From 0b038448f244a31069779bd0ecd6b7d526ab28a1 Mon Sep 17 00:00:00 2001
From: Julien Michel <julien.michel@orfeo-toolbox.org>
Date: Mon, 2 Mar 2015 09:55:52 +0100
Subject: [PATCH] CONF: Restauring mercurial revision check, which will enable
 again the *IsNighltyRevision tests

---
 CMake/FindMercurial.cmake | 75 +++++++++++++++++++++++++++++++++++++++
 CMake/SourceStatus.cmake  | 26 ++++++++++++++
 CMakeLists.txt            |  1 +
 3 files changed, 102 insertions(+)
 create mode 100644 CMake/FindMercurial.cmake
 create mode 100644 CMake/SourceStatus.cmake

diff --git a/CMake/FindMercurial.cmake b/CMake/FindMercurial.cmake
new file mode 100644
index 0000000000..487ea156bc
--- /dev/null
+++ b/CMake/FindMercurial.cmake
@@ -0,0 +1,75 @@
+# - Extract information from a mercurial working copy
+
+# Example usage:
+#  find_package(Mercurial)
+#  if(Mercurial_FOUND)
+#    Mercurial_WC_IDENTIFY(${PROJECT_SOURCE_DIR} Project)
+#    message("Current revision is ${Project_WC_REVISION}")
+#    message("Mercurial version is ${Mercurial_VERSION_HG}")
+#  endif()
+
+
+set(Mercurial_FOUND FALSE)
+set(Mercurial_HG_FOUND FALSE)
+
+find_program(Mercurial_HG_EXECUTABLE hg
+  DOC "mercurial command line client")
+mark_as_advanced(Mercurial_HG_EXECUTABLE)
+
+if(Mercurial_HG_EXECUTABLE)
+  set(Mercurial_HG_FOUND TRUE)
+  set(Mercurial_FOUND TRUE)
+
+  macro(Mercurial_WC_IDENTIFY dir prefix)
+    # the subversion commands should be executed with the C locale, otherwise
+    # the message (which are parsed) may be translated, Alex
+    set(_Mercurial_SAVED_LC_ALL "$ENV{LC_ALL}")
+    set(ENV{LC_ALL} C)
+    execute_process(COMMAND ${Mercurial_HG_EXECUTABLE} version
+      WORKING_DIRECTORY ${dir}
+      OUTPUT_VARIABLE Mercurial_VERSION_HG
+      OUTPUT_STRIP_TRAILING_WHITESPACE ERROR_QUIET)
+
+    execute_process(COMMAND ${Mercurial_HG_EXECUTABLE} identify ${dir}
+      OUTPUT_VARIABLE ${prefix}_WC_IDENTIFY
+#      ERROR_VARIABLE Mercurial_hg_identify_error
+#      RESULT_VARIABLE Mercurial_hg_identify_result
+      OUTPUT_STRIP_TRAILING_WHITESPACE ERROR_QUIET)
+
+    execute_process(COMMAND ${Mercurial_HG_EXECUTABLE} status -m ${dir}
+      OUTPUT_VARIABLE ${prefix}_WC_STATUS
+#      ERROR_VARIABLE Mercurial_hg_status_error
+#      RESULT_VARIABLE Mercurial_hg_status_result
+      OUTPUT_STRIP_TRAILING_WHITESPACE ERROR_QUIET)
+
+    if(NOT ${Mercurial_hg_identify_result} EQUAL 0)
+      message(SEND_ERROR "Command \"${Mercurial_HG_EXECUTABLE} identify ${dir}\" failed with output:\n${Mercurial_hg_identify_error}")
+    else()
+
+      string(REGEX REPLACE "^(.*\n)?Mercurial Distributed SCM [(]version ([.0-9]+).*"
+        "\\2" Mercurial_VERSION_HG "${Mercurial_VERSION_HG}")
+      string(REGEX REPLACE "^(.*\n)?([0-9a-f]+).*"
+        "\\2" ${prefix}_WC_REVISION "${${prefix}_WC_IDENTIFY}")
+
+    endif()
+
+    # restore the previous LC_ALL
+    set(ENV{LC_ALL} ${_Mercurial_SAVED_LC_ALL})
+
+  endmacro()
+
+
+
+endif()
+
+
+
+if(NOT Mercurial_FOUND)
+  if(NOT Mercurial_FIND_QUIETLY)
+    message(STATUS "Mercurial was not found.")
+  else()
+    if(Mercurial_FIND_REQUIRED)
+      message(FATAL_ERROR "Mercurial was not found.")
+    endif()
+  endif()
+endif()
diff --git a/CMake/SourceStatus.cmake b/CMake/SourceStatus.cmake
new file mode 100644
index 0000000000..b6d94836dc
--- /dev/null
+++ b/CMake/SourceStatus.cmake
@@ -0,0 +1,26 @@
+find_package(Mercurial)
+if(Mercurial_FOUND)
+  message(STATUS "Repository status :")
+  Mercurial_WC_IDENTIFY(${PROJECT_SOURCE_DIR} OTB)
+  message(STATUS "  Mercurial version is ${Mercurial_VERSION_HG}")
+  message(STATUS "  Repository revision is ${OTB_WC_REVISION}")
+  set(OTB_WC_REVISION ${OTB_WC_REVISION} CACHE STRING "Repository version" FORCE)
+  mark_as_advanced(OTB_WC_REVISION)
+  if(OTB_WC_STATUS)
+    message(STATUS "  Local file modifications:")
+    string(REPLACE "\n" "\n--     " OTB_WC_STATUS_PRETTYPRINT "    ${OTB_WC_STATUS}")
+    message(STATUS "${OTB_WC_STATUS_PRETTYPRINT}")
+  else()
+    message(STATUS "  No files modified locally")
+  endif()
+  string(REGEX REPLACE "\n" ";" OTB_WC_STATUS "${OTB_WC_STATUS}")
+  set(OTB_WC_STATUS ${OTB_WC_STATUS} CACHE STRING "Repository status" FORCE)
+  mark_as_advanced(OTB_WC_STATUS)
+
+  if(OTB_DATA_ROOT)
+    Mercurial_WC_IDENTIFY(${OTB_DATA_ROOT} OTB_DATA)
+    set(OTB_DATA_WC_REVISION ${OTB_DATA_WC_REVISION} CACHE STRING "Repository version" FORCE)
+    mark_as_advanced(OTB_DATA_WC_REVISION)
+  endif()
+
+endif()
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9f43b752c6..774a08c753 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -48,6 +48,7 @@ if( CMAKE_HOST_WIN32 )
 endif()
 
 set(CMAKE_MODULE_PATH ${OTB_SOURCE_DIR}/CMake ${CMAKE_MODULE_PATH})
+include (SourceStatus)
 include(PreventInSourceBuilds)
 include(PreventInBuildInstalls)
 include(OTBModuleMacros)
-- 
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