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* Allow the system attribute of derivations to be queried in

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`nix-env -q'.
* Queries can now be combined, e.g., `nix-env -q --status --system'.
This commit is contained in:
Eelco Dolstra 2004-07-01 13:13:37 +00:00
parent b584253af4
commit 593bc23d8b
1 changed files with 51 additions and 38 deletions
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71
src/nix-env/main.cc
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@ -28,6 +28,7 @@ typedef void (* Operation) (Globals & globals,
struct DrvInfo
{
string name;
string system;
Path drvPath;
Path outPath;
Hash drvHash;
@ -56,6 +57,12 @@ bool parseDerivation(EvalState & state, Expr e, DrvInfo & drv)
if (!a) throw badTerm("derivation name missing", e);
drv.name = evalString(state, a);
a = queryAttr(e, "system");
if (!a)
drv.system = "unknown";
else
drv.system = evalString(state, a);
a = queryAttr(e, "drvPath");
if (!a) throw badTerm("derivation path missing", e);
drv.drvPath = evalPath(state, a);
@ -181,11 +188,13 @@ void createUserEnv(EvalState & state, const DrvInfos & drvs,
"Attrs(["
"Bind(\"type\", Str(\"derivation\"), NoPos), "
"Bind(\"name\", Str(<str>), NoPos), "
"Bind(\"system\", Str(<str>), NoPos), "
"Bind(\"drvPath\", Path(<str>), NoPos), "
"Bind(\"drvHash\", Str(<str>), NoPos), "
"Bind(\"outPath\", Path(<str>), NoPos)"
"])",
i->second.name.c_str(),
i->second.system.c_str(),
i->second.drvPath.c_str(),
((string) i->second.drvHash).c_str(),
i->second.outPath.c_str());
@ -454,14 +463,19 @@ static bool cmpDrvByName(const DrvInfo & a, const DrvInfo & b)
static void opQuery(Globals & globals,
Strings opFlags, Strings opArgs)
{
enum { qName, qDrvPath, qStatus } query = qName;
bool printStatus = false;
bool printName = true;
bool printSystem = false;
bool printDrvPath = false;
enum { sInstalled, sAvailable } source = sInstalled;
for (Strings::iterator i = opFlags.begin();
i != opFlags.end(); ++i)
if (*i == "--name") query = qName;
else if (*i == "--expr") query = qDrvPath;
else if (*i == "--status" || *i == "-s") query = qStatus;
if (*i == "--status" || *i == "-s") printStatus = true;
else if (*i == "--no-name") printName = false;
else if (*i == "--system") printSystem = true;
else if (*i == "--expr") printDrvPath = true;
else if (*i == "--installed") source = sInstalled;
else if (*i == "--available" || *i == "-a") source = sAvailable;
else throw UsageError(format("unknown flag `%1%'") % *i);
@ -491,43 +505,42 @@ static void opQuery(Globals & globals,
drvs2.push_back(i->second);
sort(drvs2.begin(), drvs2.end(), cmpDrvByName);
/* Perform the specified query on the derivations. */
switch (query) {
/* We only need to know the installed paths when we are querying
the status of the derivation. */
PathSet installedPaths; /* output paths of installed drvs */
case qName: {
for (DrvInfoList::iterator i = drvs2.begin(); i != drvs2.end(); ++i)
cout << format("%1%\n") % i->name;
break;
}
case qDrvPath: {
for (DrvInfoList::iterator i = drvs2.begin(); i != drvs2.end(); ++i)
cout << format("%1%\n") % i->drvPath;
break;
}
case qStatus: {
if (printStatus) {
DrvInfos installed;
queryInstalled(globals.state, installed, globals.profile);
PathSet installedPaths; /* output paths of installed drvs */
for (DrvInfos::iterator i = installed.begin();
i != installed.end(); ++i)
installedPaths.insert(i->second.outPath);
}
/* Print the desired columns. */
for (DrvInfoList::iterator i = drvs2.begin(); i != drvs2.end(); ++i) {
Strings columns;
if (printStatus) {
Substitutes subs = querySubstitutes(i->drvPath);
cout << format("%1%%2%%3% %4%\n")
% (installedPaths.find(i->outPath)
!= installedPaths.end() ? 'I' : '-')
% (isValidPath(i->outPath) ? 'P' : '-')
% (subs.size() > 0 ? 'S' : '-')
% i->name;
}
break;
columns.push_back(
(string) (installedPaths.find(i->outPath)
!= installedPaths.end() ? "I" : "-")
+ (isValidPath(i->outPath) ? "P" : "-")
+ (subs.size() > 0 ? "S" : "-"));
}
default: abort();
if (printName) columns.push_back(i->name);
if (printSystem) columns.push_back(i->system);
if (printDrvPath) columns.push_back(i->drvPath);
for (Strings::iterator j = columns.begin(); j != columns.end(); ++j)
cout << *j << " ";
cout << endl;
}
}