exports.uriToFilename = uriToFilename;

exports.uriToRelativeFilename = uriToRelativeFilename;

exports.filenameToBaseUri = filenameToBaseUri;

exports.uriAbs = uriAbs;

exports.pathBasename = pathBasename;

exports.uriBase = uriBase;

exports.hasSuffix = hasSuffix;

exports.getResourceLink = getResourceLink;

var fs = require('fs');

var path = require('path');

var S = require('string');

function uriToFilename(uri, base) {

var filename = path.join(base, uri);

// Make sure filename ends with '/' if filename exists and is a directory.

// TODO this sync operation can be avoided and can be left

// to do, to other components, see `ldp.get`

try {

var fileStats = fs.statSync(filename);

if (fileStats.isDirectory() && !S(filename).endsWith('/')) {

filename += '/';

} else if (fileStats.isFile() && S(filename).endsWith('/')) {

filename = S(filename).chompRight('/').s;

}

} catch (err) {}

return filename;

}

function uriToRelativeFilename(uri, base) {

var filename = uriToFilename(uri, base);

var relative = path.relative(base, filename);

return relative;

}

function filenameToBaseUri(filename, uri, base) {

var uriPath = S(filename).strip(base).toString();

return uri + '/' + uriPath;

}

function uriAbs(req) {

return req.protocol + '://' + req.get('host');

}

function uriBase(req) {

return uriAbs(req) + (req.baseUrl || '');

}

function pathBasename(fullpath) {

var bname = '';

if (fullpath) {

bname = (fullpath.lastIndexOf('/') === fullpath.length - 1)?'':path.basename(fullpath);

}

return bname;

}

function hasSuffix(path, suffixes) {

for (var i in suffixes) {

if (path.indexOf(suffixes[i], path.length - suffixes[i].length) !== -1) {

return true;

}

}

return false;

}

function getResourceLink(filename, uri, base, suffix, otherSuffix) {

var link = filenameToBaseUri(filename, uri, base);

if (S(link).endsWith(suffix)) {

return link;

} else if (S(link).endsWith(otherSuffix)) {

return S(link).chompRight(otherSuffix).s + suffix;

} else {

return link+suffix;

}

}