commit 2c48bfe41adf024728335c6b844621ea936042e0
Author: Bob Polis <rpb.polis@avans.nl>
Date:   Mon Mar 16 12:05:52 2020 +0100

    first commit

diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..46d1ed8
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,80 @@
+LIBNAME := $(shell basename $$(pwd))
+MAJOR := 1
+MINOR := 0.0
+
+UNAME_S := $(shell uname -s)
+
+ifeq ($(UNAME_S),Darwin)
+	LINKERNAME := $(LIBNAME).dylib
+	SONAME := $(LIBNAME).$(MAJOR).dylib
+	REALNAME := $(LINKERNAME)
+else
+	LINKERNAME := $(LIBNAME).so
+	SONAME := $(LINKERNAME).$(MAJOR)
+	REALNAME := $(SONAME).$(MINOR)
+endif
+
+PREFIX ?= /usr/local
+BINDIR ?= $(PREFIX)/bin
+LIBDIR ?= $(PREFIX)/lib
+INCLUDEDIR ?= $(PREFIX)/include
+DATADIR ?= $(PREFIX)/share
+MANDIR ?= $(DATADIR)/man
+
+SRCS := $(wildcard *.cpp)
+OBJS := $(subst .cpp,.o,$(SRCS))
+DEPS := $(subst .cpp,.d,$(SRCS))
+HDRS := $(filter-out $(LIBNAME).hpp,$(wildcard *.hpp))
+
+CXX ?= g++
+
+CXXFLAGS := $(CXXFLAGS) -Wshadow -Wall -Wpedantic -Wextra -g -fno-strict-aliasing -std=c++17 -fPIC
+ifeq ($(DEBUG),1)
+	CXXFLAGS += -D DEBUG -O0
+else
+	CXXFLAGS += -D NDEBUG -O3
+endif
+
+LDLIBS :=
+
+RM := /bin/rm -f
+INSTALL := /usr/bin/install -c
+
+all: $(REALNAME)
+
+$(REALNAME): $(OBJS) $(DEPS)
+ifeq ($(UNAME_S),Darwin)
+	$(CXX) -dynamiclib -o $(REALNAME) -current_version $(MAJOR) -compatibility_version $(MINOR) $(LDFLAGS) $(LDLIBS) $(OBJS)
+else
+	$(CXX) -g -shared -Wl,-soname,$(SONAME) -o $(REALNAME) $(LDFLAGS) $(LDLIBS) $(OBJS)
+endif
+
+%.o: %.cpp %.d Makefile
+	$(CXX) $(CXXFLAGS) -MMD -MP -MT $@ -MF $*.d -c $<
+
+-include *.d
+
+%.d: ;
+
+$(LIBNAME).hpp: $(HDRS)
+	@echo updating $(LIBNAME).hpp
+	@cp /dev/null $(LIBNAME).hpp
+	@for h in $(HDRS); \
+	do \
+		cat $$h >> $(LIBNAME).hpp; \
+	done	
+
+.PHONY: clean install
+
+clean:
+	$(RM) $(OBJS) $(DEPS) $(REALNAME) $(LIBNAME).hpp
+
+install: $(REALNAME) $(LIBNAME).hpp
+	$(INSTALL) -m 644 $(REALNAME) $(LIBDIR)
+	$(INSTALL) -m 644 $(LIBNAME).hpp $(INCLUDEDIR)
+ifeq ($(UNAME_S),Darwin)
+	cd $(LIBDIR) && ln -sf $(REALNAME) $(SONAME)
+else
+	ldconfig
+	cd $(LIBDIR) && ln -sf $(SONAME) $(LINKERNAME)
+endif
diff --git a/throw.cpp b/throw.cpp
new file mode 100644
index 0000000..451e81d
--- /dev/null
+++ b/throw.cpp
@@ -0,0 +1,53 @@
+// throw macros for OS X and other POSIX systems
+// adapted for Windows as well, november 2014
+// copyright © 2002-2014 Bob Polis
+
+#include <string>
+#include <sstream>
+#include <iostream>
+#include <stdexcept>
+#include <system_error>
+#include "throw.hpp"
+
+using namespace std;
+
+static string combine_message_elements(const char* file, unsigned int line, const char* user_message, const char* sys_message)
+{
+    ostringstream msg;
+    string f {file};
+    msg << sys_message << " (" << f.substr(f.rfind('/') + 1) << ":" << line << ")";
+    if (user_message) {
+        msg << ", " << user_message;
+    }
+    return msg.str();
+}
+
+void __throw_if_min1(int x, const char* file, unsigned int line, const char* message)
+{
+    if (x == -1) {
+        error_code ec {errno, system_category()};
+        ostringstream ec_str;
+        ec_str << "system error " <<  ec.value() << ": " << ec.message();
+        string msg {combine_message_elements(file, line, message, ec_str.str().c_str())};
+		throw system_error {ec, msg};
+    }
+}
+
+void __throw_if_null(const void* p, const char* file, unsigned int line, const char* message)
+{
+    if (p == nullptr) {
+        string msg {combine_message_elements(file, line, message, "null pointer exception")};
+		throw runtime_error {msg};
+    }
+}
+
+void __throw_if_err(int err, const char* file, unsigned int line, const char* message)
+{
+	if (err != 0) {
+		error_code ec {err, system_category()};
+		ostringstream ec_str;
+		ec_str << "error " <<  err;
+		string msg {combine_message_elements(file, line, message, ec_str.str().c_str())};
+		throw system_error {ec, msg};
+	}
+}
diff --git a/throw.hpp b/throw.hpp
new file mode 100644
index 0000000..06802b6
--- /dev/null
+++ b/throw.hpp
@@ -0,0 +1,21 @@
+// throw macros for OS X and other POSIX systems
+// adapted for Windows as well, november 2014
+// copyright © 2002-2014 Bob Polis
+
+#ifndef __throw__
+#define __throw__
+
+// don't call these yourself; use the macros below instead
+void __throw_if_min1(int x, const char* file, unsigned int line, const char* message = nullptr);
+void __throw_if_null(const void* p, const char* file, unsigned int line, const char* message = nullptr);
+void __throw_if_err(int err, const char* file, unsigned int line, const char* message = nullptr);
+
+#define throw_if_min1(___x___)					__throw_if_min1((___x___), __FILE__, __LINE__)
+#define throw_if_null(__ptr__)					__throw_if_null((__ptr__), __FILE__, __LINE__)
+#define throw_if_err(__err__)					__throw_if_err((__err__), __FILE__, __LINE__)
+
+#define throw_if_min1_msg(___x___, ___msg___)	__throw_if_min1((___x___), __FILE__, __LINE__, ___msg___)
+#define throw_if_null_msg(__ptr__, ___msg___)	__throw_if_null((__ptr__), __FILE__, __LINE__, ___msg___)
+#define throw_if_err_msg(__err__, ___msg___)		__throw_if_err((__err__), __FILE__, __LINE__, ___msg___)
+
+#endif /* defined(__throw__) */