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(_("One or more filenames are not encoded with the preferred locale character set.\n"));
  80         g_string_append_printf(string, _("Operations on, and display of these files with %s may not succeed.\n"), PACKAGE);
  81         g_string_append(string, "\n");
  82         g_string_append(string, _("If your filenames are not encoded in utf-8, try setting the environment variable G_BROKEN_FILENAMES=1\n"));
  83         if (bf)
  84                 g_string_append_printf(string, _("It appears G_BROKEN_FILENAMES is set to %s\n"), bf);
  85         else
  86                 g_string_append(string, _("It appears G_BROKEN_FILENAMES is not set\n"));
  87         g_string_append(string, "\n");
  88         g_string_append_printf(string, _("The locale appears to be set to \"%s\"\n(set by the LANG environment variable)\n"), (lc) ? lc : "undefined");
  89         if (lc && (strstr(lc, "UTF-8") || strstr(lc, "utf-8")))
  90                 {
  91                 gchar *name;
  92                 name = g_convert(path, -1, "UTF-8", "ISO-8859-1", nullptr, nullptr, nullptr);
  93                 string = g_string_append(string, _("\nPreferred encoding appears to be UTF-8, however the file:\n"));
  94                 g_string_append_printf(string, "\"%s\"\n", (name) ? name : _("[name not displayable]"));
  95
  96                 if (g_utf8_validate(path, -1, nullptr))
  97                         g_string_append_printf(string, _("\"%s\" is encoded in valid UTF-8."), (name) ? name : _("[name not displayable]"));
  98                 else
  99                         g_string_append_printf(string, _("\"%s\" is not encoded in valid UTF-8."), (name) ? name : _("[name not displayable]"));
 100                 g_string_append(string, "\n");
 101                 g_free(name);
 102                 }
 103
 104         gd = generic_dialog_new(_("Filename encoding locale mismatch"),
 105                                 "locale warning", nullptr, TRUE, nullptr, nullptr);
 106         generic_dialog_add_button(gd, GQ_ICON_CLOSE, _("Close"), nullptr, TRUE);
 107
 108         generic_dialog_add_message(gd, GQ_ICON_DIALOG_WARNING,
 109                                    _("Filename encoding locale mismatch"), string->str, TRUE);
 110
 111         gtk_widget_show(gd->dialog);
 112
 113         g_string_free(string, TRUE);
 114 }
 115
 116 #if GQ_DEBUG_PATH_UTF8
 117 gchar *path_to_utf8_debug(const gchar *path, const gchar *file, gint line)
 118 #else
 119 gchar *path_to_utf8(const gchar *path)
 120 #endif
 121 {
 122         gchar *utf8;
 123         GError *error = nullptr;
 124
 125         if (!path) return nullptr;
 126
 127         utf8 = g_filename_to_utf8(path, -1, nullptr, nullptr, &error);
 128         if (error)
 129                 {
 130 #if GQ_DEBUG_PATH_UTF8
 131                 log_printf("%s:%d: Unable to convert filename to UTF-8:\n%s\n%s\n", file, line, path, error->message);
 132 #else
 133                 log_printf("Unable to convert filename to UTF-8:\n%s\n%s\n", path, error->message);
 134 #endif
 135                 g_error_free(error);
 136                 encoding_dialog(path);
 137                 }
 138         if (!utf8)
 139                 {
 140                 /* just let it through, but bad things may happen */
 141                 utf8 = g_strdup(path);
 142                 }
 143
 144         return utf8;
 145 }
 146
 147 #if GQ_DEBUG_PATH_UTF8
 148 gchar *path_from_utf8_debug(const gchar *utf8, const gchar *file, gint line)
 149 #else
 150 gchar *path_from_utf8(const gchar *utf8)
 151 #endif
 152 {
 153         gchar *path;
 154         GError *error = nullptr;
 155
 156         if (!utf8) return nullptr;
 157
 158         path = g_filename_from_utf8(utf8, -1, nullptr, nullptr, &error);
 159         if (error)
 160                 {
 161 #if GQ_DEBUG_PATH_UTF8
 162                 log_printf("%s:%d: Unable to convert filename to locale from UTF-8:\n%s\n%s\n", file, line, utf8, error->message);
 163 #else
 164                 log_printf("Unable to convert filename to locale from UTF-8:\n%s\n%s\n", utf8, error->message);
 165 #endif
 166                 g_error_free(error);
 167                 }
 168         if (!path)
 169                 {
 170                 /* if invalid UTF-8, text probably still in original form, so just copy it */
 171                 path = g_strdup(utf8);
 172                 }
 173
 174         return path;
 175 }
 176
 177 /* first we try the HOME environment var, if that doesn't work, we try g_get_homedir(). */
 178 const gchar *homedir()
 179 {
 180         static gchar *home = nullptr;
 181
 182         if (!home)
 183                 home = path_to_utf8(getenv("HOME"));
 184
 185         if (!home)
 186                 home = path_to_utf8(g_get_home_dir());
 187
 188         DEBUG_1("Home directory: %s", home);
 189
 190         return home;
 191 }
 192
 193 static gchar *xdg_dir_get(const gchar *key, const gchar *fallback)
 194 {
 195         gchar *dir = getenv(key);
 196
 197         if (!dir || dir[0] == '\0')
 198                 {
 199                 return g_build_filename(homedir(), fallback, NULL);
 200                 }
 201
 202         DEBUG_1("Got xdg %s: %s", key, dir);
 203
 204         return path_to_utf8(dir);
 205 }
 206
 207 const gchar *xdg_data_home_get()
 208 {
 209         static const gchar *xdg_data_home = nullptr;
 210
 211         if (xdg_data_home) return xdg_data_home;
 212
 213         xdg_data_home = xdg_dir_get("XDG_DATA_HOME", ".local/share");
 214
 215         return xdg_data_home;
 216 }
 217
 218 const gchar *xdg_config_home_get()
 219 {
 220         static const gchar *xdg_config_home = nullptr;
 221
 222         if (xdg_config_home) return xdg_config_home;
 223
 224         xdg_config_home = xdg_dir_get("XDG_CONFIG_HOME", ".config");
 225
 226         return xdg_config_home;
 227 }
 228
 229 const gchar *xdg_cache_home_get()
 230 {
 231         static const gchar *xdg_cache_home = nullptr;
 232
 233         if (xdg_cache_home) return xdg_cache_home;
 234
 235         xdg_cache_home = xdg_dir_get("XDG_CACHE_HOME", ".cache");
 236
 237         return xdg_cache_home;
 238 }
 239
 240 const gchar *get_rc_dir()
 241 {
 242         static gchar *rc_dir = nullptr;
 243
 244         if (rc_dir) return rc_dir;
 245
 246         if (USE_XDG)
 247                 {
 248                 rc_dir = g_build_filename(xdg_config_home_get(), GQ_APPNAME_LC, NULL);
 249                 }
 250         else
 251                 {
 252                 rc_dir = g_build_filename(homedir(), GQ_RC_DIR, NULL);
 253                 }
 254
 255         return rc_dir;
 256 }
 257
 258 const gchar *get_collections_dir()
 259 {
 260         static gchar *collections_dir = nullptr;
 261
 262         if (collections_dir) return collections_dir;
 263
 264         if (USE_XDG)
 265                 {
 266                 collections_dir = g_build_filename(xdg_data_home_get(), GQ_APPNAME_LC, GQ_COLLECTIONS_DIR, NULL);
 267                 }
 268         else
 269                 {
 270                 collections_dir = g_build_filename(get_rc_dir(), GQ_COLLECTIONS_DIR, NULL);
 271                 }
 272
 273         return collections_dir;
 274 }
 275
 276 const gchar *get_trash_dir()
 277 {
 278         static gchar *trash_dir = nullptr;
 279
 280         if (trash_dir) return trash_dir;
 281
 282         if (USE_XDG)
 283                 {
 284                 trash_dir = g_build_filename(xdg_data_home_get(), GQ_APPNAME_LC, GQ_TRASH_DIR, NULL);
 285                 }
 286         else
 287                 {
 288                 trash_dir = g_build_filename(get_rc_dir(), GQ_TRASH_DIR, NULL);
 289         }
 290
 291         return trash_dir;
 292 }
 293
 294 const gchar *get_window_layouts_dir()
 295 {
 296         static gchar *window_layouts_dir = nullptr;
 297
 298         if (window_layouts_dir) return window_layouts_dir;
 299
 300         if (USE_XDG)
 301                 {
 302                 window_layouts_dir = g_build_filename(xdg_config_home_get(), GQ_APPNAME_LC, GQ_WINDOW_LAYOUTS_DIR, NULL);
 303                 }
 304         else
 305                 {
 306                 window_layouts_dir = g_build_filename(get_rc_dir(), GQ_WINDOW_LAYOUTS_DIR, NULL);
 307                 }
 308
 309         return window_layouts_dir;
 310 }
 311
 312 gboolean stat_utf8(const gchar *s, struct stat *st)
 313 {
 314         gchar *sl;
 315         gboolean ret;
 316
 317         if (!s) return FALSE;
 318         sl = path_from_utf8(s);
 319         ret = (stat(sl, st) == 0);
 320         g_free(sl);
 321
 322         return ret;
 323 }
 324
 325 gboolean lstat_utf8(const gchar *s, struct stat *st)
 326 {
 327         gchar *sl;
 328         gboolean ret;
 329
 330         if (!s) return FALSE;
 331         sl = path_from_utf8(s);
 332         ret = (lstat(sl, st) == 0);
 333         g_free(sl);
 334
 335         return ret;
 336 }
 337
 338 gboolean isname(const gchar *s)
 339 {
 340         struct stat st;
 341
 342         return stat_utf8(s, &st);
 343 }
 344
 345 gboolean isfile(const gchar *s)
 346 {
 347         struct stat st;
 348
 349         return (stat_utf8(s, &st) && S_ISREG(st.st_mode));
 350 }
 351
 352 gboolean isdir(const gchar *s)
 353 {
 354         struct stat st;
 355
 356         return (stat_utf8(s, &st) && S_ISDIR(st.st_mode));
 357 }
 358
 359 gboolean islink(const gchar *s)
 360 {
 361         struct stat st;
 362
 363         return (lstat_utf8(s, &st) && S_ISLNK(st.st_mode));
 364 }
 365
 366 gint64 filesize(const gchar *s)
 367 {
 368         struct stat st;
 369
 370         if (!stat_utf8(s, &st)) return 0;
 371         return st.st_size;
 372 }
 373
 374 time_t filetime(const gchar *s)
 375 {
 376         struct stat st;
 377
 378         if (!stat_utf8(s, &st)) return 0;
 379         return st.st_mtime;
 380 }
 381
 382 gboolean filetime_set(const gchar *s, time_t tval)
 383 {
 384         gboolean ret = FALSE;
 385
 386         if (tval > 0)
 387                 {
 388                 struct utimbuf ut;
 389                 gchar *sl;
 390
 391                 ut.actime = ut.modtime = tval;
 392
 393                 sl = path_from_utf8(s);
 394                 ret = (utime(sl, &ut) == 0);
 395                 g_free(sl);
 396                 }
 397
 398         return ret;
 399 }
 400
 401 gboolean is_readable_file(const gchar *s)
 402 {
 403         if (!s || !s[0] || !isfile(s)) return FALSE;
 404         return access_file(s, R_OK);
 405 }
 406
 407 gboolean access_file(const gchar *s, gint mode)
 408 {
 409         gchar *sl;
 410         gint ret;
 411
 412         if (!s || !s[0]) return FALSE;
 413
 414         sl = path_from_utf8(s);
 415         ret = (access(sl, mode) == 0);
 416         g_free(sl);
 417
 418         return ret;
 419 }
 420
 421 gboolean unlink_file(const gchar *s)
 422 {
 423         gchar *sl;
 424         gboolean ret;
 425
 426         if (!s) return FALSE;
 427
 428         sl = path_from_utf8(s);
 429         ret = (unlink(sl) == 0);
 430         g_free(sl);
 431
 432         return ret;
 433 }
 434
 435 #pragma GCC diagnostic push
 436 #pragma GCC diagnostic ignored "-Wunused-function"
 437 gboolean symlink_utf8_unused(const gchar *source, const gchar *target)
 438 {
 439         gchar *sl;
 440         gchar *tl;
 441         gboolean ret;
 442
 443         if (!source || !target) return FALSE;
 444
 445         sl = path_from_utf8(source);
 446         tl = path_from_utf8(target);
 447
 448         ret = (symlink(sl, tl) == 0);
 449
 450         g_free(sl);
 451         g_free(tl);
 452
 453         return ret;
 454 }
 455 #pragma GCC diagnostic pop
 456
 457 gboolean mkdir_utf8(const gchar *s, gint mode)
 458 {
 459         gchar *sl;
 460         gboolean ret;
 461
 462         if (!s) return FALSE;
 463
 464         sl = path_from_utf8(s);
 465         ret = (mkdir(sl, mode) == 0);
 466         g_free(sl);
 467         return ret;
 468 }
 469
 470 gboolean rmdir_utf8(const gchar *s)
 471 {
 472         gchar *sl;
 473         gboolean ret;
 474
 475         if (!s) return FALSE;
 476
 477         sl = path_from_utf8(s);
 478         ret = (rmdir(sl) == 0);
 479         g_free(sl);
 480
 481         return ret;
 482 }
 483
 484 gboolean copy_file_attributes(const gchar *s, const gchar *t, gint perms, gint mtime)
 485 {
 486         struct stat st;
 487         gchar *sl;
 488         gchar *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;
 674         gchar *tl;
 675         gboolean ret = TRUE;
 676
 677         if (!s || !t) return FALSE;
 678
 679         sl = path_from_utf8(s);
 680         tl = path_from_utf8(t);
 681         if (rename(sl, tl) < 0)
 682                 {
 683                 /* this may have failed because moving a file across filesystems
 684                 was attempted, so try copy and delete instead */
 685                 if (copy_file(s, t))
 686                         {
 687                         if (unlink(sl) < 0)
 688                                 {
 689                                 /* err, now we can't delete the source file so return FALSE */
 690                                 ret = FALSE;
 691                                 }
 692                         }
 693                 else
 694                         {
 695                         ret = FALSE;
 696                         }
 697                 }
 698         g_free(sl);
 699         g_free(tl);
 700
 701         return ret;
 702 }
 703
 704 gboolean rename_file(const gchar *s, const gchar *t)
 705 {
 706         gchar *sl;
 707         gchar *tl;
 708         gboolean ret;
 709
 710         if (!s || !t) return FALSE;
 711
 712         sl = path_from_utf8(s);
 713         tl = path_from_utf8(t);
 714         ret = (rename(sl, tl) == 0);
 715         g_free(sl);
 716         g_free(tl);
 717
 718         return ret;
 719 }
 720
 721 gchar *get_current_dir()
 722 {
 723         gchar *pathl;
 724         gchar *path8;
 725
 726         pathl = g_get_current_dir();
 727         path8 = path_to_utf8(pathl);
 728         g_free(pathl);
 729
 730         return path8;
 731 }
 732
 733 void string_list_free(GList *list)
 734 {
 735         g_list_free_full(list, g_free);
 736 }
 737
 738 GList *string_list_copy(const GList *list)
 739 {
 740         GList *new_list = nullptr;
 741         auto work = const_cast<GList *>(list);
 742
 743         while (work)
 744                 {
 745                 gchar *path;
 746
 747                 path = static_cast<gchar *>(work->data);
 748                 work = work->next;
 749
 750                 new_list = g_list_prepend(new_list, g_strdup(path));
 751                 }
 752
 753         return g_list_reverse(new_list);
 754 }
 755
 756 gchar *unique_filename(const gchar *path, const gchar *ext, const gchar *divider, gboolean pad)
 757 {
 758         gchar *unique;
 759         gint n = 1;
 760
 761         if (!ext) ext = "";
 762         if (!divider) divider = "";
 763
 764         unique = g_strconcat(path, ext, NULL);
 765         while (isname(unique))
 766                 {
 767                 g_free(unique);
 768                 if (pad)
 769                         {
 770                         unique = g_strdup_printf("%s%s%03d%s", path, divider, n, ext);
 771                         }
 772                 else
 773                         {
 774                         unique = g_strdup_printf("%s%s%d%s", path, divider, n, ext);
 775                         }
 776                 n++;
 777                 if (n > 999)
 778                         {
 779                         /* well, we tried */
 780                         g_free(unique);
 781                         return nullptr;
 782                         }
 783                 }
 784
 785         return unique;
 786 }
 787
 788 #pragma GCC diagnostic push
 789 #pragma GCC diagnostic ignored "-Wunused-function"
 790 gchar *unique_filename_simple_unused(const gchar *path)
 791 {
 792         gchar *unique;
 793         const gchar *name;
 794         const gchar *ext;
 795
 796         if (!path) return nullptr;
 797
 798         name = filename_from_path(path);
 799         if (!name) return nullptr;
 800
 801         ext = registered_extension_from_path(name);
 802
 803         if (!ext)
 804                 {
 805                 unique = unique_filename(path, nullptr, "_", TRUE);
 806                 }
 807         else
 808                 {
 809                 gchar *base;
 810
 811                 base = remove_extension_from_path(path);
 812                 unique = unique_filename(base, ext, "_", TRUE);
 813                 g_free(base);
 814                 }
 815
 816         return unique;
 817 }
 818 #pragma GCC diagnostic pop
 819
 820 const gchar *filename_from_path(const gchar *path)
 821 {
 822         const gchar *base;
 823
 824         if (!path) return nullptr;
 825
 826         base = strrchr(path, G_DIR_SEPARATOR);
 827         if (base) return base + 1;
 828
 829         return path;
 830 }
 831
 832 gchar *remove_level_from_path(const gchar *path)
 833 {
 834         const gchar *base;
 835
 836         if (!path) return g_strdup("");
 837
 838         base = strrchr(path, G_DIR_SEPARATOR);
 839         /* Take account of a file being in the root ( / ) folder - ensure the returned value
 840          * is at least one character long */
 841         if (base) return g_strndup(path, (strlen(path)-strlen(base)) == 0 ? 1 : (strlen(path)-strlen(base)));
 842
 843         return g_strdup("");
 844 }
 845
 846 gboolean file_extension_match(const gchar *path, const gchar *ext)
 847 {
 848         gint p;
 849         gint e;
 850
 851         if (!path) return FALSE;
 852         if (!ext) return TRUE;
 853
 854         p = strlen(path);
 855         e = strlen(ext);
 856
 857         /** @FIXME utf8 */
 858         return (p > e && g_ascii_strncasecmp(path + p - e, ext, e) == 0);
 859 }
 860
 861 gchar *remove_extension_from_path(const gchar *path)
 862 {
 863         const gchar *reg_ext;
 864
 865         if (!path) return nullptr;
 866
 867         reg_ext = registered_extension_from_path(path);
 868
 869         return g_strndup(path, strlen(path) - (reg_ext == nullptr ? 0 : strlen(reg_ext)));
 870 }
 871
 872 void parse_out_relatives(gchar *path)
 873 {
 874         gint s;
 875         gint t;
 876
 877         if (!path) return;
 878
 879         s = t = 0;
 880
 881         while (path[s] != '\0')
 882                 {
 883                 if (path[s] == G_DIR_SEPARATOR && path[s+1] == '.')
 884                         {
 885                         /* /. occurrence, let's see more */
 886                         gint p = s + 2;
 887
 888                         if (path[p] == G_DIR_SEPARATOR || path[p] == '\0')
 889                                 {
 890                                 /* /./ or /., just skip this part */
 891                                 s = p;
 892                                 continue;
 893                                 }
 894
 895                         if (path[p] == '.' && (path[p+1] == G_DIR_SEPARATOR || path[p+1] == '\0'))
 896                                 {
 897                                 /* /../ or /.., remove previous part, ie. /a/b/../ becomes /a/ */
 898                                 s = p + 1;
 899                                 if (t > 0) t--;
 900                                 while (path[t] != G_DIR_SEPARATOR && t > 0) t--;
 901                                 continue;
 902                                 }
 903                         }
 904
 905                 if (s != t) path[t] = path[s];
 906                 t++;
 907                 s++;
 908                 }
 909
 910         if (t == 0 && path[t] == G_DIR_SEPARATOR) t++;
 911         if (t > 1 && path[t-1] == G_DIR_SEPARATOR) t--;
 912         path[t] = '\0';
 913 }
 914
 915 gboolean file_in_path(const gchar *name)
 916 {
 917         gchar *path;
 918         gchar *namel;
 919         gint p;
 920         gint l;
 921         gboolean ret = FALSE;
 922
 923         if (!name) return FALSE;
 924         path = g_strdup(getenv("PATH"));
 925         if (!path) return FALSE;
 926         namel = path_from_utf8(name);
 927
 928         p = 0;
 929         l = strlen(path);
 930         while (p < l && !ret)
 931                 {
 932                 gchar *f;
 933                 gint e = p;
 934                 while (path[e] != ':' && path[e] != '\0') e++;
 935                 path[e] = '\0';
 936                 e++;
 937                 f = g_build_filename(path + p, namel, NULL);
 938                 if (isfile(f)) ret = TRUE;
 939                 g_free(f);
 940                 p = e;
 941                 }
 942         g_free(namel);
 943         g_free(path);
 944
 945         return ret;
 946 }
 947
 948 gboolean recursive_mkdir_if_not_exists(const gchar *path, mode_t mode)
 949 {
 950         if (!path) return FALSE;
 951
 952         if (!isdir(path))
 953                 {
 954                 gchar *npath = g_strdup(path);
 955                 gchar *p = npath;
 956
 957                 while (p[0] != '\0')
 958                         {
 959                         p++;
 960                         if (p[0] == G_DIR_SEPARATOR || p[0] == '\0')
 961                                 {
 962                                 gboolean end = TRUE;
 963
 964                                 if (p[0] != '\0')
 965                                         {
 966                                         p[0] = '\0';
 967                                         end = FALSE;
 968                                         }
 969
 970                                 if (!isdir(npath))
 971                                         {
 972                                         DEBUG_1("creating sub dir:%s", npath);
 973                                         if (!mkdir_utf8(npath, mode))
 974                                                 {
 975                                                 log_printf("create dir failed: %s\n", npath);
 976                                                 g_free(npath);
 977                                                 return FALSE;
 978                                                 }
 979                                         }
 980
 981                                 if (!end) p[0] = G_DIR_SEPARATOR;
 982                                 }
 983                         }
 984                 g_free(npath);
 985                 }
 986
 987         return TRUE;
 988 }
 989
 990 /* does filename utf8 to filesystem encoding first */
 991 gboolean md5_get_digest_from_file_utf8(const gchar *path, guchar digest[16])
 992 {
 993         gboolean success;
 994         gchar *pathl;
 995
 996         pathl = path_from_utf8(path);
 997         success = md5_get_digest_from_file(pathl, digest);
 998         g_free(pathl);
 999
1000         return success;
1001 }
1002
1003
1004 gchar *md5_text_from_file_utf8(const gchar *path, const gchar *error_text)
1005 {
1006         std::unique_ptr<gchar, decltype(&g_free)> pathl{path_from_utf8(path), g_free};
1007
1008         auto md5_text = md5_get_string_from_file(pathl.get());
1009
1010         return md5_text ? md5_text : g_strdup(error_text);
1011 }
1012
1013 /* Download web file
1014  */
1015 struct WebData
1016 {
1017         GenericDialog *gd;
1018         GCancellable *cancellable;
1019         LayoutWindow *lw;
1020
1021         GtkWidget *progress;
1022         GFile *tmp_g_file;
1023         GFile *web_file;
1024 };
1025
1026 static void web_file_async_ready_cb(GObject *source_object, GAsyncResult *res, gpointer data)
1027 {
1028         GError *error = nullptr;
1029         auto web = static_cast<WebData *>(data);
1030         gchar *tmp_filename;
1031
1032         if (!g_cancellable_is_cancelled(web->cancellable))
1033                 {
1034                 generic_dialog_close(web->gd);
1035                 }
1036
1037         if (g_file_copy_finish(G_FILE(source_object), res, &error))
1038                 {
1039                 tmp_filename = g_file_get_parse_name(web->tmp_g_file);
1040                 g_free(tmp_filename);
1041                 layout_set_path(web->lw, g_file_get_path(web->tmp_g_file));
1042                 }
1043         else
1044                 {
1045                 file_util_warning_dialog(_("Web file download failed"), error->message, GQ_ICON_DIALOG_ERROR, nullptr);
1046                 }
1047
1048         g_object_unref(web->tmp_g_file);
1049         web->tmp_g_file = nullptr;
1050         g_object_unref(web->cancellable);
1051         g_object_unref(web->web_file);
1052 }
1053
1054 static void web_file_progress_cb(goffset current_num_bytes, goffset total_num_bytes, gpointer data)
1055 {
1056         auto web = static_cast<WebData *>(data);
1057
1058         if (!g_cancellable_is_cancelled(web->cancellable))
1059                 {
1060                 gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(web->progress), static_cast<gdouble>(current_num_bytes) / total_num_bytes);
1061                 }
1062 }
1063
1064 static void download_web_file_cancel_button_cb(GenericDialog *, gpointer data)
1065 {
1066         auto web = static_cast<WebData *>(data);
1067
1068         g_cancellable_cancel(web->cancellable);
1069 }
1070
1071 gboolean download_web_file(const gchar *text, gboolean minimized, gpointer data)
1072 {
1073         gchar *scheme;
1074         auto lw = static_cast<LayoutWindow *>(data);
1075         gchar *tmp_dir;
1076         GError *error = nullptr;
1077         WebData *web;
1078         gchar *base;
1079         gboolean ret = FALSE;
1080         gchar *message;
1081         FileFormatClass format_class;
1082
1083         scheme = g_uri_parse_scheme(text);
1084         if (g_strcmp0("http", scheme) == 0 || g_strcmp0("https", scheme) == 0)
1085                 {
1086                 format_class = filter_file_get_class(text);
1087
1088                 if (format_class == FORMAT_CLASS_IMAGE || format_class == FORMAT_CLASS_RAWIMAGE || format_class == FORMAT_CLASS_VIDEO || format_class == FORMAT_CLASS_DOCUMENT)
1089                         {
1090                         tmp_dir = g_dir_make_tmp("geeqie_XXXXXX", &error);
1091                         if (error)
1092                                 {
1093                                 log_printf("Error: could not create temporary file n%s\n", error->message);
1094                                 g_error_free(error);
1095                                 error = nullptr;
1096                                 ret = TRUE;
1097                                 }
1098                         else
1099                                 {
1100                                 web = g_new0(WebData, 1);
1101                                 web->lw = lw;
1102
1103                                 web->web_file = g_file_new_for_uri(text);
1104
1105                                 base = g_strdup(g_file_get_basename(web->web_file));
1106                                 web->tmp_g_file = g_file_new_for_path(g_build_filename(tmp_dir, base, NULL));
1107
1108                                 web->gd = generic_dialog_new(_("Download web file"), "download_web_file", nullptr, TRUE, download_web_file_cancel_button_cb, web);
1109
1110                                 message = g_strconcat(_("Downloading "), base, NULL);
1111                                 generic_dialog_add_message(web->gd, GQ_ICON_DIALOG_INFO, message, nullptr, FALSE);
1112
1113                                 web->progress = gtk_progress_bar_new();
1114                                 gq_gtk_box_pack_start(GTK_BOX(web->gd->vbox), web->progress, FALSE, FALSE, 0);
1115                                 gtk_widget_show(web->progress);
1116                                 if (minimized)
1117                                         {
1118                                         gtk_window_iconify(GTK_WINDOW(web->gd->dialog));
1119                                         }
1120
1121                                 gtk_widget_show(web->gd->dialog);
1122                                 web->cancellable = g_cancellable_new();
1123                                 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);
1124
1125                                 g_free(base);
1126                                 g_free(message);
1127                                 ret = TRUE;
1128                                 }
1129                         }
1130                 }
1131         else
1132                 {
1133                 ret = FALSE;
1134                 }
1135
1136         g_free(scheme);
1137         return ret;
1138
1139 }
1140
1141 gboolean rmdir_recursive(GFile *file, GCancellable *cancellable, GError **error)
1142 {
1143         g_autoptr(GFileEnumerator) enumerator = nullptr;
1144
1145         enumerator = g_file_enumerate_children(file, G_FILE_ATTRIBUTE_STANDARD_NAME, G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS, cancellable, nullptr);
1146
1147         while (enumerator != nullptr)
1148                 {
1149                  GFile *child;
1150
1151                 if (!g_file_enumerator_iterate(enumerator, nullptr, &child, cancellable, error))
1152                         return FALSE;
1153                 if (child == nullptr)
1154                         break;
1155                 if (!rmdir_recursive(child, cancellable, error))
1156                         return FALSE;
1157                 }
1158
1159         return g_file_delete(file, cancellable, error);
1160 }
1161
1162 /**
1163  * @brief Retrieves the internal scale factor that maps from window coordinates to the actual device pixels
1164  * @param  -
1165  * @returns scale factor
1166  *
1167  *
1168  */
1169 gint scale_factor()
1170 {
1171         LayoutWindow *lw = nullptr;
1172
1173         layout_valid(&lw);
1174         return gtk_widget_get_scale_factor(lw->window);
1175 }
1176 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */