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- #18836: Cleanup teaser generation code, and refine handling of PHP code teasers.

4.6.x
Steven Wittens 2005-06-01 03:34:00 +00:00
parent a5ae600d23
commit db938104aa
1 changed files with 21 additions and 49 deletions
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70
modules/node.module
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@ -153,23 +153,28 @@ function node_mark($nid, $timestamp) {
}
/**
* Automatically generate a teaser for the given body text.
* Automatically generate a teaser for a node body in a given format.
*/
function node_teaser($body) {
function node_teaser($body, $format = NULL) {
$size = variable_get('teaser_length', 600);
// find where the delimiter is in the body
$delimiter = strpos($body, '<!--break-->');
// If the size is zero, and there is no delimiter, we return the entire body.
// If the size is zero, and there is no delimiter, the entire body is the teaser.
if ($size == 0 && $delimiter == 0) {
return $body;
}
// If the body contains PHP code, do not split it up to prevent parse errors.
if (strpos($body, '<?') != false) {
return $body;
// We check for the presence of the PHP evaluator filter in the current
// format. If the body contains PHP code, we do not split it up to prevent
// parse errors.
if (isset($format)) {
$filters = filter_list_format($format);
if (isset($filters['filter/1']) && strpos($body, '<?') != false) {
return $body;
}
}
// If a valid delimiter has been specified, use it to chop of the teaser.
@ -177,56 +182,23 @@ function node_teaser($body) {
return substr($body, 0, $delimiter);
}
// If we have a short body, return the entire body.
// If we have a short body, the entire body is the teaser.
if (strlen($body) < $size) {
return $body;
}
// In some cases, no delimiter has been specified (e.g. when posting using
// the Blogger API). In this case, we try to split at paragraph boundaries.
if ($length = strpos($body, '</p>', $size)) {
return substr($body, 0, $length + 4);
}
if ($length = strpos($body, '<br />', $size)) {
return substr($body, 0, $length);
}
if ($length = strpos($body, '<br>', $size)) {
return substr($body, 0, $length);
}
if ($length = strpos($body, "\n", $size)) {
return substr($body, 0, $length);
}
// When even the first paragraph is too long, try to split at the end of
// When even the first paragraph is too long, we try to split at the end of
// the next sentence.
if ($length = strpos($body, '. ', $size)) {
return substr($body, 0, $length + 1);
$breakpoints = array('</p>' => 4, '<br />' => 0, '<br>' => 0, "\n" => 0, '. ' => 1, '! ' => 1, '? ' => 1, '。' => 1, '؟ ' => 1);
foreach ($breakpoints as $point => $charnum) {
if ($length = strpos($body, $point, $size)) {
return substr($body, 0, $length + $charnum);
}
}
if ($length = strpos($body, '! ', $size)) {
return substr($body, 0, $length + 1);
}
if ($length = strpos($body, '? ', $size)) {
return substr($body, 0, $length + 1);
}
if ($length = strpos($body, '。', $size)) {
return substr($body, 0, $length + 1);
}
if ($length = strpos($body, '、', $size)) {
return substr($body, 0, $length + 1);
}
if ($length = strpos($body, '؟ ', $size)) {
return substr($body, 0, $length + 1);
}
// If all else fails, simply truncate the string.
// If all else fails, we simply truncate the string.
return truncate_utf8($body, $size);
}
@ -1212,7 +1184,7 @@ function node_validate($node) {
// Auto-generate the teaser, but only if it hasn't been set (e.g. by a
// module-provided 'teaser' form item).
if (!isset($node->teaser)) {
$node->teaser = node_teaser($node->body);
$node->teaser = node_teaser($node->body, $node->format);
}
if (node_last_changed($node->nid) > $node->changed) {
@ -1492,7 +1464,7 @@ function node_preview($node) {
// Extract a teaser, if it hasn't been set (e.g. by a module-provided
// 'teaser' form item).
if (!isset($node->teaser)) {
$node->teaser = node_teaser($node->body);
$node->teaser = node_teaser($node->body, $node->format);
}
// Display a preview of the node: