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<?php |
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/** |
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* Add Embed to Posts |
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* |
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* Functions to add embed code to posts |
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* |
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* @package simple-embed-code |
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*/ |
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|
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/** |
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* Add filter to add embed code |
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* |
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* Filter to add embed to any posts |
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* |
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* @uses ce_get_embed_code Get embed code from other posts |
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* |
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* @param string $content Post content without embedded code. |
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* @return string Post content with embedded code. |
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*/ |
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function ce_filter( $content ) { |
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|
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global $post; |
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|
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// Set initial values. |
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|
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$options = get_option( 'artiss_code_embed' ); |
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$found_pos = strpos( $content, $options['opening_ident'] . $options['keyword_ident'], 0 ); |
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$prefix_len = strlen( $options['opening_ident'] . $options['keyword_ident'] ); |
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|
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// Loop around the post content looking for all requests for code embeds. |
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|
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while ( false !== $found_pos ) { |
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|
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// Get the position of the closing identifier - ignore if one is not found! |
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|
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$end_pos = strpos( $content, $options['closing_ident'], $found_pos + $prefix_len ); |
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if ( false !== $end_pos ) { |
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|
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// Extract the suffix. |
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|
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$suffix_len = $end_pos - ( $found_pos + $prefix_len ); |
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if ( 0 === $suffix_len ) { |
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$suffix = ''; |
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} else { |
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$suffix = substr( $content, $found_pos + $prefix_len, $suffix_len ); |
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} |
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$full_suffix = $suffix; |
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|
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// Check for responsive part of suffix. |
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|
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$responsive = false; |
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$max_width = false; |
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$res_pos = false; |
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if ( 1 < strlen( $suffix ) ) { |
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$res_pos = strpos( $suffix, '_RES', 1 ); |
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} |
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|
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if ( false !== $res_pos ) { |
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|
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// If responsive section found, check it's at the end of has an underscore afterwards. |
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// Otherwise it may be part of something else. |
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|
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if ( strlen( $suffix ) - 4 === $res_pos ) { |
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$responsive = true; |
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} elseif ( '_' === substr( $suffix, $res_pos + 4, 1 ) ) { |
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$responsive = true; |
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$max_width = substr( $suffix, $res_pos + 5 ); |
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if ( ! is_numeric( $max_width ) ) { |
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$max_width = ''; |
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} |
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} |
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|
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if ( $responsive ) { |
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$suffix = substr( $suffix, 0, $res_pos ); |
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} |
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} |
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|
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// Get the custom field data and replace in the post. |
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|
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$search = $options['opening_ident'] . $options['keyword_ident'] . $suffix . $options['closing_ident']; |
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|
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// Get the meta for the current post. |
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|
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$post_meta = get_post_meta( $post->ID, $options['keyword_ident'] . $suffix, false ); |
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if ( isset( $post_meta[0] ) ) { |
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$html = $post_meta[0]; |
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} else { |
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// No meta found, so look for it elsewhere. |
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$html = ce_get_embed_code( $options['keyword_ident'], $suffix ); |
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} |
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|
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// Build the string to search for. |
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|
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$search = $options['opening_ident'] . $options['keyword_ident'] . $full_suffix . $options['closing_ident']; |
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|
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// Build the string of code to replace with. |
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|
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$replace = ce_generate_code( $html, $responsive, $max_width ); |
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|
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// Now modify all references. |
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|
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$content = str_replace( $search, $replace, $content ); |
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|
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} |
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$found_pos = strpos( $content, $options['opening_ident'] . $options['keyword_ident'], $found_pos + 1 ); |
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} |
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|
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// Loop around the post content looking for HTTP addresses. |
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|
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$content = ce_quick_replace( $content, $options, 'http://' ); |
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|
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// Loop around the post content looking for HTTPS addresses. |
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$content = ce_quick_replace( $content, $options, 'https://' ); |
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return $content; |
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} |
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|
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add_filter( 'the_content', 'ce_filter' ); |
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add_filter( 'widget_content', 'ce_filter' ); |
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|
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/** |
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* Quick Replace |
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* |
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* Function to do a quick search/replace of the content |
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* |
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* @param string $content The content. |
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* @param string $options The options array. |
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* @param string $search The string to search for. |
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* @return string The updated content |
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*/ |
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function ce_quick_replace( $content = '', $options = '', $search = '' ) { |
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|
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$start_pos = strpos( $content, $options['opening_ident'] . $search, 0 ); |
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|
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$open_len = strlen( $options['opening_ident'] ); |
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$close_len = strlen( $options['closing_ident'] ); |
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|
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while ( false !== $start_pos ) { |
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$end_pos = strpos( $content, $options['closing_ident'], $start_pos + 1 ); |
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|
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if ( false !== $end_pos ) { |
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$url = substr( $content, $start_pos + $open_len, $end_pos - $start_pos - $close_len ); |
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$file = ce_get_file( $url ); |
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if ( false !== $file ) { |
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$content = str_replace( $options['opening_ident'] . $url . $options['closing_ident'], $file, $content ); |
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} else { |
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ce_report_error( __( 'File could not be fetched', 'simple-embed-code' ), 'Code Embed', false ); |
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} |
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} |
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|
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$start_pos = strpos( $content, $options['opening_ident'] . $search, 0 ); |
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|
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} |
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|
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return $content; |
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} |
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|
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/** |
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* Generate Embed Code |
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* |
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* Function to generate the embed code that will be output |
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* |
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* @param string $html The embed code (required). |
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* @param string $responsive Responsive output required? (optional). |
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* @param string $max_width Maximum width of responsive output (optional). |
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* @return string The embed code |
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*/ |
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function ce_generate_code( $html, $responsive = '', $max_width = '' ) { |
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|
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$code = ''; |
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|
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if ( false !== $max_width ) { |
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$code .= '<div style="width: ' . $max_width . 'px; max-width: 100%">'; |
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} |
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|
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if ( $responsive ) { |
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$code .= '<div class="ce-video-container">'; |
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} |
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|
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$code .= $html; |
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|
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if ( $responsive ) { |
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$code .= '</div>'; |
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} |
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|
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if ( false !== $max_width ) { |
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$code .= '</div>'; |
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} |
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|
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return $code; |
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} |
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|
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/** |
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* Get the Global Embed Code |
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* |
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* Function to look for and, if available, return the global embed code |
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* |
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* @uses ce_report_error Generate an error message |
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* |
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* @param string $ident The embed code opening identifier. |
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* @param string $suffix The embed code suffix. |
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* @return string The embed code (or error) |
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*/ |
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function ce_get_embed_code( $ident, $suffix ) { |
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|
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// Meta was not found in current post so look across meta table - find the number of distinct code results. |
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|
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$meta_name = $ident . $suffix; |
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global $wpdb; |
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$unique_records = $wpdb->get_results( $wpdb->prepare( "SELECT DISTINCT meta_value FROM $wpdb->postmeta WHERE meta_key = %s", $meta_name ) ); // @codingStandardsIgnoreLine -- requires the latest data when called, so caching is inappropriate |
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$records = $wpdb->num_rows; |
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|
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if ( 0 < $records ) { |
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|
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// Results were found. |
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|
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$meta = $wpdb->get_results( $wpdb->prepare( "SELECT meta_value, post_title, ID FROM $wpdb->postmeta, $wpdb->posts WHERE meta_key = %s AND post_id = ID", $meta_name ) ); // @codingStandardsIgnoreLine -- requires the latest data when called, so caching is inappropriate |
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$total_records = $wpdb->num_rows; |
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|
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if ( 1 === $records ) { |
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|
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// Only one unique code result returned so assume this is the global embed. |
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|
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foreach ( $meta as $meta_data ) { |
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$html = $meta_data->meta_value; |
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} |
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} else { |
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|
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// More than one unique code result returned, so output the list of posts. |
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|
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/* translators: %1$s: embed name, %2$d: number of pieces of code being stored with that name, %3$d: number of posts using that embed name */ |
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$error = sprintf( __( 'Cannot use %1$s as a global code as it is being used to store %2$d unique pieces of code in %3$d posts', 'simple-embed-code' ), $meta_name, $records, $total_records ); |
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$html = ce_report_error( $error, 'Code Embed', false ); |
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} |
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} else { |
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|
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// No meta code was found so write out an error. |
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|
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/* translators: %s: the embed name */ |
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$html = ce_report_error( sprintf( __( 'No embed code was found for %s', 'simple-embed-code' ), $meta_name ), 'Code Embed', false ); |
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|
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} |
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return $html; |
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} |
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|
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/** |
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* Fetch a file |
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* |
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* Use WordPress API to fetch a file and check results |
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* |
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* @param string $filein File name to fetch. |
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* @return string Array containing file contents or false to indicate a failure |
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*/ |
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function ce_get_file( $filein ) { |
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|
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if ( function_exists( 'vip_safe_wp_remote_get' ) ) { |
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|
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$response = vip_safe_wp_remote_get( $filein, '', 3, 3 ); |
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|
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} else { |
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|
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$response = wp_remote_get( $filein, array( 'timeout' => 3 ) ); // @codingStandardsIgnoreLine -- for non-VIP environments |
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|
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} |
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|
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if ( is_array( $response ) ) { |
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|
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return $response['body']; |
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|
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} else { |
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|
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return false; |
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|
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} |
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} |
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|
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/** |
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* Report an error |
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* |
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* Function to report an error |
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* |
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* @param string $error Error message. |
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* @param string $plugin_name The name of the plugin. |
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* @param string $echo_out True or false, depending on whether you wish to return or echo the results. |
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* @return string True or the output text |
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*/ |
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function ce_report_error( $error, $plugin_name, $echo_out = true ) { |
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|
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$output = '<p style="color: #f00; font-weight: bold;">' . $plugin_name . ': ' . $error . "</p>\n"; |
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|
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if ( $echo_out ) { |
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echo esc_html( $output ); |
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return true; |
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} else { |
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return $output; |
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} |
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} |
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|
