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#include <map>
#include <iostream>
#include "globals.hh"
#include "build.hh"
#include "gc.hh"
#include "shared.hh"
#include "eval.hh"
#include "parser.hh"
#include "get-drvs.hh"
#include "attr-path.hh"
#include "expr-to-xml.hh"
#include "util.hh"
#include "store.hh"
#include "help.txt.hh"
using namespace nix;
void printHelp()
{
std::cout << string((char *) helpText, sizeof helpText);
}
static Expr parseStdin(EvalState & state)
{
startNest(nest, lvlTalkative, format("parsing standard input"));
string s, s2;
while (getline(std::cin, s2)) s += s2 + "\n";
return parseExprFromString(state, s, absPath("."));
}
static Path gcRoot;
static int rootNr = 0;
static bool indirectRoot = false;
static void printResult(EvalState & state, Expr e,
bool evalOnly, bool xmlOutput, const ATermMap & autoArgs)
{
PathSet context;
if (evalOnly)
if (xmlOutput)
printTermAsXML(e, std::cout, context);
else
std::cout << format("%1%\n") % e;
else {
DrvInfos drvs;
getDerivations(state, e, "", autoArgs, drvs);
for (DrvInfos::iterator i = drvs.begin(); i != drvs.end(); ++i) {
Path drvPath = i->queryDrvPath(state);
if (gcRoot == "")
printGCWarning();
else
drvPath = addPermRoot(drvPath,
makeRootName(gcRoot, rootNr),
indirectRoot);
std::cout << format("%1%\n") % drvPath;
}
}
}
Expr doEval(EvalState & state, string attrPath, bool parseOnly, bool strict,
const ATermMap & autoArgs, Expr e)
{
e = findAlongAttrPath(state, attrPath, autoArgs, e);
if (!parseOnly)
if (strict)
e = strictEvalExpr(state, e);
else
e = evalExpr(state, e);
return e;
}
void run(Strings args)
{
EvalState state;
Strings files;
bool readStdin = false;
bool evalOnly = false;
bool parseOnly = false;
bool xmlOutput = false;
bool strict = false;
string attrPath;
ATermMap autoArgs(128);
for (Strings::iterator i = args.begin();
i != args.end(); )
{
string arg = *i++;
if (arg == "-")
readStdin = true;
else if (arg == "--eval-only") {
readOnlyMode = true;
evalOnly = true;
}
else if (arg == "--parse-only") {
readOnlyMode = true;
parseOnly = evalOnly = true;
}
else if (arg == "--attr" || arg == "-A") {
if (i == args.end())
throw UsageError("`--attr' requires an argument");
attrPath = *i++;
}
else if (arg == "--arg") {
if (i == args.end())
throw UsageError("`--arg' requires two arguments");
string name = *i++;
if (i == args.end())
throw UsageError("`--arg' requires two arguments");
Expr value = parseExprFromString(state, *i++, absPath("."));
autoArgs.set(toATerm(name), value);
}
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")
xmlOutput = true;
else if (arg == "--strict")
strict = true;
else if (arg[0] == '-')
throw UsageError(format("unknown flag `%1%'") % arg);
else
files.push_back(arg);
}
openDB();
if (readStdin) {
Expr e = parseStdin(state);
e = doEval(state, attrPath, parseOnly, strict, autoArgs, e);
printResult(state, e, evalOnly, xmlOutput, autoArgs);
}
for (Strings::iterator i = files.begin();
i != files.end(); i++)
{
Path path = absPath(*i);
Expr e = parseExprFromFile(state, path);
e = doEval(state, attrPath, parseOnly, strict, autoArgs, e);
printResult(state, e, evalOnly, xmlOutput, autoArgs);
}
printEvalStats(state);
}
string programId = "nix-instantiate";
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