na-get-lib/NaGet.Packages.Install/UpgradeFinder.cs

   1 using System;
   2 using System.Collections.Generic;
   3 using System.Reflection;
   4 using NaGet.Packages;
   5
   6 namespace NaGet.Packages.Install
   7 {
   8         /// <summary>
   9         /// \8dX\90V\83\\83t\83g\82ð\92T\82·
  10         /// </summary>
  11         public sealed class UpgradeFinder
  12         {
  13                 private UpgradeFinder()
  14                 {
  15                 }
  16
  17                 private static Package getUpgradePkg(Package pkg, PackageList<Package> pkgList, PackageList<InstalledPackage> instPkgList, string[] exclude, IComparer<string> verComp)
  18                 {
  19                         Package avaiablePkg = pkgList.GetPackageForName(pkg.Name);
  20                         bool canUpgrade = false;
  21
  22                         if (avaiablePkg != null) {
  23
  24                                 if (verComp.Compare(pkg.Version, avaiablePkg.Version) < 0 &&
  25                                     instPkgList.GetPackageForPackage(pkg.Name, avaiablePkg.Version) == null) {
  26                                         canUpgrade = true;
  27
  28                                         if (Array.IndexOf(exclude, pkg.Name) >= 0) {
  29                                                 canUpgrade = false;
  30                                         }
  31                                 }
  32                         }
  33
  34                         return (canUpgrade)? avaiablePkg : null;
  35                 }
  36
  37                 public static IEnumerable<Package> GetUpgradePackages(PackageListsManager pkgListMan)
  38                 {
  39                         PackageList<Package> packageList = pkgListMan.AvailablePkgList;
  40                         string[] exclude = NaGet.Env.ExcludeUpdatePackageNames ?? new string[0];
  41
  42                         VersionComparetor verComp = new VersionComparetor();
  43
  44                         foreach (InstalledPackage pkg in pkgListMan.InstalledPkgList) {
  45                                 Package availablePkg = getUpgradePkg(pkg, packageList, pkgListMan.InstalledPkgList, exclude, verComp);
  46                                 if (availablePkg != null) { // if it has an upgrade, yield
  47                                         yield return availablePkg;
  48                                 }
  49                         }
  50                         foreach (InstalledPackage pkg in pkgListMan.SystemInstalledPkgList) {
  51                                 Package availablePkg = getUpgradePkg(pkg, packageList, pkgListMan.SystemInstalledPkgList, exclude, verComp);
  52                                 if (availablePkg != null) { // if it has an upgrade, yield
  53                                         yield return availablePkg;
  54                                 }
  55                         }
  56                 }
  57         }
  58 }