Git conversion: Make reactos the root directory, move rosapps, rostests, wallpapers into modules, and delete rossubsys.

sdk/lib/crt/stdio/_flsbuf.c

@@ -0,0 +1,83 @@
+/*
+ * COPYRIGHT:       GNU GPL, see COPYING in the top level directory
+ * PROJECT:         ReactOS crt library
+ * FILE:            lib/sdk/crt/stdio/_flsbuf.c
+ * PURPOSE:         Implementation of _flsbuf / _flswbuf
+ * PROGRAMMER:      Timo Kreuzer
+ */
+
+#include <precomp.h>
+
+BOOL __cdecl msvcrt_alloc_buffer(FILE *stream);
+
+int __cdecl
+_flsbuf(int ch, FILE *stream)
+{
+    int count, written;
+
+    /* Check if the stream supports flushing */
+    if ((stream->_flag & _IOSTRG) || !(stream->_flag & (_IORW|_IOWRT)))
+    {
+        stream->_flag |= _IOERR;
+        return EOF;
+    }
+
+    /* Always reset _cnt */
+    stream->_cnt = 0;
+
+    /* Check if this was a read buffer */
+    if (stream->_flag & _IOREAD)
+    {
+        /* Must be at the end of the file */
+        if (!(stream->_flag & _IOEOF))
+        {
+            stream->_flag |= _IOERR;
+            return EOF;
+        }
+
+        /* Reset buffer */
+        stream->_ptr = stream->_base;
+    }
+
+    /* Fixup flags */
+    stream->_flag &= ~(_IOREAD|_IOEOF);
+    stream->_flag |= _IOWRT;
+
+    /* Check if should get a buffer */
+    if (!(stream->_flag & _IONBF) && stream != stdout && stream != stderr)
+    {
+        /* If we have no buffer, try to allocate one */
+        if (!stream->_base) msvcrt_alloc_buffer(stream);
+    }
+
+    /* Check if we can use a buffer now */
+    if (stream->_base && !(stream->_flag & _IONBF))
+    {
+        /* We can, check if there is something to write */
+        count = (int)(stream->_ptr - stream->_base);
+        if (count > 0)
+            written = _write(stream->_file, stream->_base, count);
+        else
+            written = 0;
+
+        /* Reset buffer and put the char into it */
+        stream->_ptr = stream->_base + sizeof(TCHAR);
+        stream->_cnt = stream->_bufsiz - sizeof(TCHAR);
+        *(TCHAR*)stream->_base = ch;
+    }
+    else
+    {
+        /* There is no buffer, write the char directly */
+        count = sizeof(TCHAR);
+        written = _write(stream->_file, &ch, sizeof(TCHAR));
+    }
+
+    /* Check for failure */
+    if (written != count)
+    {
+        stream->_flag |= _IOERR;
+        return EOF;
+    }
+
+    return ch & (sizeof(TCHAR) > sizeof(char) ? 0xffff : 0xff);
+}