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mastodon-cpp/examples/example14_easy_treeview.cpp
2019-01-27 04:18:40 +01:00

131 lines
3.5 KiB
C++

/* This file is part of mastodon-cpp.
* Prints a Mastodon-conversation in a tree.
* Argument has to be in the form: https://<domain>/<user>/<status id>
*
* This example uses a rather wasteful approach in order to use less code and
* therefore be more clear. Please don't use it on long conversations.
*/
// Don't compile this if the Easy-interface is turned off
#ifndef WITHOUT_EASY
#include <iostream>
#include <string>
#include <thread>
#include <chrono>
#include <ctime>
#include <regex>
// If we are compiling mastodon-cpp, use another include path
#ifdef MASTODON_CPP
#include "mastodon-cpp.hpp"
#include "easy/all.hpp"
#else
#include <mastodon-cpp/mastodon-cpp.hpp>
// Include all headers in mastodon-cpp/easy/
#include <mastodon-cpp/easy/all.hpp>
#endif
using Mastodon::API;
using Mastodon::Easy;
using std::cout;
using std::chrono::system_clock;
// Print a status to stdout, nicely formatted
void format_status(const Easy::Status &status, const std::uint8_t &level)
{
std::string space(level, ' ');
// Remove HTML-tags
std::regex restrip("<[^>]*>");
std::string content = std::regex_replace(status.content(), restrip, "");
cout << space << "+-----------------------------------------\n";
cout << space << "| " << status.account().acct() << ": \n";
while (!content.empty())
{
cout << space << "| " << content.substr(0, 40) << '\n';
if (content.length() > 40)
{
content = content.substr(40);
}
else
{
content.clear();
}
}
cout << space << "| "
<< Easy::strtime_local(status.created_at(), "%T") << '\n';
cout << space << "+-----------------------------------------" << std::endl;
}
// Fetch status and its descendants, output them
std::uint16_t print_status(Easy &masto, const std::string &id,
const std::uint8_t level)
{
std::uint16_t ret;
std::string answer;
API::parametermap parameters =
{
{ "id", { id }}
};
ret = masto.get(Mastodon::API::v1::statuses_id, parameters, answer);
if (ret == 0)
{
format_status(Easy::Status(answer), level);
ret = masto.get(Mastodon::API::v1::statuses_id_context,
parameters, answer);
if (ret == 0)
{
Easy::Context context(answer);
for (const Easy::Status &s : context.descendants())
{
// Only print descendant if it is a direct reply
// NOTE: This is a wasteful approach, I use it only in the
// interest of more clarity. Don't do this at home. :-)
if (s.in_reply_to_id() == id)
{
print_status(masto, s.id(), level + 4);
}
}
}
}
return ret;
}
int main(int argc, char *argv[])
{
if (argc < 2)
{
std::cerr << "usage: " << argv[0] << " <url>\n";
return 1;
}
// Extract domain name
std::string instance = std::string(argv[1]);
std::size_t pos = instance.find('/') + 2;
instance = instance.substr(pos, instance.find('/', pos) - pos);
// Extract status ID
std::string id = std::string(argv[1]);
id = id.substr(id.rfind('/') + 1);
cout << " Instance: " << instance << "\nStatus ID: " << id << "\n\n";
Easy masto(instance, "");
return print_status(masto, id, 0);
}
#else
#include <cstdio>
int main()
{
printf("mastodon-cpp was compiled without Easy support.\n");
return 255;
}
#endif // WITHOUT_EASY