Code cleanup: moving poly/ into xenia/base/

src/xenia/base/string_buffer.cc

@@ -0,0 +1,71 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2013 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#include "xenia/base/string_buffer.h"
+
+#include <algorithm>
+#include <cstdarg>
+
+namespace xe {
+
+StringBuffer::StringBuffer(size_t initial_capacity) {
+  buffer_.reserve(std::max(initial_capacity, static_cast<size_t>(1024)));
+}
+
+StringBuffer::~StringBuffer() = default;
+
+void StringBuffer::Reset() { buffer_.resize(0); }
+
+void StringBuffer::Grow(size_t additional_length) {
+  size_t old_capacity = buffer_.capacity();
+  if (buffer_.size() + additional_length <= old_capacity) {
+    return;
+  }
+  size_t new_capacity =
+      std::max(buffer_.size() + additional_length, old_capacity * 2);
+  buffer_.reserve(new_capacity);
+}
+
+void StringBuffer::Append(const std::string& value) {
+  AppendBytes(reinterpret_cast<const uint8_t*>(value.data()), value.size());
+}
+
+void StringBuffer::Append(const char* format, ...) {
+  va_list args;
+  va_start(args, format);
+  AppendVarargs(format, args);
+  va_end(args);
+}
+
+void StringBuffer::AppendVarargs(const char* format, va_list args) {
+  int length = vsnprintf(nullptr, 0, format, args);
+  auto offset = buffer_.size();
+  Grow(length + 1);
+  buffer_.resize(buffer_.size() + length);
+  vsnprintf(buffer_.data() + offset, buffer_.capacity(), format, args);
+  buffer_[buffer_.size()] = 0;
+}
+
+void StringBuffer::AppendBytes(const uint8_t* buffer, size_t length) {
+  auto offset = buffer_.size();
+  Grow(length + 1);
+  buffer_.resize(buffer_.size() + length);
+  memcpy(buffer_.data() + offset, buffer, length);
+  buffer_[buffer_.size()] = 0;
+}
+
+const char* StringBuffer::GetString() const { return buffer_.data(); }
+
+std::string StringBuffer::to_string() {
+  return std::string(buffer_.data(), buffer_.size());
+}
+
+char* StringBuffer::ToString() { return strdup(buffer_.data()); }
+
+}  // namespace xe