+#include <fstream>
#include <msp/error.h>
+#include <msp/path/utils.h>
+#include <msp/time/utils.h>
#include "config.h"
using namespace std;
using namespace Msp;
+/**
+Adds a configuration option.
+
+@param n Option name
+@param v Default value
+@param d Description
+*/
void Config::add_option(const string &n, const string &v, const string &d)
{
options.insert(OptionMap::value_type(n, Option(n, v, d)));
}
+/**
+Gets the given option from the configuration. If the option doesn't exist,
+an Exception is thrown.
+*/
const Config::Option &Config::get_option(const string &name) const
{
OptionMap::const_iterator i=options.find(name);
return i->second;
}
+/**
+Checks whether an option with the given name exists.
+*/
bool Config::is_option(const string &name) const
{
return options.count(name);
}
+/**
+Processes options from the given raw option map. Nonexistent options are
+ignored. If any options were changed, the mtime of the configuration is updated
+to the current time.
+
+@param opts A map to process options from
+
+@return Whether any option values were changed
+*/
bool Config::process(const RawOptionMap &opts)
{
bool changed=false;
}
}
+ if(changed)
+ mtime=Time::now();
+
return changed;
}
+/**
+Loads configuration from a file, if it exists.
+*/
+void Config::load(const Path::Path &fn)
+{
+ ifstream in(fn.str().c_str());
+ if(!in) return;
+
+ struct stat st;
+ Path::stat(fn, st);
+ mtime=Time::TimeStamp::from_unixtime(st.st_mtime);
+
+ Parser::Parser parser(in, fn.str());
+ Loader loader(*this);
+ loader.load(parser);
+}
+
+void Config::save(const Path::Path &fn) const
+{
+ ofstream out(fn.str().c_str());
+ if(!out) return;
+
+ for(OptionMap::const_iterator i=options.begin(); i!=options.end(); ++i)
+ out<<"option \""<<i->second.name<<"\" \""<<i->second.value<<"\";\n";
+}
+
Config::Option::Option(const string &n, const string &v, const string &d):
name(n),
defv(v),
descr(d),
value(v)
{ }
+
+Config::Loader::Loader(Config &c):
+ conf(c)
+{
+ add("option", &Loader::option);
+}
+
+void Config::Loader::option(const string &n, const string &v)
+{
+ OptionMap::iterator i=conf.options.find(n);
+ if(i!=conf.options.end())
+ i->second.value=v;
+}