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Location: cpp/openttd-patchpack/source/src/ini.cpp - annotation
r20114:dbf5b874b017
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(svn r25082) -Codechange [FS#5501]: Simplify some code. (adf88)
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/*
* This file is part of OpenTTD.
* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file ini.cpp Definition of the IniItem class, related to reading/writing '*.ini' files. */
#include "stdafx.h"
#include "debug.h"
#include "ini_type.h"
#include "string_func.h"
#include "fileio_func.h"
#if (defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE >= 199309L) || (defined(_XOPEN_SOURCE) && _XOPEN_SOURCE >= 500)
# define WITH_FDATASYNC
# include <unistd.h>
#endif
#ifdef WIN32
# include <windows.h>
# include <shellapi.h>
# include "core/mem_func.hpp"
#endif
/**
* Create a new ini file with given group names.
* @param list_group_names A \c NULL terminated list with group names that should be loaded as lists instead of variables. @see IGT_LIST
*/
IniFile::IniFile(const char * const *list_group_names) : IniLoadFile(list_group_names)
{
}
/**
* Save the Ini file's data to the disk.
* @param filename the file to save to.
* @return true if saving succeeded.
*/
bool IniFile::SaveToDisk(const char *filename)
{
/*
* First write the configuration to a (temporary) file and then rename
* that file. This to prevent that when OpenTTD crashes during the save
* you end up with a truncated configuration file.
*/
char file_new[MAX_PATH];
strecpy(file_new, filename, lastof(file_new));
strecat(file_new, ".new", lastof(file_new));
FILE *f = fopen(file_new, "w");
if (f == NULL) return false;
for (const IniGroup *group = this->group; group != NULL; group = group->next) {
if (group->comment) fputs(group->comment, f);
fprintf(f, "[%s]\n", group->name);
for (const IniItem *item = group->item; item != NULL; item = item->next) {
if (item->comment != NULL) fputs(item->comment, f);
/* protect item->name with quotes if needed */
if (strchr(item->name, ' ') != NULL ||
item->name[0] == '[') {
fprintf(f, "\"%s\"", item->name);
} else {
fprintf(f, "%s", item->name);
}
fprintf(f, " = %s\n", item->value == NULL ? "" : item->value);
}
}
if (this->comment) fputs(this->comment, f);
/*
* POSIX (and friends) do not guarantee that when a file is closed it is
* flushed to the disk. So we manually flush it do disk if we have the
* APIs to do so. We only need to flush the data as the metadata itself
* (modification date etc.) is not important to us; only the real data is.
*/
#ifdef WITH_FDATASYNC
int ret = fdatasync(fileno(f));
fclose(f);
if (ret != 0) return false;
#else
fclose(f);
#endif
#if defined(WIN32) || defined(WIN64)
/* Allocate space for one more \0 character. */
TCHAR tfilename[MAX_PATH + 1], tfile_new[MAX_PATH + 1];
_tcsncpy(tfilename, OTTD2FS(filename), MAX_PATH);
_tcsncpy(tfile_new, OTTD2FS(file_new), MAX_PATH);
/* SHFileOperation wants a double '\0' terminated string. */
tfilename[MAX_PATH - 1] = '\0';
tfile_new[MAX_PATH - 1] = '\0';
tfilename[_tcslen(tfilename) + 1] = '\0';
tfile_new[_tcslen(tfile_new) + 1] = '\0';
/* Rename file without any user confirmation. */
SHFILEOPSTRUCT shfopt;
MemSetT(&shfopt, 0);
shfopt.wFunc = FO_MOVE;
shfopt.fFlags = FOF_NOCONFIRMATION | FOF_NOCONFIRMMKDIR | FOF_NOERRORUI | FOF_SILENT;
shfopt.pFrom = tfile_new;
shfopt.pTo = tfilename;
SHFileOperation(&shfopt);
#else
rename(file_new, filename);
#endif
return true;
}
/* virtual */ FILE *IniFile::OpenFile(const char *filename, Subdirectory subdir, size_t *size)
{
/* Open the text file in binary mode to prevent end-of-line translations
* done by ftell() and friends, as defined by K&R. */
return FioFOpenFile(filename, "rb", subdir, size);
}
/* virtual */ void IniFile::ReportFileError(const char * const pre, const char * const buffer, const char * const post)
{
ShowInfoF("%s%s%s", pre, buffer, post);
}
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