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* `nix-instantiate ... --arg NAME VALUE': allow arguments to be passed

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to functions from the command line.
* nix-build: started removing backticks.
This commit is contained in:
Eelco Dolstra 2006-07-28 16:03:28 +00:00
parent c11839d7b2
commit 4661282fde
8 changed files with 58 additions and 32 deletions
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32
src/nix-instantiate/main.cc
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@ -34,7 +34,7 @@ static bool indirectRoot = false;
static void printResult(EvalState & state, Expr e,
bool evalOnly, bool printArgs)
bool evalOnly, bool printArgs, const ATermMap & autoArgs)
{
if (evalOnly)
cout << format("%1%\n") % e;
@ -62,7 +62,7 @@ static void printResult(EvalState & state, Expr e,
else {
DrvInfos drvs;
getDerivations(state, e, "", drvs);
getDerivations(state, e, "", autoArgs, drvs);
for (DrvInfos::iterator i = drvs.begin(); i != drvs.end(); ++i) {
Path drvPath = i->queryDrvPath(state);
if (gcRoot == "")
@ -86,6 +86,7 @@ void run(Strings args)
bool parseOnly = false;
bool printArgs = false;
string attrPath;
ATermMap autoArgs(128);
for (Strings::iterator i = args.begin();
i != args.end(); )
@ -106,20 +107,29 @@ void run(Strings args)
readOnlyMode = true;
printArgs = true;
}
else if (arg == "--add-root") {
if (i == args.end())
throw UsageError("`--add-root requires an argument");
gcRoot = absPath(*i++);
}
else if (arg == "--attr" || arg == "-A") {
if (i == args.end())
throw UsageError("`--attr requires an argument");
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[0] == '-')
throw UsageError(format("unknown flag `%1%`") % arg);
throw UsageError(format("unknown flag `%1%'") % arg);
else
files.push_back(arg);
}
@ -129,7 +139,7 @@ void run(Strings args)
if (readStdin) {
Expr e = findAlongAttrPath(state, attrPath, parseStdin(state));
if (!parseOnly) e = evalExpr(state, e);
printResult(state, e, evalOnly, printArgs);
printResult(state, e, evalOnly, printArgs, autoArgs);
}
for (Strings::iterator i = files.begin();
@ -139,7 +149,7 @@ void run(Strings args)
Expr e = findAlongAttrPath(state, attrPath,
parseExprFromFile(state, path));
if (!parseOnly) e = evalExpr(state, e);
printResult(state, e, evalOnly, printArgs);
printResult(state, e, evalOnly, printArgs, autoArgs);
}
printEvalStats(state);