filepath.c

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/*
    This file is part of darktable,
    Copyright (C) 2009-2011 johannes hanika.
    Copyright (C) 2012 Richard Wonka.
    Copyright (C) 2016 Roman Lebedev.
    Copyright (C) 2016, 2019 Tobias Ellinghaus.
    Copyright (C) 2019 Edgardo Hoszowski.
    Copyright (C) 2020 GrahamByrnes.
    Copyright (C) 2020 Marco.
    Copyright (C) 2020 Pascal Obry.
    Copyright (C) 2022 Martin Bařinka.
    
    darktable is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
    
    darktable is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
    
    You should have received a copy of the GNU General Public License
    along with darktable.  If not, see <http://www.gnu.org/licenses/>.
*/
 
#include "system/mem_alloc.h"
#include "common/paths.h"
 
GList* win_image_find_duplicates(const char* filename)
{
  // find all duplicates of an image
  gchar pattern[DT_PATH_MAX] = { 0 };
  GList* files = NULL;
  gchar *imgpath = g_path_get_dirname(filename);
  // Windows only accepts generic wildcards for filename
  static const gchar *glob_patterns[] = { "", "_????", NULL };
  const gchar *c3 = filename + strlen(filename);
  while(*c3 != '\\' && c3 > filename) c3--;
  if(*c3 == '\\') c3++;
  const gchar **glob_pattern = glob_patterns;
  files = NULL;
  while(*glob_pattern)
  {
    g_strlcpy(pattern, filename, sizeof(pattern));
    gchar *c1 = pattern + strlen(pattern);
    while(*c1 != '.' && c1 > pattern) c1--;
    g_strlcpy(c1, *glob_pattern, pattern + sizeof(pattern) - c1);
    const gchar *c2 = filename + strlen(filename);
    while(*c2 != '.' && c2 > filename) c2--;
    snprintf(c1 + strlen(*glob_pattern), pattern + sizeof(pattern) - c1 - strlen(*glob_pattern), "%s.xmp", c2);
    wchar_t *wpattern = g_utf8_to_utf16(pattern, -1, NULL, NULL, NULL);
    WIN32_FIND_DATAW data;
    HANDLE handle = FindFirstFileW(wpattern, &data);
    dt_free(wpattern);
    gchar *imgfile_without_path=g_strndup(c3,c2-c3); /*Need to remove path from front of filename*/
    if(handle != INVALID_HANDLE_VALUE)
    {
      do
      {
        gchar *file = g_utf16_to_utf8(data.cFileName, -1, NULL, NULL, NULL);
        gchar *short_file_name = g_strndup(file, strlen(file) - 4 + c2 - filename - strlen(filename));
        gboolean valid_xmp_name = FALSE;
        if(!(valid_xmp_name = (strlen(short_file_name) == strlen(imgfile_without_path))))
        {
          // if not the same length, make sure the extra char are 2-4 digits preceded by '_'
          gchar *c4 = short_file_name + strlen(short_file_name);
          int i=0;
          do
          {
            c4--;
            i++;
          }
          while(g_ascii_isdigit(*c4) && c4 > short_file_name && i <= 4);
          valid_xmp_name = (*c4 == '_' && strlen(short_file_name) == strlen(imgfile_without_path) + i);
        }
 
        if(valid_xmp_name)
            files = g_list_append(files, g_build_filename(imgpath, file, NULL));
 
        dt_free(short_file_name);
        dt_free(file);
      }
      while(FindNextFileW(handle, &data));
 
    }
 
    dt_free(imgfile_without_path);
    FindClose(handle);
    glob_pattern++;
  }
 
  dt_free(imgpath);
  return files;
}
 
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