lifeograph-to-rednotebook.js

const fs = require('fs');
const yaml = require('yaml');

// Read lifeograph diary
var lifeograph = fs.readFileSync('activities.diary.txt', 'utf8'), rednotebook = {};
var lines = lifeograph.split('\n');

// Iterate on lifeograph diary lines
var item = null, content = [], newDate = 0;
for(var i in lines) {
	var line = lines[i];
	if(newDate === 0 && line !== '---------------------------------------------') {
		// Skip all lines until we get to a date
		continue;
	}
	if(line.indexOf('TAGS: ') === 0) {
		// Skip tags
		continue;
	}
	if(line === '---------------------------------------------') {
		// Date formatter
		newDate++;
		if(newDate === 3)
			newDate = 1;
		continue;
	}
	if(newDate === 1) {
		// This is the date of a new diary: process the previous one and go on
		if(item !== null)
			convert(item, content);
		content = [];
		item = line;
		continue;
	}
	// If we're here, this is part of the content
	content.push(line);
}
if(item !== null)
	convert(item, content);

// Generate Rednotebook diaries
for(var my in rednotebook) {
	if(!fs.existsSync('rednotebook'))
		fs.mkdirSync('rednotebook');
	console.log('[' + my + ']: ' + Object.keys(rednotebook[my]).length + ' items');
	//~ console.log(rednotebook[my]);
	fs.writeFileSync('rednotebook/' + my + '.txt', yaml.stringify(rednotebook[my], { schema: 'failsafe' }), 'utf8');
}


// Helper method to process the diary from a specific date
function convert(itemDate, itemContent) {
	if(!itemDate || !itemContent || itemContent.length === 0)
		return;
	// Parse the date to get year, month and day
	var rnbMY = itemDate.replace('.', '-').substring(0, 7);
	var rnbDay = parseInt(itemDate.substring(8));
	// Create a new object, that will be a Rednotebook month
	if(!rednotebook[rnbMY])
		rednotebook[rnbMY] = {};
	// Each day in the month is a { day: { text: ".." } } object we'll turn to YAML
	if(!rednotebook[rnbMY][rnbDay]) {
		// First line, initialize
		rednotebook[rnbMY][rnbDay] = { text: '' };
	}
	for(var c in itemContent) {
		if(c == 0) {
			// The first line in Lifeograph is always the header
			rednotebook[rnbMY][rnbDay].text += ('= ' + convertLine(itemContent[0]) + ' =\n');
			continue;
		}
		// Append the other lines, doing some manipulation/translation if needed
		rednotebook[rnbMY][rnbDay].text += (convertLine(itemContent[c]) + '\n');
	}
}
function convertLine(itemLine) {
	var convertedLine = itemLine;
	// Lines starting with a space are the beginning of a section in Lifeograph
	if(convertedLine.indexOf(' ') == 0 && convertedLine.indexOf('  ') != 0)
		convertedLine = ('==' + convertedLine + ' ==');
	// Asterisks are used to turn the wrapper text to bold, in Lifeograph: that said,
	// lines starting with an asterisk can be interpreted as a subsection in Lifeograph
	else if(convertedLine.indexOf('*') == 0) {
		var parts = convertedLine.split('*');
		convertedLine = ('=== ' + parts[1] + ' ===');
	}
	else if(convertedLine.indexOf('\t') == 0) {
		// [tab] + [asterisk] is an unordered list item
		if(convertedLine.indexOf('\t•') == 0) {
			convertedLine = convertedLine.replace('\t• ', '- ');
		}
		// [tab] + [number.] is an ordered list item
		else {
			for(var i=0; i<100; i++) {
				if(convertedLine.indexOf('\t' + i + '. ') == 0)
					convertedLine = convertedLine.replace('\t' + i + '. ', '+ ');
			}
		}
	}
	return convertedLine;
}