builtin/modmgr.lua

   1 --Minetest
   2 --Copyright (C) 2013 sapier
   3 --
   4 --This program is free software; you can redistribute it and/or modify
   5 --it under the terms of the GNU Lesser General Public License as published by
   6 --the Free Software Foundation; either version 2.1 of the License, or
   7 --(at your option) any later version.
   8 --
   9 --This program 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
  12 --GNU Lesser General Public License for more details.
  13 --
  14 --You should have received a copy of the GNU Lesser General Public License along
  15 --with this program; if not, write to the Free Software Foundation, Inc.,
  16 --51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17
  18 --------------------------------------------------------------------------------
  19 function get_mods(path,retval,modpack)
  20
  21         local mods = engine.get_dirlist(path,true)
  22         for i=1,#mods,1 do
  23                 local toadd = {}
  24                 local modpackfile = nil
  25
  26                 toadd.name              = mods[i]
  27                 toadd.path              = path .. DIR_DELIM .. mods[i] .. DIR_DELIM
  28                 if modpack ~= nil and
  29                         modpack ~= "" then
  30                         toadd.modpack   = modpack
  31                 else
  32                         local filename = path .. DIR_DELIM .. mods[i] .. DIR_DELIM .. "modpack.txt"
  33                         local error = nil
  34                         modpackfile,error = io.open(filename,"r")
  35                 end
  36
  37                 if modpackfile ~= nil then
  38                         modpackfile:close()
  39                         toadd.is_modpack = true
  40                         table.insert(retval,toadd)
  41                         get_mods(path .. DIR_DELIM .. mods[i],retval,mods[i])
  42                 else
  43                         table.insert(retval,toadd)
  44                 end
  45         end
  46 end
  47
  48 --modmanager implementation
  49 modmgr = {}
  50
  51 --------------------------------------------------------------------------------
  52 function modmgr.extract(modfile)
  53         if modfile.type == "zip" then
  54                 local tempfolder = os.tempfolder()
  55
  56                 if tempfolder ~= nil and
  57                         tempfodler ~= "" then
  58                         engine.create_dir(tempfolder)
  59                         engine.extract_zip(modfile.name,tempfolder)
  60                         return tempfolder
  61                 end
  62         end
  63 end
  64
  65 -------------------------------------------------------------------------------
  66 function modmgr.getbasefolder(temppath)
  67
  68         if temppath == nil then
  69                 return {
  70                 type = "invalid",
  71                 path = ""
  72                 }
  73         end
  74
  75         local testfile = io.open(temppath .. DIR_DELIM .. "init.lua","r")
  76         if testfile ~= nil then
  77                 testfile:close()
  78                 return {
  79                                 type="mod",
  80                                 path=temppath
  81                                 }
  82         end
  83
  84         testfile = io.open(temppath .. DIR_DELIM .. "modpack.txt","r")
  85         if testfile ~= nil then
  86                 testfile:close()
  87                 return {
  88                                 type="modpack",
  89                                 path=temppath
  90                                 }
  91         end
  92
  93         local subdirs = engine.get_dirlist(temppath,true)
  94
  95         --only single mod or modpack allowed
  96         if #subdirs ~= 1 then
  97                 return {
  98                         type = "invalid",
  99                         path = ""
 100                         }
 101         end
 102
 103         testfile =
 104         io.open(temppath .. DIR_DELIM .. subdirs[1] ..DIR_DELIM .."init.lua","r")
 105         if testfile ~= nil then
 106                 testfile:close()
 107                 return {
 108                         type="mod",
 109                         path= temppath .. DIR_DELIM .. subdirs[1]
 110                         }
 111         end
 112
 113         testfile =
 114         io.open(temppath .. DIR_DELIM .. subdirs[1] ..DIR_DELIM .."modpack.txt","r")
 115         if testfile ~= nil then
 116                 testfile:close()
 117                 return {
 118                         type="modpack",
 119                         path=temppath ..  DIR_DELIM .. subdirs[1]
 120                         }
 121         end
 122
 123         return {
 124                 type = "invalid",
 125                 path = ""
 126                 }
 127 end
 128
 129 --------------------------------------------------------------------------------
 130 function modmgr.isValidModname(modpath)
 131         if modpath:find("-") ~= nil then
 132                 return false
 133         end
 134
 135         return true
 136 end
 137
 138 --------------------------------------------------------------------------------
 139 function modmgr.parse_register_line(line)
 140         local pos1 = line:find("\"")
 141         local pos2 = nil
 142         if pos1 ~= nil then
 143                 pos2 = line:find("\"",pos1+1)
 144         end
 145
 146         if pos1 ~= nil and pos2 ~= nil then
 147                 local item = line:sub(pos1+1,pos2-1)
 148
 149                 if item ~= nil and
 150                         item ~= "" then
 151                         local pos3 = item:find(":")
 152
 153                         if pos3 ~= nil then
 154                                 local retval = item:sub(1,pos3-1)
 155                                 if retval ~= nil and
 156                                         retval ~= "" then
 157                                         return retval
 158                                 end
 159                         end
 160                 end
 161         end
 162         return nil
 163 end
 164
 165 --------------------------------------------------------------------------------
 166 function modmgr.parse_dofile_line(modpath,line)
 167         local pos1 = line:find("\"")
 168         local pos2 = nil
 169         if pos1 ~= nil then
 170                 pos2 = line:find("\"",pos1+1)
 171         end
 172
 173         if pos1 ~= nil and pos2 ~= nil then
 174                 local filename = line:sub(pos1+1,pos2-1)
 175
 176                 if filename ~= nil and
 177                         filename ~= "" and
 178                         filename:find(".lua") then
 179                         return modmgr.identify_modname(modpath,filename)
 180                 end
 181         end
 182         return nil
 183 end
 184
 185 --------------------------------------------------------------------------------
 186 function modmgr.identify_modname(modpath,filename)
 187         local testfile = io.open(modpath .. DIR_DELIM .. filename,"r")
 188         if testfile ~= nil then
 189                 local line = testfile:read()
 190
 191                 while line~= nil do
 192                         local modname = nil
 193
 194                         if line:find("minetest.register_tool") then
 195                                 modname = modmgr.parse_register_line(line)
 196                         end
 197
 198                         if line:find("minetest.register_craftitem") then
 199                                 modname = modmgr.parse_register_line(line)
 200                         end
 201
 202
 203                         if line:find("minetest.register_node") then
 204                                 modname = modmgr.parse_register_line(line)
 205                         end
 206
 207                         if line:find("dofile") then
 208                                 modname = modmgr.parse_dofile_line(modpath,line)
 209                         end
 210
 211                         if modname ~= nil then
 212                                 testfile:close()
 213                                 return modname
 214                         end
 215
 216                         line = testfile:read()
 217                 end
 218                 testfile:close()
 219         end
 220
 221         return nil
 222 end
 223
 224 --------------------------------------------------------------------------------
 225 function modmgr.tab()
 226
 227         if modmgr.global_mods == nil then
 228                 modmgr.refresh_globals()
 229         end
 230
 231         if modmgr.selected_mod == nil then
 232                 modmgr.selected_mod = 1
 233         end
 234
 235         local retval =
 236                 "vertlabel[0,-0.25;".. fgettext("MODS") .. "]" ..
 237                 "label[0.8,-0.25;".. fgettext("Installed Mods:") .. "]" ..
 238                 "textlist[0.75,0.25;4.5,4.3;modlist;" ..
 239                 modmgr.render_modlist(modmgr.global_mods) ..
 240                 ";" .. modmgr.selected_mod .. "]"
 241
 242         retval = retval ..
 243                 "button[1,4.85;2,0.5;btn_mod_mgr_install_local;".. fgettext("Install") .. "]" ..
 244                 "button[3,4.85;2,0.5;btn_mod_mgr_download;".. fgettext("Download") .. "]"
 245
 246         local selected_mod = nil
 247
 248         if filterlist.size(modmgr.global_mods) >= modmgr.selected_mod then
 249                 selected_mod = filterlist.get_list(modmgr.global_mods)[modmgr.selected_mod]
 250         end
 251
 252         if selected_mod ~= nil then
 253                 if selected_mod.is_modpack then
 254                         retval = retval
 255                         .. "button[10,4.85;2,0.5;btn_mod_mgr_rename_modpack;" ..
 256                                          fgettext("Rename") .. "]"
 257                 else
 258                 --show dependencies
 259                         retval = retval ..
 260                                 "label[6,1.9;".. fgettext("Depends:") .. "]" ..
 261                                 "textlist[6,2.4;5.7,2;deplist;"
 262
 263                         toadd = modmgr.get_dependencies(selected_mod.path)
 264
 265                         retval = retval .. toadd .. ";0;true,false]"
 266
 267                         --TODO read modinfo
 268                 end
 269                 --show delete button
 270                 retval = retval .. "button[8,4.85;2,0.5;btn_mod_mgr_delete_mod;"
 271                                 .. fgettext("Delete") .. "]"
 272         end
 273         return retval
 274 end
 275
 276 --------------------------------------------------------------------------------
 277 function modmgr.dialog_rename_modpack()
 278
 279         local mod = filterlist.get_list(modmgr.modlist)[modmgr.selected_mod]
 280
 281         local retval =
 282                 "label[1.75,1;".. fgettext("Rename Modpack:") .. "]"..
 283                 "field[4.5,1.4;6,0.5;te_modpack_name;;" ..
 284                 mod.name ..
 285                 "]" ..
 286                 "button[5,4.2;2.6,0.5;dlg_rename_modpack_confirm;"..
 287                                 fgettext("Accept") .. "]" ..
 288                 "button[7.5,4.2;2.8,0.5;dlg_rename_modpack_cancel;"..
 289                                 fgettext("Cancel") .. "]"
 290
 291         return retval
 292 end
 293
 294 --------------------------------------------------------------------------------
 295 function modmgr.precheck()
 296
 297         if modmgr.world_config_selected_world == nil then
 298                 modmgr.world_config_selected_world = 1
 299         end
 300
 301         if modmgr.world_config_selected_mod == nil then
 302                 modmgr.world_config_selected_mod = 1
 303         end
 304
 305         if modmgr.hide_gamemods == nil then
 306                 modmgr.hide_gamemods = true
 307         end
 308
 309         if modmgr.hide_modpackcontents == nil then
 310                 modmgr.hide_modpackcontents = true
 311         end
 312 end
 313
 314 --------------------------------------------------------------------------------
 315 function modmgr.render_modlist(render_list)
 316         local retval = ""
 317
 318         if render_list == nil then
 319                 if modmgr.global_mods == nil then
 320                         modmgr.refresh_globals()
 321                 end
 322                 render_list = modmgr.global_mods
 323         end
 324
 325         local list = filterlist.get_list(render_list)
 326         local last_modpack = nil
 327
 328         for i,v in ipairs(list) do
 329                 if retval ~= "" then
 330                         retval = retval ..","
 331                 end
 332
 333                 local color = ""
 334
 335                 if v.is_modpack then
 336                         local rawlist = filterlist.get_raw_list(render_list)
 337
 338                         local all_enabled = true
 339                         for j=1,#rawlist,1 do
 340                                 if rawlist[j].modpack == list[i].name and
 341                                         rawlist[j].enabled ~= true then
 342                                                 all_enabled = false
 343                                                 break
 344                                 end
 345                         end
 346
 347                         if all_enabled == false then
 348                                 color = mt_color_grey
 349                         else
 350                                 color = mt_color_dark_green
 351                         end
 352                 end
 353
 354                 if v.typ == "game_mod" then
 355                         color = mt_color_blue
 356                 else
 357                         if v.enabled then
 358                                 color = mt_color_green
 359                         end
 360                 end
 361
 362                 retval = retval .. color
 363                 if v.modpack  ~= nil then
 364                         retval = retval .. "    "
 365                 end
 366                 retval = retval .. v.name
 367         end
 368
 369         return retval
 370 end
 371
 372 --------------------------------------------------------------------------------
 373 function modmgr.dialog_configure_world()
 374         modmgr.precheck()
 375
 376         local worldspec = engine.get_worlds()[modmgr.world_config_selected_world]
 377         local mod = filterlist.get_list(modmgr.modlist)[modmgr.world_config_selected_mod]
 378
 379         local retval =
 380                 "size[11,6.5]" ..
 381                 "label[0.5,-0.25;" .. fgettext("World:") .. "]" ..
 382                 "label[1.75,-0.25;" .. worldspec.name .. "]"
 383
 384         if modmgr.hide_gamemods then
 385                 retval = retval .. "checkbox[0,5.75;cb_hide_gamemods;" .. fgettext("Hide Game") .. ";true]"
 386         else
 387                 retval = retval .. "checkbox[0,5.75;cb_hide_gamemods;" .. fgettext("Hide Game") .. ";false]"
 388         end
 389
 390         if modmgr.hide_modpackcontents then
 391                 retval = retval .. "checkbox[2,5.75;cb_hide_mpcontent;" .. fgettext("Hide mp content") .. ";true]"
 392         else
 393                 retval = retval .. "checkbox[2,5.75;cb_hide_mpcontent;" .. fgettext("Hide mp content") .. ";false]"
 394         end
 395
 396         if mod == nil then
 397                 mod = {name=""}
 398         end
 399         retval = retval ..
 400                 "label[0,0.45;" .. fgettext("Mod:") .. "]" ..
 401                 "label[0.75,0.45;" .. mod.name .. "]" ..
 402                 "label[0,1;" .. fgettext("Depends:") .. "]" ..
 403                 "textlist[0,1.5;5,4.25;world_config_depends;" ..
 404                 modmgr.get_dependencies(mod.path) .. ";0]" ..
 405                 "button[9.25,6.35;2,0.5;btn_config_world_save;" .. fgettext("Save") .. "]" ..
 406                 "button[7.4,6.35;2,0.5;btn_config_world_cancel;" .. fgettext("Cancel") .. "]"
 407
 408         if mod ~= nil and mod.name ~= "" and mod.typ ~= "game_mod" then
 409                 if mod.is_modpack then
 410                         local rawlist = filterlist.get_raw_list(modmgr.modlist)
 411
 412                         local all_enabled = true
 413                         for j=1,#rawlist,1 do
 414                                 if rawlist[j].modpack == mod.name and
 415                                         rawlist[j].enabled ~= true then
 416                                                 all_enabled = false
 417                                                 break
 418                                 end
 419                         end
 420
 421                         if all_enabled == false then
 422                                 retval = retval .. "button[5.5,-0.125;2,0.5;btn_mp_enable;" .. fgettext("Enable MP") .. "]"
 423                         else
 424                                 retval = retval .. "button[5.5,-0.125;2,0.5;btn_mp_disable;" .. fgettext("Disable MP") .. "]"
 425                         end
 426                 else
 427                         if mod.enabled then
 428                                 retval = retval .. "checkbox[5.5,-0.375;cb_mod_enable;" .. fgettext("enabled") .. ";true]"
 429                         else
 430                                 retval = retval .. "checkbox[5.5,-0.375;cb_mod_enable;" .. fgettext("enabled") .. ";false]"
 431                         end
 432                 end
 433         end
 434
 435         retval = retval ..
 436                 "button[8.5,-0.125;2.5,0.5;btn_all_mods;" .. fgettext("Enable all") .. "]" ..
 437                 "textlist[5.5,0.5;5.5,5.75;world_config_modlist;"
 438
 439         retval = retval .. modmgr.render_modlist(modmgr.modlist)
 440
 441         retval = retval .. ";" .. modmgr.world_config_selected_mod .."]"
 442
 443         return retval
 444 end
 445
 446 --------------------------------------------------------------------------------
 447 function modmgr.handle_buttons(tab,fields)
 448
 449         local retval = nil
 450
 451         if tab == "mod_mgr" then
 452                 retval = modmgr.handle_modmgr_buttons(fields)
 453         end
 454
 455         if tab == "dialog_rename_modpack" then
 456                 retval = modmgr.handle_rename_modpack_buttons(fields)
 457         end
 458
 459         if tab == "dialog_delete_mod" then
 460                 retval = modmgr.handle_delete_mod_buttons(fields)
 461         end
 462
 463         if tab == "dialog_configure_world" then
 464                 retval = modmgr.handle_configure_world_buttons(fields)
 465         end
 466
 467         return retval
 468 end
 469
 470 --------------------------------------------------------------------------------
 471 function modmgr.get_dependencies(modfolder)
 472         local toadd = ""
 473         if modfolder ~= nil then
 474                 local filename = modfolder ..
 475                                         DIR_DELIM .. "depends.txt"
 476
 477                 local dependencyfile = io.open(filename,"r")
 478
 479                 if dependencyfile then
 480                         local dependency = dependencyfile:read("*l")
 481                         while dependency do
 482                                 if toadd ~= "" then
 483                                         toadd = toadd .. ","
 484                                 end
 485                                 toadd = toadd .. dependency
 486                                 dependency = dependencyfile:read()
 487                         end
 488                         dependencyfile:close()
 489                 end
 490         end
 491
 492         return toadd
 493 end
 494
 495
 496 --------------------------------------------------------------------------------
 497 function modmgr.get_worldconfig(worldpath)
 498         local filename = worldpath ..
 499                                 DIR_DELIM .. "world.mt"
 500
 501         local worldfile = Settings(filename)
 502
 503         local worldconfig = {}
 504         worldconfig.global_mods = {}
 505         worldconfig.game_mods = {}
 506
 507         for key,value in pairs(worldfile:to_table()) do
 508                 if key == "gameid" then
 509                         worldconfig.id = value
 510                 else
 511                         worldconfig.global_mods[key] = engine.is_yes(value)
 512                 end
 513         end
 514
 515         --read gamemods
 516         local gamespec = gamemgr.find_by_gameid(worldconfig.id)
 517         gamemgr.get_game_mods(gamespec, worldconfig.game_mods)
 518
 519         return worldconfig
 520 end
 521 --------------------------------------------------------------------------------
 522 function modmgr.handle_modmgr_buttons(fields)
 523         local retval = {
 524                         tab = nil,
 525                         is_dialog = nil,
 526                         show_buttons = nil,
 527                 }
 528
 529         if fields["modlist"] ~= nil then
 530                 local event = explode_textlist_event(fields["modlist"])
 531                 modmgr.selected_mod = event.index
 532         end
 533
 534         if fields["btn_mod_mgr_install_local"] ~= nil then
 535                 engine.show_file_open_dialog("mod_mgt_open_dlg",fgettext("Select Mod File:"))
 536         end
 537
 538         if fields["btn_mod_mgr_download"] ~= nil then
 539                 modstore.update_modlist()
 540                 retval.current_tab = "dialog_modstore_unsorted"
 541                 retval.is_dialog = true
 542                 retval.show_buttons = false
 543                 return retval
 544         end
 545
 546         if fields["btn_mod_mgr_rename_modpack"] ~= nil then
 547                 retval.current_tab = "dialog_rename_modpack"
 548                 retval.is_dialog = true
 549                 retval.show_buttons = false
 550                 return retval
 551         end
 552
 553         if fields["btn_mod_mgr_delete_mod"] ~= nil then
 554                 retval.current_tab = "dialog_delete_mod"
 555                 retval.is_dialog = true
 556                 retval.show_buttons = false
 557                 return retval
 558         end
 559
 560         if fields["mod_mgt_open_dlg_accepted"] ~= nil and
 561                 fields["mod_mgt_open_dlg_accepted"] ~= "" then
 562                 modmgr.installmod(fields["mod_mgt_open_dlg_accepted"],nil)
 563         end
 564
 565         return nil;
 566 end
 567
 568 --------------------------------------------------------------------------------
 569 function modmgr.installmod(modfilename,basename)
 570         local modfile = modmgr.identify_filetype(modfilename)
 571         local modpath = modmgr.extract(modfile)
 572
 573         if modpath == nil then
 574                 gamedata.errormessage = fgettext("Install Mod: file: \"$1\"", modfile.name) ..
 575                         fgettext("\nInstall Mod: unsupported filetype \"$1\"", modfile.type)
 576                 return
 577         end
 578
 579
 580         local basefolder = modmgr.getbasefolder(modpath)
 581
 582         if basefolder.type == "modpack" then
 583                 local clean_path = nil
 584
 585                 if basename ~= nil then
 586                         clean_path = "mp_" .. basename
 587                 end
 588
 589                 if clean_path == nil then
 590                         clean_path = get_last_folder(cleanup_path(basefolder.path))
 591                 end
 592
 593                 if clean_path ~= nil then
 594                         local targetpath = engine.get_modpath() .. DIR_DELIM .. clean_path
 595                         if not engine.copy_dir(basefolder.path,targetpath) then
 596                                 gamedata.errormessage = fgettext("Failed to install $1 to $2", basename, targetpath)
 597                         end
 598                 else
 599                         gamedata.errormessage = fgettext("Install Mod: unable to find suitable foldername for modpack $1", modfilename)
 600                 end
 601         end
 602
 603         if basefolder.type == "mod" then
 604                 local targetfolder = basename
 605
 606                 if targetfolder == nil then
 607                         targetfolder = modmgr.identify_modname(basefolder.path,"init.lua")
 608                 end
 609
 610                 --if heuristic failed try to use current foldername
 611                 if targetfolder == nil then
 612                         targetfolder = get_last_folder(basefolder.path)
 613                 end
 614
 615                 if targetfolder ~= nil and modmgr.isValidModname(targetfolder) then
 616                         local targetpath = engine.get_modpath() .. DIR_DELIM .. targetfolder
 617                         engine.copy_dir(basefolder.path,targetpath)
 618                 else
 619                         gamedata.errormessage = fgettext("Install Mod: unable to find real modname for: $1", modfilename)
 620                 end
 621         end
 622
 623         engine.delete_dir(modpath)
 624
 625         modmgr.refresh_globals()
 626
 627 end
 628
 629 --------------------------------------------------------------------------------
 630 function modmgr.handle_rename_modpack_buttons(fields)
 631
 632         if fields["dlg_rename_modpack_confirm"] ~= nil then
 633                 local mod = filterlist.get_list(modmgr.modlist)[modmgr.selected_mod]
 634                 local oldpath = engine.get_modpath() .. DIR_DELIM .. mod.name
 635                 local targetpath = engine.get_modpath() .. DIR_DELIM .. fields["te_modpack_name"]
 636                 engine.copy_dir(oldpath,targetpath,false)
 637         end
 638
 639         return {
 640                 is_dialog = false,
 641                 show_buttons = true,
 642                 current_tab = engine.setting_get("main_menu_tab")
 643                 }
 644 end
 645 --------------------------------------------------------------------------------
 646 function modmgr.handle_configure_world_buttons(fields)
 647         if fields["world_config_modlist"] ~= nil then
 648                 local event = explode_textlist_event(fields["world_config_modlist"])
 649                 modmgr.world_config_selected_mod = event.index
 650
 651                 if event.typ == "DCL" then
 652                         modmgr.world_config_enable_mod(nil)
 653                 end
 654         end
 655
 656         if fields["key_enter"] ~= nil then
 657                 modmgr.world_config_enable_mod(nil)
 658         end
 659
 660         if fields["cb_mod_enable"] ~= nil then
 661                 local toset = engine.is_yes(fields["cb_mod_enable"])
 662                 modmgr.world_config_enable_mod(toset)
 663         end
 664
 665         if fields["btn_mp_enable"] ~= nil or
 666                 fields["btn_mp_disable"] then
 667                 local toset = (fields["btn_mp_enable"] ~= nil)
 668                 modmgr.world_config_enable_mod(toset)
 669         end
 670
 671         if fields["cb_hide_gamemods"] ~= nil then
 672                 local current = filterlist.get_filtercriteria(modmgr.modlist)
 673
 674                 if current == nil then
 675                         current = {}
 676                 end
 677
 678                 if engine.is_yes(fields["cb_hide_gamemods"]) then
 679                         current.hide_game = true
 680                         modmgr.hide_gamemods = true
 681                 else
 682                         current.hide_game = false
 683                         modmgr.hide_gamemods = false
 684                 end
 685
 686                 filterlist.set_filtercriteria(modmgr.modlist,current)
 687         end
 688
 689                 if fields["cb_hide_mpcontent"] ~= nil then
 690                 local current = filterlist.get_filtercriteria(modmgr.modlist)
 691
 692                 if current == nil then
 693                         current = {}
 694                 end
 695
 696                 if engine.is_yes(fields["cb_hide_mpcontent"]) then
 697                         current.hide_modpackcontents = true
 698                         modmgr.hide_modpackcontents = true
 699                 else
 700                         current.hide_modpackcontents = false
 701                         modmgr.hide_modpackcontents = false
 702                 end
 703
 704                 filterlist.set_filtercriteria(modmgr.modlist,current)
 705         end
 706
 707         if fields["btn_config_world_save"] then
 708                 local worldspec = engine.get_worlds()[modmgr.world_config_selected_world]
 709
 710                 local filename = worldspec.path ..
 711                                 DIR_DELIM .. "world.mt"
 712
 713                 local worldfile = Settings(filename)
 714                 local mods = worldfile:to_table()
 715
 716                 local rawlist = filterlist.get_raw_list(modmgr.modlist)
 717
 718                 local i,mod
 719                 for i,mod in ipairs(rawlist) do
 720                         if not mod.is_modpack and
 721                                         mod.typ ~= "game_mod" then
 722                                 if mod.enabled then
 723                                         worldfile:set("load_mod_"..mod.name, "true")
 724                                 else
 725                                         worldfile:set("load_mod_"..mod.name, "false")
 726                                 end
 727                                 mods["load_mod_"..mod.name] = nil
 728                         end
 729                 end
 730
 731                 -- Remove mods that are not present anymore
 732                 for key,value in pairs(mods) do
 733                         if key:sub(1,9) == "load_mod_" then
 734                                 worldfile:remove(key)
 735                         end
 736                 end
 737
 738                 if not worldfile:write() then
 739                         print("failed to write world config file")
 740                 end
 741
 742                 modmgr.modlist = nil
 743                 modmgr.worldconfig = nil
 744
 745                 return {
 746                         is_dialog = false,
 747                         show_buttons = true,
 748                         current_tab = engine.setting_get("main_menu_tab")
 749                 }
 750         end
 751
 752         if fields["btn_config_world_cancel"] then
 753
 754                 modmgr.worldconfig = nil
 755
 756                 return {
 757                         is_dialog = false,
 758                         show_buttons = true,
 759                         current_tab = engine.setting_get("main_menu_tab")
 760                 }
 761         end
 762
 763         if fields["btn_all_mods"] then
 764                 local list = filterlist.get_raw_list(modmgr.modlist)
 765
 766                 for i=1,#list,1 do
 767                         if list[i].typ ~= "game_mod" and
 768                                 not list[i].is_modpack then
 769                                 list[i].enabled = true
 770                         end
 771                 end
 772         end
 773
 774
 775
 776         return nil
 777 end
 778 --------------------------------------------------------------------------------
 779 function modmgr.world_config_enable_mod(toset)
 780         local mod = filterlist.get_list(modmgr.modlist)
 781                 [engine.get_textlist_index("world_config_modlist")]
 782
 783         if mod.typ == "game_mod" then
 784                 -- game mods can't be enabled or disabled
 785         elseif not mod.is_modpack then
 786                 if toset == nil then
 787                         mod.enabled = not mod.enabled
 788                 else
 789                         mod.enabled = toset
 790                 end
 791         else
 792                 local list = filterlist.get_raw_list(modmgr.modlist)
 793                 for i=1,#list,1 do
 794                         if list[i].modpack == mod.name then
 795                                 if toset == nil then
 796                                         toset = not list[i].enabled
 797                                 end
 798                                 list[i].enabled = toset
 799                         end
 800                 end
 801         end
 802 end
 803 --------------------------------------------------------------------------------
 804 function modmgr.handle_delete_mod_buttons(fields)
 805         local mod = filterlist.get_list(modmgr.global_mods)[modmgr.selected_mod]
 806
 807         if fields["dlg_delete_mod_confirm"] ~= nil then
 808
 809                 if mod.path ~= nil and
 810                         mod.path ~= "" and
 811                         mod.path ~= engine.get_modpath() then
 812                         if not engine.delete_dir(mod.path) then
 813                                 gamedata.errormessage = fgettext("Modmgr: failed to delete \"$1\"", mod.path)
 814                         end
 815                         modmgr.refresh_globals()
 816                 else
 817                         gamedata.errormessage = fgettext("Modmgr: invalid modpath \"$1\"", mod.path)
 818                 end
 819         end
 820
 821         return {
 822                 is_dialog = false,
 823                 show_buttons = true,
 824                 current_tab = engine.setting_get("main_menu_tab")
 825                 }
 826 end
 827
 828 --------------------------------------------------------------------------------
 829 function modmgr.dialog_delete_mod()
 830
 831         local mod = filterlist.get_list(modmgr.global_mods)[modmgr.selected_mod]
 832
 833         local retval =
 834                 "field[1.75,1;10,3;;" .. fgettext("Are you sure you want to delete \"$1\"?", mod.name) ..  ";]"..
 835                 "button[4,4.2;1,0.5;dlg_delete_mod_confirm;" .. fgettext("Yes") .. "]" ..
 836                 "button[6.5,4.2;3,0.5;dlg_delete_mod_cancel;" .. fgettext("No of course not!") .. "]"
 837
 838         return retval
 839 end
 840
 841 --------------------------------------------------------------------------------
 842 function modmgr.preparemodlist(data)
 843         local retval = {}
 844
 845         local global_mods = {}
 846         local game_mods = {}
 847
 848         --read global mods
 849         local modpath = engine.get_modpath()
 850
 851         if modpath ~= nil and
 852                 modpath ~= "" then
 853                 get_mods(modpath,global_mods)
 854         end
 855
 856         for i=1,#global_mods,1 do
 857                 global_mods[i].typ = "global_mod"
 858                 table.insert(retval,global_mods[i])
 859         end
 860
 861         --read game mods
 862         local gamespec = gamemgr.find_by_gameid(data.gameid)
 863         gamemgr.get_game_mods(gamespec, game_mods)
 864
 865         for i=1,#game_mods,1 do
 866                 game_mods[i].typ = "game_mod"
 867                 table.insert(retval,game_mods[i])
 868         end
 869
 870         if data.worldpath == nil then
 871                 return retval
 872         end
 873
 874         --read world mod configuration
 875         local filename = data.worldpath ..
 876                                 DIR_DELIM .. "world.mt"
 877
 878         local worldfile = Settings(filename)
 879
 880         for key,value in pairs(worldfile:to_table()) do
 881                 if key:sub(1, 9) == "load_mod_" then
 882                         key = key:sub(10)
 883                         local element = nil
 884                         for i=1,#retval,1 do
 885                                 if retval[i].name == key then
 886                                         element = retval[i]
 887                                         break
 888                                 end
 889                         end
 890                         if element ~= nil then
 891                                 element.enabled = engine.is_yes(value)
 892                         else
 893                                 print("Mod: " .. key .. " " .. dump(value) .. " but not found")
 894                         end
 895                 end
 896         end
 897
 898         return retval
 899 end
 900
 901 --------------------------------------------------------------------------------
 902 function modmgr.init_worldconfig()
 903         modmgr.precheck()
 904         local worldspec = engine.get_worlds()[modmgr.world_config_selected_world]
 905
 906         if worldspec ~= nil then
 907                 --read worldconfig
 908                 modmgr.worldconfig = modmgr.get_worldconfig(worldspec.path)
 909
 910                 if modmgr.worldconfig.id == nil or
 911                         modmgr.worldconfig.id == "" then
 912                         modmgr.worldconfig = nil
 913                         return false
 914                 end
 915
 916                 modmgr.modlist = filterlist.create(
 917                                                 modmgr.preparemodlist, --refresh
 918                                                 modmgr.comparemod, --compare
 919                                                 function(element,uid) --uid match
 920                                                         if element.name == uid then
 921                                                                 return true
 922                                                         end
 923                                                 end,
 924                                                 function(element,criteria)
 925                                                         if criteria.hide_game and
 926                                                                 element.typ == "game_mod" then
 927                                                                         return false
 928                                                         end
 929
 930                                                         if criteria.hide_modpackcontents and
 931                                                                 element.modpack ~= nil then
 932                                                                         return false
 933                                                                 end
 934                                                         return true
 935                                                 end, --filter
 936                                                 { worldpath= worldspec.path,
 937                                                   gameid = worldspec.gameid }
 938                                         )
 939
 940                 filterlist.set_filtercriteria(modmgr.modlist, {
 941                                                                         hide_game=modmgr.hide_gamemods,
 942                                                                         hide_modpackcontents= modmgr.hide_modpackcontents
 943                                                                         })
 944                 filterlist.add_sort_mechanism(modmgr.modlist, "alphabetic", sort_mod_list)
 945                 filterlist.set_sortmode(modmgr.modlist, "alphabetic")
 946
 947                 return true
 948         end
 949
 950         return false
 951 end
 952
 953 --------------------------------------------------------------------------------
 954 function modmgr.comparemod(elem1,elem2)
 955         if elem1 == nil or elem2 == nil then
 956                 return false
 957         end
 958         if elem1.name ~= elem2.name then
 959                 return false
 960         end
 961         if elem1.is_modpack ~= elem2.is_modpack then
 962                 return false
 963         end
 964         if elem1.typ ~= elem2.typ then
 965                 return false
 966         end
 967         if elem1.modpack ~= elem2.modpack then
 968                 return false
 969         end
 970
 971         if elem1.path ~= elem2.path then
 972                 return false
 973         end
 974
 975         return true
 976 end
 977
 978 --------------------------------------------------------------------------------
 979 function modmgr.gettab(name)
 980         local retval = ""
 981
 982         if name == "mod_mgr" then
 983                 retval = retval .. modmgr.tab()
 984         end
 985
 986         if name == "dialog_rename_modpack" then
 987                 retval = retval .. modmgr.dialog_rename_modpack()
 988         end
 989
 990         if name == "dialog_delete_mod" then
 991                 retval = retval .. modmgr.dialog_delete_mod()
 992         end
 993
 994         if name == "dialog_configure_world" then
 995                 retval = retval .. modmgr.dialog_configure_world()
 996         end
 997
 998         return retval
 999 end
1000
1001 --------------------------------------------------------------------------------
1002 function modmgr.mod_exists(basename)
1003
1004         if modmgr.global_mods == nil then
1005                 modmgr.refresh_globals()
1006         end
1007
1008         if filterlist.raw_index_by_uid(modmgr.global_mods,basename) > 0 then
1009                 return true
1010         end
1011
1012         return false
1013 end
1014
1015 --------------------------------------------------------------------------------
1016 function modmgr.get_global_mod(idx)
1017
1018         if modmgr.global_mods == nil then
1019                 return nil
1020         end
1021
1022         if idx < 1 or idx > filterlist.size(modmgr.global_mods) then
1023                 return nil
1024         end
1025
1026         return filterlist.get_list(modmgr.global_mods)[idx]
1027 end
1028
1029 --------------------------------------------------------------------------------
1030 function modmgr.refresh_globals()
1031         modmgr.global_mods = filterlist.create(
1032                                         modmgr.preparemodlist, --refresh
1033                                         modmgr.comparemod, --compare
1034                                         function(element,uid) --uid match
1035                                                 if element.name == uid then
1036                                                         return true
1037                                                 end
1038                                         end,
1039                                         nil, --filter
1040                                         {}
1041                                         )
1042         filterlist.add_sort_mechanism(modmgr.global_mods, "alphabetic", sort_mod_list)
1043         filterlist.set_sortmode(modmgr.global_mods, "alphabetic")
1044 end
1045
1046 --------------------------------------------------------------------------------
1047 function modmgr.identify_filetype(name)
1048
1049         if name:sub(-3):lower() == "zip" then
1050                 return {
1051                                 name = name,
1052                                 type = "zip"
1053                                 }
1054         end
1055
1056         if name:sub(-6):lower() == "tar.gz" or
1057                 name:sub(-3):lower() == "tgz"then
1058                 return {
1059                                 name = name,
1060                                 type = "tgz"
1061                                 }
1062         end
1063
1064         if name:sub(-6):lower() == "tar.bz2" then
1065                 return {
1066                                 name = name,
1067                                 type = "tbz"
1068                                 }
1069         end
1070
1071         if name:sub(-2):lower() == "7z" then
1072                 return {
1073                                 name = name,
1074                                 type = "7z"
1075                                 }
1076         end
1077
1078         return {
1079                 name = name,
1080                 type = "ukn"
1081         }
1082 end