feat(users/sterni/htmlman): hyperlink .Xr macro in output
We make use of the -O man=… option of mandoc(1) which allows to convert cross references via the .Xr macro into actual hyperlinks in the output. This can be disabled (by passing "none") or done in two modes: * all: links all .Xr cross references as if they were in $out/%N.%S.html. This will lead to broken links of course. * inManDir: only link to files in $out if the man page is found in manDir, use the template defined in linkXrFallback if not. all is the default, since we don't require all man pages to be in manDir, so it would be potentially confusing if the path attribute was used in the pages list. linkXrFallback uses the debian online man viewer by default currently, since it can be decently hyperlinked and debian has a lot of packages. Other options would be: * https://manpages.ubuntu.com/manpages/latest/en/man%S/%N.%S.html * https://man.archlinux.org/man/%N.%S.en * https://man.openbsd.org/%N.%S * https://www.man7.org/linux/man-pages/man%S/%N.%S.html Change-Id: I1363b9dfdda25cb7383c7310b8115c335444bd3d Reviewed-on: https://cl.tvl.fyi/c/depot/+/2597 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
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@ -4,6 +4,7 @@ let
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inherit (depot.nix)
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getBins
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runExecline
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yants
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;
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inherit (depot.tools)
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@ -156,16 +157,42 @@ let
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# CSS to use as a string
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, normalizeCss ? true
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# whether to include normalize.css before the custom CSS
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, linkXr ? "all"
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# How to handle cross references in the html output:
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#
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# * none: don't convert cross references into hyperlinks
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# * all: link all cross references as if they were
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# rendered into $out by htmlman
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# * inManDir: link to all man pages which have their source
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# in `manDir` and use the format string defined
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# in linkXrFallback for all other cross references.
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, linkXrFallback ? "https://manpages.debian.org/unstable/%N.%S.en.html"
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# fallback link to use if linkXr == "inManDir" and the man
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# page is not in ${manDir}. Placeholders %N (name of page)
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# and %S (section of page) can be used. See mandoc(1) for
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# more information.
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}:
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let
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linkXrEnum = yants.enum "linkXr" [ "all" "inManDir" "none" ];
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index = indexTemplate {
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inherit title description pages;
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};
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resolvePath = { path ? null, name, section }:
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if path != null
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then path
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else "${manDir}/${name}.${toString section}";
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mandocOpts = lib.concatStringsSep "," ([
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"style=style.css"
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] ++ linkXrEnum.match linkXr {
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all = [ "man=./%N.%S.html" ];
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inManDir = [ "man=./%N.%S.html;${linkXrFallback}" ];
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none = [ ];
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});
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html =
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runExecline.local "htmlman-${title}" {
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derivationArgs = {
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@ -188,12 +215,15 @@ let
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"$style"
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])
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])
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# let mandoc check for available man pages
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"execline-cd" "${manDir}"
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] ++ lib.concatMap ({ name, section, ... }@p:
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execlineStdoutInto "\${out}/${name}.${toString section}.html" [
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"if" [
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bins.mandoc
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"-T" "html" "-mdoc"
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"-O" "style=style.css"
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"-mdoc"
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"-T" "html"
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"-O" mandocOpts
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(resolvePath p)
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]
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]) pages);
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