Replace dead Travis CI with GitHub Actions

.github/dependabot.yml

@@ -0,0 +1,9 @@
+version: 2
+updates:
+  - package-ecosystem: github-actions
+    directory: /
+    schedule:
+      interval: weekly
+    groups:
+      actions:
+        patterns: ["*"]

.github/workflows/ci.yml

@@ -0,0 +1,54 @@
+name: CI
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+  workflow_dispatch:
+  schedule:
+    - cron: "0 6 1 * *" # monthly: catch breakage when a new Go release becomes "stable"
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
+jobs:
+  test:
+    name: Test (Go ${{ matrix.go }})
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    strategy:
+      fail-fast: false
+      matrix:
+        # 1.19 is the minimum from go.mod; oldstable/stable are the two supported Go releases.
+        go: ["1.19", "oldstable", "stable"]
+    steps:
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+      - uses: actions/setup-go@b7ad1dad31e06c5925ef5d2fc7ad053ef454303e # v7.0.0
+        with:
+          go-version: ${{ matrix.go }}
+          cache: false # no dependencies to cache
+      - run: go vet ./...
+      - run: go test -race -shuffle=on -count=1 -covermode=atomic -coverprofile=coverage.out ./...
+      - if: matrix.go == 'stable'
+        uses: coverallsapp/github-action@8d6379e14d29928660c4ba802d8e85393440b329 # v2.3.8
+        with:
+          file: coverage.out
+          format: golang
+          fail-on-error: false
+
+  lint:
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    steps:
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+      - uses: actions/setup-go@b7ad1dad31e06c5925ef5d2fc7ad053ef454303e # v7.0.0
+        with:
+          go-version: stable
+          cache: false
+      - uses: golangci/golangci-lint-action@ba0d7d2ec06a0ea1cb5fa41b2e4a3ab91d21278a # v9.3.0
+        with:
+          version: v2.15.0 # not updated by Dependabot; bump manually

.golangci.yml

@@ -0,0 +1,17 @@
+version: "2"
+linters:
+  exclusions:
+    rules:
+      - path: '_test\.go'
+        text: 'QF1010'
+formatters:
+  enable:
+    - gofumpt
+    - goimports
+  settings:
+    gofumpt:
+      extra:
+        group-params: true
+    goimports:
+      local-prefixes:
+        - github.com/dimchansky/utfbom

Makefile

@@ -9,15 +9,15 @@ test_race:
 test_cover:
 	@go test -cover -covermode=atomic .
 
+# tested with golangci-lint v2.15.0 (same version as CI)
 fmt:
-	@goimports -w -local github.com/dimchansky/utfbom .
-	@gofumpt -w -extra .
+	@golangci-lint fmt
 
 vet:
 	@go vet .
 
 lint:
-	@golint ./...
+	@golangci-lint run
 
 fix:
 	@go fix .

README.md

@@ -1,4 +1,4 @@
-# utfbom [![Godoc](https://godoc.org/github.com/dimchansky/utfbom?status.png)](https://godoc.org/github.com/dimchansky/utfbom) [![License](https://img.shields.io/:license-apache-blue.svg)](https://opensource.org/licenses/Apache-2.0) [![Build Status](https://travis-ci.org/dimchansky/utfbom.svg?branch=master)](https://travis-ci.org/dimchansky/utfbom) [![Go Report Card](https://goreportcard.com/badge/github.com/dimchansky/utfbom)](https://goreportcard.com/report/github.com/dimchansky/utfbom) [![Coverage Status](https://coveralls.io/repos/github/dimchansky/utfbom/badge.svg?branch=master)](https://coveralls.io/github/dimchansky/utfbom?branch=master)
+# utfbom [![Godoc](https://godoc.org/github.com/dimchansky/utfbom?status.png)](https://godoc.org/github.com/dimchansky/utfbom) [![License](https://img.shields.io/:license-apache-blue.svg)](https://opensource.org/licenses/Apache-2.0) [![CI](https://github.com/dimchansky/utfbom/actions/workflows/ci.yml/badge.svg?branch=master)](https://github.com/dimchansky/utfbom/actions/workflows/ci.yml) [![Go Report Card](https://goreportcard.com/badge/github.com/dimchansky/utfbom)](https://goreportcard.com/report/github.com/dimchansky/utfbom) [![Coverage Status](https://coveralls.io/repos/github/dimchansky/utfbom/badge.svg?branch=master)](https://coveralls.io/github/dimchansky/utfbom?branch=master)
 
 The package utfbom implements the detection of the BOM (Unicode Byte Order Mark) and removing as necessary. It can also return the encoding detected by the BOM.