// Script to pre-process the asciidoc sources for generating LaTeX.

// Adjusts some stylistic things to satisfy No Starch's style, and

// fixes up svg images to point at pdf versions of the images.

var fs = require("fs"), child = require("child_process");

var infile, nostarch = false;

for (var i = 2; i < process.argv.length; i++) {

var arg = process.argv[i];

if (arg == "--nostarch") nostarch = true;

else infile = arg;

}

var instream;

if (infile == "-") {

instream = process.stdin;

instream.resume();

} else {

instream = fs.createReadStream(infile);

}

var titleCaseSmallWords = "a an the at by for in of on to up and as but it or nor if console.log".split(" ");

var input = "";

instream.on("data", function(chunk) {

input += chunk;

});

instream.on("end", function() {

if (infile != "-")

input = ":docid: " + infile.match(/^\d{2}_(.*?)\.txt/)[1] + "\n" + input;

process.stdout.write(input.replace(/\n===? (.*?) ===?|”([.,:;])|\nimage::img\/(.+?)\.(\w+)(\[.*\])?|link:[^\.]+\.html#(.*?)\[|!!(hint)!![^]+?!!hint!!(?:\n|$)/g,

function(match, title, quoted, imgName, imgType, imgOpts, link, solution) {

if (title) { // Section title, must be converted to title case

if (!nostarch) return match;

var kind = /^\n(=*)/.exec(match)[1];

return "\n" + kind + " " + title.split(" ").map(function(word) {

if (titleCaseSmallWords.indexOf(word) == -1)

return word[0].toUpperCase() + word.slice(1);

else

return word;

}).join(" ") + " " + kind;

} else if (quoted) { // Move punctuation into quotes

if (!nostarch) return match;

return quoted + "”";

} else if (imgName) { // Image file

return "\nimage::" + convertImage(imgName, imgType) + (!imgOpts ? "" : nostarch ? imgOpts : calcWidth(imgOpts));

} else if (link) {

return "link:" + link + "[";

} else if (solution) {

return "";

}

}));

});

function calcWidth(opts) {

var replaced = false;

opts = opts.replace(/width=\"([\d.]+)cm\"/, function(m, w) {

replaced = true;

return "width=\"" + (Number(w)/11).toFixed(2) + "\\\\textwidth\"";

});

if (!replaced) return opts.slice(0, opts.length - 1) + ",width=\"0.95\\\\textwidth\"]";

else return opts;

}

function convertImage(name, type) {

var oldName = "img/" + name + "." + type;

if (type == "svg") {

var newName = "img/generated/" + name + ".pdf";

try {

var newAge = fs.statSync(newName).atime;

} catch (e) {

newAge = 0;

}

return newName;

}

return oldName;

}