mirror of
https://github.com/kichikuou/xsystem35-sdl2.git
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132 lines
3.2 KiB
C
132 lines
3.2 KiB
C
/*
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* filecheck.c save/load file existance and kanjicode check
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*
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* Copyright (C) 1997-1998 Masaki Chikama (Wren) <chikama@kasumi.ipl.mech.nagoya-u.ac.jp>
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* 1998- <masaki-c@is.aist-nara.ac.jp>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for 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, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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/* $Id: filecheck.c,v 1.5 2006/04/21 16:40:48 chikama Exp $ */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h>
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#include <dirent.h>
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#ifdef _WIN32
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#include <windows.h>
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#undef min
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#undef max
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#endif
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#include "filecheck.h"
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static char *saveDataPath;
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static char *get_fullpath(const char* dir, const char *filename) {
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char *fn = malloc(strlen(filename) + strlen(dir) + 3);
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if (fn == NULL) {
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return NULL;
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}
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strcpy(fn, dir);
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strcat(fn, "/");
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strcat(fn, filename);
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return fn;
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}
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/* list up file in current directory */
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/* name : save/load directory */
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void fc_init(const char *name) {
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saveDataPath = strdup(name);
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}
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#ifdef _WIN32
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FILE *fopen_utf8(const char *path_utf8, char type) {
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wchar_t wpath[PATH_MAX + 1];
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if (!MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, path_utf8, -1, wpath, PATH_MAX + 1))
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return NULL;
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return _wfopen(wpath, type == 'r' ? L"rb" : L"wb");
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}
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FILE *fc_open(const char *fname_utf8, char type) {
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char *path = get_fullpath(saveDataPath, fname_utf8);
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FILE *fp = fopen_utf8(path, type);
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if (!fp && type == 'r') {
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fp = fopen_utf8(fname_utf8, type);
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}
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free(path);
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return fp;
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}
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#else // !_WIN32
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static char *fc_search(const char *fname_utf8, const char *dir) {
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DIR *d = opendir(dir);
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if (d == NULL)
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return NULL;
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char *found = NULL;
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struct dirent *entry;
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while ((entry = readdir(d)) != NULL) {
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if (strcasecmp(fname_utf8, entry->d_name) == 0) {
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found = get_fullpath(dir, entry->d_name);
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break;
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}
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}
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closedir(d);
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return found;
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}
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FILE *fc_open(const char *fname_utf8, char type) {
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char *fullpath = fc_search(fname_utf8, saveDataPath);
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if (!fullpath) {
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if (type == 'r') {
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fullpath = fc_search(fname_utf8, ".");
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if (!fullpath)
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return NULL;
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} else {
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fullpath = get_fullpath(saveDataPath, fname_utf8);
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}
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}
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FILE *fp;
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if (type == 'w') {
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fc_backup_oldfile(fullpath);
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fp = fopen(fullpath, "wb");
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} else {
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fp = fopen(fullpath, "rb");
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}
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free(fullpath);
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return fp;
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}
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#endif // _WIN32
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void fc_backup_oldfile(const char *filename) {
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#ifndef __EMSCRIPTEN__
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char *newname;
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if (!filename) return;
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newname = malloc(strlen(filename) + 3);
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strcpy(newname, filename);
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strcat(newname, ".");
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rename(filename, newname);
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free(newname);
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#endif
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}
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