Make metadata handling more conveniant

relaxisloader.c

@@ -250,6 +250,90 @@ static struct rlx_datapoint* rlx_get_datapoints(struct rlxfile* file, int id, si
 	return out;
 }
 
+
+const char* rlx_metadata_get_key(enum rlx_metadata_field field)
+{
+	switch(field)
+	{
+		case RLX_FIELD_TEMPERATURE:
+			return "Temperature";
+		case RLX_FIELD_DC_VOLTAGE:
+			return "DCVoltage";
+		case RLX_FIELD_AC_VOLTAGE:
+			return "ACVoltage";
+		case RLX_FIELD_CURRENT:
+			return "Current";
+		case RLX_FIELD_TIME:
+			return "Time";
+		case RLX_FIELD_HARMONIC:
+			return "Harmonic";
+		case RLX_FIELD_CONCENTRATION:
+			return "Concentration";
+		case RLX_FIELD_FREE_VARIABLE_ONE:
+			return "FreeVariable";
+		case RLX_FIELD_FREE_VARIABLE_TWO:
+			return "FreeVariable2";
+		case RLX_FIELD_AREA:
+			return "Area";
+		case RLX_FIELD_THICKNESS:
+			return "Thickness";
+		case RLX_FIELD_SOC:
+			return "SOC";
+		case RLX_FIELD_SOH:
+			return "SOH";
+		case RLX_FIELD_PRESSURE:
+			return "Pressure";
+		case RLX_FIELD_UNKOWN:
+		default:
+			return "Unkown";
+	}
+}
+
+enum rlx_metadata_field rlx_metadata_get_enum(const char* key)
+{
+	if(strcmp(key, rlx_metadata_get_key(RLX_FIELD_TEMPERATURE)) == 0)
+		return RLX_FIELD_TEMPERATURE;
+	else if(strcmp(key, rlx_metadata_get_key(RLX_FIELD_DC_VOLTAGE)) == 0)
+		return RLX_FIELD_DC_VOLTAGE;
+	else if(strcmp(key, rlx_metadata_get_key(RLX_FIELD_AC_VOLTAGE)) == 0)
+		return RLX_FIELD_AC_VOLTAGE;
+	else if(strcmp(key, rlx_metadata_get_key(RLX_FIELD_CURRENT)) == 0)
+		return RLX_FIELD_CURRENT;
+	else if(strcmp(key, rlx_metadata_get_key(RLX_FIELD_TIME)) == 0)
+		return RLX_FIELD_TIME;
+	else if(strcmp(key, rlx_metadata_get_key(RLX_FIELD_HARMONIC)) == 0)
+		return RLX_FIELD_HARMONIC;
+	else if(strcmp(key, rlx_metadata_get_key(RLX_FIELD_CONCENTRATION)) == 0)
+		return RLX_FIELD_CONCENTRATION;
+	else if(strcmp(key, rlx_metadata_get_key(RLX_FIELD_FREE_VARIABLE_ONE)) == 0)
+		return RLX_FIELD_FREE_VARIABLE_ONE;
+	else if(strcmp(key, rlx_metadata_get_key(RLX_FIELD_FREE_VARIABLE_TWO)) == 0)
+		return RLX_FIELD_FREE_VARIABLE_TWO;
+	else if(strcmp(key, rlx_metadata_get_key(RLX_FIELD_AREA)) == 0)
+		return RLX_FIELD_AREA;
+	else if(strcmp(key, rlx_metadata_get_key(RLX_FIELD_THICKNESS)) == 0)
+		return RLX_FIELD_THICKNESS;
+	else if(strcmp(key, rlx_metadata_get_key(RLX_FIELD_SOC)) == 0)
+		return RLX_FIELD_SOC;
+	else if(strcmp(key, rlx_metadata_get_key(RLX_FIELD_SOH)) == 0)
+		return RLX_FIELD_SOH;
+	else if(strcmp(key, rlx_metadata_get_key(RLX_FIELD_PRESSURE)) == 0)
+		return RLX_FIELD_PRESSURE;
+	else if(strcmp(key, rlx_metadata_get_key(RLX_FIELD_PRESSURE)) == 0)
+		return RLX_FIELD_PRESSURE;
+	return RLX_FIELD_UNKOWN;
+}
+
+struct rlx_metadata* rlx_metadata_get(struct rlx_spectra* spectra, const char* key)
+{
+	for(size_t i = 0; i < spectra->metadata_count; ++i)
+	{
+		if(strcmp(spectra->metadata[i].key, key) == 0)
+			return spectra->metadata+i;
+	}
+	return NULL;
+}
+
 static struct rlx_metadata* rlx_get_metadata(struct rlxfile* file, int id, size_t *length)
 {
 	char **table;

relaxisloader/relaxisloader.h

@@ -101,6 +101,25 @@ enum rlx_field_type
 	RLX_FIELD_TYPE_DOUBLE
 };
 
+enum rlx_metadata_field
+{
+	RLX_FIELD_TEMPERATURE,
+	RLX_FIELD_DC_VOLTAGE,
+	RLX_FIELD_AC_VOLTAGE,
+	RLX_FIELD_CURRENT,
+	RLX_FIELD_TIME,
+	RLX_FIELD_HARMONIC,
+	RLX_FIELD_CONCENTRATION,
+	RLX_FIELD_FREE_VARIABLE_ONE,
+	RLX_FIELD_FREE_VARIABLE_TWO,
+	RLX_FIELD_AREA,
+	RLX_FIELD_THICKNESS,
+	RLX_FIELD_SOC,
+	RLX_FIELD_SOH,
+	RLX_FIELD_PRESSURE,
+	RLX_FIELD_UNKOWN,
+};
+
 struct rlx_metadata {
 	char *key;
 	char *str;
@@ -115,6 +134,22 @@ struct rlx_metadata {
  */
 void rlx_metadata_free(struct rlx_metadata* metadata);
 
+/**
+ * @brief Gets the key string corrisponding to a field enum.
+ *
+ * @param field the enum of the field to get the key to
+ * @return A string with the key corrisponding to the enum. Owned by librelaxisloader do not free.
+ */
+const char* rlx_metadata_get_key(enum rlx_metadata_field field);
+
+/**
+ * @brief Gets the field enum corrisponding to the key string.
+ *
+ * @param key the key string.
+ * @return the enum corrisponding to the key.
+ */
+enum rlx_metadata_field rlx_metadata_get_enum(const char* key);
+
 /**
  * @brief This struct is used to house an EIS spectra and associated meta-data.
  **/
@@ -155,6 +190,15 @@ void rlx_spectra_free(struct rlx_spectra* spectra);
  */
 void rlx_spectra_free_array(struct rlx_spectra** spectra_array);
 
+/**
+ * @brief Finds a key-value pair in a spectra
+ *
+ * @param spectra the spectra.
+ * @param key the key to search for.
+ * @return A pointer to the metadatas struct corrisponding to the key or NULL if the array dose not contain the key. Owned by the spectra.
+ */
+struct rlx_metadata* rlx_metadata_get(struct rlx_spectra* spectra, const char* key);
+
 struct rlx_fitparam {
 	int spectra_id;
 	int p_index;