wroclaw-git-backups/nix
1
0
Fork 0
mirror of https://github.com/NixOS/nix synced 2025-06-24 22:11:15 +02:00
Code Activity

nix-env: always print output names in JSON and XML

Browse source 
The current `--out-path` flag has two disadvantages when one is only
concerned with querying the names of outputs:
- it requires evaluating every output's `outPath`, which takes
  significantly more resources and runs into more failures
- it destroys the information of the order of outputs so we can't tell
  which one is the main output

This patch makes the output names always present (replacing paths with
`null` in JSON if `--out-path` isn't given), and adds an `outputName`
field.
This commit is contained in:
Naïm Favier 2022-03-12 13:47:01 +01:00
parent d5322698a2
commit 5736661922
No known key found for this signature in database
GPG key ID: 49B07322580B7EE2
4 changed files with 95 additions and 86 deletions
Download patch file Download diff file Expand all files Collapse all files

136
src/nix-env/nix-env.cc
View file

@ -918,12 +918,17 @@ static void queryJSON(Globals & globals, std::vector<DrvInfo> & elems, bool prin
pkgObj.attr("pname", drvName.name);
pkgObj.attr("version", drvName.version);
pkgObj.attr("system", i.querySystem());
pkgObj.attr("outputName", i.queryOutputName());
if (printOutPath) {
DrvInfo::Outputs outputs = i.queryOutputs();
{
DrvInfo::Outputs outputs = i.queryOutputs(printOutPath);
JSONObject outputObj = pkgObj.object("outputs");
for (auto & j : outputs)
outputObj.attr(j.first, globals.state->store->printStorePath(j.second));
for (auto & j : outputs) {
if (j.second)
outputObj.attr(j.first, globals.state->store->printStorePath(*j.second));
else
outputObj.attr(j.first, nullptr);
}
}
if (printMeta) {
@ -1154,13 +1159,16 @@ static void opQuery(Globals & globals, Strings opFlags, Strings opArgs)
columns.push_back(drvPath ? store.printStorePath(*drvPath) : "-");
}
if (xmlOutput)
attrs["outputName"] = i.queryOutputName();
if (printOutPath && !xmlOutput) {
DrvInfo::Outputs outputs = i.queryOutputs();
std::string s;
for (auto & j : outputs) {
if (!s.empty()) s += ';';
if (j.first != "out") { s += j.first; s += "="; }
s += store.printStorePath(j.second);
s += store.printStorePath(*j.second);
}
columns.push_back(s);
}
@ -1174,71 +1182,67 @@ static void opQuery(Globals & globals, Strings opFlags, Strings opArgs)
}
if (xmlOutput) {
if (printOutPath || printMeta) {
XMLOpenElement item(xml, "item", attrs);
if (printOutPath) {
DrvInfo::Outputs outputs = i.queryOutputs();
for (auto & j : outputs) {
XMLAttrs attrs2;
attrs2["name"] = j.first;
attrs2["path"] = store.printStorePath(j.second);
xml.writeEmptyElement("output", attrs2);
}
}
if (printMeta) {
StringSet metaNames = i.queryMetaNames();
for (auto & j : metaNames) {
XMLAttrs attrs2;
attrs2["name"] = j;
Value * v = i.queryMeta(j);
if (!v)
printError(
"derivation '%s' has invalid meta attribute '%s'",
i.queryName(), j);
else {
if (v->type() == nString) {
attrs2["type"] = "string";
attrs2["value"] = v->string.s;
xml.writeEmptyElement("meta", attrs2);
} else if (v->type() == nInt) {
attrs2["type"] = "int";
attrs2["value"] = (format("%1%") % v->integer).str();
xml.writeEmptyElement("meta", attrs2);
} else if (v->type() == nFloat) {
attrs2["type"] = "float";
attrs2["value"] = (format("%1%") % v->fpoint).str();
xml.writeEmptyElement("meta", attrs2);
} else if (v->type() == nBool) {
attrs2["type"] = "bool";
attrs2["value"] = v->boolean ? "true" : "false";
xml.writeEmptyElement("meta", attrs2);
} else if (v->type() == nList) {
attrs2["type"] = "strings";
XMLOpenElement m(xml, "meta", attrs2);
for (auto elem : v->listItems()) {
if (elem->type() != nString) continue;
XMLAttrs attrs3;
attrs3["value"] = elem->string.s;
xml.writeEmptyElement("string", attrs3);
}
} else if (v->type() == nAttrs) {
attrs2["type"] = "strings";
XMLOpenElement m(xml, "meta", attrs2);
Bindings & attrs = *v->attrs;
for (auto &i : attrs) {
Attr & a(*attrs.find(i.name));
if(a.value->type() != nString) continue;
XMLAttrs attrs3;
attrs3["type"] = i.name;
attrs3["value"] = a.value->string.s;
xml.writeEmptyElement("string", attrs3);
XMLOpenElement item(xml, "item", attrs);
DrvInfo::Outputs outputs = i.queryOutputs(printOutPath);
for (auto & j : outputs) {
XMLAttrs attrs2;
attrs2["name"] = j.first;
if (j.second)
attrs2["path"] = store.printStorePath(*j.second);
xml.writeEmptyElement("output", attrs2);
}
if (printMeta) {
StringSet metaNames = i.queryMetaNames();
for (auto & j : metaNames) {
XMLAttrs attrs2;
attrs2["name"] = j;
Value * v = i.queryMeta(j);
if (!v)
printError(
"derivation '%s' has invalid meta attribute '%s'",
i.queryName(), j);
else {
if (v->type() == nString) {
attrs2["type"] = "string";
attrs2["value"] = v->string.s;
xml.writeEmptyElement("meta", attrs2);
} else if (v->type() == nInt) {
attrs2["type"] = "int";
attrs2["value"] = (format("%1%") % v->integer).str();
xml.writeEmptyElement("meta", attrs2);
} else if (v->type() == nFloat) {
attrs2["type"] = "float";
attrs2["value"] = (format("%1%") % v->fpoint).str();
xml.writeEmptyElement("meta", attrs2);
} else if (v->type() == nBool) {
attrs2["type"] = "bool";
attrs2["value"] = v->boolean ? "true" : "false";
xml.writeEmptyElement("meta", attrs2);
} else if (v->type() == nList) {
attrs2["type"] = "strings";
XMLOpenElement m(xml, "meta", attrs2);
for (auto elem : v->listItems()) {
if (elem->type() != nString) continue;
XMLAttrs attrs3;
attrs3["value"] = elem->string.s;
xml.writeEmptyElement("string", attrs3);
}
}
} else if (v->type() == nAttrs) {
attrs2["type"] = "strings";
XMLOpenElement m(xml, "meta", attrs2);
Bindings & attrs = *v->attrs;
for (auto &i : attrs) {
Attr & a(*attrs.find(i.name));
if(a.value->type() != nString) continue;
XMLAttrs attrs3;
attrs3["type"] = i.name;
attrs3["value"] = a.value->string.s;
xml.writeEmptyElement("string", attrs3);
}
}
}
}
} else
xml.writeEmptyElement("item", attrs);
}
} else
table.push_back(columns);