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81 lines
2.1 KiB
Go
81 lines
2.1 KiB
Go
/*
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Copyright 2016 The Kubernetes Authors All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package codeinspector
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import (
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"fmt"
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"go/ast"
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"go/parser"
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"go/token"
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"io/ioutil"
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"strings"
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"unicode"
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)
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// GetPublicFunctions lists all public functions (not methods) from a golang source file.
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func GetPublicFunctions(filePath string) ([]string, error) {
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var functionNames []string
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// Create the AST by parsing src.
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fset := token.NewFileSet() // positions are relative to fset
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f, err := parser.ParseFile(fset, filePath, nil, 0)
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if err != nil {
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return nil, fmt.Errorf("failed parse file to list functions: %v", err)
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}
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// Inspect the AST and print all identifiers and literals.
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ast.Inspect(f, func(n ast.Node) bool {
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var s string
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switch x := n.(type) {
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case *ast.FuncDecl:
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s = x.Name.Name
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// It's a function (not method), and is public, record it.
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if x.Recv == nil && isPublic(s) {
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functionNames = append(functionNames, s)
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}
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}
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return true
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})
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return functionNames, nil
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}
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// isPublic checks if a given string is a public function name.
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func isPublic(myString string) bool {
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a := []rune(myString)
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a[0] = unicode.ToUpper(a[0])
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return myString == string(a)
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}
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// GetSourceCodeFiles lists golang source code files from directory, excluding sub-directory and tests files.
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func GetSourceCodeFiles(dir string) ([]string, error) {
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files, err := ioutil.ReadDir(dir)
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if err != nil {
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return nil, err
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}
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var filenames []string
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for _, file := range files {
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if strings.HasSuffix(file.Name(), ".go") && !strings.HasSuffix(file.Name(), "_test.go") {
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filenames = append(filenames, file.Name())
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}
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}
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return filenames, nil
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}
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