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* A command `--list-generations' to show all generations for a

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profile.
This commit is contained in:
Eelco Dolstra 2004-02-06 16:03:27 +00:00
parent 7c0fa4474f
commit 73ab2ed4fd
3 changed files with 80 additions and 9 deletions
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34
src/nix-env/main.cc
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@ -1,5 +1,3 @@
#include <cerrno>
#include "profiles.hh"
#include "names.hh"
#include "globals.hh"
@ -9,6 +7,9 @@
#include "eval.hh"
#include "help.txt.hh"
#include <cerrno>
#include <ctime>
struct Globals
{
@ -460,9 +461,9 @@ static void opSwitchProfile(Globals & globals,
Strings opFlags, Strings opArgs)
{
if (opFlags.size() > 0)
throw UsageError(format("unknown flags `%1%'") % opFlags.front());
throw UsageError(format("unknown flag `%1%'") % opFlags.front());
if (opArgs.size() != 1)
throw UsageError(format("`--profile' takes exactly one argument"));
throw UsageError(format("exactly one argument expected"));
Path profile = opArgs.front();
Path profileLink = getHomeDir() + "/.nix-profile";
@ -471,13 +472,34 @@ static void opSwitchProfile(Globals & globals,
}
static void opListGenerations(Globals & globals,
Strings opFlags, Strings opArgs)
{
if (opFlags.size() > 0)
throw UsageError(format("unknown flag `%1%'") % opFlags.front());
if (opArgs.size() != 0)
throw UsageError(format("no arguments expected"));
Generations gens = findGenerations(globals.profile);
for (Generations::iterator i = gens.begin(); i != gens.end(); ++i) {
tm t;
if (!localtime_r(&i->creationTime, &t)) throw Error("cannot convert time");
cout << format("%|4| %|4|-%|02|-%|02| %|02|:%|02|:%|02|\n")
% i->number
% (t.tm_year + 1900) % (t.tm_mon + 1) % t.tm_mday
% t.tm_hour % t.tm_min % t.tm_sec;
}
}
static void opDefaultExpr(Globals & globals,
Strings opFlags, Strings opArgs)
{
if (opFlags.size() > 0)
throw UsageError(format("unknown flags `%1%'") % opFlags.front());
if (opArgs.size() != 1)
throw UsageError(format("`--import' takes exactly one argument"));
throw UsageError(format("exactly one argument expected"));
Path defNixExpr = absPath(opArgs.front());
Path defNixExprLink = getDefNixExprPath();
@ -526,6 +548,8 @@ void run(Strings args)
}
else if (arg == "--switch-profile" || arg == "-S")
op = opSwitchProfile;
else if (arg == "--list-generations")
op = opListGenerations;
else if (arg[0] == '-')
opFlags.push_back(arg);
else