src/misc.cc

   1 /*
   2  * Copyright (C) 2008 - 2016 The Geeqie Team
   3  *
   4  * Authors: Vladimir Nadvornik, Laurent Monin
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  */
  20
  21 #include "main.h"
  22 #include "misc.h"
  23
  24 #include "ui-fileops.h"
  25
  26 #include <langinfo.h>
  27
  28 gdouble get_zoom_increment(void)
  29 {
  30         return ((options->image.zoom_increment != 0) ? (gdouble)options->image.zoom_increment / 100.0 : 1.0);
  31 }
  32
  33 gchar *utf8_validate_or_convert(const gchar *text)
  34 {
  35         gint len;
  36
  37         if (!text) return NULL;
  38
  39         len = strlen(text);
  40         if (!g_utf8_validate(text, len, NULL))
  41                 return g_convert(text, len, "UTF-8", "ISO-8859-1", NULL, NULL, NULL);
  42
  43         return g_strdup(text);
  44 }
  45
  46 gint utf8_compare(const gchar *s1, const gchar *s2, gboolean case_sensitive)
  47 {
  48         gchar *s1_key, *s2_key;
  49         gchar *s1_t, *s2_t;
  50         gint ret;
  51
  52         g_assert(g_utf8_validate(s1, -1, NULL));
  53         g_assert(g_utf8_validate(s2, -1, NULL));
  54
  55         if (!case_sensitive)
  56                 {
  57                 s1_t = g_utf8_casefold(s1, -1);
  58                 s2_t = g_utf8_casefold(s2, -1);
  59                 }
  60         else
  61                 {
  62                 s1_t = (gchar *) s1;
  63                 s2_t = (gchar *) s2;
  64                 }
  65
  66         s1_key = g_utf8_collate_key(s1_t, -1);
  67         s2_key = g_utf8_collate_key(s2_t, -1);
  68
  69         ret = strcmp(s1_key, s2_key);
  70
  71         g_free(s1_key);
  72         g_free(s2_key);
  73
  74         if (!case_sensitive)
  75                 {
  76                 g_free(s1_t);
  77                 g_free(s2_t);
  78                 }
  79
  80         return ret;
  81 }
  82
  83 /* Borrowed from gtkfilesystemunix.c */
  84 gchar *expand_tilde(const gchar *filename)
  85 {
  86 #ifndef G_OS_UNIX
  87         return g_strdup(filename);
  88 #else
  89         const gchar *notilde;
  90         const gchar *slash;
  91         const gchar *home;
  92
  93         if (filename[0] != '~')
  94                 return g_strdup(filename);
  95
  96         notilde = filename + 1;
  97         slash = strchr(notilde, G_DIR_SEPARATOR);
  98         if (slash == notilde || !*notilde)
  99                 {
 100                 home = g_get_home_dir();
 101                 if (!home)
 102                         return g_strdup(filename);
 103                 }
 104         else
 105                 {
 106                 gchar *username;
 107                 struct passwd *passwd;
 108
 109                 if (slash)
 110                         username = g_strndup(notilde, slash - notilde);
 111                 else
 112                         username = g_strdup(notilde);
 113
 114                 passwd = getpwnam(username);
 115                 g_free(username);
 116
 117                 if (!passwd)
 118                         return g_strdup(filename);
 119
 120                 home = passwd->pw_dir;
 121                 }
 122
 123         if (slash)
 124                 return g_build_filename(home, G_DIR_SEPARATOR_S, slash + 1, NULL);
 125         else
 126                 return g_build_filename(home, G_DIR_SEPARATOR_S, NULL);
 127 #endif
 128 }
 129
 130 /* Search for latitude/longitude parameters in a string
 131  */
 132
 133 #define GEOCODE_NAME "geocode-parameters.awk"
 134 #define BUFSIZE 128
 135
 136 gchar *decode_geo_script(const gchar *path_dir, const gchar *input_text)
 137 {
 138         gchar *message;
 139         gchar *path = g_build_filename(path_dir, GEOCODE_NAME, NULL);
 140         gchar *cmd = g_strconcat("echo \'", input_text, "\'  | awk -f ", path, NULL);
 141
 142         if (g_file_test(path, G_FILE_TEST_EXISTS))
 143                 {
 144                 gchar buf[BUFSIZE];
 145                 FILE *fp;
 146
 147                 if ((fp = popen(cmd, "r")) == NULL)
 148                         {
 149                         message = g_strconcat("Error: opening pipe\n", input_text, NULL);
 150                         }
 151                 else
 152                         {
 153                         while (fgets(buf, BUFSIZE, fp))
 154                                 {
 155                                 DEBUG_1("Output: %s", buf);
 156                                 }
 157
 158                         message = g_strconcat(buf, NULL);
 159
 160                         if(pclose(fp))
 161                                 {
 162                                 message = g_strconcat("Error: Command not found or exited with error status\n", input_text, NULL);
 163                                 }
 164                         }
 165                 }
 166         else
 167                 {
 168                 message = g_strconcat(input_text, NULL);
 169                 }
 170
 171         g_free(path);
 172         g_free(cmd);
 173         return message;
 174 }
 175
 176 gchar *decode_geo_parameters(const gchar *input_text)
 177 {
 178         gchar *message;
 179         gchar *dir;
 180
 181         message = decode_geo_script(gq_bindir, input_text);
 182         if (strstr(message, "Error"))
 183                 {
 184                 g_free(message);
 185                 dir = g_build_filename(get_rc_dir(), "applications", NULL);
 186                 message = decode_geo_script(dir, input_text);
 187                 g_free(dir);
 188                 }
 189
 190         return message;
 191 }
 192
 193 /* Run a command like system() but may output debug messages. */
 194 int runcmd(const gchar *cmd)
 195 {
 196 #if 1
 197         return system(cmd);
 198         return 0;
 199 #else
 200         /* For debugging purposes */
 201         int retval = -1;
 202         FILE *in;
 203
 204         DEBUG_1("Running command: %s", cmd);
 205
 206         in = popen(cmd, "r");
 207         if (in)
 208                 {
 209                 int status;
 210                 const gchar *msg;
 211                 gchar buf[2048];
 212
 213                 while (fgets(buf, sizeof(buf), in) != NULL )
 214                         {
 215                         DEBUG_1("Output: %s", buf);
 216                         }
 217
 218                 status = pclose(in);
 219
 220                 if (WIFEXITED(status))
 221                         {
 222                         msg = "Command terminated with exit code";
 223                         retval = WEXITSTATUS(status);
 224                         }
 225                 else if (WIFSIGNALED(status))
 226                         {
 227                         msg = "Command was killed by signal";
 228                         retval = WTERMSIG(status);
 229                         }
 230                 else
 231                         {
 232                         msg = "pclose() returned";
 233                         retval = status;
 234                         }
 235
 236                 DEBUG_1("%s : %d\n", msg, retval);
 237         }
 238
 239         return retval;
 240 #endif
 241 }
 242
 243 /**
 244  * @brief Returns integer representing first_day_of_week
 245  * @returns Integer in range 1 to 7
 246  *
 247  * Uses current locale to get first day of week.
 248  * If _NL_TIME_FIRST_WEEKDAY is not available, ISO 8601
 249  * states first day of week is Monday.
 250  * USA, Mexico and Canada (and others) use Sunday as first day of week.
 251  *
 252  * Sunday == 1
 253  */
 254 gint date_get_first_day_of_week()
 255 {
 256 #ifdef HAVE__NL_TIME_FIRST_WEEKDAY
 257         return nl_langinfo(_NL_TIME_FIRST_WEEKDAY)[0];
 258 #else
 259         gchar *dot;
 260         gchar *current_locale;
 261
 262         current_locale = setlocale(LC_ALL, NULL);
 263         dot = strstr(current_locale, ".");
 264         if ((strncmp(dot - 2, "US", 2) == 0) || (strncmp(dot - 2, "MX", 2) == 0) || (strncmp(dot - 2, "CA", 2) == 0))
 265                 {
 266                 return 1;
 267                 }
 268         else
 269                 {
 270                 return 2;
 271                 }
 272 #endif
 273 }
 274
 275 /**
 276  * @brief Get an abbreviated day name from locale
 277  * @param day Integer in range 1 to 7, representing day of week
 278  * @returns String containing abbreviated day name
 279  *
 280  *  Uses current locale to get day name
 281  *
 282  * Sunday == 1
 283  * Result must be freed
 284  */
 285 gchar *date_get_abbreviated_day_name(gint day)
 286 {
 287         gchar *abday = NULL;
 288
 289         switch (day)
 290                 {
 291                 case 1:
 292                 abday = g_strdup(nl_langinfo(ABDAY_1));
 293                 break;
 294                 case 2:
 295                 abday = g_strdup(nl_langinfo(ABDAY_2));
 296                 break;
 297                 case 3:
 298                 abday = g_strdup(nl_langinfo(ABDAY_3));
 299                 break;
 300                 case 4:
 301                 abday = g_strdup(nl_langinfo(ABDAY_4));
 302                 break;
 303                 case 5:
 304                 abday = g_strdup(nl_langinfo(ABDAY_5));
 305                 break;
 306                 case 6:
 307                 abday = g_strdup(nl_langinfo(ABDAY_6));
 308                 break;
 309                 case 7:
 310                 abday = g_strdup(nl_langinfo(ABDAY_7));
 311                 break;
 312                 }
 313
 314         return abday;
 315 }
 316
 317 gchar *convert_rating_to_stars(gint rating)
 318 {
 319         gchar *ret;
 320         GString *str = g_string_new(NULL);
 321
 322         if (rating == -1)
 323                 {
 324                 str = g_string_append_unichar(str, options->star_rating.rejected);
 325                 ret = g_strdup(str->str);
 326                 g_string_free(str, TRUE);
 327                 }
 328         else if (rating > 0 && rating < 6)
 329                 {
 330                 while (rating > 0)
 331                         {
 332                         str = g_string_append_unichar(str, options->star_rating.star);
 333                         rating = rating - 1;
 334                         }
 335                 ret = g_strdup(str->str);
 336                 g_string_free(str, TRUE);
 337                 }
 338         else
 339                 {
 340                 ret = g_strdup("");
 341                 }
 342
 343         return ret;
 344 }
 345
 346 gchar *get_symbolic_link(const gchar *path_utf8)
 347 {
 348         gchar *sl;
 349         struct stat st;
 350         gchar *ret = g_strdup("");
 351
 352         sl = path_from_utf8(path_utf8);
 353
 354         if (lstat(sl, &st) == 0 && S_ISLNK(st.st_mode))
 355                 {
 356                 gchar *buf;
 357                 gint l;
 358
 359                 buf = static_cast<gchar *>(g_malloc(st.st_size + 1));
 360                 l = readlink(sl, buf, st.st_size);
 361
 362                 if (l == st.st_size)
 363                         {
 364                         buf[l] = '\0';
 365
 366                         ret = buf;
 367                         }
 368                 else
 369                         {
 370                         g_free(buf);
 371                         }
 372                 }
 373
 374         g_free(sl);
 375
 376         return ret;
 377 }
 378
 379 gint get_cpu_cores(void)
 380 {
 381     return sysconf(_SC_NPROCESSORS_ONLN);
 382 }
 383
 384 void tree_path_free_wrapper(void *data, void *UNUSED(useradata))
 385 {
 386         gtk_tree_path_free(static_cast<GtkTreePath *>(data));
 387 }
 388
 389 /* Copied from the libarchive .repo. examples */
 390
 391 #ifndef HAVE_ARCHIVE
 392 gchar *open_archive(FileData *UNUSED(fd))
 393 {
 394         log_printf("%s", _("Warning: libarchive not installed"));
 395         return NULL;
 396 }
 397
 398 #else
 399
 400 #include <archive.h>
 401 #include <archive_entry.h>
 402
 403 static void errmsg(const char *);
 404 static gboolean extract(const char *filename, int do_extract, int flags);
 405 static int copy_data(struct archive *, struct archive *);
 406 static void msg(const char *);
 407 static int verbose = 0;
 408
 409 gchar *open_archive(FileData *fd)
 410 {
 411         int flags;
 412         gchar *current_dir;
 413         gchar *destination_dir;
 414         gboolean success;
 415         gint error;
 416
 417         destination_dir = g_build_filename(g_get_tmp_dir(), GQ_ARCHIVE_DIR, instance_identifier, fd->path, NULL);
 418
 419         if (!recursive_mkdir_if_not_exists(destination_dir, 0755))
 420                 {
 421                 log_printf("%s%s%s", _("Open Archive - Cannot create directory: "), destination_dir, "\n");
 422                 g_free(destination_dir);
 423                 return NULL;
 424                 }
 425
 426         current_dir = g_get_current_dir();
 427         error = chdir(destination_dir);
 428         if (error)
 429                 {
 430                 log_printf("%s%s%s%s%s", _("Open Archive - Cannot change directory to: "), destination_dir, _("\n  Error code: "), strerror(errno), "\n");
 431                 g_free(destination_dir);
 432                 g_free(current_dir);
 433                 return NULL;
 434                 }
 435
 436         flags = ARCHIVE_EXTRACT_TIME;
 437         success = extract(fd->path, 1, flags);
 438
 439         error = chdir(current_dir);
 440         if (error)
 441                 {
 442                 log_printf("%s%s%s%s%s", _("Open Archive - Cannot change directory to: "), current_dir, _("\n  Error code: "), strerror(errno), "\n");
 443                 g_free(destination_dir);
 444                 g_free(current_dir);
 445                 return NULL;
 446                 }
 447         g_free(current_dir);
 448
 449         if (!success)
 450                 {
 451                 g_free(destination_dir);
 452                 destination_dir = NULL;
 453                 }
 454
 455         return destination_dir;
 456 }
 457
 458 static gboolean extract(const char *filename, int do_extract, int flags)
 459 {
 460         struct archive *a;
 461         struct archive *ext;
 462         struct archive_entry *entry;
 463         int r;
 464
 465         a = archive_read_new();
 466         ext = archive_write_disk_new();
 467         archive_write_disk_set_options(ext, flags);
 468         archive_write_disk_set_standard_lookup(ext);
 469         archive_read_support_filter_all(a);
 470         archive_read_support_format_all(a);
 471
 472         if (filename != NULL && strcmp(filename, "-") == 0)
 473                 {
 474                 filename = NULL;
 475                 }
 476         if ((r = archive_read_open_filename(a, filename, 10240)))
 477                 {
 478                 errmsg(archive_error_string(a));
 479                 errmsg("\n");
 480                 return(FALSE);
 481                 }
 482         for (;;)
 483                 {
 484                 int needcr = 0;
 485
 486                 r = archive_read_next_header(a, &entry);
 487                 if (r == ARCHIVE_EOF)
 488                         {
 489                         break;
 490                         }
 491                 if (r != ARCHIVE_OK)
 492                         {
 493                         errmsg(archive_error_string(a));
 494                         errmsg("\n");
 495                         return(FALSE);
 496                         }
 497                 if (verbose && do_extract)
 498                         {
 499                         msg("x ");
 500                         }
 501                 if (verbose || !do_extract)
 502                         {
 503                         msg(archive_entry_pathname(entry));
 504                         msg(" ");
 505                         needcr = 1;
 506                         }
 507                 if (do_extract)
 508                         {
 509                         r = archive_write_header(ext, entry);
 510                         if (r != ARCHIVE_OK)
 511                                 {
 512                                 errmsg(archive_error_string(a));
 513                                 needcr = 1;
 514                                 }
 515                         else
 516                                 {
 517                                 r = copy_data(a, ext);
 518                                 if (r != ARCHIVE_OK)
 519                                         {
 520                                         needcr = 1;
 521                                         }
 522                                 }
 523                         }
 524                 if (needcr)
 525                         {
 526                         msg("\n");
 527                         }
 528                 }
 529         archive_read_close(a);
 530         archive_read_free(a);
 531
 532         archive_write_close(ext);
 533         archive_write_free(ext);
 534         return(TRUE);
 535 }
 536
 537 static int copy_data(struct archive *ar, struct archive *aw)
 538 {
 539         int r;
 540         const void *buff;
 541         size_t size;
 542         int64_t offset;
 543
 544         for (;;)
 545                 {
 546                 r = archive_read_data_block(ar, &buff, &size, &offset);
 547                 if (r == ARCHIVE_EOF)
 548                         return (ARCHIVE_OK);
 549                 if (r != ARCHIVE_OK)
 550                         {
 551                         errmsg(archive_error_string(ar));
 552                         return (r);
 553                         }
 554                 r = archive_write_data_block(aw, buff, size, offset);
 555                 if (r != ARCHIVE_OK)
 556                         {
 557                         errmsg(archive_error_string(ar));
 558                         return (r);
 559                         }
 560                 }
 561 }
 562
 563 static void msg(const char *m)
 564 {
 565         log_printf("Open Archive - libarchive error: %s \n", m);
 566 }
 567
 568 static void errmsg(const char *m)
 569 {
 570         if (m == NULL)
 571                 {
 572                 m = "Error: No error description provided.\n";
 573                 }
 574         log_printf("Open Archive - libarchive error: %s \n", m);
 575 }
 576 #endif
 577 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */