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/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2007 Blender Foundation. All rights reserved. */
/** \file
* \ingroup spfile
*
* Storage for a list of folders for history backward and forward navigation.
*/
#include <cstring>
#include "BLI_listbase.h"
#include "BLI_path_util.h"
#include "BLI_string.h"
#include "BKE_context.h"
#include "DNA_space_types.h"
#include "ED_fileselect.h"
#include "MEM_guardedalloc.h"
#include "file_intern.h"
/* -------------------------------------------------------------------- */
/** \name FOLDERLIST (previous/next)
* \{ */
struct FolderList {
FolderList *next, *prev;
char *foldername;
};
void folderlist_popdir(struct ListBase *folderlist, char *dir)
{
const char *prev_dir;
FolderList *folder;
folder = static_cast<FolderList *>(folderlist->last);
if (folder) {
/* remove the current directory */
MEM_freeN(folder->foldername);
BLI_freelinkN(folderlist, folder);
folder = static_cast<FolderList *>(folderlist->last);
if (folder) {
prev_dir = folder->foldername;
BLI_strncpy(dir, prev_dir, FILE_MAXDIR);
}
}
/* Delete the folder next or use set-directory directly before PREVIOUS OP. */
}
void folderlist_pushdir(ListBase *folderlist, const char *dir)
{
if (!dir[0]) {
return;
}
FolderList *folder, *previous_folder;
previous_folder = static_cast<FolderList *>(folderlist->last);
/* check if already exists */
if (previous_folder && previous_folder->foldername) {
if (BLI_path_cmp(previous_folder->foldername, dir) == 0) {
return;
}
}
/* create next folder element */
folder = MEM_new<FolderList>(__func__);
folder->foldername = BLI_strdup(dir);
/* add it to the end of the list */
BLI_addtail(folderlist, folder);
}
const char *folderlist_peeklastdir(ListBase *folderlist)
{
FolderList *folder;
if (!folderlist->last) {
return nullptr;
}
folder = static_cast<FolderList *>(folderlist->last);
return folder->foldername;
}
bool folderlist_clear_next(struct SpaceFile *sfile)
{
const FileSelectParams *params = ED_fileselect_get_active_params(sfile);
FolderList *folder;
/* if there is no folder_next there is nothing we can clear */
if (BLI_listbase_is_empty(sfile->folders_next)) {
return false;
}
/* if previous_folder, next_folder or refresh_folder operators are executed
* it doesn't clear folder_next */
folder = static_cast<FolderList *>(sfile->folders_prev->last);
if ((!folder) || (BLI_path_cmp(folder->foldername, params->dir) == 0)) {
return false;
}
/* eventually clear flist->folders_next */
return true;
}
void folderlist_free(ListBase *folderlist)
{
if (folderlist) {
LISTBASE_FOREACH (FolderList *, folder, folderlist) {
MEM_freeN(folder->foldername);
}
BLI_freelistN(folderlist);
}
}
static ListBase folderlist_duplicate(ListBase *folderlist)
{
ListBase folderlistn = {nullptr};
BLI_duplicatelist(&folderlistn, folderlist);
LISTBASE_FOREACH (FolderList *, folder, &folderlistn) {
folder->foldername = (char *)MEM_dupallocN(folder->foldername);
}
return folderlistn;
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name Folder-History (wraps/owns file list above)
* \{ */
static FileFolderHistory *folder_history_find(const SpaceFile *sfile, eFileBrowse_Mode browse_mode)
{
LISTBASE_FOREACH (FileFolderHistory *, history, &sfile->folder_histories) {
if (history->browse_mode == browse_mode) {
return history;
}
}
return nullptr;
}
void folder_history_list_ensure_for_active_browse_mode(SpaceFile *sfile)
{
FileFolderHistory *history = folder_history_find(sfile, (eFileBrowse_Mode)sfile->browse_mode);
if (!history) {
history = MEM_cnew<FileFolderHistory>(__func__);
history->browse_mode = sfile->browse_mode;
BLI_addtail(&sfile->folder_histories, history);
}
sfile->folders_next = &history->folders_next;
sfile->folders_prev = &history->folders_prev;
}
static void folder_history_entry_free(SpaceFile *sfile, FileFolderHistory *history)
{
if (sfile->folders_prev == &history->folders_prev) {
sfile->folders_prev = nullptr;
}
if (sfile->folders_next == &history->folders_next) {
sfile->folders_next = nullptr;
}
folderlist_free(&history->folders_prev);
folderlist_free(&history->folders_next);
BLI_freelinkN(&sfile->folder_histories, history);
}
void folder_history_list_free(SpaceFile *sfile)
{
LISTBASE_FOREACH_MUTABLE (FileFolderHistory *, history, &sfile->folder_histories) {
folder_history_entry_free(sfile, history);
}
}
ListBase folder_history_list_duplicate(ListBase *listbase)
{
ListBase histories = {nullptr};
LISTBASE_FOREACH (FileFolderHistory *, history, listbase) {
FileFolderHistory *history_new = static_cast<FileFolderHistory *>(MEM_dupallocN(history));
history_new->folders_prev = folderlist_duplicate(&history->folders_prev);
history_new->folders_next = folderlist_duplicate(&history->folders_next);
BLI_addtail(&histories, history_new);
}
return histories;
}
/** \} */
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