Re enable problem-matcher (#25)

Co-authored-by: Joakim Sørensen <hi@ludeeus.dev>

.github/problem-matcher.json

@@ -0,0 +1,22 @@
+{
+    "problemMatcher": [
+      {
+        "owner": "shellcheck",
+        "pattern": [
+          {
+              "regexp": "^In\\s(.+)\\sline\\s(\\d+):$",
+              "file": 1,
+              "line": 2
+          },
+          {
+            "regexp": ".*"
+          },
+          {
+              "regexp": "(SC\\d+):\\s(.+)$",
+              "code": 1,
+              "message": 2
+          }
+      ]
+      }
+    ]
+  }

.github/workflows/ShellCheck.yml

@@ -1,12 +1,14 @@
-on: push
-name: 'Trigger: Push'
+on: [push, pull_request]
+name: 'ShellCheck'
 jobs:
   shellcheck:
     name: ShellCheck
     runs-on: ubuntu-latest
     steps:
+
     - name: Checkout
-      uses: actions/checkout@master
+      uses: actions/checkout@v2
+
     - name: Run ShellCheck
       uses: ./
       with:

Dockerfile

@@ -1,6 +1,8 @@
-FROM alpine:3.11.6
+FROM alpine:3.12.0
 
 RUN apk add --no-cache shellcheck bash
 
-COPY runaction.sh /action/runaction.sh
-ENTRYPOINT ["bash", "/action/runaction.sh"]
+COPY runaction /action/runaction
+COPY .github/problem-matcher.json /problem-matcher.json
+
+ENTRYPOINT ["bash", "/action/runaction"]

README.md

@@ -17,7 +17,7 @@ jobs:
     name: Shellcheck
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@master
+    - uses: actions/checkout@v2
     - name: Run ShellCheck
       uses: ludeeus/action-shellcheck@master
 ```
@@ -57,3 +57,33 @@ example:
 ```
 
 This will skip `sample/directory/with/files/toignore/test.sh`
+
+## Minimum severity of errors to consider (error, warning, info, style)
+
+You can use the `severity` input to not fail until specified severity is met, for example fail only if there are errors in scripts but ignore styling, info and warnings.
+
+example:
+
+```yaml
+    ...
+    - name: Run ShellCheck
+      uses: ludeeus/action-shellcheck@master
+      with:
+        severity: error
+```
+
+## Run shellcheck with all paths in a single invocation
+
+If you run into SC1090/SC1091 errors you may need to tell shellcheck to check
+all files at once:
+
+```yaml
+    ...
+    - name: Run ShellCheck
+    uses: ludeeus/action-shellcheck@master
+    with:
+      check_together: 'yes'
+```
+
+This can turn into a problem if you have enough script files to overwhelm the
+maximum argv length on your system.

action.yaml

@@ -6,6 +6,14 @@ inputs:
     description: 'Paths to ignore when running ShellCheck'
     required: false
     default: ''
+  severity:
+    description: 'Minimum severity of errors to consider. Options: [error, warning, info, style]'
+    required: false
+    default: ''
+  check_together:
+    description: 'Run shellcheck on _all_ files at once, instead of one at a time'
+    required: false
+    default: ''
 runs:
   using: 'docker'
   image: 'Dockerfile'

runaction

@@ -0,0 +1,93 @@
+#!/bin/bash
+
+## Enable problem matcher
+cp /problem-matcher.json ./problem-matcher.json
+
+echo "::add-matcher::problem-matcher.json"
+
+## Run action
+cd "$GITHUB_WORKSPACE" || exit 1
+
+declare statuscode
+declare -a filepaths
+declare -a excludes
+declare -a tmp
+
+statuscode=0
+shebangregex="^#! */[^ ]*/(env *)?[abkz]*sh"
+
+excludes+=( ! -path *./.git/* )
+excludes+=( ! -path *.go )
+excludes+=( ! -path */mvnw )
+
+for path in ${INPUT_IGNORE}; do
+    echo "::debug:: Adding '${path}' to excludes"
+    excludes+=(! -path "*./${path}/*" )
+    excludes+=(! -path "*/${path}/*" )
+done
+
+readarray -d '' filepaths < <(find . -type f "${excludes[@]}" \
+    '(' \
+    \
+    -name '*.bash' \
+    -o -name '.bashrc' \
+    -o -name 'bashrc' \
+    -o -name '.bash_aliases' \
+    -o -name '.bash_completion' \
+    -o -name '.bash_login' \
+    -o -name '.bash_logout' \
+    -o -name '.bash_profile' \
+    -o -name 'bash_profile' \
+    -o -name '*.ksh' \
+    -o -name 'suid_profile' \
+    -o -name '*.zsh' \
+    -o -name '.zlogin' \
+    -o -name 'zlogin' \
+    -o -name '.zlogout' \
+    -o -name 'zlogout' \
+    -o -name '.zprofile' \
+    -o -name 'zprofile' \
+    -o -name '.zsenv' \
+    -o -name 'zsenv' \
+    -o -name '.zshrc' \
+    -o -name 'zshrc' \
+    -o -name '*.sh' \
+    -o -path '*/.profile' \
+    -o -path '*/profile' \
+    -o -name '*.shlib' \
+       ')'\
+    \
+    -print0)
+
+readarray -d '' tmp < <(find . "${excludes[@]}" -type f ! -name '*.*' -perm /111  -print0)
+for file in "${tmp[@]}"; do
+    head -n1 "$file" | grep -Eqs "$shebangregex" || continue
+    filepaths+=("$file")
+done
+
+if  find . "${excludes[@]}" -path '*bin/*/*' -type f -perm /111 -print |
+    grep .
+then
+    echo >&2 "::warning:: subdirectories of bin directories are not usable via PATH"
+fi
+
+if  find . "${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"
+fi
+
+[[ -n "${INPUT_SEVERITY}" ]] && options+=(-S "${INPUT_SEVERITY}")
+
+if [[ -n "$INPUT_CHECK_TOGETHER" ]]; then
+    echo "::debug:: shellcheck ${options[*]} ${filepaths[*]}"
+    shellcheck "${options[@]}" "${filepaths[@]}" || statuscode=$?
+else
+    echo "::debug:: Shellcheck options: ${options[*]}"
+    for file in "${filepaths[@]}"; do
+        echo "::debug:: Checking $file"
+        shellcheck "${options[@]}" "$file" || statuscode=$?
+    done
+fi
+
+exit "$statuscode"

runaction.sh

@@ -1,74 +0,0 @@
-#!/bin/bash
-
-cd "$GITHUB_WORKSPACE" || exit 1
-
-declare statuscode
-declare -a filepaths
-declare -a excludes
-declare -a tmp
-
-statuscode=0
-
-excludes+=( ! -path *./.git/* )
-excludes+=( ! -path *.go )
-excludes+=( ! -path */mvnw )
-
-for path in ${INPUT_IGNORE}; do
-    echo "::debug:: Adding '${path}' to excludes"
-    excludes+=(! -path "*./${path}/*" )
-    excludes+=(! -path "*/${path}/*" )
-done
-
-readarray -d '' filepaths < <(find . "${excludes[@]}" \
-    '(' \
-    \
-    -name '*.bash' \
-    -o -path '*/.bash*' \
-    -o -path '*/bash*' \
-    -o -name '*.ksh' \
-    -o -name 'ksh*' \
-    -o -path '*/.ksh*' \
-    -o -path '*/ksh*' \
-    -o -name 'suid_profile' \
-    -o -name '*.zsh' \
-    -o -name '.zlogin*' \
-    -o -name 'zlogin*' \
-    -o -name '.zlogout*' \
-    -o -name 'zlogout*' \
-    -o -name '.zprofile*' \
-    -o -name 'zprofile*' \
-    -o -path '*/.zsh*' \
-    -o -path '*/zsh*' \
-    -o -name '*.sh' \
-    -o -path '*/.profile*' \
-    -o -path '*/.shlib*' \
-    -o -path '*/shlib*' \
-       ')'\
-    \
-    -print0)
-
-
-readarray -d '' tmp < <(find . "${excludes[@]}" -type f ! -name '*.*' -perm /111  -print0)
-for file in "${tmp[@]}"; do
-    head -n1 "$file" | grep -Eqs "^#! */[^ ]*/[abkz]*sh" || continue
-    filepaths+=("$file")
-done
-
-if  find . "${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 . "${excludes[@]}" -path '*bin/*' -name '*.*' -type f -perm /111 -perm /444 -print |
-    grep .
-then
-    echo >&2 "::warning:: programs in PATH should not have a filename suffix"
-fi
-
-for file in "${filepaths[@]}"; do
-    echo "::debug:: Checking $file"
-    shellcheck "$file" || statuscode=$?
-done
-
-exit "$statuscode"

testfiles/bashfile.c

@@ -0,0 +1,6 @@
+/* C code test file
+ * file that should not be matched for shellcheck runs
+ */
+int main(void) {
+    return 0;
+}

testfiles/ignore/ignore.sh

@@ -1,3 +1,5 @@
 #!/bin/sh
 
-echo $test
+echo $test $test
+
+echo $test2