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pathMapper.js
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pathMapper.js
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var database = require('./database.js');
var Promise = require('node-promise').Promise;
var pathmapper = module.exports = function(dependencies) {
var api = {};
var startupPromise = new Promise();
function createFSEntry(stats) {
return {
contents: {},
stats: stats
};
}
var pathmap = createFSEntry();
function buildTree(fsentries) {
var root = createFSEntry();
fsentries.forEach(function(fse) {
addEntry(root, fse);
});
return root;
}
function addEntry(root, fse) {
var parts = fse.path.split('/');
var basemap = root;
parts.forEach(function(part, idx) {
if (!basemap.contents.hasOwnProperty(part)) {
var stats;
if (idx === parts.length - 1) {
stats = fse;
} else {
stats = {
isDir: true,
size: 0,
path: parts.slice(0, idx + 1).join('/')
};
}
basemap.contents[part] = createFSEntry(stats);
}
basemap = basemap.contents[part];
});
return root;
}
function getContent(root, path) {
var parts = path.split('/');
var basemap = root;
if (path !== '') {
for (var idx = 0; idx < parts.length; idx++) {
var part = parts[idx];
if (!basemap.contents.hasOwnProperty(part)) {
return null;
} else {
basemap = basemap.contents[part];
}
}
}
return basemap;
}
api.getDirectoryContent = function(path, searchWords) {
var p = new Promise();
searchWords = searchWords || [];
startupPromise.then(function(models) {
if (searchWords.length === 0) {
var ret = getContent(pathmap, path);
if (ret === null) {
return p.reject('Path not found');
}
return p.resolve(ret);
} else {
var where = [];
var clauses = [];
var replacements = [];
searchWords.forEach(function(word) {
clauses.push('path LIKE ?');
replacements.push('%' + word + '%');
});
where = [clauses.join(' AND ')].concat(replacements);
models.FSEntry.findAll({
where: where
}).done(function(err, fsentries) {
if (err) {
return p.reject(err);
}
var ret = getContent(buildTree(fsentries), path);
if (ret === null) {
return p.reject('Path not found');
}
p.resolve(ret);
});
}
});
return p;
};
api.addEntry = function(fse) {
pathmap = addEntry(pathmap, fse);
};
api.delEntry = function(path) {
var parts = path.split('/');
var basemap = pathmap;
if (path !== '') {
for (var idx = 0; idx < parts.length; idx++) {
var part = parts[idx];
if (!basemap.contents.hasOwnProperty(part)) {
return;
} else if (idx === parts.length - 1) {
delete basemap.contents[part];
} else {
basemap = basemap.contents[part];
}
}
}
};
api.reloadAllEntries = function() {
console.log('pm reload');
startupPromise.then(function(models) {
models.FSEntry.findAll().success(function(fsentries) {
pathmap = createFSEntry();
fsentries.forEach(api.addEntry);
});
});
};
dependencies.eventBus.on('fs-change', api.reloadAllEntries);
dependencies.eventBus.on('server-removed', api.reloadAllEntries);
database(function(err, models) {
models.FSEntry.findAll().success(function(fsentries) {
pathmap = buildTree(fsentries);
startupPromise.resolve(models);
});
});
return api;
};