Files
anydb/app/attr.go
Thomas von Dein 6de8a6168a add GPL headers
2024-12-21 00:08:16 +01:00

109 lines
2.1 KiB
Go

/*
Copyright © 2024 Thomas von Dein
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package app
import (
"fmt"
"io"
"os"
"unicode/utf8"
)
type DbAttr struct {
Key string
Val string
Bin []byte
Args []string
Tags []string
File string
Encrypted bool
}
func (attr *DbAttr) ParseKV() error {
switch len(attr.Args) {
case 1:
// 1 arg = key + read from file or stdin
attr.Key = attr.Args[0]
if attr.File == "" {
attr.File = "-"
}
case 2:
attr.Key = attr.Args[0]
attr.Val = attr.Args[1]
if attr.Args[1] == "-" {
attr.File = "-"
}
}
if attr.File != "" {
return attr.GetFileValue()
}
return nil
}
func (attr *DbAttr) GetFileValue() error {
var fd io.Reader
if attr.File == "-" {
stat, _ := os.Stdin.Stat()
if (stat.Mode() & os.ModeCharDevice) == 0 {
fd = os.Stdin
}
} else {
filehandle, err := os.OpenFile(attr.File, os.O_RDONLY, 0600)
if err != nil {
return fmt.Errorf("failed to open file %s: %w", attr.File, err)
}
fd = filehandle
}
if fd != nil {
// read from file or stdin pipe
data, err := io.ReadAll(fd)
if err != nil {
return fmt.Errorf("failed to read from pipe: %w", err)
}
// poor man's text file test
sdata := string(data)
if utf8.ValidString(sdata) {
attr.Val = sdata
} else {
attr.Bin = data
}
} else {
// read from console stdin
var input string
var data string
for {
_, err := fmt.Scanln(&input)
if err != nil {
break
}
data += input + "\n"
}
attr.Val = data
}
return nil
}