Jan-Espen Oversand
2483645603
Cpprestsdk is using a lot of unsigned types for C++ streams, which apparently is fine with MSVC/win32, with gcc at least up until some point, but does not work at all with the latest llvm versions. I've put some effort into not going for anything that pollutes the std namespace with anything, which I don't think is ok at all with a library. PR: 287706 Reported by: Jan-Espen Oversand <sigsegv@radiotube.org> (maintainer)
106 lines
3.3 KiB
C++
106 lines
3.3 KiB
C++
--- include/cpprest/details/char_traits.h.orig 2025-07-02 14:23:43 UTC
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+++ include/cpprest/details/char_traits.h
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@@ -0,0 +1,102 @@
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+//
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+// Created by sigsegv on 6/28/25.
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+//
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+
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+#ifndef CPPRESTSDK_ROOT_CHAR_TRAITS_H
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+#define CPPRESTSDK_ROOT_CHAR_TRAITS_H
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+
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+#include <type_traits>
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+#include <string>
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+
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+namespace utility {
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+
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+namespace detail {
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+
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+template <typename T> struct IntTypeFor {
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+ typedef typename std::conditional<std::is_unsigned<T>::value, unsigned long long int, long long int>::type type;
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+};
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+template <> struct IntTypeFor<char> {
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+ typedef typename std::char_traits<char>::int_type type;
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+};
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+template <> struct IntTypeFor<unsigned char> {
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+ typedef typename std::make_unsigned<typename std::char_traits<char>::int_type>::type type;
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+};
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+
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+template <typename T> class DetailCharTraits
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+{
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+public:
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+ using char_type = T;
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+ using int_type = typename IntTypeFor<T>::type;
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+ using off_type = std::streamoff;
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+ using pos_type = std::streampos;
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+ using state_type = mbstate_t;
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+
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+ static void assign(char_type& r, const char_type& a) noexcept { r = a; }
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+ static char_type to_char_type(int_type c) noexcept { return char_type(c); }
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+ static int_type to_int_type(char_type c) noexcept { return c; }
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+ static bool eq(char_type a, char_type b) noexcept { return a == b; }
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+ static bool lt(char_type a, char_type b) noexcept { return a < b; }
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+ static int compare(const char_type* s1,const char_type* s2,size_t n){
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+ for (; n--; ++s1, ++s2) {
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+ if (!eq(*s1, *s2))
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+ return lt(*s1,*s2)?-1:1;
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+ }
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+ return 0;
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+ }
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+ static size_t length(const char_type* s){
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+ const char_type* p = s;
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+ while (*p)
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+ ++p;
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+ return size_t(p - s);
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+ }
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+ static const char_type* find(const char_type* s,size_t n,const char_type& a){
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+ for (; n--; ++s)
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+ {
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+ if (eq(*s, a))
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+ return s;
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+ return nullptr;
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+ }
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+ }
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+ static char_type* move (char_type* r,const char_type* s,size_t n){
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+ return (char_type*)memmove(r, s, n * sizeof(char_type));
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+ }
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+ static char_type* copy (char_type* r,const char_type* s,size_t n){
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+ return (char_type*)memcpy (r, s, n * sizeof(char_type));
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+ }
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+ static char_type* assign(char_type* r,size_t n,char_type a){
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+ if (sizeof(char_type) == 1)
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+ {
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+ return (char_type*)memset(r, a, n);
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+ }
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+ else
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+ {
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+ for (char_type *s = r; n--; ++s)
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+ {
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+ *s = a;
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+ }
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+ }
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+ }
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+ static int_type eof() noexcept { return ~0u; }
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+ static int_type not_eof(int_type c) noexcept { return c == eof() ? 0 : c; }
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+};
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+
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+template <typename T, typename = bool> struct CanUseStdCharTraits : public std::false_type
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+{
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+public:
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+ typedef DetailCharTraits<T> TraitsType;
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+};
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+
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+template <typename T> struct CanUseStdCharTraits<T, decltype(std::char_traits<T>::eq(std::declval<T>(), std::declval<T>()))> : public std::true_type
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+{
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+public:
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+ typedef std::char_traits<T> TraitsType;
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+};
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+
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+}
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+
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+template <typename T> struct CanUseStdCharTraits : detail::CanUseStdCharTraits<typename std::remove_const<typename std::remove_reference<T>::type>::type> {
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+};
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+
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+}
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+
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+#endif // CPPRESTSDK_ROOT_CHAR_TRAITS_H
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