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#!/usr/bin/env lua
-- A compiler for "Autocento of the breakfast table" by Case Duckworth
-- check it in action at: www.autocento.me
-- Usage: `lua compile.lua [options] <files>
-- Where [options] are
-- -- -html: compiles html files
-- -- -river: compiles river files (only words, one per line)
-- -- -lozenge: updates lozenge.js file
-- vim: fdm=indent
defaults = {}
defaults.dirs = {
root = "/d/Copy/projects/autocento/",
src = "/d/Copy/projects/autocento/src/",
lua = "/d/Copy/projects/autocento/lua/",
js = "/d/Copy/projects/autocento/js/",
css = "/d/Copy/projects/autocento/css/",
}
defaults.files = {
lozenge = defaults.dirs.js .. "lozenge.js",
}
defaults.formats = {
html = {
output_dir = defaults.dirs.root,
extension = "html",
pandoc_args = {
from = "markdown",
to = "html5",
template = ".template.html",
"smart",
"mathml",
"section-divs",
}
},
river = {
output_dir = defaults.dirs.root .. "river/",
extension = "river",
pandoc_args = {
from = "markdown",
to = defaults.dirs.lua.."river.lua",
},
},
}
defaults.compile_args = {
'-html',
'-river',
'-lozenge',
}
helpers = {
-- Little helper functions
filter = function (list, filter)
-- Filter a list.
-- 1st return is list of terms that match.
-- 2nd return is list of terms that don't match.
local output_match = {}
local output_nomatch = {}
for _,v in ipairs(list) do
if string.match(v, filter) then
output_match[#output_match+1] = v
else
output_nomatch[#output_nomatch+1] = v
end
end
return output_match, output_nomatch
end,
in_table = function (table, term)
-- Search for term in table
for k,v in pairs(table) do
if v == term then
return k
end
end
return nil
end,
tsub = function (table, pattern, replace, i)
-- gsub on every term in a table
local output = {}
if i then -- 'i' option just does ipair part of table
for k,v in ipairs(table) do
output[k] = v:gsub(pattern, replace)
end
else
for k,v in pairs(table) do
output[k] = v:gsub(pattern, replace)
end
end
return output
end,
scandir = function (directory)
-- Find all files in a directory
local i, t, popen = 0, {}, io.popen
for filename in popen('ls -a "'..directory..'"'):lines() do
i = i+1
t[i] = filename
end
return t
end
}
function compile (files, format_args)
-- Run pandoc on <files>, producing <output_format>, with [pandoc_args].
local errors = 0
if not format_args then
format_args = defaults.formats[output_format]
end
print("Compiling files to "..format_args.extension.." ...")
args = format_args.pandoc_args
for _, file in pairs(files) do
local pandoc_run = {
'pandoc',
'-f', args.from,
'-t', args.to,
'-o',
file:gsub('%.%a+$', "."..format_args.extension)
}
if args.template then
table.insert(pandoc_run, '--template="'..args.template..'"')
end
for _,a in ipairs(args) do
pandoc_run[#pandoc_run+1] = a:gsub("^", "--")
end
table.insert(pandoc_run, file)
for k,v in pairs(pandoc_run) do
print(k, v)
end
if not os.execute(table.concat(pandoc_run, " ")) then
errors = errors+1
end
io.write(".")
end
print("Compiling "..#files.." files completed with "..errors.." errors.")
end
function move (files, destination)
-- Move files to destination
print("Moving files to "..destination.." ...")
local errors = 0
for _, file in pairs(files) do
if not os.execute("mv "..file.." "..destination) then
errors = errors+1
end
end
print("Moving "..#files.." completed with "..errors.." errors.")
end
function lozenge_list (files, blacklist)
-- Produce list for placement in lozenge.js
local output = {}
for _,file in pairs(files) do
-- table.insert(output, #output+1, file:gsub('.*', '"%0"'))
output[#output+1] = file:gsub(".*", '"%0",')
end
if blacklist then
for _,unwanted in pairs(blacklist) do
_,output = helpers.filter(files, unwanted)
end
end
output = table.concat(output, " ")
output = "var files = ["..output
output = output:gsub('"",', '')
output = output:gsub(",$", "]")
print(output)
end
local args, files = helpers.filter(arg, "^%-")
if not files or #files == 0 then
-- Error: need files to work on!
-- TODO: don't technically need file list for -lozenge
print("ERROR: No file list.")
os.exit(1)
end
basenames = helpers.tsub(files, "^.*/", "")
basenames = helpers.tsub(files, "%.%a+$", "")
if not args or #args == 0 or args == { "-all" } then
args = defaults.compile_args
end
-- Option parsing
if helpers.in_table(args, "-html") then
compile(files, defaults.formats.html)
move(helpers.tsub(basenames, "$", "%0.html"),
defaults.formats.html.output_dir)
end
if helpers.in_table(args, "-river") then
compile(files, defaults.formats.river)
move(helpers.tsub(basenames, ".*", "%0.river"),
defaults.formats.river.output_dir)
end
if helpers.in_table(args, "-lozenge") then
-- TODO: should probably break this out into a function
print("Updating lozenge.js file list...")
local htmls = helpers.filter(helpers.scandir(defaults.dirs.root),
"html$")
local f = assert(io.open(defaults.files.lozenge, "r"))
local buffer = {}
for line in f:lines() do
if line:find("var files=") then
table.insert(buffer, lozenge_list(htmls))
else
table.insert(buffer, line)
end
end
f:close()
-- Write the file we've just read
local F = assert(io.open(defaults.files.lozenge, "w"))
F:write(table.concat(buffer, "\n"))
F:close()
print("Done.")
end
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