Add hash file support.

2 files changed, 43 insertions, 1 deletions

diff --git a/toolsrc/src/commands_hash.cpp b/toolsrc/src/commands_hash.cpp
new file mode 100644
index 000000000..672e24a24
--- /dev/null
+++ b/toolsrc/src/commands_hash.cpp
@@ -0,0 +1,40 @@
+#include "vcpkg_Commands.h"
+#include "vcpkg_System.h"
+#include "vcpkg.h"
+#include <iostream>
+#include <iomanip>
+#include <Windows.h>
+
+namespace fs = std::tr2::sys;
+
+namespace vcpkg
+{
+	void file_hash_sha512(fs::path const & path, char const * hash)
+	{
+		auto cmd_line = Strings::format("Powershell -Command (Get-FileHash %s -Algorithm %s).Hash.ToLower()", 
+			Strings::utf16_to_utf8(path.c_str()), 
+			hash);
+		auto ec_data = System::cmd_execute_and_capture_output(Strings::utf8_to_utf16(cmd_line));
+		Checks::check_exit(ec_data.exit_code == 0, "Running command:\n   %s\n failed", cmd_line);
+		System::print(ec_data.output.c_str());
+	}
+
+	void hash_command(const vcpkg_cmd_arguments& args)
+	{
+		static const std::string example = Strings::format(
+			"The argument should be a file path\n%s", create_example_string("hash boost_1_62_0.tar.bz2"));
+		args.check_min_arg_count(1, example.c_str());
+		args.check_max_arg_count(2, example.c_str());
+
+		if (args.command_arguments.size() == 1)
+		{
+			file_hash_sha512(args.command_arguments[0], "SHA512");
+		}
+		if (args.command_arguments.size() == 2)
+		{
+			file_hash_sha512(args.command_arguments[0], args.command_arguments[1].c_str());
+		}
+
+		exit(EXIT_SUCCESS);
+	}
+}
diff --git a/toolsrc/src/commands_other.cpp b/toolsrc/src/commands_other.cpp
index 07549a437..53d6f2506 100644
--- a/toolsrc/src/commands_other.cpp
+++ b/toolsrc/src/commands_other.cpp
@@ -14,6 +14,7 @@ namespace vcpkg
             "  vcpkg remove --purge <pkg>      Uninstall and delete a package. \n"
             "  vcpkg list                      List installed packages\n"
             "  vcpkg update                    Display list of packages for updating\n"
+			"  vcpkg hash <file> [alg]         Hash a file by specific algorithm, default SHA512\n"
             "\n"
             "%s" // Integration help
             "\n"
@@ -93,7 +94,8 @@ namespace vcpkg
     {
         static std::vector<package_name_and_function<command_type_c>> t = {
             {"version", &version_command},
-            {"contact", &contact_command}
+            {"contact", &contact_command}, 
+			{"hash",    &hash_command },
         };
         return t;
     }