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From: "Daniel P. Berrange" <berrange@redhat.com>
To: qemu-devel@nongnu.org
Cc: qemu-block@nongnu.org, Kevin Wolf <kwolf@redhat.com>,
	Max Reitz <mreitz@redhat.com>,
	Markus Armbruster <armbru@redhat.com>,
	Michael Roth <mdroth@linux.vnet.ibm.com>,
	Eric Blake <eblake@redhat.com>,
	"Daniel P. Berrange" <berrange@redhat.com>
Subject: [Qemu-devel] [PATCH v1 6/6] block: convert to use qapi_stringify_ImageInfoSpecific
Date: Tue,  7 Jun 2016 11:11:15 +0100	[thread overview]
Message-ID: <1465294275-8733-7-git-send-email-berrange@redhat.com> (raw)
In-Reply-To: <1465294275-8733-1-git-send-email-berrange@redhat.com>

When 'qemu-img info' prints out format specific information,
it first converts the QAPI object into a JSON based QObject
data structure. Unfortunately structs have to be turned into
dicts, which looses all information about field ordering,
so the data printed appears in a semi-random order.

Convert this to use the qapi_stringify_ImageInfoSpecific()
which uses a visitor to directly pretty-print the objects
without the intermediate QObject conversion, and thus will
maintain struct field ordering.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
---
 block/qapi.c | 101 ++---------------------------------------------------------
 1 file changed, 3 insertions(+), 98 deletions(-)

diff --git a/block/qapi.c b/block/qapi.c
index 5594f74..769d7f3 100644
--- a/block/qapi.c
+++ b/block/qapi.c
@@ -29,7 +29,6 @@
 #include "block/write-threshold.h"
 #include "qmp-commands.h"
 #include "qapi-visit.h"
-#include "qapi/qmp-output-visitor.h"
 #include "qapi/qmp/types.h"
 #include "sysemu/block-backend.h"
 #include "qemu/cutils.h"
@@ -599,107 +598,13 @@ void bdrv_snapshot_dump(fprintf_function func_fprintf, void *f,
     }
 }
 
-static void dump_qdict(fprintf_function func_fprintf, void *f, int indentation,
-                       QDict *dict);
-static void dump_qlist(fprintf_function func_fprintf, void *f, int indentation,
-                       QList *list);
-
-static void dump_qobject(fprintf_function func_fprintf, void *f,
-                         int comp_indent, QObject *obj)
-{
-    switch (qobject_type(obj)) {
-        case QTYPE_QINT: {
-            QInt *value = qobject_to_qint(obj);
-            func_fprintf(f, "%" PRId64, qint_get_int(value));
-            break;
-        }
-        case QTYPE_QSTRING: {
-            QString *value = qobject_to_qstring(obj);
-            func_fprintf(f, "%s", qstring_get_str(value));
-            break;
-        }
-        case QTYPE_QDICT: {
-            QDict *value = qobject_to_qdict(obj);
-            dump_qdict(func_fprintf, f, comp_indent, value);
-            break;
-        }
-        case QTYPE_QLIST: {
-            QList *value = qobject_to_qlist(obj);
-            dump_qlist(func_fprintf, f, comp_indent, value);
-            break;
-        }
-        case QTYPE_QFLOAT: {
-            QFloat *value = qobject_to_qfloat(obj);
-            func_fprintf(f, "%g", qfloat_get_double(value));
-            break;
-        }
-        case QTYPE_QBOOL: {
-            QBool *value = qobject_to_qbool(obj);
-            func_fprintf(f, "%s", qbool_get_bool(value) ? "true" : "false");
-            break;
-        }
-        default:
-            abort();
-    }
-}
-
-static void dump_qlist(fprintf_function func_fprintf, void *f, int indentation,
-                       QList *list)
-{
-    const QListEntry *entry;
-    int i = 0;
-
-    for (entry = qlist_first(list); entry; entry = qlist_next(entry), i++) {
-        QType type = qobject_type(entry->value);
-        bool composite = (type == QTYPE_QDICT || type == QTYPE_QLIST);
-        func_fprintf(f, "%*s[%i]:%c", indentation * 4, "", i,
-                     composite ? '\n' : ' ');
-        dump_qobject(func_fprintf, f, indentation + 1, entry->value);
-        if (!composite) {
-            func_fprintf(f, "\n");
-        }
-    }
-}
-
-static void dump_qdict(fprintf_function func_fprintf, void *f, int indentation,
-                       QDict *dict)
-{
-    const QDictEntry *entry;
-
-    for (entry = qdict_first(dict); entry; entry = qdict_next(dict, entry)) {
-        QType type = qobject_type(entry->value);
-        bool composite = (type == QTYPE_QDICT || type == QTYPE_QLIST);
-        char *key = g_malloc(strlen(entry->key) + 1);
-        int i;
-
-        /* replace dashes with spaces in key (variable) names */
-        for (i = 0; entry->key[i]; i++) {
-            key[i] = entry->key[i] == '-' ? ' ' : entry->key[i];
-        }
-        key[i] = 0;
-        func_fprintf(f, "%*s%s:%c", indentation * 4, "", key,
-                     composite ? '\n' : ' ');
-        dump_qobject(func_fprintf, f, indentation + 1, entry->value);
-        if (!composite) {
-            func_fprintf(f, "\n");
-        }
-        g_free(key);
-    }
-}
 
 void bdrv_image_info_specific_dump(fprintf_function func_fprintf, void *f,
                                    ImageInfoSpecific *info_spec)
 {
-    QmpOutputVisitor *ov = qmp_output_visitor_new();
-    QObject *obj, *data;
-
-    visit_type_ImageInfoSpecific(qmp_output_get_visitor(ov), NULL, &info_spec,
-                                 &error_abort);
-    obj = qmp_output_get_qobject(ov);
-    assert(qobject_type(obj) == QTYPE_QDICT);
-    data = qdict_get(qobject_to_qdict(obj), "data");
-    dump_qobject(func_fprintf, f, 1, data);
-    qmp_output_visitor_cleanup(ov);
+    char *str = qapi_stringify_ImageInfoSpecific(info_spec, 4, 2);
+    func_fprintf(f, "%s", str);
+    g_free(str);
 }
 
 void bdrv_image_info_dump(fprintf_function func_fprintf, void *f,
-- 
2.5.5

  parent reply	other threads:[~2016-06-07 10:11 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-06-07 10:11 [Qemu-devel] [PATCH v1 0/6] Report format specific info for LUKS block driver Daniel P. Berrange
2016-06-07 10:11 ` [Qemu-devel] [PATCH v1 1/6] crypto: add support for querying parameters for block encryption Daniel P. Berrange
2016-06-07 14:17   ` Eric Blake
2016-06-07 10:11 ` [Qemu-devel] [PATCH v1 2/6] block: export LUKS specific data to qemu-img info Daniel P. Berrange
2016-06-07 15:36   ` Eric Blake
2016-06-07 15:51     ` Daniel P. Berrange
2016-06-07 16:11       ` Eric Blake
2016-06-07 10:11 ` [Qemu-devel] [PATCH v1 3/6] qapi: assert that visitor impls have required callbacks Daniel P. Berrange
2016-06-07 15:40   ` Eric Blake
2016-06-07 15:46     ` Daniel P. Berrange
2016-06-07 10:11 ` [Qemu-devel] [PATCH v1 4/6] qapi: add a text output visitor for pretty printing types Daniel P. Berrange
2016-06-07 16:09   ` Eric Blake
2016-06-07 16:20     ` Daniel P. Berrange
2016-06-07 16:40       ` Eric Blake
2016-06-07 16:45         ` Daniel P. Berrange
2016-06-07 10:11 ` [Qemu-devel] [PATCH v1 5/6] qapi: generate a qapi_stringify_TYPENAME method for all types Daniel P. Berrange
2016-06-07 16:23   ` Eric Blake
2016-06-07 10:11 ` Daniel P. Berrange [this message]
2016-06-07 16:59   ` [Qemu-devel] [PATCH v1 6/6] block: convert to use qapi_stringify_ImageInfoSpecific Eric Blake
2016-06-07 12:04 ` [Qemu-devel] [PATCH v1 0/6] Report format specific info for LUKS block driver Eric Blake
2016-06-07 14:35   ` Daniel P. Berrange
2016-06-14 13:56 ` Max Reitz
2016-06-14 14:05   ` Daniel P. Berrange

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