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-rw-r--r--inc/DifferenceEngine.php81
1 files changed, 57 insertions, 24 deletions
diff --git a/inc/DifferenceEngine.php b/inc/DifferenceEngine.php
index 6e1d07382..1b68cf6d3 100644
--- a/inc/DifferenceEngine.php
+++ b/inc/DifferenceEngine.php
@@ -29,7 +29,7 @@ class _DiffOp {
class _DiffOp_Copy extends _DiffOp {
var $type = 'copy';
-
+
function __construct($orig, $closing = false) {
if (!is_array($closing))
$closing = $orig;
@@ -44,7 +44,7 @@ class _DiffOp_Copy extends _DiffOp {
class _DiffOp_Delete extends _DiffOp {
var $type = 'delete';
-
+
function __construct($lines) {
$this->orig = $lines;
$this->closing = false;
@@ -57,7 +57,7 @@ class _DiffOp_Delete extends _DiffOp {
class _DiffOp_Add extends _DiffOp {
var $type = 'add';
-
+
function __construct($lines) {
$this->closing = $lines;
$this->orig = false;
@@ -70,7 +70,7 @@ class _DiffOp_Add extends _DiffOp {
class _DiffOp_Change extends _DiffOp {
var $type = 'change';
-
+
function __construct($orig, $closing) {
$this->orig = $orig;
$this->closing = $closing;
@@ -818,6 +818,39 @@ class DiffFormatter {
}
}
+/**
+ * Utilityclass for styling HTML formatted diffs
+ *
+ * Depends on global var $DIFF_INLINESTYLES, if true some minimal predefined
+ * inline styles are used. Useful for HTML mails and RSS feeds
+ *
+ * @author Andreas Gohr <andi@splitbrain.org>
+ */
+class HTMLDiff {
+ /**
+ * Holds the style names and basic CSS
+ */
+ static public $styles = array(
+ 'diff-addedline' => 'background-color: #ddffdd;',
+ 'diff-deletedline' => 'background-color: #ffdddd;',
+ 'diff-context' => 'background-color: #f5f5f5;',
+ 'diff-mark' => 'color: #ff0000;',
+ );
+
+ /**
+ * Return a class or style parameter
+ */
+ static function css($classname){
+ global $DIFF_INLINESTYLES;
+
+ if($DIFF_INLINESTYLES){
+ if(!isset(self::$styles[$classname])) return '';
+ return 'style="'.self::$styles[$classname].'"';
+ }else{
+ return 'class="'.$classname.'"';
+ }
+ }
+}
/**
* Additions by Axel Boldt follow, partly taken from diff.php, phpwiki-1.3.3
@@ -838,11 +871,11 @@ class _HWLDF_WordAccumulator {
function _flushGroup($new_tag) {
if ($this->_group !== '') {
if ($this->_tag == 'mark')
- $this->_line .= '<strong>'.$this->_group.'</strong>';
+ $this->_line .= '<strong '.HTMLDiff::css('diff-mark').'>'.$this->_group.'</strong>';
elseif ($this->_tag == 'add')
- $this->_line .= '<span class="diff-addedline">'.$this->_group.'</span>';
+ $this->_line .= '<span '.HTMLDiff::css('diff-addedline').'>'.$this->_group.'</span>';
elseif ($this->_tag == 'del')
- $this->_line .= '<span class="diff-deletedline"><del>'.$this->_group.'</del></span>';
+ $this->_line .= '<span '.HTMLDiff::css('diff-deletedline').'><del>'.$this->_group.'</del></span>';
else
$this->_line .= $this->_group;
}
@@ -924,7 +957,7 @@ class WordLevelDiff extends MappedDiff {
}
class InlineWordLevelDiff extends MappedDiff {
-
+
function __construct($orig_lines, $closing_lines) {
list ($orig_words, $orig_stripped) = $this->_split($orig_lines);
list ($closing_words, $closing_stripped) = $this->_split($closing_lines);
@@ -1006,8 +1039,8 @@ class TableDiffFormatter extends DiffFormatter {
// Preserve whitespaces by converting some to non-breaking spaces.
// Do not convert all of them to allow word-wrap.
$val = parent::format($diff);
- $val = str_replace(' ','&nbsp; ', $val);
- $val = preg_replace('/ (?=<)|(?<=[ >]) /', '&nbsp;', $val);
+ $val = str_replace(' ','&#160; ', $val);
+ $val = preg_replace('/ (?=<)|(?<=[ >]) /', '&#160;', $val);
return $val;
}
@@ -1020,8 +1053,8 @@ class TableDiffFormatter extends DiffFormatter {
global $lang;
$l1 = $lang['line'].' '.$xbeg;
$l2 = $lang['line'].' '.$ybeg;
- $r = '<tr><td class="diff-blockheader" colspan="2">'.$l1.":</td>\n".
- '<td class="diff-blockheader" colspan="2">'.$l2.":</td>\n".
+ $r = '<tr><td '.HTMLDiff::css('diff-blockheader').' colspan="2">'.$l1.":</td>\n".
+ '<td '.HTMLDiff::css('diff-blockheader').' colspan="2">'.$l2.":</td>\n".
"</tr>\n";
return $r;
}
@@ -1037,19 +1070,19 @@ class TableDiffFormatter extends DiffFormatter {
}
function addedLine($line) {
- return '<td>+</td><td class="diff-addedline">' . $line.'</td>';
+ return '<td>+</td><td '.HTMLDiff::css('diff-addedline').'>' . $line.'</td>';
}
function deletedLine($line) {
- return '<td>-</td><td class="diff-deletedline">' . $line.'</td>';
+ return '<td>-</td><td '.HTMLDiff::css('diff-deletedline').'>' . $line.'</td>';
}
function emptyLine() {
- return '<td colspan="2">&nbsp;</td>';
+ return '<td colspan="2">&#160;</td>';
}
function contextLine($line) {
- return '<td> </td><td class="diff-context">'.$line.'</td>';
+ return '<td> </td><td '.HTMLDiff::css('diff-context').'>'.$line.'</td>';
}
function _added($lines) {
@@ -1099,8 +1132,8 @@ class InlineDiffFormatter extends DiffFormatter {
// Preserve whitespaces by converting some to non-breaking spaces.
// Do not convert all of them to allow word-wrap.
$val = parent::format($diff);
- $val = str_replace(' ','&nbsp; ', $val);
- $val = preg_replace('/ (?=<)|(?<=[ >]) /', '&nbsp;', $val);
+ $val = str_replace(' ','&#160; ', $val);
+ $val = preg_replace('/ (?=<)|(?<=[ >]) /', '&#160;', $val);
return $val;
}
@@ -1115,9 +1148,9 @@ class InlineDiffFormatter extends DiffFormatter {
$xbeg .= "," . $xlen;
if ($ylen != 1)
$ybeg .= "," . $ylen;
- $r = '<tr><td colspan="'.$this->colspan.'" class="diff-blockheader">@@ '.$lang['line']." -$xbeg +$ybeg @@";
- $r .= ' <span class="diff-deletedline"><del>'.$lang['deleted'].'</del></span>';
- $r .= ' <span class="diff-addedline">'.$lang['created'].'</span>';
+ $r = '<tr><td colspan="'.$this->colspan.'" '.HTMLDiff::css('diff-blockheader').'>@@ '.$lang['line']." -$xbeg +$ybeg @@";
+ $r .= ' <span '.HTMLDiff::css('diff-deletedline').'><del>'.$lang['deleted'].'</del></span>';
+ $r .= ' <span '.HTMLDiff::css('diff-addedline').'>'.$lang['created'].'</span>';
$r .= "</td></tr>\n";
return $r;
}
@@ -1134,19 +1167,19 @@ class InlineDiffFormatter extends DiffFormatter {
function _added($lines) {
foreach ($lines as $line) {
- print('<tr><td colspan="'.$this->colspan.'" class="diff-addedline">'. $line . "</td></tr>\n");
+ print('<tr><td colspan="'.$this->colspan.'" '.HTMLDiff::css('diff-addedline').'>'. $line . "</td></tr>\n");
}
}
function _deleted($lines) {
foreach ($lines as $line) {
- print('<tr><td colspan="'.$this->colspan.'" class="diff-deletedline"><del>' . $line . "</del></td></tr>\n");
+ print('<tr><td colspan="'.$this->colspan.'" '.HTMLDiff::css('diff-deletedline').'><del>' . $line . "</del></td></tr>\n");
}
}
function _context($lines) {
foreach ($lines as $line) {
- print('<tr><td colspan="'.$this->colspan.'" class="diff-context">'.$line."</td></tr>\n");
+ print('<tr><td colspan="'.$this->colspan.'" '.HTMLDiff::css('diff-context').'>'.$line."</td></tr>\n");
}
}
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