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nix-env: Add regular expression support in selectors

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So you can now do things like:

  $ nix-env -qa '.*zip.*'
  $ nix-env -qa '.*(firefox|chromium).*'
This commit is contained in:
Eelco Dolstra 2014-10-03 18:47:16 +02:00
parent 3800f441e4
commit 104e55bb7f
5 changed files with 165 additions and 23 deletions
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6
src/libexpr/names.cc
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@ -1,5 +1,6 @@
#include "names.hh"
#include "util.hh"
#include "regex.hh"
namespace nix {
@ -32,7 +33,10 @@ DrvName::DrvName(const string & s) : hits(0)
bool DrvName::matches(DrvName & n)
{
if (name != "*" && name != n.name) return false;
if (name != "*") {
Regex regex(name);
if (!regex.matches(n.name)) return false;
}
if (version != "" && version != n.version) return false;
return true;
}