484 lines
18 KiB
C
484 lines
18 KiB
C
/*
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* Copyright (c) 2019-2020 shchmue
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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ISC License
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hactool Copyright (c) 2018, SciresM
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "hierarchical_save_file_table.h"
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#include "path_parser.h"
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#include <gfx_utils.h>
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#include <string.h>
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bool save_hierarchical_file_table_find_path_recursive(hierarchical_save_file_table_ctx_t *ctx, const char *path, save_entry_key_t *key) {
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path_parser_ctx_t parser;
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if (!save_path_parser_init(&parser, path)) {
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EPRINTF("Failed to init path parser!");
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return false;
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}
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uint32_t current_len = 0;
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const char *current = save_path_parser_get_current(&parser, ¤t_len);
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memset(key, 0, sizeof(save_entry_key_t));
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memcpy(key->name, current, current_len);
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while (!save_path_parser_is_finished(&parser)) {
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key->parent = save_fs_list_get_index_from_key(&ctx->directory_table, key, NULL);
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if (key->parent & 0x80000000)
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return false;
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save_path_parser_try_get_next(&parser, key->name);
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}
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return true;
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}
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bool save_hierarchical_file_table_try_open_file(hierarchical_save_file_table_ctx_t *ctx, const char *path, save_file_info_t *file_info) {
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save_entry_key_t key;
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if (!save_hierarchical_file_table_find_path_recursive(ctx, path, &key)) {
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memset(file_info, 0, sizeof(save_file_info_t));
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return false;
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}
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save_table_entry_t value;
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if (save_fs_list_try_get_value_by_key(&ctx->file_table, &key, &value)) {
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memcpy(file_info, &value.save_file_info, sizeof(save_file_info_t));
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return true;
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}
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memset(file_info, 0, sizeof(save_file_info_t));
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return false;
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}
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bool save_hierarchical_file_table_try_open_directory(hierarchical_save_file_table_ctx_t *ctx, const char *path, save_find_position_t *position) {
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save_entry_key_t key;
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if (!save_hierarchical_file_table_find_path_recursive(ctx, path, &key)) {
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memset(position, 0, sizeof(save_find_position_t));
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return false;
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}
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save_table_entry_t entry;
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if (save_fs_list_try_get_value_by_key(&ctx->file_table, &key, &entry)) {
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memcpy(position, &entry.save_find_position, sizeof(save_find_position_t));
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return true;
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}
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memset(position, 0, sizeof(save_find_position_t));
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return false;
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}
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bool save_hierarchical_file_table_find_next_file(hierarchical_save_file_table_ctx_t *ctx, save_find_position_t *position, save_file_info_t *info, char *name) {
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if (position->next_file == 0) {
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memset(info, 0, sizeof(save_file_info_t));
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memset(name, 0, SAVE_FS_LIST_MAX_NAME_LENGTH);
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return false;
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}
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save_table_entry_t entry;
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if (!save_fs_list_try_get_value_and_name(&ctx->file_table, position->next_file, &entry, name)) {
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memset(info, 0, sizeof(save_file_info_t));
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memset(name, 0, SAVE_FS_LIST_MAX_NAME_LENGTH);
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return false;
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}
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position->next_file = entry.next_sibling;
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memcpy(info, &entry.save_file_info, sizeof(save_file_info_t));
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return true;
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}
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bool save_hierarchical_file_table_find_next_directory(hierarchical_save_file_table_ctx_t *ctx, save_find_position_t *position, char *name) {
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if (position->next_directory == 0) {
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return false;
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}
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save_table_entry_t entry;
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if(!save_fs_list_try_get_value_and_name(&ctx->directory_table, position->next_directory, &entry, name)) {
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memset(name, 0, SAVE_FS_LIST_MAX_NAME_LENGTH);
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return false;
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}
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position->next_directory = entry.next_sibling;
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return true;
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}
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static bool save_hierarchical_file_table_link_file_to_parent(hierarchical_save_file_table_ctx_t *ctx, uint32_t parent_index, uint32_t file_index) {
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save_table_entry_t parent_entry, file_entry;
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if (!save_fs_list_get_value_by_index(&ctx->directory_table, parent_index, &parent_entry)) {
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EPRINTF("Failed to get directory table value!");
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return false;
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}
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if (!save_fs_list_get_value_by_index(&ctx->file_table, file_index, &file_entry)) {
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EPRINTF("Failed to get file table value!");
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return false;
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}
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file_entry.next_sibling = parent_entry.save_find_position.next_file;
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parent_entry.save_find_position.next_file = file_index;
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if (!save_fs_list_set_value(&ctx->directory_table, parent_index, &parent_entry)) {
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EPRINTF("Failed to set directory table value!");
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return false;
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}
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if (!save_fs_list_set_value(&ctx->file_table, file_index, &file_entry)) {
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EPRINTF("Failed to set file table value!");
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return false;
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}
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return true;
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}
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static bool save_hierarchical_file_table_link_directory_to_parent(hierarchical_save_file_table_ctx_t *ctx, uint32_t parent_index, uint32_t dir_index) {
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save_table_entry_t parent_entry, dir_entry;
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if (!save_fs_list_get_value_by_index(&ctx->directory_table, parent_index, &parent_entry)) {
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EPRINTF("Failed to get parent directory table value!");
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return false;
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}
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if (!save_fs_list_get_value_by_index(&ctx->directory_table, dir_index, &dir_entry)) {
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EPRINTF("Failed to get directory table value!");
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return false;
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}
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dir_entry.next_sibling = parent_entry.save_find_position.next_directory;
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parent_entry.save_find_position.next_directory = dir_index;
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if (!save_fs_list_set_value(&ctx->directory_table, parent_index, &parent_entry)) {
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EPRINTF("Failed to set parent directory table value!");
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return false;
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}
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if (!save_fs_list_set_value(&ctx->directory_table, dir_index, &dir_entry)) {
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EPRINTF("Failed to set directory table value!");
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return false;
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}
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return true;
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}
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void save_hierarchical_file_table_unlink_file_from_parent(hierarchical_save_file_table_ctx_t *ctx, uint32_t parent_index, uint32_t file_index) {
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save_table_entry_t parent_entry, file_entry;
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save_fs_list_get_value_by_index(&ctx->directory_table, parent_index, &parent_entry);
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save_fs_list_get_value_by_index(&ctx->file_table, file_index, &file_entry);
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if (parent_entry.save_find_position.next_file == file_index) {
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parent_entry.save_find_position.next_file = file_entry.next_sibling;
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save_fs_list_set_value(&ctx->directory_table, parent_index, &parent_entry);
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return;
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}
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uint32_t prev_index = parent_entry.save_find_position.next_file;
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save_table_entry_t prev_entry, cur_entry;
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save_fs_list_get_value_by_index(&ctx->file_table, prev_index, &prev_entry);
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uint32_t cur_index = prev_entry.next_sibling;
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while (cur_index != 0) {
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save_fs_list_get_value_by_index(&ctx->file_table, cur_index, &cur_entry);
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if (cur_index == file_index) {
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prev_entry.next_sibling = cur_entry.next_sibling;
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save_fs_list_set_value(&ctx->file_table, prev_index, &prev_entry);
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return;
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}
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prev_index = cur_index;
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memcpy(&prev_entry, &cur_entry, sizeof(prev_entry));
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cur_index = prev_entry.next_sibling;
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}
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}
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void save_hierarchical_file_table_unlink_directory_from_parent(hierarchical_save_file_table_ctx_t *ctx, uint32_t parent_index, uint32_t dir_index) {
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save_table_entry_t parent_entry, dir_entry;
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save_fs_list_get_value_by_index(&ctx->directory_table, parent_index, &parent_entry);
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save_fs_list_get_value_by_index(&ctx->directory_table, dir_index, &dir_entry);
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if (parent_entry.save_find_position.next_directory == dir_index) {
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parent_entry.save_find_position.next_directory = dir_entry.next_sibling;
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save_fs_list_set_value(&ctx->directory_table, parent_index, &parent_entry);
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return;
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}
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uint32_t prev_index = parent_entry.save_find_position.next_directory;
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save_table_entry_t prev_entry, cur_entry;
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save_fs_list_get_value_by_index(&ctx->directory_table, prev_index, &prev_entry);
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uint32_t cur_index = prev_entry.next_sibling;
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while (cur_index != 0) {
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save_fs_list_get_value_by_index(&ctx->directory_table, cur_index, &cur_entry);
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if (cur_index == dir_index) {
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prev_entry.next_sibling = cur_entry.next_sibling;
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save_fs_list_set_value(&ctx->directory_table, prev_index, &prev_entry);
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return;
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}
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prev_index = cur_index;
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memcpy(&prev_entry, &cur_entry, sizeof(prev_entry));
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cur_index = prev_entry.next_sibling;
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}
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}
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bool save_hierarchical_file_table_delete_file(hierarchical_save_file_table_ctx_t *ctx, const char *path) {
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save_entry_key_t key;
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save_hierarchical_file_table_find_path_recursive(ctx, path, &key);
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uint32_t parent_index = key.parent;
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uint32_t to_delete_index = save_fs_list_get_index_from_key(&ctx->file_table, &key, NULL);
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if (to_delete_index == 0xFFFFFFFF) {
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EPRINTF("File not found!");
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return false;
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}
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save_hierarchical_file_table_unlink_file_from_parent(ctx, parent_index, to_delete_index);
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return save_fs_list_remove(&ctx->file_table, &key);
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}
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bool save_hierarchical_file_table_delete_directory(hierarchical_save_file_table_ctx_t *ctx, const char *path) {
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save_entry_key_t key;
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save_hierarchical_file_table_find_path_recursive(ctx, path, &key);
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uint32_t parent_index = key.parent;
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uint32_t to_delete_index = save_fs_list_get_index_from_key(&ctx->directory_table, &key, NULL);
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if (to_delete_index == 0xFFFFFFFF) {
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EPRINTF("Directory not found!");
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return false;
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}
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save_table_entry_t to_delete_entry;
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save_fs_list_get_value_by_index(&ctx->directory_table, to_delete_index, &to_delete_entry);
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if (to_delete_entry.save_find_position.next_directory != 0 || to_delete_entry.save_find_position.next_file != 0) {
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EPRINTF("Directory is not empty!");
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return false;
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}
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save_hierarchical_file_table_unlink_directory_from_parent(ctx, parent_index, to_delete_index);
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return save_fs_list_remove(&ctx->directory_table, &key);
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}
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bool save_hierarchical_file_table_rename_file(hierarchical_save_file_table_ctx_t *ctx, const char *src_path, const char *dst_path) {
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save_file_info_t file_info;
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save_find_position_t position;
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save_entry_key_t old_key, new_key;
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if (strcmp(src_path, dst_path) == 0 || save_hierarchical_file_table_try_open_file(ctx, dst_path, &file_info) || save_hierarchical_file_table_try_open_directory(ctx, dst_path, &position)) {
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EPRINTF("Destination path already exists!");
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return false;
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}
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if (!save_hierarchical_file_table_find_path_recursive(ctx, src_path, &old_key)) {
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EPRINTF("File not found!");
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return false;
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}
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uint32_t file_index = save_fs_list_get_index_from_key(&ctx->file_table, &old_key, NULL);
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if (!save_hierarchical_file_table_find_path_recursive(ctx, dst_path, &new_key)) {
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EPRINTF("File not found!");
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return false;
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}
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if (old_key.parent != new_key.parent) {
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save_hierarchical_file_table_unlink_file_from_parent(ctx, old_key.parent, file_index);
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save_hierarchical_file_table_link_file_to_parent(ctx, new_key.parent, file_index);
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}
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return save_fs_list_change_key(&ctx->file_table, &old_key, &new_key);
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}
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static ALWAYS_INLINE bool save_is_sub_path(const char *path1, const char *path2) {
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/* Check if either path is subpath of the other. */
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uint64_t path1_len = strlen(path1), path2_len = strlen(path2);
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if (path1_len == 0 || path2_len == 0)
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return true;
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if (path1[path1_len - 1] == '/')
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path1_len--;
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if (path2[path2_len - 1] == '/')
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path2_len--;
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const char *short_path, *long_path;
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uint64_t short_path_len, long_path_len;
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if (path1_len < path2_len) {
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short_path = path1;
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short_path_len = path1_len;
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long_path = path2;
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long_path_len = path2_len;
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} else {
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short_path = path2;
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short_path_len = path2_len;
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long_path = path1;
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long_path_len = path1_len;
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}
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if (strncmp(short_path, long_path, short_path_len) != 0)
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return false;
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return long_path_len > short_path_len + 1 && long_path[short_path_len] == '/';
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}
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bool save_hierarchical_file_table_rename_directory(hierarchical_save_file_table_ctx_t *ctx, const char *src_path, const char *dst_path) {
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save_file_info_t file_info;
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save_find_position_t position;
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save_entry_key_t old_key, new_key;
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if (strcmp(src_path, dst_path) == 0 || save_hierarchical_file_table_try_open_file(ctx, dst_path, &file_info) || save_hierarchical_file_table_try_open_directory(ctx, dst_path, &position)) {
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EPRINTF("Destination path already exists!");
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return false;
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}
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if (!save_hierarchical_file_table_find_path_recursive(ctx, src_path, &old_key)) {
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EPRINTF("File not found!");
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return false;
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}
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uint32_t dir_index = save_fs_list_get_index_from_key(&ctx->file_table, &old_key, NULL);
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if (!save_hierarchical_file_table_find_path_recursive(ctx, dst_path, &new_key)) {
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EPRINTF("File not found!");
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return false;
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}
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if (save_is_sub_path(src_path, dst_path)) {
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EPRINTF("Destination is subpath of source!");
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return false;
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}
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if (old_key.parent != new_key.parent) {
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save_hierarchical_file_table_unlink_directory_from_parent(ctx, old_key.parent, dir_index);
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save_hierarchical_file_table_link_directory_to_parent(ctx, new_key.parent, dir_index);
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}
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return save_fs_list_change_key(&ctx->directory_table, &old_key, &new_key);
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}
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uint32_t save_hierarchical_file_table_create_parent_directory_recursive(hierarchical_save_file_table_ctx_t *ctx, path_parser_ctx_t *parser, save_entry_key_t *key) {
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uint32_t prev_index = 0;
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while (!save_path_parser_is_finished(parser)) {
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uint32_t index = save_fs_list_get_index_from_key(&ctx->directory_table, key, NULL);
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if (index == 0xFFFFFFFF) {
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save_table_entry_t new_entry;
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memset(&new_entry, 0, sizeof(new_entry));
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index = save_fs_list_add(&ctx->directory_table, key, &new_entry);
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if ((prev_index & 0x80000000) == 0)
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save_hierarchical_file_table_link_directory_to_parent(ctx, prev_index, index);
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}
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prev_index = index;
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key->parent = index;
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save_path_parser_try_get_next(parser, key->name);
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}
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return prev_index;
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}
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static bool save_hierarchical_file_table_create_file_recursive(hierarchical_save_file_table_ctx_t *ctx, const char *path, save_file_info_t *file_info) {
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path_parser_ctx_t parser;
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if (!save_path_parser_init(&parser, path)) {
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EPRINTF("Failed to init path parser!");
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return false;
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}
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save_entry_key_t key = {"", 0};
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uint32_t current_len = 0;
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const char *current = save_path_parser_get_current(&parser, ¤t_len);
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memcpy(key.name, current, current_len);
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uint32_t parent_index = save_hierarchical_file_table_create_parent_directory_recursive(ctx, &parser, &key);
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uint32_t index = save_fs_list_get_index_from_key(&ctx->file_table, &key, NULL);
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save_table_entry_t file_entry;
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memset(&file_entry, 0, sizeof(file_entry));
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if ((index & 0x80000000) == 0) {
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save_fs_list_get_value_by_index(&ctx->file_table, index, &file_entry);
|
|
memcpy(&file_entry.save_file_info, file_info, sizeof(save_file_info_t));
|
|
save_fs_list_set_value(&ctx->file_table, index, &file_entry);
|
|
return true;
|
|
}
|
|
|
|
memcpy(&file_entry.save_file_info, file_info, sizeof(save_file_info_t));
|
|
index = save_fs_list_add(&ctx->file_table, &key, &file_entry);
|
|
if (index == 0) {
|
|
EPRINTF("Failed to add file to FS list!");
|
|
return false;
|
|
}
|
|
|
|
return save_hierarchical_file_table_link_file_to_parent(ctx, parent_index, index);
|
|
}
|
|
|
|
static bool save_hierarchical_file_table_create_directory_recursive(hierarchical_save_file_table_ctx_t *ctx, const char *path) {
|
|
path_parser_ctx_t parser;
|
|
if (!save_path_parser_init(&parser, path)) {
|
|
EPRINTF("Failed to init path parser!");
|
|
return false;
|
|
}
|
|
|
|
save_entry_key_t key = {"", 0};
|
|
uint32_t current_len = 0;
|
|
const char *current = save_path_parser_get_current(&parser, ¤t_len);
|
|
memcpy(key.name, current, current_len);
|
|
|
|
uint32_t parent_index = save_hierarchical_file_table_create_parent_directory_recursive(ctx, &parser, &key);
|
|
|
|
uint32_t index = save_fs_list_get_index_from_key(&ctx->directory_table, &key, NULL);
|
|
|
|
if (index != 0xFFFFFFFF)
|
|
return true;
|
|
|
|
save_table_entry_t dir_entry;
|
|
memset(&dir_entry, 0, sizeof(dir_entry));
|
|
save_fs_list_add(&ctx->directory_table, &key, &dir_entry);
|
|
|
|
return save_hierarchical_file_table_link_directory_to_parent(ctx, parent_index, index);
|
|
}
|
|
|
|
bool save_hierarchical_file_table_add_file(hierarchical_save_file_table_ctx_t *ctx, const char *path, save_file_info_t *file_info) {
|
|
if (strlen(path) == 1 && path[0] == '/') {
|
|
EPRINTF("Path cannot be empty!");
|
|
return false;
|
|
}
|
|
|
|
return save_hierarchical_file_table_create_file_recursive(ctx, path, file_info);
|
|
}
|
|
|
|
bool save_hierarchical_file_table_add_directory(hierarchical_save_file_table_ctx_t *ctx, const char *path) {
|
|
if (strlen(path) == 1 && path[0] == '/') {
|
|
EPRINTF("Directory path cannot be empty!");
|
|
return false;
|
|
}
|
|
|
|
save_hierarchical_file_table_create_directory_recursive(ctx, path);
|
|
return true;
|
|
}
|
|
|