Changeset 48820 in vbox for trunk/src

Timestamp:

Oct 2, 2013 1:56:36 PM (12 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

89477

Message:

IPRT/RTFileModeToFlags(Ex): Introduced "oa" mode for opening + appending an existing file.

Location:

trunk/src/VBox

Files:

• . (modified) (1 prop)
• Main/idl/VirtualBox.xidl (modified) (1 diff)
• Runtime/common/misc/RTFileModeToFlags.cpp (modified) (5 diffs)

trunk/src/VBox/Main/idl/VirtualBox.xidl

@@ -10742 +10742 @@
             <li><tt>"ca"</tt>: Creates a new file, always. Overwrites an existing file.</li>
             <li><tt>"ce"</tt>: Creates a new file if it does not exist. Fail if exist.</li>
+            <li><tt>"oa"</tt>: Opens an existing file and places the file pointer at the
+              end of the file, if opened with write access. Create the file if it does not exist.</li>
             <li><tt>"oc"</tt>: Opens and existing file or create it if it does not exist.</li>
             <li><tt>"oe"</tt>: Opens an existing file or fail if it does not exist.</li>

trunk/src/VBox/Runtime/common/misc/RTFileModeToFlags.cpp

@@ -56 +56 @@
         switch (*pszCur)
         {
-            /* Opens an existing file for reading and places the
-             * file pointer at the end of the file. */
+            /* Opens an existing file for writing and places the
+             * file pointer at the end of the file. The file is
+             * created if it does not exist. */
             case 'a':
                 if ((uMode & RTFILE_O_ACTION_MASK) == 0)
                 {
-                    uMode |=   RTFILE_O_OPEN
-                             | RTFILE_O_READ
+                    uMode |=   RTFILE_O_OPEN_CREATE
+                             | RTFILE_O_WRITE
                              | RTFILE_O_APPEND;
                 }
@@ -136 +137 @@
                 switch (chPrev)
                 {
+                    case 'a':
                     case 'c':
                     case 'w':
@@ -143 +145 @@
                         break;
 
-                    case 'a':
                     case 'r':
                         /* Also open / create file with write access. */
@@ -216 +217 @@
 
     /*
-     * Handle open mode.
+     * Handle access mode.
      */
     while (    pszCur
@@ -306 +307 @@
     else if (!RTStrCmp(pszCur, "oc"))
         uMode |= RTFILE_O_OPEN_CREATE;
+    /* Open existing file and place the file pointer at
+     * the end of the file, if opened with write access.
+     * Create the file if does not exist. */
+    else if (!RTStrCmp(pszCur, "oa"))
+        uMode |= RTFILE_O_OPEN_CREATE | RTFILE_O_APPEND;
     /* Open existing, fail if does not exist. */
     else if (!RTStrCmp(pszCur, "oe"))