From a865d423974ea06dffa47798c81e98e7570b02ec Mon Sep 17 00:00:00 2001
From: Alexander Gavriliuk <alexandrgproductengine@lindenlab.com>
Date: Tue, 5 Mar 2024 17:03:11 +0100
Subject: viewer#819 Avoid reading the same XML file multiple times

---
 indra/llfilesystem/lldir.cpp | 33 ++++++++++++++++++++++++++++++---
 1 file changed, 30 insertions(+), 3 deletions(-)

(limited to 'indra/llfilesystem/lldir.cpp')

diff --git a/indra/llfilesystem/lldir.cpp b/indra/llfilesystem/lldir.cpp
index 69b23f9cf8..ee5dec2b77 100644
--- a/indra/llfilesystem/lldir.cpp
+++ b/indra/llfilesystem/lldir.cpp
@@ -71,6 +71,7 @@ LLDir *gDirUtilp = (LLDir *)&gDirUtil;
 /// Values for findSkinnedFilenames(subdir) parameter
 const char
 	*LLDir::XUI      = "xui",
+	*LLDir::HTML     = "html",
 	*LLDir::TEXTURES = "textures",
 	*LLDir::SKINBASE = "";
 
@@ -761,14 +762,13 @@ std::vector<std::string> LLDir::findSkinnedFilenames(const std::string& subdir,
 		else
 		{
 			// We do not recognize this subdir. Investigate.
-			std::string subdir_path(add(getDefaultSkinDir(), subdir));
-			if (fileExists(add(subdir_path, "en")))
+			if (skinExists(subdir, "en"))
 			{
 				// defaultSkinDir/subdir contains subdir "en". That's our
 				// default language; this subdir is localized.
 				found = sLocalized.insert(StringMap::value_type(subdir, "en")).first;
 			}
-			else if (fileExists(add(subdir_path, "en-us")))
+			else if (skinExists(subdir, "en-us"))
 			{
 				// defaultSkinDir/subdir contains subdir "en-us" but not "en".
 				// Set as default language; this subdir is localized.
@@ -865,6 +865,33 @@ std::vector<std::string> LLDir::findSkinnedFilenames(const std::string& subdir,
 	return results;
 }
 
+// virtual
+bool LLDir::skinExists(const std::string& subdir, const std::string& skin) const
+{
+    std::string skin_path(add(getDefaultSkinDir(), subdir, skin));
+    return fileExists(skin_path);
+}
+
+// virtual
+std::string LLDir::getFileContents(const std::string& filename) const
+{
+    LLFILE* fp = LLFile::fopen(filename, "rb"); /* Flawfinder: ignore */
+    if (fp)
+    {
+        fseek(fp, 0, SEEK_END);
+        U32 length = ftell(fp);
+        fseek(fp, 0, SEEK_SET);
+
+        std::vector<char> buffer(length);
+        size_t nread = fread(buffer.data(), 1, length, fp);
+        fclose(fp);
+
+        return std::string(buffer.data(), nread);
+    }
+
+    return LLStringUtil::null;
+}
+
 std::string LLDir::getTempFilename() const
 {
 	LLUUID random_uuid;
-- 
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