Dbjdbj no boost

cli/cliasyncsession.h

@@ -32,21 +32,21 @@
 
 #include <string>
 #include <boost/asio.hpp>
-#include "cli.h" // CliSession
+#include "cli.h" // cli_session_type
 
 namespace cli
 {
 
-class CliAsyncSession : public CliSession
+class cli_async_session : public cli_session_type
 {
 public:
-    CliAsyncSession( boost::asio::io_service& ios, Cli& cli ) :
-        CliSession(cli, std::cout, 1),
+    cli_async_session( boost::asio::io_service& ios, Cli& cli ) :
+        cli_session_type(cli, std::cout, 1),
         input( ios, ::dup( STDIN_FILENO ) )        
     {
         Read();
     }
-    ~CliAsyncSession()
+    ~cli_async_session()
     {
         input.close();
     }

cli/clifilesession.h

@@ -33,17 +33,17 @@
 #include <string>
 #include <iostream>
 #include <stdexcept> // std::invalid_argument
-#include "cli.h" // CliSession
+#include "cli.h" // cli_session_type
 
 namespace cli
 {
 
-class CliFileSession : public CliSession
+class cli_file_session : public cli_session_type
 {
 public:
 	/// @throw std::invalid_argument if @c _in or @c out are invalid streams
-    CliFileSession(Cli& cli, std::istream& _in=std::cin, std::ostream& out=std::cout) :
-        CliSession(cli, out, 1),
+    cli_file_session(cli_type& cli, std::istream& _in=std::cin, std::ostream& out=std::cout) :
+        cli_session_type(cli, out, 1),
         exit(false),
         in(_in)
     {

cli/clilocalsession.h

@@ -30,20 +30,22 @@
 #ifndef CLILOCALSESSION_H_
 #define CLILOCALSESSION_H_
 
+// dbj added
+#define _SILENCE_ALL_CXX17_DEPRECATION_WARNINGS
 #include <boost/asio.hpp>
 #include "keyboard.h"
 #include "inputhandler.h"
-#include "cli.h" // CliSession
+#include "cli.h" // cli_session_type
 
 namespace cli
 {
 
-class CliLocalTerminalSession : public CliSession
+class cli_local_terminal_session : public cli_session_type
 {
 public:
 
-    CliLocalTerminalSession(Cli& _cli, boost::asio::io_service& ios, std::ostream& _out, std::size_t historySize = 100) :
-        CliSession(_cli, _out, historySize),
+    cli_local_terminal_session(cli_type& _cli, boost::asio::io_service& ios, std::ostream& _out, std::size_t historySize = 100) :
+        cli_session_type(_cli, _out, historySize),
         kb(ios),
         ih(*this, kb)
     {
@@ -52,10 +54,10 @@ class CliLocalTerminalSession : public CliSession
 
 private:
     Keyboard kb;
-    InputHandler ih;
+    input_handler ih;
 };
 
-using CliLocalSession = CliLocalTerminalSession;
+using cli_local_session = cli_local_terminal_session;
 
 } // namespace cli
 

cli/dbj/LICENCE.h

@@ -0,0 +1,18 @@
+#pragma once
+/*
+Copyright 2017,2018,2019 by [email protected]
+
+Licensed under the GNU GPL License, Version 3.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License in the file LICENSE enclosed in
+this project.
+
+https://www.gnu.org/licenses/gpl-3.0.html
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+

cli/dbj/dbj_algo.h

@@ -0,0 +1,85 @@
+#pragma once
+#include "LICENCE.h"
+
+#if __cplusplus < 201703
+#include "string_veiw.h"
+#endif
+
+#include <algorithm>
+
+namespace dbj {
+	namespace algorithm {
+
+		// NOTE: wherever possible I am using string_view
+#if __cplusplus < 201703
+		using bpstd::string_view ; // back-port std project
+#endif
+
+	using namespace std;
+	using string_vector = vector<string>;
+
+		// synopsis: 
+		// dbj::algorithm::starts_with(name, line)
+		// returns true if line strate with name
+		// NOTE: this should work with C++11 also
+		inline bool starts_with(string_view  prefix, string_view text)
+		{
+			if ((prefix.size() > text.size())) return false;
+			return (
+				std::equal(prefix.begin(), prefix.end(), text.begin())
+				);
+		}
+
+		namespace {
+			// anonymous ns makes this static in essence
+			char const * white_space = " \t\n\r\f\v";
+			// I had to do this since inline globals have not
+			// appeared before C++17
+		}
+		// dbj note: string_view remove_prexif and removse_suffix are 
+		// simplifying and speeding up things here considerably
+		inline string trim_left(string_view text, char const * t = white_space) {
+			text.remove_prefix(text.find_first_not_of(t));
+			return text.data();
+		}
+
+		inline string trim_right(string_view text, char const * t = white_space) {
+			text.remove_suffix(text.find_last_not_of(t) + 1);
+			return text.data();
+		}
+
+		inline string trim(string_view text, char const * t = white_space) {
+
+			return trim_left(trim_right(text, t), t);
+		}
+
+		// https://github.com/fenbf/StringViewTests/blob/master/StringViewTest.cpp
+		// works on pointers rather than iterators
+		// code by JFT
+		// DBJ: changed argument types to be string_view, not string
+		// now this is even faster
+		string_vector fast_string_split(
+			const string_view & str, 
+			const string_view & delims = " \t\v\n\r\f"
+		)
+		{
+			string_vector output;
+			//output.reserve(str.size() / 2);
+
+			for (
+				auto first = str.data(), second = str.data(), last = first + str.size(); 
+				second != last && first != last; 
+				first = second + 1) 
+			{
+				second = std::find_first_of(
+					first, last, std::cbegin(delims), std::cend(delims)
+				);
+
+				if (first != second)
+					output.emplace_back(first, second);
+			}
+
+			return output;
+		}
+	}
+} // dbj

cli/dbj/dbj_buf.h

@@ -0,0 +1,196 @@
+#pragma once
+
+#define DBJ_BUFFER_TESTING
+
+#include "LICENCE.h"
+#include "dbj_insider.h"
+
+#include <system_error>
+#include <cassert>
+#include <memory>
+#include <string_view>
+#include <type_traits>
+#include <cstdint>
+#include <cstddef>
+#include <cstring>
+
+// 2019-01-30	[email protected]	created
+//
+// char runtime dynamic buffer type
+// faster and lighter vs the usual suspects: string and vector
+// note: this is part of the core , thus we will try and absolutely minimise
+// the dependancies  thus we will sometimes
+// reimplement things here which perhaps exist in other projects
+//
+// note: this is not C++17 way of doing things
+// so that good legacy code can enjoy this too
+
+namespace dbj {
+		namespace buf {
+#if __cplusplus < 201703
+		using bpstd::string_view; // back-port std project
+#endif
+		// plenty of space -- 65535
+		// in posix terms BUFSIZ * 2 * 64 aka 64KB
+		constexpr std::size_t max_length = UINT16_MAX;
+
+		namespace {
+			using namespace ::dbj::util;
+			using inside_1_and_max =
+				insider<size_t, 1,
+				::dbj::buf::max_length
+				, insider_error_code_throw_policy
+				>;
+		}
+
+		struct unique_arr_ptr final
+		{
+			using value_type = char;
+			using type = std::unique_ptr<char[]>;
+			using ref_type = type & ;
+		};
+
+		using buff_type		= typename unique_arr_ptr::type;
+		using buff_ref_type = typename unique_arr_ptr::ref_type;
+
+		// always use this function to make_buff  fresh buff_type-es!
+		DBJ_NODISCARD  inline buff_type make_buff (inside_1_and_max size_) noexcept
+		{
+			return std::make_unique<char[]>(size_ + 1);
+		}
+
+		DBJ_NODISCARD  inline auto length(buff_ref_type buf_ref_)
+			noexcept -> inside_1_and_max
+		{
+			return std::strlen(buf_ref_.get());
+		}
+
+		DBJ_NODISCARD  inline buff_type assign(char const * first_, char const * last_) noexcept
+		{
+			assert( first_ && last_ );
+			size_t N = std::distance( first_, last_ );
+			assert(N > 0);
+			buff_type sp_ = make_buff(N);
+			auto * rez_ =  std::copy(first_, last_, sp_.get() );
+			assert(rez_);
+			return sp_; // the move
+		}
+
+		/*
+		make_buff  from array of char's
+		*/
+		template<size_t N>
+		DBJ_NODISCARD  inline auto assign(const char(&charr)[N]) noexcept -> buff_type
+		{
+			assert(N > 0);
+			buff_type sp_ = make_buff (N);
+			void * rez_ = ::memcpy(sp_.get(), charr, N);
+			assert(rez_);
+			return sp_; // the move
+		}
+
+		/* make_buff  buff_type from string_view */
+		DBJ_NODISCARD  inline  auto	assign	( string_view sv_) noexcept	-> buff_type
+		{
+			assert(!sv_.empty());
+			// is this naive?
+			// should I use strnlen() ?
+			inside_1_and_max N = sv_.size();
+			buff_type sp_ = make_buff  (N);
+			void * rez_ = ::memcpy(sp_.get(), sv_.data(), N);
+			assert(rez_);
+			return sp_;
+		}
+
+		/*
+		make_buff  buff_type<C> from buff_type<C>
+		this is clever since we do not deal 
+		with C *, but... can we rely on the the caller
+		making a properly zero terminated string in there
+		so that strlen will work?
+		*/
+		DBJ_NODISCARD  inline auto	assign (buff_ref_type buf_ref_) noexcept -> buff_type
+		{
+			buff_type & from_ = buf_ref_;
+			assert(from_);
+			inside_1_and_max N = ::dbj::buf::length (buf_ref_);
+			assert(N > 1);
+			buff_type sp_ = ::dbj::buf::make_buff  (N);
+			assert(sp_);
+			void * rez_ = ::memcpy(sp_.get(), buf_ref_.get(), N);
+			assert(rez_);
+			return sp_;
+		}
+
+		/*
+		assign array to instance of unique_ptr<T[]>
+		note: "any" type will do as long as std::unique_ptr
+		will accept it
+		*/
+		template<typename C, size_t N>
+		inline auto	assign ( std::unique_ptr<C[]> & sp_, const C(&arr)[N]) noexcept -> std::unique_ptr<C[]> &
+		{
+			// sp_.release();
+			sp_ = std::make_unique<C[]>(N + 1);
+			assert(sp_);
+			void * rez_ = ::memcpy(sp_.get(), arr, N);
+			assert(rez_);
+			return sp_;
+		}
+
+		// do not try this at home. ever.
+		extern "C"	inline void	secure_reset(void *s, size_t n) noexcept
+		{
+			volatile char *p = (char *)s;
+			while (n--) *p++ = 0;
+		}
+
+		// dangerously low, but it works
+		inline  buff_ref_type fill( buff_ref_type buff_, char val_ , size_t N = 0 ) noexcept
+		{
+			if (!N) N = ::dbj::buf::length(buff_);
+			::std::fill(buff_.get(), buff_.get() + N, val_ );
+			return buff_;
+		}
+
+		inline std::ostream & operator << (	std::ostream & os, buff_ref_type the_buffer_ )
+		{
+			return os << the_buffer_.get();
+		}
+
+	} // buf
+} // dbj
+
+#ifdef DBJ_BUFFER_TESTING
+#define TU(x) std::cout << "\nExpression: '" << (#x) << "'\n\tResult: '" << (x) << "'\n"
+#include <iostream>
+
+namespace {
+	inline bool dbj_testing_dbj_unique_ptr_buffer() 
+	{
+		using namespace ::dbj::buf;
+		// 1
+		{
+			TU( make_buff (BUFSIZ) );
+			TU( assign("string literall") );
+			TU( assign(std::string("std::string")) );
+			TU( assign(dbj::string_view("std::stringview")) );
+
+		}
+		// 2
+		{
+			buff_type		 buff_1 = make_buff(0xF);
+			// buff_type is a smart pointer 
+			// it does not know its own safe length
+			TU( fill( buff_1  , '*', 0xF ) ) ;
+		}
+		return true;
+	} // testing_dbj_buffer
+
+	static auto dbj_testing_dbj_buffer_result 
+		= dbj_testing_dbj_unique_ptr_buffer();
+}
+
+#endif // DBJ_BUFFER_TESTING
+#undef TU
+#undef DBJ_BUFFER_TESTING