/* Copyright (C) 2014 J.F.Dockes
* 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, write to the
* Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef _UPMPDUTILS_H_X_INCLUDED_
#define _UPMPDUTILS_H_X_INCLUDED_
#include <sys/types.h> // for pid_t
#include <string> // for string
#include <unordered_map> // for unordered_map
#include <vector> // for vector
class UpSong;
/** Read protocol info file. This contains the connection manager protocol info data
*
* We strip white-space from beginning/ends of lines, and allow
* #-started comments (on a line alone only, comments after data not allowed).
*/
bool read_protocolinfo(const std::string& fn, std::string& out);
/**
* Read file into string.
* @return true for ok, false else
*/
extern bool file_to_string(const std::string &filename, std::string &data,
std::string *reason = 0);
extern void path_catslash(std::string &s);
extern std::string path_cat(const std::string &s1, const std::string &s2);
extern void trimstring(std::string &s, const char *ws = " \t");
extern std::string path_tildexpand(const std::string &s);
extern void stringToTokens(const std::string &s, std::vector<std::string> &tokens,
const std::string &delims = " \t", bool skipinit=true);
extern bool path_makepath(const std::string& path, int mode);
// Convert between db value to percent values (Get/Set Volume and VolumeDb)
extern int percentodbvalue(int value);
extern int dbvaluetopercent(int dbvalue);
extern bool sleepms(int ms);
// Return mapvalue or null strings, for maps where absent entry and
// null data are equivalent
extern const std::string& mapget(
const std::unordered_map<std::string, std::string>& im,
const std::string& k);
// Format a didl fragment from MPD status data
extern std::string didlmake(const UpSong& song);
// Replace the first occurrence of regexp. cxx11 regex does not work
// that well yet...
extern std::string regsub1(const std::string& sexp, const std::string& input,
const std::string& repl);
// Return map with "newer" elements which differ from "old". Old may
// have fewer elts than "newer" (e.g. may be empty), we use the
// "newer" entries for diffing
extern std::unordered_map<std::string, std::string>
diffmaps(const std::unordered_map<std::string, std::string>& old,
const std::unordered_map<std::string, std::string>& newer);
/// Lock/pid file class. From Recoll
class Pidfile {
public:
Pidfile(const std::string& path) : m_path(path), m_fd(-1) {}
~Pidfile();
/// Open/create the pid file.
/// @return 0 if ok, > 0 for pid of existing process, -1 for other error.
pid_t open();
/// Write pid into the pid file
/// @return 0 ok, -1 error
int write_pid();
/// Close the pid file (unlocks)
int close();
/// Delete the pid file
int remove();
const std::string& getreason() {return m_reason;}
private:
std::string m_path;
int m_fd;
std::string m_reason;
pid_t read_pid();
int flopen();
};
#endif /* _UPMPDUTILS_H_X_INCLUDED_ */