Print done when done.

1 files changed, 74 insertions, 0 deletions

diff --git a/indra/llcommon/lllivefile.cpp b/indra/llcommon/lllivefile.cpp
new file mode 100644
index 0000000000..7dad6f82d8
--- /dev/null
+++ b/indra/llcommon/lllivefile.cpp
@@ -0,0 +1,74 @@
+/** 
+ * @file lllivefile.cpp
+ *
+ * Copyright (c) 2006-$CurrentYear$, Linden Research, Inc.
+ * $License$
+ */
+
+#include "linden_common.h"
+
+#include "lllivefile.h"
+
+
+LLLiveFile::LLLiveFile(const std::string &filename, const F32 refresh_period) :
+mForceCheck(true),
+mRefreshPeriod(refresh_period),
+mFilename(filename),
+mLastModTime(0),
+mLastExists(false)
+{
+}
+
+
+LLLiveFile::~LLLiveFile()
+{
+}
+
+
+bool LLLiveFile::checkAndReload()
+{
+	if (!mForceCheck && mRefreshTimer.getElapsedTimeF32() < mRefreshPeriod)
+	{
+		// Skip the check if not enough time has elapsed and we're not
+		// forcing a check of the file
+		return false;
+	}
+	mForceCheck = false;
+	mRefreshTimer.reset();
+
+	// Stat the file to see if it exists and when it was last modified.
+	llstat stat_data;
+	int res = LLFile::stat(mFilename.c_str(), &stat_data);
+
+	if (res)
+	{
+		// Couldn't stat the file, that means it doesn't exist or is
+		// broken somehow.  Clear flags and return.
+		if (mLastExists)
+		{
+			loadFile(); // Load the file, even though it's missing to allow it to clear state.
+			mLastExists = false;
+			return true;
+		}
+		return false;
+	}
+
+	// The file exists, decide if we want to load it.
+	if (mLastExists)
+	{
+		// The file existed last time, don't read it if it hasn't changed since
+		// last time.
+		if (stat_data.st_mtime <= mLastModTime)
+		{
+			return false;
+		}
+	}
+
+	// We want to read the file.  Update status info for the file.
+	mLastExists = true;
+	mLastModTime = stat_data.st_mtime;
+	
+	loadFile();
+	return true;
+}
+