1 files changed, 115 insertions, 0 deletions
diff --git a/src/core/clipboard_util_win.cpp b/src/core/clipboard_util_win.cpp
new file mode 100644
index 000000000..601e44180
--- /dev/null
+++ b/src/core/clipboard_util_win.cpp
@@ -0,0 +1,115 @@
+// Copyright (C) 2007, 2008 Apple Inc. All rights reserved.
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include <string>
+
+#include "base/strings/stringprintf.h"
+#include "base/strings/string_util.h"
+
+// These functions are copied from ui/base/clipboard/clipboard_util_win.cc
+
+namespace QtWebEngineCore {
+
+// Helper method for converting from text/html to MS CF_HTML.
+// Documentation for the CF_HTML format is available at
+// http://msdn.microsoft.com/en-us/library/aa767917(VS.85).aspx
+// HtmlToCFHtml is based on similar method in
+// WebCore/platform/win/ClipboardUtilitiesWin.cpp.
+std::string HtmlToCFHtml(const std::string &html, const std::string &base_url)
+{
+    if (html.empty())
+        return std::string();
+
+#define MAX_DIGITS 10
+#define MAKE_NUMBER_FORMAT_1(digits) MAKE_NUMBER_FORMAT_2(digits)
+#define MAKE_NUMBER_FORMAT_2(digits) "%0" #digits "u"
+#define NUMBER_FORMAT MAKE_NUMBER_FORMAT_1(MAX_DIGITS)
+
+    static const char *header = "Version:0.9\r\n"
+                                "StartHTML:" NUMBER_FORMAT "\r\n"
+                                "EndHTML:" NUMBER_FORMAT "\r\n"
+                                "StartFragment:" NUMBER_FORMAT "\r\n"
+                                "EndFragment:" NUMBER_FORMAT "\r\n";
+    static const char *source_url_prefix = "SourceURL:";
+
+    static const char *start_markup = "<html>\r\n<body>\r\n<!--StartFragment-->";
+    static const char *end_markup = "<!--EndFragment-->\r\n</body>\r\n</html>";
+
+    // Calculate offsets
+    size_t start_html_offset = strlen(header) - strlen(NUMBER_FORMAT) * 4 + MAX_DIGITS * 4;
+    if (!base_url.empty()) {
+        start_html_offset += strlen(source_url_prefix) + base_url.length() + 2; // Add 2 for \r\n.
+    }
+    size_t start_fragment_offset = start_html_offset + strlen(start_markup);
+    size_t end_fragment_offset = start_fragment_offset + html.length();
+    size_t end_html_offset = end_fragment_offset + strlen(end_markup);
+
+    std::string result = base::StringPrintf(header, start_html_offset, end_html_offset,
+                                            start_fragment_offset, end_fragment_offset);
+    if (!base_url.empty()) {
+        result += source_url_prefix;
+        result += base_url;
+        result += "\r\n";
+    }
+    result += start_markup;
+    result += html;
+    result += end_markup;
+
+#undef MAX_DIGITS
+#undef MAKE_NUMBER_FORMAT_1
+#undef MAKE_NUMBER_FORMAT_2
+#undef NUMBER_FORMAT
+
+    return result;
+}
+
+void CFHtmlExtractMetadata(const std::string &cf_html, std::string *base_url, size_t *html_start,
+                           size_t *fragment_start, size_t *fragment_end)
+{
+    // Obtain base_url if present.
+    if (base_url) {
+        static constexpr char kSrcUrlStr[] = "SourceURL:";
+        size_t line_start = cf_html.find(kSrcUrlStr);
+        if (line_start != std::string::npos) {
+            size_t src_end = cf_html.find("\n", line_start);
+            size_t src_start = line_start + strlen(kSrcUrlStr);
+            if (src_end != std::string::npos && src_start != std::string::npos) {
+                *base_url = cf_html.substr(src_start, src_end - src_start);
+                base::TrimWhitespaceASCII(*base_url, base::TRIM_ALL, base_url);
+            }
+        }
+    }
+
+    // Find the markup between "<!--StartFragment-->" and "<!--EndFragment-->".
+    // If the comments cannot be found, like copying from OpenOffice Writer,
+    // we simply fall back to using StartFragment/EndFragment bytecount values
+    // to determine the fragment indexes.
+    std::string cf_html_lower = base::ToLowerASCII(cf_html);
+    size_t markup_start = cf_html_lower.find("<html", 0);
+    if (html_start) {
+        *html_start = markup_start;
+    }
+    size_t tag_start = cf_html.find("<!--StartFragment", markup_start);
+    if (tag_start == std::string::npos) {
+        static constexpr char kStartFragmentStr[] = "StartFragment:";
+        size_t start_fragment_start = cf_html.find(kStartFragmentStr);
+        if (start_fragment_start != std::string::npos) {
+            *fragment_start = static_cast<size_t>(
+                    atoi(cf_html.c_str() + start_fragment_start + strlen(kStartFragmentStr)));
+        }
+
+        static constexpr char kEndFragmentStr[] = "EndFragment:";
+        size_t end_fragment_start = cf_html.find(kEndFragmentStr);
+        if (end_fragment_start != std::string::npos) {
+            *fragment_end = static_cast<size_t>(
+                    atoi(cf_html.c_str() + end_fragment_start + strlen(kEndFragmentStr)));
+        }
+    } else {
+        *fragment_start = cf_html.find('>', tag_start) + 1;
+        size_t tag_end = cf_html.rfind("<!--EndFragment", std::string::npos);
+        *fragment_end = cf_html.rfind('<', tag_end);
+    }
+}
+
+} // namespace QtWebEngineCore