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46 lines
1.5 KiB
C
46 lines
1.5 KiB
C
/*
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* This file is part of the FITSmaniplib project.
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* Copyright 2019 Edward V. Emelianov <edward.emelianoff@gmail.com>, <eddy@sao.ru>.
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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 3 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, see <http://www.gnu.org/licenses/>.
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*/
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#include "FITSmanip.h"
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#include "local.h"
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#include <errno.h>
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#include <sys/stat.h>
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/**
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* Return TRUE if file _name_ not exists
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*/
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bool file_is_absent(char *name){
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struct stat filestat;
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if(!stat(name, &filestat)) return FALSE;
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if(errno == ENOENT) return TRUE;
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return FALSE;
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}
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/**
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* find the first non-existing filename like prefixXXXX.suffix & put it into buff
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*/
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char* make_filename(char *buff, size_t buflen, char *prefix, char *suffix){
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int num;
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for(num = 1; num < 10000; ++num){
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if(snprintf(buff, buflen, "%s_%04d.%s", prefix, num, suffix) < 1)
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return NULL;
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if(file_is_absent(buff)) // OK, file not exists
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return buff;
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}
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return NULL;
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}
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