migrate cross-platform SHA to shell script

.github/actions/gradle-and-sha/action.yml

@@ -27,6 +27,5 @@ runs:
         mv ${{ inputs.intermediate-filepath }} ${{ inputs.final-filepath }}
 
     - name: "Generate SHA512"
-      uses: ./.github/actions/sha
-      with:
-        filepath: ${{ inputs.final-filepath }}
+      shell: bash
+      run: ./.github/workflows/sha.sh ${{ runner.os }} ${{ inputs.final-filepath }} 512

.github/workflows/generate-dependency-hashes.sh

@@ -3,6 +3,8 @@
 # Including their actual SHA 256, and where to verify that online
 set -e
 
+parentPath=$( cd "$(dirname "${BASH_SOURCE[0]}")" ; pwd -P )
+
 echo "Filename, SHA-1 Checksum, SHA-256 Checksum, Maven Dependency URL, Direct URL to SHA-1, Direct URL to SHA-256"
 cd ~/.gradle/caches/modules-2/files-2.1
 for filename in $(find  * -type f); do
@@ -21,7 +23,7 @@ for filename in $(find  * -type f); do
     directUrl="https://repo1.maven.org/maven2/$slashSeparatedOrg/$dependencyName/$version/$dependencyName-$version.$ext"
     directUrlToSha1="$directUrl.sha1"
     directUrlToSha256="$directUrl.sha256"
-    sha1=$(shasum -a 1 $filename | cut -f1 -d" ")
-    sha256=$(shasum -a 256 $filename | cut -f1 -d" ")
+    sha1=$($parentPath/sha.sh $filename 1)
+    sha256=$($parentPath/sha.sh $filename 256)
     echo "$filename,$sha1,$sha256,$friendlyurl,$directUrlToSha1,$directUrlToSha256"
 done

.github/workflows/release.yml

@@ -96,9 +96,8 @@ jobs:
           zipFilename: ${{steps.cachefn.outputs.FILEPATH}}
 
       - name: "Generate SHA512 for plugins cache"
-        uses: ./.github/actions/sha
-        with:
-          filepath: ${{steps.cachefn.outputs.FILEPATH}}
+        shell: bash
+        run: ./.github/workflows/sha.sh ${{steps.cachefn.outputs.FILEPATH}} ${{ runner.os }} 512
 
       - name: "Prepare keychain"
         if: matrix.os == 'macOS-latest'

.github/workflows/sha.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+# Cross-platform SHA generation
+# Usage: <filename> <OS: Windows, MacOS, or Linux> <sha version: 1, 256, or 512>
+
+set -e
+
+filename=$1
+os=$2
+a=$3
+
+
+if [ $os == 'Windows' ]; then
+    echo $(certutil -hashfile $filename SHA$a | sed -n 2p)
+elif [ $os == 'Linux' ]; then
+    echo $(sha${a}sum $filename | cut -f1 -d" ")
+else
+    echo $(shasum -a $a $filename | cut -f1 -d" ")
+fi

README.md

@@ -59,7 +59,7 @@ On Linux, you may install the .deb file, then run `/opt/rcv/bin/RCTab` to launch
 1. Download gradle from https://gradle.org/releases/ and place it in your path
 2. Download and extract the source code from [releases page](https://github.com/BrightSpots/rcv/releases)
 3. Download the appropriate cache files for your OS: cache.[OS].zip
-4. Stop the gradle daemon with `./gradlew --stop`
+4. Stop the gradle daemon with `gradle --stop`
 5. Delete the directory ~/.gradle/caches if it exists
 6. Extract cache.[OS].zip to ~/.gradle/caches so that the "caches" directory is in ~/.gradle
 7. In the extracted directory, you may manually verify each dependency using checksums.csv in accordance with your own policies