From dcc433de47d4bf4a27fe63bc8996e946164ae885 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <e.dolstra@tudelft.nl>
Date: Fri, 10 Sep 2004 13:32:08 +0000
Subject: * Operation `--delete-generations' to delete generations of a  
 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.
---
 src/libutil/util.cc | 8 ++++++++
 src/libutil/util.hh | 4 ++++
 2 files changed, 12 insertions(+)

(limited to 'src/libutil')

diff --git a/src/libutil/util.cc b/src/libutil/util.cc
index a25665e4a88c..5a41c098654e 100644
--- a/src/libutil/util.cc
+++ b/src/libutil/util.cc
@@ -616,3 +616,11 @@ bool statusOk(int status)
 {
     return WIFEXITED(status) && WEXITSTATUS(status) == 0;
 }
+
+
+bool string2Int(const string & s, int & n)
+{
+    istringstream str(s);
+    str >> n;
+    return str && str.eof();
+}
diff --git a/src/libutil/util.hh b/src/libutil/util.hh
index ae5b4882e62d..a79c07305df8 100644
--- a/src/libutil/util.hh
+++ b/src/libutil/util.hh
@@ -246,6 +246,10 @@ string statusToString(int status);
 bool statusOk(int status);
 
 
+/* Parse a string into an integer. */
+bool string2Int(const string & s, int & n);
+
+
 /* !!! HACK HACK HACK - this should be in shared.hh, but it's to
    facilitate a quick hack - will remove this eventually (famous last
    words). */
-- 
cgit 1.4.1