Merge topic 'format-all-tool'

b4a37435 format.all: add a tool to run all formatters
Acked-by: Kitware Robot <kwrobot@kitware.com>
Reviewed-by: Brad King <brad.king@kitware.com>
Merge-request: !4

src/CMakeLists.txt

@@ -48,3 +48,36 @@ endfunction ()
 add_subdirectory(c)
 add_subdirectory(python)
 add_subdirectory(rust)
+
+get_property(formatters GLOBAL
+  PROPERTY formatters)
+if (formatters)
+  set(formatters_build)
+  set(formatters_install)
+  foreach (formatter IN LISTS formatters)
+    if (NOT ENABLE_${formatter})
+      continue ()
+    endif ()
+
+    get_property("format_${formatter}_script" GLOBAL
+      PROPERTY "formatter_${formatter}_script")
+    string(APPEND formatters_build "format_all '${formatter}' '${format_${formatter}_script}'\n")
+    string(APPEND formatters_install "format_all '${formatter}' 'format.${formatter}'\n")
+  endforeach ()
+
+  set(formatter_calls "${formatters_build}")
+  configure_file(
+    "${CMAKE_CURRENT_SOURCE_DIR}/format.all.in"
+    "${CMAKE_BINARY_DIR}/bin/format.all"
+    @ONLY)
+
+  set(formatter_calls "${formatters_install}")
+  configure_file(
+    "${CMAKE_CURRENT_SOURCE_DIR}/format.all.in"
+    "${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/format.all"
+    @ONLY)
+  install(
+    FILES       "${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/format.all"
+    DESTINATION "bin"
+    COMPONENT   "formatters")
+endif ()

src/format.all.in

+#!/bin/sh
+# This program formats a repository according to the formatting scripts
+# available in the current build.
+#
+# This is really meant to be copied as an example and tweaked to be more
+# specific to a project and then used to make a clean branch for the project
+# after which, code may use the formatters to check new code for unformatted
+# code.
+
+set -e
+
+if ! which "parallel" > /dev/null; then
+    echo >&2 'error: could not find the `parallel` binary'
+    exit 3
+fi
+
+if ! git rev-parse --is-inside-work-tree; then
+    echo >&2 'error: this must be run from inside of a Git work tree'
+    exit 1
+fi
+
+# Move to the top of the work tree.
+cd "$( git rev-parse --show-toplevel )"
+
+format_all () {
+    local kind="$1"
+    readonly kind
+    shift
+
+    local formatter="$1"
+    readonly formatter
+    shift
+
+    git ls-files | \
+        git check-attr --stdin "format.$kind" | \
+        sed -n -e '/: set$/ s/:[^:]*:[^:]*$//p' | \
+        parallel "$formatter" '{}'
+}
+
+@formatter_calls@
+: