photo-renamer.cpp

/*
    photo-renamer
    Copyright (C) 2018  ReimuNotMoe <reimuhatesfdt@gmail.com>

    photo-renamer 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, either version 3 of the License, or
    (at your option) any later version.

    photo-renamer 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 photo-renamer.  If not, see <http://www.gnu.org/licenses/>.
*/

#include <cstdio>
#include <cstdlib>
#include <dirent.h>

#include <sys/types.h>
#include <string>
#include <cstring>

using namespace std;

int main(int argc, char **argv) {

	DIR *thisdir = opendir(".");

	dirent *thisent;

	while ((thisent = readdir(thisdir))) {
		printf("%s => ", thisent->d_name);

		string newname;


		size_t ent_len = strlen(thisent->d_name);

		for (size_t j=0; j<ent_len; j++) {
			if (isdigit(thisent->d_name[j])) {
				newname += thisent->d_name[j];
				if (newname.size() == 8)
					newname += '_';

			}
		}

		if (newname.empty()) {
			puts("Bad");
			continue;
		}


		char *dotplace = strrchr(thisent->d_name, '.');

		if (!dotplace){
			puts("Bad");
			continue;
		}

		string suffix = dotplace;



		if (newname.size() == 15) {
			string newfullname;

			if (argv[1])
				newfullname += "Screenshot";
			else
				newfullname += "IMG";

			newfullname += "_";

			newfullname += newname;
//			newfullname += ".";
			newfullname += suffix;

			puts(newfullname.c_str());

			rename(thisent->d_name, newfullname.c_str());
		}
	}

}