Pivot is $thisarticle: Use article attributes to find its neighbours
assert_article();
global $thisarticle;
if (!is_array($thisarticle)) {
return array();
}
$atts = filterAtts();
$m = preg_split('/\\s+/', $atts['sort']);
if (empty($m[0]) || count($m) > 2 || preg_match('/[),]/', $m[0])) {
// Either no explicit sort order or a complex clause, e.g. 'foo asc, bar desc' or 'FUNC(foo,bar) asc'
// Fall back to chronologically descending order
$atts['sortby'] = 'Posted';
$atts['sortdir'] = 'desc';
} else {
// sort is like 'foo asc'
$atts['sortby'] = $m[0];
$atts['sortdir'] = isset($m[1]) && strtolower($m[1]) == 'desc' ? 'desc' : 'asc';
}
// atts w/ special treatment
switch ($atts['sortby']) {
case 'Posted':
$threshold = 'from_unixtime(' . doSlash($thisarticle['posted']) . ')';
$threshold_type = 'cooked';
break;
case 'Expires':
$threshold = 'from_unixtime(' . doSlash($thisarticle['expires']) . ')';
$threshold_type = 'cooked';
break;
case 'LastMod':
$threshold = 'from_unixtime(' . doSlash($thisarticle['modified']) . ')';
$threshold_type = 'cooked';
break;
default:
// retrieve current threshold value per sort column from $thisarticle
$acm = array_flip(article_column_map());
$key = $acm[$atts['sortby']];
$threshold = $thisarticle[$key];
$threshold_type = 'raw';
break;
}
$s = $thisarticle['section'];
}
$thenext = getNeighbour($threshold, $s, '>', $atts, $threshold_type);
$out['next_id'] = $thenext ? $thenext['ID'] : '';
$out['next_title'] = $thenext ? $thenext['Title'] : '';
$out['next_utitle'] = $thenext ? $thenext['url_title'] : '';
$out['next_posted'] = $thenext ? $thenext['uposted'] : '';
$theprev = getNeighbour($threshold, $s, '<', $atts, $threshold_type);
$out['prev_id'] = $theprev ? $theprev['ID'] : '';
$out['prev_title'] = $theprev ? $theprev['Title'] : '';
$out['prev_utitle'] = $theprev ? $theprev['url_title'] : '';
$out['prev_posted'] = $theprev ? $theprev['uposted'] : '';
return $out;
}
function doArticle($atts, $thing = null)
{
global $pretext, $prefs, $thisarticle;
extract($prefs);
extract($pretext);
extract(gpsa(array('parentid', 'preview')));
$theAtts = lAtts(array('allowoverride' => '1', 'form' => 'default', 'status' => STATUS_LIVE, 'pgonly' => 0), $atts, 0);
extract($theAtts);
// Save *all* atts to get hold of the current article filter criteria.
filterAtts($atts);
// No output required.
if ($pgonly) {
return '';
}
// If a form is specified, $thing is for doArticles() - hence ignore
// $thing here.
if (!empty($atts['form'])) {
$thing = '';
}
if ($status) {
$status = in_array(strtolower($status), array('sticky', STATUS_STICKY)) ? STATUS_STICKY : STATUS_LIVE;
}
if (empty($thisarticle) or $thisarticle['thisid'] != $id) {
$id = assert_int($id);
$thisarticle = null;
$q_status = $status ? "AND Status = " . intval($status) : "AND Status IN (" . STATUS_LIVE . "," . STATUS_STICKY . ")";
$rs = safe_row("*, UNIX_TIMESTAMP(Posted) AS uPosted, UNIX_TIMESTAMP(Expires) AS uExpires, UNIX_TIMESTAMP(LastMod) AS uLastMod", 'textpattern', "ID = {$id} {$q_status} LIMIT 1");
if ($rs) {
extract($rs);
populateArticleData($rs);
}
}
if (!empty($thisarticle) and ($thisarticle['status'] == $status or gps('txpreview'))) {
extract($thisarticle);
$thisarticle['is_first'] = 1;
$thisarticle['is_last'] = 1;
if ($allowoverride and $override_form) {
$article = parse_form($override_form);
} else {
$article = $thing ? parse($thing) : parse_form($form);
}
if ($use_comments and $comments_auto_append) {
$article .= parse_form('comments_display');
}
unset($GLOBALS['thisarticle']);
return $article;
}
}
function doArticle($atts, $thing = NULL)
{
global $pretext, $prefs, $thisarticle;
extract($prefs);
extract($pretext);
extract(gpsa(array('parentid', 'preview')));
$theAtts = lAtts(array('allowoverride' => '1', 'form' => 'default', 'status' => '4', 'pgonly' => 0), $atts, 0);
extract($theAtts);
filterAtts($atts);
// save *all* atts to get hold of the current article filter criteria
if ($pgonly) {
return '';
}
// no output required
// if a form is specified, $thing is for doArticles() - hence ignore $thing here.
if (!empty($atts['form'])) {
$thing = '';
}
if ($status) {
$status = in_array(strtolower($status), array('sticky', '5')) ? 5 : 4;
}
if (empty($thisarticle) or $thisarticle['thisid'] != $id) {
$id = assert_int($id);
$thisarticle = NULL;
$q_status = $status ? 'and Status = ' . intval($status) : 'and Status in (4,5)';
$rs = safe_row("*, unix_timestamp(Posted) as uPosted, unix_timestamp(Expires) as uExpires, unix_timestamp(LastMod) as uLastMod", "textpattern", 'ID = ' . $id . " {$q_status} limit 1");
if ($rs) {
extract($rs);
populateArticleData($rs);
}
}
if (!empty($thisarticle) and ($thisarticle['status'] == $status or gps('txpreview'))) {
extract($thisarticle);
$thisarticle['is_first'] = 1;
$thisarticle['is_last'] = 1;
if ($allowoverride and $override_form) {
$article = parse_form($override_form);
} else {
$article = $thing ? parse($thing) : parse_form($form);
}
if ($use_comments and $comments_auto_append) {
$article .= parse_form('comments_display');
}
unset($GLOBALS['thisarticle']);
return $article;
}
}
/**
* Find next and previous articles relative to a provided threshold level.
*
* @param int $id The "pivot" article's id; use zero (0) to indicate $thisarticle
* @param scalar $threshold The value to compare against if $id != 0
* @param string $s Optional section restriction if $id != 0
* @return array An array populated with article data
*/
function getNextPrev($id = 0, $threshold = null, $s = '')
{
if ($id !== 0) {
// Pivot is specific article by ID: In lack of further information,
// revert to default sort order 'Posted desc'.
$atts = filterAtts(array('sortby' => "Posted", 'sortdir' => "DESC"));
} else {
// Pivot is $thisarticle: Use article attributes to find its neighbours.
assert_article();
global $thisarticle;
if (!is_array($thisarticle)) {
return array();
}
$atts = filterAtts();
$m = preg_split('/\\s+/', $atts['sort']);
// If in doubt, fall back to chronologically descending order.
if (empty($m[0]) || count($m) > 2 || !preg_match('/^(?:[0-9a-zA-Z$_\\x{0080}-\\x{FFFF}]+|`[\\x{0001}-\\x{FFFF}]+`)$/u', $m[0])) {
$atts['sortby'] = "Posted";
$atts['sortdir'] = "DESC";
} else {
// Sort is like 'foo asc'.
$atts['sortby'] = $m[0];
$atts['sortdir'] = isset($m[1]) && strtolower($m[1]) == 'desc' ? "DESC" : "ASC";
}
// Attributes with special treatment.
switch ($atts['sortby']) {
case 'Posted':
$threshold = "FROM_UNIXTIME(" . doSlash($thisarticle['posted']) . ")";
$threshold_type = 'cooked';
break;
case 'Expires':
$threshold = "FROM_UNIXTIME(" . doSlash($thisarticle['expires']) . ")";
$threshold_type = 'cooked';
break;
case 'LastMod':
$threshold = "FROM_UNIXTIME(" . doSlash($thisarticle['modified']) . ")";
$threshold_type = 'cooked';
break;
default:
// Retrieve current threshold value per sort column from $thisarticle.
$acm = array_flip(article_column_map());
$key = $acm[$atts['sortby']];
$threshold = $thisarticle[$key];
$threshold_type = 'raw';
break;
}
$s = $thisarticle['section'];
}
$out['next'] = getNeighbour($threshold, $s, '>', $atts, $threshold_type);
$out['prev'] = getNeighbour($threshold, $s, '<', $atts, $threshold_type);
return $out;
}
function processTag($matches)
{
list($all, $tag, $atts, $content) = $matches;
$a = splat($atts);
# dump($tag); dump($content); dump($a);
$phr = array('em' => '_', 'i' => '__', 'b' => '**', 'strong' => '*', 'cite' => '??', 'del' => '-', 'ins' => '+', 'sup' => '^', 'sub' => '~', 'span' => '%');
$blk = array('p', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6');
if (isset($phr[$tag])) {
return $phr[$tag] . sci($a) . $content . $phr[$tag];
} elseif ($tag == 'blockquote') {
return 'bq.' . sci($a) . ' ' . $content;
} elseif (in_array($tag, $blk)) {
return $tag . sci($a) . '. ' . $content;
} elseif ($tag == 'a') {
$t = filterAtts($a, array('href', 'title'));
$out = '"' . $content;
$out .= isset($t['title']) ? ' (' . $t['title'] . ')' : '';
$out .= '":' . $t['href'];
return $out;
} else {
return $all;
}
}
