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/*
Copyright (C) 2005-2009 Michel de Boer <michel@twinklephone.com>
This program 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 2 of the License, or
(at your option) any later version.
This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "file_utils.h"
#include "util.h"
#include <fstream>
#include <string>
#include <vector>
#include <cerrno>
#include <cstdlib>
#include <unistd.h>
using namespace std;
using namespace utils;
bool utils::filecopy(const string &from, const string &to) {
ifstream from_file(from.c_str());
if (!from_file) {
return false;
}
ofstream to_file(to.c_str());
if (!to_file) {
return false;
}
to_file << from_file.rdbuf();
if (!to_file.good() || !from_file.good()) {
return false;
}
return true;
}
string utils::strip_path_from_filename(const string &filename) {
vector<string> v = split_on_last(filename, PATH_SEPARATOR);
return v.back();
}
string utils::get_path_from_filename(const string &filename) {
vector<string> v = split_on_last(filename, PATH_SEPARATOR);
if (v.size() == 1) {
// There is no path.
return "";
}
return v.front();
}
string utils::get_extension_from_filename(const string &filename) {
vector<string> v = split_on_last(filename, '.');
if (v.size() == 1) {
// There is no file extension.
return "";
} else {
return v.back();
}
}
string utils::apply_glob_to_filename(const string &filename, const string &glob) {
string name = strip_path_from_filename(filename);
string path = get_path_from_filename(filename);
string new_name = glob;
string::size_type idx = new_name.find('*');
if (idx == string::npos)
{
// The glob expression does not contain a wild card to replace.
return filename;
}
new_name.replace(new_name.begin() + idx, new_name.begin() + idx + 1, name);
string new_filename = path;
if (!new_filename.empty()) {
new_filename += PATH_SEPARATOR;
}
new_filename += new_name;
return new_filename;
}
string get_working_dir(void) {
size_t buf_size = 1024;
char *buf = (char*)malloc(buf_size);
char *dir = NULL;
while (true) {
if ((dir = getcwd(buf, buf_size)) != NULL) break;
if (errno != ERANGE) break;
// The buffer is too small.
// Avoid eternal looping.
if (buf_size > 8192) break;
// Increase the buffer size
free(buf);
buf_size *= 2;
buf = (char*)malloc(buf_size);
}
string result;
if (dir) result = dir;
free(buf);
return result;
}
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