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package order
import (
"bufio"
"io"
"io/fs"
"os"
"pik/describe"
"pik/identity"
"strings"
)
type Element struct {
Identifier identity.Identity
Description string
}
type Order struct {
Elements []Element
}
var Empty = Order{}
func FromFile(f fs.FS, path string) (Order, error) {
fd, err := os.Open(path)
if err != nil {
return Empty, err
}
defer fd.Close()
return FromReader(fd)
}
func FromReader(r io.Reader) (Order, error) {
o := &Order{}
scanner := bufio.NewScanner(r)
scanner.Split(bufio.ScanLines)
for scanner.Scan() {
line := scanner.Text()
line = strings.TrimSpace(line)
if line == "" {
continue
}
for _, p := range describe.DescriptionPrefixes {
if strings.HasPrefix(line, p) {
continue
}
}
spl := strings.SplitN(line, "#", 2)
e := &Element{
Identifier: identity.New(spl[0]),
}
if len(spl) > 1 {
e.Description = spl[1]
}
o.Elements = append(o.Elements, *e)
}
return *o, nil
}
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