ExternalProject: Move inline scripts to separate files

This makes the scripts easier to work on, since the separate files
don't require the extra level of escaping that the inlined code did.
This also means the scripts can be rendered with appropriate
syntax highlighting in IDEs, etc.

5 files changed, 207 insertions, 0 deletions

diff --git a/Modules/ExternalProject/cfgcmd.txt.in b/Modules/ExternalProject/cfgcmd.txt.in
new file mode 100644
index 0000000..b3f09ef
--- /dev/null
+++ b/Modules/ExternalProject/cfgcmd.txt.in
@@ -0,0 +1 @@
+cmd='@cmd@'
diff --git a/Modules/ExternalProject/extractfile.cmake.in b/Modules/ExternalProject/extractfile.cmake.in
new file mode 100644
index 0000000..d7f5756
--- /dev/null
+++ b/Modules/ExternalProject/extractfile.cmake.in
@@ -0,0 +1,65 @@
+# Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+# file Copyright.txt or https://cmake.org/licensing for details.
+
+cmake_minimum_required(VERSION 3.5)
+
+# Make file names absolute:
+#
+get_filename_component(filename "@filename@" ABSOLUTE)
+get_filename_component(directory "@directory@" ABSOLUTE)
+
+message(STATUS "extracting...
+     src='${filename}'
+     dst='${directory}'"
+)
+
+if(NOT EXISTS "${filename}")
+  message(FATAL_ERROR "File to extract does not exist: '${filename}'")
+endif()
+
+# Prepare a space for extracting:
+#
+set(i 1234)
+while(EXISTS "${directory}/../ex-@name@${i}")
+  math(EXPR i "${i} + 1")
+endwhile()
+set(ut_dir "${directory}/../ex-@name@${i}")
+file(MAKE_DIRECTORY "${ut_dir}")
+
+# Extract it:
+#
+message(STATUS "extracting... [tar @args@]")
+execute_process(COMMAND ${CMAKE_COMMAND} -E tar @args@ ${filename}
+  WORKING_DIRECTORY ${ut_dir}
+  RESULT_VARIABLE rv
+)
+
+if(NOT rv EQUAL 0)
+  message(STATUS "extracting... [error clean up]")
+  file(REMOVE_RECURSE "${ut_dir}")
+  message(FATAL_ERROR "Extract of '${filename}' failed")
+endif()
+
+# Analyze what came out of the tar file:
+#
+message(STATUS "extracting... [analysis]")
+file(GLOB contents "${ut_dir}/*")
+list(REMOVE_ITEM contents "${ut_dir}/.DS_Store")
+list(LENGTH contents n)
+if(NOT n EQUAL 1 OR NOT IS_DIRECTORY "${contents}")
+  set(contents "${ut_dir}")
+endif()
+
+# Move "the one" directory to the final directory:
+#
+message(STATUS "extracting... [rename]")
+file(REMOVE_RECURSE ${directory})
+get_filename_component(contents ${contents} ABSOLUTE)
+file(RENAME ${contents} ${directory})
+
+# Clean up:
+#
+message(STATUS "extracting... [clean up]")
+file(REMOVE_RECURSE "${ut_dir}")
+
+message(STATUS "extracting... done")
diff --git a/Modules/ExternalProject/gitclone.cmake.in b/Modules/ExternalProject/gitclone.cmake.in
new file mode 100644
index 0000000..3312171
--- /dev/null
+++ b/Modules/ExternalProject/gitclone.cmake.in
@@ -0,0 +1,73 @@
+# Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+# file Copyright.txt or https://cmake.org/licensing for details.
+
+cmake_minimum_required(VERSION 3.5)
+
+if(EXISTS "@gitclone_stampfile@" AND EXISTS "@gitclone_infofile@" AND
+  "@gitclone_stampfile@" IS_NEWER_THAN "@gitclone_infofile@")
+  message(STATUS
+    "Avoiding repeated git clone, stamp file is up to date: "
+    "'@gitclone_stampfile@'"
+  )
+  return()
+endif()
+
+execute_process(
+  COMMAND ${CMAKE_COMMAND} -E rm -rf "@source_dir@"
+  RESULT_VARIABLE error_code
+)
+if(error_code)
+  message(FATAL_ERROR "Failed to remove directory: '@source_dir@'")
+endif()
+
+# try the clone 3 times in case there is an odd git clone issue
+set(error_code 1)
+set(number_of_tries 0)
+while(error_code AND number_of_tries LESS 3)
+  execute_process(
+    COMMAND "@git_EXECUTABLE@" @git_options@
+            clone @git_clone_options@ "@git_repository@" "@src_name@"
+    WORKING_DIRECTORY "@work_dir@"
+    RESULT_VARIABLE error_code
+  )
+  math(EXPR number_of_tries "${number_of_tries} + 1")
+endwhile()
+if(number_of_tries GREATER 1)
+  message(STATUS "Had to git clone more than once: ${number_of_tries} times.")
+endif()
+if(error_code)
+  message(FATAL_ERROR "Failed to clone repository: '@git_repository@'")
+endif()
+
+execute_process(
+  COMMAND "@git_EXECUTABLE@" @git_options@
+          checkout "@git_tag@" @git_checkout_explicit--@
+  WORKING_DIRECTORY "@work_dir@/@src_name@"
+  RESULT_VARIABLE error_code
+)
+if(error_code)
+  message(FATAL_ERROR "Failed to checkout tag: '@git_tag@'")
+endif()
+
+set(init_submodules @init_submodules@)
+if(init_submodules)
+  execute_process(
+    COMMAND "@git_EXECUTABLE@" @git_options@
+            submodule update @git_submodules_recurse@ --init @git_submodules@
+    WORKING_DIRECTORY "@work_dir@/@src_name@"
+    RESULT_VARIABLE error_code
+  )
+endif()
+if(error_code)
+  message(FATAL_ERROR "Failed to update submodules in: '@work_dir@/@src_name@'")
+endif()
+
+# Complete success, update the script-last-run stamp file:
+#
+execute_process(
+  COMMAND ${CMAKE_COMMAND} -E copy "@gitclone_infofile@" "@gitclone_stampfile@"
+  RESULT_VARIABLE error_code
+)
+if(error_code)
+  message(FATAL_ERROR "Failed to copy script-last-run stamp file: '@gitclone_stampfile@'")
+endif()
diff --git a/Modules/ExternalProject/hgclone.cmake.in b/Modules/ExternalProject/hgclone.cmake.in
new file mode 100644
index 0000000..e2b55ba
--- /dev/null
+++ b/Modules/ExternalProject/hgclone.cmake.in
@@ -0,0 +1,49 @@
+# Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+# file Copyright.txt or https://cmake.org/licensing for details.
+
+cmake_minimum_required(VERSION 3.5)
+
+if(EXISTS "@hgclone_stampfile@" AND EXISTS "@hgclone_infofile@" AND
+  "@hgclone_stampfile@" IS_NEWER_THAN "@hgclone_infofile@")
+  message(STATUS
+    "Avoiding repeated hg clone, stamp file is up to date: "
+    "'@hgclone_stampfile@'"
+  )
+  return()
+endif()
+
+execute_process(
+  COMMAND ${CMAKE_COMMAND} -E rm -rf "@source_dir@"
+  RESULT_VARIABLE error_code
+)
+if(error_code)
+  message(FATAL_ERROR "Failed to remove directory: '@source_dir@'")
+endif()
+
+execute_process(
+  COMMAND "@hg_EXECUTABLE@" clone -U "@hg_repository@" "@src_name@"
+  WORKING_DIRECTORY "@work_dir@"
+  RESULT_VARIABLE error_code
+)
+if(error_code)
+  message(FATAL_ERROR "Failed to clone repository: '@hg_repository@'")
+endif()
+
+execute_process(
+  COMMAND "@hg_EXECUTABLE@" update @hg_tag@
+  WORKING_DIRECTORY "@work_dir@/@src_name@"
+  RESULT_VARIABLE error_code
+)
+if(error_code)
+  message(FATAL_ERROR "Failed to checkout tag: '@hg_tag@'")
+endif()
+
+# Complete success, update the script-last-run stamp file:
+#
+execute_process(
+  COMMAND ${CMAKE_COMMAND} -E copy "@hgclone_infofile@" "@hgclone_stampfile@"
+  RESULT_VARIABLE error_code
+)
+if(error_code)
+  message(FATAL_ERROR "Failed to copy script-last-run stamp file: '@hgclone_stampfile@'")
+endif()
diff --git a/Modules/ExternalProject/mkdirs.cmake.in b/Modules/ExternalProject/mkdirs.cmake.in
new file mode 100644
index 0000000..d30a2e7
--- /dev/null
+++ b/Modules/ExternalProject/mkdirs.cmake.in
@@ -0,0 +1,19 @@
+# Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+# file Copyright.txt or https://cmake.org/licensing for details.
+
+cmake_minimum_required(VERSION 3.5)
+
+file(MAKE_DIRECTORY
+  "@source_dir@"
+  "@binary_dir@"
+  "@install_dir@"
+  "@tmp_dir@"
+  "@stamp_dir@"
+  "@download_dir@"
+  "@log_dir@"
+)
+
+set(configSubDirs @CMAKE_CONFIGURATION_TYPES@)
+foreach(subDir IN LISTS configSubDirs)
+    file(MAKE_DIRECTORY "@stamp_dir@/${subDir}")
+endforeach()