Handle tar in macOS.

README.md

@@ -10,12 +10,33 @@ rcdailey/download-tar-action.yml](https://gist.github.com/rcdailey/cd3437bb2c636
 
 ## Fixed behavior compared to `actions/upload-artifact`
 
+*tbd*
+
+1. Preserve file permissions
+2. Defined root directory from where the content of the tarball is constructed.
+
+## Limitations of `tar`
+
+### On Linux
+
+*tbd*
+
+
+### On macOS
+
+*tbd*
+
+
+### On Windows
+
+*tbd*
 
 
 ## Dependencies
 
 * [actions/upload-artifact@v4](https://github.com/actions/upload-artifact)
 
+
 ## Contributors
 
 * [Patrick Lehmann](https://GitHub.com/Paebbels) (Maintainer)

action.yml

@@ -140,8 +140,21 @@ runs:
           done | sort | uniq
         }
         
+        echo -e "Checking tar ($(which tar)): ${ANSI_CYAN}$(tar --version | head -n 1)${ANSI_NOCOLOR}"
+        echo -n "Assemble OS specific tar command line options ... "
+        if [[ "${{ runner.os }}" == "macOS" ]]; then
+          echo -e "${ANSI_Y}[macOS]${ANSI_NOCOLOR}"
+          filesFrom=("-T")
+        elif [[ "${{ runner.os }}" == "Linux" || "${{ runner.os }}" == "Windows" ]]; then
+          echo -e "${ANSI_LIGHT_GREEN}[${{ runner.os }}]${ANSI_NOCOLOR}"
+          filesFrom=("--verbatim-files-from" "--files-from")
+        else
+          echo -e "${ANSI_LIGHT_RED}[UNSUPPORTED]${ANSI_NOCOLOR}"
+          exit 1
+        fi
+        
         echo -n "Creating temporary tarball '${tar_directory}${{ inputs.tarball-name }}' ... "
-        tar -cf "${tar_directory}${{ inputs.tarball-name }}" --verbatim-files-from --files-from <(print_files_unique "${PATTERNS[@]}")
+        tar -cf "${tar_directory}${{ inputs.tarball-name }}" "${filesFrom[@]}" <(print_files_unique "${PATTERNS[@]}")
         if [[ $? -ne 0 ]]; then
           echo -e "${ANSI_LIGHT_RED}[FAILED]${ANSI_NOCOLOR}"
           exit 1