display blob based on mime type

author: Daniel Weipert <git@mail.dweipert.de> 2025-07-23 18:45:43 +0200
committer: Daniel Weipert <git@mail.dweipert.de> 2025-07-23 18:45:43 +0200
commit: 0eccccfab33bbad8d5731700c1ed959debe98bbd (patch)
tree: 3a0623d996803b6cc0669c0489db1a26560650e6
parent: d51eee7ed707568f58d305abb750349cb2f27bcc (diff)
1 files changed, 148 insertions, 30 deletions
diff --git a/index.php b/index.php
index d45341a..1dddf72 100644
--- a/index.php
+++ b/index.php
@@ -1,5 +1,11 @@
 <?php
 
+
+##
+# Git
+##
+
+
 /**
  * find projects at $path
  *
@@ -7,12 +13,18 @@
  */
 function find_projects(string $path, array $projects = []): array {
   $directories = glob($path . "/{.[!.],}*", GLOB_ONLYDIR | GLOB_BRACE);
-  if (($idx = array_search("$path/.git", $directories)) !== false) {
-    $projects[] = substr($directories[$idx], 0, -4);
+
+  if (array_search("$path/.git", $directories) !== false) {
+    $projects[] = $path;
   }
   else {
-    foreach ($directories as $directory) {
-      $projects += find_projects($directory, $projects);
+    if (count(array_intersect(scandir($path), ["HEAD", "objects", "refs"])) == 3) {
+      $projects[] = $path;
+    }
+    else {
+      foreach ($directories as $directory) {
+        $projects += find_projects($directory, $projects);
+      }
     }
   }
 
@@ -53,6 +65,7 @@ function parse_log(string $path): array {
   return $cache_parse_log[$path] = $json ?? [];
 }
 
+
 /**
  * parse git status at $path
  */
@@ -138,6 +151,7 @@ function parse_status(string $path): array {
   return $status;
 }
 
+
 /**
  * get git file tree at $path for $revision under $tree_base_path
  */
@@ -145,7 +159,7 @@ function get_file_tree(string $path, string $revision, string $tree_base_path):
 {
   $proxy = md5(strval(microtime(true)));
   $process = proc_open(
-    "git -C \"{$path}\" ls-tree {$revision} {$tree_base_path}" . " --format='{%n  {$proxy}mode{$proxy}: {$proxy}%(objectmode){$proxy},%n  {$proxy}type{$proxy}: {$proxy}%(objecttype){$proxy},%n  {$proxy}name{$proxy}: {$proxy}%(objectname){$proxy},%n  {$proxy}size{$proxy}: {$proxy}%(objectsize){$proxy},%n  {$proxy}path{$proxy}: {$proxy}%(path){$proxy}%n},'",
+    "git -C \"{$path}\" ls-tree {$revision} \"{$tree_base_path}\"" . " --format='{%n  {$proxy}mode{$proxy}: {$proxy}%(objectmode){$proxy},%n  {$proxy}type{$proxy}: {$proxy}%(objecttype){$proxy},%n  {$proxy}name{$proxy}: {$proxy}%(objectname){$proxy},%n  {$proxy}size{$proxy}: {$proxy}%(objectsize){$proxy},%n  {$proxy}path{$proxy}: {$proxy}%(path){$proxy}%n},'",
     [
       ["pipe", "r"],
       ["pipe", "w"],
@@ -165,6 +179,69 @@ function get_file_tree(string $path, string $revision, string $tree_base_path):
 
 
 /**
+ * get git file info for single file at $file_path in repository at $path
+ */
+function get_file_info(string $path, string $file_path): array
+{
+  $tree = get_file_tree($path, "HEAD", $file_path);
+
+  $info = [];
+  foreach ($tree as $file) {
+    if ($file["path"] == $file_path) {
+      $info = $file;
+      break;
+    }
+  }
+
+  return $info;
+}
+
+
+/**
+ * get file contents based on $name (git object id) in repository at $path
+ */
+function read_object_file(string $path, string $name): string
+{
+  $process = proc_open(
+    "git -C \"{$path}\" cat-file -p \"{$name}\"",
+    [
+      ["pipe", "r"],
+      ["pipe", "w"],
+      ["pipe", "w"],
+    ],
+    $pipes
+  );
+
+  return stream_get_contents($pipes[1]);
+}
+
+
+##
+# Utility
+##
+
+
+/**
+ * urlencode whole $url
+ */
+function uri_encode(string $url): string
+{
+  return implode(
+    "/",
+    array_map(
+      fn ($value) => urlencode($value),
+      explode("/", $url)
+    )
+  );
+}
+
+
+##
+# Template
+##
+
+
+/**
  * Template root
  */
 function template_root(string $content, array $meta = []): string
@@ -180,12 +257,17 @@ function template_root(string $content, array $meta = []): string
   <html>
   <head>
     <title><?php echo $meta["title"]; ?></title>
+    <meta name="viewport" content="width=device-width, height=device-height, initial-scale=1.0, minimum-scale=1.0">
     <style>
     .blob-code-block {
       pre {
         border: 1px solid;
         display: inline-block;
         padding: 1rem;
+        box-sizing: border-box;
+        max-width: 100vw;
+        white-space: pre-wrap;
+        word-break: break-word;
       }
     }
     </style>
@@ -198,6 +280,34 @@ function template_root(string $content, array $meta = []): string
 }
 
 
+/**
+ * build breadcrumbs
+ */
+function breadcrumbs(string $root, string $path): string
+{
+  ob_start();
+
+  $breadcrumbs = explode("/", trim(str_replace($root, "", $path), "/"));
+  echo "<a href=\"$root\">root</a>";
+  $crumb_parts = "";
+  foreach ($breadcrumbs as $idx => $crumb) {
+    $crumb_parts .= "/$crumb";
+    if ($idx < count($breadcrumbs) - 1) {
+      echo "/<a href=\"$root$crumb_parts\">$crumb</a>";
+    } else {
+      echo "/$crumb";
+    }
+  }
+
+  return ob_get_clean();
+}
+
+
+##
+# Output
+##
+
+
 $projects_path = realpath($_ENV["PHPGIT_PROJECTS_PATH"]);
 
 $url = parse_url("http://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]");
@@ -251,7 +361,7 @@ if ($url["path"] == "/") {
 
     ?><tr><?php
 
-    ?><td><a href="<?php echo $name; ?>/tree"><?php
+    ?><td><a href="/<?php echo uri_encode($name); ?>/tree"><?php
     echo $name;
     ?></a></td><?php
 
@@ -285,13 +395,7 @@ elseif (preg_match("#(.*)/tree/?(.*)#", $url["path"], $matches)) {
   $tree = get_file_tree("$projects_path/$project", "HEAD", "./{$file_path}/");
 
   // show breadcrumbs
-  $breadcrumbs = explode("/", $file_path);
-  echo "<a href='/$project/tree'>root</a>";
-  $crumb_parts = "";
-  foreach ($breadcrumbs as $idx => $crumb) {
-    $crumb_parts .= "/$crumb";
-    echo "/<a href='/$project/tree$crumb_parts'>$crumb</a>";
-  }
+  echo breadcrumbs("/$project/tree", "/$project/tree/$file_path");
 
   // build list
   ?>
@@ -306,7 +410,7 @@ elseif (preg_match("#(.*)/tree/?(.*)#", $url["path"], $matches)) {
   <?php
   
   foreach ($tree as $file) {
-    $current_file_path = $file_path . "/";
+    $current_file_path = empty($file_path) ? "" : $file_path . "/";
     $basename = basename($file["path"]);
     
     ?><tr><?php
@@ -314,9 +418,9 @@ elseif (preg_match("#(.*)/tree/?(.*)#", $url["path"], $matches)) {
     ?><td><?php echo $file["mode"]; ?></td><?php
 
     if ($file["type"] == "blob"):
-      ?><td><a href="<?php echo "/$project/blob/$current_file_path$basename"; ?>"><?php echo $basename; ?></a><td><?php
+      ?><td><a href="<?php echo uri_encode("/$project/blob/$current_file_path$basename"); ?>"><?php echo $basename; ?></a><td><?php
     else:
-      ?><td><a href="<?php echo "/$project/tree/$current_file_path$basename"; ?>"><?php echo $basename; ?></a><td><?php
+      ?><td><a href="<?php echo uri_encode("/$project/tree/$current_file_path$basename"); ?>"><?php echo $basename; ?></a><td><?php
     endif;
     
     ?></tr><?php
@@ -328,35 +432,49 @@ elseif (preg_match("#(.*)/tree/?(.*)#", $url["path"], $matches)) {
   <?php
 }
 
+
 // Route: /$project/blob/$file_path
 elseif (preg_match("#(.*)/blob/?(.*)#", $url["path"], $matches)) {
   $project = urldecode(ltrim($matches[1], "/"));
   $file_path = urldecode(rtrim($matches[2], "/"));
-  
+ 
   // show breadcrumbs
-  $breadcrumbs = explode("/", $file_path);
-  echo "<a href='/$project/tree'>root</a>";
-  $crumb_parts = "";
-  foreach ($breadcrumbs as $idx => $crumb) {
-    $crumb_parts .= "/$crumb";
-    if ($idx != count($breadcrumbs) - 1) {
-      echo "/<a href='/$project/tree$crumb_parts'>$crumb</a>";
-    } else {
-      echo "/$crumb";
-    }
-  }
+  echo breadcrumbs("/$project/tree", "/$project/tree/$file_path");
+
+  // get file info
+  $info = get_file_info("$projects_path/$project", $file_path);
+  $contents = read_object_file("$projects_path/$project", $info["name"]);
+  $mime_type = (new finfo(FILEINFO_MIME_TYPE))->buffer($contents);
+
+  $memory_limit = (int)ini_get("memory_limit") * 1024 ** ["k" => 1, "m" => 2, "g" => 3][strtolower(ini_get("memory_limit")[-1])];
 
   ?>
-  <div class="blob-code-block">
-    <pre><code><?php echo file_get_contents("$projects_path/$project/$file_path"); ?></code></pre>
+  <div>
+    Mime Type: <?php echo $mime_type; ?>
+    <br>
+    <?php if (strlen($contents) * 2 < $memory_limit - memory_get_usage()): ?>
+      <?php if (str_starts_with($mime_type, "image/")): ?>
+        <img src="data:image/<?php echo substr($mime_type, 6); ?>;base64,<?php echo base64_encode($contents); ?>">
+      <?php elseif (str_starts_with($mime_type, "audio/")): ?>
+        <audio controls src="data:audio/<?php echo substr($mime_type, 6); ?>;base64,<?php echo base64_encode($contents); ?>" />
+      <?php else: ?>
+        <div class="blob-code-block">
+          <pre><code><?php echo htmlspecialchars($contents); ?></code></pre>
+        </div>
+      <?php endif; ?>
+    <?php else: ?>
+      Can't process. Memory limit of <?php echo ini_get("memory_limit"); ?> would be exhausted.
+    <?php endif; ?>
   </div>
   <?php
 }
 
+
 else {
   $path = $projects_path . $url["path"];
   var_dump(parse_log($path));
 }
 
+
 // display
 echo template_root(ob_get_clean());
author	Daniel Weipert <git@mail.dweipert.de>	2025-07-23 18:45:43 +0200
committer	Daniel Weipert <git@mail.dweipert.de>	2025-07-23 18:45:43 +0200
commit	0eccccfab33bbad8d5731700c1ed959debe98bbd (patch)
tree	3a0623d996803b6cc0669c0489db1a26560650e6
parent	d51eee7ed707568f58d305abb750349cb2f27bcc (diff)