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nix edit / log: Operate on a single Installable

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This commit is contained in:
Eelco Dolstra 2017-08-29 16:18:00 +02:00
parent 9b82ecbae0
commit e9c07a3b26
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GPG key ID: 8170B4726D7198DE
6 changed files with 109 additions and 98 deletions
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72
src/nix/edit.cc
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@ -8,7 +8,7 @@
using namespace nix;
struct CmdEdit : InstallablesCommand
struct CmdEdit : InstallableCommand
{
std::string name() override
{
@ -34,44 +34,42 @@ struct CmdEdit : InstallablesCommand
{
auto state = getEvalState();
for (auto & i : installables) {
auto v = i->toValue(*state);
auto v = installable->toValue(*state);
Value * v2;
try {
auto dummyArgs = state->allocBindings(0);
v2 = findAlongAttrPath(*state, "meta.position", *dummyArgs, *v);
} catch (Error &) {
throw Error("package '%s' has no source location information", i->what());
}
auto pos = state->forceString(*v2);
debug("position is %s", pos);
auto colon = pos.rfind(':');
if (colon == std::string::npos)
throw Error("cannot parse meta.position attribute '%s'", pos);
std::string filename(pos, 0, colon);
int lineno = std::stoi(std::string(pos, colon + 1));
auto editor = getEnv("EDITOR", "cat");
Strings args{editor};
if (editor.find("emacs") != std::string::npos ||
editor.find("nano") != std::string::npos ||
editor.find("vim") != std::string::npos)
args.push_back(fmt("+%d", lineno));
args.push_back(filename);
stopProgressBar();
execvp(editor.c_str(), stringsToCharPtrs(args).data());
throw SysError("cannot run editor '%s'", editor);
Value * v2;
try {
auto dummyArgs = state->allocBindings(0);
v2 = findAlongAttrPath(*state, "meta.position", *dummyArgs, *v);
} catch (Error &) {
throw Error("package '%s' has no source location information", installable->what());
}
auto pos = state->forceString(*v2);
debug("position is %s", pos);
auto colon = pos.rfind(':');
if (colon == std::string::npos)
throw Error("cannot parse meta.position attribute '%s'", pos);
std::string filename(pos, 0, colon);
int lineno = std::stoi(std::string(pos, colon + 1));
auto editor = getEnv("EDITOR", "cat");
Strings args{editor};
if (editor.find("emacs") != std::string::npos ||
editor.find("nano") != std::string::npos ||
editor.find("vim") != std::string::npos)
args.push_back(fmt("+%d", lineno));
args.push_back(filename);
stopProgressBar();
execvp(editor.c_str(), stringsToCharPtrs(args).data());
throw SysError("cannot run editor '%s'", editor);
}
};