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const sqlite3 = require('sqlite3').verbose();
const dbFile = process.argv[2];
const db = new sqlite3.Database(dbFile);
const fs = require('fs');
/**
* Parses the string of properties and returns an object containing the key-value pairs.
* If the key is 'FILE', the corresponding value is processed to extract the filename.
* @param {string} s - The string of properties.
* @returns {Object} - The object containing the parsed properties.
*/
function parseProperties(s) {
const properties = {};
s.match(/\"(.*?)\" \. \"(.*?)\"/g).forEach(match => {
const [key, value] = match.match(/\"(.*?)\"/g).map(v => v.replace(/"/g, ''));
properties[key] = key === 'FILE' ? getFilename(value) : value;
});
return removeQuotesFromObject(properties);
}
/**
* Removes the double quotes from the object.
* @param {Object} obj - The object to be processed.
* @returns {Object} - The object without double quotes.
*/
function removeQuotesFromObject(obj) {
for (let key in obj) {
if (typeof obj[key] === 'string') {
obj[key] = obj[key].replace(/^"|"$/g, '');
} else if (typeof obj[key] === 'object') {
obj[key] = removeQuotesFromObject(obj[key]);
}
}
return obj;
}
/**
* Extracts the filename from the path.
* @param {string} path - The path to be processed.
* @returns {string} - The filename.
*/
function getFilename(path) {
return path.split('/').pop();
}
const queryNodes = `
SELECT
tags.tag as tags,
nodes.properties,
nodes.olp,
nodes.pos,
nodes.level,
nodes.title,
nodes.file,
nodes.id
FROM
nodes
LEFT JOIN
tags
ON
nodes.id = tags.node_id
GROUP BY
nodes.id
`;
const queryLinks = `
SELECT
type, dest as target, source
FROM
links
WHERE
type = '"id"'
`;
const queryTags = `
SELECT
*
FROM
tags
`;
const graphdata = {
type: "graphdata",
data: {},
};
db.all(queryNodes, (_, nodes) =>
db.all(queryLinks, (_, links) =>
db.all(queryTags, (_, tags) => {
graphdata.data.nodes = nodes.map(node => ({
...node,
tags: node.tags ?? [null],
file: getFilename(node.file),
properties: parseProperties(node.properties),
}));
graphdata.data.links = links;
graphdata.data.tags = tags.length ? tags : null;
fs.writeFile('graphdata.json', JSON.stringify(removeQuotesFromObject(graphdata)), (err) => {
if (err) throw err;
console.log('The file has been saved!');
});
}),
),
);
db.close();
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