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Re: [PATCH v7 1/4] monitor/hmp: add support for flag argument with value
From: |
Dr. David Alan Gilbert |
Subject: |
Re: [PATCH v7 1/4] monitor/hmp: add support for flag argument with value |
Date: |
Tue, 26 Oct 2021 11:07:31 +0100 |
User-agent: |
Mutt/2.0.7 (2021-05-04) |
* Stefan Reiter (s.reiter@proxmox.com) wrote:
> Adds support for the "-xV" parameter type, where "-x" denotes a flag
> name and the "V" 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>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
> ---
>
> v6:
> It wasn't possible to pass the 'connected' parameter to set_password, since
> the
> code to handle optional parameters couldn't live with a different param (not
> starting with '-') coming up instead - fix that by advancing over the 'value
> flag' modifier in case `*p != '-'`.
>
> Also change the modifier to 'V' instead of 'S' so it can be distinguished from
> an actual trailing 'S' type param.
>
> Discovered in testing. I dropped Eric's R-b due to the code change.
>
> monitor/hmp.c | 19 ++++++++++++++++++-
> monitor/monitor-internal.h | 3 ++-
> 2 files changed, 20 insertions(+), 2 deletions(-)
>
> diff --git a/monitor/hmp.c b/monitor/hmp.c
> index d50c3124e1..899e0c990f 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++;
> @@ -1002,11 +1003,27 @@ static QDict *monitor_parse_arguments(Monitor *mon,
> }
> if (skip_key) {
> p = tmp;
> + } else if (*typestr == 'V') {
> + /* 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);
> }
> + } else if (*typestr == 'V') {
> + typestr++;
> }
> }
> break;
> diff --git a/monitor/monitor-internal.h b/monitor/monitor-internal.h
> index 9c3a09cb01..9e708b329d 100644
> --- a/monitor/monitor-internal.h
> +++ b/monitor/monitor-internal.h
> @@ -63,7 +63,8 @@
> * '.' other form of optional type (for 'i' and 'l')
> * 'b' boolean
> * user mode accepts "on" or "off"
> - * '-' optional parameter (eg. '-f')
> + * '-' optional parameter (eg. '-f'); if followed by an 'V', it
> + * specifies an optional string param (e.g. '-fV' allows '-f
> foo')
> *
> */
>
> --
> 2.30.2
>
>
--
Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK
- [PATCH v7 0/4] VNC-related HMP/QMP fixes, Stefan Reiter, 2021/10/21
- [PATCH v7 1/4] monitor/hmp: add support for flag argument with value, Stefan Reiter, 2021/10/21
- [PATCH v7 4/4] qapi/monitor: only allow 'keep' SetPasswordAction for VNC and deprecate, Stefan Reiter, 2021/10/21
- [PATCH v7 3/4] qapi/monitor: allow VNC display id in set/expire_password, Stefan Reiter, 2021/10/21
- [PATCH v7 2/4] qapi/monitor: refactor set/expire_password with enums, Stefan Reiter, 2021/10/21
- Re: [PATCH v7 0/4] VNC-related HMP/QMP fixes, Markus Armbruster, 2021/10/21