mirror of
https://github.com/minetest/minetest.git
synced 2024-12-25 15:42:24 +01:00
79 lines
2.0 KiB
C++
79 lines
2.0 KiB
C++
/*
|
|
Minetest
|
|
Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU Lesser General Public License as published by
|
|
the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public License along
|
|
with this program; if not, write to the Free Software Foundation, Inc.,
|
|
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <string>
|
|
|
|
template <typename T>
|
|
class BasicStrfnd {
|
|
typedef std::basic_string<T> String;
|
|
String str;
|
|
size_t pos;
|
|
public:
|
|
BasicStrfnd(const String &s) : str(s), pos(0) {}
|
|
void start(const String &s) { str = s; pos = 0; }
|
|
size_t where() { return pos; }
|
|
void to(size_t i) { pos = i; }
|
|
bool at_end() { return pos >= str.size(); }
|
|
String what() { return str; }
|
|
|
|
String next(const String &sep)
|
|
{
|
|
if (pos >= str.size())
|
|
return String();
|
|
|
|
size_t n;
|
|
if (sep.empty() || (n = str.find(sep, pos)) == String::npos) {
|
|
n = str.size();
|
|
}
|
|
String ret = str.substr(pos, n - pos);
|
|
pos = n + sep.size();
|
|
return ret;
|
|
}
|
|
|
|
// Returns substr up to the next occurence of sep that isn't escaped with esc ('\\')
|
|
String next_esc(const String &sep, T esc=static_cast<T>('\\'))
|
|
{
|
|
if (pos >= str.size())
|
|
return String();
|
|
|
|
size_t n, old_p = pos;
|
|
do {
|
|
if (sep.empty() || (n = str.find(sep, pos)) == String::npos) {
|
|
pos = n = str.size();
|
|
break;
|
|
}
|
|
pos = n + sep.length();
|
|
} while (n > 0 && str[n - 1] == esc);
|
|
|
|
return str.substr(old_p, n - old_p);
|
|
}
|
|
|
|
void skip_over(const String &chars)
|
|
{
|
|
size_t p = str.find_first_not_of(chars, pos);
|
|
if (p != String::npos)
|
|
pos = p;
|
|
}
|
|
};
|
|
|
|
typedef BasicStrfnd<char> Strfnd;
|
|
typedef BasicStrfnd<wchar_t> WStrfnd;
|