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#include "config.h"
#include "globals.hh"
#include "util.hh"
#include <map>
#include <algorithm>
namespace nix {
string nixStore = "/UNINIT";
string nixDataDir = "/UNINIT";
string nixLogDir = "/UNINIT";
string nixStateDir = "/UNINIT";
string nixDBPath = "/UNINIT";
string nixConfDir = "/UNINIT";
string nixLibexecDir = "/UNINIT";
string nixBinDir = "/UNINIT";
bool keepFailed = false;
bool keepGoing = false;
bool tryFallback = false;
Verbosity buildVerbosity = lvlError;
unsigned int maxBuildJobs = 1;
unsigned int buildCores = 1;
bool readOnlyMode = false;
string thisSystem = "unset";
time_t maxSilentTime = 0;
time_t buildTimeout = 0;
Paths substituters;
bool useBuildHook = true;
bool printBuildTrace = false;
static bool settingsRead = false;
static std::map<string, Strings> settings;
/* Overriden settings. */
std::map<string, Strings> settingsCmdline;
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());
};
settings.insert(settingsCmdline.begin(), settingsCmdline.end());
settingsRead = true;
}
Strings querySetting(const string & name, const Strings & def)
{
if (!settingsRead) readSettings();
std::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);
}
unsigned int queryIntSetting(const string & name, unsigned int def)
{
int n;
if (!string2Int(querySetting(name, int2String(def)), n) || n < 0)
throw Error(format("configuration setting `%1%' should have an integer value") % name);
return n;
}
void overrideSetting(const string & name, const Strings & value)
{
if (settingsRead) settings[name] = value;
settingsCmdline[name] = value;
}
void reloadSettings()
{
settingsRead = false;
settings.clear();
}
void setDefaultsFromEnvironment()
{
/* Setup Nix paths. */
nixStore = canonPath(getEnv("NIX_STORE_DIR", getEnv("NIX_STORE", NIX_STORE_DIR)));
nixDataDir = canonPath(getEnv("NIX_DATA_DIR", NIX_DATA_DIR));
nixLogDir = canonPath(getEnv("NIX_LOG_DIR", NIX_LOG_DIR));
nixStateDir = canonPath(getEnv("NIX_STATE_DIR", NIX_STATE_DIR));
nixDBPath = getEnv("NIX_DB_DIR", nixStateDir + "/db");
nixConfDir = canonPath(getEnv("NIX_CONF_DIR", NIX_CONF_DIR));
nixLibexecDir = canonPath(getEnv("NIX_LIBEXEC_DIR", NIX_LIBEXEC_DIR));
nixBinDir = canonPath(getEnv("NIX_BIN_DIR", NIX_BIN_DIR));
string subs = getEnv("NIX_SUBSTITUTERS", "default");
if (subs == "default") {
substituters.push_back(nixLibexecDir + "/nix/substituters/copy-from-other-stores.pl");
substituters.push_back(nixLibexecDir + "/nix/substituters/download-using-manifests.pl");
substituters.push_back(nixLibexecDir + "/nix/substituters/download-from-binary-cache.pl");
} else
substituters = tokenizeString(subs, ":");
/* Get some settings from the configuration file. */
thisSystem = querySetting("system", SYSTEM);
maxBuildJobs = queryIntSetting("build-max-jobs", 1);
buildCores = queryIntSetting("build-cores", 1);
maxSilentTime = queryIntSetting("build-max-silent-time", 0);
buildTimeout = queryIntSetting("build-timeout", 0);
}
}
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