Merge pull request #6 from LuisLiraC/feat/action-file

Create action file

Author: LuisLiraC

README.md

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+
+# Git Diff Action
+
+This GitHub Action performs a git diff and outputs the files that changed in a Pull Request, based on specified patterns.
+
+## Inputs
+
+### `patterns`
+
+**Required**: A string containing file patterns to include or exclude in the diff. Patterns should be separated by commas.
+
+- Use `*` as a wildcard for any number of characters.
+- Use `**` for recursive directory matching.
+- Prefix patterns with `!` to exclude files.
+
+Examples:
+- `*.rs`: All Rust files
+- `src/**/*`: All files within the `src` directory and its subdirectories
+- `!README.md`: Exclude the README.md file
+
+## Outputs
+
+### `DIFF_FILES`
+
+A list of files that changed in the PR, matching the specified patterns.
+
+### `DIFF_COUNT`
+
+The number of files that changed in the PR, matching the specified patterns.
+
+## Example usage
+
+```yaml
+name: Git Diff Check
+
+on:
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  check_diff:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Get changed files
+      id: diff
+      uses: LuisLiraC/git-diff@main
+      with:
+        patterns: '*.rs,src/**/*,!README.md'
+
+    - name: Get diff outputs
+      run: |
+        echo "Files: ${{ steps.diff.outputs.DIFF_FILES }}"
+        echo "Count: ${{ steps.diff.outputs.DIFF_COUNT }}"
+```

action.yaml

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+name: 'Git Diff'
+description: 'Action to get the files that have been changed in a pull request'
+inputs:
+  patterns:
+    description: 'Patterns to search for'
+    required: true
+outputs:
+  DIFF_FILES:
+    description: 'List of files that have been changed'
+    value: ${{ steps.get-git-diff.outputs.DIFF_FILES }}
+  DIFF_COUNT:
+    description: 'Number of files that have been changed'
+    value: ${{ steps.get-git-diff.outputs.DIFF_COUNT }}
+runs:
+  using: 'composite'
+  steps:
+    - name: Get Binary
+      shell: bash
+      run: |
+        BIN_URL=$(curl https://api.github.com/repos/LuisLiraC/git-diff/releases/latest | jq -r '.assets[0].browser_download_url')
+        echo "Downloading from $BIN_URL"
+        curl -L $BIN_URL -o rust-binary.tgz
+        tar -xzvf rust-binary.tgz
+        mv ./Linux/git-diff ./git-diff
+
+    - name: Run git-diff
+      id: get-git-diff
+      shell: bash
+      run: |
+          ./git-diff --patterns='${{ inputs.patterns }}'