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* Cleanup: use the code shared with nix-env.

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This commit is contained in:
Eelco Dolstra 2006-02-10 15:14:57 +00:00
parent 4eb637c799
commit f848a45739
1 changed files with 15 additions and 64 deletions
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79
src/nix-instantiate/main.cc
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@ -8,6 +8,7 @@
#include "eval.hh"
#include "parser.hh"
#include "nixexpr-ast.hh"
#include "get-drvs.hh"
#include "help.txt.hh"
@ -32,74 +33,24 @@ static int rootNr = 0;
static bool indirectRoot = false;
/* Print out the paths of the resulting derivation(s). If the user
specified the `--add-root' flag, we register the derivation as a
garbage collection root and print out the path of the GC root
symlink instead. */
static void printDrvPaths(EvalState & state, Expr e)
{
ATermList es;
/* !!! duplication w.r.t. parseDerivations in nix-env */
if (matchAttrs(e, es)) {
Expr a = queryAttr(e, "type");
if (a && evalString(state, a) == "derivation") {
a = queryAttr(e, "drvPath");
if (a) {
Path drvPath = evalPath(state, a);
if (gcRoot == "")
printGCWarning();
else
drvPath = addPermRoot(drvPath,
makeRootName(gcRoot, rootNr),
indirectRoot);
cout << format("%1%\n") % drvPath;
return;
}
throw Error("bad derivation");
} else {
ATermMap drvMap;
queryAllAttrs(e, drvMap);
for (ATermIterator i(drvMap.keys()); i; ++i)
printDrvPaths(state, evalExpr(state, drvMap.get(*i)));
return;
}
}
if (matchList(e, es)) {
for (ATermIterator i(es); i; ++i)
printDrvPaths(state, evalExpr(state, *i));
return;
}
ATermList formals;
ATerm body, pos;
if (matchFunction(e, formals, body, pos)) {
for (ATermIterator i(formals); i; ++i) {
Expr name, def;
if (matchNoDefFormal(*i, name))
throw Error(format("expression evaluates to a function with no-default arguments (`%1%')")
% aterm2String(name));
else if (!matchDefFormal(*i, name, def))
abort(); /* can't happen */
}
printDrvPaths(state, evalExpr(state,
makeCall(e, makeAttrs(ATermMap()))));
return;
}
throw Error("expression does not evaluate to one or more derivations");
}
static void printResult(EvalState & state, Expr e, bool evalOnly)
{
if (evalOnly)
cout << format("%1%\n") % e;
else
printDrvPaths(state, e);
else {
DrvInfos drvs;
getDerivations(state, e, 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);
cout << format("%1%\n") % drvPath;
}
}
}