blog-static/build-agda-html.rb

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require "json"
require "set"
require "optparse"
require "fileutils"
# For target_dir, use absolute paths because when invoking Agda, we'll be
# using chdir.
root_path = "code"
target_dir = File.expand_path "code"
data_file = "data/submodules.json"
OptionParser.new do |opts|
opts.banner = "Usage: build-agda-html.rb [options]"
opts.on("--root-path=PATH", "Search for Agda project folders in the given location") do |f|
root_path = f
end
opts.on("--target-dir=PATH", "Generate HTML files into the given directory") do |f|
target_dir = File.expand_path f
end
opts.on("--data-file=FILE", "Specify the submodules.json that encodes nested submodule structure") do |f|
data_file = f
end
end.parse!
files = ARGV
code_paths = Dir.entries(root_path).select do |f|
File.directory?(File.join(root_path, f)) and f != '.' and f != '..'
end.to_set
code_paths += JSON.parse(File.read(data_file)).keys if File.exists? data_file
# Extending code_paths from submodules.json means that nested Agda modules
# have their root dir correctly set.
max_path = ->(path) {
code_paths.max_by do |code_path|
count = 0
path.chars.zip(code_path.chars) do |c1, c2|
break unless c1 == c2
count += 1
end
next count
end
}
files_for_paths = {}
Dir.glob("**/*.agda", base: root_path) do |agda_file|
best_path = max_path.call(agda_file)
files_for_path = files_for_paths.fetch(best_path) do
files_for_paths[best_path] = []
end
files_for_path << agda_file[best_path.length + File::SEPARATOR.length..-1]
end
original_wd = Dir.getwd
files_for_paths.each do |path, files|
Dir.chdir(original_wd)
Dir.chdir(File.join(root_path, path))
html_dir = File.join [target_dir, path, "html"]
FileUtils.mkdir_p html_dir
files.each do |file|
command = "#{ARGV[0]} #{file} --html --html-dir=#{html_dir}"
puts command
puts `#{command}`
# Allow some programs to fail (e.g., IO.agda in SPA without --guardedness)
# fail unless $? == 0
end
end