Commit b26ae1cb authored by Peter Xu's avatar Peter Xu Committed by Eric Blake
Browse files

qobject: introduce qobject_get_try_str() 



A quick way to fetch string from qobject when it's a QString.

Reviewed-by: default avatarFam Zheng <famz@redhat.com>
Reviewed-by: default avatarStefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: default avatarPeter Xu <peterx@redhat.com>
Message-Id: <20180309090006.10018-4-peterx@redhat.com>
Reviewed-by: default avatarEric Blake <eblake@redhat.com>
[eblake: rebase to qobject_to() macro]
Signed-off-by: default avatarEric Blake <eblake@redhat.com>
parent 77593202

include/qapi/qmp/qstring.h

+1 −0
Original line number Diff line number Diff line
@@ -28,6 +28,7 @@ QString *qstring_from_substr(const char *str, int start, int end); 
size_t qstring_get_length(const QString *qstring);

const char *qstring_get_str(const QString *qstring);

const char *qstring_get_try_str(const QString *qstring);

const char *qobject_get_try_str(const QObject *qstring);

void qstring_append_int(QString *qstring, int64_t value);

void qstring_append(QString *qstring, const char *str);

void qstring_append_chr(QString *qstring, int c);

qobject/qstring.c

+11 −0
Original line number Diff line number Diff line
@@ -126,6 +126,17 @@ const char *qstring_get_try_str(const QString *qstring) 
    return qstring ? qstring_get_str(qstring) : NULL;

}



/**

 * qobject_get_try_str(): Return a pointer to the corresponding string

 *

 * NOTE: the string will only be returned if the object is valid, and

 * its type is QString, otherwise NULL is returned.

 */

const char *qobject_get_try_str(const QObject *qstring)

{

    return qstring_get_try_str(qobject_to(QString, qstring));

}



/**

 * qstring_is_equal(): Test whether the two QStrings are equal

 */