94 lines
1.6 KiB
Go
94 lines
1.6 KiB
Go
package colormapping
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import (
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"bufio"
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"bytes"
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"errors"
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"github.com/sirupsen/logrus"
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"image/color"
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"mapserver/vfs"
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"strconv"
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"strings"
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)
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type ColorMapping struct {
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colors map[string]*color.RGBA
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}
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func (m *ColorMapping) GetColor(name string) *color.RGBA {
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return m.colors[name]
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}
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func (m *ColorMapping) LoadBytes(buffer []byte) (int, error) {
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scanner := bufio.NewScanner(bytes.NewReader(buffer))
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count := 0
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line := 0
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for scanner.Scan() {
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line++
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txt := strings.Trim(scanner.Text(), " ")
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if len(txt) == 0 {
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//empty
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continue
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}
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if strings.HasPrefix(txt, "#") {
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//comment
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continue
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}
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parts := strings.Fields(txt)
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if len(parts) < 4 {
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return 0, errors.New("invalid line: #" + strconv.Itoa(line))
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}
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if len(parts) >= 4 {
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r, err := strconv.ParseInt(parts[1], 10, 32)
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if err != nil {
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return 0, err
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}
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g, err := strconv.ParseInt(parts[2], 10, 32)
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if err != nil {
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return 0, err
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}
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b, err := strconv.ParseInt(parts[3], 10, 32)
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if err != nil {
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return 0, err
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}
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c := color.RGBA{uint8(r), uint8(g), uint8(b), 0xFF}
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m.colors[parts[0]] = &c
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count++
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}
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if len(parts) >= 5 {
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//with alpha
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}
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}
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return count, nil
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}
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func (m *ColorMapping) LoadVFSColors(useLocal bool, filename string) (int, error) {
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buffer, err := vfs.FSByte(useLocal, "/colors.txt")
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if err != nil {
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return 0, err
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}
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log.WithFields(logrus.Fields{"size": len(buffer),
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"filename": filename,
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"useLocal": useLocal}).Info("Loading default colors")
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return m.LoadBytes(buffer)
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}
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func NewColorMapping() *ColorMapping {
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return &ColorMapping{colors: make(map[string]*color.RGBA)}
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}
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