From f6242d36190af61b72a4bf6defe90a7d96485d30 Mon Sep 17 00:00:00 2001
From: Ross Anderson <ross.anderson87@gmail.com>
Date: Wed, 22 Dec 2021 18:50:37 -0800
Subject: [PATCH] Add multiline support

---
 README.md     | 33 +++++++++++++++++++++++++++++++++
 action.yml    |  5 +++++
 entrypoint.sh | 10 ++++++++++
 3 files changed, 48 insertions(+)

diff --git a/README.md b/README.md
index 5213463..23cd952 100644
--- a/README.md
+++ b/README.md
@@ -7,6 +7,15 @@ Run jq on your data and get result as output
 ### `cmd`
 **Required** This is the actual command that will be passed along
 
+### `multiline`
+Optional. Default `false`.
+
+If `multiline: true`, multiple lines of output will be captured. Useful
+for capturing lists.
+
+If `multiline: false`, only the first line of the output will be
+captured. The rest will be written to stdout.
+
 ## Outputs
 
 ### `value`
@@ -37,3 +46,27 @@ jobs:
       - name: Show my version
         run: 'echo "version ${{ steps.version.outputs.value }}"'
 ```
+
+## Using multiline output
+
+```yaml
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    
+      - name: Extract all keywords from package.json
+        uses: sergeysova/jq-action@v2
+        id: keywords
+        with:
+          cmd: 'jq .keywords[] package.json -r'
+          multiline: true
+      
+      - name: Show keywords
+        run: |
+          keywords="${{ steps.keywords.outputs.value }}"
+          for keyword in $keywords; do
+            echo "$keyword"
+          done
+
+```
diff --git a/action.yml b/action.yml
index e6b82d0..37ac150 100644
--- a/action.yml
+++ b/action.yml
@@ -7,6 +7,11 @@ inputs:
   cmd:
     description: 'jq command with arguments'
     required: true
+  multiline:
+    description: 'If true, support multiline output'
+    required: false
+    type: boolean
+    default: false
 outputs:
   value:
     description: 'What jq is outputs'
diff --git a/entrypoint.sh b/entrypoint.sh
index ae6719d..c544074 100755
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -1,4 +1,14 @@
 #!/bin/bash
 set -e
 
+OUTPUT=$(eval $INPUT_CMD)
+
+# Multiline string handling, per Github Community recommendation:
+# https://github.community/t/set-output-truncates-multiline-strings/16852/3
+if ($INPUT_MULTILINE); then
+  OUTPUT="${OUTPUT//'%'/'%25'}"
+  OUTPUT="${OUTPUT//$'\n'/'%0A'}"
+  OUTPUT="${OUTPUT//$'\r'/'%0D'}"
+fi
+
 echo "::set-output name=value::$(eval $INPUT_CMD)"