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* Operation `--delete-generations' to delete generations of a

Browse source 
profile.  Arguments are either generation number, or `old' to delete
  all non-current generations.  Typical use:

  $ nix-env --delete-generations old
  $ nix-collect-garbage

* istringstream -> string2Int.
This commit is contained in:
Eelco Dolstra 2004-09-10 13:32:08 +00:00
parent c16be6ac92
commit dcc433de47
8 changed files with 100 additions and 33 deletions
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14
src/nix-store/main.cc
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@ -1,5 +1,4 @@
#include <iostream>
#include <sstream>
#include "globals.hh"
#include "normalise.hh"
@ -171,10 +170,8 @@ static void opSubstitute(Strings opFlags, Strings opArgs)
getline(cin, sub.program);
string s;
getline(cin, s);
istringstream st(s);
int n;
st >> n;
if (!st) throw Error("number expected");
if (!string2Int(s, n)) throw Error("number expected");
while (n--) {
getline(cin, s);
sub.args.push_back(s);
@ -224,11 +221,10 @@ static void opGC(Strings opFlags, Strings opArgs)
else if (*i == "--print-dead") subOp = soPrintDead;
else if (*i == "--delete") subOp = soDelete;
else if (*i == "--min-age") {
if (opArgs.size() == 0)
throw UsageError("`--min-age' requires an argument");
istringstream st(opArgs.front());
st >> minAge;
if (!st) throw Error("number expected");
int n;
if (opArgs.size() == 0 || !string2Int(opArgs.front(), n))
throw UsageError("`--min-age' requires an integer argument");
minAge = n;
}
else throw UsageError(format("bad sub-operation `%1%' in GC") % *i);