1 files changed, 67 insertions, 0 deletions
diff --git a/modules/woff2/src/woff2_out.cc b/modules/woff2/src/woff2_out.cc
new file mode 100644
index 0000000000..8ab32681f1
--- /dev/null
+++ b/modules/woff2/src/woff2_out.cc
@@ -0,0 +1,67 @@
+/* Copyright 2014 Google Inc. All Rights Reserved.
+
+   Distributed under MIT license.
+   See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
+*/
+
+/* Output buffer for WOFF2 decompression. */
+
+#include <woff2/output.h>
+
+using std::string;
+
+namespace woff2 {
+
+WOFF2StringOut::WOFF2StringOut(string* buf)
+  : buf_(buf),
+    max_size_(kDefaultMaxSize),
+    offset_(0) {}
+
+bool WOFF2StringOut::Write(const void *buf, size_t n) {
+  return Write(buf, offset_, n);
+}
+
+bool WOFF2StringOut::Write(const void *buf, size_t offset, size_t n) {
+  if (offset > max_size_ || n > max_size_ - offset) {
+    return false;
+  }
+  if (offset == buf_->size()) {
+    buf_->append(static_cast<const char*>(buf), n);
+  } else {
+    if (offset + n > buf_->size()) {
+      buf_->append(offset + n - buf_->size(), 0);
+    }
+    buf_->replace(offset, n, static_cast<const char*>(buf), n);
+  }
+  offset_ = std::max(offset_, offset + n);
+
+  return true;
+}
+
+void WOFF2StringOut::SetMaxSize(size_t max_size) {
+  max_size_ = max_size;
+  if (offset_ > max_size_) {
+    offset_ = max_size_;
+  }
+}
+
+WOFF2MemoryOut::WOFF2MemoryOut(uint8_t* buf, size_t buf_size)
+  : buf_(buf),
+    buf_size_(buf_size),
+    offset_(0) {}
+
+bool WOFF2MemoryOut::Write(const void *buf, size_t n) {
+  return Write(buf, offset_, n);
+}
+
+bool WOFF2MemoryOut::Write(const void *buf, size_t offset, size_t n) {
+  if (offset > buf_size_ || n > buf_size_ - offset) {
+    return false;
+  }
+  std::memcpy(buf_ + offset, buf, n);
+  offset_ = std::max(offset_, offset + n);
+
+  return true;
+}
+
+} // namespace woff2