Update contrib/restricted/boost/locale to 1.88.0

commit_hash:87b595328ea79c6ba38cb973580804486ca4a3ff

1 files changed, 60 insertions, 0 deletions

diff --git a/contrib/restricted/boost/locale/src/util/encoding.cpp b/contrib/restricted/boost/locale/src/util/encoding.cpp
new file mode 100644
index 00000000000..8b893f1c4a0
--- /dev/null
+++ b/contrib/restricted/boost/locale/src/util/encoding.cpp
@@ -0,0 +1,60 @@
+//
+// Copyright (c) 2009-2011 Artyom Beilis (Tonkikh)
+// Copyright (c) 2022-2025 Alexander Grund
+//
+// Distributed under the Boost Software License, Version 1.0.
+// https://www.boost.org/LICENSE_1_0.txt
+
+#include "encoding.hpp"
+#include <boost/locale/util/string.hpp>
+#if BOOST_LOCALE_USE_WIN32_API
+#    include "win_codepages.hpp"
+#    ifndef NOMINMAX
+#        define NOMINMAX
+#    endif
+#    include <windows.h>
+#endif
+#include <algorithm>
+#include <cstring>
+
+namespace boost { namespace locale { namespace util {
+    std::string normalize_encoding(const core::string_view encoding)
+    {
+        std::string result;
+        result.reserve(encoding.length());
+        for(char c : encoding) {
+            if(is_lower_ascii(c) || is_numeric_ascii(c))
+                result += c;
+            else if(is_upper_ascii(c))
+                result += char(c - 'A' + 'a');
+        }
+        return result;
+    }
+
+#if BOOST_LOCALE_USE_WIN32_API
+    static int normalized_encoding_to_windows_codepage(const std::string& encoding)
+    {
+        windows_encoding* end = std::end(all_windows_encodings);
+
+        windows_encoding* ptr = std::lower_bound(all_windows_encodings, end, encoding.c_str());
+        while(ptr != end && ptr->name == encoding) {
+            if(ptr->was_tested)
+                return ptr->codepage;
+            else if(IsValidCodePage(ptr->codepage)) {
+                // the thread safety is not an issue, maximum
+                // it would be checked more then once
+                ptr->was_tested = 1;
+                return ptr->codepage;
+            } else
+                ++ptr;
+        }
+        return -1;
+    }
+
+    int encoding_to_windows_codepage(const core::string_view encoding)
+    {
+        return normalized_encoding_to_windows_codepage(normalize_encoding(encoding));
+    }
+
+#endif
+}}} // namespace boost::locale::util