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ui: add qapi parser for -display

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Add parse_display_qapi() function which parses the -display command line
using a qapi visitor for DisplayOptions.  Wire up as default catch in
parse_display().

Improves the error message for unknown display types.

Also enables json as -display argument, i.e. -display "{ 'type': 'gtk' }"

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 20180507095539.19584-2-kraxel@redhat.com
This commit is contained in:
Gerd Hoffmann
2018-05-07 11:55:36 +02:00
parent f31f9c1080
commit 776d1344bd
1 changed files with 22 additions and 2 deletions
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24
vl.c
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@@ -120,12 +120,14 @@ int main(int argc, char **argv)
#include "ui/qemu-spice.h" #include "ui/qemu-spice.h"
#include "qapi/string-input-visitor.h" #include "qapi/string-input-visitor.h"
#include "qapi/opts-visitor.h" #include "qapi/opts-visitor.h"
#include "qapi/clone-visitor.h"
#include "qom/object_interfaces.h" #include "qom/object_interfaces.h"
#include "exec/semihost.h" #include "exec/semihost.h"
#include "crypto/init.h" #include "crypto/init.h"
#include "sysemu/replay.h" #include "sysemu/replay.h"
#include "qapi/qapi-events-run-state.h" #include "qapi/qapi-events-run-state.h"
#include "qapi/qapi-visit-block-core.h" #include "qapi/qapi-visit-block-core.h"
#include "qapi/qapi-visit-ui.h"
#include "qapi/qapi-commands-block-core.h" #include "qapi/qapi-commands-block-core.h"
#include "qapi/qapi-commands-misc.h" #include "qapi/qapi-commands-misc.h"
#include "qapi/qapi-commands-run-state.h" #include "qapi/qapi-commands-run-state.h"
@@ -2088,6 +2090,25 @@ static void select_vgahw(const char *p)
} }
} }
static void parse_display_qapi(const char *optarg)
{
Error *err = NULL;
DisplayOptions *opts;
Visitor *v;
v = qobject_input_visitor_new_str(optarg, "type", &err);
if (!v) {
error_report_err(err);
exit(1);
}
visit_type_DisplayOptions(v, NULL, &opts, &error_fatal);
QAPI_CLONE_MEMBERS(DisplayOptions, &dpy, opts);
qapi_free_DisplayOptions(opts);
visit_free(v);
}
static void parse_display(const char *p) static void parse_display(const char *p)
{ {
const char *opts; const char *opts;
@@ -2203,8 +2224,7 @@ static void parse_display(const char *p)
} else if (strstart(p, "none", &opts)) { } else if (strstart(p, "none", &opts)) {
dpy.type = DISPLAY_TYPE_NONE; dpy.type = DISPLAY_TYPE_NONE;
} else { } else {
error_report("unknown display type"); parse_display_qapi(p);
exit(1);
} }
} }