Changeset 80838 in vbox for trunk/src/VBox/Main/glue

Timestamp:

Sep 17, 2019 12:48:36 AM (5 years ago)

Author:

vboxsync

Message:

Main/glue: Added an erase method identical to the one in RTCString.

File:

• trunk/src/VBox/Main/glue/string.cpp (modified) (1 diff)

trunk/src/VBox/Main/glue/string.cpp

@@ -575 +575 @@
 
 
+Bstr &Bstr::erase(size_t offStart /*= 0*/, size_t cwcLength /*= RTSTR_MAX*/) RT_NOEXCEPT
+{
+    size_t cwc = length();
+    if (offStart < cwc)
+    {
+        if (cwcLength >= cwc - offStart)
+        {
+            if (!offStart)
+                cleanup();
+            else
+            {
+                /* Trail removal, nothing to move.  */
+                m_bstr[offStart] = '\0';
+                joltNoThrow(offStart); /* not entirely optimal... */
+            }
+        }
+        else if (cwcLength > 0)
+        {
+            /* Pull up the tail to offStart. */
+            size_t cwcAfter = cwc - offStart - cwcLength;
+            memmove(&m_bstr[offStart], &m_bstr[offStart + cwcLength], cwcAfter * sizeof(*m_bstr));
+            cwc -= cwcLength;
+            m_bstr[cwc] = '\0';
+            joltNoThrow(cwc); /* not entirely optimal... */
+        }
+    }
+    return *this;
+}
+
 
 /*********************************************************************************************************************************