156 lines
4.2 KiB
C++
156 lines
4.2 KiB
C++
/*
|
|
* Copyright 2009, 2010 Free Software Foundation, Inc.
|
|
*
|
|
* This software is distributed under the terms of the GNU Affero Public License.
|
|
* See the COPYING file in the main directory for details.
|
|
*
|
|
* This use of this software may be subject to additional restrictions.
|
|
* See the LEGAL file in the main directory for details.
|
|
|
|
This program is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU Affero General Public License as published by
|
|
the Free Software Foundation, either version 3 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 Affero General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Affero General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
*/
|
|
|
|
|
|
#ifndef CONFIGURATION_H
|
|
#define CONFIGURATION_H
|
|
|
|
#include <assert.h>
|
|
#include <map>
|
|
#include <vector>
|
|
#include <string>
|
|
#include <stdlib.h>
|
|
#include <iostream>
|
|
|
|
|
|
/** A class for configuration file errors. */
|
|
class ConfigurationTableError {};
|
|
|
|
/** An exception thrown when a given config key isn't found. */
|
|
class ConfigurationTableKeyNotFound : public ConfigurationTableError {
|
|
|
|
private:
|
|
|
|
std::string mKey;
|
|
|
|
public:
|
|
|
|
ConfigurationTableKeyNotFound(const std::string& wKey)
|
|
:mKey(wKey)
|
|
{ std::cerr << "cannot find configuration value " << mKey << std::endl; }
|
|
};
|
|
|
|
|
|
|
|
typedef std::map<std::string,std::string> StringMap;
|
|
typedef std::map<std::string,bool> StringBoolMap;
|
|
|
|
|
|
/**
|
|
A class for reading a configuration key-value table
|
|
and storing it in a map.
|
|
This class is not thread safe.
|
|
The expectation is that the configuration table will be defined
|
|
once and then used as read-only the rest of the time.
|
|
*/
|
|
class ConfigurationTable {
|
|
|
|
private:
|
|
|
|
StringMap mTable; ///< The configuration table
|
|
StringBoolMap mStatic; ///< Flags to indicate static config values.
|
|
StringBoolMap mOptional; ///< Flags to indicate optional config values.
|
|
|
|
// Static config values cannot be modified after initial file read.
|
|
// Required config values cannot be removed.
|
|
|
|
public:
|
|
|
|
bool readFile(const char* filename);
|
|
|
|
ConfigurationTable(const char* filename)
|
|
{ bool res = readFile(filename); assert(res); }
|
|
|
|
ConfigurationTable() {}
|
|
|
|
/** Return true if the key is used in the table. */
|
|
bool defines(const std::string& key) const;
|
|
|
|
/** Return true if this key is identified as static. */
|
|
bool isStatic(const std::string& key) const;
|
|
|
|
/** Make a key static. */
|
|
void makeStatic(const std::string& key) { mStatic[key] = true; }
|
|
|
|
/** Return true if this key is identified as required (!optional). */
|
|
bool isRequired(const std::string& key) const;
|
|
|
|
/** Make a key optional. */
|
|
void makeOptional(const std::string& key) { mOptional[key]=true; }
|
|
|
|
/**
|
|
Get a string parameter from the table.
|
|
Throw ConfigurationTableKeyNotFound if not found.
|
|
*/
|
|
const char *getStr(const std::string& key) const;
|
|
|
|
/**
|
|
Get a numeric parameter from the table.
|
|
Throw ConfigurationTableKeyNotFound if not found.
|
|
*/
|
|
long getNum(const std::string& key) const { return strtol(getStr(key),NULL,10); }
|
|
|
|
/**
|
|
Get a numeric vector from the table.
|
|
*/
|
|
std::vector<unsigned> getVector(const std::string& key) const;
|
|
|
|
/** Set or change a value in the table. */
|
|
bool set(const std::string& key, const std::string& value);
|
|
|
|
/** Set or change a value in the table. */
|
|
bool set(const std::string& key, long value);
|
|
|
|
/**
|
|
Remove a key from the table.
|
|
Will not remove static or required values.
|
|
@param key The key of the item to be deleted.
|
|
@return true if anything was actually removed.
|
|
*/
|
|
bool unset(const std::string &key);
|
|
|
|
/** Dump the table to a stream. */
|
|
void dump(std::ostream&) const;
|
|
|
|
/** Write the table to a stream, with directives. */
|
|
void write(std::ostream&) const;
|
|
|
|
/** Raw iterator. */
|
|
StringMap::const_iterator begin() const { return mTable.begin(); }
|
|
|
|
/** End check. */
|
|
StringMap::const_iterator end() const { return mTable.end(); }
|
|
|
|
|
|
private:
|
|
|
|
void processDirective(const std::string& line);
|
|
|
|
};
|
|
|
|
#endif
|
|
|
|
|
|
// vim: ts=4 sw=4
|