7b4a545699
This adds an interim placeholder page for gopher://sterni.lv and additionally my preexisting Nix-based static site generator for gophermap supporting servers. It is based on building a nested Nix data structure representing the directory structure of the resulting site which then resolves to a bunch of fine grained derivations. Change-Id: Id6c0b60cfe8d9d4df6a3700d96ed48b7df02ce58 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7292 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
109 lines
2.6 KiB
Nix
109 lines
2.6 KiB
Nix
{ depot, pkgs, lib, ... }:
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let
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inherit (pkgs)
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runCommand
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writeText
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;
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inherit (depot.users.sterni.nix.build)
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buildGopherHole
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;
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fileTypes = {
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# RFC1436
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text = "0";
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menu = "1";
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cso = "2";
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error = "3";
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binhex = "4";
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dos = "5";
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uuencoded = "6";
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index-server = "7";
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telnet = "8";
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binary = "9";
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mirror = "+";
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gif = "g";
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image = "I";
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tn3270 = "T";
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# non-standard
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info = "i";
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html = "h";
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};
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buildFile = { file, name, fileType ? fileTypes.text }:
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runCommand name
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{
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passthru = {
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# respect the file type the file derivation passes
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# through. otherwise use explicitly set type or
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# default value.
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fileType = file.fileType or fileType;
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};
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} ''
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ln -s ${file} "$out"
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'';
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buildGopherMap = dir:
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let
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/* strings constitute an info line or an empty line
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if their length is zero. sets that contain a menu
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value have that added to the gophermap as-is.
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all other entries should be a set which can be built using
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buildGopherHole and is linked by their name. The resulting
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derivation is expected to passthru a fileType containing the
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gopher file type char of themselves.
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*/
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gopherMapLine = e:
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if builtins.isString e
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then e
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else if e ? menu
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then e.menu
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else
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let
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drv = buildGopherHole e;
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title = e.title or e.name;
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in
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"${drv.fileType}${title}\t${drv.name}";
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in
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writeText ".gophermap" (lib.concatMapStringsSep "\n" gopherMapLine dir);
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buildDir =
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{ dir, name, ... }:
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let
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# filter all entries out that have to be symlinked:
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# sets with the file or dir attribute
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drvOnly = builtins.map buildGopherHole (builtins.filter
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(x: !(builtins.isString x) && (x ? dir || x ? file))
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dir);
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gopherMap = buildGopherMap dir;
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in
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runCommand name
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{
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passthru = {
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fileType = fileTypes.dir;
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};
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}
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(''
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mkdir -p "$out"
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ln -s "${gopherMap}" "$out/.gophermap"
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'' + lib.concatMapStrings
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(drv: ''
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ln -s "${drv}" "$out/${drv.name}"
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'')
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drvOnly);
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in
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{
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# Dispatch into different file / dir handling code
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# which is mutually recursive with this function.
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__functor = _: args:
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if args ? file then buildFile args
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else if args ? dir then buildDir args
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else builtins.throw "Unrecognized gopher hole item type: "
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+ lib.generators.toPretty { } args;
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inherit fileTypes;
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}
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