Update link check to have ignore patterns

Author: Felix Exner

.github/helpers/check_urls.sh

@@ -2,14 +2,54 @@
 
 set -e
 
+IGNORE_FILES=""
+IGNORE_PATTERNS=""
+
+while getopts ":f:d:p:" opt; do
+    case "${opt}" in
+        f)
+            IGNORE_FILES="${OPTARG}";;
+        d)
+            IGNORE_DIRS="${OPTARG}";;
+        p)
+            IGNORE_PATTERNS="${OPTARG}";;
+        \?)
+            echo "Invalid option -$OPTARG"
+            exit;;
+    esac
+done
+
+read -r -a ignore_files <<<"$IGNORE_FILES"
+read -r -a ignore_dirs <<<"$IGNORE_DIRS"
+read -r -a ignore_patterns <<<"$IGNORE_PATTERNS"
+
+IGNORE_FILES_ARG=""
+for item in "${!ignore_files[@]}"; do
+  IGNORE_FILES_ARG="$IGNORE_FILES_ARG--exclude=$item"
+done
+IGNORE_DIRS_ARG=""
+for item in "${!ignore_dirs[@]}"; do
+  IGNORE_DIRS_ARG="$IGNORE_DIRS_ARG--exclude-dir=$item"
+done
+
 #Find URLs in code:
-urls=$(grep -oP "(http|ftp|https):\/\/([a-zA-Z0-9_-]+(?:(?:\.[a-zA-Z0-9_-]+)+))([a-zA-Z0-9_.,@?^=%&:\/~+#-]*[a-zA-Z0-9_@?^=%&\/~+#-])?" "$@")
+urls=$(grep -oP '(http|ftp|https):\/\/([a-zA-Z0-9_-]+(?:(?:\.[a-zA-Z0-9_-]+)+))([a-zA-Z0-9_.,@?^=%&:\/~+#-]*[a-zA-Z0-9_@?^=%&\/~+#-])?' -rI $IGNORE_FILES_ARG $IGNORE_DIRS_ARG)
 
 fail_counter=0
 
 FAILED_LINKS=()
 for item in $urls; do
 #     echo $item
+    skip=0
+    for pattern in "${!ignore_patterns[@]}"; do
+      [[ "$item" =~ $pattern ]] && skip=1
+    done
+
+    if [[ $skip == 1 ]]; then
+      echo "SKIPPING $item"
+      continue
+    fi
+
     filename=$(echo "$item" | cut -d':' -f1)
     url=$(echo "$item" | cut -d':' -f2-)
     echo -n "Checking $url from file $filename"

.github/workflows/check_links.yml

@@ -13,10 +13,7 @@ jobs:
       - uses: actions/checkout@v2
       - name: Check URLs
         run: |
-          .github/helpers/check_urls.sh -rI \
-            --exclude-dir=.git \
-            --exclude-dir=build/ \
-            --exclude=package.xml \
-            --exclude-dir=CMakeModules \
-            --exclude-dir=debian \
-            --exclude=ursim_docker.rst \
+          .github/helpers/check_urls.sh \
+            -d ".git build CMakeModules debian" \
+            -f "package.xml ursim_docker.rst" \
+            -p "vnc\.html"