1 files changed, 45 insertions, 0 deletions
diff --git a/gentoobrowse-api/service/fileUtils.cpp b/gentoobrowse-api/service/fileUtils.cpp
new file mode 100644
index 0000000..cfa02bc
--- /dev/null
+++ b/gentoobrowse-api/service/fileUtils.cpp
@@ -0,0 +1,45 @@
+#include "fileUtils.h"
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/mman.h>
+
+namespace Gentoo {
+	namespace Utils {
+		FileHandle::FileHandle(const std::string & path) :
+			fh(open(path.c_str(), O_RDONLY))
+		{
+			if (fh < 0) {
+				throw std::runtime_error("Failed to open " + path);
+			}
+		}
+
+		FileHandle::~FileHandle()
+		{
+			close(fh);
+		}
+
+		FileHandleStat::FileHandleStat(const std::string & path) :
+			FileHandle(path)
+		{
+			if (fstat(fh, &st)) {
+				throw std::runtime_error("Failed to stat " + path);
+			}
+		}
+
+		MemMap::MemMap(const std::string & path) :
+			FileHandleStat(path),
+			data(mmap(0, st.st_size, PROT_READ, MAP_SHARED, fh, 0))
+		{
+			if (data == (void*)-1) {
+				throw std::runtime_error("Failed to mmap " + path);
+			}
+		}
+
+		MemMap::~MemMap()
+		{
+			munmap(data, st.st_size);
+		}
+
+	}
+}
+