Function GraphEntity_PropertiesToString

src/graph/entities/graph_entity.c:85–128

prints the attribute set into a buffer, returns what is the string length buffer can be re-allocated if needed

// prints the attribute set into a buffer, returns what is the string length
// buffer can be re-allocated if needed
size_t GraphEntity_PropertiesToString
(
	const GraphEntity *e,
	char **buffer,
	size_t *bufferLen,
	size_t *bytesWritten
) {
	// make sure there is enough space for "{...}\0"
	if(*bufferLen - *bytesWritten < 64) {
		*bufferLen += 64;
		*buffer = rm_realloc(*buffer, *bufferLen);
	}
	*bytesWritten += snprintf(*buffer, *bufferLen, "{");
	GraphContext *gc = QueryCtx_GetGraphCtx();
	const AttributeSet set = GraphEntity_GetAttributes(e);
	int propCount = AttributeSet_Count(set);
	for(int i = 0; i < propCount; i++) {
		Attribute_ID attr_id;
		SIValue value = AttributeSet_GetIdx(set, i, &attr_id);
		// print key
		const char *key = GraphContext_GetAttributeString(gc, attr_id);
		// check for enough space
		size_t keyLen = strlen(key);
		if(*bufferLen - *bytesWritten < keyLen) {
			*bufferLen += keyLen;
			*buffer = rm_realloc(*buffer, *bufferLen);
		}
		*bytesWritten += snprintf(*buffer + *bytesWritten, *bufferLen, "%s:", key);

		// print value
		SIValue_ToString(value, buffer, bufferLen, bytesWritten);

		// if not the last element print ", "
		if(i != propCount - 1) *bytesWritten = snprintf(*buffer + *bytesWritten, *bufferLen, ", ");

	}
	// check for enough space for close with "}\0"
	if(*bufferLen - *bytesWritten < 2) {
		*bufferLen += 2;
		*buffer = rm_realloc(*buffer, *bufferLen);
	}
	*bytesWritten += snprintf(*buffer + *bytesWritten, *bufferLen, "}");
	return *bytesWritten;
}

void GraphEntity_ToString
(