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fw-daemon/sgfw/icons.go

90 lines
1.6 KiB

package sgfw
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import (
"fmt"
"io/ioutil"
"os"
"path"
"strings"
)
type DesktopEntry struct {
icon string
name string
}
var entryMap = map[string]*DesktopEntry{}
var initialized = false
func entryForPath(p string) *DesktopEntry {
if !initialized {
initIcons()
}
entry, ok := entryMap[path.Base(p)]
if ok {
return entry
}
return entryMap[p]
}
func initIcons() {
if initialized {
return
}
path := "/usr/share/applications"
dir, err := os.Open(path)
if err != nil {
log.Warningf("Failed to open %s for reading: %v", path, err)
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return
}
names, err := dir.Readdirnames(0)
if err != nil {
log.Warningf("Could not read directory %s: %v", path, err)
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return
}
for _, n := range names {
if strings.HasSuffix(n, ".desktop") {
loadDesktopFile(fmt.Sprintf("%s/%s", path, n))
}
}
initialized = true
}
func loadDesktopFile(path string) {
bs, err := ioutil.ReadFile(path)
if err != nil {
log.Warningf("Error reading %s: %v", path, err)
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return
}
exec := ""
icon := ""
name := ""
inDE := false
for _, line := range strings.Split(string(bs), "\n") {
if strings.Contains(line, "[Desktop Entry]") {
inDE = true
} else if len(line) > 0 && line[0] == '[' {
inDE = false
}
if inDE && strings.HasPrefix(line, "Exec=") {
fields := strings.Fields(line[5:])
if len(fields) > 0 {
exec = fields[0]
}
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}
if inDE && strings.HasPrefix(line, "Icon=") {
icon = line[5:]
}
if inDE && strings.HasPrefix(line, "Name=") {
name = line[5:]
}
}
if exec != "" && icon != "" {
entryMap[exec] = &DesktopEntry{
icon: icon,
name: name,
}
}
}