[PATCH v2 2/3] monitor/hmp: add support for flag argument with value

[Stefan Reiter <s.reiter@proxmox.com>]

Adds support for the "-xS" parameter type, where "-x" denotes a flag
name and the "S" suffix indicates that this flag is supposed to take an
arbitrary string parameter.

These parameters are always optional, the entry in the qdict will be
omitted if the flag is not given.

Signed-off-by: Stefan Reiter <s.reiter@proxmox.com>
---
 monitor/hmp.c | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/monitor/hmp.c b/monitor/hmp.c
index d50c3124e1..a32dce7a35 100644
--- a/monitor/hmp.c
+++ b/monitor/hmp.c
@@ -980,6 +980,7 @@ static QDict *monitor_parse_arguments(Monitor *mon,
             {
                 const char *tmp = p;
                 int skip_key = 0;
+                int ret;
                 /* option */
 
                 c = *typestr++;
@@ -1002,8 +1003,22 @@ static QDict *monitor_parse_arguments(Monitor *mon,
                     }
                     if (skip_key) {
                         p = tmp;
+                    } else if (*typestr == 'S') {
+                        /* has option with string value */
+                        typestr++;
+                        tmp = p++;
+                        while (qemu_isspace(*p)) {
+                            p++;
+                        }
+                        ret = get_str(buf, sizeof(buf), &p);
+                        if (ret < 0) {
+                            monitor_printf(mon, "%s: value expected for -%c\n",
+                                           cmd->name, *tmp);
+                            goto fail;
+                        }
+                        qdict_put_str(qdict, key, buf);
                     } else {
-                        /* has option */
+                        /* has boolean option */
                         p++;
                         qdict_put_bool(qdict, key, true);
                     }
-- 
2.30.2