Rework 'xinput list' code

* Drop the questionable --loop option
* Add a --long option (opposite of --short)
* Make --short the default if no device argument is given
* XI2: Make it possible to query a single device

Signed-off-by: Thomas Jaeger <ThJaeger@gmail.com>

squashed in a man page update for --short and --long.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

3 files changed, 55 insertions, 50 deletions

diff --git a/man/xinput.man b/man/xinput.man
index 518e1a0..eba85fd 100644
--- a/man/xinput.man
+++ b/man/xinput.man
@@ -6,7 +6,9 @@ xinput - utility to configure and test XInput devices
 
 .SH SYNOPSIS
 .B xinput
-[version] [list [\fIdevice_name\fP]] [set-pointer \fIdevice_name\fP]
+[version]
+[list [--short || --long] [\fIdevice_name\fP]]
+[set-pointer \fIdevice_name\fP]
 [get-feedbacks \fIdevice_name\fP]
 [set-mode \fIdevice_name\fP \fIABSOLUTE|RELATIVE\fP]
 [set-ptr-feedback \fIdevice_name\fP \fIthreshold\fP \fInum\fP \fIdenom\fP]
@@ -22,10 +24,12 @@ test if the XInput extension is available and return the version number
 of the program.
 .PP
 .TP 8
-.B xinput list [\fIdevice_name\fP]
-If no argument is given list all the input devices showing all their
-features. If an argument is given, show all the feature of \fIdevice_name\fP.
-Uses XListInputDevices(3).
+.B xinput list [--short || --long] [\fIdevice_name\fP]
+If no argument is given list all the input devices. If an argument is given,
+show all the features of \fIdevice_name\fP. Uses XListInputDevices(3).
+If --long is provided, the output includes detailed information about the
+capabilities of each devices. Otherwise, or if --short is provided, only the
+device names and some minimal information is listed.
 .PP
 .TP 8
 .B xinput get-feedbacks \fIdevice_name\fP
diff --git a/src/list.c b/src/list.c
index 0abde7a..ecf1f4b 100644
--- a/src/list.c
+++ b/src/list.c
@@ -104,42 +104,15 @@ print_info(Display* dpy, XDeviceInfo	*info, Bool shortformat)
 }
 
 static int list_xi1(Display     *display,
-                    int	        argc,
-                    char        *argv[],
-                    char        *name,
-                    char        *desc)
+                    int	        shortformat)
 {
     XDeviceInfo		*info;
     int			loop;
-    int                 shortformat = False;
-    int                 daemon = False;
+    int                 num_devices;
 
-    shortformat = (argc == 1 && strcmp(argv[0], "--short") == 0);
-    daemon = (argc == 1 && strcmp(argv[0], "--loop") == 0);
-
-    if (argc == 0 || shortformat || daemon) {
-	int		num_devices;
-
-        do {
-            info = XListInputDevices(display, &num_devices);
-            for(loop=0; loop<num_devices; loop++) {
-                print_info(display, info+loop, shortformat);
-            }
-        } while(daemon);
-    } else {
-	int	ret = EXIT_SUCCESS;
-
-	for(loop=0; loop<argc; loop++) {
-	    info = find_device_info(display, argv[loop], False);
-
-	    if (!info) {
-		fprintf(stderr, "unable to find device %s\n", argv[loop]);
-		ret = EXIT_FAILURE;
-	    } else {
-		print_info(display, info, shortformat);
-	    }
-	}
-	return ret;
+    info = XListInputDevices(display, &num_devices);
+    for(loop=0; loop<num_devices; loop++) {
+        print_info(display, info+loop, shortformat);
     }
     return EXIT_SUCCESS;
 }
@@ -240,21 +213,16 @@ print_info_xi2(Display* display, XIDeviceInfo *dev, Bool shortformat)
 }
 
 
-int
-list_xi2(Display	*display,
-         int	argc,
-         char	*argv[],
-         char	*name,
-         char	*desc)
+static int
+list_xi2(Display *display,
+         int     shortformat)
 {
     int major = XI_2_Major,
         minor = XI_2_Minor;
     int ndevices;
-    int i, j, shortformat;
+    int i, j;
     XIDeviceInfo *info, *dev;
 
-    shortformat = (argc == 1 && strcmp(argv[0], "--short") == 0);
-
     if (XIQueryVersion(display, &major, &minor) != Success ||
         (major * 1000 + minor) < (XI_2_Major * 1000 + XI_2_Minor))
     {
@@ -312,11 +280,44 @@ list(Display	*display,
      char	*name,
      char	*desc)
 {
+    int shortformat = (argc >= 1 && strcmp(argv[0], "--short") == 0);
+    int longformat = (argc >= 1 && strcmp(argv[0], "--long") == 0);
+    int arg_dev = shortformat || longformat;
+
+    if (argc > arg_dev)
+    {
 #ifdef HAVE_XI2
-    if (xinput_version(display) == XI_2_Major)
-        return list_xi2(display, argc, argv, name, desc);
+        if (xinput_version(display) == XI_2_Major)
+        {
+            XIDeviceInfo *info = xi2_find_device_info(display, argv[arg_dev]);
+
+            if (!info) {
+                fprintf(stderr, "unable to find device %s\n", argv[arg_dev]);
+                return EXIT_FAILURE;
+            } else {
+                print_info_xi2(display, info, shortformat);
+                return EXIT_SUCCESS;
+            }
+        } else
 #endif
-    return list_xi1(display, argc, argv, name, desc);
+        {
+            XDeviceInfo *info = find_device_info(display, argv[arg_dev], False);
+
+            if (!info) {
+                fprintf(stderr, "unable to find device %s\n", argv[arg_dev]);
+                return EXIT_FAILURE;
+            } else {
+                print_info(display, info, shortformat);
+                return EXIT_SUCCESS;
+            }
+        }
+    } else {
+#ifdef HAVE_XI2
+        if (xinput_version(display) == XI_2_Major)
+            return list_xi2(display, !longformat);
+#endif
+        return list_xi1(display, !longformat);
+    }
 }
 
 /* end of list.c */
diff --git a/src/xinput.c b/src/xinput.c
index 1a1e7ce..3c8b23c 100644
--- a/src/xinput.c
+++ b/src/xinput.c
@@ -68,7 +68,7 @@ static entry drivers[] =
      set_mode
     },
     {"list",
-     "[--loop || --short || <device name>...]",
+     "[--short || --long] [<device name>...]",
      list
     },
     {"query-state",