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WindowsReleaseService.js
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WindowsReleaseService.js
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/**
* Windows Release Service
*/
var _ = require('lodash');
var semver = require('semver');
var stripBom = require('strip-bom');
var ChannelService = require('./ChannelService');
var WindowsReleaseService = {};
// Ordered list of supported pre-release channels
var PRERELEASE_CHANNEL_MAGINITUDE = 1000;
var PRERELEASE_CHANNELS = _(ChannelService.availableChannels)
.without('stable')
.reverse()
.value();
// RELEASES parsing
var releaseRegex = /^([0-9a-fA-F]{40})\s+(\S+)\s+(\d+)[\r]*$/;
/**
* Hash a prerelease
* @param {String} s [description]
* @return {String} [description]
*/
function hashPrerelease(s) {
if (_.isString(s[0])) {
return (_.indexOf(PRERELEASE_CHANNELS, s[0]) + 1) * PRERELEASE_CHANNEL_MAGINITUDE + (s[1] || 0);
} else {
return s[0];
}
}
// Map a semver version to a windows version
WindowsReleaseService.normVersion = function(tag) {
var parts = new semver.SemVer(tag);
var prerelease = '';
if (parts.prerelease && parts.prerelease.length > 0) {
prerelease = hashPrerelease(parts.prerelease);
}
return [
parts.major,
parts.minor,
parts.patch
].join('.') + (prerelease ? '.' + prerelease : '');
};
// Map a windows version to a semver
WindowsReleaseService.toSemver = function(tag) {
var parts = tag.split('.');
var version = parts.slice(0, 3).join('.');
var prerelease = Number(parts[3]);
// semver == windows version
if (!prerelease) return version;
var channelId = Math.floor(prerelease / CHANNEL_MAGINITUDE);
var channel = CHANNELS[channelId - 1];
var count = prerelease - (channelId * CHANNEL_MAGINITUDE);
return version + '-' + channel + '.' + count;
};
// Parse RELEASES file
// https://github.com/Squirrel/Squirrel.Windows/blob/0d1250aa6f0c25fe22e92add78af327d1277d97d/src/Squirrel/ReleaseExtensions.cs#L19
WindowsReleaseService.parse = function(content) {
return _.chain(stripBom(content))
.replace('\r\n', '\n')
.split('\n')
.map(function(line) {
var parts = releaseRegex.exec(line);
if (!parts) return null;
var filename = parts[2];
var isDelta = filename.indexOf('-full.nupkg') == -1;
var filenameParts = filename
.replace('.nupkg', '')
.replace('-delta', '')
.replace('-full', '')
.split(/\.|-/)
.reverse();
var version = _.chain(filenameParts)
.filter(function(x) {
return /^\d+$/.exec(x);
})
.reverse()
.value()
.join('.');
return {
sha: parts[1],
filename: filename,
size: Number(parts[3]),
isDelta: isDelta,
version: version,
semver: this.toSemver(version)
};
})
.compact()
.value();
};
// Generate a RELEASES file
WindowsReleaseService.generate = function(assets) {
return _.map(assets, function(asset) {
return [
asset.hash,
asset.name.replace('-ia32', ''),
asset.size
].join(' ');
})
.join('\n');
};
module.exports = WindowsReleaseService;