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https://github.com/yhirose/cpp-peglib.git
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78 lines
1.7 KiB
C++
78 lines
1.7 KiB
C++
//
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// peglint.cc
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//
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// Copyright (c) 2015 Yuji Hirose. All rights reserved.
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// MIT License
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//
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#include <peglib.h>
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#include <fstream>
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using namespace std;
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bool read_file(const char* path, vector<char>& buff)
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{
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ifstream ifs(path, ios::in | ios::binary);
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if (ifs.fail()) {
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return false;
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}
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buff.resize(static_cast<unsigned int>(ifs.seekg(0, ios::end).tellg()));
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if (!buff.empty()) {
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ifs.seekg(0, ios::beg).read(&buff[0], static_cast<streamsize>(buff.size()));
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}
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return true;
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}
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int main(int argc, const char** argv)
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{
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if (argc < 2 || string("--help") == argv[1]) {
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cerr << "usage: peglint [grammar file path] [source file path]" << endl;
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return 1;
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}
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// Check PEG grammar
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auto syntax_path = argv[1];
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vector<char> syntax;
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if (!read_file(syntax_path, syntax)) {
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cerr << "can't open the grammar file." << endl;
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return -1;
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}
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peglib::peg peg;
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peg.log = [&](size_t ln, size_t col, const string& msg) {
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cerr << syntax_path << ":" << ln << ":" << col << ": " << msg << endl;
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};
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if (!peg.load_grammar(syntax.data(), syntax.size())) {
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return -1;
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}
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if (argc < 3) {
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return 0;
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}
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// Check source
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auto source_path = argv[2];
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vector<char> source;
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if (!read_file(source_path, source)) {
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cerr << "can't open the source file." << endl;
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return -1;
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}
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peg.log = [&](size_t ln, size_t col, const string& msg) {
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cerr << source_path << ":" << ln << ":" << col << ": " << msg << endl;
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};
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if (!peg.parse_n(source.data(), source.size())) {
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return -1;
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}
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return 0;
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}
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// vim: et ts=4 sw=4 cin cino={1s ff=unix
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