1 files changed, 104 insertions, 0 deletions
diff --git a/src/w_file_stdc.c b/src/w_file_stdc.c
new file mode 100644
index 00000000..04450e8b
--- /dev/null
+++ b/src/w_file_stdc.c
@@ -0,0 +1,104 @@
+// Emacs style mode select   -*- C++ -*- 
+//-----------------------------------------------------------------------------
+//
+// Copyright(C) 1993-1996 Id Software, Inc.
+// Copyright(C) 2008 Simon Howard
+//
+// 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, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+// 02111-1307, USA.
+//
+// DESCRIPTION:
+//	WAD I/O functions.
+//
+//-----------------------------------------------------------------------------
+
+#include <stdio.h>
+
+#include "m_misc.h"
+#include "w_file.h"
+#include "z_zone.h"
+
+typedef struct
+{
+    wad_file_t wad;
+    FILE *fstream;
+} stdc_wad_file_t;
+
+extern wad_file_class_t stdc_wad_file;
+
+static wad_file_t *W_StdC_OpenFile(char *path)
+{
+    stdc_wad_file_t *result;
+    FILE *fstream;
+
+    fstream = fopen(path, "rb");
+
+    if (fstream == NULL)
+    {
+        return NULL;
+    }
+
+    // Create a new stdc_wad_file_t to hold the file handle.
+
+    result = Z_Malloc(sizeof(stdc_wad_file_t), PU_STATIC, 0);
+    result->wad.file_class = &stdc_wad_file;
+    result->wad.mapped = NULL;
+    result->wad.length = M_FileLength(fstream);
+    result->fstream = fstream;
+
+    return &result->wad;
+}
+
+static void W_StdC_CloseFile(wad_file_t *wad)
+{
+    stdc_wad_file_t *stdc_wad;
+
+    stdc_wad = (stdc_wad_file_t *) wad;
+
+    fclose(stdc_wad->fstream);
+    Z_Free(stdc_wad);
+}
+
+// Read data from the specified position in the file into the 
+// provided buffer.  Returns the number of bytes read.
+
+size_t W_StdC_Read(wad_file_t *wad, unsigned int offset,
+                   void *buffer, size_t buffer_len)
+{
+    stdc_wad_file_t *stdc_wad;
+    size_t result;
+
+    stdc_wad = (stdc_wad_file_t *) wad;
+
+    // Jump to the specified position in the file.
+
+    fseek(stdc_wad->fstream, offset, SEEK_SET);
+
+    // Read into the buffer.
+
+    result = fread(buffer, 1, buffer_len, stdc_wad->fstream);
+
+    return result;
+}
+
+
+wad_file_class_t stdc_wad_file = 
+{
+    W_StdC_OpenFile,
+    W_StdC_CloseFile,
+    W_StdC_Read,
+};
+
+