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<?php
/**
* Module Name: WP.me Shortlinks
* Module Description: Enable WP.me-powered shortlinks for all posts and pages.
* Sort Order: 8
* First Introduced: 1.1
* Requires Connection: Yes
* Auto Activate: Yes
* Module Tags: Social
* Additional Search Queries: shortlinks, wp.me
*/
add_filter( 'pre_get_shortlink', 'wpme_get_shortlink_handler', 1, 4 );
if ( !function_exists( 'wpme_dec2sixtwo' ) ) {
function wpme_dec2sixtwo( $num ) {
$index = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
$out = "";
if ( $num < 0 ) {
$out = '-';
$num = abs( $num );
}
for ( $t = floor( log10( $num ) / log10( 62 ) ); $t >= 0; $t-- ) {
$a = floor( $num / pow( 62, $t ) );
$out = $out . substr( $index, $a, 1 );
$num = $num - ( $a * pow( 62, $t ) );
}
return $out;
}
}
function wpme_get_shortlink( $id = 0, $context = 'post', $allow_slugs = true ) {
global $wp_query;
$blog_id = Jetpack_Options::get_option( 'id' );
if ( 'query' == $context ) {
if ( is_singular() ) {
$id = $wp_query->get_queried_object_id();
$context = 'post';
} elseif ( is_front_page() ) {
$context = 'blog';
} else {
return '';
}
}
if ( 'blog' == $context ) {
if ( empty( $id ) )
$id = $blog_id;
$wpme_url = 'http://wp.me/' . wpme_dec2sixtwo( $id );
return set_url_scheme( $wpme_url );
}
$post = get_post( $id );
if ( empty( $post ) )
return '';
$post_id = $post->ID;
$type = '';
if ( $allow_slugs && 'publish' == $post->post_status && 'post' == $post->post_type && strlen( $post->post_name ) <= 8 && false === strpos( $post->post_name, '%' )
&& false === strpos( $post->post_name, '-' ) ) {
$id = $post->post_name;
$type = 's';
} else {
$id = wpme_dec2sixtwo( $post_id );
if ( 'page' == $post->post_type )
$type = 'P';
elseif ( 'post' == $post->post_type || post_type_supports( $post->post_type, 'shortlinks' ) )
$type= 'p';
elseif ( 'attachment' == $post->post_type )
$type = 'a';
}
if ( empty( $type ) )
return '';
$url = 'http://wp.me/' . $type . wpme_dec2sixtwo( $blog_id ) . '-' . $id;
return set_url_scheme( $url );
}
function wpme_get_shortlink_handler( $shortlink, $id, $context, $allow_slugs ) {
return wpme_get_shortlink( $id, $context, $allow_slugs );
}
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