build: Move sources into src/ again

This is necessary if we want to build when srcdir == builddir,
otherwise we blow up because "ostree" is a source directory and a
binary.

src/libotutil/ot-gio-utils.c

@@ -0,0 +1,178 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*-
+ *
+ * Copyright (C) 2011 Colin Walters <walters@verbum.org>
+ *
+ * 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 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 Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ * Author: Colin Walters <walters@verbum.org>
+ */
+
+#include "config.h"
+
+#include <gio/gio.h>
+#include <gio/gunixinputstream.h>
+
+#include <string.h>
+
+#include "otutil.h"
+
+gboolean
+ot_util_ensure_directory (const char *path, gboolean with_parents, GError **error)
+{
+  GFile *dir;
+  GError *temp_error = NULL;
+  gboolean ret = FALSE;
+
+  dir = g_file_new_for_path (path);
+  if (with_parents)
+    ret = g_file_make_directory_with_parents (dir, NULL, &temp_error);
+  else
+    ret = g_file_make_directory (dir, NULL, &temp_error);
+  if (!ret)
+    {
+      if (!g_error_matches (temp_error, G_IO_ERROR, G_IO_ERROR_EXISTS))
+        {
+          g_propagate_error (error, temp_error);
+          goto out;
+        }
+      else
+        g_clear_error (&temp_error);
+    }
+
+  ret = TRUE;
+ out:
+  g_clear_object (&dir);
+  return ret;
+}
+
+
+char *
+ot_util_get_file_contents_utf8 (const char *path,
+                                GError    **error)
+{
+  GFile *file = NULL;
+  char *ret = NULL;
+
+  file = ot_util_new_file_for_path (path);
+  if (!ot_util_gfile_load_contents_utf8 (file, NULL, &ret, NULL, error))
+    goto out;
+
+ out:
+  g_clear_object (&file);
+  return ret;
+}
+
+gboolean
+ot_util_gfile_load_contents_utf8 (GFile         *file,
+                                  GCancellable  *cancellable,
+                                  char         **contents_out,
+                                  char         **etag_out,
+                                  GError       **error)
+{
+  char *ret_contents = NULL;
+  char *ret_etag = NULL;
+  gsize len;
+  gboolean ret = FALSE;
+
+  if (!g_file_load_contents (file, cancellable, &ret_contents, &len, &ret_etag, error))
+    goto out;
+  if (!g_utf8_validate (ret_contents, len, NULL))
+    {
+      g_set_error (error,
+                   G_IO_ERROR,
+                   G_IO_ERROR_INVALID_DATA,
+                   "Invalid UTF-8");
+      goto out;
+    }
+
+  if (contents_out)
+    *contents_out = ret_contents;
+  else
+    g_free (ret_contents);
+  ret_contents = NULL;
+  if (etag_out)
+    *etag_out = ret_etag;
+  else
+    g_free (ret_etag);
+  ret_etag = NULL;
+  ret = TRUE;
+ out:
+  g_free (ret_contents);
+  g_free (ret_etag);
+  return ret;
+}
+
+GInputStream *
+ot_util_read_file_noatime (GFile *file, GCancellable *cancellable, GError **error)
+{
+  GInputStream *ret = NULL;
+  int fd;
+  int flags = O_RDONLY;
+  char *path = NULL;
+
+  path = g_file_get_path (file);
+#ifdef O_NOATIME
+  flags |= O_NOATIME;
+#endif
+  fd = open (path, flags);
+  if (fd < 0)
+    {
+      ot_util_set_error_from_errno (error, errno);
+      goto out;
+    }
+
+  ret = (GInputStream*)g_unix_input_stream_new (fd, TRUE);
+  
+ out:
+  g_free (path);
+  return ret;
+}
+
+/* Like g_file_new_for_path, but only do local stuff, not GVFS */
+GFile *
+ot_util_new_file_for_path (const char *path)
+{
+  return g_vfs_get_file_for_path (g_vfs_get_local (), path);
+}
+
+const char *
+ot_gfile_get_path_cached (GFile *file)
+{
+  const char *path;
+
+  path = g_object_get_data ((GObject*)file, "ostree-file-path");
+  if (!path)
+    {
+      path = g_file_get_path (file);
+      g_object_set_data_full ((GObject*)file, "ostree-file-path", (char*)path, (GDestroyNotify)g_free);
+    }
+  return path;
+}
+
+
+const char *
+ot_gfile_get_basename_cached (GFile *file)
+{
+  const char *name;
+
+  name = g_object_get_data ((GObject*)file, "ostree-file-name");
+  if (!name)
+    {
+      name = g_file_get_basename (file);
+      g_object_set_data_full ((GObject*)file, "ostree-file-name", (char*)name, (GDestroyNotify)g_free);
+    }
+  return name;
+}