muflax65ngodyewp.onion/maintenance/generate.sh

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#!/usr/bin/env bash
IsRubyGem() {
test 200 = "$(curl -sL -w '%{http_code}' https://rubygems.org/api/v1/gems/$1.json -o /dev/null)";
};
Map() {
while read Line; do $* $Line; done
};
Filter() {
X() { $* && (shift; echo $*;) }; Map X $*
};
TopLevelDependencies() {
( # Nanoc isn't an explicit dependency:
echo nanoc;
# We want its filters too; and those aren't referenced in the gemspec.
# But we really don't need all of them. (There are a lot.)
# For now they're being incorporated on an ad-hoc basis:
tr ' ' '\n' <<< "sass kramdown erubis pygments.rb w3c_validators builder";
# Local requires, hopefully there aren't any gems named differently from their imports.
grep -Proh "(?<=require ['\"])[^/'\"]+" ..;
) | sort -u | Filter IsRubyGem
};
GetLatestVersion() {
curl -sL https://rubygems.org/api/v1/gems/$1.json | jq -r '.version'
};
read -r -d '' AWKPrelude <<EOF
@include "join";
function unescape(str) {
gsub("&gt;",">",str);
gsub("&lt;","<",str);
gsub(/^= /,"== ",str);
return str;
}
function ver(str) {
n=split(str,xs,".");
v=xs[1]; for(i=2;i<=n;i++)
v+=xs[i]*(10**(1-i));
return v
}
function unwakka(str) {
if (str ~ /^~>/) {
sub(/^[^ ]+ */,"",str);
n=split(str,xs,".");xs[n-1]++;xs[n]=0;
return(sprintf(">= %s, < %s", str, join(xs,1,n,".")));
} else return str
};
EOF
CompileConstraint() {
awk "$AWKPrelude"'
NF {
printf "%s;", $1;
sub(".*" $1 FS, "");
sub($0, unwakka(unescape($0)));
split($0, xs, ", "); for (x in xs)
split(xs[x],ys," ");
printf "ver($0) %s %s && ", ys[1], ver(ys[2])
print "1"
}
';
};
SatisfyConstraint() {
GemName="$1"; Constraint="$2";
curl -s https://rubygems.org/api/v1/versions/$GemName.json \
| jq -r '.[] | .number' \
| awk "$AWKPrelude ($Constraint){print;exit}"
};
GetDependencies() {
# The RubyGems API doesn't seem to permit retrieving the dependencies of any
# version other than the most recent, so we resort to scraping.
GemName="$1"; GemVersion="$2";
curl -s https://rubygems.org/gems/$GemName/versions/$GemVersion \
| xmllint --xpath '//div[@id="runtime_dependencies"]/div/a//text()' --html 2>/dev/null - \
| CompileConstraint \
| { IFS=";"; while read -r Name Constraint; do
Version="$(SatisfyConstraint "$Name" "$Constraint")"
test -n "$Name" && test -n "$Version" && echo "$Name" "$Version"
done; }
};
GetSHA256() {
nix-prefetch-url https://rubygems.org/downloads/$1.gem 2>/dev/null
};
GemCache="$(mktemp ${TMPDIR:-/tmp}/GEMS.XXXXXXX)";
Gem2Nix() {
GemName=$1; GemVersion="${2:-$(GetLatestVersion $GemName)}";
grep -qE "^$GemName" "$GemCache" || {
echo $GemName >> "$GemCache";
sed 's/^ //;/^$/d' <<< "
$GemName = buildRubyGem ({
name = ''$GemName-$GemVersion'';
sha256 = ''$(GetSHA256 $GemName-$GemVersion)'';
gemPath = [$(GetDependencies "$GemName" "$GemVersion" | cut -d' ' -f1 | tr '\n' ' ')];
ruby = ruby_2_2;
} // optionalAttrs (hasAttr ''$GemName'' hotfix) hotfix.$GemName);
"; GetDependencies "$GemName" "$GemVersion" | Map Gem2Nix
};
};
cat <<EOF
{ pkgs ? import <nixpkgs> {}
}: let
inherit (pkgs)
callPackage buildRubyGem lib ruby_2_2 libtidy
perlPackages pythonPackages glibcLocales;
inherit (lib) optionalAttrs hasAttr mapAttrs;
hotfix = mapAttrs (_: f: f {}) (callPackage <nixpkgs/pkgs/development/interpreters/ruby/bundler-env/default-gem-config.nix> {}) // {
tidy_ffi = {
postInstall = ''
substituteInPlace \$out/lib/ruby/gems/2.2.0/gems/tidy_ffi-0.1.6/lib/tidy_ffi/lib_tidy.rb --replace 'usr' \${libtidy}
'';
};
};
EOF
TopLevelDependencies | Map Gem2Nix
cat <<EOF
in pkgs.stdenv.mkDerivation {
name = "muflax.com";
src = ../.;
LC_ALL="en_US.utf8";
buildInputs =
[$(TopLevelDependencies | tr '\n' ' ')] ++
[perlPackages.ImageExifTool pythonPackages.pygments glibcLocales];
patchPhase = ''
sed -i 's/do$/do |_, _|/' commands/backup/*
'';
buildPhase = ''
nanoc references
nanoc images
for site in blog daily gospel muflax; do
nanoc compile -s \$site
nanoc compress -s \$site
done
'';
installPhase = ''
mv out \$out
'';
}
EOF