1 files changed, 1 insertions, 130 deletions
diff --git a/src/nix-env/main.cc b/src/nix-env/main.cc
index 00b6c7f8d3a9..051236681829 100644
--- a/src/nix-env/main.cc
+++ b/src/nix-env/main.cc
@@ -1,5 +1,6 @@
 #include <cerrno>
 
+#include "names.hh"
 #include "globals.hh"
 #include "normalise.hh"
 #include "shared.hh"
@@ -253,136 +254,6 @@ void createUserEnv(EvalState & state, const DrvInfos & drvs,
 }
 
 
-struct DrvName
-{
-    string fullName;
-    string name;
-    string version;
-    unsigned int hits;
-
-    /* Parse a derivation name.  The `name' part of a derivation name
-       is everything up to but not including the first dash *not*
-       followed by a letter.  The `version' part is the rest
-       (excluding the separating dash).  E.g., `apache-httpd-2.0.48'
-       is parsed to (`apache-httpd', '2.0.48'). */
-    DrvName(const string & s) : hits(0)
-    {
-        name = fullName = s;
-        for (unsigned int i = 0; i < s.size(); ++i) {
-            /* !!! isalpha/isdigit are affected by the locale. */
-            if (s[i] == '-' && i + 1 < s.size() && !isalpha(s[i + 1])) {
-                name = string(s, 0, i);
-                version = string(s, i + 1);
-                break;
-            }
-        }
-    }
-
-    bool matches(DrvName & n)
-    {
-        if (name != "*" && name != n.name) return false;
-        if (version != "" && version != n.version) return false;
-        return true;
-    }
-};
-
-
-string nextComponent(string::const_iterator & p,
-    const string::const_iterator end)
-{
-    /* Skip any dots and dashes (component separators). */
-    while (p != end && (*p == '.' || *p == '-')) ++p;
-
-    if (p == end) return "";
-
-    /* If the first character is a digit, consume the longest sequence
-       of digits.  Otherwise, consume the longest sequence of
-       non-digit, non-separator characters. */
-    string s;
-    if (isdigit(*p))
-        while (p != end && isdigit(*p)) s += *p++;
-    else
-        while (p != end && (!isdigit(*p) && *p != '.' && *p != '-'))
-            s += *p++;
-    
-    return s;
-}
-
-
-#include <fstream>
-
-bool parseInt(const string & s, int & n)
-{
-    istringstream st(s);
-    st >> n;
-    return !st.fail();
-}
-
-
-static bool componentsLT(const string & c1, const string & c2)
-{
-    int n1, n2;
-    bool c1Num = parseInt(c1, n1), c2Num = parseInt(c2, n2);
-
-    if (c1Num && c2Num) return n1 < n2;
-    else if (c1 == "" && c2Num) return true;
-    else if (c1 == "pre" && c2 != "pre") return true;
-    else if (c2 == "pre") return false;
-    /* Assume that `2.3a' < `2.3.1'. */
-    else if (c2Num) return true;
-    else if (c1Num) return false;
-    else return c1 < c2;
-}
-
-
-static int compareVersions(const string & v1, const string & v2)
-{
-    string::const_iterator p1 = v1.begin();
-    string::const_iterator p2 = v2.begin();
-    
-    while (p1 != v1.end() || p2 != v2.end()) {
-        string c1 = nextComponent(p1, v1.end());
-        string c2 = nextComponent(p2, v2.end());
-        if (componentsLT(c1, c2)) return -1;
-        else if (componentsLT(c2, c1)) return 1;
-    }
-
-    return 0;
-}
-
-
-static void testCompareVersions()
-{
-#define TEST(v1, v2, n) assert( \
-    compareVersions(v1, v2) == n && compareVersions(v2, v1) == -n)
-    TEST("1.0", "2.3", -1);
-    TEST("2.1", "2.3", -1);
-    TEST("2.3", "2.3", 0);
-    TEST("2.5", "2.3", 1);
-    TEST("3.1", "2.3", 1);
-    TEST("2.3.1", "2.3", 1);
-    TEST("2.3.1", "2.3a", 1);
-    TEST("2.3pre1", "2.3", -1);
-    TEST("2.3pre3", "2.3pre12", -1);
-    TEST("2.3a", "2.3c", -1);
-    TEST("2.3pre1", "2.3c", -1);
-    TEST("2.3pre1", "2.3q", -1);
-}
-
-
-typedef list<DrvName> DrvNames;
-
-
-static DrvNames drvNamesFromArgs(const Strings & opArgs)
-{
-    DrvNames result;
-    for (Strings::const_iterator i = opArgs.begin();
-         i != opArgs.end(); ++i)
-        result.push_back(DrvName(*i));
-    return result;
-}
-
-
 static void installDerivations(EvalState & state,
     Path nePath, DrvNames & selectors, const Path & profile)
 {