Add AIFile - LLFile but throws AIAlertCode exceptions on error.

The code is the current errno.
2013-11-04 01:41:33 +01:00
parent 193010e947
commit 78673e4a94
4 changed files with 187 additions and 0 deletions
--- a/indra/llcommon/aifile.cpp
+++ b/indra/llcommon/aifile.cpp
@@ -0,0 +1,118 @@
+/**
+ * @file aifile.cpp
+ * @brief POSIX file operations that throw on error.
+ *
+ * Copyright (c) 2013, Aleric Inglewood.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution.
+ *
+ * CHANGELOG
+ *   and additional copyright holders.
+ *
+ *   03/11/2013
+ *   Initial version, written by Aleric Inglewood @ SL
+ */
+
+#include "linden_common.h"
+#include "aifile.h"
+#include "aialert.h"
+
+#if LL_WINDOWS
+#include <windows.h>
+#include <stdlib.h>                 // Windows errno
+#else
+#include <errno.h>
+#endif
+
+AIFile::AIFile(std::string const& filename, char const* accessmode)
+{
+  mFp = AIFile::fopen(filename, accessmode);
+}
+
+AIFile::~AIFile()
+{
+  AIFile::close(mFp);
+}
+
+// Like THROW_MALERTE but appends "LLFile::strerr(errn) << " (" << errn << ')'" as argument to replace [ERROR].
+#define THROW_ERROR(...) \
+  do { \
+	int errn = errno; \
+	std::ostringstream error; \
+	error << LLFile::strerr(errn) << " (" << errn << ')'; \
+	THROW_MALERT_CLASS(AIAlertCode, errn, __VA_ARGS__ ("[ERROR]", error.str())); \
+  } while(0)
+
+//static
+void AIFile::mkdir(std::string const& dirname, int perms)
+{
+	int rc = LLFile::mkdir(dirname, perms);
+	if (rc < 0 && rc != EEXIST)
+	{
+		THROW_ERROR("AIFile_mkdir_Failed_to_create_DIRNAME", AIArgs("[DIRNAME]", dirname));
+	}
+}
+
+//static
+void AIFile::rmdir(std::string const& dirname)
+{
+	int rc = LLFile::rmdir(dirname);
+	if (rc < 0 && rc != ENOENT)
+	{
+		THROW_ERROR("AIFile_rmdir_Failed_to_remove_DIRNAME", AIArgs("[DIRNAME]", dirname));
+	}
+}
+
+//static
+LLFILE*	AIFile::fopen(std::string const& filename, const char* mode)
+{
+	LLFILE* fp = LLFile::fopen(filename, mode);
+	if (!fp)
+	{
+		THROW_ERROR("AIFile_fopen_Failed_to_open_FILENAME", AIArgs("[FILENAME]", filename));
+	}
+	return fp;
+}
+
+//static
+void AIFile::close(LLFILE* file)
+{
+	if (LLFile::close(file) < 0)
+	{
+		THROW_ERROR("AIFile_close_Failed_to_close_file", AIArgs);
+	}
+}
+
+//static
+void AIFile::remove(std::string const& filename)
+{
+	if (LLFile::remove(filename) < 0)
+	{
+		THROW_ERROR("AIFile_remove_Failed_to_remove_FILENAME", AIArgs("[FILENAME]", filename));
+	}
+}
+
+//static
+void AIFile::rename(std::string const& filename, std::string const& newname)
+{
+	if (LLFile::rename(filename, newname) < 0)
+	{
+		THROW_ERROR("AIFile_rename_Failed_to_rename_FILE_to_NEWFILE", AIArgs("[FILE]", filename)("[NEWFILE]", newname));
+	}
+}
+