70 lines
2 KiB
C++
70 lines
2 KiB
C++
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#include <fc/rpc/cli.hpp>
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#include <iostream>
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#ifndef WIN32
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#include <unistd.h>
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#endif
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#ifdef HAVE_READLINE
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# include <readline/readline.h>
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# include <readline/history.h>
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// I don't know exactly what version of readline we need. I know the 4.2 version that ships on some macs is
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// missing some functions we require. We're developing against 6.3, but probably anything in the 6.x
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// series is fine
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# if RL_VERSION_MAJOR < 6
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# ifdef _MSC_VER
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# pragma message("You have an old version of readline installed that might not support some of the features we need")
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# pragma message("Readline support will not be compiled in")
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# else
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# warning "You have an old version of readline installed that might not support some of the features we need"
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# warning "Readline support will not be compiled in"
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# endif
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# undef HAVE_READLINE
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# endif
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#endif
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namespace fc { namespace rpc {
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void cli::getline(
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const fc::string& prompt,
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fc::string& line
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)
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{
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// getting file descriptor for C++ streams is near impossible
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// so we just assume it's the same as the C stream...
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#ifdef HAVE_READLINE
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#ifndef WIN32
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if( isatty( fileno( stdin ) ) )
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#else
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// it's implied by
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// https://msdn.microsoft.com/en-us/library/f4s0ddew.aspx
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// that this is the proper way to do this on Windows, but I have
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// no access to a Windows compiler and thus,
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// no idea if this actually works
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if( _isatty( _fileno( stdin ) ) )
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#endif
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{
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char* line_read = nullptr;
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std::cout.flush(); //readline doesn't use cin, so we must manually flush _out
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line_read = readline(prompt.c_str());
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if( line_read == nullptr )
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FC_THROW_EXCEPTION( fc::eof_exception, "" );
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if( *line_read )
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add_history(line_read);
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line = line_read;
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free(line_read);
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}
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else
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#endif
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{
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std::cout << prompt;
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// sync_call( cin_thread, [&](){ std::getline( *input_stream, line ); }, "getline");
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fc::getline( fc::cin, line );
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return;
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}
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}
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} }
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