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hardware.go
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hardware.go
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package indiserver
import (
"fmt"
"os"
"sort"
"strings"
"github.com/beevik/etree"
)
// Device represents a device in the drivers list.
type Device struct {
Name string
Manufacturer string
DriverCaption string
DriverName string
Version string
}
type DeviceGroups map[string][]Device
// ListDrivers returns a map of grouped devices.
func ListDrivers() (DeviceGroups, error) {
files, err := os.ReadDir("/usr/share/indi")
if err != nil {
return nil, err
}
groups := make(DeviceGroups)
for _, file := range files {
if !file.IsDir() && strings.HasSuffix(file.Name(), ".xml") {
err = parseXML(fmt.Sprintf("/usr/share/indi/%s", file.Name()), groups)
if err != nil {
return nil, err
}
}
}
sortDrivers(groups)
return groups, nil
}
func parseXML(filepath string, groups DeviceGroups) error {
doc := etree.NewDocument()
err := doc.ReadFromFile(filepath)
if err != nil {
return err
}
driversList := doc.SelectElement("driversList")
if driversList == nil {
return nil
}
for _, groupElem := range driversList.SelectElements("devGroup") {
var drivers []Device
group := groupElem.SelectAttrValue("group", "")
if existingDrivers, ok := groups[group]; ok {
drivers = append(existingDrivers, drivers...)
}
for _, driver := range groupElem.ChildElements() {
driverChild := driver.SelectElement("driver")
device := Device{
Name: driver.SelectAttrValue("label", ""),
Manufacturer: driver.SelectAttrValue("manufacturer", ""),
DriverCaption: driverChild.SelectAttrValue("name", ""),
DriverName: driverChild.Text(),
Version: driver.SelectElement("version").Text(),
}
drivers = append(drivers, device)
}
groups[group] = drivers
}
return nil
}
func sortDrivers(groups DeviceGroups) {
for _, drivers := range groups {
sort.Slice(drivers, func(i, j int) bool {
if drivers[i].Manufacturer != drivers[j].Manufacturer {
return drivers[i].Manufacturer < drivers[j].Manufacturer
}
return drivers[i].Name < drivers[j].Name
})
}
}