diff options
Diffstat (limited to 'src/nix-env/names.cc')
-rw-r--r-- | src/nix-env/names.cc | 124 |
1 files changed, 0 insertions, 124 deletions
diff --git a/src/nix-env/names.cc b/src/nix-env/names.cc deleted file mode 100644 index a425b8d0762c..000000000000 --- a/src/nix-env/names.cc +++ /dev/null @@ -1,124 +0,0 @@ -#include "names.hh" -#include "util.hh" - - -namespace nix { - - -DrvName::DrvName() -{ - name = ""; -} - - -/* 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::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 DrvName::matches(DrvName & n) -{ - if (name != "*" && name != n.name) return false; - if (version != "" && version != n.version) return false; - return true; -} - - -static 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; -} - - -static bool componentsLT(const string & c1, const string & c2) -{ - int n1, n2; - bool c1Num = string2Int(c1, n1), c2Num = string2Int(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; -} - - -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); -} - - -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; -} - - -} |