1 files changed, 207 insertions, 0 deletions
diff --git a/sensor/include/trygvis/sensor.h b/sensor/include/trygvis/sensor.h
new file mode 100644
index 0000000..42362b2
--- /dev/null
+++ b/sensor/include/trygvis/sensor.h
@@ -0,0 +1,207 @@
+#pragma once
+
+#include <exception>
+#include <string>
+#include <iostream>
+#include <memory>
+#include <boost/optional/optional.hpp>
+
+namespace trygvis {
+namespace sensor {
+
+using namespace std;
+
+template<typename A>
+using o = boost::optional<A>;
+
+enum class sample_format_type {
+    AUTO,
+    CSV,
+    KEY_VALUE,
+    JSON,
+    SQL,
+    RRD,
+};
+
+string to_string(const sample_format_type &arg);
+
+std::ostream& operator<<(std::ostream& os, sample_format_type const& type);
+
+std::istream& operator>>(std::istream& is, sample_format_type& type);
+
+class sample_exception : public runtime_error {
+public:
+    sample_exception(const string &what) : runtime_error(what) {
+    }
+};
+
+class KeyDictionary;
+
+class SampleKey;
+
+class KeyDictionary;
+
+using SampleKeyVector = vector<SampleKey *>;
+using SampleKeyIndex = SampleKeyVector::size_type;
+
+struct SampleKey {
+private:
+    SampleKey(const SampleKey& that) = delete;
+    SampleKey(SampleKeyIndex index, const string &name) : index(index), name(name) {
+        if (name.length() == 0) {
+            throw sample_exception("Bad sample key.");
+        }
+    }
+
+public:
+    friend class KeyDictionary;
+
+    inline
+    bool operator==(const SampleKey &that) const {
+        return name == that.name;
+    }
+
+    const SampleKeyIndex index;
+    const string name;
+};
+
+class KeyDictionary {
+public:
+    KeyDictionary() {
+    }
+
+    ~KeyDictionary() {
+        std::for_each(keys.begin(), keys.end(), std::default_delete<SampleKey>());
+    }
+    KeyDictionary(KeyDictionary& that) = delete;
+
+    SampleKey *indexOf(const string key) {
+        SampleKeyIndex i = 0;
+        for (auto ptr = keys.cbegin(); ptr != keys.cend(); ptr++, i++) {
+            if ((*ptr)->name == key) {
+                return *ptr;
+            }
+        }
+
+        i = keys.size();
+        auto sample_key = new SampleKey(i, key);
+        keys.push_back(sample_key);
+
+        return sample_key;
+    }
+
+    SampleKey *at(SampleKeyIndex i) const {
+        if (i >= keys.size()) {
+            throw sample_exception("Out of bounds");
+        }
+
+        return keys.at(i);
+    }
+
+    vector<SampleKey *> findIndexes(SampleKeyVector &keys) {
+        vector<SampleKey *> indexes;
+
+        for (auto &key: keys) {
+            auto index = indexOf(key->name);
+            indexes.push_back(index);
+        }
+
+        return indexes;
+    }
+
+    inline
+    SampleKeyVector::const_iterator end() const {
+        return keys.cend();
+    }
+
+    inline
+    SampleKeyVector::const_iterator begin() const {
+        return keys.cbegin();
+    }
+
+//    string nameOf(SampleKeyIndex index) {
+//        return keys.at(index).name;
+//    }
+
+    inline
+    SampleKeyVector::size_type size() const {
+        return keys.size();
+    }
+
+    inline
+    bool empty() const {
+        return keys.empty();
+    }
+
+private:
+    SampleKeyVector keys;
+};
+
+class SampleRecord {
+public:
+    typedef vector<o<string>> vec;
+
+    SampleRecord(KeyDictionary &dict) : dict(dict) {
+    }
+
+    SampleRecord(KeyDictionary &dict, vec values)
+            : dict(dict), values(values) {
+    }
+
+    inline
+    vec::const_iterator cbegin() const {
+        return values.cbegin();
+    }
+
+    inline
+    vec::const_iterator cend() const {
+        return values.cend();
+    }
+
+    inline
+    bool empty() const {
+        return values.empty();
+    }
+
+    const o<string> at(const SampleKey *key) const {
+        SampleKeyIndex index = key->index;
+        if (index >= values.size()) {
+            return o<string>();
+        }
+
+        return values.at(index);
+    }
+
+    void set(const SampleKey *key, const std::string &value) {
+        values.resize(max(values.size(), key->index + 1));
+
+        values.at(key->index).reset(value);
+    }
+
+    template<class A>
+    const o<A> lexical_at(const SampleKey *key) const;
+
+    string to_string() const {
+        SampleKeyIndex i = 0;
+        string s;
+        for (auto ptr = values.begin(); ptr != values.end(); ptr++, i++) {
+            auto o = *ptr;
+
+            if (!o) {
+                continue;
+            }
+
+            auto value = o.get();
+
+            s += dict.at(i)->name + " = " + value + ", ";
+        }
+        return s;
+    }
+
+    KeyDictionary &dict;
+private:
+    vec values;
+};
+
+}
+}