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|
package windows
import (
"bufio"
"fmt"
"io"
"os"
"regexp"
"strings"
)
var (
versionRe = regexp.MustCompile(`(?i)^\[Version\][ ]*$`)
classGuidRe = regexp.MustCompile(`(?i)^ClassGuid[ ]*=[ ]*(.+)$`)
)
func ParseDriverClassGuid(driverName, infPath string) (classGuid string, err error) {
// Retrieve the ClassGuid which is needed for the Windows registry entries.
file, err := os.Open(infPath)
if err != nil {
err = fmt.Errorf("Failed to open driver %s inf %s: %w", driverName, infPath, err)
return
}
defer func() {
file.Close()
if classGuid == "" {
err = fmt.Errorf("Failed to parse driver %s classGuid %s", driverName, infPath)
}
}()
classGuid = MatchClassGuid(file)
return
}
func MatchClassGuid(r io.Reader) (classGuid string) {
scanner := bufio.NewScanner(r)
versionFlag := false
for scanner.Scan() {
line := scanner.Text()
if !versionFlag {
if versionRe.MatchString(line) {
versionFlag = true
}
continue
}
matches := classGuidRe.FindStringSubmatch(line)
if len(matches) > 1 {
classGuid = strings.TrimSpace(matches[1])
if classGuid != "" {
return
}
}
}
return
}
|
