--- psiconv/trunk/lib/psiconv/buffer.c	2000/12/27 02:12:23	80
+++ psiconv/trunk/lib/psiconv/buffer.c	2014/10/22 19:53:40	351
@@ -1,6 +1,6 @@
 /*
     buffer.c - Part of psiconv, a PSION 5 file formats converter
-    Copyright (c) 2000  Frodo Looijaard <frodol@dds.nl>       
+    Copyright (c) 2000-2014  Frodo Looijaard <frodo@frodo.looijaard.name>       
 
     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
@@ -27,6 +27,10 @@
 #include "error.h"
 #include "buffer.h"
 
+#ifdef DMALLOC
+#include <dmalloc.h>
+#endif
+
 typedef struct psiconv_relocation_s {
   psiconv_u32 offset;
   int id;
@@ -82,7 +86,6 @@
   return psiconv_list_length(buf->data);
 }
 
-
 psiconv_u8 *psiconv_buffer_get(const psiconv_buffer buf, psiconv_u32 off)
 {
   return psiconv_list_get(buf->data,off);
@@ -93,7 +96,7 @@
   return psiconv_list_add(buf->data,&data);
 }
 
-size_t psiconv_buffer_fread(psiconv_buffer buf,size_t size, FILE *f)
+size_t psiconv_buffer_fread(psiconv_buffer buf, size_t size, FILE *f)
 {
   return psiconv_list_fread(buf->data,size,f);
 }
@@ -108,6 +111,33 @@
   return psiconv_list_fwrite_all(buf->data,f);
 }
 
+int psiconv_buffer_subbuffer(psiconv_buffer *buf, const psiconv_buffer org,
+                             psiconv_u32 offset, psiconv_u32 length)
+{
+  int i;
+  int res;
+  psiconv_u8 *data;
+  if (! (*buf = psiconv_buffer_new())) {
+    res = PSICONV_E_NOMEM;
+    goto ERROR1;
+  }
+  for (i = 0; i < length; i++) {
+    if (!(data = psiconv_buffer_get(org,offset+i))) {
+      res = PSICONV_E_OTHER;
+      goto ERROR2;
+    }
+    if ((res = psiconv_buffer_add(*buf,*data))) {
+      goto ERROR2;
+    }
+  }
+  return 0;
+
+ERROR2:
+	psiconv_buffer_free(*buf);
+ERROR1:
+	return res;
+}
+
 int psiconv_buffer_concat(psiconv_buffer buf, const psiconv_buffer extra)
 {
   int res;