Added examples

src/examples/example1_dump_json.cpp

@@ -1,4 +1,6 @@
 /*  This file is part of mastodon-cpp.
+ *  This example dumps the raw JSON of your last toot with media attached
+ *  and your last 2 followers.
  */
 
 #include <iostream>

src/examples/example2_parse_account.cpp

@@ -0,0 +1,66 @@
+/*  This file is part of mastodon-cpp.
+ *  This example parses your account data and prints it out in a readable way.
+ */
+
+#include <iostream>
+#include <vector>
+#include <string>
+#include <cstdint>
+#include <sstream>
+#include <boost/property_tree/ptree.hpp>
+#include <boost/property_tree/json_parser.hpp>
+#include "../mastodon-cpp.hpp"
+
+using Mastodon::API;
+namespace pt = boost::property_tree;
+using std::cout;
+
+int main(int argc, char *argv[])
+{
+    if (argc < 3)
+    {
+        std::cerr << "usage: " << argv[0] << " <instance> <access token>\n";
+        return 1;
+    }
+
+    Mastodon::API masto(argv[1], argv[2]);
+    std::string answer;
+    std::uint16_t ret;
+
+    ret = masto.get(API::v1::accounts_verify_credentials, answer);
+    if (ret == 0)
+    {
+        std::istringstream iss(answer);
+        pt::ptree tree;
+        
+        pt::read_json(iss, tree);
+        std::string uid = tree.get<std::string>("id");
+        cout << "Your ID is: " << uid << '\n';
+        cout << "Your whole acount tree:\n";
+        
+        for (const pt::ptree::value_type &v : tree.get_child(""))
+        {
+            cout << "    ";
+            if (v.second.size() > 0)
+            {
+                cout << v.first.data() << ": \n";
+                for (const pt::ptree::value_type &vc : v.second.get_child(""))
+                {
+                    cout << "        ";
+                    cout << vc.first.data() << ": " << vc.second.data() << '\n';
+                }
+            }
+            else
+            {
+                cout << v.first.data() << ": " << v.second.data() << '\n';
+            }
+        }
+    }
+    else
+    {
+        std::cerr << "Error code: " << ret << '\n';
+        return ret;
+    }
+
+    return 0;
+}

src/examples/example3_mastocron.cpp

@@ -0,0 +1,97 @@
+/*  This file is part of mastodon-cpp.
+ *  Prints the new toots under a hashtag, designed to be used in cronjobs
+ */
+
+#include <iostream>
+#include <vector>
+#include <string>
+#include <cstdint>
+#include <sstream>
+#include <regex>
+#include <cstdlib>
+#include <mastodon-cpp.hpp>
+#include <boost/property_tree/ptree.hpp>
+#include <boost/property_tree/json_parser.hpp>
+
+namespace pt = boost::property_tree;
+using Mastodon::API;
+using std::cout;
+using std::string;
+
+int main(int argc, char *argv[])
+{
+    string limit = "20";
+    if (argc < 3)
+    {
+        std::cerr << "usage: " << argv[0] << " <instance> <hashtag> [limit]\n";
+        std::cerr << "  Default limit is 20, max limit is 40.\n";
+        return 1;
+    }
+    else if (argc == 4)
+    {
+        limit = argv[3];
+    }
+
+    Mastodon::API masto(argv[1], "");
+    string hashtag = argv[2];
+    string answer;
+    std::uint16_t ret;
+    pt::ptree config;
+    string lastid = "0";
+    string filename = string(getenv("HOME")) + "/.config/mastocron.json";
+
+    // Read config file, get last seen toot-id
+    try {
+        pt::read_json(filename, config);
+        lastid = config.get(hashtag, "0");
+    }
+    catch (std::exception &e)
+    {
+        // most likely no config file found, ignore
+    }
+
+    // Only get toots we haven't seen yet
+    std::vector<string> params = { "limit=" + limit, "since_id=" + lastid };
+    ret = masto.get(API::v1::timelines_tag_hashtag, hashtag, params, answer);
+
+    if (ret == 0)
+    {
+        // If answer is empty, there are no new toots,
+        // if answer is "[]" there are none at all
+        if (answer != "" && answer != "[]")
+        {
+            std::istringstream iss(answer);
+            pt::ptree tree;
+            
+            pt::read_json(iss, tree);
+            for (const pt::ptree::value_type &toot : tree.get_child(""))
+            {
+                string content = toot.second.get<string>("content");
+                std::regex reparagraph("</p><p>");
+                std::regex restrip("<[^>]*>");
+
+                cout << "++++++++\n";
+                content = std::regex_replace(content, reparagraph, "\n\n");
+                cout << std::regex_replace(content, restrip, "") << '\n';
+                cout << "  – ";
+                cout << toot.second.get<string>("account.display_name")
+                     << " (" << toot.second.get<string>("account.acct") << ") at "
+                     << toot.second.get<string>("created_at") << "\n";
+                cout << "    " << toot.second.get<string>("url") << '\n';
+                cout << "++++++++\n";
+            }
+
+            // Write the id of the newest toot in the config file
+            lastid = tree.front().second.get<string>("id");
+            config.put(hashtag, lastid);
+            pt::write_json(filename, config);
+        }
+    }
+    else
+    {
+        std::cerr << "Error code: " << ret << '\n';
+        return ret;
+    }
+
+    return 0;
+}