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| 1 | +// Copyright 2020 The Gitea Authors. All rights reserved. |
| 2 | +// Copyright (c) 2018 Minko Gechev. All rights reserved. |
| 3 | +// Use of this source code is governed by a MIT-style |
| 4 | +// license that can be found in the LICENSE file. |
| 5 | + |
| 6 | +// +build ignore |
| 7 | + |
| 8 | +package main |
| 9 | + |
| 10 | +import ( |
| 11 | + "flag" |
| 12 | + "fmt" |
| 13 | + "io/ioutil" |
| 14 | + "os" |
| 15 | + "path/filepath" |
| 16 | + "strings" |
| 17 | + |
| 18 | + "github.com/BurntSushi/toml" |
| 19 | + "github.com/mgechev/dots" |
| 20 | + "github.com/mgechev/revive/formatter" |
| 21 | + "github.com/mgechev/revive/lint" |
| 22 | + "github.com/mgechev/revive/rule" |
| 23 | + "github.com/mitchellh/go-homedir" |
| 24 | +) |
| 25 | + |
| 26 | +func fail(err string) { |
| 27 | + fmt.Fprintln(os.Stderr, err) |
| 28 | + os.Exit(1) |
| 29 | +} |
| 30 | + |
| 31 | +var defaultRules = []lint.Rule{ |
| 32 | + &rule.VarDeclarationsRule{}, |
| 33 | + &rule.PackageCommentsRule{}, |
| 34 | + &rule.DotImportsRule{}, |
| 35 | + &rule.BlankImportsRule{}, |
| 36 | + &rule.ExportedRule{}, |
| 37 | + &rule.VarNamingRule{}, |
| 38 | + &rule.IndentErrorFlowRule{}, |
| 39 | + &rule.IfReturnRule{}, |
| 40 | + &rule.RangeRule{}, |
| 41 | + &rule.ErrorfRule{}, |
| 42 | + &rule.ErrorNamingRule{}, |
| 43 | + &rule.ErrorStringsRule{}, |
| 44 | + &rule.ReceiverNamingRule{}, |
| 45 | + &rule.IncrementDecrementRule{}, |
| 46 | + &rule.ErrorReturnRule{}, |
| 47 | + &rule.UnexportedReturnRule{}, |
| 48 | + &rule.TimeNamingRule{}, |
| 49 | + &rule.ContextKeysType{}, |
| 50 | + &rule.ContextAsArgumentRule{}, |
| 51 | +} |
| 52 | + |
| 53 | +var allRules = append([]lint.Rule{ |
| 54 | + &rule.ArgumentsLimitRule{}, |
| 55 | + &rule.CyclomaticRule{}, |
| 56 | + &rule.FileHeaderRule{}, |
| 57 | + &rule.EmptyBlockRule{}, |
| 58 | + &rule.SuperfluousElseRule{}, |
| 59 | + &rule.ConfusingNamingRule{}, |
| 60 | + &rule.GetReturnRule{}, |
| 61 | + &rule.ModifiesParamRule{}, |
| 62 | + &rule.ConfusingResultsRule{}, |
| 63 | + &rule.DeepExitRule{}, |
| 64 | + &rule.UnusedParamRule{}, |
| 65 | + &rule.UnreachableCodeRule{}, |
| 66 | + &rule.AddConstantRule{}, |
| 67 | + &rule.FlagParamRule{}, |
| 68 | + &rule.UnnecessaryStmtRule{}, |
| 69 | + &rule.StructTagRule{}, |
| 70 | + &rule.ModifiesValRecRule{}, |
| 71 | + &rule.ConstantLogicalExprRule{}, |
| 72 | + &rule.BoolLiteralRule{}, |
| 73 | + &rule.RedefinesBuiltinIDRule{}, |
| 74 | + &rule.ImportsBlacklistRule{}, |
| 75 | + &rule.FunctionResultsLimitRule{}, |
| 76 | + &rule.MaxPublicStructsRule{}, |
| 77 | + &rule.RangeValInClosureRule{}, |
| 78 | + &rule.RangeValAddress{}, |
| 79 | + &rule.WaitGroupByValueRule{}, |
| 80 | + &rule.AtomicRule{}, |
| 81 | + &rule.EmptyLinesRule{}, |
| 82 | + &rule.LineLengthLimitRule{}, |
| 83 | + &rule.CallToGCRule{}, |
| 84 | + &rule.DuplicatedImportsRule{}, |
| 85 | + &rule.ImportShadowingRule{}, |
| 86 | + &rule.BareReturnRule{}, |
| 87 | + &rule.UnusedReceiverRule{}, |
| 88 | + &rule.UnhandledErrorRule{}, |
| 89 | + &rule.CognitiveComplexityRule{}, |
| 90 | + &rule.StringOfIntRule{}, |
| 91 | +}, defaultRules...) |
| 92 | + |
| 93 | +var allFormatters = []lint.Formatter{ |
| 94 | + &formatter.Stylish{}, |
| 95 | + &formatter.Friendly{}, |
| 96 | + &formatter.JSON{}, |
| 97 | + &formatter.NDJSON{}, |
| 98 | + &formatter.Default{}, |
| 99 | + &formatter.Unix{}, |
| 100 | + &formatter.Checkstyle{}, |
| 101 | + &formatter.Plain{}, |
| 102 | +} |
| 103 | + |
| 104 | +func getFormatters() map[string]lint.Formatter { |
| 105 | + result := map[string]lint.Formatter{} |
| 106 | + for _, f := range allFormatters { |
| 107 | + result[f.Name()] = f |
| 108 | + } |
| 109 | + return result |
| 110 | +} |
| 111 | + |
| 112 | +func getLintingRules(config *lint.Config) []lint.Rule { |
| 113 | + rulesMap := map[string]lint.Rule{} |
| 114 | + for _, r := range allRules { |
| 115 | + rulesMap[r.Name()] = r |
| 116 | + } |
| 117 | + |
| 118 | + lintingRules := []lint.Rule{} |
| 119 | + for name := range config.Rules { |
| 120 | + rule, ok := rulesMap[name] |
| 121 | + if !ok { |
| 122 | + fail("cannot find rule: " + name) |
| 123 | + } |
| 124 | + lintingRules = append(lintingRules, rule) |
| 125 | + } |
| 126 | + |
| 127 | + return lintingRules |
| 128 | +} |
| 129 | + |
| 130 | +func parseConfig(path string) *lint.Config { |
| 131 | + config := &lint.Config{} |
| 132 | + file, err := ioutil.ReadFile(path) |
| 133 | + if err != nil { |
| 134 | + fail("cannot read the config file") |
| 135 | + } |
| 136 | + _, err = toml.Decode(string(file), config) |
| 137 | + if err != nil { |
| 138 | + fail("cannot parse the config file: " + err.Error()) |
| 139 | + } |
| 140 | + return config |
| 141 | +} |
| 142 | + |
| 143 | +func normalizeConfig(config *lint.Config) { |
| 144 | + if config.Confidence == 0 { |
| 145 | + config.Confidence = 0.8 |
| 146 | + } |
| 147 | + severity := config.Severity |
| 148 | + if severity != "" { |
| 149 | + for k, v := range config.Rules { |
| 150 | + if v.Severity == "" { |
| 151 | + v.Severity = severity |
| 152 | + } |
| 153 | + config.Rules[k] = v |
| 154 | + } |
| 155 | + for k, v := range config.Directives { |
| 156 | + if v.Severity == "" { |
| 157 | + v.Severity = severity |
| 158 | + } |
| 159 | + config.Directives[k] = v |
| 160 | + } |
| 161 | + } |
| 162 | +} |
| 163 | + |
| 164 | +func getConfig() *lint.Config { |
| 165 | + config := defaultConfig() |
| 166 | + if configPath != "" { |
| 167 | + config = parseConfig(configPath) |
| 168 | + } |
| 169 | + normalizeConfig(config) |
| 170 | + return config |
| 171 | +} |
| 172 | + |
| 173 | +func getFormatter() lint.Formatter { |
| 174 | + formatters := getFormatters() |
| 175 | + formatter := formatters["default"] |
| 176 | + if formatterName != "" { |
| 177 | + f, ok := formatters[formatterName] |
| 178 | + if !ok { |
| 179 | + fail("unknown formatter " + formatterName) |
| 180 | + } |
| 181 | + formatter = f |
| 182 | + } |
| 183 | + return formatter |
| 184 | +} |
| 185 | + |
| 186 | +func buildDefaultConfigPath() string { |
| 187 | + var result string |
| 188 | + if homeDir, err := homedir.Dir(); err == nil { |
| 189 | + result = filepath.Join(homeDir, "revive.toml") |
| 190 | + if _, err := os.Stat(result); err != nil { |
| 191 | + result = "" |
| 192 | + } |
| 193 | + } |
| 194 | + |
| 195 | + return result |
| 196 | +} |
| 197 | + |
| 198 | +func defaultConfig() *lint.Config { |
| 199 | + defaultConfig := lint.Config{ |
| 200 | + Confidence: 0.0, |
| 201 | + Severity: lint.SeverityWarning, |
| 202 | + Rules: map[string]lint.RuleConfig{}, |
| 203 | + } |
| 204 | + for _, r := range defaultRules { |
| 205 | + defaultConfig.Rules[r.Name()] = lint.RuleConfig{} |
| 206 | + } |
| 207 | + return &defaultConfig |
| 208 | +} |
| 209 | + |
| 210 | +func normalizeSplit(strs []string) []string { |
| 211 | + res := []string{} |
| 212 | + for _, s := range strs { |
| 213 | + t := strings.Trim(s, " \t") |
| 214 | + if len(t) > 0 { |
| 215 | + res = append(res, t) |
| 216 | + } |
| 217 | + } |
| 218 | + return res |
| 219 | +} |
| 220 | + |
| 221 | +func getPackages() [][]string { |
| 222 | + globs := normalizeSplit(flag.Args()) |
| 223 | + if len(globs) == 0 { |
| 224 | + globs = append(globs, ".") |
| 225 | + } |
| 226 | + |
| 227 | + packages, err := dots.ResolvePackages(globs, normalizeSplit(excludePaths)) |
| 228 | + if err != nil { |
| 229 | + fail(err.Error()) |
| 230 | + } |
| 231 | + |
| 232 | + return packages |
| 233 | +} |
| 234 | + |
| 235 | +type arrayFlags []string |
| 236 | + |
| 237 | +func (i *arrayFlags) String() string { |
| 238 | + return strings.Join([]string(*i), " ") |
| 239 | +} |
| 240 | + |
| 241 | +func (i *arrayFlags) Set(value string) error { |
| 242 | + *i = append(*i, value) |
| 243 | + return nil |
| 244 | +} |
| 245 | + |
| 246 | +var configPath string |
| 247 | +var excludePaths arrayFlags |
| 248 | +var formatterName string |
| 249 | +var help bool |
| 250 | + |
| 251 | +var originalUsage = flag.Usage |
| 252 | + |
| 253 | +func init() { |
| 254 | + flag.Usage = func() { |
| 255 | + originalUsage() |
| 256 | + } |
| 257 | + // command line help strings |
| 258 | + const ( |
| 259 | + configUsage = "path to the configuration TOML file, defaults to $HOME/revive.toml, if present (i.e. -config myconf.toml)" |
| 260 | + excludeUsage = "list of globs which specify files to be excluded (i.e. -exclude foo/...)" |
| 261 | + formatterUsage = "formatter to be used for the output (i.e. -formatter stylish)" |
| 262 | + ) |
| 263 | + |
| 264 | + defaultConfigPath := buildDefaultConfigPath() |
| 265 | + |
| 266 | + flag.StringVar(&configPath, "config", defaultConfigPath, configUsage) |
| 267 | + flag.Var(&excludePaths, "exclude", excludeUsage) |
| 268 | + flag.StringVar(&formatterName, "formatter", "", formatterUsage) |
| 269 | + flag.Parse() |
| 270 | +} |
| 271 | + |
| 272 | +func main() { |
| 273 | + config := getConfig() |
| 274 | + formatter := getFormatter() |
| 275 | + packages := getPackages() |
| 276 | + |
| 277 | + revive := lint.New(func(file string) ([]byte, error) { |
| 278 | + return ioutil.ReadFile(file) |
| 279 | + }) |
| 280 | + |
| 281 | + lintingRules := getLintingRules(config) |
| 282 | + |
| 283 | + failures, err := revive.Lint(packages, lintingRules, *config) |
| 284 | + if err != nil { |
| 285 | + fail(err.Error()) |
| 286 | + } |
| 287 | + |
| 288 | + formatChan := make(chan lint.Failure) |
| 289 | + exitChan := make(chan bool) |
| 290 | + |
| 291 | + var output string |
| 292 | + go (func() { |
| 293 | + output, err = formatter.Format(formatChan, *config) |
| 294 | + if err != nil { |
| 295 | + fail(err.Error()) |
| 296 | + } |
| 297 | + exitChan <- true |
| 298 | + })() |
| 299 | + |
| 300 | + exitCode := 0 |
| 301 | + for f := range failures { |
| 302 | + if f.Confidence < config.Confidence { |
| 303 | + continue |
| 304 | + } |
| 305 | + if exitCode == 0 { |
| 306 | + exitCode = config.WarningCode |
| 307 | + } |
| 308 | + if c, ok := config.Rules[f.RuleName]; ok && c.Severity == lint.SeverityError { |
| 309 | + exitCode = config.ErrorCode |
| 310 | + } |
| 311 | + if c, ok := config.Directives[f.RuleName]; ok && c.Severity == lint.SeverityError { |
| 312 | + exitCode = config.ErrorCode |
| 313 | + } |
| 314 | + |
| 315 | + formatChan <- f |
| 316 | + } |
| 317 | + |
| 318 | + close(formatChan) |
| 319 | + <-exitChan |
| 320 | + if output != "" { |
| 321 | + fmt.Println(output) |
| 322 | + } |
| 323 | + |
| 324 | + os.Exit(exitCode) |
| 325 | +} |
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