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Split out the parsing of semantic version strings

This commit is contained in:
Jermolene 2013-12-02 09:57:19 +00:00
parent 34ae1387a5
commit 026a27c1ab
1 changed files with 28 additions and 7 deletions
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35
boot/boot.js
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@ -344,14 +344,35 @@ $tw.utils.resolvePath = function(sourcepath,rootpath) {
};
/*
Returns true if the `actual` version is greater than or equal to the `required` version. Both are in `x.y.z` format.
Parse a semantic version string into its constituent parts
*/
$tw.utils.checkVersions = function(required,actual) {
var targetVersion = required.split("."),
currVersion = actual.split("."),
diff = [parseInt(targetVersion[0],10) - parseInt(currVersion[0],10),
parseInt(targetVersion[1],10) - parseInt(currVersion[1],10),
parseInt(targetVersion[2],10) - parseInt(currVersion[2],10)];
$tw.utils.parseVersion = function(version) {
var match = /^((\d+)\.(\d+)\.(\d+))(?:-([\dA-Za-z\-]+(?:\.[\dA-Za-z\-]+)*))?(?:\+([\dA-Za-z\-]+(?:\.[\dA-Za-z\-]+)*))?$/.exec(version);
if(match) {
return {
version: match[1],
major: parseInt(match[2],10),
minor: parseInt(match[3],10),
patch: parseInt(match[4],10),
prerelease: match[5],
build: match[6]
};
} else {
return null;
}
};
/*
Returns true if the version string A is greater than the version string B
*/
$tw.utils.checkVersions = function(versionStringA,versionStringB) {
var versionA = $tw.utils.parseVersion(versionStringA),
versionB = $tw.utils.parseVersion(versionStringB),
diff = [
versionA.major - versionB.major,
versionA.minor - versionB.minor,
versionA.patch - versionB.patch
];
return (diff[0] > 0) ||
(diff[0] === 0 && diff[1] > 0) ||
(diff[0] === 0 && diff[1] === 0 && diff[2] > 0);