83 lines
2.1 KiB
C++
83 lines
2.1 KiB
C++
// -*- c++ -*-
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/*
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Students: please don't try to understand the details of headers just
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yet. All will be explained. This header is primarily used so that you don't
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have to understand every concept all at once.
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*/
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#include <fstream>
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#include "bits/soi-dbg.hpp"
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namespace soi_h {
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void check_for_eof() {
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if (!(std::cin >> std::ws).eof())
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std::cerr << "WARNING: didn't read the whole input\n";
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}
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void noninteractive_check_eof() {
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// make symbol 0x1A (Ctrl+Z) a whitespace
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struct console_ctype : std::ctype<char> {
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static const mask* get_table() {
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static const std::array<mask, table_size> table = []() {
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std::array<mask, table_size> table;
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std::copy(classic_table(), classic_table() + table_size, table.begin());
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table['\x1a'] |= space;
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return table;
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}();
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return table.data();
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}
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console_ctype(std::size_t refs = 0) : ctype(get_table(), false, refs) {}
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};
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std::cin.imbue(std::locale(std::cin.getloc(), new console_ctype));
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check_for_eof();
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}
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bool should_check_for_eof() {
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if (const char* eofcheck_enabled = std::getenv("SOI_EOFCHECK")) {
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if (!std::strcmp(eofcheck_enabled, "1"))
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return true;
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if (!std::strcmp(eofcheck_enabled, "0"))
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return false;
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}
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return false;
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}
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void initialize_debug() {
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std::cout << std::unitbuf; // enable automatic flushing
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std::cin.exceptions(std::ifstream::failbit | std::ifstream::badbit);
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std::ios::sync_with_stdio(false);
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if (should_check_for_eof() &&
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std::atexit(noninteractive_check_eof) != 0) {
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std::cerr << "WARNING: soi.h -- registration of sanity check at exit failed\n";
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}
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soi_h::detail::dbg_init();
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}
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struct soi_h_initializer {
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soi_h_initializer(bool release) {
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if (release) {
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std::ios::sync_with_stdio(false);
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std::cin.tie(0);
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} else {
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initialize_debug();
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}
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}
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};
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#ifdef SOI_RELEASE
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soi_h_initializer soi_h_initializer_{true};
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#else
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soi_h_initializer soi_h_initializer_{false};
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#endif
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} // end namespace soi_h
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#include "bits/soi-deprecate.hpp"
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#include "bits/include-all.hpp"
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#define int int64_t
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using namespace std;
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