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#include "globals.hh"
#include <map>
#include <algorithm>
string nixStore = "/UNINIT";
string nixDataDir = "/UNINIT";
string nixLogDir = "/UNINIT";
string nixStateDir = "/UNINIT";
string nixDBPath = "/UNINIT";
string nixConfDir = "/UNINIT";
bool keepFailed = false;
bool keepGoing = false;
bool tryFallback = false;
Verbosity buildVerbosity = lvlInfo;
unsigned int maxBuildJobs = 1;
bool readOnlyMode = false;
string thisSystem = "unset";
static bool settingsRead = false;
static map<string, Strings> settings;
string & at(Strings & ss, unsigned int n)
{
Strings::iterator i = ss.begin();
advance(i, n);
return *i;
}
static void readSettings()
{
Path settingsFile = (format("%1%/%2%") % nixConfDir % "nix.conf").str();
if (!pathExists(settingsFile)) return;
string contents = readFile(settingsFile);
unsigned int pos = 0;
while (pos < contents.size()) {
string line;
while (pos < contents.size() && contents[pos] != '\n')
line += contents[pos++];
pos++;
string::size_type hash = line.find('#');
if (hash != string::npos)
line = string(line, 0, hash);
Strings tokens = tokenizeString(line);
if (tokens.empty()) continue;
if (tokens.size() < 2 || at(tokens, 1) != "=")
throw Error(format("illegal configuration line `%1%' in `%2%'") % line % settingsFile);
string name = at(tokens, 0);
Strings::iterator i = tokens.begin();
advance(i, 2);
settings[name] = Strings(i, tokens.end());
};
settingsRead = true;
}
Strings querySetting(const string & name, const Strings & def)
{
if (!settingsRead) readSettings();
map<string, Strings>::iterator i = settings.find(name);
return i == settings.end() ? def : i->second;
}
string querySetting(const string & name, const string & def)
{
Strings defs;
defs.push_back(def);
Strings value = querySetting(name, defs);
if (value.size() != 1)
throw Error(format("configuration option `%1%' should not be a list") % name);
return value.front();
}
bool queryBoolSetting(const string & name, bool def)
{
string v = querySetting(name, def ? "true" : "false");
if (v == "true") return true;
else if (v == "false") return false;
else throw Error(format("configuration option `%1%' should be either `true' or `false', not `%2%'")
% name % v);
}
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