mirror of
https://github.com/ekeeke/Genesis-Plus-GX.git
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279 lines
8.6 KiB
C
279 lines
8.6 KiB
C
/* Copyright (C) 2010-2017 The RetroArch team
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*
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* ---------------------------------------------------------------------------------------
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* The following license statement only applies to this file (dir_list.c).
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* ---------------------------------------------------------------------------------------
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*
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* Permission is hereby granted, free of charge,
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* to any person obtaining a copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
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* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <stdlib.h>
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#if defined(_WIN32) && defined(_XBOX)
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#include <xtl.h>
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#elif defined(_WIN32)
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#include <windows.h>
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#endif
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#include <lists/dir_list.h>
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#include <lists/string_list.h>
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#include <file/file_path.h>
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#include <compat/strl.h>
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#include <retro_dirent.h>
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#include <string/stdstring.h>
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#include <retro_miscellaneous.h>
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static int qstrcmp_plain(const void *a_, const void *b_)
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{
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const struct string_list_elem *a = (const struct string_list_elem*)a_;
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const struct string_list_elem *b = (const struct string_list_elem*)b_;
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return strcasecmp(a->data, b->data);
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}
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static int qstrcmp_dir(const void *a_, const void *b_)
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{
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const struct string_list_elem *a = (const struct string_list_elem*)a_;
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const struct string_list_elem *b = (const struct string_list_elem*)b_;
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int a_type = a->attr.i;
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int b_type = b->attr.i;
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/* Sort directories before files. */
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if (a_type != b_type)
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return b_type - a_type;
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return strcasecmp(a->data, b->data);
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}
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/**
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* dir_list_sort:
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* @list : pointer to the directory listing.
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* @dir_first : move the directories in the listing to the top?
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*
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* Sorts a directory listing.
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*
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**/
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void dir_list_sort(struct string_list *list, bool dir_first)
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{
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if (list)
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qsort(list->elems, list->size, sizeof(struct string_list_elem),
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dir_first ? qstrcmp_dir : qstrcmp_plain);
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}
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/**
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* dir_list_free:
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* @list : pointer to the directory listing
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*
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* Frees a directory listing.
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*
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**/
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void dir_list_free(struct string_list *list)
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{
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string_list_free(list);
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}
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/**
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* parse_dir_entry:
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* @name : name of the directory listing entry.
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* @file_path : file path of the directory listing entry.
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* @is_dir : is the directory listing a directory?
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* @include_dirs : include directories as part of the finished directory listing?
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* @include_compressed : Include compressed files, even if not part of ext_list.
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* @list : pointer to directory listing.
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* @ext_list : pointer to allowed file extensions listing.
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* @file_ext : file extension of the directory listing entry.
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*
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* Parses a directory listing.
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*
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* Returns: zero on success, -1 on error, 1 if we should
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* continue to the next entry in the directory listing.
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**/
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static int parse_dir_entry(const char *name, char *file_path,
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bool is_dir, bool include_dirs, bool include_compressed,
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struct string_list *list, struct string_list *ext_list,
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const char *file_ext)
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{
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union string_list_elem_attr attr;
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bool is_compressed_file = false;
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bool supported_by_core = false;
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attr.i = RARCH_FILETYPE_UNSET;
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if (!is_dir)
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{
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is_compressed_file = path_is_compressed_file(file_path);
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if (string_list_find_elem_prefix(ext_list, ".", file_ext))
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supported_by_core = true;
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}
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if (!include_dirs && is_dir)
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return 1;
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if (string_is_equal(name, ".") || string_is_equal(name, ".."))
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return 1;
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if (!is_dir && ext_list &&
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((!is_compressed_file && !supported_by_core) ||
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(!supported_by_core && !include_compressed)))
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return 1;
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if (is_dir)
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attr.i = RARCH_DIRECTORY;
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if (is_compressed_file)
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attr.i = RARCH_COMPRESSED_ARCHIVE;
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/* The order of these ifs is important.
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* If the file format is explicitly supported by the libretro-core, we
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* need to immediately load it and not designate it as a compressed file.
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*
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* Example: .zip could be supported as a image by the core and as a
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* compressed_file. In that case, we have to interpret it as a image.
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*
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* */
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if (supported_by_core)
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attr.i = RARCH_PLAIN_FILE;
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if (!string_list_append(list, file_path, attr))
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return -1;
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return 0;
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}
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/**
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* dir_list_read:
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* @dir : directory path.
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* @list : the string list to add files to
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* @ext_list : the string list of extensions to include
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* @include_dirs : include directories as part of the finished directory listing?
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* @include_hidden : include hidden files and directories as part of the finished directory listing?
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* @include_compressed : Only include files which match ext. Do not try to match compressed files, etc.
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* @recursive : list directory contents recursively
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*
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* Add files within a directory to an existing string list
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*
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* Returns: -1 on error, 0 on success.
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**/
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static int dir_list_read(const char *dir,
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struct string_list *list, struct string_list *ext_list,
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bool include_dirs, bool include_hidden,
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bool include_compressed, bool recursive)
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{
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struct RDIR *entry = retro_opendir(dir);
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if (!entry)
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return -1;
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if (retro_dirent_error(entry))
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{
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retro_closedir(entry);
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return -1;
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}
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#ifdef _WIN32
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if (include_hidden)
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entry->entry.dwFileAttributes |= FILE_ATTRIBUTE_HIDDEN;
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else
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entry->entry.dwFileAttributes &= ~FILE_ATTRIBUTE_HIDDEN;
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#endif
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while (retro_readdir(entry))
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{
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char file_path[PATH_MAX_LENGTH];
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bool is_dir = false;
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int ret = 0;
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const char *name = retro_dirent_get_name(entry);
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const char *file_ext = path_get_extension(name);
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file_path[0] = '\0';
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fill_pathname_join(file_path, dir, name, sizeof(file_path));
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is_dir = retro_dirent_is_dir(entry, file_path);
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if (!include_hidden)
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{
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if (*name == '.')
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continue;
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}
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if(is_dir && recursive)
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{
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if(strstr(name, ".") || strstr(name, ".."))
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continue;
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dir_list_read(file_path, list, ext_list, include_dirs,
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include_hidden, include_compressed, recursive);
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}
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ret = parse_dir_entry(name, file_path, is_dir,
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include_dirs, include_compressed, list, ext_list, file_ext);
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if (ret == -1)
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{
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retro_closedir(entry);
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return -1;
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}
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if (ret == 1)
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continue;
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}
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retro_closedir(entry);
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return 0;
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}
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/**
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* dir_list_new:
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* @dir : directory path.
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* @ext : allowed extensions of file directory entries to include.
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* @include_dirs : include directories as part of the finished directory listing?
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* @include_hidden : include hidden files and directories as part of the finished directory listing?
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* @include_compressed : Only include files which match ext. Do not try to match compressed files, etc.
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* @recursive : list directory contents recursively
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*
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* Create a directory listing.
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*
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* Returns: pointer to a directory listing of type 'struct string_list *' on success,
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* NULL in case of error. Has to be freed manually.
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**/
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struct string_list *dir_list_new(const char *dir,
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const char *ext, bool include_dirs,
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bool include_hidden, bool include_compressed,
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bool recursive)
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{
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struct string_list *ext_list = NULL;
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struct string_list *list = NULL;
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if (!(list = string_list_new()))
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return NULL;
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if (ext)
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ext_list = string_split(ext, "|");
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if(dir_list_read(dir, list, ext_list, include_dirs,
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include_hidden, include_compressed, recursive) == -1)
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{
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string_list_free(list);
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string_list_free(ext_list);
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return NULL;
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}
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string_list_free(ext_list);
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return list;
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}
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