cmake: Teach -E copy_directory to support multiple input directories

Help/manual/cmake.1.rst

@@ -174,8 +174,9 @@ Available commands are:
   If multiple files are specified, the ``<destination>`` must be
   directory and it must exist.
 
-``copy_directory <source> <destination>``
-  Copy directory 'source' content to directory 'destination'.
+``copy_directory <dir>... <destination>``
+  Copy directories to ``<destination>`` directory.
+  If ``<destination>`` directory does not exist it will be created.
 
 ``copy_if_different <file>... <destination>``
   Copy files to ``<destination>`` (either file or directory) if

Help/release/dev/cmake-E-copy-multiple-inputs.rst

@@ -3,3 +3,6 @@ cmake-E-copy-multiple-inputs
 
 * The :manual:`cmake(1)` ``-E copy`` and ``-E copy_if_different`` command-line
   tools learned to support copying multiple input files to a directory.
+
+* The :manual:`cmake(1)` ``-E copy_directory`` command-line
+  tool learned to support copying multiple input directories to a directory.

Source/cmcmd.cxx

@@ -58,8 +58,8 @@ void CMakeCommandUsage(const char* program)
     << "  compare_files file1 file2 - check if file1 is same as file2\n"
     << "  copy <file>... destination  - copy files to destination "
        "(either file or directory)\n"
-    << "  copy_directory source destination   - copy directory 'source' "
-       "content to directory 'destination'\n"
+    << "  copy_directory <dir>... destination   - copy content of <dir>... "
+       "directories to 'destination' directory\n"
     << "  copy_if_different <file>... destination  - copy files if it has "
        "changed\n"
     << "  echo [<string>...]        - displays arguments as text\n"
@@ -206,16 +206,22 @@ int cmcmd::ExecuteCMakeCommand(std::vector<std::string>& args)
       }
 
     // Copy directory content
-    if (args[1] == "copy_directory" && args.size() == 4)
+    if (args[1] == "copy_directory" && args.size() > 3)
       {
-      if(!cmSystemTools::CopyADirectory(args[2], args[3]))
+      // If error occurs we want to continue copying next files.
+      bool return_value = 0;
+      for (std::string::size_type cc = 2; cc < args.size() - 1; cc ++)
+        {
+        if(!cmSystemTools::CopyADirectory(args[cc].c_str(),
+            args[args.size() - 1].c_str()))
           {
           std::cerr << "Error copying directory from \""
-                  << args[2] << "\" to \"" << args[3]
+                    << args[cc] << "\" to \"" << args[args.size() - 1]
                     << "\".\n";
-        return 1;
+          return_value = 1;
           }
-      return 0;
+        }
+      return return_value;
       }
 
     // Rename a file or directory

Tests/RunCMake/CommandLine/E_copy_directory-three-source-files-target-is-directory-result.txt

@@ -0,0 +1 @@
+0

Tests/RunCMake/CommandLine/E_copy_directory-three-source-files-target-is-file-result.txt

@@ -0,0 +1 @@
+1

Tests/RunCMake/CommandLine/E_copy_directory-three-source-files-target-is-file-stderr.txt

@@ -0,0 +1,3 @@
+^Error copying directory from .* to .*file_for_test.txt\".*
+Error copying directory from .* to .*file_for_test.txt\".*
+Error copying directory from .* to .*file_for_test.txt\".$

Tests/RunCMake/CommandLine/E_copy_directory-three-source-files-target-is-not-exist-result.txt

@@ -0,0 +1 @@
+0

Tests/RunCMake/CommandLine/RunCMakeTest.cmake

@@ -124,6 +124,23 @@ run_cmake_command(E_copy_if_different-three-source-files-target-is-file
 unset(in)
 unset(out)
 
+set(in ${RunCMake_SOURCE_DIR}/copy_input)
+set(out ${RunCMake_BINARY_DIR}/copy_directory_output)
+set(outfile ${out}/file_for_test.txt)
+file(REMOVE_RECURSE "${out}")
+file(MAKE_DIRECTORY ${out})
+file(WRITE ${outfile} "")
+run_cmake_command(E_copy_directory-three-source-files-target-is-directory
+  ${CMAKE_COMMAND} -E copy_directory ${in}/d1 ${in}/d2 ${in}/d3 ${out})
+run_cmake_command(E_copy_directory-three-source-files-target-is-file
+  ${CMAKE_COMMAND} -E copy_directory ${in}/d1 ${in}/d2 ${in}/d3 ${outfile})
+run_cmake_command(E_copy_directory-three-source-files-target-is-not-exist
+  ${CMAKE_COMMAND} -E copy_directory ${in}/d1 ${in}/d2 ${in}/d3 ${out}/not_existing_directory)
+unset(in)
+unset(out)
+unset(outfile)
+
+
 run_cmake_command(E_env-no-command0 ${CMAKE_COMMAND} -E env)
 run_cmake_command(E_env-no-command1 ${CMAKE_COMMAND} -E env TEST_ENV=1)
 run_cmake_command(E_env-bad-arg1 ${CMAKE_COMMAND} -E env -bad-arg1)