From f9403975df404eb03db29a6ffa655158d2739b1f Mon Sep 17 00:00:00 2001
From: Stijn Buys <ingar@osirion.org>
Date: Sat, 7 Jan 2012 14:21:22 +0000
Subject: Added class to read filenames from a directory.

---
 src/filesystem/Makefile.am  |  2 ++
 src/filesystem/directory.cc | 82 +++++++++++++++++++++++++++++++++++++++++++++
 src/filesystem/directory.h  | 67 ++++++++++++++++++++++++++++++++++++
 src/filesystem/file.cc      |  2 +-
 src/filesystem/filestream.h |  2 +-
 src/filesystem/filesystem.h |  1 +
 6 files changed, 154 insertions(+), 2 deletions(-)
 create mode 100644 src/filesystem/directory.cc
 create mode 100644 src/filesystem/directory.h

diff --git a/src/filesystem/Makefile.am b/src/filesystem/Makefile.am
index ed2e6bf..8f5bafd 100644
--- a/src/filesystem/Makefile.am
+++ b/src/filesystem/Makefile.am
@@ -3,6 +3,7 @@ INCLUDES = -I$(top_srcdir)/src
 
 noinst_LTLIBRARIES = libfilesystem.la
 noinst_HEADERS = \
+	directory.h \
 	diskfile.h \
 	file.h \
 	filestream.h \
@@ -11,6 +12,7 @@ noinst_HEADERS = \
 	inistream.h
 
 libfilesystem_la_SOURCES = \
+	directory.cc \
 	diskfile.cc \
 	file.cc \
 	filestream.cc \
diff --git a/src/filesystem/directory.cc b/src/filesystem/directory.cc
new file mode 100644
index 0000000..7339f17
--- /dev/null
+++ b/src/filesystem/directory.cc
@@ -0,0 +1,82 @@
+/*
+   filesystem/directory.cc
+   This file is part of the Osirion project and is distributed under
+   the terms of the GNU General Public License version 2
+*/
+
+// system headers
+#include <dirent.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+// project headers
+#include "filesystem/directory.h"
+
+namespace filesystem
+{
+
+Directory::Directory() 
+{	
+}
+
+Directory::Directory(const std::string &location) :
+	directory_location(location)
+{
+	read();
+}
+
+Directory::~Directory() 
+{
+	clear();
+}
+
+
+void Directory::set_location(const std::string & location)
+{
+	clear();
+	directory_location.assign(location);
+	read();
+}
+
+void Directory::clear()
+{
+	directory_filenames.clear();
+	directory_location.clear();
+}
+
+void Directory::read()
+{
+	DIR *directory_handle;
+	struct dirent *directory_entry;
+	struct stat file_stat;	
+	
+	directory_handle = opendir(directory_location.c_str());
+	
+	if (directory_handle) {
+		while ((directory_entry = readdir(directory_handle))) {
+
+			std::string file_path(directory_location);
+			
+			file_path += '/';
+			file_path.append(directory_entry->d_name);
+			    
+			// skip invalid files
+    			if (stat(file_path.c_str(), &file_stat)) {
+				continue;
+			}
+			
+			// skip subdiretories
+    			if (S_ISDIR(file_stat.st_mode)) {
+				continue;
+			}
+			
+			directory_filenames.push_back(file_path);
+		}
+	}
+	
+	closedir(directory_handle);
+}
+
+} // namespace filesystem
+
diff --git a/src/filesystem/directory.h b/src/filesystem/directory.h
new file mode 100644
index 0000000..cdd9870
--- /dev/null
+++ b/src/filesystem/directory.h
@@ -0,0 +1,67 @@
+/*
+   filesystem/directory.h
+   This file is part of the Osirion project and is distributed under
+   the terms of the GNU General Public License version 2
+*/
+
+#ifndef __INCLUDED_FILESYSTEM_DIRECTORY_H__
+#define __INCLUDED_FILESYSTEM_DIRECTORY_H__
+
+// C++ headers
+#include <string>
+#include <list>
+
+namespace filesystem
+{
+
+/**
+ * @brief an abstract interface to handle file access
+ */
+class Directory {
+
+public:
+	typedef std::list<std::string> FileNames;
+	
+	Directory();
+	
+	Directory(const std::string & location);
+	
+	~Directory();
+	
+	// inspectors
+	
+	/**
+	 * @brief returns the underlying filesystem location
+	 */
+	inline const std::string & location() const {
+		return directory_location;
+	}
+
+	inline const FileNames & filenames() const {
+		return directory_filenames;
+	}
+
+	// mutators
+		
+	/**
+	 * @brief set the underlying filesystem location
+	 */
+	void set_location(const std::string & location);
+	
+	/**
+	 * @brief read the filenames from current filesystem location
+	 */
+	void read();
+	
+	void clear();
+private:
+	
+	std::string		directory_location;
+	
+	FileNames		directory_filenames;
+};
+
+} // namespace filesystem
+
+#endif // __INCLUDED_FILESYSTEM_DIRECTORY_H__
+
diff --git a/src/filesystem/file.cc b/src/filesystem/file.cc
index 628ba22..0eeb32d 100644
--- a/src/filesystem/file.cc
+++ b/src/filesystem/file.cc
@@ -1,5 +1,5 @@
 /*
-   fs/file.cc
+   filesystem/file.cc
    This file is part of the Osirion project and is distributed under
    the terms of the GNU General Public License version 2
 */
diff --git a/src/filesystem/filestream.h b/src/filesystem/filestream.h
index a97d1fb..ceac6c5 100644
--- a/src/filesystem/filestream.h
+++ b/src/filesystem/filestream.h
@@ -1,5 +1,5 @@
 /*
-   filesystem/ifilestream.h
+   filesystem/filestream.h
    This file is part of the Osirion project and is distributed under
    the terms of the GNU General Public License version 2
 */
diff --git a/src/filesystem/filesystem.h b/src/filesystem/filesystem.h
index 5fe97d0..9608b74 100644
--- a/src/filesystem/filesystem.h
+++ b/src/filesystem/filesystem.h
@@ -7,6 +7,7 @@
 #ifndef __INCLUDED_FILESYSTEM_H__
 #define __INCLUDED_FILESYSTEM_H__
 
+#include "filesystem/directory.h"
 #include "filesystem/file.h"
 #include "filesystem/diskfile.h"
 #include "filesystem/inifile.h"
-- 
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