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77 lines
2.0 KiB
C++
77 lines
2.0 KiB
C++
#ifndef CRUCIBLE_BENCODE_H
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#define CRUCIBLE_BENCODE_H
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#include "crucible/error.h"
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#include <cctype>
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#include <fstream>
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#include <map>
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#include <memory>
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#include <iostream>
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#include <string>
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#include <vector>
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namespace crucible {
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using namespace std;
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// So...much...forward declaration...
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struct bencode_variant;
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typedef shared_ptr<bencode_variant> bencode_variant_ptr;
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struct bencode_variant {
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virtual ~bencode_variant();
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virtual ostream& print(ostream &os, const string &parent = "") const = 0;
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virtual bencode_variant_ptr at(size_t i) const;
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virtual bencode_variant_ptr at(const string &s) const;
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virtual operator string() const;
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};
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ostream& operator<<(ostream &os, const bencode_variant_ptr &p);
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// i<base-10-ascii>e
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struct bencode_int : public bencode_variant {
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~bencode_int();
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bencode_int(int64_t i);
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ostream & print(ostream &os, const string &parent = "") const override;
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private:
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int64_t m_i;
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};
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// <length>:contents
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struct bencode_string : public bencode_variant {
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~bencode_string();
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bencode_string(string s);
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ostream & print(ostream &os, const string &parent = "") const override;
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operator string() const override;
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private:
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string m_s;
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};
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// l<contents>e
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struct bencode_list : public bencode_variant {
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~bencode_list();
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bencode_list(const vector<bencode_variant_ptr> &l);
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ostream & print(ostream &os, const string &parent = "") const override;
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using bencode_variant::at;
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bencode_variant_ptr at(size_t i) const override;
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private:
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vector<bencode_variant_ptr> m_l;
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};
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// d<contents>e (lexicographically sorted pairs of <key><value>, key is a string)
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struct bencode_dict : public bencode_variant {
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~bencode_dict();
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bencode_dict(const map<string, bencode_variant_ptr> &m);
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ostream& print(ostream &os, const string &parent = "") const override;
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using bencode_variant::at;
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bencode_variant_ptr at(const string &key) const override;
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private:
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map<string, bencode_variant_ptr> m_m;
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};
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bencode_variant_ptr bencode_decode_stream(istream &is);
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};
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#endif
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