execute_process: Add ENCODING option for Windows child process output

Different applications can use different output encodings.

11 files changed, 78 insertions, 0 deletions

diff --git a/Tests/CMakeLib/CMakeLists.txt b/Tests/CMakeLib/CMakeLists.txt
index 405917a..d680205 100644
--- a/Tests/CMakeLib/CMakeLists.txt
+++ b/Tests/CMakeLib/CMakeLists.txt
@@ -31,6 +31,9 @@ create_test_sourcelist(CMakeLib_TEST_SRCS CMakeLibTests.cxx ${CMakeLib_TESTS})
 add_executable(CMakeLibTests ${CMakeLib_TEST_SRCS})
 target_link_libraries(CMakeLibTests CMakeLib)
 
+add_executable(testEncoding testEncoding.cxx)
+target_link_libraries(testEncoding cmsys)
+
 # Xcode 2.x forgets to create the output directory before linking
 # the individual architectures.
 if(CMAKE_OSX_ARCHITECTURES AND XCODE
diff --git a/Tests/CMakeLib/testEncoding.cxx b/Tests/CMakeLib/testEncoding.cxx
new file mode 100644
index 0000000..88743b0
--- /dev/null
+++ b/Tests/CMakeLib/testEncoding.cxx
@@ -0,0 +1,49 @@
+#include <fstream>
+#include <iostream>
+#include <string>
+
+#include <cmsys/ConsoleBuf.hxx>
+
+#ifdef _WIN32
+void setEncoding(cmsys::ConsoleBuf::Manager& buf, UINT codepage)
+{
+  cmsys::ConsoleBuf* cb = buf.GetConsoleBuf();
+  if (cb) {
+    cb->input_pipe_codepage = codepage;
+    cb->output_pipe_codepage = codepage;
+    cb->input_file_codepage = codepage;
+    cb->output_file_codepage = codepage;
+    cb->activateCodepageChange();
+  }
+}
+#endif
+
+int main(int argc, char* argv[])
+{
+#ifdef _WIN32
+  cmsys::ConsoleBuf::Manager consoleOut(std::cout);
+#endif
+  if (argc <= 2) {
+    std::cout << "Usage: testEncoding <encoding> <file>" << std::endl;
+    return 1;
+  }
+  const std::string encoding(argv[1]);
+#ifdef _WIN32
+  if (encoding == "UTF8") {
+    setEncoding(consoleOut, CP_UTF8);
+  } else if (encoding == "ANSI") {
+    setEncoding(consoleOut, CP_ACP);
+  } else if (encoding == "OEM") {
+    setEncoding(consoleOut, CP_OEMCP);
+  } // else AUTO
+#endif
+  std::ifstream file(argv[2]);
+  if (!file.is_open()) {
+    std::cout << "Failed to open file: " << argv[2] << std::endl;
+    return 2;
+  }
+  std::string text((std::istreambuf_iterator<char>(file)),
+                   std::istreambuf_iterator<char>());
+  std::cout << text;
+  return 0;
+}
diff --git a/Tests/RunCMake/CMakeLists.txt b/Tests/RunCMake/CMakeLists.txt
index 9dc540f..c02b917 100644
--- a/Tests/RunCMake/CMakeLists.txt
+++ b/Tests/RunCMake/CMakeLists.txt
@@ -179,6 +179,9 @@ add_RunCMake_test(add_custom_target)
 add_RunCMake_test(add_dependencies)
 add_RunCMake_test(add_subdirectory)
 add_RunCMake_test(build_command)
+if(NOT CMake_TEST_EXTERNAL_CMAKE)
+  set(execute_process_ARGS -DTEST_ENCODING_EXE=$<TARGET_FILE:testEncoding>)
+endif()
 add_RunCMake_test(execute_process)
 add_RunCMake_test(export)
 add_RunCMake_test(cmake_minimum_required)
diff --git a/Tests/RunCMake/RunCMake.cmake b/Tests/RunCMake/RunCMake.cmake
index 247855a..6cc3054 100644
--- a/Tests/RunCMake/RunCMake.cmake
+++ b/Tests/RunCMake/RunCMake.cmake
@@ -75,6 +75,7 @@ function(run_cmake test)
       OUTPUT_VARIABLE actual_stdout
       ERROR_VARIABLE ${actual_stderr_var}
       RESULT_VARIABLE actual_result
+      ENCODING UTF8
       ${maybe_timeout}
       )
   else()
@@ -90,6 +91,7 @@ function(run_cmake test)
       OUTPUT_VARIABLE actual_stdout
       ERROR_VARIABLE ${actual_stderr_var}
       RESULT_VARIABLE actual_result
+      ENCODING UTF8
       ${maybe_timeout}
       )
   endif()
diff --git a/Tests/RunCMake/execute_process/CMakeLists.txt b/Tests/RunCMake/execute_process/CMakeLists.txt
new file mode 100644
index 0000000..a640c56
--- /dev/null
+++ b/Tests/RunCMake/execute_process/CMakeLists.txt
@@ -0,0 +1,3 @@
+cmake_minimum_required(VERSION 3.7)
+project(${RunCMake_TEST} NONE)
+include(${RunCMake_TEST}.cmake)
diff --git a/Tests/RunCMake/execute_process/Encoding.cmake b/Tests/RunCMake/execute_process/Encoding.cmake
new file mode 100644
index 0000000..3dc7c39
--- /dev/null
+++ b/Tests/RunCMake/execute_process/Encoding.cmake
@@ -0,0 +1,6 @@
+execute_process(
+  COMMAND ${TEST_ENCODING_EXE} ${TEST_ENCODING} ${CMAKE_CURRENT_LIST_DIR}/EncodingUTF8-stderr.txt
+  OUTPUT_VARIABLE out
+  ENCODING ${TEST_ENCODING}
+  )
+message("${out}")
diff --git a/Tests/RunCMake/execute_process/EncodingMissing-result.txt b/Tests/RunCMake/execute_process/EncodingMissing-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/execute_process/EncodingMissing-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/execute_process/EncodingMissing-stderr.txt b/Tests/RunCMake/execute_process/EncodingMissing-stderr.txt
new file mode 100644
index 0000000..1a69579
--- /dev/null
+++ b/Tests/RunCMake/execute_process/EncodingMissing-stderr.txt
@@ -0,0 +1,4 @@
+^CMake Error at EncodingMissing.cmake:[0-9]+ \(execute_process\):
+  execute_process called with no value for ENCODING.
+Call Stack \(most recent call first\):
+  CMakeLists.txt:[0-9]+ \(include\)$
diff --git a/Tests/RunCMake/execute_process/EncodingMissing.cmake b/Tests/RunCMake/execute_process/EncodingMissing.cmake
new file mode 100644
index 0000000..ae97480
--- /dev/null
+++ b/Tests/RunCMake/execute_process/EncodingMissing.cmake
@@ -0,0 +1 @@
+execute_process(ENCODING)
diff --git a/Tests/RunCMake/execute_process/EncodingUTF8-stderr.txt b/Tests/RunCMake/execute_process/EncodingUTF8-stderr.txt
new file mode 100644
index 0000000..0ac68de
--- /dev/null
+++ b/Tests/RunCMake/execute_process/EncodingUTF8-stderr.txt
@@ -0,0 +1 @@
+यूनिकोड είναι very здорово!
diff --git a/Tests/RunCMake/execute_process/RunCMakeTest.cmake b/Tests/RunCMake/execute_process/RunCMakeTest.cmake
index 2080437..62e18c6 100644
--- a/Tests/RunCMake/execute_process/RunCMakeTest.cmake
+++ b/Tests/RunCMake/execute_process/RunCMakeTest.cmake
@@ -6,3 +6,8 @@ unset(RunCMake_TEST_OUTPUT_MERGE)
 
 run_cmake_command(MergeOutputFile ${CMAKE_COMMAND} -P ${RunCMake_SOURCE_DIR}/MergeOutputFile.cmake)
 run_cmake_command(MergeOutputVars ${CMAKE_COMMAND} -P ${RunCMake_SOURCE_DIR}/MergeOutputVars.cmake)
+
+run_cmake(EncodingMissing)
+if(TEST_ENCODING_EXE)
+  run_cmake_command(EncodingUTF8 ${CMAKE_COMMAND} -DTEST_ENCODING=UTF8 -DTEST_ENCODING_EXE=${TEST_ENCODING_EXE} -P ${RunCMake_SOURCE_DIR}/Encoding.cmake)
+endif()