Add exclude and testfiles

.gitattributes

@@ -0,0 +1 @@
+* text=auto eol=lf

.github/workflows/push.yml

@@ -6,5 +6,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@master
-    - name: Shellcheck
+    - name: Run Shellcheck
-      uses: ludeeus/action-shellcheck@master
+      uses: ${GITHUB_REPOSITORY}@${GITHUB_SHA}
+      with:
+        ignore: "ignore"

Dockerfile

@@ -4,11 +4,3 @@ RUN apk add --no-cache shellcheck bash
 
 COPY runaction.sh /action/runaction.sh
 ENTRYPOINT ["bash", "/action/runaction.sh"]
-
-LABEL "name"="ShellCheck"
-LABEL "maintainer"="Ludeeus <hi@ludeeus.dev>"
-LABEL "version"="0.1.0"
-LABEL "com.github.actions.name"="ShellCheck"
-LABEL "com.github.actions.description"="GitHub action for ShellCheck."
-LABEL "com.github.actions.icon"="terminal"
-LABEL "com.github.actions.color"="black"

action.yaml

@@ -0,0 +1,14 @@
+name: "ShellCheck"
+author: "Ludeeus <hi@ludeeus.dev>"
+description: "GitHub action for ShellCheck."
+inputs:
+  ignore:
+    description: 'Paths to ignore when running ShellCheck'
+    required: false
+    default: ''
+runs: 
+  using: 'docker'
+  image: 'Dockerfile'
+branding:
+  icon: 'terminal'  
+  color: 'gray-dark'

runaction.sh

@@ -2,13 +2,23 @@
 
 cd "$GITHUB_WORKSPACE" || exit 1
 
-declare err
+declare statuscode
 declare -a filepaths
+declare -a excludes
 declare -a tmp
 
-err=0
+statuscode=0
 
-readarray -d '' filepaths < <(find . '(' \
+excludes+=( ! -path *./.git/* )
+for path in ${INPUT_IGNORE}; do
+     [[ ${path#./*} != "$path" ]] || path=./${path}
+
+    echo "::debug:: Adding '${path}' to excludes"
+    excludes+=(! -path *"${path}"* )
+done
+
+readarray -d '' filepaths < <(find . "${excludes[@]}" \
+    '(' \
     \
     -name '*.bash' \
     -o -path '*/.bash*' \
@@ -37,19 +47,19 @@ readarray -d '' filepaths < <(find . '(' \
     -print0)
 
 
-readarray -d '' tmp < <(find . -type f ! -name '*.*' -perm /111  -print0)
+readarray -d '' tmp < <(find . "${excludes[@]}" -type f ! -name '*.*' -perm /111  -print0)
 for file in "${tmp[@]}"; do
     head -n1 "$file" | grep -Eqs "^#! */[^ ]*/[abkz]*sh" || continue
     filepaths+=("$file")
 done
 
-if  find . -path '*bin/*/*' -type f -perm /111 -print |
+if  find . "${excludes[@]}" -path '*bin/*/*' -type f -perm /111 -print |
     grep .
 then
     echo >&2 "::warning:: subdirectories of bin directories are not usable via PATH"
 fi
 
-if  find . -path '*bin/*' -name '*.*' -type f -perm /111 -perm /444 -print |
+if  find . "${excludes[@]}" -path '*bin/*' -name '*.*' -type f -perm /111 -perm /444 -print |
     grep .
 then
     echo >&2 "::warning:: programs in PATH should not have a filename suffix"
@@ -57,7 +67,7 @@ fi
 
 for file in "${filepaths[@]}"; do
     echo "::debug:: Checking $file"
-    shellcheck "$file" || err=$?
+    shellcheck "$file" || statuscode=$?
 done
 
-exit "$err"
+exit "$statuscode"

testfiles/ignore/ignore.sh

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+echo $test

testfiles/test

@@ -0,0 +1,4 @@
+#!/bin/bash
+
+test="test"
+echo "$test"

testfiles/test.bash

@@ -0,0 +1,3 @@
+#!/bin/bash
+test="test"
+echo "$test"

testfiles/test.sh

@@ -0,0 +1,4 @@
+#!/usr/bin/sh
+
+test="test"
+echo "$test"