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Refactor option handling

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This commit is contained in:
Eelco Dolstra 2014-08-13 03:50:44 +02:00
parent 5bed74d1b0
commit 47e185847e
10 changed files with 503 additions and 531 deletions
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76
src/download-via-ssh/download-via-ssh.cc
View file

@ -91,55 +91,49 @@ static void query(std::pair<FdSink, FdSource> & pipes)
}
void run(Strings args)
int main(int argc, char * * argv)
{
if (args.empty())
throw UsageError("download-via-ssh requires an argument");
return handleExceptions(argv[0], [&]() {
initNix();
if (settings.sshSubstituterHosts.empty())
return;
if (argc < 2)
throw UsageError("download-via-ssh requires an argument");
std::cout << std::endl;
if (settings.sshSubstituterHosts.empty())
return;
/* Pass on the location of the daemon client's SSH authentication
socket. */
string sshAuthSock = settings.get("ssh-auth-sock", "");
if (sshAuthSock != "") setenv("SSH_AUTH_SOCK", sshAuthSock.c_str(), 1);
std::cout << std::endl;
string host = settings.sshSubstituterHosts.front();
std::pair<FdSink, FdSource> pipes = connect(host);
/* Pass on the location of the daemon client's SSH
authentication socket. */
string sshAuthSock = settings.get("ssh-auth-sock", "");
if (sshAuthSock != "") setenv("SSH_AUTH_SOCK", sshAuthSock.c_str(), 1);
/* Exchange the greeting */
writeInt(SERVE_MAGIC_1, pipes.first);
pipes.first.flush();
unsigned int magic = readInt(pipes.second);
if (magic != SERVE_MAGIC_2)
throw Error("protocol mismatch");
readInt(pipes.second); // Server version, unused for now
writeInt(SERVE_PROTOCOL_VERSION, pipes.first);
pipes.first.flush();
string host = settings.sshSubstituterHosts.front();
std::pair<FdSink, FdSource> pipes = connect(host);
Strings::iterator i = args.begin();
if (*i == "--query")
query(pipes);
else if (*i == "--substitute")
if (args.size() != 3)
throw UsageError("download-via-ssh: --substitute takes exactly two arguments");
else {
Path storePath = *++i;
Path destPath = *++i;
/* Exchange the greeting */
writeInt(SERVE_MAGIC_1, pipes.first);
pipes.first.flush();
unsigned int magic = readInt(pipes.second);
if (magic != SERVE_MAGIC_2)
throw Error("protocol mismatch");
readInt(pipes.second); // Server version, unused for now
writeInt(SERVE_PROTOCOL_VERSION, pipes.first);
pipes.first.flush();
string arg = argv[1];
if (arg == "--query")
query(pipes);
else if (arg == "--substitute") {
if (argc != 4)
throw UsageError("download-via-ssh: --substitute takes exactly two arguments");
Path storePath = argv[2];
Path destPath = argv[3];
printMsg(lvlError, format("downloading `%1%' via SSH from `%2%'...") % storePath % host);
substitute(pipes, storePath, destPath);
}
else
throw UsageError(format("download-via-ssh: unknown command `%1%'") % *i);
else
throw UsageError(format("download-via-ssh: unknown command `%1%'") % arg);
});
}
void printHelp()
{
std::cerr << "Usage: download-via-ssh --query|--substitute store-path dest-path" << std::endl;
}
string programId = "download-via-ssh";

47
src/libexpr/common-opts.cc
View file

@ -6,40 +6,45 @@
namespace nix {
bool parseOptionArg(const string & arg, Strings::iterator & i,
const Strings::iterator & argsEnd, EvalState & state,
Bindings & autoArgs)
bool parseAutoArgs(Strings::iterator & i,
const Strings::iterator & argsEnd, std::map<string, string> & res)
{
string arg = *i;
if (arg != "--arg" && arg != "--argstr") return false;
UsageError error(format("`%1%' requires two arguments") % arg);
if (i == argsEnd) throw error;
string name = *i++;
if (i == argsEnd) throw error;
string value = *i++;
if (++i == argsEnd) throw error;
string name = *i;
if (++i == argsEnd) throw error;
string value = *i;
/* !!! check for duplicates! */
Value * v = state.allocValue();
autoArgs.push_back(Attr(state.symbols.create(name), v));
if (arg == "--arg")
state.mkThunk_(*v, state.parseExprFromString(value, absPath(".")));
else
mkString(*v, value);
autoArgs.sort(); // !!! inefficient
res[name] = (arg == "--arg" ? 'E' : 'S') + value;
return true;
}
bool parseSearchPathArg(const string & arg, Strings::iterator & i,
void evalAutoArgs(EvalState & state, std::map<string, string> & in, Bindings & out)
{
for (auto & i: in) {
Value * v = state.allocValue();
if (i.second[0] == 'E')
state.mkThunk_(*v, state.parseExprFromString(string(i.second, 1), absPath(".")));
else
mkString(*v, string(i.second, 1));
out.push_back(Attr(state.symbols.create(i.first), v));
}
out.sort();
}
bool parseSearchPathArg(Strings::iterator & i,
const Strings::iterator & argsEnd, Strings & searchPath)
{
if (arg != "-I") return false;
if (i == argsEnd) throw UsageError(format("`%1%' requires an argument") % arg);;
searchPath.push_back(*i++);
if (*i != "-I") return false;
if (++i == argsEnd) throw UsageError("`-I' requires an argument");
searchPath.push_back(*i);
return true;
}

9
src/libexpr/common-opts.hh
View file

@ -5,11 +5,12 @@
namespace nix {
/* Some common option parsing between nix-env and nix-instantiate. */
bool parseOptionArg(const string & arg, Strings::iterator & i,
const Strings::iterator & argsEnd, EvalState & state,
Bindings & autoArgs);
bool parseAutoArgs(Strings::iterator & i,
const Strings::iterator & argsEnd, std::map<string, string> & res);
bool parseSearchPathArg(const string & arg, Strings::iterator & i,
void evalAutoArgs(EvalState & state, std::map<string, string> & in, Bindings & out);
bool parseSearchPathArg(Strings::iterator & i,
const Strings::iterator & argsEnd, Strings & searchPath);
Path lookupFileArg(EvalState & state, string s);

82
src/libmain/shared.cc
View file

@ -100,10 +100,16 @@ string getArg(const string & opt,
void detectStackOverflow();
/* Initialize and reorder arguments, then call the actual argument
processor. */
static void initAndRun(int argc, char * * argv)
void initNix()
{
/* Turn on buffering for cerr. */
#if HAVE_PUBSETBUF
static char buf[1024];
std::cerr.rdbuf()->pubsetbuf(buf, sizeof(buf));
#endif
std::ios::sync_with_stdio(false);
settings.processEnvironment();
settings.loadConfFile();
@ -144,6 +150,14 @@ static void initAndRun(int argc, char * * argv)
gettimeofday(&tv, 0);
srandom(tv.tv_usec);
if (char *pack = getenv("_NIX_OPTIONS"))
settings.unpack(pack);
}
void parseCmdLine(int argc, char * * argv,
std::function<bool(Strings::iterator & arg, const Strings::iterator & end)> parseArg)
{
/* Put the arguments in a vector. */
Strings args, remaining;
while (argc--) args.push_back(*argv++);
@ -164,7 +178,6 @@ static void initAndRun(int argc, char * * argv)
} else remaining.push_back(arg);
}
args = remaining;
remaining.clear();
/* Process default options. */
for (Strings::iterator i = args.begin(); i != args.end(); ++i) {
@ -179,14 +192,6 @@ static void initAndRun(int argc, char * * argv)
settings.buildVerbosity = lvlVomit;
else if (arg == "--print-build-trace")
settings.printBuildTrace = true;
else if (arg == "--help") {
printHelp();
return;
}
else if (arg == "--version") {
std::cout << format("%1% (Nix) %2%") % programId % nixVersion << std::endl;
return;
}
else if (arg == "--keep-failed" || arg == "-K")
settings.keepFailed = true;
else if (arg == "--keep-going" || arg == "-k")
@ -216,25 +221,20 @@ static void initAndRun(int argc, char * * argv)
string value = *i;
settings.set(name, value);
}
else if (arg == "--arg" || arg == "--argstr") {
remaining.push_back(arg);
++i; if (i == args.end()) throw UsageError(format("`%1%' requires two arguments") % arg);
remaining.push_back(*i);
++i; if (i == args.end()) throw UsageError(format("`%1%' requires two arguments") % arg);
remaining.push_back(*i);
else {
if (!parseArg(i, args.end()))
throw UsageError(format("unrecognised option `%1%'") % *i);
}
else remaining.push_back(arg);
}
if (char *pack = getenv("_NIX_OPTIONS"))
settings.unpack(pack);
settings.update();
}
run(remaining);
/* Close the Nix database. */
store.reset((StoreAPI *) 0);
void printVersion(const string & programName)
{
std::cout << format("%1% (Nix) %2%") % programName % nixVersion << std::endl;
throw Exit();
}
@ -246,30 +246,11 @@ void showManPage(const string & name)
}
int exitCode = 0;
char * * argvSaved = 0;
}
static char buf[1024];
int main(int argc, char * * argv)
int handleExceptions(const string & programName, std::function<void()> fun)
{
using namespace nix;
argvSaved = argv;
/* Turn on buffering for cerr. */
#if HAVE_PUBSETBUF
std::cerr.rdbuf()->pubsetbuf(buf, sizeof(buf));
#endif
std::ios::sync_with_stdio(false);
try {
try {
initAndRun(argc, argv);
fun();
} catch (...) {
/* Subtle: we have to make sure that any `interrupted'
condition is discharged before we reach printMsg()
@ -279,12 +260,14 @@ int main(int argc, char * * argv)
_isInterrupted = 0;
throw;
}
} catch (Exit & e) {
return e.status;
} catch (UsageError & e) {
printMsg(lvlError,
format(
"error: %1%\n"
"Try `%2% --help' for more information.")
% e.what() % programId);
% e.what() % programName);
return 1;
} catch (BaseError & e) {
printMsg(lvlError, format("error: %1%%2%") % (settings.showTrace ? e.prefix() : "") % e.msg());
@ -299,5 +282,8 @@ int main(int argc, char * * argv)
return 1;
}
return exitCode;
return 0;
}
}

39
src/libmain/shared.hh
View file

@ -7,26 +7,29 @@
#include <locale>
/* These are not implemented here, but must be implemented by a
program linking against libmain. */
/* Main program. Called by main() after the ATerm library has been
initialised and some default arguments have been processed (and
removed from `args'). main() will catch all exceptions. */
void run(nix::Strings args);
/* Should print a help message to stdout and return. */
void printHelp();
extern std::string programId;
namespace nix {
MakeError(UsageError, nix::Error);
class Exit : public std::exception
{
public:
int status;
Exit() : status(0) { }
Exit(int status) : status(status) { }
};
class StoreAPI;
int handleExceptions(const string & programName, std::function<void()> fun);
void initNix();
void parseCmdLine(int argc, char * * argv,
std::function<bool(Strings::iterator & arg, const Strings::iterator & end)> parseArg);
void printVersion(const string & programName);
/* Ugh. No better place to put this. */
void printGCWarning();
@ -36,6 +39,9 @@ void printMissing(const PathSet & willBuild,
const PathSet & willSubstitute, const PathSet & unknown,
unsigned long long downloadSize, unsigned long long narSize);
string getArg(const string & opt,
Strings::iterator & i, const Strings::iterator & end);
template<class N> N getIntArg(const string & opt,
Strings::iterator & i, const Strings::iterator & end, bool allowUnit)
{
@ -65,9 +71,4 @@ void showManPage(const string & name);
extern volatile ::sig_atomic_t blockInt;
/* Exit code of the program. */
extern int exitCode;
extern char * * argvSaved;
}

33
src/nix-daemon/nix-daemon.cc
View file

@ -645,8 +645,10 @@ bool matchUser(const string & user, const string & group, const Strings & users)
#define SD_LISTEN_FDS_START 3
static void daemonLoop()
static void daemonLoop(char * * argv)
{
chdir("/");
/* Get rid of children automatically; don't let them become
zombies. */
setSigChldAction(true);
@ -766,9 +768,9 @@ static void daemonLoop()
setSigChldAction(false);
/* For debugging, stuff the pid into argv[1]. */
if (clientPid != -1 && argvSaved[1]) {
if (clientPid != -1 && argv[1]) {
string processName = int2String(clientPid);
strncpy(argvSaved[1], processName.c_str(), strlen(argvSaved[1]));
strncpy(argv[1], processName.c_str(), strlen(argv[1]));
}
/* Handle the connection. */
@ -792,18 +794,27 @@ void run(Strings args)
{
for (Strings::iterator i = args.begin(); i != args.end(); ) {
string arg = *i++;
if (arg == "--daemon") /* ignored for backwards compatibility */;
}
chdir("/");
daemonLoop();
}
void printHelp()
int main(int argc, char * * argv)
{
showManPage("nix-daemon");
return handleExceptions(argv[0], [&]() {
initNix();
parseCmdLine(argc, argv, [&](Strings::iterator & arg, const Strings::iterator & end) {
if (*arg == "--daemon")
; /* ignored for backwards compatibility */
else if (*arg == "--help")
showManPage("nix-daemon");
else if (*arg == "--version")
printVersion("nix-daemon");
else return false;
return true;
});
daemonLoop(argv);
});
}
string programId = "nix-daemon";

292
src/nix-env/nix-env.cc
View file

@ -52,24 +52,17 @@ struct Globals
{
InstallSourceInfo instSource;
Path profile;
EvalState state;
std::shared_ptr<EvalState> state;
bool dryRun;
bool preserveInstalled;
bool removeAll;
string forceName;
bool prebuiltOnly;
Globals(const Strings & searchPath) : state(searchPath) { }
};
typedef void (* Operation) (Globals & globals,
Strings args, Strings opFlags, Strings opArgs);
void printHelp()
{
showManPage("nix-env");
}
Strings opFlags, Strings opArgs);
static string needArg(Strings::iterator & i,
@ -467,11 +460,11 @@ static void installDerivations(Globals & globals,
/* Get the set of user environment elements to be installed. */
DrvInfos newElems, newElemsTmp;
queryInstSources(globals.state, globals.instSource, args, newElemsTmp, true);
queryInstSources(*globals.state, globals.instSource, args, newElemsTmp, true);
/* If --prebuilt-only is given, filter out source-only packages. */
foreach (DrvInfos::iterator, i, newElemsTmp)
if (!globals.prebuiltOnly || isPrebuilt(globals.state, *i))
if (!globals.prebuiltOnly || isPrebuilt(*globals.state, *i))
newElems.push_back(*i);
StringSet newNames;
@ -494,7 +487,7 @@ static void installDerivations(Globals & globals,
/* Add in the already installed derivations, unless they have
the same name as a to-be-installed element. */
if (!globals.removeAll) {
DrvInfos installedElems = queryInstalled(globals.state, profile);
DrvInfos installedElems = queryInstalled(*globals.state, profile);
foreach (DrvInfos::iterator, i, installedElems) {
DrvName drvName(i->name);
@ -510,18 +503,17 @@ static void installDerivations(Globals & globals,
printMsg(lvlInfo, format("installing `%1%'") % i->name);
}
printMissing(globals.state, newElems);
printMissing(*globals.state, newElems);
if (globals.dryRun) return;
if (createUserEnv(globals.state, allElems,
if (createUserEnv(*globals.state, allElems,
profile, settings.envKeepDerivations, lockToken)) break;
}
}
static void opInstall(Globals & globals,
Strings args, Strings opFlags, Strings opArgs)
static void opInstall(Globals & globals, Strings opFlags, Strings opArgs)
{
for (Strings::iterator i = opFlags.begin(); i != opFlags.end(); ) {
string arg = *i++;
@ -553,11 +545,11 @@ static void upgradeDerivations(Globals & globals,
while (true) {
string lockToken = optimisticLockProfile(globals.profile);
DrvInfos installedElems = queryInstalled(globals.state, globals.profile);
DrvInfos installedElems = queryInstalled(*globals.state, globals.profile);
/* Fetch all derivations from the input file. */
DrvInfos availElems;
queryInstSources(globals.state, globals.instSource, args, availElems, false);
queryInstSources(*globals.state, globals.instSource, args, availElems, false);
/* Go through all installed derivations. */
DrvInfos newElems;
@ -582,7 +574,7 @@ static void upgradeDerivations(Globals & globals,
foreach (DrvInfos::iterator, j, availElems) {
DrvName newName(j->name);
if (newName.name == drvName.name) {
int d = comparePriorities(globals.state, *i, *j);
int d = comparePriorities(*globals.state, *i, *j);
if (d == 0) d = compareVersions(drvName.version, newName.version);
if ((upgradeType == utLt && d < 0) ||
(upgradeType == utLeq && d <= 0) ||
@ -591,10 +583,10 @@ static void upgradeDerivations(Globals & globals,
{
int d2 = -1;
if (bestElem != availElems.end()) {
d2 = comparePriorities(globals.state, *bestElem, *j);
d2 = comparePriorities(*globals.state, *bestElem, *j);
if (d2 == 0) d2 = compareVersions(bestName.version, newName.version);
}
if (d2 < 0 && (!globals.prebuiltOnly || isPrebuilt(globals.state, *j))) {
if (d2 < 0 && (!globals.prebuiltOnly || isPrebuilt(*globals.state, *j))) {
bestElem = j;
bestName = newName;
}
@ -618,18 +610,17 @@ static void upgradeDerivations(Globals & globals,
}
}
printMissing(globals.state, newElems);
printMissing(*globals.state, newElems);
if (globals.dryRun) return;
if (createUserEnv(globals.state, newElems,
if (createUserEnv(*globals.state, newElems,
globals.profile, settings.envKeepDerivations, lockToken)) break;
}
}
static void opUpgrade(Globals & globals,
Strings args, Strings opFlags, Strings opArgs)
static void opUpgrade(Globals & globals, Strings opFlags, Strings opArgs)
{
UpgradeType upgradeType = utLt;
for (Strings::iterator i = opFlags.begin(); i != opFlags.end(); ) {
@ -655,8 +646,7 @@ static void setMetaFlag(EvalState & state, DrvInfo & drv,
}
static void opSetFlag(Globals & globals,
Strings args, Strings opFlags, Strings opArgs)
static void opSetFlag(Globals & globals, Strings opFlags, Strings opArgs)
{
if (opFlags.size() > 0)
throw UsageError(format("unknown flag `%1%'") % opFlags.front());
@ -671,7 +661,7 @@ static void opSetFlag(Globals & globals,
while (true) {
string lockToken = optimisticLockProfile(globals.profile);
DrvInfos installedElems = queryInstalled(globals.state, globals.profile);
DrvInfos installedElems = queryInstalled(*globals.state, globals.profile);
/* Update all matching derivations. */
foreach (DrvInfos::iterator, i, installedElems) {
@ -680,7 +670,7 @@ static void opSetFlag(Globals & globals,
if (j->matches(drvName)) {
printMsg(lvlInfo, format("setting flag on `%1%'") % i->name);
j->hits++;
setMetaFlag(globals.state, *i, flagName, flagValue);
setMetaFlag(*globals.state, *i, flagName, flagValue);
break;
}
}
@ -688,14 +678,13 @@ static void opSetFlag(Globals & globals,
checkSelectorUse(selectors);
/* Write the new user environment. */
if (createUserEnv(globals.state, installedElems,
if (createUserEnv(*globals.state, installedElems,
globals.profile, settings.envKeepDerivations, lockToken)) break;
}
}
static void opSet(Globals & globals,
Strings args, Strings opFlags, Strings opArgs)
static void opSet(Globals & globals, Strings opFlags, Strings opArgs)
{
for (Strings::iterator i = opFlags.begin(); i != opFlags.end(); ) {
string arg = *i++;
@ -704,7 +693,7 @@ static void opSet(Globals & globals,
}
DrvInfos elems;
queryInstSources(globals.state, globals.instSource, opArgs, elems, true);
queryInstSources(*globals.state, globals.instSource, opArgs, elems, true);
if (elems.size() != 1)
throw Error("--set requires exactly one derivation");
@ -715,7 +704,7 @@ static void opSet(Globals & globals,
PathSet paths = singleton<PathSet>(drv.queryDrvPath());
printMissing(*store, paths);
if (globals.dryRun) return;
store->buildPaths(paths, globals.state.repair ? bmRepair : bmNormal);
store->buildPaths(paths, globals.state->repair ? bmRepair : bmNormal);
}
else {
printMissing(*store, singleton<PathSet>(drv.queryOutPath()));
@ -735,7 +724,7 @@ static void uninstallDerivations(Globals & globals, Strings & selectors,
while (true) {
string lockToken = optimisticLockProfile(profile);
DrvInfos installedElems = queryInstalled(globals.state, profile);
DrvInfos installedElems = queryInstalled(*globals.state, profile);
DrvInfos newElems;
foreach (DrvInfos::iterator, i, installedElems) {
@ -756,14 +745,13 @@ static void uninstallDerivations(Globals & globals, Strings & selectors,
if (globals.dryRun) return;
if (createUserEnv(globals.state, newElems,
if (createUserEnv(*globals.state, newElems,
profile, settings.envKeepDerivations, lockToken)) break;
}
}
static void opUninstall(Globals & globals,
Strings args, Strings opFlags, Strings opArgs)
static void opUninstall(Globals & globals, Strings opFlags, Strings opArgs)
{
if (opFlags.size() > 0)
throw UsageError(format("unknown flag `%1%'") % opFlags.front());
@ -887,15 +875,14 @@ static void queryJSON(Globals & globals, vector<DrvInfo> & elems)
cout << "null";
} else {
PathSet context;
printValueAsJSON(globals.state, true, *v, cout, context);
printValueAsJSON(*globals.state, true, *v, cout, context);
}
}
}
}
static void opQuery(Globals & globals,
Strings args, Strings opFlags, Strings opArgs)
static void opQuery(Globals & globals, Strings opFlags, Strings opArgs)
{
Strings remaining;
string attrPath;
@ -916,7 +903,7 @@ static void opQuery(Globals & globals,
settings.readOnlyMode = true; /* makes evaluation a bit faster */
for (Strings::iterator i = args.begin(); i != args.end(); ) {
for (Strings::iterator i = opFlags.begin(); i != opFlags.end(); ) {
string arg = *i++;
if (arg == "--status" || arg == "-s") printStatus = true;
else if (arg == "--no-name") printName = false;
@ -932,10 +919,9 @@ static void opQuery(Globals & globals,
else if (arg == "--json") jsonOutput = true;
else if (arg == "--attr-path" || arg == "-P") printAttrPath = true;
else if (arg == "--attr" || arg == "-A")
attrPath = needArg(i, args, arg);
else if (arg[0] == '-')
attrPath = needArg(i, opFlags, arg);
else
throw UsageError(format("unknown flag `%1%'") % arg);
else remaining.push_back(arg);
}
@ -943,16 +929,16 @@ static void opQuery(Globals & globals,
DrvInfos availElems, installedElems;
if (source == sInstalled || compareVersions || printStatus)
installedElems = queryInstalled(globals.state, globals.profile);
installedElems = queryInstalled(*globals.state, globals.profile);
if (source == sAvailable || compareVersions)
loadDerivations(globals.state, globals.instSource.nixExprPath,
loadDerivations(*globals.state, globals.instSource.nixExprPath,
globals.instSource.systemFilter, globals.instSource.autoArgs,
attrPath, availElems);
DrvInfos elems_ = filterBySelector(globals.state,
DrvInfos elems_ = filterBySelector(*globals.state,
source == sInstalled ? installedElems : availElems,
remaining, false);
opArgs, false);
DrvInfos & otherElems(source == sInstalled ? availElems : installedElems);
@ -1173,8 +1159,7 @@ static void opQuery(Globals & globals,
}
static void opSwitchProfile(Globals & globals,
Strings args, Strings opFlags, Strings opArgs)
static void opSwitchProfile(Globals & globals, Strings opFlags, Strings opArgs)
{
if (opFlags.size() > 0)
throw UsageError(format("unknown flag `%1%'") % opFlags.front());
@ -1222,8 +1207,7 @@ static void switchGeneration(Globals & globals, int dstGen)
}
static void opSwitchGeneration(Globals & globals,
Strings args, Strings opFlags, Strings opArgs)
static void opSwitchGeneration(Globals & globals, Strings opFlags, Strings opArgs)
{
if (opFlags.size() > 0)
throw UsageError(format("unknown flag `%1%'") % opFlags.front());
@ -1238,8 +1222,7 @@ static void opSwitchGeneration(Globals & globals,
}
static void opRollback(Globals & globals,
Strings args, Strings opFlags, Strings opArgs)
static void opRollback(Globals & globals, Strings opFlags, Strings opArgs)
{
if (opFlags.size() > 0)
throw UsageError(format("unknown flag `%1%'") % opFlags.front());
@ -1250,8 +1233,7 @@ static void opRollback(Globals & globals,
}
static void opListGenerations(Globals & globals,
Strings args, Strings opFlags, Strings opArgs)
static void opListGenerations(Globals & globals, Strings opFlags, Strings opArgs)
{
if (opFlags.size() > 0)
throw UsageError(format("unknown flag `%1%'") % opFlags.front());
@ -1288,8 +1270,7 @@ static void deleteGeneration2(Globals & globals, unsigned int gen)
}
static void opDeleteGenerations(Globals & globals,
Strings args, Strings opFlags, Strings opArgs)
static void opDeleteGenerations(Globals & globals, Strings opFlags, Strings opArgs)
{
if (opFlags.size() > 0)
throw UsageError(format("unknown flag `%1%'") % opFlags.front());
@ -1348,110 +1329,115 @@ static void opDeleteGenerations(Globals & globals,
}
void run(Strings args)
int main(int argc, char * * argv)
{
Strings opFlags, opArgs, remaining;
Operation op = 0;
return handleExceptions(argv[0], [&]() {
initNix();
/* FIXME: hack. */
Strings searchPath;
Strings args2;
for (Strings::iterator i = args.begin(); i != args.end(); ) {
string arg = *i++;
if (!parseSearchPathArg(arg, i, args.end(), searchPath))
args2.push_back(arg);
}
args = args2;
Strings opFlags, opArgs, searchPath;
std::map<string, string> autoArgs_;
Operation op = 0;
bool repair = false;
string file;
Globals globals(searchPath);
Globals globals;
globals.instSource.type = srcUnknown;
globals.instSource.nixExprPath = getDefNixExprPath();
globals.instSource.systemFilter = "*";
globals.instSource.type = srcUnknown;
globals.instSource.nixExprPath = getDefNixExprPath();
globals.instSource.systemFilter = "*";
globals.dryRun = false;
globals.preserveInstalled = false;
globals.removeAll = false;
globals.prebuiltOnly = false;
globals.dryRun = false;
globals.preserveInstalled = false;
globals.removeAll = false;
globals.prebuiltOnly = false;
for (Strings::iterator i = args.begin(); i != args.end(); ) {
string arg = *i++;
parseCmdLine(argc, argv, [&](Strings::iterator & arg, const Strings::iterator & end) {
Operation oldOp = op;
Operation oldOp = op;
if (*arg == "--help")
showManPage("nix-env");
else if (*arg == "--version")
printVersion("nix-env");
else if (*arg == "--install" || *arg == "-i")
op = opInstall;
else if (parseAutoArgs(arg, end, autoArgs_))
;
else if (parseSearchPathArg(arg, end, searchPath))
;
else if (*arg == "--force-name") // undocumented flag for nix-install-package
globals.forceName = getArg(*arg, arg, end);
else if (*arg == "--uninstall" || *arg == "-e")
op = opUninstall;
else if (*arg == "--upgrade" || *arg == "-u")
op = opUpgrade;
else if (*arg == "--set-flag")
op = opSetFlag;
else if (*arg == "--set")
op = opSet;
else if (*arg == "--query" || *arg == "-q")
op = opQuery;
else if (*arg == "--profile" || *arg == "-p")
globals.profile = absPath(getArg(*arg, arg, end));
else if (*arg == "--file" || *arg == "-f")
file = getArg(*arg, arg, end);
else if (*arg == "--switch-profile" || *arg == "-S")
op = opSwitchProfile;
else if (*arg == "--switch-generation" || *arg == "-G")
op = opSwitchGeneration;
else if (*arg == "--rollback")
op = opRollback;
else if (*arg == "--list-generations")
op = opListGenerations;
else if (*arg == "--delete-generations")
op = opDeleteGenerations;
else if (*arg == "--dry-run") {
printMsg(lvlInfo, "(dry run; not doing anything)");
globals.dryRun = true;
}
else if (*arg == "--system-filter")
globals.instSource.systemFilter = getArg(*arg, arg, end);
else if (*arg == "--prebuilt-only" || *arg == "-b")
globals.prebuiltOnly = true;
else if (*arg == "--repair")
repair = true;
else if (*arg != "" && arg->at(0) == '-') {
opFlags.push_back(*arg);
if (*arg == "--from-profile" || *arg == "--atr" || *arg == "-A") /* !!! hack */
opFlags.push_back(getArg(*arg, arg, end));
}
else
opArgs.push_back(*arg);
if (arg == "--install" || arg == "-i")
op = opInstall;
else if (parseOptionArg(arg, i, args.end(),
globals.state, globals.instSource.autoArgs))
;
else if (arg == "--force-name") // undocumented flag for nix-install-package
globals.forceName = needArg(i, args, arg);
else if (arg == "--uninstall" || arg == "-e")
op = opUninstall;
else if (arg == "--upgrade" || arg == "-u")
op = opUpgrade;
else if (arg == "--set-flag")
op = opSetFlag;
else if (arg == "--set")
op = opSet;
else if (arg == "--query" || arg == "-q")
op = opQuery;
else if (arg == "--profile" || arg == "-p")
globals.profile = absPath(needArg(i, args, arg));
else if (arg == "--file" || arg == "-f")
globals.instSource.nixExprPath = lookupFileArg(globals.state, needArg(i, args, arg));
else if (arg == "--switch-profile" || arg == "-S")
op = opSwitchProfile;
else if (arg == "--switch-generation" || arg == "-G")
op = opSwitchGeneration;
else if (arg == "--rollback")
op = opRollback;
else if (arg == "--list-generations")
op = opListGenerations;
else if (arg == "--delete-generations")
op = opDeleteGenerations;
else if (arg == "--dry-run") {
printMsg(lvlInfo, "(dry run; not doing anything)");
globals.dryRun = true;
}
else if (arg == "--system-filter")
globals.instSource.systemFilter = needArg(i, args, arg);
else if (arg == "--prebuilt-only" || arg == "-b")
globals.prebuiltOnly = true;
else if (arg == "--repair")
globals.state.repair = true;
else {
remaining.push_back(arg);
if (arg[0] == '-') {
opFlags.push_back(arg);
if (arg == "--from-profile") { /* !!! hack */
if (i != args.end()) opFlags.push_back(*i++);
}
} else opArgs.push_back(arg);
if (oldOp && oldOp != op)
throw UsageError("only one operation may be specified");
return true;
});
if (!op) throw UsageError("no operation specified");
globals.state = std::shared_ptr<EvalState>(new EvalState(searchPath));
globals.state->repair = repair;
if (file != "")
globals.instSource.nixExprPath = lookupFileArg(*globals.state, file);
evalAutoArgs(*globals.state, autoArgs_, globals.instSource.autoArgs);
if (globals.profile == "")
globals.profile = getEnv("NIX_PROFILE", "");
if (globals.profile == "") {
Path profileLink = getHomeDir() + "/.nix-profile";
globals.profile = pathExists(profileLink)
? absPath(readLink(profileLink), dirOf(profileLink))
: canonPath(settings.nixStateDir + "/profiles/default");
}
if (oldOp && oldOp != op)
throw UsageError("only one operation may be specified");
}
store = openStore();
if (!op) throw UsageError("no operation specified");
op(globals, opFlags, opArgs);
if (globals.profile == "")
globals.profile = getEnv("NIX_PROFILE", "");
if (globals.profile == "") {
Path profileLink = getHomeDir() + "/.nix-profile";
globals.profile = pathExists(profileLink)
? absPath(readLink(profileLink), dirOf(profileLink))
: canonPath(settings.nixStateDir + "/profiles/default");
}
store = openStore();
op(globals, remaining, opFlags, opArgs);
globals.state.printStats();
globals.state->printStats();
});
}
string programId = "nix-env";

83
src/nix-hash/nix-hash.cc
View file

@ -3,17 +3,10 @@
#include <iostream>
using namespace nix;
void printHelp()
{
showManPage("nix-hash");
}
void run(Strings args)
int main(int argc, char * * argv)
{
HashType ht = htMD5;
bool flat = false;
@ -23,42 +16,48 @@ void run(Strings args)
Strings ss;
for (Strings::iterator i = args.begin();
i != args.end(); i++)
{
if (*i == "--flat") flat = true;
else if (*i == "--base32") base32 = true;
else if (*i == "--truncate") truncate = true;
else if (*i == "--type") {
++i;
if (i == args.end()) throw UsageError("`--type' requires an argument");
ht = parseHashType(*i);
if (ht == htUnknown)
throw UsageError(format("unknown hash type `%1%'") % *i);
}
else if (*i == "--to-base16") op = opTo16;
else if (*i == "--to-base32") op = opTo32;
else ss.push_back(*i);
}
return handleExceptions(argv[0], [&]() {
initNix();
if (op == opHash) {
foreach (Strings::iterator, i, ss) {
Hash h = flat ? hashFile(ht, *i) : hashPath(ht, *i).first;
if (truncate && h.hashSize > 20) h = compressHash(h, 20);
std::cout << format("%1%\n") %
(base32 ? printHash32(h) : printHash(h));
}
}
parseCmdLine(argc, argv, [&](Strings::iterator & arg, const Strings::iterator & end) {
if (*arg == "--help")
showManPage("nix-hash");
else if (*arg == "--version")
printVersion("nix-hash");
else if (*arg == "--flat") flat = true;
else if (*arg == "--base32") base32 = true;
else if (*arg == "--truncate") truncate = true;
else if (*arg == "--type") {
string s = getArg(*arg, arg, end);
ht = parseHashType(s);
if (ht == htUnknown)
throw UsageError(format("unknown hash type `%1%'") % s);
}
else if (*arg == "--to-base16") op = opTo16;
else if (*arg == "--to-base32") op = opTo32;
else if (*arg != "" && arg->at(0) == '-')
return false;
else
ss.push_back(*arg);
return true;
});
else {
foreach (Strings::iterator, i, ss) {
Hash h = parseHash16or32(ht, *i);
std::cout << format("%1%\n") %
(op == opTo16 ? printHash(h) : printHash32(h));
if (op == opHash) {
for (auto & i : ss) {
Hash h = flat ? hashFile(ht, i) : hashPath(ht, i).first;
if (truncate && h.hashSize > 20) h = compressHash(h, 20);
std::cout << format("%1%\n") %
(base32 ? printHash32(h) : printHash(h));
}
}
}
else {
for (auto & i : ss) {
Hash h = parseHash16or32(ht, i);
std::cout << format("%1%\n") %
(op == opTo16 ? printHash(h) : printHash32(h));
}
}
});
}
string programId = "nix-hash";

194
src/nix-instantiate/nix-instantiate.cc
View file

@ -18,12 +18,6 @@
using namespace nix;
void printHelp()
{
showManPage("nix-instantiate");
}
static Expr * parseStdin(EvalState & state)
{
startNest(nest, lvlTalkative, format("parsing standard input"));
@ -95,112 +89,108 @@ void processExpr(EvalState & state, const Strings & attrPaths,
}
void run(Strings args)
int main(int argc, char * * argv)
{
/* FIXME: hack. */
Strings searchPath;
Strings args2;
for (Strings::iterator i = args.begin(); i != args.end(); ) {
string arg = *i++;
if (!parseSearchPathArg(arg, i, args.end(), searchPath))
args2.push_back(arg);
}
args = args2;
return handleExceptions(argv[0], [&]() {
initNix();
EvalState state(searchPath);
Strings files;
bool readStdin = false;
bool fromArgs = false;
bool findFile = false;
bool evalOnly = false;
bool parseOnly = false;
OutputKind outputKind = okPlain;
bool xmlOutputSourceLocation = true;
bool strict = false;
Strings attrPaths;
Bindings autoArgs;
bool wantsReadWrite = false;
Strings files, searchPath;
bool readStdin = false;
bool fromArgs = false;
bool findFile = false;
bool evalOnly = false;
bool parseOnly = false;
OutputKind outputKind = okPlain;
bool xmlOutputSourceLocation = true;
bool strict = false;
Strings attrPaths;
bool wantsReadWrite = false;
std::map<string, string> autoArgs_;
bool repair = false;
for (Strings::iterator i = args.begin(); i != args.end(); ) {
string arg = *i++;
parseCmdLine(argc, argv, [&](Strings::iterator & arg, const Strings::iterator & end) {
if (*arg == "--help")
showManPage("nix-instantiate");
else if (*arg == "--version")
printVersion("nix-instantiate");
else if (*arg == "-")
readStdin = true;
else if (*arg == "--expr" || *arg == "-E")
fromArgs = true;
else if (*arg == "--eval" || *arg == "--eval-only")
evalOnly = true;
else if (*arg == "--read-write-mode")
wantsReadWrite = true;
else if (*arg == "--parse" || *arg == "--parse-only")
parseOnly = evalOnly = true;
else if (*arg == "--find-file")
findFile = true;
else if (*arg == "--attr" || *arg == "-A")
attrPaths.push_back(getArg(*arg, arg, end));
else if (parseAutoArgs(arg, end, autoArgs_))
;
else if (parseSearchPathArg(arg, end, searchPath))
;
else if (*arg == "--add-root")
gcRoot = getArg(*arg, arg, end);
else if (*arg == "--indirect")
indirectRoot = true;
else if (*arg == "--xml")
outputKind = okXML;
else if (*arg == "--json")
outputKind = okJSON;
else if (*arg == "--no-location")
xmlOutputSourceLocation = false;
else if (*arg == "--strict")
strict = true;
else if (*arg == "--repair")
repair = true;
else if (*arg == "--dry-run")
settings.readOnlyMode = true;
else if (*arg != "" && arg->at(0) == '-')
return false;
else
files.push_back(*arg);
return true;
});
if (arg == "-")
readStdin = true;
else if (arg == "--expr" || arg == "-E")
fromArgs = true;
else if (arg == "--eval" || arg == "--eval-only")
evalOnly = true;
else if (arg == "--read-write-mode")
wantsReadWrite = true;
else if (arg == "--parse" || arg == "--parse-only")
parseOnly = evalOnly = true;
else if (arg == "--find-file")
findFile = true;
else if (arg == "--attr" || arg == "-A") {
if (i == args.end())
throw UsageError("`--attr' requires an argument");
attrPaths.push_back(*i++);
}
else if (parseOptionArg(arg, i, args.end(), state, autoArgs))
;
else if (arg == "--add-root") {
if (i == args.end())
throw UsageError("`--add-root' requires an argument");
gcRoot = absPath(*i++);
}
else if (arg == "--indirect")
indirectRoot = true;
else if (arg == "--xml")
outputKind = okXML;
else if (arg == "--json")
outputKind = okJSON;
else if (arg == "--no-location")
xmlOutputSourceLocation = false;
else if (arg == "--strict")
strict = true;
else if (arg == "--repair")
state.repair = true;
else if (arg == "--dry-run")
EvalState state(searchPath);
state.repair = repair;
Bindings autoArgs;
evalAutoArgs(state, autoArgs_, autoArgs);
if (evalOnly && !wantsReadWrite)
settings.readOnlyMode = true;
else if (arg[0] == '-')
throw UsageError(format("unknown flag `%1%'") % arg);
else
files.push_back(arg);
}
if (evalOnly && !wantsReadWrite)
settings.readOnlyMode = true;
if (attrPaths.empty()) attrPaths.push_back("");
if (attrPaths.empty()) attrPaths.push_back("");
if (findFile) {
foreach (Strings::iterator, i, files) {
Path p = state.findFile(*i);
if (p == "") throw Error(format("unable to find `%1%'") % *i);
std::cout << p << std::endl;
if (findFile) {
foreach (Strings::iterator, i, files) {
Path p = state.findFile(*i);
if (p == "") throw Error(format("unable to find `%1%'") % *i);
std::cout << p << std::endl;
}
return;
}
return;
}
store = openStore();
store = openStore();
if (readStdin) {
Expr * e = parseStdin(state);
processExpr(state, attrPaths, parseOnly, strict, autoArgs,
evalOnly, outputKind, xmlOutputSourceLocation, e);
} else if (files.empty() && !fromArgs)
files.push_back("./default.nix");
if (readStdin) {
Expr * e = parseStdin(state);
processExpr(state, attrPaths, parseOnly, strict, autoArgs,
evalOnly, outputKind, xmlOutputSourceLocation, e);
} else if (files.empty() && !fromArgs)
files.push_back("./default.nix");
foreach (Strings::iterator, i, files) {
Expr * e = fromArgs
? state.parseExprFromString(*i, absPath("."))
: state.parseExprFromFile(resolveExprPath(lookupFileArg(state, *i)));
processExpr(state, attrPaths, parseOnly, strict, autoArgs,
evalOnly, outputKind, xmlOutputSourceLocation, e);
}
foreach (Strings::iterator, i, files) {
Expr * e = fromArgs
? state.parseExprFromString(*i, absPath("."))
: state.parseExprFromFile(resolveExprPath(lookupFileArg(state, *i)));
processExpr(state, attrPaths, parseOnly, strict, autoArgs,
evalOnly, outputKind, xmlOutputSourceLocation, e);
}
state.printStats();
state.printStats();
});
}
string programId = "nix-instantiate";

179
src/nix-store/nix-store.cc
View file

@ -29,12 +29,6 @@ using std::cout;
typedef void (* Operation) (Strings opFlags, Strings opArgs);
void printHelp()
{
showManPage("nix-store");
}
static Path gcRoot;
static int rootNr = 0;
static bool indirectRoot = false;
@ -782,7 +776,7 @@ static void opVerify(Strings opFlags, Strings opArgs)
if (ensureLocalStore().verifyStore(checkContents, repair)) {
printMsg(lvlError, "warning: not all errors were fixed");
exitCode = 1;
throw Exit(1);
}
}
@ -793,6 +787,8 @@ static void opVerifyPath(Strings opFlags, Strings opArgs)
if (!opFlags.empty())
throw UsageError("no flags expected");
int status = 0;
foreach (Strings::iterator, i, opArgs) {
Path path = followLinksToStorePath(*i);
printMsg(lvlTalkative, format("checking path `%1%'...") % path);
@ -802,9 +798,11 @@ static void opVerifyPath(Strings opFlags, Strings opArgs)
printMsg(lvlError,
format("path `%1%' was modified! expected hash `%2%', got `%3%'")
% path % printHash(info.hash) % printHash(current.first));
exitCode = 1;
status = 1;
}
}
throw Exit(status);
}
@ -1017,95 +1015,96 @@ static void opServe(Strings opFlags, Strings opArgs)
/* Scan the arguments; find the operation, set global flags, put all
other flags in a list, and put all other arguments in another
list. */
void run(Strings args)
int main(int argc, char * * argv)
{
Strings opFlags, opArgs;
Operation op = 0;
return handleExceptions(argv[0], [&]() {
initNix();
for (Strings::iterator i = args.begin(); i != args.end(); ) {
string arg = *i++;
Strings opFlags, opArgs;
Operation op = 0;
Operation oldOp = op;
parseCmdLine(argc, argv, [&](Strings::iterator & arg, const Strings::iterator & end) {
Operation oldOp = op;
if (arg == "--realise" || arg == "--realize" || arg == "-r")
op = opRealise;
else if (arg == "--add" || arg == "-A")
op = opAdd;
else if (arg == "--add-fixed")
op = opAddFixed;
else if (arg == "--print-fixed-path")
op = opPrintFixedPath;
else if (arg == "--delete")
op = opDelete;
else if (arg == "--query" || arg == "-q")
op = opQuery;
else if (arg == "--print-env")
op = opPrintEnv;
else if (arg == "--read-log" || arg == "-l")
op = opReadLog;
else if (arg == "--dump-db")
op = opDumpDB;
else if (arg == "--load-db")
op = opLoadDB;
else if (arg == "--register-validity")
op = opRegisterValidity;
else if (arg == "--check-validity")
op = opCheckValidity;
else if (arg == "--gc")
op = opGC;
else if (arg == "--dump")
op = opDump;
else if (arg == "--restore")
op = opRestore;
else if (arg == "--export")
op = opExport;
else if (arg == "--import")
op = opImport;
else if (arg == "--init")
op = opInit;
else if (arg == "--verify")
op = opVerify;
else if (arg == "--verify-path")
op = opVerifyPath;
else if (arg == "--repair-path")
op = opRepairPath;
else if (arg == "--optimise" || arg == "--optimize")
op = opOptimise;
else if (arg == "--query-failed-paths")
op = opQueryFailedPaths;
else if (arg == "--clear-failed-paths")
op = opClearFailedPaths;
else if (arg == "--add-root") {
if (i == args.end())
throw UsageError("`--add-root requires an argument");
gcRoot = absPath(*i++);
}
else if (arg == "--indirect")
indirectRoot = true;
else if (arg == "--no-output")
noOutput = true;
else if (arg == "--serve")
op = opServe;
else if (arg[0] == '-') {
opFlags.push_back(arg);
if (arg == "--max-freed" || arg == "--max-links" || arg == "--max-atime") { /* !!! hack */
if (i != args.end()) opFlags.push_back(*i++);
if (*arg == "--help")
showManPage("nix-store");
else if (*arg == "--version")
printVersion("nix-store");
else if (*arg == "--realise" || *arg == "--realize" || *arg == "-r")
op = opRealise;
else if (*arg == "--add" || *arg == "-A")
op = opAdd;
else if (*arg == "--add-fixed")
op = opAddFixed;
else if (*arg == "--print-fixed-path")
op = opPrintFixedPath;
else if (*arg == "--delete")
op = opDelete;
else if (*arg == "--query" || *arg == "-q")
op = opQuery;
else if (*arg == "--print-env")
op = opPrintEnv;
else if (*arg == "--read-log" || *arg == "-l")
op = opReadLog;
else if (*arg == "--dump-db")
op = opDumpDB;
else if (*arg == "--load-db")
op = opLoadDB;
else if (*arg == "--register-validity")
op = opRegisterValidity;
else if (*arg == "--check-validity")
op = opCheckValidity;
else if (*arg == "--gc")
op = opGC;
else if (*arg == "--dump")
op = opDump;
else if (*arg == "--restore")
op = opRestore;
else if (*arg == "--export")
op = opExport;
else if (*arg == "--import")
op = opImport;
else if (*arg == "--init")
op = opInit;
else if (*arg == "--verify")
op = opVerify;
else if (*arg == "--verify-path")
op = opVerifyPath;
else if (*arg == "--repair-path")
op = opRepairPath;
else if (*arg == "--optimise" || *arg == "--optimize")
op = opOptimise;
else if (*arg == "--query-failed-paths")
op = opQueryFailedPaths;
else if (*arg == "--clear-failed-paths")
op = opClearFailedPaths;
else if (*arg == "--add-root")
gcRoot = absPath(getArg(*arg, arg, end));
else if (*arg == "--indirect")
indirectRoot = true;
else if (*arg == "--no-output")
noOutput = true;
else if (*arg == "--serve")
op = opServe;
else if (*arg != "" && arg->at(0) == '-') {
opFlags.push_back(*arg);
if (*arg == "--max-freed" || *arg == "--max-links" || *arg == "--max-atime") /* !!! hack */
opFlags.push_back(getArg(*arg, arg, end));
}
}
else
opArgs.push_back(arg);
else
opArgs.push_back(*arg);
if (oldOp && oldOp != op)
throw UsageError("only one operation may be specified");
}
if (oldOp && oldOp != op)
throw UsageError("only one operation may be specified");
if (!op) throw UsageError("no operation specified");
return true;
});
if (op != opDump && op != opRestore) /* !!! hack */
store = openStore(op != opGC);
if (!op) throw UsageError("no operation specified");
op(opFlags, opArgs);
if (op != opDump && op != opRestore) /* !!! hack */
store = openStore(op != opGC);
op(opFlags, opArgs);
});
}
string programId = "nix-store";