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Added dotted-version comparator & latest version

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As planned in
https://github.com/badges/shields/issues/490#issuecomment-205550621.

Fixes #490.
This commit is contained in:
Thaddee Tyl 2016-04-05 22:21:23 +02:00
parent 1e24e2624d
commit 7dc09e2e8d
1 changed files with 40 additions and 20 deletions
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60
server.js
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@ -5245,27 +5245,52 @@ function versionColor(version) {
}
}
// Take string versions.
// -1 if v1 < v2, 1 if v1 > v2, 0 otherwise.
function compareDottedVersion(v1, v2) {
var parts1 = /([0-9\.]+)(.*)$/.exec(v1);
var parts2 = /([0-9\.]+)(.*)$/.exec(v2);
if (parts1 != null && parts2 != null) {
var numbers1 = parts1[1];
var numbers2 = parts2[1];
var distinguisher1 = parts1[2];
var distinguisher2 = parts2[2];
var numlist1 = numbers1.split('.').map(function(e) { return +e; });
var numlist2 = numbers2.split('.').map(function(e) { return +e; });
var cmp = listCompare(numlist1, numlist2);
if (cmp !== 0) { return cmp; }
else { return distinguisher1 < distinguisher2? -1:
distinguisher1 > distinguisher2? 1: 0; }
}
return v1 < v2? -1: v1 > v2? 1: 0;
}
// Take a list of string versions.
// Return the latest, or undefined, if there are none.
function latestDottedVersion(versions) {
var len = versions.length;
if (len === 0) { return; }
var version = versions[0];
for (var i = 1; i < len; i++) {
if (compareDottedVersion(version, versions[i]) < 0) {
version = versions[i];
}
}
return version;
}
// Given a list of versions (as strings), return the latest version.
// Return undefined if no version could be found.
function latestVersion(versions) {
var version = '';
var origVersions = versions;
versions = versions.filter(function(version) {
return (/^v?[0-9]/).test(version);
});
semver_versions = versions.map(function(version) {
var matches = /^(v?[0-9]+)(\.[0-9]+)?(-.*)?$/.exec(version);
if (matches) {
version = matches[1] + (matches[2] ? matches[2] : '.0') + '.0' +
(matches[3] ? matches[3] : '');
}
return version;
});
try {
version = semver.maxSatisfying(semver_versions, '');
version = versions[semver_versions.indexOf(version)];
version = semver.maxSatisfying(versions, '');
} catch(e) {
versions = versions.sort();
version = versions[versions.length - 1];
version = latestDottedVersion(versions);
}
if (version === undefined) {
origVersions = origVersions.sort();
@ -5381,20 +5406,15 @@ function phpNumberedVersionData(version) {
}
function listCompare(a, b) {
for (var i = 0; i < a.length; i++) {
var alen = a.length, blen = b.length;
for (var i = 0; i < alen; i++) {
if (a[i] < b[i]) {
return -1;
} else if (a[i] > b[i]) {
return 1;
}
}
if (a.length < b.length) {
return -1;
} else if (a.length > b.length) {
return 1;
} else {
return 0;
}
return alen - blen;
}
// Return a negative value if v1 < v2,