1 files changed, 75 insertions, 0 deletions
diff --git a/libxsde/xsde/cxx/string.cxx b/libxsde/xsde/cxx/string.cxx
new file mode 100644
index 0000000..2edb3cb
--- /dev/null
+++ b/libxsde/xsde/cxx/string.cxx
@@ -0,0 +1,75 @@
+// file      : xsde/cxx/string.cxx
+// author    : Boris Kolpackov <boris@codesynthesis.com>
+// copyright : Copyright (c) 2005-2009 Code Synthesis Tools CC
+// license   : GNU GPL v2 + exceptions; see accompanying LICENSE file
+
+#include <string.h>
+
+#include <xsde/cxx/string.hxx>
+
+namespace xsde
+{
+  namespace cxx
+  {
+    string::error string::
+    assign (const char* s, size_t size)
+    {
+      if (size + 1 > capacity_)
+        if (error e = resize (size + 1, false))
+          return e;
+
+      if (size != 0)
+        memcpy (data_, s, size);
+
+      data_[size] = '\0';
+
+      size_ = size;
+
+      return error_none;
+    }
+
+    string::error string::
+    append (const char* s, size_t size)
+    {
+      if (size_ + size + 1 > capacity_)
+        if (error e = resize (size_ + size + 1, true))
+          return e;
+
+      if (size != 0)
+        memcpy (data_ + size_, s, size);
+
+      size_ += size;
+      data_[size_] = '\0';
+
+      return error_none;
+    }
+
+    string::error string::
+    resize (size_t new_cap, bool copy)
+    {
+      // Start with at least 64 chars (32 * 2).
+      //
+      size_t cap = capacity_ ? capacity_ : 32;
+
+      if (new_cap <= 2 * cap)
+        new_cap = 2 * cap;
+      else
+        new_cap += (new_cap & 1) ? 1 : 0; // Make even.
+
+      char* p = new char[new_cap];
+
+      if (p == 0)
+        return error_no_memory;
+
+      if (copy && size_ != 0)
+        memcpy (p, data_, size_ + 1);
+
+      delete[] data_;
+
+      data_ = p;
+      capacity_ = new_cap;
+
+      return error_none;
+    }
+  }
+}