Relocating files in the nacl repo that belong in chrome.

ppapi/native_client/src/untrusted/nacl_ppapi_util/string_buffer.cc

+/*
+ * Copyright (c) 2011 The Chromium Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include <stdarg.h>
+
+#include "native_client/src/untrusted/nacl_ppapi_util/string_buffer.h"
+
+namespace nacl {
+
+StringBuffer::StringBuffer() {
+  nbytes_ = 1024;
+  insert_ = 0;
+  buffer_ = reinterpret_cast<char *>(malloc(nbytes_));
+  if (NULL == buffer_) {
+    perror("StringBuffer Ctor malloc");
+    abort();
+  }
+  buffer_[0] = '\0';
+}
+
+void StringBuffer::DiscardOutput() {
+  insert_ = 0;
+  buffer_[0] = '\0';
+}
+
+StringBuffer::~StringBuffer() {
+  nbytes_ = 0;
+  insert_ = 0;
+  free(buffer_);
+  buffer_ = NULL;
+}
+
+void StringBuffer::Printf(char const *fmt, ...) {
+  size_t space;
+  char *insert_pt;
+  va_list ap;
+  size_t written = 0;
+  char *new_buffer;
+
+  for (;;) {
+    space = nbytes_ - insert_;
+    insert_pt = buffer_ + insert_;
+    va_start(ap, fmt);
+    written = vsnprintf(insert_pt, space, fmt, ap);
+    va_end(ap);
+    if (written < space) {
+      insert_ += written;
+      break;
+    }
+    // insufficient space -- grow the buffer
+    new_buffer = reinterpret_cast<char *>(realloc(buffer_, 2 * nbytes_));
+    if (NULL == new_buffer) {
+      // give up
+      fprintf(stderr, "StringBufferPrintf: no memory\n");
+      break;
+    }
+    nbytes_ *= 2;
+    buffer_ = new_buffer;
+  }
+}
+
+}  // namespace nacl