ede/edelib2/Config.h

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2007-07-18 22:20:04 +04:00
/*
* $Id$
*
* edelib::Config - library for configuration management
* Part of Equinox Desktop Environment (EDE).
* Copyright (c) 2000-2006 EDE Authors.
*
* This program is licenced under terms of the
* GNU General Public Licence version 2 or newer.
* See COPYING for details.
*/
#ifndef _edelib_Config_h_
#define _edelib_Config_h_
/*#include "Enumerations.h"
#include "Fl_Util.h"
#include "Fl_String.h"
#include "Fl_Color.h"
#include "Fl_Ptr_List.h"
#include "Fl_Map.h"*/
#include <fltk/Color.h>
#include <deque> // TODO: port everything to char**
#include <vector> // TODO: port everything to char**
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#ifdef _WIN32_WCE
#include <fltk/x.h>
#endif
using namespace fltk;
namespace edelib {
/**
* \defgroup edelib::Config edelib::Config globals
*/
/*@{*/
/**
* Error codes for edelib::Config
*/
enum ConfErrors {
CONF_SUCCESS = 0, ///< successful operation
CONF_ERR_FILE, ///< trouble accessing config file or directory
CONF_ERR_SECTION, ///< requested section was not found
CONF_ERR_KEY, ///< requested key was not found
CONF_ERR_MEMORY, ///< memory allocation error
CONF_ERR_NOVALUE, ///< key found, but invalid value associated with it
};
/** List used for sections in Fl_Config_Section */
//FIXME
//typedef Fl_Ptr_List Fl_Config_Sections;
typedef std::deque<void*> Config_Sections;
/** Map used for entries in Fl_Config_Section */
//FIXME
//typedef Fl_String_String_Map Fl_Config_Lines;
//this is not exactly compatible, but that's the best we can do...
typedef std::vector<char*> Config_Lines;
/*@}*/
class Config;
/**
* The configuration section.
* Represents one section in config (ini) file.
* @see edelib::Config
*/
class Config_Section
{
friend class Config;
public:
Config_Section(const char* name, const char* path, Config_Section *par);
virtual ~Config_Section();
/**
* Destroys all sections and entries.
*/
virtual void clear();
/**
* Returns pointer to parent section, NULL for Fl_Config (root)
*/
Config_Section *parent() const { return m_parent; }
/**
* Returns name of section, without path.
* @see path()
*/
const char* name() const { return m_name; }
/**
* Returns path to section, without name.
* @see name()
*/
const char* path() const { return m_path; }
/**
* Returns const reference to entry map.
*/
const Config_Lines &lines() const { return m_lines; }
/**
* Returns reference to entry map.
*/
Config_Lines &lines() { return m_lines; }
/**
* Returns const reference to section list.
*/
const Config_Sections &sections() const { return m_sections; }
/**
* Returns reference to section list.
*/
Config_Sections &sections() { return m_sections; }
/**
* Find section named 'name'.
* @param section_name name of section to find
* @param recursive set true to perform recursive search.
*/
Config_Section *find(const char *section_name, bool recursive=false) const;
protected:
Config_Section *m_parent;
char *m_name, *m_path;
Config_Lines m_lines; //Line map
Config_Sections m_sections; //Section list
void write_section(int indent, FILE *fp) const;
void add_entry(const char* key, const char* value);
bool remove_entry(const char* key);
char* find_entry(const char *key) const;
};
/**
* The configuration holder. This class maybe used very easily to
* store application settings to file. Either system wide or user specific,
* depending on config type. edelib::Config is derived edelib::Config_Section, please
* take look a look at functions it provides also.
* @see edelib::Config_Section
*/
class Config : public Config_Section {
public:
/**
* Config file modes
*/
enum ConfigType {
USER=1, ///< User specific config file
SYSTEM ///< System wide config file
};
/**
* Creates/reads/writes app specific config file.
*
* LINUX:<br>
* File is created in ($home)/.ede/apps/($application)/($application).conf
* Or ($prefix)/share/ede/apps/($application)/($application).conf
*
* <br>WIN32:<br>
* ($home)\Local Settings\.ede\apps\($application)/($application).conf
* Or ($common files)\($application)\($application).conf
*
* Location depends on ConfigType 'mode', USER or SYSTEM
*
* @param vendor aplication vendor, written down to file
* @param application name, written down to file
* @param mode which mode to use
*/
Config(const char *vendor, const char *application, int mode=USER);
/**
* Access custom file in filesystem.
*
* @param filename path to config (ini) file.
* @param readfile if true, file is readed on constructor. I.e no need for read_file()
* @param createfile if true, file is created if it doesn't exists.
*/
Config(const char *filename, bool readfile=true, bool createfile=true);
/**
* Destroys config
*/
virtual ~Config();
/**
* Finds config file, depending on mode.
* NOTE: User MUST NOT free returned pointer!
*
* LINUX:<br>
* File is created in ($home)/.ede/apps/($application)/($application).conf
* Or ($prefix)/share/ede/apps/($application)/($application).conf
*
* <br>WIN32:<br>
* ($home)\Local Settings\.ede\apps\($application)/($application).conf
* Or ($common files)\($application)\($application).conf
*
* @param filename Relative filename, e.g. "myapp_config.ini"
* @param create if true, path is returned even if file is not found. Otherwise NULL if path not found.
* @param mode which mode to use
*/
static char *find_file(const char *filename, bool create=true, int mode=USER);
/**
* (re)read file. NOTE: Deletes current entries from this Fl_Config object.
* @param create if true, file is created if it doesn't exists.
* @see filename()
*/
bool read_file(bool create = true);
/**
* Flush entries to file.
* Returns true on success.
* @see filename()
*/
bool flush();
/** Returns current filename. */
const char* filename() const { return m_filename; }
/** Set new filename. You need to call read_file() to get new entries. */
void filename(const char *filename) { strncpy(m_filename, filename, strlen(filename)); }
/** Set new filename. You need to call read_file() to get new entries. */
// void filename(const Fl_String &filename) { m_filename = filename; }
/** Returns current vendor name. */
const char* vendor() const { return m_vendor; }
/** Set new vendor name. */
void vendor(const char *vendor) { strncpy(m_vendor, vendor, strlen(vendor)); }
/** Set new vendor name. */
// void vendor(const Fl_String &vendor) { m_vendor = vendor; }
/** Returns current application name. */
const char* application() const { return m_app; }
/** Set new application name. */
void application(const char *app) { strncpy(m_app, app, strlen(app)); }
/** Set new application name. */
// void application(const Fl_String &app) { m_app = app; }
/**
* Returns true, if data changed.
* call flush() to sync changes to file
* @see flush()
*/
bool is_changed() const { return m_changed; }
/**
* Set changed, forces flush() to write file.
* Even if it is not changed.
*/
void set_changed() { m_changed = true; }
/**
* Returns last error happened.
*/
int error() const { return m_error; }
/**
* Reset error, normally you don't need to call this.
*/
void reset_error() { m_error = 0; }
/**
* Return string presentation for last happened error.
*/
const char *strerror() const { return Config::strerror(m_error); }
/**
* Return error string, associated with 'errnum'
*/
static const char *strerror(int errnum);
/**
* Create new section. You can pass full path as section name.
* For example: create_section("/path/to/my/section");
* All nested sections are created automatically.
*
* Returns pointer to created section, NULL if failed.
*/
// Config_Section *create_section(const char *path) { char* tmp(path); return create_section(tmp); }
/**
* Create new section. You can pass full path as section name.
* For example: create_section("/path/to/my/section");
* All nested sections are created automatically.
*
* Returns pointer to created section, NULL if failed.
*/
Config_Section *create_section(const char* path);
/**
* Find section. You can pass full path as section name.
* For example: find_section("/path/to/my/section");
*
* Returns pointer to found section, NULL if not found.
*
* @param perfect_match is true, it returns NULL if no exact section found. Otherwise it returns last found section in path.
*/
Config_Section *find_section(const char *path, bool perfect_match=true) const;
/**
* Return child sections of section specified 'secpath'
*/
Config_Sections *section_list(const char *secpath) const { Config_Section *s=find_section(secpath); return s ? (&s->sections()) : 0; }
/**
* Return entries of section specified 'secpath'
*/
Config_Lines *line_list(const char *secpath) const { Config_Section *s=find_section(secpath); return s ? (&s->lines()) : 0; }
/**
* Set default section for read/write operations.
* NOTE: section is created, if it's not found.<BR>
* NOTE: You can pass path to section e.g "/path/to/my/section"
*/
void set_section(const char *secpath) { set_section(create_section(secpath)); }
/**
* Set default section for read/write operations.
*/
void set_section(Config_Section *sec) { m_cur_sec = sec; }
/**
* Remove entry associated with 'key' from section.
* NOTE: You can pass path to section e.g "/path/to/my/section"
*/
void remove_key(const char *section, const char *key);
/**
* Remove section specified by 'section'.
* NOTE: You can pass path to section e.g "/path/to/my/section"
*/
void remove_sec(const char *section);
/**
* Read Fl_String entry from config.
* Returns CONF_SUCCESS on success, otherwise errorcode.
* NOTE: This function assumes that current section is set with set_section().
*
* @param key Key to entry.
* @param ret Result is stored to this.
* @param def_value Default value for ret, if not found.
*/
// int read(const char *key, char* ret, const char *def_value) { return _read_string(m_cur_sec, key, ret, def_value); }
/**
* Read char* entry from config.
* Returns CONF_SUCCESS on success, otherwise errorcode.
* NOTE: This function assumes that current section is set with set_section().
*
* @param key Key to entry.
* @param ret Result is stored to this.
* @param def_value Default value for ret, if not found.
* @param size of 'ret' char* array.
*/
int read(const char *key, char *ret, const char *def_value, int size) { return _read_string(m_cur_sec, key, ret, def_value, size); }
/**
* Read char* entry from config.
* Returns CONF_SUCCESS on success, otherwise errorcode.
* NOTE: 'ret' is allocated by Fl_Confing, user MUST free 'ret' by calling free() function.
* NOTE: This function assumes that current section is set with set_section().
*
* @param key Key to entry.
* @param ret Result is stored to this.
* @param def_value Default value for ret, if not found.
*/
int read(const char *key, char *&ret, const char *def_value=0) { return _read_string(m_cur_sec, key, ret, def_value); }
/**
* Read long entry from config.
* Returns CONF_SUCCESS on success, otherwise errorcode.
* NOTE: This function assumes that current section is set with set_section().
*
* @param key Key to entry.
* @param ret Result is stored to this.
* @param def_value Default value for ret, if not found.
*/
int read(const char *key, long &ret, long def_value=0) { return _read_long(m_cur_sec, key, ret, def_value); }
/**
* Read int entry from config.
* Returns CONF_SUCCESS on success, otherwise errorcode.
* NOTE: This function assumes that current section is set with set_section().
*
* @param key Key to entry.
* @param ret Result is stored to this.
* @param def_value Default value for ret, if not found.
*/
int read(const char *key, int &ret, int def_value=0) { return _read_int(m_cur_sec, key, ret, def_value); }
/**
* Read float entry from config.
* Returns CONF_SUCCESS on success, otherwise errorcode.
* NOTE: This function assumes that current section is set with set_section().
*
* @param key Key to entry.
* @param ret Result is stored to this.
* @param def_value Default value for ret, if not found.
*/
int read(const char *key, float &ret, float def_value=0) { return _read_float(m_cur_sec, key, ret, def_value); }
/**
* Read double entry from config.
* Returns CONF_SUCCESS on success, otherwise errorcode.
* NOTE: This function assumes that current section is set with set_section().
*
* @param key Key to entry.
* @param ret Result is stored to this.
* @param def_value Default value for ret, if not found.
*/
int read(const char *key, double &ret, double def_value=0) { return _read_double(m_cur_sec, key, ret, def_value); }
/**
* Read bool entry from config.
* Returns CONF_SUCCESS on success, otherwise errorcode.
* NOTE: This function assumes that current section is set with set_section().
*
* @param key Key to entry.
* @param ret Result is stored to this.
* @param def_value Default value for ret, if not found.
*/
int read(const char *key, bool &ret, bool def_value=0) { return _read_bool(m_cur_sec, key, ret, def_value); }
/**
* Read Fl_Color entry from config.
* Returns CONF_SUCCESS on success, otherwise errorcode.
* NOTE: This function assumes that current section is set with set_section().
*
* @param key Key to entry.
* @param ret Result is stored to this.
* @param def_value Default value for ret, if not found.
*/
int read(const char *key, Color &ret, Color def_value=0) { return _read_color(m_cur_sec, key, ret, def_value); }
/**
* Write Fl_String entry to config. You must call flush() to sunc changes to file.
* Returns CONF_SUCCESS on success, otherwise errorcode.
* NOTE: This function assumes that current section is set with set_section().
*
* @param key Key to entry.
* @param value value to set. if entry with 'key' exists, value is replaced.
*/
// int write(const char *key, const Fl_String &value) { return _write_string(m_cur_sec, key, value); }
/**
* Write const char* entry to config. You must call flush() to sunc changes to file.
* Returns CONF_SUCCESS on success, otherwise errorcode.
* NOTE: This function assumes that current section is set with set_section().
*
* @param key Key to entry.
* @param value value to set. if entry with 'key' exists, value is replaced.
*/
int write(const char *key, const char *value) { return _write_string(m_cur_sec, key, value); }
/**
* Write long entry to config. You must call flush() to sunc changes to file.
* Returns CONF_SUCCESS on success, otherwise errorcode.
* NOTE: This function assumes that current section is set with set_section().
*
* @param key Key to entry.
* @param value value to set. if entry with 'key' exists, value is replaced.
*/
int write(const char *key, const long value) { return _write_long(m_cur_sec, key, value); }
/**
* Write int entry to config. You must call flush() to sunc changes to file.
* Returns CONF_SUCCESS on success, otherwise errorcode.
* NOTE: This function assumes that current section is set with set_section().
*
* @param key Key to entry.
* @param value value to set. if entry with 'key' exists, value is replaced.
*/
int write(const char *key, const int value) { return _write_int(m_cur_sec, key, value); }
/**
* Write float entry to config. You must call flush() to sunc changes to file.
* Returns CONF_SUCCESS on success, otherwise errorcode.
* NOTE: This function assumes that current section is set with set_section().
*
* @param key Key to entry.
* @param value value to set. if entry with 'key' exists, value is replaced.
*/
int write(const char *key, const float value) { return _write_float(m_cur_sec, key, value); }
/**
* Write double entry to config. You must call flush() to sunc changes to file.
* Returns CONF_SUCCESS on success, otherwise errorcode.
* NOTE: This function assumes that current section is set with set_section().
*
* @param key Key to entry.
* @param value value to set. if entry with 'key' exists, value is replaced.
*/
int write(const char *key, const double value) { return _write_double(m_cur_sec, key, value); }
/**
* Write bool entry to config. You must call flush() to sunc changes to file.
* Returns CONF_SUCCESS on success, otherwise errorcode.
* NOTE: This function assumes that current section is set with set_section().
*
* @param key Key to entry.
* @param value value to set. if entry with 'key' exists, value is replaced.
*/
int write(const char *key, const bool value) { return _write_bool(m_cur_sec, key, value); }
/**
* Write Fl_Color entry to config. You must call flush() to sunc changes to file.
* Returns CONF_SUCCESS on success, otherwise errorcode.
* NOTE: This function assumes that current section is set with set_section().
*
* @param key Key to entry.
* @param value value to set. if entry with 'key' exists, value is replaced.
*/
int write(const char *key, const Color value) { return _write_color(m_cur_sec, key, value); }
/**
* Read Fl_String entry from config.
* Returns CONF_SUCCESS on success, otherwise errorcode.
* NOTE: section must be set as first parameter!
*
* @param section Section for entry
* @param key Key to entry.
* @param ret Result is stored to this.
* @param def_value Default value for ret, if not found.
*/
// int get(const char *section, const char *key, Fl_String &ret, const char *def_value) { return _read_string(find_section(section), key, ret, def_value); }
/**
* Read char* entry from config.
* Returns CONF_SUCCESS on success, otherwise errorcode.
* NOTE: section must be set as first parameter!
*
* @param section Section for entry
* @param key Key to entry.
* @param ret Result is stored to this.
* @param def_value Default value for ret, if not found.
*/
int get(const char *section, const char *key, char *ret, const char *def_value, int size) { return _read_string(find_section(section), key, ret, def_value, size); }
/**
* Read char* entry from config.
* Returns CONF_SUCCESS on success, otherwise errorcode.
* NOTE: 'ret' is allocated by Fl_Confing, user MUST free 'ret' by calling free() function.
* NOTE: section must be set as first parameter!
*
* @param section Section for entry
* @param key Key to entry.
* @param ret Result is stored to this.
* @param def_value Default value for ret, if not found.
*/
int get(const char *section, const char *key, char *&ret, const char *def_value=0) { return _read_string(find_section(section), key, ret, def_value); }
/**
* Read long entry from config.
* Returns CONF_SUCCESS on success, otherwise errorcode.
* NOTE: section must be set as first parameter!
*
* @param section Section for entry
* @param key Key to entry.
* @param ret Result is stored to this.
* @param def_value Default value for ret, if not found.
*/
int get(const char *section, const char *key, long &ret, long def_value=0) { return _read_long(find_section(section), key, ret, def_value); }
/**
* Read int entry from config.
* Returns CONF_SUCCESS on success, otherwise errorcode.
* NOTE: section must be set as first parameter!
*
* @param section Section for entry
* @param key Key to entry.
* @param ret Result is stored to this.
* @param def_value Default value for ret, if not found.
*/
int get(const char *section, const char *key, int &ret, int def_value=0) { return _read_int(find_section(section), key, ret, def_value); }
/**
* Read float entry from config.
* Returns CONF_SUCCESS on success, otherwise errorcode.
* NOTE: section must be set as first parameter!
*
* @param section Section for entry
* @param key Key to entry.
* @param ret Result is stored to this.
* @param def_value Default value for ret, if not found.
*/
int get(const char *section, const char *key, float &ret, float def_value=0) { return _read_float(find_section(section), key, ret, def_value); }
/**
* Read double entry from config.
* Returns CONF_SUCCESS on success, otherwise errorcode.
* NOTE: section must be set as first parameter!
*
* @param section Section for entry
* @param key Key to entry.
* @param ret Result is stored to this.
* @param def_value Default value for ret, if not found.
*/
int get(const char *section, const char *key, double &ret, double def_value=0) { return _read_double(find_section(section), key, ret, def_value); }
/**
* Read bool entry from config.
* Returns CONF_SUCCESS on success, otherwise errorcode.
* NOTE: section must be set as first parameter!
*
* @param section Section for entry
* @param key Key to entry.
* @param ret Result is stored to this.
* @param def_value Default value for ret, if not found.
*/
int get(const char *section, const char *key, bool &ret, bool def_value=0) { return _read_bool(find_section(section), key, ret, def_value); }
/**
* Read Fl_Color entry from config.
* Returns CONF_SUCCESS on success, otherwise errorcode.
* NOTE: section must be set as first parameter!
*
* @param section Section for entry
* @param key Key to entry.
* @param ret Result is stored to this.
* @param def_value Default value for ret, if not found.
*/
int get(const char *section, const char *key, Color &ret, Color def_value=0) { return _read_color(find_section(section), key, ret, def_value); }
/**
* Write Fl_String entry to config. You must call flush() to sunc changes to file.
* Returns CONF_SUCCESS on success, otherwise errorcode.
* NOTE: section must be set as first parameter!
*
* @param section Section for entry
* @param key Key to entry.
* @param value value to set. if entry with 'key' exists, value is replaced.
*/
// int set(const char *section, const char *key, const Fl_String &value) { return _write_string(create_section(section), key, value); }
/**
* Write const char *entry to config. You must call flush() to sunc changes to file.
* Returns CONF_SUCCESS on success, otherwise errorcode.
* NOTE: section must be set as first parameter!
*
* @param section Section for entry
* @param key Key to entry.
* @param value value to set. if entry with 'key' exists, value is replaced.
*/
int set(const char *section, const char *key, const char *value) { return _write_string(create_section(section), key, value); }
/**
* Write long entry to config. You must call flush() to sunc changes to file.
* Returns CONF_SUCCESS on success, otherwise errorcode.
* NOTE: section must be set as first parameter!
*
* @param section Section for entry
* @param key Key to entry.
* @param value value to set. if entry with 'key' exists, value is replaced.
*/
int set(const char *section, const char *key, const long value) { return _write_long(create_section(section), key, value); }
/**
* Write int entry to config. You must call flush() to sunc changes to file.
* Returns CONF_SUCCESS on success, otherwise errorcode.
* NOTE: section must be set as first parameter!
*
* @param section Section for entry
* @param key Key to entry.
* @param value value to set. if entry with 'key' exists, value is replaced.
*/
int set(const char *section, const char *key, const int value) { return _write_int(create_section(section), key, value); }
/**
* Write float entry to config. You must call flush() to sunc changes to file.
* Returns CONF_SUCCESS on success, otherwise errorcode.
* NOTE: section must be set as first parameter!
*
* @param section Section for entry
* @param key Key to entry.
* @param value value to set. if entry with 'key' exists, value is replaced.
*/
int set(const char *section, const char *key, const float value) { return _write_float(create_section(section), key, value); }
/**
* Write bool entry to config. You must call flush() to sunc changes to file.
* Returns CONF_SUCCESS on success, otherwise errorcode.
* NOTE: section must be set as first parameter!
*
* @param section Section for entry
* @param key Key to entry.
* @param value value to set. if entry with 'key' exists, value is replaced.
*/
int set(const char *section, const char *key, const bool value) { return _write_double(create_section(section), key, value); }
/**
* Write Fl_Color entry to config. You must call flush() to sunc changes to file.
* Returns CONF_SUCCESS on success, otherwise errorcode.
* NOTE: section must be set as first parameter!
*
* @param section Section for entry
* @param key Key to entry.
* @param value value to set. if entry with 'key' exists, value is replaced.
*/
int set(const char *section, const char *key, const Color value) { return _write_color(create_section(section), key, value); }
private:
int m_error;
char* m_filename;
char *m_vendor, *m_app;
Config_Section *m_cur_sec;
bool m_changed;
//int _read_string(Fl_Config_Section *s, const char *key, Fl_String &ret, const char *def_value);
int _read_string(Config_Section *s, const char *key, char *ret, const char *def_value, int size);
int _read_string(Config_Section *s, const char *key, char *&ret, const char *def_value);
int _read_long (Config_Section *s, const char *key, long &ret, long def_value);
int _read_int (Config_Section *s, const char *key, int &ret, int def_value);
int _read_float (Config_Section *s, const char *key, float &ret, float def_value);
int _read_double(Config_Section *s, const char *key, double &ret, double def_value);
int _read_bool (Config_Section *s, const char *key, bool &ret, bool def_value);
int _read_color (Config_Section *s, const char *key, Color &ret, Color def_value);
//int _write_string(Fl_Config_Section *s, const char *key, const Fl_String &value);
int _write_string(Config_Section *s, const char *key, const char *value);
int _write_long (Config_Section *s, const char *key, const long value);
int _write_int (Config_Section *s, const char *key, const int value);
int _write_float (Config_Section *s, const char *key, const float value);
int _write_double(Config_Section *s, const char *key, const double value);
int _write_bool (Config_Section *s, const char *key, const bool value);
int _write_color (Config_Section *s, const char *key, const Color value);
};
// Backward compatibility...
static inline const char* find_config_file(const char *filename, bool create=true) {
return Config::find_file(filename, create, Config::USER);
}
}
#endif