153 lines
3.2 KiB
Go
153 lines
3.2 KiB
Go
//
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// Copyright (c) 2019 Björn Kalkbrenner <terminar@cyberphoria.org>
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//
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// Permission to use, copy, modify, and distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice appear in all copies.
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//
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// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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//
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package main
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import (
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"os"
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"bufio"
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"path"
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"time"
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"strconv"
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"errors"
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)
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var archiveStoragePath = ""
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var archiveStorageFlat = false
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type archiveStorage struct {
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dataFile *os.File
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data *bufio.Writer
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metaFile *os.File
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meta *bufio.Writer
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}
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func careDirectory(dirName string) error {
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src, err := os.Stat(dirName)
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if os.IsNotExist(err) {
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errDir := os.MkdirAll(dirName, 0755)
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if errDir != nil {
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return errDir
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}
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return nil
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}
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if src.Mode().IsRegular() {
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return errors.New("already exist as a file!")
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}
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return nil
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}
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func getArchiveFolder() (string, error) {
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if archiveStoragePath == "" {
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return "", errors.New("archive storage path not set")
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}
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if archiveStorageFlat {
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return archiveStoragePath, nil
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} else {
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return path.Join(archiveStoragePath,time.Now().Format("2006-01"),time.Now().Format("02")), nil
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}
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}
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func (a *archiveStorage) Open(fname string) error {
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var err error
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var t = time.Now()
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var fFolder string
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if fFolder, err = getArchiveFolder(); err != nil {
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return err
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}
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fName := fname + "." + strconv.FormatInt(t.Unix(), 10)
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if err := careDirectory(fFolder); err != nil {
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return err
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}
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fPath := path.Join(fFolder,fName)
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if a.dataFile, err = os.Create(fPath); err != nil {
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return err
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}
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a.data = bufio.NewWriter(a.dataFile)
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if a.metaFile, err = os.Create(fPath + ".meta"); err != nil {
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return err
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}
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a.meta = bufio.NewWriter(a.metaFile)
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a.Meta("DATAFILE=" + fName)
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a.Meta("TIME=" + t.String())
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return nil
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}
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func (a *archiveStorage) Close() error {
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if a.data != nil {
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if err := a.data.Flush(); err != nil {
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return err
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}
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}
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if a.dataFile != nil {
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if err := a.dataFile.Close(); err != nil {
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return err
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}
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}
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if a.meta != nil {
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if err := a.meta.Flush(); err != nil {
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return err
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}
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}
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if a.metaFile != nil {
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if err := a.metaFile.Close(); err != nil {
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return err
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}
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}
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return nil
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}
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func (a *archiveStorage) Data(text string) {
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if a.data != nil {
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a.data.WriteString(text + "\n")
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}
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}
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func (a *archiveStorage) Meta(text string) {
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if a.meta != nil {
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a.meta.WriteString(text + "\n")
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}
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}
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func (a *archiveStorage) Flush() error {
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if a.data != nil {
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if err := a.data.Flush(); err != nil {
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return err
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}
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}
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if a.meta != nil {
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if err := a.meta.Flush(); err != nil {
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return err
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}
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}
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return nil
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}
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