Initial commit

Makefile

@@ -0,0 +1,16 @@
+LUA_VERSION=5.2
+INCLUDES=-I/usr/lib/lua${LUA_VERSION}
+CXX=g++
+CFLAGS=-fPIC
+LIBS=-lqalculate
+OUTPUT=libqalculate.so
+
+all: qalculator.o 
+	${CXX} ${LIBS} -shared $< -o libqalculator.so
+
+qalculator.o: qalculator.cpp
+	${CXX} ${INCLUDES} -c $< -o $@ ${CFLAGS}
+
+clean:
+	${RM} libqalculator.so qalculator.o
+

qalculator.cpp

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+#include <lua.hpp>
+#include <libqalculate/qalculate.h>
+#include <string>
+
+const char* qalculate(const char* input, bool exact_mode) {
+    Calculator* c = new Calculator();
+    c->loadExchangeRates();
+    c->loadGlobalDefinitions();
+    c->loadLocalDefinitions();
+    std::string Input = input;
+    std::string Output;
+    if (exact_mode) {
+        default_user_evaluation_options.approximation = APPROXIMATION_EXACT;
+    } else {
+        default_user_evaluation_options.approximation = APPROXIMATION_APPROXIMATE;
+    }
+    Output = c->calculateAndPrint(Input,2000,default_user_evaluation_options);
+    delete c;
+    std::cout << Output << std::endl;
+    char * output = new char [Output.length()+1];
+    Output.copy(output,Output.length());
+    output[Output.length()] = "\0"[0];
+    return output;
+}
+
+extern "C" 
+int l_qalc(lua_State* L) {
+    const char * input = luaL_checkstring(L, 1);
+    bool exact_mode = lua_toboolean(L, 2);
+    const char * output = qalculate(input, exact_mode);
+    lua_pushstring(L, output);
+    return 1;
+}
+
+extern "C"
+int luaopen_libqalculator(lua_State* L) {
+    static const struct luaL_Reg library [] =
+    {
+        {"qalc", l_qalc},
+        {NULL, NULL}
+    };
+    luaL_register(L, "qalc", library);
+    return 1;
+}
+

test.lua

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+qalculate = require("libqalculator")
+print(qalculate.qalc("sin(3 rad)"))
+print(qalculate.qalc("sin(3 rad)",true))