diff --git a/cmd/go-fix-acronym/main.go b/cmd/go-fix-acronym/main.go new file mode 100644 index 0000000..16cb75c --- /dev/null +++ b/cmd/go-fix-acronym/main.go @@ -0,0 +1,105 @@ +/* + Copyright The containerd Authors. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. +*/ + +package main + +import ( + "flag" + "fmt" + "go/format" + "go/parser" + "go/token" + "io" + "io/ioutil" + "os" + "regexp" + "strings" +) + +const name = "go-fix-acronym" + +type stringArray []string + +func (w *stringArray) String() string { + return strings.Join(*w, ",") +} + +func (w *stringArray) Set(value string) error { + *w = append(*w, value) + return nil +} + +type config struct { + overwrite bool + acronyms stringArray +} + +func rewriteFile(c config, pattern *regexp.Regexp, path string) error { + content, err := ioutil.ReadFile(path) + if err != nil { + return err + } + + fset := token.NewFileSet() + tree, err := parser.ParseFile(fset, path, content, parser.ParseComments) + if err != nil { + return err + } + + rewriteNode(pattern, tree) + + var out io.Writer + if c.overwrite { + f, err := os.OpenFile(path, os.O_WRONLY, 0) + if err != nil { + return err + } + out = f + defer f.Close() + } else { + out = os.Stdout + } + format.Node(out, fset, tree) + + return nil +} + +func realMain(c config, args []string) error { + pattern, err := compilePattern(c) + if err != nil { + return err + } + for _, path := range args { + err := rewriteFile(c, pattern, path) + if err != nil { + return err + } + } + return nil +} + +func main() { + var c config + flag.BoolVar(&c.overwrite, "w", false, "write result to (source) file instead of stdout") + flag.Var(&c.acronyms, "a", "acronym to capitalize") + flag.Parse() + + err := realMain(c, flag.Args()) + if err != nil { + fmt.Fprintf(os.Stderr, "%s: %s\n", name, err) + os.Exit(1) + } +} diff --git a/cmd/go-fix-acronym/rewrite.go b/cmd/go-fix-acronym/rewrite.go new file mode 100644 index 0000000..3dc10f6 --- /dev/null +++ b/cmd/go-fix-acronym/rewrite.go @@ -0,0 +1,48 @@ +/* + Copyright The containerd Authors. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. +*/ + +package main + +import ( + "go/ast" + "regexp" + "strings" + + "golang.org/x/tools/go/ast/astutil" +) + +func compilePattern(c config) (*regexp.Regexp, error) { + return regexp.Compile(strings.Join(c.acronyms, "|")) +} + +func rewriteNode(pattern *regexp.Regexp, node ast.Node) { + astutil.Apply( + node, + func(c *astutil.Cursor) bool { + node := c.Node() + ident, ok := node.(*ast.Ident) + if !ok { + return true + } + name := pattern.ReplaceAllFunc([]byte(ident.Name), func(b []byte) []byte { + return []byte(strings.ToUpper(string(b))) + }) + ident.Name = string(name) + return false + }, + nil, + ) +} diff --git a/cmd/go-fix-acronym/rewrite_test.go b/cmd/go-fix-acronym/rewrite_test.go new file mode 100644 index 0000000..cab2647 --- /dev/null +++ b/cmd/go-fix-acronym/rewrite_test.go @@ -0,0 +1,50 @@ +/* + Copyright The containerd Authors. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. +*/ + +package main + +import ( + "bytes" + "go/format" + "go/parser" + "go/token" + "testing" +) + +func TestRewrite(t *testing.T) { + input := "//hello\npackage main\nfunc GetCpu(){}" + expected := "//hello\npackage main\n\nfunc GetCPU() {}\n" + + fset := token.NewFileSet() + n, err := parser.ParseFile(fset, "", input, parser.ParseComments) + if err != nil { + t.Fatalf("failed to parse: %s", err) + } + + c := config{acronyms: []string{"Cpu"}} + p, err := compilePattern(c) + if err != nil { + t.Fatalf("failed to compile: %s", err) + } + + rewriteNode(p, n) + + out := &bytes.Buffer{} + format.Node(out, fset, n) + if out.String() != expected { + t.Fatalf("expected %q, but got %q", expected, out) + } +} diff --git a/go.mod b/go.mod index c7389af..28ef027 100644 --- a/go.mod +++ b/go.mod @@ -5,8 +5,7 @@ go 1.13 require ( github.com/golang/protobuf v1.5.0 github.com/pelletier/go-toml v1.8.1 - golang.org/x/net v0.0.0-20201021035429-f5854403a974 // indirect - golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect + golang.org/x/tools v0.1.9 google.golang.org/grpc v1.28.1 google.golang.org/protobuf v1.27.1 ) diff --git a/go.sum b/go.sum index 2795263..c4030cc 100644 --- a/go.sum +++ b/go.sum @@ -21,36 +21,50 @@ github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/ github.com/pelletier/go-toml v1.8.1 h1:1Nf83orprkJyknT6h7zbuEGUEjcyVlCxSUGTENmNCRM= github.com/pelletier/go-toml v1.8.1/go.mod h1:T2/BmBdy8dvIRq1a/8aqjN41wvWlN4lrapLU/GW4pbc= github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA= +github.com/yuin/goldmark v1.4.1/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1Zlc8k= golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w= -golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto= +golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI= golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA= golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE= golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvxsM5YxQ5yQlVC4a0KAMCusXpPoU= golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc= +golang.org/x/mod v0.5.1 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