| /* |
| Licensed to the Apache Software Foundation (ASF) under one or more |
| contributor license agreements. See the NOTICE file distributed with |
| this work for additional information regarding copyright ownership. |
| The ASF licenses this file to You 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 util |
| |
| import ( |
| "bytes" |
| "encoding/xml" |
| "fmt" |
| "io" |
| "os" |
| "path" |
| "regexp" |
| "sort" |
| |
| "github.com/pkg/errors" |
| |
| "github.com/scylladb/go-set/strset" |
| ) |
| |
| // StringSliceJoin -- |
| func StringSliceJoin(slices ...[]string) []string { |
| size := 0 |
| |
| for _, s := range slices { |
| size += len(s) |
| } |
| |
| result := make([]string, 0, size) |
| |
| for _, s := range slices { |
| result = append(result, s...) |
| } |
| |
| return result |
| } |
| |
| // StringSliceContains -- |
| func StringSliceContains(slice []string, items []string) bool { |
| for i := 0; i < len(items); i++ { |
| if !StringSliceExists(slice, items[i]) { |
| return false |
| } |
| } |
| |
| return true |
| } |
| |
| // StringSliceExists -- |
| func StringSliceExists(slice []string, item string) bool { |
| for i := 0; i < len(slice); i++ { |
| if slice[i] == item { |
| return true |
| } |
| } |
| |
| return false |
| } |
| |
| // StringSliceUniqueAdd append the given item if not already present in the slice |
| func StringSliceUniqueAdd(slice *[]string, item string) bool { |
| if slice == nil { |
| newSlice := make([]string, 0) |
| slice = &newSlice |
| } |
| for _, i := range *slice { |
| if i == item { |
| return false |
| } |
| } |
| |
| *slice = append(*slice, item) |
| |
| return true |
| } |
| |
| // StringSliceUniqueConcat append all the items of the "items" slice if they are not already present in the slice |
| func StringSliceUniqueConcat(slice *[]string, items []string) bool { |
| changed := false |
| for _, item := range items { |
| if StringSliceUniqueAdd(slice, item) { |
| changed = true |
| } |
| } |
| return changed |
| } |
| |
| // EncodeXML -- |
| func EncodeXML(content interface{}) ([]byte, error) { |
| w := &bytes.Buffer{} |
| w.WriteString(xml.Header) |
| |
| e := xml.NewEncoder(w) |
| e.Indent("", " ") |
| |
| err := e.Encode(content) |
| if err != nil { |
| return []byte{}, err |
| } |
| |
| return w.Bytes(), nil |
| } |
| |
| // CopyFile -- |
| func CopyFile(src, dst string) (int64, error) { |
| sourceFileStat, err := os.Stat(src) |
| if err != nil { |
| return 0, err |
| } |
| |
| if !sourceFileStat.Mode().IsRegular() { |
| return 0, fmt.Errorf("%s is not a regular file", src) |
| } |
| |
| source, err := os.Open(src) |
| if err != nil { |
| return 0, err |
| } |
| defer source.Close() |
| |
| err = os.MkdirAll(path.Dir(dst), 0777) |
| if err != nil { |
| return 0, err |
| } |
| |
| destination, err := os.Create(dst) |
| if err != nil { |
| return 0, err |
| } |
| defer destination.Close() |
| nBytes, err := io.Copy(destination, source) |
| return nBytes, err |
| } |
| |
| // WriteFileWithContent -- |
| func WriteFileWithContent(buildDir string, relativePath string, content []byte) error { |
| filePath := path.Join(buildDir, relativePath) |
| fileDir := path.Dir(filePath) |
| // Create dir if not present |
| err := os.MkdirAll(fileDir, 0777) |
| if err != nil { |
| return errors.Wrap(err, "could not create dir for file "+relativePath) |
| } |
| // Create file |
| file, err := os.Create(filePath) |
| if err != nil { |
| return errors.Wrap(err, "could not create file "+relativePath) |
| } |
| defer file.Close() |
| |
| _, err = file.Write(content) |
| if err != nil { |
| return errors.Wrap(err, "could not write to file "+relativePath) |
| } |
| return nil |
| } |
| |
| // WriteFileWithBytesMarshallerContent -- |
| func WriteFileWithBytesMarshallerContent(buildDir string, relativePath string, content BytesMarshaller) error { |
| data, err := content.MarshalBytes() |
| if err != nil { |
| return err |
| } |
| |
| return WriteFileWithContent(buildDir, relativePath, data) |
| } |
| |
| // FindAllDistinctStringSubmatch -- |
| func FindAllDistinctStringSubmatch(data string, regexps ...*regexp.Regexp) []string { |
| submatchs := strset.New() |
| |
| for _, reg := range regexps { |
| hits := reg.FindAllStringSubmatch(data, -1) |
| for _, hit := range hits { |
| if len(hit) > 1 { |
| for _, match := range hit[1:] { |
| submatchs.Add(match) |
| } |
| } |
| } |
| } |
| return submatchs.List() |
| } |
| |
| // FileExists -- |
| func FileExists(name string) (bool, error) { |
| info, err := os.Stat(name) |
| if os.IsNotExist(err) { |
| return false, nil |
| } |
| |
| return !info.IsDir(), err |
| } |
| |
| // BytesMarshaller -- |
| type BytesMarshaller interface { |
| MarshalBytes() ([]byte, error) |
| } |
| |
| // SortedStringMapKeys -- |
| func SortedStringMapKeys(m map[string]string) []string { |
| res := make([]string, len(m)) |
| i := 0 |
| for k := range m { |
| res[i] = k |
| i++ |
| } |
| sort.Strings(res) |
| return res |
| } |