1 files changed, 113 insertions, 0 deletions
diff --git a/gnuradio-runtime/lib/vmcircbuf_prefs.cc b/gnuradio-runtime/lib/vmcircbuf_prefs.cc
new file mode 100644
index 0000000000..1fa6350385
--- /dev/null
+++ b/gnuradio-runtime/lib/vmcircbuf_prefs.cc
@@ -0,0 +1,113 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2003,2010,2011,2013 Free Software Foundation, Inc.
+ *
+ * This file is part of GNU Radio
+ *
+ * GNU Radio 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 3, or (at your option)
+ * any later version.
+ *
+ * GNU Radio 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 GNU Radio; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "vmcircbuf_prefs.h"
+#include <gnuradio/sys_paths.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <string.h>
+
+#include <boost/filesystem/operations.hpp>
+#include <boost/filesystem/path.hpp>
+namespace fs = boost::filesystem;
+
+namespace gr {
+
+  /*
+   * The simplest thing that could possibly work:
+   *  the key is the filename; the value is the file contents.
+   */
+  static const char *
+  pathname(const char *key)
+  {
+    static fs::path path;
+    path = fs::path(gr::appdata_path()) / ".gnuradio" / "prefs" / key;
+    return path.string().c_str();
+  }
+
+  static void
+  ensure_dir_path()
+  {
+    fs::path path = fs::path(gr::appdata_path()) / ".gnuradio";
+    if(!fs::is_directory(path))
+      fs::create_directory(path);
+
+    path = path / "prefs";
+    if(!fs::is_directory(path))
+      fs::create_directory(path);
+  }
+
+  const char *
+  vmcircbuf_prefs::get(const char *key)
+  {
+    static char buf[1024];
+
+    FILE *fp = fopen(pathname (key), "r");
+    if(fp == 0) {
+      perror(pathname (key));
+      return 0;
+    }
+
+    memset(buf, 0, sizeof (buf));
+    size_t ret = fread(buf, 1, sizeof(buf) - 1, fp);
+    if(ret == 0) {
+      if(ferror(fp) != 0) {
+        perror(pathname (key));
+        fclose(fp);
+        return 0;
+      }
+    }
+    fclose(fp);
+    return buf;
+  }
+
+  void
+  vmcircbuf_prefs::set(const char *key, const char *value)
+  {
+    ensure_dir_path();
+
+    FILE *fp = fopen(pathname(key), "w");
+    if(fp == 0) {
+      perror(pathname (key));
+      return;
+    }
+
+    size_t ret = fwrite(value, 1, strlen(value), fp);
+    if(ret == 0) {
+      if(ferror(fp) != 0) {
+        perror(pathname (key));
+        fclose(fp);
+        return;
+      }
+    }
+    fclose(fp);
+  };
+
+} /* namespace gr */