From f89ec560be3436050f7f55eec1da4a40662c0de8 Mon Sep 17 00:00:00 2001
From: Trygve Laugstøl <trygvis@inamo.no>
Date: Wed, 4 Mar 2015 08:14:18 +0100
Subject: o Adding JSON output format.

---
 apps/sm-serial-read.cpp | 121 +++++++++++++++++++++++++++++-------------------
 1 file changed, 73 insertions(+), 48 deletions(-)

diff --git a/apps/sm-serial-read.cpp b/apps/sm-serial-read.cpp
index 8d5e70b..4dab17b 100644
--- a/apps/sm-serial-read.cpp
+++ b/apps/sm-serial-read.cpp
@@ -4,6 +4,7 @@
 #include <thread>
 #include <boost/asio/serial_port.hpp>
 #include <boost/regex.hpp>
+#include <chrono>
 #include "json.hpp"
 #include "apps.h"
 
@@ -55,65 +56,89 @@ using namespace trygvis::apps;
 namespace po = boost::program_options;
 using json = nlohmann::json;
 
-class sm_serial_read : public app {
-
-    Format format;
-
-    class port_handler {
-    public:
-        port_handler(serial_port &serial_port) : port(serial_port) {
-        }
+class port_handler {
+public:
+    port_handler(Format format, string device, serial_port &serial_port) :
+            format(format), device(device), port(serial_port) {
+    }
 
-        void run() {
-            auto packet = make_shared<vector<uint8_t>>(1024);
+    void run() {
+        auto packet = make_shared<vector<uint8_t>>(1024);
 
-            while (port.is_open()) {
-                size_t some = port.read_some(buffer);
-                for (int i = 0; i < some; i++) {
-                    uint8_t b = data[i];
+        while (port.is_open()) {
+            size_t some = port.read_some(buffer);
+            for (int i = 0; i < some; i++) {
+                uint8_t b = data[i];
 
-                    if (b == packet_delimiter) {
-                        on_packet(packet);
-                        packet = make_shared<vector<uint8_t>>(1024);
-                    } else {
-                        packet->emplace_back(b);
-                    }
+                if (b == packet_delimiter) {
+                    on_packet(packet);
+                    packet = make_shared<vector<uint8_t>>(1024);
+                } else {
+                    packet->emplace_back(b);
                 }
             }
-
-            cout << "port closed" << endl;
         }
 
-        void on_packet(shared_ptr<vector<uint8_t>> packet) {
-            auto s = std::string((char *) packet->data(), packet->size());
-            cout << "packet: " << s << endl;
-
-            static const boost::regex e("#(\\d+) = (\\d+)");
-
-            std::string::const_iterator start = s.begin();
-            std::string::const_iterator end = s.end();
-            boost::match_results<std::string::const_iterator> what;
-            boost::match_flag_type flags = boost::match_default;
-
-            while(regex_search(start, end, what, e, flags)) {
-                auto sensor = what[1];
-                auto value = what[2];
-                start = what[0].second;
+        cout << "port closed" << endl;
+    }
 
+    void on_packet(shared_ptr<vector<uint8_t>> packet) {
+//        std::chrono::time_point<std::chrono::system_clock> ;
+        auto timestamp = std::chrono::system_clock::now().time_since_epoch().count();
+        auto s = std::string((char *) packet->data(), packet->size());
+        cout << "packet: " << s << endl;
+
+        static const boost::regex e("#(\\d+) = (\\d+)");
+
+        std::string::const_iterator start = s.begin();
+        std::string::const_iterator end = s.end();
+        boost::match_results<std::string::const_iterator> what;
+        boost::match_flag_type flags = boost::match_default;
+
+        while (regex_search(start, end, what, e, flags)) {
+            auto sensor = static_cast<string>(what[1]);
+            auto value = static_cast<string>(what[2]);
+            start = what[0].second;
+
+            static const string device_type = "serial";
+            if (format == Format::JSON) {
+                json j;
+                j["device_type"] = device_type;
+                j["device"] = device;
+                j["timestamp"] = timestamp;
+                j["sensor"] = sensor;
+                j["value"] = value;
+                cout << j << endl;
+            } else if (format == Format::SQL) {
+                cout << "INSERT INTO serial_sample(device_type, device, sensor, timestamp, value) VALUES("
+                        << device_type << ", "
+                        << device << ", "
+                        << timestamp << ", "
+                        << sensor << ", "
+                        << value << ");"
+                        << endl;
+            } else {// plain
                 cout << "sensor #" << sensor << " = " << value << endl;
-
-                flags |= boost::match_prev_avail;
-                flags |= boost::match_not_bob;
             }
+
+            flags |= boost::match_prev_avail;
+            flags |= boost::match_not_bob;
         }
+    }
 
-    private:
-        static const size_t size = 1024;
-        static const uint8_t packet_delimiter = '\n';
-        uint8_t data[size];
-        mutable_buffers_1 buffer = boost::asio::buffer(data, size);
-        serial_port &port;
-    };
+private:
+    static const size_t size = 1024;
+    static const uint8_t packet_delimiter = '\n';
+    string device;
+    serial_port &port;
+    Format format;
+    uint8_t data[size];
+    mutable_buffers_1 buffer = boost::asio::buffer(data, size);
+};
+
+class sm_serial_read : public app {
+
+    Format format;
 
 public:
     void add_options(po::options_description_easy_init &options) override {
@@ -145,7 +170,7 @@ public:
             cout << "port is not open" << endl;
         }
 
-        port_handler(port).run();
+        port_handler(format, port_name, port).run();
 
         return EXIT_SUCCESS;
     }
-- 
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