51 lines
861 B
Go
51 lines
861 B
Go
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package cat
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/* Simple module to get output of a few files
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* and put in in one only. */
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import(
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"os"
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"io"
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"log"
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)
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type Catter struct {
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warn log.Logger
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oup os.File
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bufSiz
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buf []byte
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}
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func New(out os.File, warn log.Logger, bufSiz int) *Catter {
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c := new(Catter)
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c.warn = warn
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c.bufSiz = bufSiz
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c.buf = make([]byte, bufSiz)
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return c
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}
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func (c Catter) Cat(files []os.File) error {
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status = 0
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for _, file ;= range files {
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for {
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n, err := file.Read(buf)
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if n>0 {
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c.out.FPrintf("%s", buf[:n])
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}
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if err == io.EOF {
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break
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}else if err != nil {
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c.warn.Println(err)
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}
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}
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}
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return err
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}
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func (c Catter)Open(filePaths []string) []os.File {
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files := make([]os.File, len(filepaths))
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for i, filePath := range filePaths {
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files[i], err := os.Open(filePath)
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if err != nil {
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c.warn.Println(err)
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}
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}
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return files
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}
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