add shellcheck

Author: programminghoch10

.github/workflows/shellcheck.yml

@@ -0,0 +1,17 @@
+name: ShellCheck
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  check:
+    name: Check
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Install ShellCheck
+        run: sudo apt-get install -y shellcheck
+      - name: Run shellcheck
+        run: ./shellcheck.sh

.shellcheckrc

@@ -0,0 +1,36 @@
+
+# enable additional checks
+enable=add-default-case
+enable=avoid-nullary-conditions
+enable=check-set-e-suppressed
+enable=check-unassigned-uppercase
+enable=deprecate-which
+
+# unused variable warning
+disable=SC2034
+
+# disable referenced but not assigned variables
+disable=SC2154
+
+# dont follow source files
+disable=SC1091
+
+# declare and assign seperately
+disable=SC2155
+
+
+# enforcement relaxations for magisk ash
+#  these functionalities are supported by magisk ash
+#  even if they are not posix shell compliant
+
+# source instead of .
+disable=SC3046
+
+# local function variables
+disable=SC3043
+
+# &> redirection
+disable=SC3020
+
+# IFS
+disable=SC3003

README.md

@@ -9,6 +9,7 @@ It contains many useability enhancements and all the major fixes needed to run `
 ![GitHub Global Download Counter](https://img.shields.io/github/downloads/programminghoch10/Viper4AndroidRepackaged/total?logo=github)
 ![GitHub Latest Download Counter](https://img.shields.io/github/downloads/programminghoch10/Viper4AndroidRepackaged/latest/total?logo=github) \
 ![GitHub Workflow Status](https://img.shields.io/github/actions/workflow/status/programminghoch10/ViPER4AndroidRepackaged/build.yml?logo=github%20actions&logoColor=white)
+[![GitHub Workflow ShellCheck Status](https://img.shields.io/github/actions/workflow/status/programminghoch10/ViPER4AndroidRepackaged/shellcheck.yml?logo=github%20actions&logoColor=white&label=shellcheck)](https://github.com/programminghoch10/ViPER4AndroidRepackaged/actions/workflows/shellcheck.yml)
 ![GitHub commits since last release](https://img.shields.io/github/commits-since/programminghoch10/ViPER4AndroidRepackaged/latest?logo=git&logoColor=white)
 ![GitHub last commit](https://img.shields.io/github/last-commit/programminghoch10/ViPER4AndroidRepackaged?logo=git&logoColor=white) \
 ![GitHub Repo stars](https://img.shields.io/github/stars/programminghoch10/ViPER4AndroidRepackaged?style=social) \

shellcheck.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+export IFS=$'\n'
+[ -z "$(command -v shellcheck)" ] && echo "shellcheck not installed!" >&2 && exit 1
+shellcheck --version
+
+declare -a FILES
+mapfile -t FILES < <(find . -type f -name '*.sh')
+
+shellcheck \
+    --wiki-link-count=256 \
+    "$@" \
+    "${FILES[@]}"