X-Git-Url: https://scripts.mit.edu/gitweb/autoinstalls/wordpress.git/blobdiff_plain/bf5c68485ef07868ad0a91168ecd0092af7661ae..refs/tags/wordpress-3.4:/wp-includes/wp-diff.php diff --git a/wp-includes/wp-diff.php b/wp-includes/wp-diff.php index ed36ee90..052bf133 100644 --- a/wp-includes/wp-diff.php +++ b/wp-includes/wp-diff.php @@ -202,15 +202,14 @@ class WP_Text_Diff_Renderer_Table extends Text_Diff_Renderer { $r = ''; // Does the aforementioned additional processing - // *_matches tell what rows are "the same" in orig and final. Those pairs will be diffed to get word changes + // *_matches tell what rows are "the same" in orig and final. Those pairs will be diffed to get word changes // match is numeric: an index in other column - // match is 'X': no match. It is a new row + // match is 'X': no match. It is a new row // *_rows are column vectors for the orig column and the final column. // row >= 0: an indix of the $orig or $final array // row < 0: a blank row for that column list($orig_matches, $final_matches, $orig_rows, $final_rows) = $this->interleave_changed_lines( $orig, $final ); - // These will hold the word changes as determined by an inline diff $orig_diffs = array(); $final_diffs = array(); @@ -231,7 +230,7 @@ class WP_Text_Diff_Renderer_Table extends Text_Diff_Renderer { $stripped_diff = strlen(strip_tags( $diff )) * 2 - $stripped_matches; $diff_ratio = $stripped_matches / $stripped_diff; if ( $diff_ratio > $this->_diff_threshold ) - continue; // Too different. Don't save diffs. + continue; // Too different. Don't save diffs. } // Un-inline the diffs by removing del or ins @@ -241,11 +240,11 @@ class WP_Text_Diff_Renderer_Table extends Text_Diff_Renderer { } foreach ( array_keys($orig_rows) as $row ) { - // Both columns have blanks. Ignore them. + // Both columns have blanks. Ignore them. if ( $orig_rows[$row] < 0 && $final_rows[$row] < 0 ) continue; - // If we have a word based diff, use it. Otherwise, use the normal line. + // If we have a word based diff, use it. Otherwise, use the normal line. if ( isset( $orig_diffs[$orig_rows[$row]] ) ) $orig_line = $orig_diffs[$orig_rows[$row]]; elseif ( isset( $orig[$orig_rows[$row]] ) ) @@ -260,9 +259,9 @@ class WP_Text_Diff_Renderer_Table extends Text_Diff_Renderer { else $final_line = ''; - if ( $orig_rows[$row] < 0 ) { // Orig is blank. This is really an added row. + if ( $orig_rows[$row] < 0 ) { // Orig is blank. This is really an added row. $r .= $this->_added( array($final_line), false ); - } elseif ( $final_rows[$row] < 0 ) { // Final is blank. This is really a deleted row. + } elseif ( $final_rows[$row] < 0 ) { // Final is blank. This is really a deleted row. $r .= $this->_deleted( array($orig_line), false ); } else { // A true changed row. $r .= '' . $this->deletedLine( $orig_line ) . $this->addedLine( $final_line ) . "\n"; @@ -288,7 +287,7 @@ class WP_Text_Diff_Renderer_Table extends Text_Diff_Renderer { */ function interleave_changed_lines( $orig, $final ) { - // Contains all pairwise string comparisons. Keys are such that this need only be a one dimensional array. + // Contains all pairwise string comparisons. Keys are such that this need only be a one dimensional array. $matches = array(); foreach ( array_keys($orig) as $o ) { foreach ( array_keys($final) as $f ) { @@ -309,7 +308,7 @@ class WP_Text_Diff_Renderer_Table extends Text_Diff_Renderer { if ( isset($orig_matches[$o]) && isset($final_matches[$f]) ) continue; - // First match for these guys. Must be best match + // First match for these guys. Must be best match if ( !isset($orig_matches[$o]) && !isset($final_matches[$f]) ) { $orig_matches[$o] = $f; $final_matches[$f] = $o; @@ -329,7 +328,6 @@ class WP_Text_Diff_Renderer_Table extends Text_Diff_Renderer { ksort($orig_matches); ksort($final_matches); - // Stores rows and blanks for each column. $orig_rows = $orig_rows_copy = array_keys($orig_matches); $final_rows = array_keys($final_matches); @@ -342,18 +340,17 @@ class WP_Text_Diff_Renderer_Table extends Text_Diff_Renderer { if ( false === $final_pos ) { // This orig is paired with a blank final. array_splice( $final_rows, $orig_pos, 0, -1 ); - } elseif ( $final_pos < $orig_pos ) { // This orig's match is up a ways. Pad final with blank rows. + } elseif ( $final_pos < $orig_pos ) { // This orig's match is up a ways. Pad final with blank rows. $diff_pos = $final_pos - $orig_pos; while ( $diff_pos < 0 ) array_splice( $final_rows, $orig_pos, 0, $diff_pos++ ); - } elseif ( $final_pos > $orig_pos ) { // This orig's match is down a ways. Pad orig with blank rows. + } elseif ( $final_pos > $orig_pos ) { // This orig's match is down a ways. Pad orig with blank rows. $diff_pos = $orig_pos - $final_pos; while ( $diff_pos < 0 ) array_splice( $orig_rows, $orig_pos, 0, $diff_pos++ ); } } - // Pad the ends with blank rows if the columns aren't the same length $diff_count = count($orig_rows) - count($final_rows); if ( $diff_count < 0 ) { @@ -427,7 +424,7 @@ class WP_Text_Diff_Renderer_Table extends Text_Diff_Renderer { // L1-norm of difference vector. $difference = array_sum( array_map( array(&$this, 'difference'), $chars1, $chars2 ) ); - // $string1 has zero length? Odd. Give huge penalty by not dividing. + // $string1 has zero length? Odd. Give huge penalty by not dividing. if ( !$string1 ) return $difference; @@ -473,5 +470,3 @@ class WP_Text_Diff_Renderer_inline extends Text_Diff_Renderer_inline { } } - -?>