ci: Add a script to generate erlang_ls config

scripts/gen-erlang-ls-config.sh

@@ -0,0 +1,116 @@
+#!/bin/bash
+set -eou pipefail
+shopt -s nullglob
+
+# Our fork of rebar3 copies those directories from apps to
+# _build/default/lib rather than just making a symlink. Now erlang_ls
+# sees the same module twice and if you're just navigating through the
+# call stack you accidentally end up editing files in
+# _build/default/lib rather than apps
+
+usage() {
+    cat <<EOF
+Generate configuration for erlang_ls
+
+USAGE:
+
+   $(basename "${0}") [-t TEMPLATE_FILE]
+
+OPTIONS:
+
+   -h  Get this help
+   -t  Path to the YAML file containing additional options for erlang ls
+       that will be added to the generated file
+EOF
+    exit 1
+}
+
+default_template()
+{
+    cat <<EOF
+diagnostics:
+  enabled:
+    - bound_var_in_pattern
+    - elvis
+    - unused_includes
+    - unused_macros
+    - crossref
+    # - dialyzer
+    - compiler
+  disabled:
+    - dialyzer
+    # - crossref
+    # - compiler
+lenses:
+  disabled:
+    # - show-behaviour-usages
+    # - ct-run-test
+    - server-info
+  enable:
+    - show-behaviour-usages
+    - ct-run-test
+macros:
+  - name: EMQX_RELEASE_EDITION
+    value: ee
+code_reload:
+  node: emqx@127.0.0.1
+EOF
+}
+
+template="$(default_template)"
+
+while getopts "ht:" opt; do
+    case "${opt}" in
+        h) usage ;;
+        t) template=$(cat "${OPTARG}") ;;
+        *) ;;
+    esac
+done
+
+deps_dirs()
+{
+    local app
+    for dir in _build/default/lib/*; do
+        app=$(basename "${dir}")
+        ## Only add applications that are not part of EMQX umbrella project:
+        [ -d "apps/${app}" ] || [ -d "lib-ce/${app}" ] || [ -d "lib-ee/${app}" ] ||
+            echo "  - \"${dir}\""
+    done
+}
+
+find_plt() {
+    for plt in emqx_dialyzer_*_plt; do
+        cat <<EOF
+plt_path:
+  - "${plt}"
+EOF
+        break
+    done
+}
+
+cat <<EOF
+apps_dirs:
+  - "apps/*"
+  - "lib-ce/*"
+  - "lib-ee/*"
+deps_dirs:
+$(deps_dirs)
+  - "_build/test/lib/bbmustache"
+  - "_build/test/lib/meck"
+  - "_build/test/lib/proper"
+  - "_build/test/lib/erl_csv"
+include_dirs:
+  - "apps/"
+  - "apps/*/include"
+  - "_build/default/lib/typerefl/include"
+  - "_build/default/lib/"
+  - "_build/default/lib/*/include"
+  - "_build/test/lib/bbmustache"
+  - "_build/test/lib/meck"
+  - "_build/test/lib/proper"
+exclude_unused_includes:
+  - "typerefl/include/types.hrl"
+  - "logger.hrl"
+$(find_plt)
+${template}
+EOF