libcody: Make it buildable by C++11 to C++26

The following builds with -std=c++11 and c++14 and c++17 and c++20 and c++23
and c++26.

I see the u8 string literals are mixed e.g. with strerror, so in
-fexec-charset=IBM1047 there will still be garbage, so am not 100% sure if
the u8 literals everywhere are worth it either.

2025-11-21  Jakub Jelinek  <jakub@redhat.com>

	* cody.hh (S2C): For __cpp_char8_t >= 201811 use char8_t instead of
	char in argument type.
	(MessageBuffer::Space): Revert 2025-11-15 change.
	(MessageBuffer::Append): For __cpp_char8_t >= 201811 add overload
	with char8_t const * type of first argument.
	(Packet::Packet): Similarly for first argument.
	* client.cc (CommunicationError, Client::ProcessResponse,
	Client::Connect, ConnectResponse, PathnameResponse, OKResponse,
	IncludeTranslateResponse): Cast u8 string literals to (const char *)
	where needed.
	* server.cc (Server::ProcessRequests, ConnectRequest): Likewise.
This commit is contained in:
Jakub Jelinek 2025-11-21 16:25:58 +01:00 committed by Jakub Jelinek
parent 9dff0355c7
commit 07a767c7a5
3 changed files with 55 additions and 35 deletions

View File

@ -97,7 +97,7 @@ int Client::CommunicateWithServer ()
static Packet CommunicationError (int err)
{
std::string e {u8"communication error:"};
std::string e {(const char *) u8"communication error:"};
e.append (strerror (err));
return Packet (Client::PC_ERROR, std::move (e));
@ -110,33 +110,34 @@ Packet Client::ProcessResponse (std::vector<std::string> &words,
{
if (e == EINVAL)
{
std::string msg (u8"malformed string '");
std::string msg ((const char *) u8"malformed string '");
msg.append (words[0]);
msg.append (u8"'");
msg.append ((const char *) u8"'");
return Packet (Client::PC_ERROR, std::move (msg));
}
else
return Packet (Client::PC_ERROR, u8"missing response");
return Packet (Client::PC_ERROR, (const char *) u8"missing response");
}
Assert (!words.empty ());
if (words[0] == u8"ERROR")
if (words[0] == (const char *) u8"ERROR")
return Packet (Client::PC_ERROR,
words.size () == 2 ? words[1]: u8"malformed error response");
words.size () == 2 ? words[1]
: (const char *) u8"malformed error response");
if (isLast && !read.IsAtEnd ())
return Packet (Client::PC_ERROR,
std::string (u8"unexpected extra response"));
std::string ((const char *) u8"unexpected extra response"));
Assert (code < Detail::RC_HWM);
Packet result (responseTable[code] (words));
result.SetRequest (code);
if (result.GetCode () == Client::PC_ERROR && result.GetString ().empty ())
{
std::string msg {u8"malformed response '"};
std::string msg {(const char *) u8"malformed response '"};
read.LexedLine (msg);
msg.append (u8"'");
msg.append ((const char *) u8"'");
result.GetString () = std::move (msg);
}
else if (result.GetCode () == Client::PC_CONNECT)
@ -199,7 +200,7 @@ Packet Client::Connect (char const *agent, char const *ident,
size_t alen, size_t ilen)
{
write.BeginLine ();
write.AppendWord (u8"HELLO");
write.AppendWord ((const char *) u8"HELLO");
write.AppendInteger (Version);
write.AppendWord (agent, true, alen);
write.AppendWord (ident, true, ilen);
@ -211,7 +212,8 @@ Packet Client::Connect (char const *agent, char const *ident,
// HELLO $version $agent [$flags]
Packet ConnectResponse (std::vector<std::string> &words)
{
if (words[0] == u8"HELLO" && (words.size () == 3 || words.size () == 4))
if (words[0] == (const char *) u8"HELLO"
&& (words.size () == 3 || words.size () == 4))
{
char *eptr;
unsigned long val = strtoul (words[1].c_str (), &eptr, 10);
@ -247,7 +249,7 @@ Packet Client::ModuleRepo ()
// PATHNAME $dir | ERROR
Packet PathnameResponse (std::vector<std::string> &words)
{
if (words[0] == u8"PATHNAME" && words.size () == 2)
if (words[0] == (const char *) u8"PATHNAME" && words.size () == 2)
return Packet (Client::PC_PATHNAME, std::move (words[1]));
return Packet (Client::PC_ERROR, u8"");
@ -256,7 +258,7 @@ Packet PathnameResponse (std::vector<std::string> &words)
// OK or ERROR
Packet OKResponse (std::vector<std::string> &words)
{
if (words[0] == u8"OK")
if (words[0] == (const char *) u8"OK")
return Packet (Client::PC_OK);
else
return Packet (Client::PC_ERROR,
@ -319,11 +321,11 @@ Packet Client::IncludeTranslate (char const *include, Flags flags, size_t ilen)
// PATHNAME $cmifile
Packet IncludeTranslateResponse (std::vector<std::string> &words)
{
if (words[0] == u8"BOOL" && words.size () == 2)
if (words[0] == (const char *) u8"BOOL" && words.size () == 2)
{
if (words[1] == u8"FALSE")
return Packet (Client::PC_BOOL, 0);
else if (words[1] == u8"TRUE")
if (words[1] == (const char *) u8"FALSE")
return Packet (Client::PC_BOOL);
else if (words[1] == (const char *) u8"TRUE")
return Packet (Client::PC_BOOL, 1);
else
return Packet (Client::PC_ERROR, u8"");

View File

@ -47,12 +47,21 @@ namespace Detail {
// C++11 doesn't have utf8 character literals :(
#if __cpp_char8_t >= 201811
template<unsigned I>
constexpr char S2C (char8_t const (&s)[I])
{
static_assert (I == 2, "only single octet strings may be converted");
return s[0];
}
#else
template<unsigned I>
constexpr char S2C (char const (&s)[I])
{
static_assert (I == 2, "only single octet strings may be converted");
return s[0];
}
#endif
/// Internal buffering class. Used to concatenate outgoing messages
/// and Lex incoming ones.
@ -110,11 +119,7 @@ public:
/// Add whitespace word separator. Multiple adjacent whitespace is fine.
void Space ()
{
#if __cpp_unicode_characters >= 201411
Append ((char) u8' ');
#else
Append (Detail::S2C(u8" "));
#endif
}
public:
@ -127,6 +132,13 @@ public:
Space ();
Append (str, maybe_quote, len);
}
#if __cpp_char8_t >= 201811
void AppendWord (char8_t const *str, bool maybe_quote = false,
size_t len = ~size_t (0))
{
AppendWord ((const char *) str, maybe_quote, len);
}
#endif
/// Add a word as with AppendWord
/// @param str the string to append
/// @param maybe_quote string might need quoting, as for Append
@ -268,6 +280,12 @@ public:
: string (s), cat (STRING), code (c)
{
}
#if __cpp_char8_t >= 201811
Packet (unsigned c, const char8_t *s)
: string ((const char *) s), cat (STRING), code (c)
{
}
#endif
Packet (unsigned c, std::vector<std::string> &&v)
: vector (std::move (v)), cat (VECTOR), code (c)
{

View File

@ -36,12 +36,12 @@ static RequestPair
const requestTable[Detail::RC_HWM] =
{
// Same order as enum RequestCode
RequestPair {u8"HELLO", nullptr},
RequestPair {u8"MODULE-REPO", ModuleRepoRequest},
RequestPair {u8"MODULE-EXPORT", ModuleExportRequest},
RequestPair {u8"MODULE-IMPORT", ModuleImportRequest},
RequestPair {u8"MODULE-COMPILED", ModuleCompiledRequest},
RequestPair {u8"INCLUDE-TRANSLATE", IncludeTranslateRequest},
RequestPair {(const char *) u8"HELLO", nullptr},
RequestPair {(const char *) u8"MODULE-REPO", ModuleRepoRequest},
RequestPair {(const char *) u8"MODULE-EXPORT", ModuleExportRequest},
RequestPair {(const char *) u8"MODULE-IMPORT", ModuleImportRequest},
RequestPair {(const char *) u8"MODULE-COMPILED", ModuleCompiledRequest},
RequestPair {(const char *) u8"INCLUDE-TRANSLATE", IncludeTranslateRequest},
};
}
@ -135,21 +135,21 @@ void Server::ProcessRequests (void)
std::string msg;
if (err > 0)
msg = u8"error processing '";
msg = (const char *) u8"error processing '";
else if (ix >= Detail::RC_HWM)
msg = u8"unrecognized '";
msg = (const char *) u8"unrecognized '";
else if (IsConnected () && ix == Detail::RC_CONNECT)
msg = u8"already connected '";
msg = (const char *) u8"already connected '";
else if (!IsConnected () && ix != Detail::RC_CONNECT)
msg = u8"not connected '";
msg = (const char *) u8"not connected '";
else
msg = u8"malformed '";
msg = (const char *) u8"malformed '";
read.LexedLine (msg);
msg.append (u8"'");
msg.append ((const char *) u8"'");
if (err > 0)
{
msg.append (u8" ");
msg.append ((const char *) u8" ");
msg.append (strerror (err));
}
resolver->ErrorResponse (this, std::move (msg));
@ -176,7 +176,7 @@ Resolver *ConnectRequest (Server *s, Resolver *r,
return nullptr;
if (words.size () == 3)
words.emplace_back (u8"");
words.emplace_back ((const char *) u8"");
unsigned version = ParseUnsigned (words[1]);
if (version == ~0u)
return nullptr;