+'use strict';
+
+// this may need customizations between packages
+const osMap = {
+ macos: /\b(apple|mac|darwin|iPhone|iOS|iPad)/i,
+ linux: /\b(linux)/i,
+ windows: /\b(win|microsoft|msft)/i,
+ sunos: /\b(sun)/i,
+ aix: /\b(aix)/i
+};
+
+// evaluation order matters
+// (i.e. otherwise x86 and x64 can cross match)
+var archArr = [
+ 'amd64', // first and most likely match
+ 'arm64',
+ 'x86',
+ 'ppc64le',
+ 'ppc64',
+ 'armv7l',
+ 'armv6l',
+ 's390x'
+];
+var archMap = {
+ amd64: /(amd.?64|x64|[_\-]64)/i,
+ x86: /(86)\b/i,
+ ppc64le: /\b(ppc64le)/i,
+ ppc64: /\b(ppc64)\b/i,
+ arm64: /\b(arm64|arm)/i,
+ armv7l: /\b(armv?7l)/i,
+ armv6l: /\b(armv?6l)/i,
+ s390x: /\b(s390x)/i
+};
+
+function normalize(all) {
+ all.releases.forEach(function (rel) {
+ if (!rel.os) {
+ rel.os =
+ Object.keys(osMap).find(function (regKey) {
+ //console.log('release os:', rel.download, regKey, osMap[regKey]);
+ return osMap[regKey].test(rel.download);
+ }) || 'unknown';
+ }
+
+ if (!rel.arch) {
+ archArr.some(function (regKey) {
+ //console.log('release arch:', rel.download, regKey, archMap[regKey]);
+ var arch = rel.download.match(archMap[regKey]) && regKey;
+ if (arch) {
+ rel.arch = arch;
+ return true;
+ }
+ })[0];
+ }
+
+ if (!rel.ext) {
+ // pkg-v1.0.tar.gz => ['gz', 'tar', '0', 'pkg-v1']
+ // pkg-v1.0.tar => ['tar', '0' ,'pkg-v1']
+ // pkg-v1.0.zip => ['zip', '0', 'pkg-v1']
+ var exts = rel.download.split('.').reverse().slice(0, 2);
+ var ext;
+ if ('tar' === exts[1]) {
+ rel.ext = exts.reverse().join('.');
+ } else if ('tgz' == exts[0]) {
+ rel.ext = 'tar.gz';
+ } else {
+ rel.ext = exts[0];
+ }
+ }
+ });
+ return all;
+}
+
+module.exports = normalize;