Fixes #1897

extensions/gii/CodeFile.php

@@ -9,9 +9,9 @@ namespace yii\gii;
 
 use Yii;
 use yii\base\Object;
+use yii\gii\components\DiffRendererHtmlInline;
 use yii\gii\components\TextDiff;
 use yii\helpers\Html;
-use yii\helpers\StringHelper;
 
 /**
  * CodeFile represents a code file to be generated.
@@ -147,9 +147,29 @@ class CodeFile extends Object
 		if (in_array($type, ['jpg', 'gif', 'png', 'exe'])) {
 			return false;
 		} elseif ($this->operation === self::OP_OVERWRITE) {
-			return StringHelper::diff(file($this->path), $this->content);
+			return $this->renderDiff(file($this->path), $this->content);
 		} else {
 			return '';
 		}
 	}
+
+	private function renderDiff($lines1, $lines2)
+	{
+		if (!is_array($lines1)) {
+			$lines1 = explode("\n", $lines1);
+		}
+		if (!is_array($lines2)) {
+			$lines2 = explode("\n", $lines2);
+		}
+		foreach ($lines1 as $i => $line) {
+			$lines1[$i] = rtrim($line, "\r\n");
+		}
+		foreach ($lines2 as $i => $line) {
+			$lines2[$i] = rtrim($line, "\r\n");
+		}
+
+		$renderer = new DiffRendererHtmlInline();
+		$diff = new \Diff($lines1, $lines2);
+		return $diff->render($renderer);
+	}
 }

extensions/gii/assets/main.css

@@ -148,10 +148,6 @@ body {
 	font-weight: normal;
 	color: #999;
 	width: 5px;
-	-webkit-user-select: none;
-	-moz-user-select: none;
-	-ms-user-select: none;
-	user-select: none;
 }
 
 .Differences td {
@@ -214,6 +210,10 @@ body {
 	background: #e99;
 }
 
+.DifferencesInline th[data-line-number]:before {
+	content: attr(data-line-number);
+}
+
 /* additional styles for typeahead.js-bootstrap.css */
 .twitter-typeahead {
     display: block !important;

extensions/gii/components/DiffRendererHtmlInline.php

+<?php
+namespace yii\gii\components;
+
+class DiffRendererHtmlInline extends \Diff_Renderer_Html_Array
+{
+	/**
+	 * Render a and return diff with changes between the two sequences
+	 * displayed inline (under each other)
+	 *
+	 * @return string The generated inline diff.
+	 */
+	public function render()
+	{
+		$changes = parent::render();
+		$html = '';
+		if(empty($changes)) {
+			return $html;
+		}
+
+		$html .= '<table class="Differences DifferencesInline">';
+		$html .= '<thead>';
+		$html .= '<tr>';
+		$html .= '<th>Old</th>';
+		$html .= '<th>New</th>';
+		$html .= '<th>Differences</th>';
+		$html .= '</tr>';
+		$html .= '</thead>';
+		foreach($changes as $i => $blocks) {
+			// If this is a separate block, we're condensing code so output ...,
+			// indicating a significant portion of the code has been collapsed as
+			// it is the same
+			if($i > 0) {
+				$html .= '<tbody class="Skipped">';
+				$html .= '<th data-line-number="&hellip;"></th>';
+				$html .= '<th data-line-number="&hellip;"></th>';
+				$html .= '<td>&nbsp;</td>';
+				$html .= '</tbody>';
+			}
+
+			foreach($blocks as $change) {
+				$html .= '<tbody class="Change'.ucfirst($change['tag']).'">';
+				// Equal changes should be shown on both sides of the diff
+				if($change['tag'] == 'equal') {
+					foreach($change['base']['lines'] as $no => $line) {
+						$fromLine = $change['base']['offset'] + $no + 1;
+						$toLine = $change['changed']['offset'] + $no + 1;
+						$html .= '<tr>';
+						$html .= '<th data-line-number="'.$fromLine.'"></th>';
+						$html .= '<th data-line-number="'.$toLine.'"></th>';
+						$html .= '<td class="Left">'.$line.'</td>';
+						$html .= '</tr>';
+					}
+				}
+				// Added lines only on the right side
+				else if($change['tag'] == 'insert') {
+					foreach($change['changed']['lines'] as $no => $line) {
+						$toLine = $change['changed']['offset'] + $no + 1;
+						$html .= '<tr>';
+						$html .= '<th data-line-number="&nbsp;"></th>';
+						$html .= '<th data-line-number="'.$toLine.'"></th>';
+						$html .= '<td class="Right"><ins>'.$line.'</ins>&nbsp;</td>';
+						$html .= '</tr>';
+					}
+				}
+				// Show deleted lines only on the left side
+				else if($change['tag'] == 'delete') {
+					foreach($change['base']['lines'] as $no => $line) {
+						$fromLine = $change['base']['offset'] + $no + 1;
+						$html .= '<tr>';
+						$html .= '<th data-line-number="'.$fromLine.'"></th>';
+						$html .= '<th data-line-number="&nbsp;"></th>';
+						$html .= '<td class="Left"><del>'.$line.'</del>&nbsp;</td>';
+						$html .= '</tr>';
+					}
+				}
+				// Show modified lines on both sides
+				else if($change['tag'] == 'replace') {
+					foreach($change['base']['lines'] as $no => $line) {
+						$fromLine = $change['base']['offset'] + $no + 1;
+						$html .= '<tr>';
+						$html .= '<th data-line-number="'.$fromLine.'"></th>';
+						$html .= '<th data-line-number="&nbsp;"></th>';
+						$html .= '<td class="Left"><span>'.$line.'</span></td>';
+						$html .= '</tr>';
+					}
+
+					foreach($change['changed']['lines'] as $no => $line) {
+						$toLine = $change['changed']['offset'] + $no + 1;
+						$html .= '<tr>';
+						$html .= '<th data-line-number="'.$toLine.'"></th>';
+						$html .= '<th data-line-number="&nbsp;"></th>';
+						$html .= '<td class="Right"><span>'.$line.'</span></td>';
+						$html .= '</tr>';
+					}
+				}
+				$html .= '</tbody>';
+			}
+		}
+		$html .= '</table>';
+		return $html;
+	}
+}
\ No newline at end of file

extensions/gii/composer.json

@@ -19,7 +19,8 @@
 	],
 	"require": {
 		"yiisoft/yii2": "*",
-		"yiisoft/yii2-bootstrap": "*"
+		"yiisoft/yii2-bootstrap": "*",
+		"phpspec/php-diff": ">=1.0.2"
 	},
 	"autoload": {
 		"psr-4": { "yii\\gii\\": "" }

framework/composer.json

@@ -54,7 +54,6 @@
 		"lib-pcre": "*",
 		"yiisoft/yii2-composer": "*",
 		"yiisoft/jquery": "~2.0 | ~1.10",
-		"phpspec/php-diff": ">=1.0.2",
 		"ezyang/htmlpurifier": "4.6.*",
 		"michelf/php-markdown": "1.3.*"
 	},

framework/helpers/BaseStringHelper.php

@@ -88,53 +88,4 @@ class BaseStringHelper
 			return '';
 		}
 	}
-
-	/**
-	 * Compares two strings or string arrays, and return their differences.
-	 * This is a wrapper of the [phpspec/php-diff](https://packagist.org/packages/phpspec/php-diff) package.
-	 * @param string|array $lines1 the first string or string array to be compared. If it is a string,
-	 * it will be converted into a string array by breaking at newlines.
-	 * @param string|array $lines2 the second string or string array to be compared. If it is a string,
-	 * it will be converted into a string array by breaking at newlines.
-	 * @param string $format the output format. It must be 'inline', 'unified', 'context', 'side-by-side', or 'array'.
-	 * @return string|array the comparison result. An array is returned if `$format` is 'array'. For all other
-	 * formats, a string is returned.
-	 * @throws InvalidParamException if the format is invalid.
-	 */
-	public static function diff($lines1, $lines2, $format = 'inline')
-	{
-		if (!is_array($lines1)) {
-			$lines1 = explode("\n", $lines1);
-		}
-		if (!is_array($lines2)) {
-			$lines2 = explode("\n", $lines2);
-		}
-		foreach ($lines1 as $i => $line) {
-			$lines1[$i] = rtrim($line, "\r\n");
-		}
-		foreach ($lines2 as $i => $line) {
-			$lines2[$i] = rtrim($line, "\r\n");
-		}
-		switch ($format) {
-			case 'inline':
-				$renderer = new \Diff_Renderer_Html_Inline();
-				break;
-			case 'array':
-				$renderer = new \Diff_Renderer_Html_Array();
-				break;
-			case 'side-by-side':
-				$renderer = new \Diff_Renderer_Html_SideBySide();
-				break;
-			case 'context':
-				$renderer = new \Diff_Renderer_Text_Context();
-				break;
-			case 'unified':
-				$renderer = new \Diff_Renderer_Text_Unified();
-				break;
-			default:
-				throw new InvalidParamException("Output format must be 'inline', 'side-by-side', 'array', 'context' or 'unified'.");
-		}
-		$diff = new \Diff($lines1, $lines2);
-		return $diff->render($renderer);
-	}
 }