Added directory reading functions.

Currently only has complete Win32 implementation. POSIX implementation
is incomplete.

lib/Makefile.am

@@ -33,7 +33,7 @@ libconfig_la_LDFLAGS = $(VERINFO) -no-undefined
 libconfig___la_LDFLAGS = $(VERINFO) -no-undefined
 
 libsrc = libconfig.c scanner.l grammar.y parsectx.h wincompat.h \
-	scanctx.c scanctx.h strbuf.c strbuf.h
+	scanctx.c scanctx.h strbuf.c strbuf.h dir.c dir.h
 libinc = libconfig.h
 
 libsrc_cpp =  $(libsrc) libconfigcpp.c++

lib/dir.c

+/* ----------------------------------------------------------------------------
+   libconfig - A library for processing structured configuration files
+   Copyright (C) 2005-2015  Mark A Lindner
+
+   This file is part of libconfig.
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License
+   as published by the Free Software Foundation; either version 2.1 of
+   the License, or (at your option) any later version.
+
+   This library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this library; if not, see
+   <http://www.gnu.org/licenses/>.
+   ----------------------------------------------------------------------------
+*/
+
+#include "dir.h"
+
+#ifdef WIN32
+#include <windows.h>
+#else // !WIN32
+#include <dirent.h>
+#include <stdlib.h>
+#endif // WIN32
+
+/* ------------------------------------------------------------------------- */
+
+struct dir_info
+{
+#ifdef WIN32
+  HANDLE dir;
+  WIN32_FIND_DATA dir_entry;
+  BOOL has_more_files;
+#else // !WIN32
+  DIR *dir;
+#endif // WIN32
+};
+
+/* ------------------------------------------------------------------------- */
+
+void *dir_open(const char *path)
+{
+  struct dir_info *dir_info =
+    (struct dir_info *)calloc(1, sizeof(struct dir_info));
+
+#ifdef WIN32
+
+  dir_info->dir = FindFirstFileA(path, &(dir_info->dir_entry));
+  if(dir_info->dir != INVALID_HANDLE_VALUE)
+    dir_info->has_more_files = TRUE;
+  else
+  {
+    free(dir_info);
+    dir_info = NULL;
+  }
+
+#else // !WIN32
+
+  dir_info->dir = opendir(path);
+  if(!dir_info->dir)
+  {
+    free(dir_info);
+    dir_info = NULL;
+  }
+
+#endif // WIN32
+
+  return(dir_info);
+}
+
+/* ------------------------------------------------------------------------- */
+
+const char *dir_next_ordinary_file(void *dirp)
+{
+  struct dir_info *dir_info = (struct dir_info *)dirp;
+
+#ifdef WIN32
+
+  if(!dir_info->has_more_files)
+    return(NULL);
+
+  while((dir_info->dir_entry.dwFileAttributes & FILE_ATTRIBUTE_NORMAL)
+        != FILE_ATTRIBUTE_NORMAL)
+  {
+    if(!FindNextFile(dir_info->dir, &(dir_info->dir_entry)))
+    {
+      dir_info->has_more_files = FALSE;
+      return(NULL);
+    }
+  }
+
+  return(dir_info->dir_entry.cFileName);
+
+#else // !WIN32
+
+  // TODO
+
+#endif // WIN32
+}
+
+/* ------------------------------------------------------------------------- */
+
+void dir_close(void *dirp)
+{
+  struct dir_info *dir_info = (struct dir_info *)dirp;
+
+#ifdef WIN32
+
+  FindClose(dir_info->dir);
+
+#else // !WIN32
+
+  closedir(dir_info->dir);
+
+#endif // WIN32
+
+  free(dir_info);
+}
+
+/* ------------------------------------------------------------------------- */

lib/dir.h

+/* ----------------------------------------------------------------------------
+   libconfig - A library for processing structured configuration files
+   Copyright (C) 2005-2015  Mark A Lindner
+
+   This file is part of libconfig.
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License
+   as published by the Free Software Foundation; either version 2.1 of
+   the License, or (at your option) any later version.
+
+   This library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this library; if not, see
+   <http://www.gnu.org/licenses/>.
+   ----------------------------------------------------------------------------
+*/
+
+#ifndef __libconfig_dir_h
+#define __libconfig_dir_h
+
+extern void *dir_open(const char *path);
+extern const char *dir_next_ordinary_file(void *dirp);
+extern void dir_close(void *dirp);
+
+#endif // __libconfig_dir_h