QString: Introduce qstring_append_chr()

It appends a C char to a QString.

Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

2 files changed, 20 insertions, 5 deletions

diff --git a/qstring.c b/qstring.c
index 441a9e6ef0..e422bd952d 100644
--- a/qstring.c
+++ b/qstring.c
@@ -53,25 +53,39 @@ QString *qstring_from_str(const char *str)
     return qstring;
 }
 
-/* qstring_append(): Append a C string to a QString
- */
-void qstring_append(QString *qstring, const char *str)
+static void capacity_increase(QString *qstring, size_t len)
 {
-    size_t len = strlen(str);
-
     if (qstring->capacity < (qstring->length + len)) {
         qstring->capacity += len;
         qstring->capacity *= 2; /* use exponential growth */
 
         qstring->string = qemu_realloc(qstring->string, qstring->capacity + 1);
     }
+}
+
+/* qstring_append(): Append a C string to a QString
+ */
+void qstring_append(QString *qstring, const char *str)
+{
+    size_t len = strlen(str);
 
+    capacity_increase(qstring, len);
     memcpy(qstring->string + qstring->length, str, len);
     qstring->length += len;
     qstring->string[qstring->length] = 0;
 }
 
 /**
+ * qstring_append_chr(): Append a C char to a QString
+ */
+void qstring_append_chr(QString *qstring, int c)
+{
+    capacity_increase(qstring, 1);
+    qstring->string[qstring->length++] = c;
+    qstring->string[qstring->length] = 0;
+}
+
+/**
  * qobject_to_qstring(): Convert a QObject to a QString
  */
 QString *qobject_to_qstring(const QObject *obj)
diff --git a/qstring.h b/qstring.h
index 65905d457f..43581de761 100644
--- a/qstring.h
+++ b/qstring.h
@@ -14,6 +14,7 @@ QString *qstring_new(void);
 QString *qstring_from_str(const char *str);
 const char *qstring_get_str(const QString *qstring);
 void qstring_append(QString *qstring, const char *str);
+void qstring_append_chr(QString *qstring, int c);
 QString *qobject_to_qstring(const QObject *obj);
 
 #endif /* QSTRING_H */