1 files changed, 91 insertions, 0 deletions
diff --git a/toolsrc/src/commands_update.cpp b/toolsrc/src/commands_update.cpp
new file mode 100644
index 000000000..eec3e46a7
--- /dev/null
+++ b/toolsrc/src/commands_update.cpp
@@ -0,0 +1,91 @@
+#include "vcpkg_Commands.h"
+#include "vcpkg.h"
+#include "vcpkg_System.h"
+#include "vcpkg_Files.h"
+
+namespace vcpkg
+{
+    void update_command(const vcpkg_cmd_arguments& /*args*/, const vcpkg_paths& paths)
+    {
+        auto status_db = database_load_check(paths);
+
+        std::unordered_map<std::string, std::string> src_names_to_versions;
+
+        auto begin_it = fs::directory_iterator(paths.ports);
+        auto end_it = fs::directory_iterator();
+        for (; begin_it != end_it; ++begin_it)
+        {
+            const auto& path = begin_it->path();
+            try
+            {
+                auto pghs = get_paragraphs(path / "CONTROL");
+                if (pghs.empty())
+                    continue;
+                auto srcpgh = SourceParagraph(pghs[0]);
+                src_names_to_versions.emplace(srcpgh.name, srcpgh.version);
+            }
+            catch (std::runtime_error const&)
+            {
+            }
+        }
+
+        std::string packages_list;
+
+        std::vector<std::string> packages_output;
+        for (auto&& pgh : database_load_check(paths))
+        {
+            if (pgh->state == install_state_t::not_installed && pgh->want == want_t::purge)
+                continue;
+            auto it = src_names_to_versions.find(pgh->package.name);
+            if (it == src_names_to_versions.end())
+            {
+                // Package was not installed from portfile
+                continue;
+            }
+            if (it->second != pgh->package.version)
+            {
+                packages_output.push_back(Strings::format("%-27s %s -> %s",
+                                                          pgh->package.displayname(),
+                                                          pgh->package.version,
+                                                          it->second));
+                packages_list.append(" " + pgh->package.displayname());
+            }
+        }
+        std::sort(packages_output.begin(), packages_output.end());
+        if (packages_output.empty())
+        {
+            System::println("No packages need updating.");
+        }
+        else
+        {
+            System::println("The following packages differ from their port versions:");
+            for (auto&& package : packages_output)
+            {
+                System::println("    %s", package.c_str());
+            }
+            System::println("\nTo update these packages, run\n    vcpkg remove --purge <pkgs>...\n    vcpkg install <pkgs>...");
+        }
+
+        auto version_file = Files::get_contents(paths.root / "toolsrc" / "VERSION.txt");
+        if (auto version_contents = version_file.get())
+        {
+            int maj1, min1, rev1;
+            auto num1 = sscanf_s(version_contents->c_str(), "\"%d.%d.%d\"", &maj1, &min1, &rev1);
+
+            int maj2, min2, rev2;
+            auto num2 = sscanf_s(version().c_str(), "%d.%d.%d-", &maj2, &min2, &rev2);
+
+            if (num1 == 3 && num2 == 3)
+            {
+                if (maj1 != maj2 || min1 != min2 || rev1 != rev2)
+                {
+                    System::println("Different source is available for vcpkg (%d.%d.%d -> %d.%d.%d). Use scripts\\bootstrap.ps1 to update.",
+                                    maj2, min2, rev2,
+                                    maj1, min1, rev1);
+                }
+            }
+        }
+
+        exit(EXIT_SUCCESS);
+    }
+}