52 lines
1.5 KiB
Nix
52 lines
1.5 KiB
Nix
{ lib }:
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let
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# extractLatestVersionFromHtml :: String -> String
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extractLatestVersionFromHtml = htmlString:
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let
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majorMinorPatchGroup = "([0-9]+\\.[0-9]+\\.[0-9]+)";
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splittedVersions = builtins.split "href=\"${majorMinorPatchGroup}" htmlString;
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stableVersions = builtins.concatLists
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(builtins.filter (e: builtins.isList e)
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splittedVersions);
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in
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if stableVersions == [ ]
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then abort "Failed to extract versions from html."
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else lib.last (builtins.sort builtins.lessThan stableVersions);
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# getHtml :: String -> String
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getHtml = url:
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builtins.readFile (builtins.fetchurl url);
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# getLatestStableVersion :: String
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getLatestStableVersion =
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extractLatestVersionFromHtml
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(getHtml "https://download.documentfoundation.org/libreoffice/stable/");
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# extractSha256FromHtml :: String -> String
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extractSha256FromHtml = htmlString:
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let
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sha256 = (builtins.match ".*([0-9a-fA-F]{64}).*" htmlString);
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in
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if sha256 == [ ]
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then abort "Failed to extract sha256 from html."
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else builtins.head sha256;
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# getSha256 :: String -> String
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getSha256 = dmgUrl: oldVersion: newVersion:
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extractSha256FromHtml (getHtml (getSha256Url dmgUrl oldVersion newVersion));
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# getSha256Url :: String -> String -> String -> String
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getSha256Url = dmgUrl: oldVersion: newVersion:
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(builtins.replaceStrings [ oldVersion ] [ newVersion ] dmgUrl) + ".sha256";
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in
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{
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inherit
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extractLatestVersionFromHtml
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getHtml
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getLatestStableVersion
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extractSha256FromHtml
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getSha256
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getSha256Url;
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}
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