136 lines
3.6 KiB
Go
136 lines
3.6 KiB
Go
package fic
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import (
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"bufio"
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"crypto/sha1"
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"encoding/hex"
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"errors"
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"io"
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"os"
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"path"
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"strings"
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)
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var FilesDir string
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var OptionalDigest bool
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type EFile struct {
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Id int64 `json:"id"`
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origin string
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Path string `json:"path"`
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IdExercice int64 `json:"idExercice"`
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Name string `json:"name"`
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Checksum []byte `json:"checksum"`
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Size int64 `json:"size"`
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}
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func GetFiles() ([]EFile, error) {
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if rows, err := DBQuery("SELECT id_file, id_exercice, origin, path, name, sha1, size FROM exercice_files"); err != nil {
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return nil, err
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} else {
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defer rows.Close()
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var files = make([]EFile, 0)
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for rows.Next() {
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var f EFile
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if err := rows.Scan(&f.Id, &f.IdExercice, &f.origin, &f.Path, &f.Name, &f.Checksum, &f.Size); err != nil {
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return nil, err
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}
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files = append(files, f)
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}
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if err := rows.Err(); err != nil {
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return nil, err
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}
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return files, nil
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}
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}
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func (e Exercice) GetFiles() ([]EFile, error) {
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if rows, err := DBQuery("SELECT id_file, origin, path, name, sha1, size FROM exercice_files WHERE id_exercice = ?", e.Id); err != nil {
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return nil, err
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} else {
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defer rows.Close()
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var files = make([]EFile, 0)
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for rows.Next() {
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var f EFile
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f.IdExercice = e.Id
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if err := rows.Scan(&f.Id, &f.origin, &f.Path, &f.Name, &f.Checksum, &f.Size); err != nil {
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return nil, err
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}
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files = append(files, f)
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}
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if err := rows.Err(); err != nil {
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return nil, err
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}
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return files, nil
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}
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}
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func (e Exercice) ImportFile(filePath string, origin string, digest []byte) (interface{}, error) {
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if digest == nil && !OptionalDigest {
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return EFile{}, errors.New("No digest given.")
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} else if fi, err := os.Stat(filePath); err != nil {
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return EFile{}, err
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} else if fd, err := os.Open(filePath); err != nil {
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return EFile{}, err
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} else {
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defer fd.Close()
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reader := bufio.NewReader(fd)
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hash := sha1.New()
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if _, err := io.Copy(hash, reader); err != nil {
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return EFile{}, err
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}
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result := hash.Sum(nil)
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if len(digest) != len(result) {
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return EFile{}, errors.New("Digests doesn't match: calculated: " + hex.EncodeToString(result) + " vs. given: " + hex.EncodeToString(digest))
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}
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for k := range result {
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if result[k] != digest[k] {
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return EFile{}, errors.New("Digests doesn't match: calculated: " + hex.EncodeToString(result) + " vs. given: " + hex.EncodeToString(digest))
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}
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}
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return e.AddFile(strings.TrimPrefix(filePath, FilesDir), origin, path.Base(filePath), result, fi.Size())
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}
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}
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func (e Exercice) AddFile(path string, origin string, name string, checksum []byte, size int64) (EFile, error) {
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if res, err := DBExec("INSERT INTO exercice_files (id_exercice, origin, path, name, sha1, size) VALUES (?, ?, ?, ?, ?, ?)", e.Id, origin, path, name, checksum, size); err != nil {
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return EFile{}, err
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} else if fid, err := res.LastInsertId(); err != nil {
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return EFile{}, err
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} else {
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return EFile{fid, origin, path, e.Id, name, checksum, size}, nil
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}
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}
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func (f EFile) Update() (int64, error) {
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if res, err := DBExec("UPDATE exercice_files SET id_exercice = ?, origin = ?, path = ?, name = ?, sha1 = ?, size = ? WHERE id_file = ?", f.IdExercice, f.origin, f.Path, f.Name, f.Checksum, f.Size, f.Id); err != nil {
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return 0, err
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} else if nb, err := res.RowsAffected(); err != nil {
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return 0, err
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} else {
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return nb, err
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}
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}
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func (f EFile) Delete() (int64, error) {
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if res, err := DBExec("DELETE FROM exercice_files WHERE id_file = ?", f.Id); err != nil {
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return 0, err
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} else if nb, err := res.RowsAffected(); err != nil {
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return 0, err
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} else {
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return nb, err
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}
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}
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func (f EFile) GetOrigin() (string) {
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return f.origin
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}
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