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libconfigcpp.c++
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libconfigcpp.c++
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/* ----------------------------------------------------------------------------
libconfig - A library for processing structured configuration files
Copyright (C) 2005-2018 Mark A Lindner
This file is part of libconfig.
This library 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 library 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 Library General Public
License along with this library; if not, see
<http://www.gnu.org/licenses/>.
----------------------------------------------------------------------------
*/
#include "libconfig.h++"
#ifdef _MSC_VER
#pragma warning (disable: 4996)
#endif
#include "wincompat.h"
#include "libconfig.h"
#include <cstring>
#include <cstdlib>
#include <sstream>
namespace libconfig {
// ---------------------------------------------------------------------------
static const char **__include_func(config_t *config,
const char *include_dir,
const char *path,
const char **error)
{
(void)include_dir;
Config *self = reinterpret_cast<Config *>(config_get_hook(config));
return(self->evaluateIncludePath(path, error));
}
// ---------------------------------------------------------------------------
ParseException::ParseException(const char *file, int line, const char *error)
: _file(file ? ::strdup(file) : NULL), _line(line), _error(error)
{
}
// ---------------------------------------------------------------------------
ParseException::ParseException(const ParseException &other)
: ConfigException(other),
_file(other._file ? ::strdup(other._file) : NULL),
_line(other._line),
_error(other._error)
{
}
// ---------------------------------------------------------------------------
ParseException::~ParseException() LIBCONFIGXX_NOEXCEPT
{
::free((void *)_file);
}
// ---------------------------------------------------------------------------
const char *ParseException::what() const LIBCONFIGXX_NOEXCEPT
{
return("ParseException");
}
// ---------------------------------------------------------------------------
static int __toTypeCode(Setting::Type type)
{
int typecode;
switch(type)
{
case Setting::TypeGroup:
typecode = CONFIG_TYPE_GROUP;
break;
case Setting::TypeInt:
typecode = CONFIG_TYPE_INT;
break;
case Setting::TypeInt64:
typecode = CONFIG_TYPE_INT64;
break;
case Setting::TypeFloat:
typecode = CONFIG_TYPE_FLOAT;
break;
case Setting::TypeString:
typecode = CONFIG_TYPE_STRING;
break;
case Setting::TypeBoolean:
typecode = CONFIG_TYPE_BOOL;
break;
case Setting::TypeArray:
typecode = CONFIG_TYPE_ARRAY;
break;
case Setting::TypeList:
typecode = CONFIG_TYPE_LIST;
break;
default:
typecode = CONFIG_TYPE_NONE;
}
return(typecode);
}
// ---------------------------------------------------------------------------
static void __constructPath(const Setting &setting,
std::stringstream &path)
{
// head recursion to print path from root to target
if(! setting.isRoot())
{
__constructPath(setting.getParent(), path);
if(path.tellp() > 0)
path << '.';
const char *name = setting.getName();
if(name)
path << name;
else
path << '[' << setting.getIndex() << ']';
}
}
// ---------------------------------------------------------------------------
SettingException::SettingException(const Setting &setting)
{
std::stringstream sstr;
__constructPath(setting, sstr);
_path = ::strdup(sstr.str().c_str());
}
// ---------------------------------------------------------------------------
SettingException::SettingException(const Setting &setting, int idx)
{
std::stringstream sstr;
__constructPath(setting, sstr);
sstr << ".[" << idx << "]";
_path = ::strdup(sstr.str().c_str());
}
// ---------------------------------------------------------------------------
SettingException::SettingException(const Setting &setting, const char *name)
{
std::stringstream sstr;
__constructPath(setting, sstr);
sstr << '.' << name;
_path = ::strdup(sstr.str().c_str());
}
// ---------------------------------------------------------------------------
SettingException::SettingException(const char *path)
{
_path = ::strdup(path);
}
// ---------------------------------------------------------------------------
const char *SettingException::getPath() const
{
return(_path);
}
// ---------------------------------------------------------------------------
SettingException::SettingException(const SettingException &other)
: ConfigException(other)
{
_path = ::strdup(other._path);
}
// ---------------------------------------------------------------------------
SettingException &SettingException::operator=(const SettingException &other)
{
::free(_path);
_path = ::strdup(other._path);
return(*this);
}
// ---------------------------------------------------------------------------
const char *SettingException::what() const LIBCONFIGXX_NOEXCEPT
{
return("SettingException");
}
// ---------------------------------------------------------------------------
SettingException::~SettingException() LIBCONFIGXX_NOEXCEPT
{
::free(_path);
}
// ---------------------------------------------------------------------------
SettingTypeException::SettingTypeException(const Setting &setting)
: SettingException(setting)
{
}
// ---------------------------------------------------------------------------
SettingTypeException::SettingTypeException(const Setting &setting, int idx)
: SettingException(setting, idx)
{
}
// ---------------------------------------------------------------------------
SettingTypeException::SettingTypeException(const Setting &setting,
const char *name)
: SettingException(setting, name)
{
}
// ---------------------------------------------------------------------------
const char *SettingTypeException::what() const LIBCONFIGXX_NOEXCEPT
{
return("SettingTypeException");
}
// ---------------------------------------------------------------------------
SettingNotFoundException::SettingNotFoundException(const Setting &setting,
int idx)
: SettingException(setting, idx)
{
}
// ---------------------------------------------------------------------------
SettingNotFoundException::SettingNotFoundException(const Setting &setting,
const char *name)
: SettingException(setting, name)
{
}
// ---------------------------------------------------------------------------
SettingNotFoundException::SettingNotFoundException(const char *path)
: SettingException(path)
{
}
// ---------------------------------------------------------------------------
const char *SettingNotFoundException::what() const LIBCONFIGXX_NOEXCEPT
{
return("SettingNotFoundException");
}
// ---------------------------------------------------------------------------
SettingNameException::SettingNameException(const Setting &setting,
const char *name)
: SettingException(setting, name)
{
}
// ---------------------------------------------------------------------------
const char *SettingNameException::what() const LIBCONFIGXX_NOEXCEPT
{
return("SettingNameException");
}
// ---------------------------------------------------------------------------
const char *FileIOException::what() const LIBCONFIGXX_NOEXCEPT
{
return("FileIOException");
}
// ---------------------------------------------------------------------------
void Config::ConfigDestructor(void *arg)
{
delete reinterpret_cast<Setting *>(arg);
}
// ---------------------------------------------------------------------------
Config::Config()
: _defaultFormat(Setting::FormatDefault)
{
_config = new config_t;
config_init(_config);
config_set_hook(_config, reinterpret_cast<void *>(this));
config_set_destructor(_config, ConfigDestructor);
config_set_include_func(_config, __include_func);
}
// ---------------------------------------------------------------------------
Config::~Config()
{
config_destroy(_config);
delete _config;
}
// ---------------------------------------------------------------------------
void Config::clear()
{
config_clear(_config);
}
// ---------------------------------------------------------------------------
void Config::setOptions(int options)
{
config_set_options(_config, options);
}
// ---------------------------------------------------------------------------
int Config::getOptions() const
{
return(config_get_options(_config));
}
// ---------------------------------------------------------------------------
void Config::setOption(Config::Option option, bool flag)
{
config_set_option(_config, (int)option, flag ? CONFIG_TRUE : CONFIG_FALSE);
}
// ---------------------------------------------------------------------------
bool Config::getOption(Config::Option option) const
{
return(config_get_option(_config, (int)option) == CONFIG_TRUE);
}
// ---------------------------------------------------------------------------
void Config::setDefaultFormat(Setting::Format format)
{
if(format == Setting::FormatHex)
_defaultFormat = Setting::FormatHex;
else
_defaultFormat = Setting::FormatDefault;
config_set_default_format(_config, static_cast<short>(_defaultFormat));
}
// ---------------------------------------------------------------------------
void Config::setTabWidth(unsigned short width)
{
config_set_tab_width(_config, width);
}
// ---------------------------------------------------------------------------
unsigned short Config::getTabWidth() const
{
return(config_get_tab_width(_config));
}
// ---------------------------------------------------------------------------
void Config::setFloatPrecision(unsigned short digits)
{
return (config_set_float_precision(_config,digits));
}
// ---------------------------------------------------------------------------
unsigned short Config::getFloatPrecision() const
{
return (config_get_float_precision(_config));
}
// ---------------------------------------------------------------------------
void Config::setIncludeDir(const char *includeDir)
{
config_set_include_dir(_config, includeDir);
}
// ---------------------------------------------------------------------------
const char *Config::getIncludeDir() const
{
return(config_get_include_dir(_config));
}
// ---------------------------------------------------------------------------
const char **Config::evaluateIncludePath(const char *path, const char **error)
{
return(config_default_include_func(_config, getIncludeDir(), path, error));
}
// ---------------------------------------------------------------------------
void Config::handleError() const
{
switch(config_error_type(_config))
{
case CONFIG_ERR_NONE:
break;
case CONFIG_ERR_PARSE:
throw ParseException(config_error_file(_config),
config_error_line(_config),
config_error_text(_config));
break;
case CONFIG_ERR_FILE_IO:
default:
throw FileIOException();
}
}
// ---------------------------------------------------------------------------
void Config::read(FILE *stream)
{
if(! config_read(_config, stream))
handleError();
}
// ---------------------------------------------------------------------------
void Config::readString(const char *str)
{
if(! config_read_string(_config, str))
handleError();
}
// ---------------------------------------------------------------------------
void Config::write(FILE *stream) const
{
config_write(_config, stream);
}
// ---------------------------------------------------------------------------
void Config::readFile(const char *filename)
{
if(! config_read_file(_config, filename))
handleError();
}
// ---------------------------------------------------------------------------
void Config::writeFile(const char *filename)
{
if(! config_write_file(_config, filename))
handleError();
}
// ---------------------------------------------------------------------------
Setting & Config::lookup(const char *path) const
{
config_setting_t *s = config_lookup(_config, path);
if(! s)
throw SettingNotFoundException(path);
return(Setting::wrapSetting(s));
}
// ---------------------------------------------------------------------------
bool Config::exists(const char *path) const
{
config_setting_t *s = config_lookup(_config, path);
return(s != NULL);
}
// ---------------------------------------------------------------------------
#define CONFIG_LOOKUP_NO_EXCEPTIONS(P, T, V) \
try \
{ \
Setting &s = lookup(P); \
V = (T)s; \
return(true); \
} \
catch(const ConfigException &) \
{ \
return(false); \
}
// ---------------------------------------------------------------------------
bool Config::lookupValue(const char *path, bool &value) const
{
CONFIG_LOOKUP_NO_EXCEPTIONS(path, bool, value);
}
// ---------------------------------------------------------------------------
bool Config::lookupValue(const char *path, int &value) const
{
CONFIG_LOOKUP_NO_EXCEPTIONS(path, int, value);
}
// ---------------------------------------------------------------------------
bool Config::lookupValue(const char *path, unsigned int &value) const
{
CONFIG_LOOKUP_NO_EXCEPTIONS(path, unsigned int, value);
}
// ---------------------------------------------------------------------------
bool Config::lookupValue(const char *path, long long &value) const
{
CONFIG_LOOKUP_NO_EXCEPTIONS(path, long long, value);
}
// ---------------------------------------------------------------------------
bool Config::lookupValue(const char *path, unsigned long long &value) const
{
CONFIG_LOOKUP_NO_EXCEPTIONS(path, unsigned long long, value);
}
// ---------------------------------------------------------------------------
bool Config::lookupValue(const char *path, double &value) const
{
CONFIG_LOOKUP_NO_EXCEPTIONS(path, double, value);
}
// ---------------------------------------------------------------------------
bool Config::lookupValue(const char *path, float &value) const
{
CONFIG_LOOKUP_NO_EXCEPTIONS(path, float, value);
}
// ---------------------------------------------------------------------------
bool Config::lookupValue(const char *path, const char *&value) const
{
CONFIG_LOOKUP_NO_EXCEPTIONS(path, const char *, value);
}
// ---------------------------------------------------------------------------
bool Config::lookupValue(const char *path, std::string &value) const
{
CONFIG_LOOKUP_NO_EXCEPTIONS(path, const char *, value);
}
// ---------------------------------------------------------------------------
Setting & Config::getRoot() const
{
return(Setting::wrapSetting(config_root_setting(_config)));
}
// ---------------------------------------------------------------------------
Setting::Setting(config_setting_t *setting)
: _setting(setting)
{
switch(config_setting_type(setting))
{
case CONFIG_TYPE_GROUP:
_type = TypeGroup;
break;
case CONFIG_TYPE_INT:
_type = TypeInt;
break;
case CONFIG_TYPE_INT64:
_type = TypeInt64;
break;
case CONFIG_TYPE_FLOAT:
_type = TypeFloat;
break;
case CONFIG_TYPE_STRING:
_type = TypeString;
break;
case CONFIG_TYPE_BOOL:
_type = TypeBoolean;
break;
case CONFIG_TYPE_ARRAY:
_type = TypeArray;
break;
case CONFIG_TYPE_LIST:
_type = TypeList;
break;
case CONFIG_TYPE_NONE:
default:
_type = TypeNone;
break;
}
switch(config_setting_get_format(setting))
{
case CONFIG_FORMAT_HEX:
_format = FormatHex;
break;
case CONFIG_FORMAT_DEFAULT:
default:
_format = FormatDefault;
break;
}
}
// ---------------------------------------------------------------------------
Setting::~Setting()
{
_setting = NULL;
}
// ---------------------------------------------------------------------------
void Setting::setFormat(Format format)
{
if((_type == TypeInt) || (_type == TypeInt64))
{
if(format == FormatHex)
_format = FormatHex;
else
_format = FormatDefault;
}
else
_format = FormatDefault;
config_setting_set_format(_setting, static_cast<short>(_format));
}
// ---------------------------------------------------------------------------
Setting::operator bool() const
{
assertType(TypeBoolean);
return(config_setting_get_bool(_setting) ? true : false);
}
// ---------------------------------------------------------------------------
Setting::operator int() const
{
assertType(TypeInt);
return(config_setting_get_int(_setting));
}
// ---------------------------------------------------------------------------
Setting::operator unsigned int() const
{
assertType(TypeInt);
int v = config_setting_get_int(_setting);
return(static_cast<unsigned int>(v));
}
// ---------------------------------------------------------------------------
Setting::operator long() const
{
if(sizeof(long) == sizeof(long long))
return operator long long();
else
return operator int();
}
// ---------------------------------------------------------------------------
Setting::operator unsigned long() const
{
if(sizeof(long) == sizeof(long long))
return operator unsigned long long();
else
return operator unsigned int();
}
// ---------------------------------------------------------------------------
Setting::operator long long() const
{
assertType(TypeInt64);
return(config_setting_get_int64(_setting));
}
// ---------------------------------------------------------------------------
Setting::operator unsigned long long() const
{
assertType(TypeInt64);
long long v = config_setting_get_int64(_setting);
return(static_cast<unsigned long long>(v));
}
// ---------------------------------------------------------------------------
Setting::operator double() const
{
assertType(TypeFloat);
return(config_setting_get_float(_setting));
}
// ---------------------------------------------------------------------------
Setting::operator float() const
{
assertType(TypeFloat);
// may cause loss of precision:
return(static_cast<float>(config_setting_get_float(_setting)));
}
// ---------------------------------------------------------------------------
Setting::operator const char *() const
{
assertType(TypeString);
return(config_setting_get_string(_setting));
}
// ---------------------------------------------------------------------------
Setting::operator std::string() const
{
assertType(TypeString);
const char *s = config_setting_get_string(_setting);
std::string str;
if(s)
str = s;
return(str);
}
// ---------------------------------------------------------------------------
Setting & Setting::operator=(bool value)
{
assertType(TypeBoolean);
config_setting_set_bool(_setting, value);
return(*this);
}
// ---------------------------------------------------------------------------
Setting & Setting::operator=(int value)
{
assertType(TypeInt);
config_setting_set_int(_setting, value);
return(*this);
}
// ---------------------------------------------------------------------------
Setting & Setting::operator=(long value)
{
if(sizeof(long) == sizeof(long long))
return(operator=(static_cast<long long>(value)));
else
return(operator=(static_cast<int>(value)));
}
// ---------------------------------------------------------------------------
Setting & Setting::operator=(const long long &value)
{
assertType(TypeInt64);
config_setting_set_int64(_setting, value);
return(*this);
}
// ---------------------------------------------------------------------------
Setting & Setting::operator=(const double &value)
{
assertType(TypeFloat);
config_setting_set_float(_setting, value);
return(*this);
}
// ---------------------------------------------------------------------------
Setting & Setting::operator=(float value)
{
assertType(TypeFloat);
double cvalue = static_cast<double>(value);
config_setting_set_float(_setting, cvalue);
return(*this);
}
// ---------------------------------------------------------------------------
Setting & Setting::operator=(const char *value)
{
assertType(TypeString);
config_setting_set_string(_setting, value);
return(*this);
}
// ---------------------------------------------------------------------------
Setting & Setting::operator=(const std::string &value)
{
assertType(TypeString);
config_setting_set_string(_setting, value.c_str());
return(*this);
}
// ---------------------------------------------------------------------------
Setting & Setting::lookup(const char *path) const
{
assertType(TypeGroup);
config_setting_t *setting = config_setting_lookup(_setting, path);
if(! setting)
throw SettingNotFoundException(*this, path);
return(wrapSetting(setting));
}
// ---------------------------------------------------------------------------
Setting & Setting::operator[](const char *name) const
{
assertType(TypeGroup);
config_setting_t *setting = config_setting_get_member(_setting, name);
if(! setting)
throw SettingNotFoundException(*this, name);
return(wrapSetting(setting));
}
// ---------------------------------------------------------------------------
Setting & Setting::operator[](int i) const
{
if((_type != TypeArray) && (_type != TypeGroup) && (_type != TypeList))
throw SettingTypeException(*this, i);
config_setting_t *setting = config_setting_get_elem(_setting, i);
if(! setting)
throw SettingNotFoundException(*this, i);
return(wrapSetting(setting));
}
// ---------------------------------------------------------------------------
#define SETTING_LOOKUP_NO_EXCEPTIONS(K, T, V) \
try \
{ \
Setting &s = operator[](K); \
V = (T)s; \
return(true); \
} \
catch(const ConfigException &) \
{ \
return(false); \
}
// ---------------------------------------------------------------------------
bool Setting::lookupValue(const char *name, bool &value) const
{
SETTING_LOOKUP_NO_EXCEPTIONS(name, bool, value);
}
// ---------------------------------------------------------------------------
bool Setting::lookupValue(const char *name, int &value) const
{
SETTING_LOOKUP_NO_EXCEPTIONS(name, int, value);
}
// ---------------------------------------------------------------------------
bool Setting::lookupValue(const char *name, unsigned int &value) const
{
SETTING_LOOKUP_NO_EXCEPTIONS(name, unsigned int, value);
}
// ---------------------------------------------------------------------------
bool Setting::lookupValue(const char *name, long long &value) const
{
SETTING_LOOKUP_NO_EXCEPTIONS(name, long long, value);
}
// ---------------------------------------------------------------------------
bool Setting::lookupValue(const char *name, unsigned long long &value) const
{
SETTING_LOOKUP_NO_EXCEPTIONS(name, unsigned long long, value);
}
// ---------------------------------------------------------------------------
bool Setting::lookupValue(const char *name, double &value) const
{
SETTING_LOOKUP_NO_EXCEPTIONS(name, double, value);
}
// ---------------------------------------------------------------------------
bool Setting::lookupValue(const char *name, float &value) const
{
SETTING_LOOKUP_NO_EXCEPTIONS(name, float, value);
}
// ---------------------------------------------------------------------------
bool Setting::lookupValue(const char *name, const char *&value) const
{
SETTING_LOOKUP_NO_EXCEPTIONS(name, const char *, value);
}
// ---------------------------------------------------------------------------
bool Setting::lookupValue(const char *name, std::string &value) const
{
SETTING_LOOKUP_NO_EXCEPTIONS(name, const char *, value);
}
// ---------------------------------------------------------------------------
bool Setting::exists(const char *name) const