gitlab-ci: Add Meson linter job to prevent performance degradation

Meson broadly uses one of the few languages that it is available on
all platforms so let's take advantage of it on internal scripts.

This way, we have only one build language to care (aside Perl, which
have its own purpose) and avoid terrible bugs like: #11385.

.gitlab-ci.yml

@@ -582,6 +582,17 @@ file-plug-in-tests:
       junit: "_log/import-tests.xml"
     expire_in: 2 days
 
+meson-health:
+  extends: .default
+  rules:
+    - <<: *CI_MERGE
+    - <<: *CI_COMMIT
+  stage: analysis
+  script:
+    - apt-get update
+    - apt-get install -y git
+    - bash .gitlab/run_meson_health_diff.sh
+
 clang-format:
   extends: .default
   rules:

.gitlab/run_meson_health_diff.sh

@@ -0,0 +1,141 @@
+#!/bin/bash
+
+source .gitlab/search-common-ancestor.sh
+
+diff=$(git diff -U0 --no-color "${newest_common_ancestor_sha}" -- '*.build' | grep -E '^\+[^+]' | sed 's/^+//')
+
+
+#List of commonly used utilities on Unix world
+#See the context: https://gitlab.gnome.org/GNOME/gimp/-/issues/11385
+coreutils_array=(
+  ".sh"
+  "'sh'"
+  "'bash'"
+  "'\['"
+  "'arch'"
+  "'awk'"
+  "'b2sum'"
+  "'base32'"
+  "'base64'"
+  "'basename'"
+  "'basenc'"
+  "'cat'"
+  "'chcon'"
+  "'chgrp'"
+  "'chmod'"
+  "'chown'"
+  "'chroot'"
+  "'cksum'"
+  "'comm'"
+  "'cp'"
+  "'csplit'"
+  "'cut'"
+  "'date'"
+  "'dd'"
+  "'df'"
+  "'dir'"
+  "'dircolors'"
+  "'dirname'"
+  "'du'"
+  "'echo'"
+  "'env'"
+  "'expand'"
+  "'expr'"
+  "'factor'"
+  "'false'"
+  "'find'"
+  "'fmt'"
+  "'fold'"
+  "'gkill'"
+  "'grep'"
+  "'groups'"
+  "'head'"
+  "'hostid'"
+  "'hostname'"
+  "'id'"
+  "'install'"
+  "'join'"
+  "'link'"
+  "'ln'"
+  "'logname'"
+  "'ls'"
+  "'md5sum'"
+  "'mkdir'"
+  "'mkfifo'"
+  "'mknod'"
+  "'mktemp'"
+  "'mv'"
+  "'nice'"
+  "'nl'"
+  "'nohup'"
+  "'nproc'"
+  "'numfmt'"
+  "'od'"
+  "'paste'"
+  "'pathchk'"
+  "'pinky'"
+  "'pr'"
+  "'printenv'"
+  "'printf'"
+  "'ptx'"
+  "'pwd'"
+  "'readlink'"
+  "'realpath'"
+  "'rm'"
+  "'rmdir'"
+  "'runcon'"
+  "'sed'"
+  "'seq'"
+  "'sha1sum'"
+  "'sha224sum'"
+  "'sha256sum'"
+  "'sha384sum'"
+  "'sha512sum'"
+  "'shred'"
+  "'shuf'"
+  "'sleep'"
+  "'sort'"
+  "'split'"
+  "'stat'"
+  "'stdbuf'"
+  "'stty'"
+  "'sum'"
+  "'sync'"
+  "'tac'"
+  "'tail'"
+  "'tee'"
+  "'test'"
+  "'timeout'"
+  "'touch'"
+  "'tr'"
+  "'true'"
+  "'truncate'"
+  "'tsort'"
+  "'tty'"
+  "'uname'"
+  "'unexpand'"
+  "'uniq'"
+  "'unlink'"
+  "'users'"
+  "'vdir'"
+  "'wc'"
+  "'who'"
+  "'whoami'"
+  "'yes'"
+)
+
+for coreutil in "${coreutils_array[@]}"; do
+  if echo "$diff" | grep -q "$coreutil"; then
+    found_coreutils+=" $coreutil"
+  fi
+done
+
+if [ "$found_coreutils" ]; then
+  echo -e '\033[31m(ERROR)\033[0m: Seems that you are trying to add an Unix-specific dependency to be called by Meson.'
+  echo "         Please, port to Python (which is crossplatform), your use of:${found_coreutils}."
+  exit 1
+fi
+
+
+echo 'Meson .build files are alright regarding crossplatform.'
+exit 0

.gitlab/search-common-ancestor.sh

@@ -24,13 +24,13 @@ git fetch --shallow-since="$(date --date="${ancestor_horizon} days ago" +%Y-%m-%
 # fall back to `${CI_DEFAULT_BRANCH}` or `${CI_COMMIT_BRANCH}` respectively
 # otherwise.
 
-# add mr-origin
-git remote add mr-origin ${CI_MERGE_REQUEST_SOURCE_PROJECT_URL}
+# add patch-origin
+git remote add patch-origin ${CI_MERGE_REQUEST_SOURCE_PROJECT_URL:-${CI_PROJECT_URL}}
 
 source_branch="${CI_MERGE_REQUEST_SOURCE_BRANCH_NAME:-${CI_COMMIT_BRANCH}}"
-git fetch --shallow-since="$(date --date="${ancestor_horizon} days ago" +%Y-%m-%d)" mr-origin "${source_branch}" &> ./fetch_origin.log
+git fetch --shallow-since="$(date --date="${ancestor_horizon} days ago" +%Y-%m-%d)" patch-origin "${source_branch}" &> ./fetch_origin.log
 
-newest_common_ancestor_sha=$(diff --old-line-format='' --new-line-format='' <(git rev-list --first-parent "upstream/${CI_MERGE_REQUEST_TARGET_BRANCH_NAME:-${CI_DEFAULT_BRANCH}}") <(git rev-list --first-parent "mr-origin/${source_branch}") | head -1)
+newest_common_ancestor_sha=$(diff --old-line-format='' --new-line-format='' <(git rev-list --first-parent "upstream/${CI_MERGE_REQUEST_TARGET_BRANCH_NAME:-${CI_DEFAULT_BRANCH}}") <(git rev-list --first-parent "patch-origin/${source_branch}") | head -1)
 if [ -z "${newest_common_ancestor_sha}" ]; then
     echo "Couldn’t find common ancestor with upstream main branch. This typically"
     echo "happens if you branched from main a long time ago. Please update"