mirror of https://github.com/arendst/Tasmota.git
60 lines
1.7 KiB
C++
60 lines
1.7 KiB
C++
/********************************************************************
|
|
** Copyright (c) 2018-2020 Guan Wenliang
|
|
** This file is part of the Berry default interpreter.
|
|
** skiars@qq.com, https://github.com/Skiars/berry
|
|
** See Copyright Notice in the LICENSE file or at
|
|
** https://github.com/Skiars/berry/blob/master/LICENSE
|
|
********************************************************************/
|
|
#include "macro_table.h"
|
|
#include <regex>
|
|
#include <fstream>
|
|
#include <sstream>
|
|
|
|
std::string macro_table::readfile(const std::string &filename)
|
|
{
|
|
std::ifstream in(filename);
|
|
std::ostringstream tmp;
|
|
tmp << in.rdbuf();
|
|
return tmp.str();
|
|
}
|
|
|
|
int macro_table::parse_value(std::string str)
|
|
{
|
|
if (!str.length()) {
|
|
return 1; /* defined a macro name but no content, considered true */
|
|
}
|
|
if (!(str[0] >= '0' && str[0] <= '9')) {
|
|
return 1;
|
|
}
|
|
return atoi(str.c_str());
|
|
}
|
|
|
|
void macro_table::scan_file(const std::string &filename)
|
|
{
|
|
std::string str(readfile(filename));
|
|
std::regex reg("(?:\\n|$)\\s*#define\\s+(\\w+)[ \\t]+(\\w+)");
|
|
std::sregex_iterator it(str.begin(), str.end(), reg);
|
|
std::sregex_iterator end;
|
|
while (it != end) {
|
|
m_map[it->str(1)] = parse_value(it->str(2));
|
|
++it;
|
|
}
|
|
}
|
|
|
|
bool macro_table::query(const std::string &str) const
|
|
{
|
|
std::regex reg("(!?)(\\w+)");
|
|
std::match_results<std::string::const_iterator> res;
|
|
if (regex_match(str, res, reg)) {
|
|
auto it = m_map.find(res[2]);
|
|
int value = it == m_map.end() ? 0 : it->second;
|
|
return res[1] == "!" ? value == 0 : value != 0;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
std::map<std::string, int> macro_table::table() const
|
|
{
|
|
return m_map;
|
|
}
|