src/ui-fileops.cc

   1 /*
   2  * Copyright (C) 2006 John Ellis
   3  * Copyright (C) 2008 - 2016 The Geeqie Team
   4  *
   5  * Author: John Ellis
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  */
  21
  22 #include <cstdio>
  23 #include <cstdlib>
  24 #include <cstring>
  25 #include <memory>
  26
  27 #include <unistd.h>
  28 #include <utime.h>
  29
  30 #include "main.h"
  31 #include "ui-fileops.h"
  32
  33 #include "md5-util.h"
  34 #include "filefilter.h"
  35 #include "layout.h"
  36 #include "utilops.h"
  37 #include "secure-save.h"
  38
  39 /*
  40  *-----------------------------------------------------------------------------
  41  * generic file information and manipulation routines (public)
  42  *-----------------------------------------------------------------------------
  43  */
  44
  45
  46
  47 void print_term(gboolean err, const gchar *text_utf8)
  48 {
  49         gchar *text_l;
  50
  51         text_l = g_locale_from_utf8(text_utf8, -1, nullptr, nullptr, nullptr);
  52         if (err)
  53                 {
  54                 fputs((text_l) ? text_l : text_utf8, stderr);
  55                 }
  56         else
  57                 {
  58                 fputs((text_l) ? text_l : text_utf8, stdout);
  59                 }
  60         if(command_line && command_line->ssi)
  61                 secure_fputs(command_line->ssi, (text_l) ? text_l : text_utf8);
  62         g_free(text_l);
  63 }
  64
  65 static void encoding_dialog(const gchar *path)
  66 {
  67         static gboolean warned_user = FALSE;
  68         GenericDialog *gd;
  69         GString *string;
  70         const gchar *lc;
  71         const gchar *bf;
  72
  73         if (warned_user) return;
  74         warned_user = TRUE;
  75
  76         lc = getenv("LANG");
  77         bf = getenv("G_BROKEN_FILENAMES");
  78
  79         string = g_string_new("");
  80         g_string_append(string, _("One or more filenames are not encoded with the preferred locale character set.\n"));
  81         g_string_append_printf(string, _("Operations on, and display of these files with %s may not succeed.\n"), PACKAGE);
  82         g_string_append(string, "\n");
  83         g_string_append(string, _("If your filenames are not encoded in utf-8, try setting the environment variable G_BROKEN_FILENAMES=1\n"));
  84         if (bf)
  85                 g_string_append_printf(string, _("It appears G_BROKEN_FILENAMES is set to %s\n"), bf);
  86         else
  87                 g_string_append(string, _("It appears G_BROKEN_FILENAMES is not set\n"));
  88         g_string_append(string, "\n");
  89         g_string_append_printf(string, _("The locale appears to be set to \"%s\"\n(set by the LANG environment variable)\n"), (lc) ? lc : "undefined");
  90         if (lc && (strstr(lc, "UTF-8") || strstr(lc, "utf-8")))
  91                 {
  92                 gchar *name;
  93                 name = g_convert(path, -1, "UTF-8", "ISO-8859-1", nullptr, nullptr, nullptr);
  94                 string = g_string_append(string, _("\nPreferred encoding appears to be UTF-8, however the file:\n"));
  95                 g_string_append_printf(string, "\"%s\"\n", (name) ? name : _("[name not displayable]"));
  96
  97                 if (g_utf8_validate(path, -1, nullptr))
  98                         g_string_append_printf(string, _("\"%s\" is encoded in valid UTF-8."), (name) ? name : _("[name not displayable]"));
  99                 else
 100                         g_string_append_printf(string, _("\"%s\" is not encoded in valid UTF-8."), (name) ? name : _("[name not displayable]"));
 101                 g_string_append(string, "\n");
 102                 g_free(name);
 103                 }
 104
 105         gd = generic_dialog_new(_("Filename encoding locale mismatch"),
 106                                 "locale warning", nullptr, TRUE, nullptr, nullptr);
 107         generic_dialog_add_button(gd, GQ_ICON_CLOSE, _("Close"), nullptr, TRUE);
 108
 109         generic_dialog_add_message(gd, GQ_ICON_DIALOG_WARNING,
 110                                    _("Filename encoding locale mismatch"), string->str, TRUE);
 111
 112         gtk_widget_show(gd->dialog);
 113
 114         g_string_free(string, TRUE);
 115 }
 116
 117 #if GQ_DEBUG_PATH_UTF8
 118 gchar *path_to_utf8_debug(const gchar *path, const gchar *file, gint line)
 119 #else
 120 gchar *path_to_utf8(const gchar *path)
 121 #endif
 122 {
 123         gchar *utf8;
 124         GError *error = nullptr;
 125
 126         if (!path) return nullptr;
 127
 128         utf8 = g_filename_to_utf8(path, -1, nullptr, nullptr, &error);
 129         if (error)
 130                 {
 131 #if GQ_DEBUG_PATH_UTF8
 132                 log_printf("%s:%d: Unable to convert filename to UTF-8:\n%s\n%s\n", file, line, path, error->message);
 133 #else
 134                 log_printf("Unable to convert filename to UTF-8:\n%s\n%s\n", path, error->message);
 135 #endif
 136                 g_error_free(error);
 137                 encoding_dialog(path);
 138                 }
 139         if (!utf8)
 140                 {
 141                 /* just let it through, but bad things may happen */
 142                 utf8 = g_strdup(path);
 143                 }
 144
 145         return utf8;
 146 }
 147
 148 #if GQ_DEBUG_PATH_UTF8
 149 gchar *path_from_utf8_debug(const gchar *utf8, const gchar *file, gint line)
 150 #else
 151 gchar *path_from_utf8(const gchar *utf8)
 152 #endif
 153 {
 154         gchar *path;
 155         GError *error = nullptr;
 156
 157         if (!utf8) return nullptr;
 158
 159         path = g_filename_from_utf8(utf8, -1, nullptr, nullptr, &error);
 160         if (error)
 161                 {
 162 #if GQ_DEBUG_PATH_UTF8
 163                 log_printf("%s:%d: Unable to convert filename to locale from UTF-8:\n%s\n%s\n", file, line, utf8, error->message);
 164 #else
 165                 log_printf("Unable to convert filename to locale from UTF-8:\n%s\n%s\n", utf8, error->message);
 166 #endif
 167                 g_error_free(error);
 168                 }
 169         if (!path)
 170                 {
 171                 /* if invalid UTF-8, text probably still in original form, so just copy it */
 172                 path = g_strdup(utf8);
 173                 }
 174
 175         return path;
 176 }
 177
 178 /* first we try the HOME environment var, if that doesn't work, we try g_get_homedir(). */
 179 const gchar *homedir()
 180 {
 181         static gchar *home = nullptr;
 182
 183         if (!home)
 184                 home = path_to_utf8(getenv("HOME"));
 185
 186         if (!home)
 187                 home = path_to_utf8(g_get_home_dir());
 188
 189         DEBUG_1("Home directory: %s", home);
 190
 191         return home;
 192 }
 193
 194 static gchar *xdg_dir_get(const gchar *key, const gchar *fallback)
 195 {
 196         gchar *dir = getenv(key);
 197
 198         if (!dir || dir[0] == '\0')
 199                 {
 200                 return g_build_filename(homedir(), fallback, NULL);
 201                 }
 202
 203         DEBUG_1("Got xdg %s: %s", key, dir);
 204
 205         return path_to_utf8(dir);
 206 }
 207
 208 const gchar *xdg_data_home_get()
 209 {
 210         static const gchar *xdg_data_home = nullptr;
 211
 212         if (xdg_data_home) return xdg_data_home;
 213
 214         xdg_data_home = xdg_dir_get("XDG_DATA_HOME", ".local/share");
 215
 216         return xdg_data_home;
 217 }
 218
 219 const gchar *xdg_config_home_get()
 220 {
 221         static const gchar *xdg_config_home = nullptr;
 222
 223         if (xdg_config_home) return xdg_config_home;
 224
 225         xdg_config_home = xdg_dir_get("XDG_CONFIG_HOME", ".config");
 226
 227         return xdg_config_home;
 228 }
 229
 230 const gchar *xdg_cache_home_get()
 231 {
 232         static const gchar *xdg_cache_home = nullptr;
 233
 234         if (xdg_cache_home) return xdg_cache_home;
 235
 236         xdg_cache_home = xdg_dir_get("XDG_CACHE_HOME", ".cache");
 237
 238         return xdg_cache_home;
 239 }
 240
 241 const gchar *get_rc_dir()
 242 {
 243         static gchar *rc_dir = nullptr;
 244
 245         if (rc_dir) return rc_dir;
 246
 247         if (USE_XDG)
 248                 {
 249                 rc_dir = g_build_filename(xdg_config_home_get(), GQ_APPNAME_LC, NULL);
 250                 }
 251         else
 252                 {
 253                 rc_dir = g_build_filename(homedir(), GQ_RC_DIR, NULL);
 254                 }
 255
 256         return rc_dir;
 257 }
 258
 259 const gchar *get_collections_dir()
 260 {
 261         static gchar *collections_dir = nullptr;
 262
 263         if (collections_dir) return collections_dir;
 264
 265         if (USE_XDG)
 266                 {
 267                 collections_dir = g_build_filename(xdg_data_home_get(), GQ_APPNAME_LC, GQ_COLLECTIONS_DIR, NULL);
 268                 }
 269         else
 270                 {
 271                 collections_dir = g_build_filename(get_rc_dir(), GQ_COLLECTIONS_DIR, NULL);
 272                 }
 273
 274         return collections_dir;
 275 }
 276
 277 const gchar *get_trash_dir()
 278 {
 279         static gchar *trash_dir = nullptr;
 280
 281         if (trash_dir) return trash_dir;
 282
 283         if (USE_XDG)
 284                 {
 285                 trash_dir = g_build_filename(xdg_data_home_get(), GQ_APPNAME_LC, GQ_TRASH_DIR, NULL);
 286                 }
 287         else
 288                 {
 289                 trash_dir = g_build_filename(get_rc_dir(), GQ_TRASH_DIR, NULL);
 290         }
 291
 292         return trash_dir;
 293 }
 294
 295 const gchar *get_window_layouts_dir()
 296 {
 297         static gchar *window_layouts_dir = nullptr;
 298
 299         if (window_layouts_dir) return window_layouts_dir;
 300
 301         if (USE_XDG)
 302                 {
 303                 window_layouts_dir = g_build_filename(xdg_config_home_get(), GQ_APPNAME_LC, GQ_WINDOW_LAYOUTS_DIR, NULL);
 304                 }
 305         else
 306                 {
 307                 window_layouts_dir = g_build_filename(get_rc_dir(), GQ_WINDOW_LAYOUTS_DIR, NULL);
 308                 }
 309
 310         return window_layouts_dir;
 311 }
 312
 313 gboolean stat_utf8(const gchar *s, struct stat *st)
 314 {
 315         gchar *sl;
 316         gboolean ret;
 317
 318         if (!s) return FALSE;
 319         sl = path_from_utf8(s);
 320         ret = (stat(sl, st) == 0);
 321         g_free(sl);
 322
 323         return ret;
 324 }
 325
 326 gboolean lstat_utf8(const gchar *s, struct stat *st)
 327 {
 328         gchar *sl;
 329         gboolean ret;
 330
 331         if (!s) return FALSE;
 332         sl = path_from_utf8(s);
 333         ret = (lstat(sl, st) == 0);
 334         g_free(sl);
 335
 336         return ret;
 337 }
 338
 339 gboolean isname(const gchar *s)
 340 {
 341         struct stat st;
 342
 343         return stat_utf8(s, &st);
 344 }
 345
 346 gboolean isfile(const gchar *s)
 347 {
 348         struct stat st;
 349
 350         return (stat_utf8(s, &st) && S_ISREG(st.st_mode));
 351 }
 352
 353 gboolean isdir(const gchar *s)
 354 {
 355         struct stat st;
 356
 357         return (stat_utf8(s, &st) && S_ISDIR(st.st_mode));
 358 }
 359
 360 gboolean islink(const gchar *s)
 361 {
 362         struct stat st;
 363
 364         return (lstat_utf8(s, &st) && S_ISLNK(st.st_mode));
 365 }
 366
 367 gint64 filesize(const gchar *s)
 368 {
 369         struct stat st;
 370
 371         if (!stat_utf8(s, &st)) return 0;
 372         return st.st_size;
 373 }
 374
 375 time_t filetime(const gchar *s)
 376 {
 377         struct stat st;
 378
 379         if (!stat_utf8(s, &st)) return 0;
 380         return st.st_mtime;
 381 }
 382
 383 gboolean filetime_set(const gchar *s, time_t tval)
 384 {
 385         gboolean ret = FALSE;
 386
 387         if (tval > 0)
 388                 {
 389                 struct utimbuf ut;
 390                 gchar *sl;
 391
 392                 ut.actime = ut.modtime = tval;
 393
 394                 sl = path_from_utf8(s);
 395                 ret = (utime(sl, &ut) == 0);
 396                 g_free(sl);
 397                 }
 398
 399         return ret;
 400 }
 401
 402 gboolean is_readable_file(const gchar *s)
 403 {
 404         if (!s || !s[0] || !isfile(s)) return FALSE;
 405         return access_file(s, R_OK);
 406 }
 407
 408 gboolean access_file(const gchar *s, gint mode)
 409 {
 410         gchar *sl;
 411         gint ret;
 412
 413         if (!s || !s[0]) return FALSE;
 414
 415         sl = path_from_utf8(s);
 416         ret = (access(sl, mode) == 0);
 417         g_free(sl);
 418
 419         return ret;
 420 }
 421
 422 gboolean unlink_file(const gchar *s)
 423 {
 424         gchar *sl;
 425         gboolean ret;
 426
 427         if (!s) return FALSE;
 428
 429         sl = path_from_utf8(s);
 430         ret = (unlink(sl) == 0);
 431         g_free(sl);
 432
 433         return ret;
 434 }
 435
 436 #pragma GCC diagnostic push
 437 #pragma GCC diagnostic ignored "-Wunused-function"
 438 gboolean symlink_utf8_unused(const gchar *source, const gchar *target)
 439 {
 440         gchar *sl;
 441         gchar *tl;
 442         gboolean ret;
 443
 444         if (!source || !target) return FALSE;
 445
 446         sl = path_from_utf8(source);
 447         tl = path_from_utf8(target);
 448
 449         ret = (symlink(sl, tl) == 0);
 450
 451         g_free(sl);
 452         g_free(tl);
 453
 454         return ret;
 455 }
 456 #pragma GCC diagnostic pop
 457
 458 gboolean mkdir_utf8(const gchar *s, gint mode)
 459 {
 460         gchar *sl;
 461         gboolean ret;
 462
 463         if (!s) return FALSE;
 464
 465         sl = path_from_utf8(s);
 466         ret = (mkdir(sl, mode) == 0);
 467         g_free(sl);
 468         return ret;
 469 }
 470
 471 gboolean rmdir_utf8(const gchar *s)
 472 {
 473         gchar *sl;
 474         gboolean ret;
 475
 476         if (!s) return FALSE;
 477
 478         sl = path_from_utf8(s);
 479         ret = (rmdir(sl) == 0);
 480         g_free(sl);
 481
 482         return ret;
 483 }
 484
 485 gboolean copy_file_attributes(const gchar *s, const gchar *t, gint perms, gint mtime)
 486 {
 487         struct stat st;
 488         gchar *sl, *tl;
 489         gboolean ret = FALSE;
 490
 491         if (!s || !t) return FALSE;
 492
 493         sl = path_from_utf8(s);
 494         tl = path_from_utf8(t);
 495
 496         if (stat(sl, &st) == 0)
 497                 {
 498                 struct utimbuf tb;
 499
 500                 ret = TRUE;
 501
 502                 /* set the dest file attributes to that of source (ignoring errors) */
 503
 504                 if (perms)
 505                         {
 506                         ret = chown(tl, st.st_uid, st.st_gid);
 507                         /* Ignores chown errors, while still doing chown
 508                            (so root still can copy files preserving ownership) */
 509                         ret = TRUE;
 510                         if (chmod(tl, st.st_mode) < 0) {
 511                             struct stat st2;
 512                             if (stat(tl, &st2) != 0 || st2.st_mode != st.st_mode) {
 513                                 ret = FALSE;
 514                             }
 515                         }
 516                         }
 517
 518                 tb.actime = st.st_atime;
 519                 tb.modtime = st.st_mtime;
 520                 if (mtime && utime(tl, &tb) < 0) ret = FALSE;
 521                 }
 522
 523         g_free(sl);
 524         g_free(tl);
 525
 526         return ret;
 527 }
 528
 529 /* paths are in filesystem encoding */
 530 static gboolean hard_linked(const gchar *a, const gchar *b)
 531 {
 532         struct stat sta;
 533         struct stat stb;
 534
 535         if (stat(a, &sta) !=  0 || stat(b, &stb) != 0) return FALSE;
 536
 537         return (sta.st_dev == stb.st_dev &&
 538                 sta.st_ino == stb.st_ino);
 539 }
 540
 541 static void fclose_safe(FILE *fp)
 542 {
 543         if (fp) fclose(fp);
 544 }
 545
 546 gboolean copy_file(const gchar *s, const gchar *t)
 547 {
 548         gchar buf[16384];
 549         size_t b;
 550         gint fd = -1;
 551
 552         std::unique_ptr<gchar, decltype(&g_free)> sl{path_from_utf8(s), g_free};
 553         std::unique_ptr<gchar, decltype(&g_free)> tl{path_from_utf8(t), g_free};
 554
 555         if (hard_linked(sl.get(), tl.get()))
 556                 {
 557                 return TRUE;
 558                 }
 559
 560         /* Do not dereference absolute symlinks, but copy them "as is".
 561         * For a relative symlink, we don't know how to properly change it when
 562         * copied/moved to another dir to keep pointing it to same target as
 563         * a relative symlink, so we turn it into absolute symlink using
 564         * realpath() instead. */
 565         auto copy_symlink = [](const gchar *sl, const gchar *tl) -> gboolean
 566                 {
 567                 struct stat st;
 568                 if (!lstat_utf8(sl, &st) && S_ISLNK(st.st_mode))
 569                         {
 570                         return FALSE;
 571                         }
 572
 573                 gchar *link_target;
 574                 ssize_t i;
 575
 576                 link_target = static_cast<gchar *>(g_malloc(st.st_size + 1));
 577                 i = readlink(sl, link_target, st.st_size);
 578                 if (i<0)
 579                         {
 580                         g_free(link_target);
 581                         return FALSE;  // try a "normal" copy
 582                         }
 583                 link_target[st.st_size] = '\0';
 584
 585                 if (link_target[0] != G_DIR_SEPARATOR) // if it is a relative symlink
 586                         {
 587                         gchar *absolute;
 588
 589                         const gchar *lastslash = strrchr(sl, G_DIR_SEPARATOR);
 590                         gint len = lastslash - sl + 1;
 591
 592                         absolute = static_cast<gchar *>(g_malloc(len + st.st_size + 1));
 593                         strncpy(absolute, sl, len);
 594                         strcpy(absolute + len, link_target);
 595                         g_free(link_target);
 596                         link_target = absolute;
 597
 598                         gchar *realPath;
 599                         realPath = realpath(link_target, nullptr);
 600
 601                         if (realPath != nullptr) // successfully resolved into an absolute path
 602                                 {
 603                                 g_free(link_target);
 604                                 link_target = g_strdup(realPath);
 605                                 g_free(realPath);
 606                                 }
 607                         else                 // could not get absolute path, got some error instead
 608                                 {
 609                                 g_free(link_target);
 610                                 return FALSE;  // so try a "normal" copy
 611                                 }
 612                         }
 613
 614                 if (stat_utf8(tl, &st)) unlink(tl); // first try to remove directory entry in destination directory if such entry exists
 615
 616                 gint success = (symlink(link_target, tl) == 0);
 617                 g_free(link_target);
 618
 619                 return success;
 620                 };
 621
 622         if (copy_symlink(sl.get(), tl.get()))
 623                 {
 624                 return TRUE;
 625                 }
 626
 627         // if symlink did not succeed, continue on to try a copy procedure
 628         std::unique_ptr<FILE, decltype(&fclose_safe)> fi{fopen(sl.get(), "rb"), fclose_safe};
 629         if (!fi)
 630                 {
 631                 return FALSE;
 632                 }
 633
 634         /* First we write to a temporary file, then we rename it on success,
 635            and attributes from original file are copied */
 636         std::unique_ptr<gchar, decltype(&g_free)> randname{g_strconcat(tl.get(), ".tmp_XXXXXX", NULL), g_free};
 637         if (!randname)
 638                 {
 639                 return FALSE;
 640                 }
 641
 642         fd = g_mkstemp(randname.get());
 643         if (fd == -1)
 644                 {
 645                 return FALSE;
 646                 }
 647
 648         std::unique_ptr<FILE, decltype(&fclose_safe)> fo{fdopen(fd, "wb"), fclose_safe};
 649         if (!fo) {
 650                 close(fd);
 651                 return FALSE;
 652         }
 653
 654         while ((b = fread(buf, sizeof(gchar), sizeof(buf), fi.get())) && b != 0)
 655                 {
 656                 if (fwrite(buf, sizeof(gchar), b, fo.get()) != b)
 657                         {
 658                         unlink(randname.get());
 659                         return FALSE;
 660                         }
 661                 }
 662
 663         if (rename(randname.get(), tl.get()) < 0) {
 664                 unlink(randname.get());
 665                 return FALSE;
 666         }
 667
 668         return copy_file_attributes(s, t, TRUE, TRUE);
 669 }
 670
 671 gboolean move_file(const gchar *s, const gchar *t)
 672 {
 673         gchar *sl, *tl;
 674         gboolean ret = TRUE;
 675
 676         if (!s || !t) return FALSE;
 677
 678         sl = path_from_utf8(s);
 679         tl = path_from_utf8(t);
 680         if (rename(sl, tl) < 0)
 681                 {
 682                 /* this may have failed because moving a file across filesystems
 683                 was attempted, so try copy and delete instead */
 684                 if (copy_file(s, t))
 685                         {
 686                         if (unlink(sl) < 0)
 687                                 {
 688                                 /* err, now we can't delete the source file so return FALSE */
 689                                 ret = FALSE;
 690                                 }
 691                         }
 692                 else
 693                         {
 694                         ret = FALSE;
 695                         }
 696                 }
 697         g_free(sl);
 698         g_free(tl);
 699
 700         return ret;
 701 }
 702
 703 gboolean rename_file(const gchar *s, const gchar *t)
 704 {
 705         gchar *sl, *tl;
 706         gboolean ret;
 707
 708         if (!s || !t) return FALSE;
 709
 710         sl = path_from_utf8(s);
 711         tl = path_from_utf8(t);
 712         ret = (rename(sl, tl) == 0);
 713         g_free(sl);
 714         g_free(tl);
 715
 716         return ret;
 717 }
 718
 719 gchar *get_current_dir()
 720 {
 721         gchar *pathl;
 722         gchar *path8;
 723
 724         pathl = g_get_current_dir();
 725         path8 = path_to_utf8(pathl);
 726         g_free(pathl);
 727
 728         return path8;
 729 }
 730
 731 void string_list_free(GList *list)
 732 {
 733         g_list_free_full(list, g_free);
 734 }
 735
 736 GList *string_list_copy(const GList *list)
 737 {
 738         GList *new_list = nullptr;
 739         auto work = const_cast<GList *>(list);
 740
 741         while (work)
 742                 {
 743                 gchar *path;
 744
 745                 path = static_cast<gchar *>(work->data);
 746                 work = work->next;
 747
 748                 new_list = g_list_prepend(new_list, g_strdup(path));
 749                 }
 750
 751         return g_list_reverse(new_list);
 752 }
 753
 754 gchar *unique_filename(const gchar *path, const gchar *ext, const gchar *divider, gboolean pad)
 755 {
 756         gchar *unique;
 757         gint n = 1;
 758
 759         if (!ext) ext = "";
 760         if (!divider) divider = "";
 761
 762         unique = g_strconcat(path, ext, NULL);
 763         while (isname(unique))
 764                 {
 765                 g_free(unique);
 766                 if (pad)
 767                         {
 768                         unique = g_strdup_printf("%s%s%03d%s", path, divider, n, ext);
 769                         }
 770                 else
 771                         {
 772                         unique = g_strdup_printf("%s%s%d%s", path, divider, n, ext);
 773                         }
 774                 n++;
 775                 if (n > 999)
 776                         {
 777                         /* well, we tried */
 778                         g_free(unique);
 779                         return nullptr;
 780                         }
 781                 }
 782
 783         return unique;
 784 }
 785
 786 #pragma GCC diagnostic push
 787 #pragma GCC diagnostic ignored "-Wunused-function"
 788 gchar *unique_filename_simple_unused(const gchar *path)
 789 {
 790         gchar *unique;
 791         const gchar *name;
 792         const gchar *ext;
 793
 794         if (!path) return NULL;
 795
 796         name = filename_from_path(path);
 797         if (!name) return NULL;
 798
 799         ext = registered_extension_from_path(name);
 800
 801         if (!ext)
 802                 {
 803                 unique = unique_filename(path, NULL, "_", TRUE);
 804                 }
 805         else
 806                 {
 807                 gchar *base;
 808
 809                 base = remove_extension_from_path(path);
 810                 unique = unique_filename(base, ext, "_", TRUE);
 811                 g_free(base);
 812                 }
 813
 814         return unique;
 815 }
 816 #pragma GCC diagnostic pop
 817
 818 const gchar *filename_from_path(const gchar *path)
 819 {
 820         const gchar *base;
 821
 822         if (!path) return nullptr;
 823
 824         base = strrchr(path, G_DIR_SEPARATOR);
 825         if (base) return base + 1;
 826
 827         return path;
 828 }
 829
 830 gchar *remove_level_from_path(const gchar *path)
 831 {
 832         const gchar *base;
 833
 834         if (!path) return g_strdup("");
 835
 836         base = strrchr(path, G_DIR_SEPARATOR);
 837         /* Take account of a file being in the root ( / ) folder - ensure the returned value
 838          * is at least one character long */
 839         if (base) return g_strndup(path, (strlen(path)-strlen(base)) == 0 ? 1 : (strlen(path)-strlen(base)));
 840
 841         return g_strdup("");
 842 }
 843
 844 gboolean file_extension_match(const gchar *path, const gchar *ext)
 845 {
 846         gint p;
 847         gint e;
 848
 849         if (!path) return FALSE;
 850         if (!ext) return TRUE;
 851
 852         p = strlen(path);
 853         e = strlen(ext);
 854
 855         /** @FIXME utf8 */
 856         return (p > e && g_ascii_strncasecmp(path + p - e, ext, e) == 0);
 857 }
 858
 859 gchar *remove_extension_from_path(const gchar *path)
 860 {
 861         const gchar *reg_ext;
 862
 863         if (!path) return nullptr;
 864
 865         reg_ext = registered_extension_from_path(path);
 866
 867         return g_strndup(path, strlen(path) - (reg_ext == nullptr ? 0 : strlen(reg_ext)));
 868 }
 869
 870 void parse_out_relatives(gchar *path)
 871 {
 872         gint s, t;
 873
 874         if (!path) return;
 875
 876         s = t = 0;
 877
 878         while (path[s] != '\0')
 879                 {
 880                 if (path[s] == G_DIR_SEPARATOR && path[s+1] == '.')
 881                         {
 882                         /* /. occurrence, let's see more */
 883                         gint p = s + 2;
 884
 885                         if (path[p] == G_DIR_SEPARATOR || path[p] == '\0')
 886                                 {
 887                                 /* /./ or /., just skip this part */
 888                                 s = p;
 889                                 continue;
 890                                 }
 891                         else if (path[p] == '.' && (path[p+1] == G_DIR_SEPARATOR || path[p+1] == '\0'))
 892                                 {
 893                                 /* /../ or /.., remove previous part, ie. /a/b/../ becomes /a/ */
 894                                 s = p + 1;
 895                                 if (t > 0) t--;
 896                                 while (path[t] != G_DIR_SEPARATOR && t > 0) t--;
 897                                 continue;
 898                                 }
 899                         }
 900
 901                 if (s != t) path[t] = path[s];
 902                 t++;
 903                 s++;
 904                 }
 905
 906         if (t == 0 && path[t] == G_DIR_SEPARATOR) t++;
 907         if (t > 1 && path[t-1] == G_DIR_SEPARATOR) t--;
 908         path[t] = '\0';
 909 }
 910
 911 gboolean file_in_path(const gchar *name)
 912 {
 913         gchar *path;
 914         gchar *namel;
 915         gint p, l;
 916         gboolean ret = FALSE;
 917
 918         if (!name) return FALSE;
 919         path = g_strdup(getenv("PATH"));
 920         if (!path) return FALSE;
 921         namel = path_from_utf8(name);
 922
 923         p = 0;
 924         l = strlen(path);
 925         while (p < l && !ret)
 926                 {
 927                 gchar *f;
 928                 gint e = p;
 929                 while (path[e] != ':' && path[e] != '\0') e++;
 930                 path[e] = '\0';
 931                 e++;
 932                 f = g_build_filename(path + p, namel, NULL);
 933                 if (isfile(f)) ret = TRUE;
 934                 g_free(f);
 935                 p = e;
 936                 }
 937         g_free(namel);
 938         g_free(path);
 939
 940         return ret;
 941 }
 942
 943 gboolean recursive_mkdir_if_not_exists(const gchar *path, mode_t mode)
 944 {
 945         if (!path) return FALSE;
 946
 947         if (!isdir(path))
 948                 {
 949                 gchar *npath = g_strdup(path);
 950                 gchar *p = npath;
 951
 952                 while (p[0] != '\0')
 953                         {
 954                         p++;
 955                         if (p[0] == G_DIR_SEPARATOR || p[0] == '\0')
 956                                 {
 957                                 gboolean end = TRUE;
 958
 959                                 if (p[0] != '\0')
 960                                         {
 961                                         p[0] = '\0';
 962                                         end = FALSE;
 963                                         }
 964
 965                                 if (!isdir(npath))
 966                                         {
 967                                         DEBUG_1("creating sub dir:%s", npath);
 968                                         if (!mkdir_utf8(npath, mode))
 969                                                 {
 970                                                 log_printf("create dir failed: %s\n", npath);
 971                                                 g_free(npath);
 972                                                 return FALSE;
 973                                                 }
 974                                         }
 975
 976                                 if (!end) p[0] = G_DIR_SEPARATOR;
 977                                 }
 978                         }
 979                 g_free(npath);
 980                 }
 981
 982         return TRUE;
 983 }
 984
 985 /* does filename utf8 to filesystem encoding first */
 986 gboolean md5_get_digest_from_file_utf8(const gchar *path, guchar digest[16])
 987 {
 988         gboolean success;
 989         gchar *pathl;
 990
 991         pathl = path_from_utf8(path);
 992         success = md5_get_digest_from_file(pathl, digest);
 993         g_free(pathl);
 994
 995         return success;
 996 }
 997
 998
 999 gchar *md5_text_from_file_utf8(const gchar *path, const gchar *error_text)
1000 {
1001         std::unique_ptr<gchar, decltype(&g_free)> pathl{path_from_utf8(path), g_free};
1002
1003         auto md5_text = md5_get_string_from_file(pathl.get());
1004
1005         return md5_text ? md5_text : g_strdup(error_text);
1006 }
1007
1008 /* Download web file
1009  */
1010 struct WebData
1011 {
1012         GenericDialog *gd;
1013         GCancellable *cancellable;
1014         LayoutWindow *lw;
1015
1016         GtkWidget *progress;
1017         GFile *tmp_g_file;
1018         GFile *web_file;
1019 };
1020
1021 static void web_file_async_ready_cb(GObject *source_object, GAsyncResult *res, gpointer data)
1022 {
1023         GError *error = nullptr;
1024         auto web = static_cast<WebData *>(data);
1025         gchar *tmp_filename;
1026
1027         if (!g_cancellable_is_cancelled(web->cancellable))
1028                 {
1029                 generic_dialog_close(web->gd);
1030                 }
1031
1032         if (g_file_copy_finish(G_FILE(source_object), res, &error))
1033                 {
1034                 tmp_filename = g_file_get_parse_name(web->tmp_g_file);
1035                 g_free(tmp_filename);
1036                 layout_set_path(web->lw, g_file_get_path(web->tmp_g_file));
1037                 }
1038         else
1039                 {
1040                 file_util_warning_dialog(_("Web file download failed"), error->message, GQ_ICON_DIALOG_ERROR, nullptr);
1041                 }
1042
1043         g_object_unref(web->tmp_g_file);
1044         web->tmp_g_file = nullptr;
1045         g_object_unref(web->cancellable);
1046         g_object_unref(web->web_file);
1047 }
1048
1049 static void web_file_progress_cb(goffset current_num_bytes, goffset total_num_bytes, gpointer data)
1050 {
1051         auto web = static_cast<WebData *>(data);
1052
1053         if (!g_cancellable_is_cancelled(web->cancellable))
1054                 {
1055                 gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(web->progress), static_cast<gdouble>(current_num_bytes) / total_num_bytes);
1056                 }
1057 }
1058
1059 static void download_web_file_cancel_button_cb(GenericDialog *, gpointer data)
1060 {
1061         auto web = static_cast<WebData *>(data);
1062
1063         g_cancellable_cancel(web->cancellable);
1064 }
1065
1066 gboolean download_web_file(const gchar *text, gboolean minimized, gpointer data)
1067 {
1068         gchar *scheme;
1069         auto lw = static_cast<LayoutWindow *>(data);
1070         gchar *tmp_dir;
1071         GError *error = nullptr;
1072         WebData *web;
1073         gchar *base;
1074         gboolean ret = FALSE;
1075         gchar *message;
1076         FileFormatClass format_class;
1077
1078         scheme = g_uri_parse_scheme(text);
1079         if (g_strcmp0("http", scheme) == 0 || g_strcmp0("https", scheme) == 0)
1080                 {
1081                 format_class = filter_file_get_class(text);
1082
1083                 if (format_class == FORMAT_CLASS_IMAGE || format_class == FORMAT_CLASS_RAWIMAGE || format_class == FORMAT_CLASS_VIDEO || format_class == FORMAT_CLASS_DOCUMENT)
1084                         {
1085                         tmp_dir = g_dir_make_tmp("geeqie_XXXXXX", &error);
1086                         if (error)
1087                                 {
1088                                 log_printf("Error: could not create temporary file n%s\n", error->message);
1089                                 g_error_free(error);
1090                                 error = nullptr;
1091                                 ret = TRUE;
1092                                 }
1093                         else
1094                                 {
1095                                 web = g_new0(WebData, 1);
1096                                 web->lw = lw;
1097
1098                                 web->web_file = g_file_new_for_uri(text);
1099
1100                                 base = g_strdup(g_file_get_basename(web->web_file));
1101                                 web->tmp_g_file = g_file_new_for_path(g_build_filename(tmp_dir, base, NULL));
1102
1103                                 web->gd = generic_dialog_new(_("Download web file"), "download_web_file", nullptr, TRUE, download_web_file_cancel_button_cb, web);
1104
1105                                 message = g_strconcat(_("Downloading "), base, NULL);
1106                                 generic_dialog_add_message(web->gd, GQ_ICON_DIALOG_INFO, message, nullptr, FALSE);
1107
1108                                 web->progress = gtk_progress_bar_new();
1109                                 gtk_box_pack_start(GTK_BOX(web->gd->vbox), web->progress, FALSE, FALSE, 0);
1110                                 gtk_widget_show(web->progress);
1111                                 if (minimized)
1112                                         {
1113                                         gtk_window_iconify(GTK_WINDOW(web->gd->dialog));
1114                                         }
1115
1116                                 gtk_widget_show(web->gd->dialog);
1117                                 web->cancellable = g_cancellable_new();
1118                                 g_file_copy_async(web->web_file, web->tmp_g_file, G_FILE_COPY_OVERWRITE, G_PRIORITY_LOW, web->cancellable, web_file_progress_cb, web, web_file_async_ready_cb, web);
1119
1120                                 g_free(base);
1121                                 g_free(message);
1122                                 ret = TRUE;
1123                                 }
1124                         }
1125                 }
1126         else
1127                 {
1128                 ret = FALSE;
1129                 }
1130
1131         g_free(scheme);
1132         return ret;
1133
1134 }
1135
1136 gboolean rmdir_recursive(GFile *file, GCancellable *cancellable, GError **error)
1137 {
1138         g_autoptr(GFileEnumerator) enumerator = nullptr;
1139
1140         enumerator = g_file_enumerate_children(file, G_FILE_ATTRIBUTE_STANDARD_NAME, G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS, cancellable, nullptr);
1141
1142         while (enumerator != nullptr)
1143                 {
1144                  GFile *child;
1145
1146                 if (!g_file_enumerator_iterate(enumerator, nullptr, &child, cancellable, error))
1147                         return FALSE;
1148                 if (child == nullptr)
1149                         break;
1150                 if (!rmdir_recursive(child, cancellable, error))
1151                         return FALSE;
1152                 }
1153
1154         return g_file_delete(file, cancellable, error);
1155 }
1156
1157 /**
1158  * @brief Retrieves the internal scale factor that maps from window coordinates to the actual device pixels
1159  * @param  -
1160  * @returns scale factor
1161  *
1162  *
1163  */
1164 gint scale_factor()
1165 {
1166         LayoutWindow *lw = nullptr;
1167
1168         layout_valid(&lw);
1169         return gtk_widget_get_scale_factor(lw->window);
1170 }
1171 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */