(mu_temp_file_stream_create): New function.

@@ -43,23 +43,25 @@ extern "C" { /*}*/
 /* Functions useful to users of the pre-defined stream types. */
 
 extern int mu_file_stream_create    (mu_stream_t *stream, const char* filename,
-				  int flags);
+				     int flags);
+extern int mu_temp_file_stream_create (mu_stream_t *stream, const char *dir);
+  
 extern int mu_tcp_stream_create     (mu_stream_t *stream, const char* host,
-				  int port, int flags);
+				     int port, int flags);
 extern int mu_mapfile_stream_create (mu_stream_t *stream, const char* filename,
-				  int flags);
+				     int flags);
 extern int mu_memory_stream_create  (mu_stream_t *stream, const char* filename,
-				  int flags);
+				     int flags);
 extern int mu_encoder_stream_create (mu_stream_t *stream, mu_stream_t iostream,
-				  const char *encoding);
+				     const char *encoding);
 extern int mu_decoder_stream_create (mu_stream_t *stream, mu_stream_t iostream,
-				  const char *encoding);
+				     const char *encoding);
 extern int mu_stdio_stream_create   (mu_stream_t *stream, FILE* stdio,
-				  int flags);
+				     int flags);
 extern int mu_prog_stream_create    (mu_stream_t *stream, const char *progname,
-				  int flags);
+				     int flags);
 int mu_filter_prog_stream_create    (mu_stream_t *stream, const char *progname,
-				  mu_stream_t input);
+				     mu_stream_t input);
   
 extern void mu_stream_destroy    (mu_stream_t *, void *owner);
 
@@ -67,7 +69,7 @@ extern int mu_stream_open        (mu_stream_t);
 extern int mu_stream_close       (mu_stream_t);
 extern int mu_stream_is_seekable (mu_stream_t);
 extern int mu_stream_get_transport2 (mu_stream_t stream, mu_transport_t *pt,
-				  mu_transport_t *pt2);
+				     mu_transport_t *pt2);
 extern int mu_stream_get_transport (mu_stream_t stream, mu_transport_t *pt);
 
 extern int mu_stream_read        (mu_stream_t, char *, size_t, mu_off_t, size_t *);

@@ -47,7 +47,7 @@ struct _file_stream
 {
   FILE *file;
   mu_off_t offset;
-
+  int tempfile;
   char *filename;
   mu_stream_t cache;
 };
@@ -392,6 +392,22 @@ _file_close (mu_stream_t stream)
 }
 
 static int
+_temp_file_open (mu_stream_t stream)
+{
+  struct _file_stream *fs = mu_stream_get_owner (stream);
+  int fd;
+
+  fd = mu_tempfile (fs->filename, NULL);
+  if (fd == -1)
+    return errno;
+  fs->file = fdopen (fd, "r+b");
+  if (fs->file == NULL)
+    return errno;
+
+  return 0;
+}
+
+static int
 _file_open (mu_stream_t stream)
 {
   struct _file_stream *fs = mu_stream_get_owner (stream);
@@ -550,6 +566,53 @@ mu_file_stream_create (mu_stream_t *stream, const char* filename, int flags)
 }
 
 int
+mu_temp_file_stream_create (mu_stream_t *stream, const char *dir)
+{
+  struct _file_stream *fs;
+  int ret;
+
+  if (stream == NULL)
+    return MU_ERR_OUT_PTR_NULL;
+
+  fs = calloc (1, sizeof (struct _file_stream));
+  if (fs == NULL)
+    return ENOMEM;
+  fs->tempfile = 1;
+
+  if (!dir)
+    fs->filename = dir;
+  else if ((fs->filename = strdup(dir)) == NULL)
+    {
+      free (fs);
+      return ENOMEM;
+    }
+  
+  ret = mu_stream_create (stream,
+			  MU_STREAM_RDWR|MU_STREAM_CREAT|MU_STREAM_NO_CHECK,
+			  fs);
+  if (ret != 0)
+    {
+      free (fs);
+      return ret;
+    }
+
+  mu_stream_set_open (*stream, _temp_file_open, fs);
+  mu_stream_set_close (*stream, _file_close, fs);
+  mu_stream_set_get_transport2 (*stream, _file_get_transport2, fs);
+  mu_stream_set_read (*stream, _file_read, fs);
+  mu_stream_set_readline (*stream, _file_readline, fs);
+  mu_stream_set_write (*stream, _file_write, fs);
+  mu_stream_set_truncate (*stream, _file_truncate, fs);
+  mu_stream_set_size (*stream, _file_size, fs);
+  mu_stream_set_flush (*stream, _file_flush, fs);
+  mu_stream_set_destroy (*stream, _file_destroy, fs);
+  mu_stream_set_strerror (*stream, _file_strerror, fs);
+  mu_stream_set_wait (*stream, _file_wait, fs);
+  
+  return 0;
+}
+
+int
 mu_stdio_stream_create (mu_stream_t *stream, FILE *file, int flags)
 {
   struct _file_stream *fs;