[DOC-WEB] [web-doc] master: Improve diff viewer. Thank you, Lucas Azevedo. Closes GH-29

[Lucas Azevedo via Nilgün Belma Bugüner]

Author: Lucas Azevedo (lhsazevedo)
Committer: Nilgün Belma Bugüner (nilgun)
Date: 2022-01-04T21:07:32+03:00

Commit: https://github.com/php/web-doc/commit/2b5f30b65435ca480ceabcf1e8601a2e595cc8b4
Raw diff: https://github.com/php/web-doc/commit/2b5f30b65435ca480ceabcf1e8601a2e595cc8b4.diff

Improve diff viewer. Thank you, Lucas Azevedo. Closes GH-29

Changed paths:
M include/lib_revcheck.inc.php


Diff:

diff --git a/include/lib_revcheck.inc.php b/include/lib_revcheck.inc.php
index bd8f36c..e5eb89b 100644
--- a/include/lib_revcheck.inc.php
+++ b/include/lib_revcheck.inc.php
@@ -253,27 +253,70 @@ function showdiff ()
$file = `git diff {$arg_h} -- {$arg_f}`;
chdir( $cwd );
$raw = htmlspecialchars( $file, ENT_XML1, 'UTF-8' );
- $trans = [ " " => " " ];
$lines = explode ( "\n" , $raw );
- echo "<div style='font:87% monospace;overflow-wrap:break-word;'>";
- foreach ( $lines as $line ) {
- $inline = strtr( $line , $trans );
- $fc = substr( $inline , 0 , 1 );
- if ( $c == 'on' ) {
- if ( $fc == "+" ) {
- echo "<div style='color:darkgreen;background-color:#e6ffec;'>";
- } elseif ( $fc == "-" ) {
- echo "<div style='color:firebrick;background-color:#ffebe9;'>";
- } elseif ( $fc == "@" ) {
- echo "<div style='color:darkblue;background-color:#ddf4ff;'>";
- } else
- echo "<div style='color:gray;line-height:1.2;'>";
- echo "$inline</div>\n";
- } else
- if ( ($fc == "+") || ($fc == "-") || ($fc == "@"))
- echo "<div style='background-color:#f0f0f0;'>$inline</div>\n";
- else
- echo "<div style='color:gray;line-height:1.2;'>$inline</div>\n";
+ echo "<div style='font: .75rem monospace; overflow-wrap:break-word; line-height: 1.8; border: 1px solid #ccc; border-radius: 4px;'>";
+
+ $codeStyles = 'flex-grow: 1; min-width: 0; white-space: pre-wrap;';
+ $lineNumberStyles = 'flex: 0 0 40px; text-align: right; user-select: none; padding: 0 8px;';
+
+ // Base gray palette
+ $addBg = 'background-color: #f0f0f0;';
+ $addAccentBg = 'background-color: #d8d8d8;';
+ $delBg = $addBg;
+ $delAccentBg = $addAccentBg;
+ $tagBg = $addBg;
+ $tagAccentBg = $addAccentBg;
+
+ // Override palette for colored diff
+ if ($c == 'on') {
+ $addBg = 'background-color: #e6ffec;';
+ $addAccentBg = 'background-color: #ccffd8;';
+ $delBg = 'background-color: #ffebe9;';
+ $delAccentBg = 'background-color: #ffd7d5;';
+ $tagBg = 'background-color: #eff0f6;';
+ $tagAccentBg = 'background-color: #d4d8e7;';
+ }
+
+ echo "<div style='padding: 12px;'>$gitfile</div>";
+
+ foreach (array_slice($lines, 4) as $line) {
+ $fc = substr( $line , 0 , 1 );
+
+ echo "<div style='display: flex;'>";
+
+ if ($fc == "+") {
+ echo "<div style='$lineNumberStyles $addAccentBg'></div>";
+ echo "<div style='$lineNumberStyles $addAccentBg'>$newLineNumber</div>";
+ echo "<div style='$addBg flex: 0 0 20px; text-align: center; user-select: none;'>$fc</div>";
+ echo "<div style='$codeStyles $addBg'>" . substr($line, 1) . "</div>\n";
+
+ $newLineNumber++;
+ } else if ($fc == "-") {
+ echo "<div style='$lineNumberStyles $delAccentBg'>$oldLineNumber</div>";
+ echo "<div style='$lineNumberStyles $delAccentBg'></div>";
+ echo "<div style='$delBg flex: 0 0 20px; text-align: center; user-select: none;'>$fc</div>";
+ echo "<div style='$codeStyles $delBg'>" . substr($line, 1) . "</div>\n";
+
+ $oldLineNumber++;
+ } else if ($fc == "@") {
+ preg_match('/-(\d+),\d+ \+(\d+)/', $line, $matches);
+ $oldLineNumber = $matches[1];
+ $newLineNumber = $matches[2];
+
+ echo "<div style='$lineNumberStyles $tagAccentBg color: #57606a; padding-top: 8px; padding-bottom: 8px;'>...</div>";
+ echo "<div style='$lineNumberStyles $tagAccentBg color: #57606a; padding-top: 8px; padding-bottom: 8px;'>...</div>";
+ echo "<div style='$codeStyles $tagBg color: #57606a; padding: 8px;'>$line</div>\n";
+ } else {
+ echo "<div style='$lineNumberStyles color: gray;'>$oldLineNumber</div>";
+ echo "<div style='$lineNumberStyles color: gray;'>$newLineNumber</div>";
+ echo "<div style='flex: 0 0 20px; text-align: center; user-select: none;'></div>";
+ echo "<div style='$codeStyles color: gray;'>" . substr($line, 1) . "</div>\n";
+
+ $oldLineNumber++;
+ $newLineNumber++;
+ }
+
+ echo '</div>';
}
echo "</div><p></p>";
}

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