Method GetFileInfoResponse

src/Platform/RepRap.cpp:2322–2427

Get information for the specified file, or the currently printing file (if 'filename' is null or empty), in JSON format Return GCodeResult::Warning if the file doesn't exist, else GCodeResult::ok or GCodeResult::notFinished

// Get information for the specified file, or the currently printing file (if 'filename' is null or empty), in JSON format
// Return GCodeResult::Warning if the file doesn't exist, else GCodeResult::ok or GCodeResult::notFinished
GCodeResult RepRap::GetFileInfoResponse(const GCodeBuffer *_ecv_null gb, c_string _ecv_null filename, OutputBuffer *_ecv_null &response, bool quitEarly) noexcept
{
	const bool specificFile = (filename != nullptr && filename[0] != 0);
	GCodeFileInfo info;
	GlobalVariables vars;												// if we asked for a specific file then this is the variable set that we fill in for customiNFO
	const GlobalVariables *p_vars;										// this will be a pointer to whatever GlobalVariables instance holds the customInfo
	if (specificFile)
	{
#if HAS_MASS_STORAGE || HAS_EMBEDDED_FILES
		// Poll file info for a specific file
		String<MaxFilenameLength> filePath;
		if (!MassStorage::CombineName(filePath.GetRef(), Platform::GetGCodeDir(), filename))
		{
			info.isValid = false;
		}
		else if (MassStorage::GetFileInfo(filePath.c_str(), info, quitEarly, &vars) == GCodeResult::notFinished)
		{
			// This may take a few runs...
			return GCodeResult::notFinished;
		}
		p_vars = &vars;
#else
		return GCodeResult::warning;
#endif
	}
	else if (!printMonitor->GetPrintingFileInfo(info, p_vars))
	{
		return GCodeResult::notFinished;
	}

	if (!OutputBuffer::Allocate(response, false))
	{
		return GCodeResult::notFinished;
	}

	StartJsonResponse(gb, response);
	if (info.isValid)
	{
		response->catf("\"err\":0,\"fileName\":\"%.s\",\"size\":%lu,", ((specificFile) ? filename : printMonitor->GetPrintingFilename()), info.fileSize);
		tm timeInfo;
		gmtime_r(&info.lastModifiedTime, &timeInfo);
		if (timeInfo.tm_year > /*19*/80)
		{
			response->catf("\"lastModified\":\"%04u-%02u-%02uT%02u:%02u:%02u\",",
					timeInfo.tm_year + 1900, timeInfo.tm_mon + 1, timeInfo.tm_mday, timeInfo.tm_hour, timeInfo.tm_min, timeInfo.tm_sec);
		}

		response->catf("\"height\":%.2f,\"layerHeight\":%.2f,\"numLayers\":%u,", (double)info.objectHeight, (double)info.layerHeight, info.numLayers);
		if (info.printTime != 0)
		{
			response->catf("\"printTime\":%" PRIu32 ",", info.printTime);
		}
		if (info.simulatedTime != 0)
		{
			response->catf("\"simulatedTime\":%" PRIu32 ",", info.simulatedTime);
		}

		response->cat("\"filament\":");