refactor: add more linters and fix findings

.drone.yml

@@ -8,23 +8,23 @@ platform:
 
 steps:
   - name: deps
-    image: golang:1.19
+    image: golang:1.20
     commands:
       - make deps
     volumes:
       - name: godeps
         path: /go
 
   - name: lint
-    image: golang:1.19
+    image: golang:1.20
     commands:
       - make lint
     volumes:
       - name: godeps
         path: /go
 
   - name: test
-    image: golang:1.19
+    image: golang:1.20
     commands:
       - make test
     volumes:
@@ -51,7 +51,7 @@ platform:
 
 steps:
   - name: build
-    image: techknowlogick/xgo:go-1.19.x
+    image: techknowlogick/xgo:go-1.20.x
     commands:
       - ln -s /drone/src /source
       - make release
@@ -292,6 +292,6 @@ depends_on:
 
 ---
 kind: signature
-hmac: 8b920283ba7cc82bad64ea0eb55b8cf3de5aae95ca0f7018bac9f0deb8b22244
+hmac: 89039f09e352a636edf52307e5e48f8bd54f4d9f0b2cf55dabddfdca88702bda
 
 ...

.golangci.yml

@@ -1,25 +1,92 @@
 linters:
+  enable-all: false
+  disable-all: true
   enable:
+    - errcheck
     - gosimple
-    - deadcode
-    - typecheck
     - govet
-    - errcheck
+    - ineffassign
     - staticcheck
+    - typecheck
     - unused
-    - structcheck
-    - varcheck
+    - asasalint
+    - asciicheck
+    - bidichk
+    - bodyclose
+    - containedctx
+    - contextcheck
+    - decorder
+    - depguard
+    - dogsled
     - dupl
+    - dupword
+    - durationcheck
+    - errchkjson
+    - errname
+    - errorlint
+    - execinquery
+    - exhaustive
+    - exportloopref
+    - forcetypeassert
+    - ginkgolinter
+    - gocheckcompilerdirectives
+    - gochecknoglobals
+    - gochecknoinits
+    - gocognit
+    - goconst
+    - gocritic
+    - gocyclo
+    - godot
+    - godox
+    - goerr113
     - gofmt
+    - gofumpt
+    - goheader
+    - goimports
+    - gomnd
+    - gomoddirectives
+    - gomodguard
+    - goprintffuncname
+    - gosec
+    - grouper
+    - importas
+    - interfacebloat
+    - ireturn
+    - lll
+    - loggercheck
+    - maintidx
+    - makezero
     - misspell
-    - gocritic
-    - bidichk
-    - ineffassign
+    - musttag
+    - nakedret
+    - nestif
+    - nilerr
+    - nilnil
+    - nlreturn
+    - noctx
+    - nolintlint
+    - nonamedreturns
+    - nosprintfhostport
+    - prealloc
+    - predeclared
+    - promlinter
+    - reassign
     - revive
-    - gofumpt
-    - depguard
-  enable-all: false
-  disable-all: true
+    # - rowserrcheck
+    # - sqlclosecheck
+    # - structcheck
+    - stylecheck
+    - tagliatelle
+    - tenv
+    - testableexamples
+    - thelper
+    - tparallel
+    - unconvert
+    - unparam
+    - usestdlibvars
+    # - wastedassign
+    - whitespace
+    - wsl
   fast: false
 
 run:
@@ -28,4 +95,4 @@ run:
 linters-settings:
   gofumpt:
     extra-rules: true
-    lang-version: "1.18"
+    lang-version: "1.20"

Makefile

@@ -19,7 +19,7 @@ GOLANGCI_LINT_PACKAGE ?= github.com/golangci/golangci-lint/cmd/golangci-lint@$(G
 XGO_PACKAGE ?= src.techknowlogick.com/xgo@latest
 
 GENERATE ?=
-XGO_VERSION := go-1.19.x
+XGO_VERSION := go-1.20.x
 XGO_TARGETS ?= linux/amd64,linux/arm-6,linux/arm-7,linux/arm64
 
 TARGETOS ?= linux

cmd/drone-git-action/config.go

@@ -10,7 +10,7 @@ func settingsFlags(settings *plugin.Settings, category string) []cli.Flag {
 	return []cli.Flag{
 		&cli.StringSliceFlag{
 			Name:        "action",
-			Usage:       "git action to to execute",
+			Usage:       "git action to execute",
 			EnvVars:     []string{"PLUGIN_ACTION"},
 			Destination: &settings.Action,
 			Required:    true,

cmd/drone-git-action/main.go

@@ -11,6 +11,7 @@ import (
 	"github.com/urfave/cli/v2"
 )
 
+//nolint:gochecknoglobals
 var (
 	BuildVersion = "devel"
 	BuildDate    = "00000000"

git/clone.go

@@ -3,16 +3,21 @@ package git
 import (
 	"fmt"
 	"os"
-	"os/exec"
+
+	"golang.org/x/sys/execabs"
 )
 
 // FetchSource fetches the source from remote.
-func FetchSource(repo Repository) *exec.Cmd {
-	cmd := exec.Command(
-		"git",
+func FetchSource(repo Repository) *execabs.Cmd {
+	args := []string{
 		"fetch",
 		"origin",
 		fmt.Sprintf("+%s:", repo.Branch),
+	}
+
+	cmd := execabs.Command(
+		gitBin,
+		args...,
 	)
 	cmd.Dir = repo.WorkDir
 	cmd.Stderr = os.Stderr
@@ -21,12 +26,16 @@ func FetchSource(repo Repository) *exec.Cmd {
 }
 
 // CheckoutHead handles branch checkout.
-func CheckoutHead(repo Repository) *exec.Cmd {
-	cmd := exec.Command(
-		"git",
+func CheckoutHead(repo Repository) *execabs.Cmd {
+	args := []string{
 		"checkout",
 		"-qf",
 		repo.Branch,
+	}
+
+	cmd := execabs.Command(
+		gitBin,
+		args...,
 	)
 	cmd.Dir = repo.WorkDir
 	cmd.Stderr = os.Stderr

git/commit.go

@@ -2,13 +2,14 @@ package git
 
 import (
 	"os"
-	"os/exec"
+
+	"golang.org/x/sys/execabs"
 )
 
 // ForceAdd forces the addition of all dirty files.
-func ForceAdd(repo Repository) *exec.Cmd {
-	cmd := exec.Command(
-		"git",
+func ForceAdd(repo Repository) *execabs.Cmd {
+	cmd := execabs.Command(
+		gitBin,
 		"add",
 		"--all",
 		"--force",
@@ -20,9 +21,9 @@ func ForceAdd(repo Repository) *exec.Cmd {
 }
 
 // Add updates the index to match the working tree.
-func Add(repo Repository) *exec.Cmd {
-	cmd := exec.Command(
-		"git",
+func Add(repo Repository) *execabs.Cmd {
+	cmd := execabs.Command(
+		gitBin,
 		"add",
 	)
 	cmd.Dir = repo.WorkDir
@@ -37,10 +38,10 @@ func Add(repo Repository) *exec.Cmd {
 	return cmd
 }
 
-// TestCleanTree returns non-zero if diff between index and local repository
-func TestCleanTree(repo Repository) *exec.Cmd {
-	cmd := exec.Command(
-		"git",
+// TestCleanTree returns non-zero if diff between index and local repository.
+func TestCleanTree(repo Repository) *execabs.Cmd {
+	cmd := execabs.Command(
+		gitBin,
 		"diff-index",
 		"--quiet",
 		"HEAD",
@@ -52,14 +53,18 @@ func TestCleanTree(repo Repository) *exec.Cmd {
 	return cmd
 }
 
-// EmptyCommit simply create an empty commit
-func EmptyCommit(repo Repository) *exec.Cmd {
-	cmd := exec.Command(
-		"git",
+// EmptyCommit simply create an empty commit.
+func EmptyCommit(repo Repository) *execabs.Cmd {
+	args := []string{
 		"commit",
 		"--allow-empty",
 		"-m",
 		repo.CommitMsg,
+	}
+
+	cmd := execabs.Command(
+		gitBin,
+		args...,
 	)
 	cmd.Dir = repo.WorkDir
 	cmd.Stderr = os.Stderr
@@ -72,12 +77,16 @@ func EmptyCommit(repo Repository) *exec.Cmd {
 }
 
 // ForceCommit commits every change while skipping CI.
-func ForceCommit(repo Repository) *exec.Cmd {
-	cmd := exec.Command(
-		"git",
+func ForceCommit(repo Repository) *execabs.Cmd {
+	args := []string{
 		"commit",
 		"-m",
 		repo.CommitMsg,
+	}
+
+	cmd := execabs.Command(
+		gitBin,
+		args...,
 	)
 	cmd.Dir = repo.WorkDir
 	cmd.Stderr = os.Stderr