X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Fdata.cc;h=e843736100012e562805596dcdcda60d0de0bb2f;hb=f0a6d7b5b8d16b8b47917cd30b340917f5c62fc5;hp=a326ed3b7e3b3fcb2dc958425ed55b368679b075;hpb=faa03caeb082459e0283be39198464f50bef780a;p=libdcp.git

diff --git a/src/data.cc b/src/data.cc
index a326ed3b..e8437361 100644
--- a/src/data.cc
+++ b/src/data.cc
@@ -17,33 +17,79 @@
 
 */
 
-/** @file  src/data.cc
- *  @brief Data class.
- */
-
 #include "data.h"
 #include "util.h"
 #include "exceptions.h"
 #include <cstdio>
+#include <cerrno>
 
+using boost::shared_array;
 using namespace dcp;
 
-/** Construct a Data object from the contents of a file.
- *  @param file File to read.
- */
+Data::Data ()
+	: _size (0)
+{
+
+}
+
+Data::Data (int size)
+	: _data (new uint8_t[size])
+	, _size (size)
+{
+
+}
+
+Data::Data (uint8_t const * data, int size)
+	: _data (new uint8_t[size])
+	, _size (size)
+{
+	memcpy (_data.get(), data, size);
+}
+
+Data::Data (shared_array<uint8_t> data, int size)
+	: _data (data)
+	, _size (size)
+{
+
+}
+
 Data::Data (boost::filesystem::path file)
 {
+	_size = boost::filesystem::file_size (file);
+	_data.reset (new uint8_t[_size]);
+
 	FILE* f = fopen_boost (file, "rb");
 	if (!f) {
 		throw FileError ("could not open file for reading", file, errno);
 	}
 
-	size = boost::filesystem::file_size (file);
-	data.reset (new uint8_t[size]);
-	size_t const read = fread (data.get(), 1, size, f);
+	size_t const r = fread (_data.get(), 1, _size, f);
+	if (r != size_t (_size)) {
+		fclose (f);
+		throw FileError ("could not read from file", file, errno);
+	}
+
 	fclose (f);
+}
 
-	if (read != size) {
-		throw FileError ("could not read file", file, -1);
+void
+Data::write (boost::filesystem::path file) const
+{
+	FILE* f = fopen_boost (file, "wb");
+	if (!f) {
+		throw FileError ("could not write to file", file, errno);
+	}
+	size_t const r = fwrite (_data.get(), 1, _size, f);
+	if (r != size_t (_size)) {
+		fclose (f);
+		throw FileError ("could not write to file", file, errno);
 	}
+	fclose (f);
+}
+
+void
+Data::write_via_temp (boost::filesystem::path temp, boost::filesystem::path final) const
+{
+	write (temp);
+	boost::filesystem::rename (temp, final);
 }