+/*
+================
+FS_AddPack_Fullpath
+================
+*/
+/*! Adds the given pack to the search path.
+ * The pack type is autodetected by the file extension.
+ *
+ * Returns true if the file was successfully added to the
+ * search path or if it was already included.
+ *
+ * If keep_plain_dirs is set, the pack will be added AFTER the first sequence of
+ * plain directories.
+ *
+ */
+static qboolean FS_AddPack_Fullpath(const char *pakfile, const char *shortname, qboolean *already_loaded, qboolean keep_plain_dirs)
+{
+ searchpath_t *search;
+ pack_t *pak = NULL;
+ const char *ext = FS_FileExtension(pakfile);
+ size_t l;
+
+ for(search = fs_searchpaths; search; search = search->next)
+ {
+ if(search->pack && !strcasecmp(search->pack->filename, pakfile))
+ {
+ if(already_loaded)
+ *already_loaded = true;
+ return true; // already loaded
+ }
+ }
+
+ if(already_loaded)
+ *already_loaded = false;
+
+ if(!strcasecmp(ext, "pk3dir"))
+ pak = FS_LoadPackVirtual (pakfile);
+ else if(!strcasecmp(ext, "pak"))
+ pak = FS_LoadPackPAK (pakfile);
+ else if(!strcasecmp(ext, "pk3"))
+ pak = FS_LoadPackPK3 (pakfile);
+ else if(!strcasecmp(ext, "obb")) // android apk expansion
+ pak = FS_LoadPackPK3 (pakfile);
+ else
+ Con_Printf("\"%s\" does not have a pack extension\n", pakfile);
+
+ if(pak)
+ {
+ strlcpy(pak->shortname, shortname, sizeof(pak->shortname));
+
+ //Con_DPrintf(" Registered pack with short name %s\n", shortname);
+ if(keep_plain_dirs)
+ {
+ // find the first item whose next one is a pack or NULL
+ searchpath_t *insertion_point = 0;
+ if(fs_searchpaths && !fs_searchpaths->pack)
+ {
+ insertion_point = fs_searchpaths;
+ for(;;)
+ {
+ if(!insertion_point->next)
+ break;
+ if(insertion_point->next->pack)
+ break;
+ insertion_point = insertion_point->next;
+ }
+ }
+ // If insertion_point is NULL, this means that either there is no
+ // item in the list yet, or that the very first item is a pack. In
+ // that case, we want to insert at the beginning...
+ if(!insertion_point)
+ {
+ search = (searchpath_t *)Mem_Alloc(fs_mempool, sizeof(searchpath_t));
+ search->next = fs_searchpaths;
+ fs_searchpaths = search;
+ }
+ else
+ // otherwise we want to append directly after insertion_point.
+ {
+ search = (searchpath_t *)Mem_Alloc(fs_mempool, sizeof(searchpath_t));
+ search->next = insertion_point->next;
+ insertion_point->next = search;
+ }
+ }
+ else
+ {
+ search = (searchpath_t *)Mem_Alloc(fs_mempool, sizeof(searchpath_t));
+ search->next = fs_searchpaths;
+ fs_searchpaths = search;
+ }
+ search->pack = pak;
+ if(pak->vpack)
+ {
+ dpsnprintf(search->filename, sizeof(search->filename), "%s/", pakfile);
+ // if shortname ends with "pk3dir", strip that suffix to make it just "pk3"
+ // same goes for the name inside the pack structure
+ l = strlen(pak->shortname);
+ if(l >= 7)
+ if(!strcasecmp(pak->shortname + l - 7, ".pk3dir"))
+ pak->shortname[l - 3] = 0;
+ l = strlen(pak->filename);
+ if(l >= 7)
+ if(!strcasecmp(pak->filename + l - 7, ".pk3dir"))
+ pak->filename[l - 3] = 0;
+ }
+ return true;
+ }
+ else
+ {
+ Con_Printf("unable to load pak \"%s\"\n", pakfile);
+ return false;
+ }
+}
+
+
+/*
+================
+FS_AddPack
+================
+*/
+/*! Adds the given pack to the search path and searches for it in the game path.
+ * The pack type is autodetected by the file extension.
+ *
+ * Returns true if the file was successfully added to the
+ * search path or if it was already included.
+ *
+ * If keep_plain_dirs is set, the pack will be added AFTER the first sequence of
+ * plain directories.
+ */
+qboolean FS_AddPack(const char *pakfile, qboolean *already_loaded, qboolean keep_plain_dirs)
+{
+ char fullpath[MAX_OSPATH];
+ int index;
+ searchpath_t *search;
+
+ if(already_loaded)
+ *already_loaded = false;
+
+ // then find the real name...
+ search = FS_FindFile(pakfile, &index, true);
+ if(!search || search->pack)
+ {
+ Con_Printf("could not find pak \"%s\"\n", pakfile);
+ return false;
+ }
+
+ dpsnprintf(fullpath, sizeof(fullpath), "%s%s", search->filename, pakfile);
+
+ return FS_AddPack_Fullpath(fullpath, pakfile, already_loaded, keep_plain_dirs);
+}
+