dep: Add rapidyaml

dep/rapidyaml/src/c4/format.cpp

@@ -0,0 +1,60 @@
+#include "c4/format.hpp"
+
+#include <memory> // for std::align
+
+#ifdef __clang__
+#   pragma clang diagnostic push
+#   pragma clang diagnostic ignored "-Wformat-nonliteral"
+#   pragma clang diagnostic ignored "-Wold-style-cast"
+#elif defined(__GNUC__)
+#   pragma GCC diagnostic push
+#   pragma GCC diagnostic ignored "-Wformat-nonliteral"
+#   pragma GCC diagnostic ignored "-Wold-style-cast"
+#endif
+
+namespace c4 {
+
+
+size_t to_chars(substr buf, fmt::const_raw_wrapper r)
+{
+    void * vptr = buf.str;
+    size_t space = buf.len;
+    auto ptr = (decltype(buf.str)) std::align(r.alignment, r.len, vptr, space);
+    if(ptr == nullptr)
+    {
+        // if it was not possible to align, return a conservative estimate
+        // of the required space
+        return r.alignment + r.len;
+    }
+    C4_CHECK(ptr >= buf.begin() && ptr <= buf.end());
+    size_t sz = static_cast<size_t>(ptr - buf.str) + r.len;
+    if(sz <= buf.len)
+    {
+        memcpy(ptr, r.buf, r.len);
+    }
+    return sz;
+}
+
+
+bool from_chars(csubstr buf, fmt::raw_wrapper *r)
+{
+    C4_SUPPRESS_WARNING_GCC_WITH_PUSH("-Wcast-qual")
+    void * vptr = (void*)buf.str;
+    C4_SUPPRESS_WARNING_GCC_POP
+    size_t space = buf.len;
+    auto ptr = (decltype(buf.str)) std::align(r->alignment, r->len, vptr, space);
+    C4_CHECK(ptr != nullptr);
+    C4_CHECK(ptr >= buf.begin() && ptr <= buf.end());
+    //size_t dim = (ptr - buf.str) + r->len;
+    memcpy(r->buf, ptr, r->len);
+    return true;
+}
+
+
+} // namespace c4
+
+#ifdef __clang__
+#   pragma clang diagnostic pop
+#elif defined(__GNUC__)
+#   pragma GCC diagnostic pop
+#endif