/*
	Test une facon de simnplier, uniformer l'inspection d'une chaine
*/
#include <stdio.h>
#include <misc.h>
#include <string>
#include <functional>
#include "getnow.h"

using namespace std;


struct copybuf{
	const char *pt;
	string buf;
	bool end = false;
	bool skipped = false;
	copybuf(PARAM_STRING p){
		pt = p.ptr;
	}
	void stop(){
		end = true;
	}
	void insert (const char car){
		buf += car;
	}
	void insert (const char *str){
		buf += str;
	}
	void replace(unsigned nbskip, const char car){
		buf += car;
		skip(nbskip);
	}
	void replace(unsigned nbskip, const char *str){
		buf += str;
		skip(nbskip);
	}
	void replace(unsigned nbskip, const std::string str){
		buf += str;
		skip(nbskip);
	}
	void skip (unsigned n){
		skipped=true;
		while (*pt != '\0' && n > 0){
			pt++;
			n--;
		}
	}
	void clear(){
		buf.clear();
	}
};

string copystring(PARAM_STRING p,std::function<void(copybuf &c, const char*)> func)
{
	copybuf buf(p);
	while (!buf.end && *buf.pt != '\0'){
		buf.skipped = false;
		func(buf,buf.pt);
		if (!buf.skipped){
			buf.buf += *buf.pt;
			buf.pt++;
		}
	}
	return buf.buf;
};

int main ()
{
	const char *test = "allo comment ca va";
	bool debug = false;
	int nb = debug ? 1 : 1000000;
	{
		long long start = getnow();
		size_t size = 0;
		for (int i=0; i<nb; i++){
			auto ret = copystring(test,[](auto &c, auto pt){
					char car = *pt;
					if (car == 'a'){
						c.insert ('A');
					}else if (car == 'l'){
						c.replace(1,'L');
					}
				});
			if (debug) printf ("copystring ret=%s\n",ret.c_str());
			size += ret.size();
		}
		long long end = getnow();
		showtime ("copystring",start,end);
		printf ("size = %lu\n",size);
	}
	{
		long long start = getnow();
		size_t size = 0;
		for (int i=0; i<nb; i++){
			string ret;
			const char *pt = test;
			while (*pt != '\0'){
				if (*pt == 'a'){
					ret += 'A';
				}else if (*pt == 'l'){
					ret += 'L';
					pt++;
					continue;
				}
				ret += *pt++;
			}
			if (debug) printf ("std ret=%s\n",ret.c_str());
			size += ret.size();
		}
		long long end = getnow();
		showtime ("copystring",start,end);
		printf ("size = %lu\n",size);
	}
	return 0;
}