added entries and readFilename

src/DirHelper.cc

@@ -19,11 +19,12 @@
 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 // DEALINGS IN THE SOFTWARE.
 
-// $Id: DirHelper.cc,v 1.1 2002/12/02 19:44:25 fluxgen Exp $
+// $Id: DirHelper.cc,v 1.2 2003/02/15 01:42:17 fluxgen Exp $
 
 #include "DirHelper.hh"
 
-DirHelper::DirHelper(const char *dir):m_dir(0) {
+DirHelper::DirHelper(const char *dir):m_dir(0),
+m_num_entries(0) {
     if (dir != 0)
         open(dir);
 }
@@ -45,23 +46,39 @@ struct dirent *DirHelper::read() {
     return readdir(m_dir);
 }
 
+std::string DirHelper::readFilename() {
+    dirent *ent = read();
+    if (ent == 0)
+        return "";
+    return (ent->d_name ? ent->d_name : "");
+}
+
 void DirHelper::close() {
     if (m_dir != 0) { 
         closedir(m_dir);
         m_dir = 0;
+        m_num_entries = 0;
     }
 }
 
+
 bool DirHelper::open(const char *dir) {
-    if (m_dir != 0)
-        close();
     if (dir == 0)
         return false;
 
-    m_dir = opendir(dir);
-    if (m_dir != 0) // successfull loading?
-        return true;
+    if (m_dir != 0)
+        close();
 
+    m_dir = opendir(dir);
+    if (m_dir == 0) // successfull loading?
         return false;
+
+    // get number of entries
+    while (read())
+        m_num_entries++;
+
+    rewind(); // go back to start
+
+    return true;
 }
 

src/DirHelper.hh

@@ -1,5 +1,5 @@
 // DirHelper.hh
-// Copyright (c) 2002 Henrik Kinnunen (fluxgen at users.sourceforge.net)
+// Copyright (c) 2002-2003 Henrik Kinnunen (fluxgen at users.sourceforge.net)
 //
 // Permission is hereby granted, free of charge, to any person obtaining a
 // copy of this software and associated documentation files (the "Software"),
@@ -19,29 +19,35 @@
 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 // DEALINGS IN THE SOFTWARE.
 
-// $Id: DirHelper.hh,v 1.1 2002/12/02 19:44:24 fluxgen Exp $
+// $Id: DirHelper.hh,v 1.2 2003/02/15 01:41:50 fluxgen Exp $
 
 #ifndef DIRHELPER_HH
 #define DIRHELPER_HH
 
-#include <sys/types.h>
-#include <dirent.h>
-
 #include "NotCopyable.hh"
 
-/**
-  Wrapper class for DIR * routines
-*/
+#include <sys/types.h>
+#include <dirent.h>
+#include <string>
+
+///  Wrapper class for DIR * routines
 class DirHelper: private FbTk::NotCopyable {
 public:
     explicit DirHelper(const char *dir = 0);
     ~DirHelper();
+
     void rewind();
+    /// gets next dirent info struct in directory
     struct dirent * read();
+    /// reads next filename in directory
+    std::string readFilename();
     void close();    
     bool open(const char *dir);
+    /// @return number of entries in the directory
+    size_t entries() const { return m_num_entries; }
 private:
     DIR *m_dir;
+    size_t m_num_entries; ///< number of file entries in directory
 };
 
 #endif // DIRHELPER_HH