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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
/*
* Ceph - scalable distributed file system
*
* Copyright (C) 2011 New Dream Network
*
* This is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software
* Foundation. See file COPYING.
*
*/
#ifndef CEPH_CONFUTILS_H
#define CEPH_CONFUTILS_H
#include <deque>
#include <map>
#include <set>
#include <string>
/*
* Ceph configuration file support.
*
* This class loads an INI-style configuration from a file or bufferlist, and
* holds it in memory. In general, an INI configuration file is composed of
* sections, which contain key/value pairs. You can put comments on the end of
* lines by using either a hash mark (#) or the semicolon (;).
*
* You can get information out of ConfFile by calling get_key or by examining
* individual sections.
*
* This class could be extended to support modifying configuration files and
* writing them back out without too much difficulty. Currently, this is not
* implemented, and the file is read-only.
*/
class ConfLine {
public:
ConfLine(const std::string &key_, const std::string &val_,
const std::string &newsection_, const std::string &comment_, int line_no_);
bool operator<(const ConfLine &rhs) const;
friend std::ostream &operator<<(std::ostream& oss, const ConfLine &l);
std::string key, val, newsection;
};
class ConfSection {
public:
typedef std::set <ConfLine>::const_iterator const_line_iter_t;
std::set <ConfLine> lines;
};
class ConfFile {
public:
typedef std::map <std::string, ConfSection>::iterator section_iter_t;
typedef std::map <std::string, ConfSection>::const_iterator const_section_iter_t;
ConfFile();
~ConfFile();
void clear();
int parse_file(const std::string &fname, std::deque<std::string> *errors, std::ostream *warnings);
int read(const std::string §ion, const std::string &key,
std::string &val) const;
const_section_iter_t sections_begin() const;
const_section_iter_t sections_end() const;
static void trim_whitespace(std::string &str, bool strip_internal);
static std::string normalize_key_name(const std::string &key);
friend std::ostream &operator<<(std::ostream &oss, const ConfFile &cf);
private:
void load_from_buffer(const char *buf, size_t sz,
std::deque<std::string> *errors, std::ostream *warnings);
static ConfLine* process_line(int line_no, const char *line,
std::deque<std::string> *errors);
std::map <std::string, ConfSection> sections;
};
#endif
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