Pileus Git - grits/blob - src/data.c

   1 #include <config.h>
   2 #include <glib.h>
   3 #include <gio/gio.h>
   4
   5 #include "data.h"
   6
   7 typedef struct {
   8         AWeatherCacheDoneCallback callback;
   9         gchar *src;
  10         gchar *dst;
  11         gchar *user_data;
  12 } cache_file_end_t;
  13
  14 static void cache_file_cb(GObject *source_object, GAsyncResult *res, gpointer _info)
  15 {
  16         cache_file_end_t *info = _info;
  17         GError *error = NULL;
  18         g_file_copy_finish(G_FILE(source_object), res, &error);
  19         if (error) {
  20                 g_message("error copying file ([%s]->[%s]): %s",
  21                         info->src, info->dst, error->message);
  22         } else {
  23                 info->callback(info->dst, info->user_data);
  24         }
  25         g_free(info->src);
  26         g_free(info->dst);
  27         g_free(info);
  28 }
  29
  30 static goffset g_file_get_size(GFile *file)
  31 {
  32         GError *error = NULL;
  33         GFileInfo *info = g_file_query_info(file, G_FILE_ATTRIBUTE_STANDARD_SIZE, 0, NULL, &error);
  34         if (error)
  35                 g_warning("unable to get file size: %s", error->message);
  36         return g_file_info_get_size(info);
  37 }
  38
  39 /**
  40  * Cache a image from Ridge to the local disk
  41  * \param  path  Path to the Ridge file, starting after /ridge/
  42  * \return The local path to the cached image
  43  */
  44 void cache_file(char *base, char *path, AWeatherCacheDoneCallback callback, gpointer user_data)
  45 {
  46         gchar *url   = g_strconcat(base, path, NULL);
  47         gchar *local = g_build_filename(g_get_user_cache_dir(), PACKAGE, path, NULL);
  48         GFile *src = g_file_new_for_uri(url);
  49         GFile *dst = g_file_new_for_path(local);
  50
  51         if (!g_file_test(local, G_FILE_TEST_EXISTS))
  52                 g_message("Caching file: local does not exist - %s", local);
  53         else if (g_file_get_size(src) != g_file_get_size(dst))
  54                 g_message("Caching file: sizes mismatch - %lld != %lld",
  55                                 g_file_get_size(src), g_file_get_size(dst));
  56         else
  57                 return callback(local, user_data);
  58
  59         if (!g_file_test(g_path_get_dirname(local), G_FILE_TEST_IS_DIR))
  60                 g_mkdir_with_parents(g_path_get_dirname(local), 0755);
  61         cache_file_end_t *info = g_malloc0(sizeof(cache_file_end_t));
  62         info->callback  = callback;
  63         info->src       = url;
  64         info->dst       = local;
  65         info->user_data = user_data;
  66         g_file_copy_async(src, dst,
  67                 G_FILE_COPY_OVERWRITE, // GFileCopyFlags flags,
  68                 0,                     // int io_priority,
  69                 NULL,                  // GCancellable *cancellable,
  70                 NULL,                  // GFileProgressCallback progress_callback,
  71                 NULL,                  // gpointer progress_callback_data,
  72                 cache_file_cb,         // GAsyncReadyCallback callback,
  73                 info);                 // gpointer user_data
  74 }