Find the differences between two texts. Simplifies the problem by
stripping any common prefix or suffix off the texts before diffing.
| public diff_main ( string $text1, string $text2, boolean $checklines = true ) : array | ||
| $text1 | string | Old string to be diffed. |
| $text2 | string | New string to be diffed. |
| $checklines | boolean | Optional speedup flag. If present and false, then don't run a line-level diff first to identify the changed areas. Defaults to true, which does a faster, slightly less optimal diff. |
| return | array | Array of changes. |
public function actionDiff($document_history_id)
{
$model = History::findOne($document_history_id);
if (is_null($model)) {
throw new \yii\web\HttpException(404, Yii::t('burivuh', 'Record in the history does not exist'));
}
$document = Document::findOne($model->document_id);
$previous = History::find()->where(['document_id' => $model->document_id])->andWhere('created_at<:created_at', [':created_at' => $model->created_at])->orderBy('created_at DESC')->limit(1)->one();
$diffs = [];
if (!is_null($previous)) {
$dmp = new DiffMatchPatch();
$diffs = $dmp->diff_main($previous->content, $model->content, false);
}
return $this->render('diff', ['document' => $document, 'model' => $model, 'previous' => $previous, 'diffs' => $diffs]);
}
public function renderDiff($lastEdit)
{
$dmp = new DiffMatchPatch();
$diffs = $dmp->diff_main($this->content, $lastEdit->content, false);
$added = 0;
$deleted = 0;
foreach ($diffs as $diff) {
$length = mb_strlen($diff[1], 'utf-8');
if ($diff[0] == 1) {
$added += $length;
}
if ($diff[0] == -1) {
$deleted += $length;
}
}
$this->diff = $added . ':' . $deleted;
}
