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/******************************************************************************
* Copyright (C) 2015 Alejandro Colomar Andrés *
* SPDX-License-Identifier: GPL-2.0-only *
******************************************************************************/
/******************************************************************************
******* headers **************************************************************
******************************************************************************/
#include "mine-sweeper/save/save.h"
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#define ALX_NO_PREFIX
#include <libalx/base/compiler/unused.h>
#include <libalx/base/errno/error.h>
#include <libalx/base/stdio/printf/sbprintf.h>
#include <libalx/base/stdio/seekc.h>
#include "mine-sweeper/game/core.h"
#include "mine-sweeper/player/iface.h"
/******************************************************************************
******* variables ************************************************************
******************************************************************************/
char home_path [FILENAME_MAX];
char user_game_path [FILENAME_MAX];
char saved_path [FILENAME_MAX];
char saved_name [FILENAME_MAX];
/******************************************************************************
******* global functions *****************************************************
******************************************************************************/
void save_init (void)
{
if (sbprintf(home_path, NULL, "%s/", getenv(ENV_HOME)))
goto err_path;
if (sbprintf(user_game_path, NULL, "%s/%s/", home_path, USER_GAME_DIR))
goto err_path;
if (sbprintf(saved_path, NULL, "%s/%s/", home_path, USER_SAVED_DIR))
goto err_path;
saved_name[0] = '\0';
if (mkdir(user_game_path, 0700)) {
if (errno != EEXIST)
goto err_mkdir;
}
if (mkdir(saved_path, 0700)) {
if (errno != EEXIST)
goto err_mkdir;
return;
}
return;
err_path:
perrorx(getenv(ENV_HOME));
exit(EXIT_FAILURE);
err_mkdir:
perrorx(home_path);
}
void save_clr (void)
{
if (sbprintf(saved_path, NULL, "%s/%s/", home_path, USER_SAVED_DIR))
goto err;
return;
err:
perrorx(home_path);
exit(EXIT_FAILURE);
}
int load_game_file (void)
{
char fname[FILENAME_MAX];
FILE *fp;
int i;
int j;
if (sbprintf(fname, NULL, "%s/%s", saved_path, saved_name))
goto err_path;
fp = fopen(fname, "r");
if (!fp)
return -1;
fscanf(fp, "mine-sweeper saved game");
fscanf(fp, " rows %ti", &game_board.rows);
fscanf(fp, " cols %ti", &game_board.cols);
fscanf(fp, " mines %i", &game_board.mines);
fscanf(fp, " gnd");
for (i = 0; i < game_board.rows; i++) {
fscanf(fp, " %i", &game_board.gnd[i][0]);
for (j = 1; j < game_board.cols; j++)
fscanf(fp, ",%i", &game_board.gnd[i][j]);
}
fscanf(fp, " usr");
for (i = 0; i < game_board.rows; i++) {
fscanf(fp, " %i", &game_board.usr[i][0]);
for (j = 1; j < game_board.cols; j++)
fscanf(fp, ",%i", &game_board.usr[i][j]);
}
fscanf(fp, " flags %i", &game_board.flags);
fscanf(fp, " cleared %i", &game_board.clr);
fclose(fp);
return 0;
err_path:
perrorx(saved_name);
alx_wait4enter();
exit(EXIT_FAILURE);
}
void save_game_file (char fpath[static restrict FILENAME_MAX])
{
char fname[FILENAME_MAX];
char tmp[FILENAME_MAX];
char old_saved[FILENAME_MAX];
char file_num[6];
FILE *fp;
int i;
int j;
bool x;
/* Don't change saved_name variable if not in default dir */
if (fpath)
UNUSED(sbprintf(old_saved, NULL, "%s", saved_name));
/* Default path & name */
save_clr();
UNUSED(sbprintf(saved_name, NULL, "%s", SAVED_NAME_DEFAULT));
file_num[0] = '\0';
/* Request file name */
player_iface_save_name(fpath, saved_name);
/* Look for an unused name of the type 'name_XXX.mine'. */
x = true;
for (i = 0; x; i++) {
if (!fpath) {
if (sbprintf(fname, NULL, "%s/%s%s%s", saved_path,
saved_name, file_num, FILE_EXTENSION)) {
goto err_path;
}
} else {
if (sbprintf(fname, NULL, "%s/%s%s%s", fpath,
saved_name, file_num, FILE_EXTENSION)) {
goto err_path;
}
}
fp = fopen(fname, "r");
if (fp) {
fclose(fp);
file_num[0] = '_';
file_num[1] = '0' + ((i / 100) % 10);
file_num[2] = '0' + ((i / 10) % 10);
file_num[3] = '0' + (i % 10);
file_num[4] = '\0';
} else {
x = false;
if (sbprintf(tmp, NULL, "%s%s%s",
saved_name, file_num, FILE_EXTENSION)) {
goto err_path;
}
UNUSED(sbprintf(saved_name, NULL, "%s", tmp));
}
}
/* Write to a new file */
fp = fopen(fname, "w");
if (!fp) {
perrorx(fname);
goto err_fopen;
}
fprintf(fp, "mine-sweeper saved game\n");
fprintf(fp, "rows %ti\n", game_board.rows);
fprintf(fp, "cols %ti\n", game_board.cols);
fprintf(fp, "mines %i\n", game_board.mines);
fprintf(fp, "gnd\n");
for (i = 0; i < game_board.rows; i++) {
fprintf(fp, "%i", game_board.gnd[i][0]);
for (j = 1; j < game_board.cols; j++)
fprintf(fp, ",%i", game_board.gnd[i][j]);
fprintf(fp, "\n");
}
fprintf(fp, "usr\n");
for (i = 0; i < game_board.rows; i++) {
fprintf(fp, "%i", game_board.usr[i][0]);
for (j = 1; j < game_board.cols; j++)
fprintf(fp, ",%i", game_board.usr[i][j]);
fprintf(fp, "\n");
}
fprintf(fp, "flags %i\n", game_board.flags);
fprintf(fp, "cleared %i\n", game_board.clr);
fclose(fp);
err_fopen:
/* Don't change saved_name if saving in non-default dir */
if (fpath)
UNUSED(sbprintf(saved_name, NULL, "%s", old_saved));
return;
err_path:
perrorx(fname);
alx_wait4enter();
exit(EXIT_FAILURE);
}
/******************************************************************************
******* end of file **********************************************************
******************************************************************************/
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