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Add "nix search" command

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This commit is contained in:
Eelco Dolstra 2017-07-17 19:02:56 +02:00
parent 3162ad5ff4
commit 90825dea51
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GPG key ID: 8170B4726D7198DE
9 changed files with 263 additions and 102 deletions
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44
src/libexpr/get-drvs.cc
View file

@ -9,7 +9,34 @@
namespace nix {
string DrvInfo::queryDrvPath()
DrvInfo::DrvInfo(EvalState & state, const string & attrPath, Bindings * attrs)
: state(&state), attrs(attrs), attrPath(attrPath)
{
}
string DrvInfo::queryName() const
{
if (name == "" && attrs) {
auto i = attrs->find(state->sName);
if (i == attrs->end()) throw TypeError("derivation name missing");
name = state->forceStringNoCtx(*i->value);
}
return name;
}
string DrvInfo::querySystem() const
{
if (system == "" && attrs) {
auto i = attrs->find(state->sSystem);
system = i == attrs->end() ? "unknown" : state->forceStringNoCtx(*i->value, *i->pos);
}
return system;
}
string DrvInfo::queryDrvPath() const
{
if (drvPath == "" && attrs) {
Bindings::iterator i = attrs->find(state->sDrvPath);
@ -20,7 +47,7 @@ string DrvInfo::queryDrvPath()
}
string DrvInfo::queryOutPath()
string DrvInfo::queryOutPath() const
{
if (outPath == "" && attrs) {
Bindings::iterator i = attrs->find(state->sOutPath);
@ -76,7 +103,7 @@ DrvInfo::Outputs DrvInfo::queryOutputs(bool onlyOutputsToInstall)
}
string DrvInfo::queryOutputName()
string DrvInfo::queryOutputName() const
{
if (outputName == "" && attrs) {
Bindings::iterator i = attrs->find(state->sOutputName);
@ -225,17 +252,12 @@ static bool getDerivation(EvalState & state, Value & v,
if (done.find(v.attrs) != done.end()) return false;
done.insert(v.attrs);
Bindings::iterator i = v.attrs->find(state.sName);
/* !!! We really would like to have a decent back trace here. */
if (i == v.attrs->end()) throw TypeError("derivation name missing");
DrvInfo drv(state, attrPath, v.attrs);
Bindings::iterator i2 = v.attrs->find(state.sSystem);
DrvInfo drv(state, state.forceStringNoCtx(*i->value), attrPath,
i2 == v.attrs->end() ? "unknown" : state.forceStringNoCtx(*i2->value, *i2->pos),
v.attrs);
drv.queryName();
drvs.push_back(drv);
return false;
} catch (AssertionError & e) {

39
src/libexpr/get-drvs.hh
View file

@ -17,31 +17,32 @@ public:
private:
EvalState * state;
string drvPath;
string outPath;
string outputName;
mutable string name;
mutable string system;
mutable string drvPath;
mutable string outPath;
mutable string outputName;
Outputs outputs;
bool failed; // set if we get an AssertionError
bool failed = false; // set if we get an AssertionError
Bindings * attrs, * meta;
Bindings * attrs = nullptr, * meta = nullptr;
Bindings * getMeta();
bool checkMeta(Value & v);
public:
string name;
string attrPath; /* path towards the derivation */
string system;
DrvInfo(EvalState & state) : state(&state), failed(false), attrs(0), meta(0) { };
DrvInfo(EvalState & state, const string & name, const string & attrPath, const string & system, Bindings * attrs)
: state(&state), failed(false), attrs(attrs), meta(0), name(name), attrPath(attrPath), system(system) { };
DrvInfo(EvalState & state) : state(&state) { };
DrvInfo(EvalState & state, const string & attrPath, Bindings * attrs);
string queryDrvPath();
string queryOutPath();
string queryOutputName();
string queryName() const;
string querySystem() const;
string queryDrvPath() const;
string queryOutPath() const;
string queryOutputName() const;
/** Return the list of outputs. The "outputs to install" are determined by `mesa.outputsToInstall`. */
Outputs queryOutputs(bool onlyOutputsToInstall = false);
@ -58,15 +59,9 @@ public:
MetaValue queryMetaInfo(EvalState & state, const string & name) const;
*/
void setDrvPath(const string & s)
{
drvPath = s;
}
void setOutPath(const string & s)
{
outPath = s;
}
void setName(const string & s) { name = s; }
void setDrvPath(const string & s) { drvPath = s; }
void setOutPath(const string & s) { outPath = s; }
void setFailed() { failed = true; };
bool hasFailed() { return failed; };