libswfdec/swfdec_load_object.c

   1 /* Swfdec
   2  * Copyright (C) 2007 Benjamin Otte <otte@gnome.org>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor,
  17  * Boston, MA  02110-1301  USA
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #include "config.h"
  22 #endif
  23
  24 #include <string.h>
  25 #include "swfdec_load_object.h"
  26 #include "swfdec_as_strings.h"
  27 #include "swfdec_debug.h"
  28 #include "swfdec_loader_internal.h"
  29 #include "swfdec_loadertarget.h"
  30 #include "swfdec_player_internal.h"
  31
  32 /*** SWFDEC_LOADER_TARGET ***/
  33
  34 static SwfdecPlayer *
  35 swfdec_load_object_loader_target_get_player (SwfdecLoaderTarget *target)
  36 {
  37   return SWFDEC_PLAYER (SWFDEC_AS_OBJECT (target)->context);
  38 }
  39
  40 static void
  41 swfdec_load_object_loader_target_parse (SwfdecLoaderTarget *target,
  42     SwfdecLoader *loader)
  43 {
  44   SwfdecAsValue val;
  45   SwfdecLoadObject *load_object = SWFDEC_LOAD_OBJECT (target);
  46
  47   SWFDEC_AS_VALUE_SET_INT (&val, swfdec_loader_get_loaded (loader));
  48   swfdec_as_object_set_variable_and_flags (load_object->target,
  49       SWFDEC_AS_STR__bytesLoaded, &val, SWFDEC_AS_VARIABLE_HIDDEN);
  50
  51   SWFDEC_AS_VALUE_SET_INT (&val, swfdec_loader_get_size (loader));
  52   swfdec_as_object_set_variable_and_flags (load_object->target,
  53       SWFDEC_AS_STR__bytesTotal, &val, SWFDEC_AS_VARIABLE_HIDDEN);
  54 }
  55
  56 static void
  57 swfdec_load_object_ondata (SwfdecLoadObject *load_object)
  58 {
  59   SwfdecAsValue val;
  60
  61   if (load_object->text) {
  62     SWFDEC_AS_VALUE_SET_STRING (&val,
  63         swfdec_as_context_get_string (load_object->target->context,
  64           load_object->text));
  65   } else {
  66     SWFDEC_AS_VALUE_SET_UNDEFINED (&val);
  67   }
  68   swfdec_as_object_call (load_object->target, SWFDEC_AS_STR_onData, 1, &val,
  69       NULL);
  70 }
  71
  72 static void
  73 swfdec_load_object_loader_target_error (SwfdecLoaderTarget *target,
  74     SwfdecLoader *loader)
  75 {
  76   SwfdecLoadObject *load_object = SWFDEC_LOAD_OBJECT (target);
  77
  78   /* break reference to the loader */
  79   swfdec_loader_set_target (loader, NULL);
  80   load_object->loader = NULL;
  81   g_object_unref (loader);
  82   /* emit onData */
  83   swfdec_load_object_ondata (load_object);
  84 }
  85
  86 static void
  87 swfdec_load_object_loader_target_eof (SwfdecLoaderTarget *target,
  88     SwfdecLoader *loader)
  89 {
  90   SwfdecLoadObject *load_object = SWFDEC_LOAD_OBJECT (target);
  91   guint size;
  92
  93   /* get the text from the loader */
  94   size = swfdec_buffer_queue_get_depth (loader->queue);
  95   load_object->text = g_try_malloc (size + 1);
  96   if (load_object->text) {
  97     SwfdecBuffer *buffer;
  98     guint i = 0;
  99     while ((buffer = swfdec_buffer_queue_pull_buffer (loader->queue))) {
 100       memcpy (load_object->text + i, buffer->data, buffer->length);
 101       i += buffer->length;
 102       swfdec_buffer_unref (buffer);
 103     }
 104     g_assert (i == size);
 105     load_object->text[size] = '\0';
 106     /* FIXME: validate otherwise? */
 107     if (!g_utf8_validate (load_object->text, size, NULL)) {
 108       SWFDEC_ERROR ("downloaded data is not valid utf-8");
 109       g_free (load_object->text);
 110       load_object->text = NULL;
 111     }
 112   } else {
 113     SWFDEC_ERROR ("not enough memory to copy %u bytes", size);
 114   }
 115
 116   /* break reference to the loader */
 117   swfdec_loader_set_target (loader, NULL);
 118   load_object->loader = NULL;
 119   g_object_unref (loader);
 120   /* emit onData */
 121   swfdec_load_object_ondata (load_object);
 122 }
 123
 124 static void
 125 swfdec_load_object_loader_target_init (SwfdecLoaderTargetInterface *iface)
 126 {
 127   iface->get_player = swfdec_load_object_loader_target_get_player;
 128   iface->parse = swfdec_load_object_loader_target_parse;
 129   iface->eof = swfdec_load_object_loader_target_eof;
 130   iface->error = swfdec_load_object_loader_target_error;
 131 }
 132
 133 /*** SWFDEC_LOAD_OBJECT ***/
 134
 135 G_DEFINE_TYPE_WITH_CODE (SwfdecLoadObject, swfdec_load_object, SWFDEC_TYPE_AS_OBJECT,
 136     G_IMPLEMENT_INTERFACE (SWFDEC_TYPE_LOADER_TARGET, swfdec_load_object_loader_target_init))
 137
 138 static void
 139 swfdec_load_object_reset (SwfdecLoadObject *load_object)
 140 {
 141   if (load_object->loader) {
 142     swfdec_loader_set_target (load_object->loader, NULL);
 143     g_object_unref (load_object->loader);
 144     load_object->loader = NULL;
 145   }
 146   g_free (load_object->text);
 147   load_object->text = NULL;
 148 }
 149
 150 static void
 151 swfdec_load_object_mark (SwfdecAsObject *object)
 152 {
 153   swfdec_as_object_mark (SWFDEC_LOAD_OBJECT (object)->target);
 154
 155   SWFDEC_AS_OBJECT_CLASS (swfdec_load_object_parent_class)->mark (object);
 156 }
 157
 158 static void
 159 swfdec_load_object_dispose (GObject *object)
 160 {
 161   SwfdecLoadObject *load_object = SWFDEC_LOAD_OBJECT (object);
 162
 163   swfdec_load_object_reset (load_object);
 164
 165   G_OBJECT_CLASS (swfdec_load_object_parent_class)->dispose (object);
 166 }
 167
 168 static void
 169 swfdec_load_object_class_init (SwfdecLoadObjectClass *klass)
 170 {
 171   GObjectClass *object_class = G_OBJECT_CLASS (klass);
 172   SwfdecAsObjectClass *as_object_class = SWFDEC_AS_OBJECT_CLASS (klass);
 173
 174   object_class->dispose = swfdec_load_object_dispose;
 175
 176   as_object_class->mark = swfdec_load_object_mark;
 177 }
 178
 179 static void
 180 swfdec_load_object_init (SwfdecLoadObject *load_object)
 181 {
 182 }
 183
 184 static void
 185 swfdec_load_object_load (SwfdecLoadObject *load_object, const char *url)
 186 {
 187   SwfdecAsValue val;
 188
 189   g_return_if_fail (SWFDEC_IS_LOAD_OBJECT (load_object));
 190   g_return_if_fail (url != NULL);
 191
 192   swfdec_load_object_reset (load_object);
 193   load_object->loader = swfdec_player_load (
 194       SWFDEC_PLAYER (SWFDEC_AS_OBJECT (load_object)->context), url);
 195   swfdec_loader_set_target (load_object->loader,
 196       SWFDEC_LOADER_TARGET (load_object));
 197   swfdec_loader_set_data_type (load_object->loader, SWFDEC_LOADER_DATA_TEXT);
 198
 199   SWFDEC_AS_VALUE_SET_INT (&val, 0);
 200   swfdec_as_object_set_variable_and_flags (load_object->target,
 201       SWFDEC_AS_STR__bytesLoaded, &val, SWFDEC_AS_VARIABLE_HIDDEN);
 202   SWFDEC_AS_VALUE_SET_UNDEFINED (&val);
 203   swfdec_as_object_set_variable_and_flags (load_object->target,
 204       SWFDEC_AS_STR__bytesTotal, &val, SWFDEC_AS_VARIABLE_HIDDEN);
 205
 206   SWFDEC_AS_VALUE_SET_BOOLEAN (&val, FALSE);
 207   swfdec_as_object_set_variable_and_flags (load_object->target,
 208       SWFDEC_AS_STR_loaded, &val, SWFDEC_AS_VARIABLE_HIDDEN);
 209 }
 210
 211 SwfdecAsObject *
 212 swfdec_load_object_new (SwfdecAsObject *target, const char *url)
 213 {
 214   SwfdecAsObject *load_object;
 215
 216   g_return_val_if_fail (SWFDEC_IS_AS_OBJECT (target), NULL);
 217   g_return_val_if_fail (url != NULL, NULL);
 218
 219   if (!swfdec_as_context_use_mem (target->context, sizeof (SwfdecLoadObject)))
 220     return NULL;
 221   load_object = g_object_new (SWFDEC_TYPE_LOAD_OBJECT, NULL);
 222   swfdec_as_object_add (load_object, target->context,
 223       sizeof (SwfdecLoadObject));
 224
 225   SWFDEC_LOAD_OBJECT (load_object)->target = target;
 226
 227   SWFDEC_PLAYER (target->context)->load_objects =
 228     g_list_append (SWFDEC_PLAYER (target->context)->load_objects, load_object);
 229
 230   swfdec_load_object_load (SWFDEC_LOAD_OBJECT (load_object), url);
 231
 232   return load_object;
 233 }