Reuse temporary files (fixes #4)

internal/config/config.go

@@ -145,6 +145,7 @@ type OptionsConfiguration struct {
 	URAccepted           int      `xml:"urAccepted"` // Accepted usage reporting version; 0 for off (undecided), -1 for off (permanently)
 	RestartOnWakeup      bool     `xml:"restartOnWakeup" default:"true"`
 	AutoUpgradeIntervalH int      `xml:"autoUpgradeIntervalH" default:"12"` // 0 for off
+	KeepTemporariesH     int      `xml:"keepTemporariesH" default:"24"`     // 0 for off
 
 	Deprecated_RescanIntervalS int    `xml:"rescanIntervalS,omitempty" json:"-"`
 	Deprecated_UREnabled       bool   `xml:"urEnabled,omitempty" json:"-"`

internal/config/config_test.go

@@ -49,6 +49,7 @@ func TestDefaultValues(t *testing.T) {
 		UPnPRenewal:          30,
 		RestartOnWakeup:      true,
 		AutoUpgradeIntervalH: 12,
+		KeepTemporariesH:     24,
 	}
 
 	cfg := New("test", device1)
@@ -141,6 +142,7 @@ func TestOverriddenValues(t *testing.T) {
 		UPnPRenewal:          15,
 		RestartOnWakeup:      false,
 		AutoUpgradeIntervalH: 24,
+		KeepTemporariesH:     48,
 	}
 
 	cfg, err := Load("testdata/overridenvalues.xml", device1)

internal/config/testdata/overridenvalues.xml

@@ -17,5 +17,6 @@
         <upnpRenewalMinutes>15</upnpRenewalMinutes>
         <restartOnWakeup>false</restartOnWakeup>
         <autoUpgradeIntervalH>24</autoUpgradeIntervalH>
+        <keepTemporariesH>48</keepTemporariesH>
     </options>
 </configuration>