diff --git a/automatically-paginate-posts.php b/automatically-paginate-posts.php
index bf960c8cb78aeff07e58fc9e1e14b70014309146..350587b29fac0ef53402f3928eed8f9c6f2d7c73 100644
--- a/automatically-paginate-posts.php
+++ b/automatically-paginate-posts.php
@@ -29,8 +29,12 @@ class Automatically_Paginate_Posts {
private $post_types;
private $post_types_default = array( 'post' );
+ private $num_pages;
+ private $num_pages_default = 2;
+
//Ensure option names match values in this::uninstall
private $option_name_post_types = 'autopaging_post_types';
+ private $option_name_num_pages = 'autopaging_num_pages';
private $meta_key_disable_autopaging = '_disable_autopaging';
@@ -57,6 +61,7 @@ class Automatically_Paginate_Posts {
/**
* Set post types this plugin can act on, either from Reading page or via filter
+ * Also sets default number of pages to break content over, either from Reading page or via filter
*
* @uses apply_filters, get_option
* @action init
@@ -65,6 +70,11 @@ class Automatically_Paginate_Posts {
public function action_init() {
//Post types
$this->post_types = apply_filters( 'autopaging_post_types', get_option( $this->option_name_post_types, $this->post_types_default ) );
+
+ //Number of pages to break over
+ $this->num_pages = absint( apply_filters( 'autopaging_num_pages_default', get_option( $this->option_name_num_pages, $this->num_pages_default ) ) );
+ if ( 0 == $this->num_pages )
+ $this->num_pages = 2;
}
/**
@@ -77,6 +87,7 @@ class Automatically_Paginate_Posts {
*/
public function uninstall() {
delete_option( 'autopaging_post_types' );
+ delete_option( 'autopaging_num_pages' );
}
/**
@@ -103,9 +114,11 @@ class Automatically_Paginate_Posts {
*/
public function action_admin_init() {
register_setting( 'reading', $this->option_name_post_types, array( $this, 'sanitize_supported_post_types' ) );
+ register_setting( 'reading', $this->option_name_num_pages, array( $this, 'sanitize_num_pages' ) );
add_settings_section( 'autopaging', 'Automatically Paginate Posts', '__return_false', 'reading' );
- add_settings_field( 'autopaging-post-types', __( 'Supported post types', 'autopaging' ), array( $this, 'settings_field_post_types' ), 'reading', 'autopaging' );
+ add_settings_field( 'autopaging-post-types', __( 'Supported post types:', 'autopaging' ), array( $this, 'settings_field_post_types' ), 'reading', 'autopaging' );
+ add_settings_field( 'autopaging-num-pages', __( 'Number of pages to split content into:', 'autopaging' ), array( $this, 'settings_field_num_pages' ), 'reading', 'autopaging' );
}
/**
@@ -164,6 +177,36 @@ class Automatically_Paginate_Posts {
return $post_types_sanitized;
}
+ /**
+ * Render dropdown for choosing number of pages to break content over
+ *
+ * @uses get_option, apply_filters, esc_attr, selected
+ * @return string
+ */
+ public function settings_field_num_pages() {
+ $num_pages = get_option( $this->option_name_num_pages, $this->num_pages_default );
+ $max_pages = apply_filters( 'autopaging_max_num_pages', 10 );
+
+ ?>
+ <select name="<?php echo esc_attr( $this->option_name_num_pages ); ?>">
+ <?php for( $i = 2; $i <= $max_pages; $i++ ) : ?>
+ <option value="<?php echo intval( $i ); ?>"<?php selected( (int) $i, (int) $num_pages ); ?>><?php echo intval( $i ); ?></option>
+ <?php endfor; ?>
+ </select>
+ <?php
+ }
+
+ /**
+ * Sanitize number of pages input
+ *
+ * @param int $num_pages
+ * @uses apply_filters
+ * @return int
+ */
+ public function sanitize_num_pages( $num_pages ) {
+ return max( 2, min( intval( $num_pages ), apply_filters( 'autopaging_max_num_pages', 10 ) ) );
+ }
+
/**
* Add autopaging metabox
*
@@ -222,7 +265,7 @@ class Automatically_Paginate_Posts {
* Only applied if the post type matches specified options and post doesn't already contain the Quicktag.
*
* @param array $posts
- * @uses is_admin, get_post_meta
+ * @uses is_admin, get_post_meta, absint, apply_filters
* @filter the_posts
* @return array
*/
@@ -230,6 +273,12 @@ class Automatically_Paginate_Posts {
if ( ! is_admin() ) {
foreach( $posts as $the_post ) {
if ( in_array( $the_post->post_type, $this->post_types ) && ! preg_match( '#<!--nextpage-->#i', $the_post->post_content ) && ! (bool) get_post_meta( $the_post->ID, $this->meta_key_disable_autopaging, true ) ) {
+ //In-time filtering of number of pages to break over, based on post data. If value is less than 2, nothing should be done.
+ $num_pages = absint( apply_filters( 'autopaging_num_pages', absint( $this->num_pages ), $the_post ) );
+
+ if ( $num_pages < 2 )
+ continue;
+
//Start with post content, but alias to protect the raw content.
$content = $the_post->post_content;
@@ -245,20 +294,49 @@ class Automatically_Paginate_Posts {
//Explode content at double line breaks
$content = explode( "\r\n\r\n", $content );
- //Determine where to insert Quicktag and insert
- $insert_before = ceil( count( $content ) / 2 );
+ //Count number of paragraphs content was exploded to
+ $count = count( $content );
- $content[ $insert_before ] = '<!--nextpage-->' . $content[ $insert_before ];
+ //Determine when to insert Quicktag
+ $insert_every = $count / $num_pages;
+ $insert_every_rounded = round( $insert_every );
+
+ //If number of pages is greater than number of paragraphs, put each paragraph on its own page
+ if ( $num_pages > $count )
+ $insert_every_rounded = 1;
+
+ //Set initial counter position.
+ $i = $count - 1 == $num_pages ? 2 : 1;
+
+ //Loop through content pieces and append Quicktag as is appropriate
+ foreach( $content as $key => $value ) {
+ if ( $key + 1 == $count )
+ break;
+
+ if ( ( $key + 1 ) == ( $i * $insert_every_rounded ) ) {
+ $content[ $key ] = $content[ $key ] . '<!--nextpage-->';
+ $i++;
+ }
+ }
//Reunite content
$content = implode( "\r\n\r\n", $content );
//And, overwrite the original content
$the_post->post_content = $content;
+
+ //Clean up
+ unset( $count );
+ unset( $insert_every );
+ unset( $insert_every_rounded );
+ unset( $key );
+ unset( $value );
}
//Lastly, clean up.
+ unset( $num_pages );
unset( $content );
+ unset( $count );
}
}
}