269 lines
6.7 KiB
Nix
269 lines
6.7 KiB
Nix
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{ depot, lib, pkgs, ... }:
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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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cheddar
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;
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inherit (pkgs)
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mandoc
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coreutils
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fetchurl
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writers
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;
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bins = getBins cheddar [ "cheddar" ]
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// getBins mandoc [ "mandoc" ]
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// getBins coreutils [ "cat" "mv" "mkdir" ]
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;
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normalizeDrv = fetchurl {
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url = "https://necolas.github.io/normalize.css/8.0.1/normalize.css";
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sha256 = "04jmvybwh2ks4dlnfa70sb3a3z3ig4cv0ya9rizjvm140xq1h22q";
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};
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execlineStdoutInto = target: line: [
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"redirfd"
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"-w"
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"1"
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target
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] ++ line;
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# I will not write a pure nix markdown renderer
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# I will not write a pure nix markdown renderer
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# I will not write a pure nix markdown renderer
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# I will not write a pure nix markdown renderer
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# I will not write a pure nix markdown renderer
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markdown = md:
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let
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html = runExecline.local "rendered-markdown"
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{
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stdin = md;
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}
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([
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"importas"
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"-iu"
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"out"
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"out"
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] ++ execlineStdoutInto "$out" [
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bins.cheddar
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"--about-filter"
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"description.md"
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]);
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in
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builtins.readFile html;
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indexTemplate = { title, description, pages ? [ ] }: ''
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<!doctype html>
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<html>
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<head>
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<meta charset="utf-8">
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<title>${title}</title>
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<link rel="stylesheet" type="text/css" href="style.css"/>
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</head>
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<body>
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<div class="index-text">
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<h1>${title}</h1>
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${markdown description}
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<h2>man pages</h2>
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<ul>
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${lib.concatMapStrings ({ name, section, ... }: ''
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<li><a href="${name}.${toString section}.html">${name}(${toString section})</a></li>
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'') pages}
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</ul>
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</div>
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</body>
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</html>
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'';
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defaultStyle = import ./defaultStyle.nix { };
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# This deploy script automatically copies the build result into
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# a TARGET directory and marks it as writeable optionally.
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# It is exposed as the deploy attribute of the result of
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# htmlman, so an htmlman expression can be used like this:
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# nix-build -A deploy htmlman.nix && ./result target_dir
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deployScript = title: drv: writers.writeDash "deploy-${title}" ''
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usage() {
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printf 'Usage: %s [-w] TARGET\n\n' "$0"
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printf 'Deploy htmlman documentation to TARGET directory.\n\n'
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printf ' -h Display this help message\n'
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printf ' -w Make TARGET directory writeable\n'
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}
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if test "$#" -lt 1; then
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usage
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exit 100
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fi
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writeable=false
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while test "$#" -gt 0; do
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case "$1" in
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-h)
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usage
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exit 0
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;;
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-w)
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writeable=true
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;;
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-*)
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usage
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exit 100
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;;
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*)
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if test -z "$target"; then
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target="$1"
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else
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echo "Too many arguments"
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exit 100
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fi
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;;
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esac
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shift
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done
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if test -z "$target"; then
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echo "Missing TARGET"
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usage
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exit 100
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fi
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set -ex
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mkdir -p "$target"
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cp -RTL --reflink=auto "${drv}" "$target"
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if $writeable; then
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chmod -R +w "$target"
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fi
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'';
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htmlman =
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{ title
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# title of the index page
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, description ? ""
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# description which is displayed after
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# the main heading on the index page
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, pages ? [ ]
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# man pages of the following structure:
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# {
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# name : string;
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# section : int;
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# path : either path string;
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# }
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# path is optional, if it is not given,
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# the man page source must be located at
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# "${manDir}/${name}.${toString section}"
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, manDir ? null
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# directory in which man page sources are located
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, style ? defaultStyle
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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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{
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derivationArgs = {
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inherit index style;
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passAsFile = [ "index" "style" ];
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};
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}
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([
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"multisubstitute"
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[
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"importas"
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"-iu"
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"out"
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"out"
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"importas"
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"-iu"
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"index"
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"indexPath"
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"importas"
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"-iu"
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"style"
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"stylePath"
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]
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"if"
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[ bins.mkdir "-p" "$out" ]
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"if"
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[ bins.mv "$index" "\${out}/index.html" ]
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"if"
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(execlineStdoutInto "\${out}/style.css" [
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"if"
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([
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bins.cat
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] ++ lib.optional normalizeCss normalizeDrv
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++ [
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"$style"
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])
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])
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# let mandoc check for available man pages
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"execline-cd"
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"${manDir}"
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] ++ lib.concatMap
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({ name, section, ... }@p:
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execlineStdoutInto "\${out}/${name}.${toString section}.html" [
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"if"
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[
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bins.mandoc
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"-mdoc"
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"-T"
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"html"
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"-O"
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mandocOpts
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(resolvePath p)
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]
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])
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pages);
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in
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html // {
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deploy = deployScript title html;
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};
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in
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htmlman
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