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utils.go
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utils.go
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package yqlib
import (
"bufio"
"container/list"
"errors"
"fmt"
"io"
"os"
)
func readStream(filename string) (io.Reader, error) {
var reader *bufio.Reader
if filename == "-" {
reader = bufio.NewReader(os.Stdin)
} else {
// ignore CWE-22 gosec issue - that's more targeted for http based apps that run in a public directory,
// and ensuring that it's not possible to give a path to a file outside that directory.
file, err := os.Open(filename) // #nosec
if err != nil {
return nil, err
}
reader = bufio.NewReader(file)
}
return reader, nil
}
func writeString(writer io.Writer, txt string) error {
_, errorWriting := writer.Write([]byte(txt))
return errorWriting
}
func ReadDocuments(reader io.Reader, decoder Decoder) (*list.List, error) {
return readDocuments(reader, "", 0, decoder)
}
func readDocuments(reader io.Reader, filename string, fileIndex int, decoder Decoder) (*list.List, error) {
err := decoder.Init(reader)
if err != nil {
return nil, err
}
inputList := list.New()
var currentIndex uint
for {
candidateNode, errorReading := decoder.Decode()
if errors.Is(errorReading, io.EOF) {
switch reader := reader.(type) {
case *os.File:
safelyCloseFile(reader)
}
return inputList, nil
} else if errorReading != nil {
return nil, fmt.Errorf("bad file '%v': %w", filename, errorReading)
}
candidateNode.document = currentIndex
candidateNode.filename = filename
candidateNode.fileIndex = fileIndex
candidateNode.EvaluateTogether = true
inputList.PushBack(candidateNode)
currentIndex = currentIndex + 1
}
}