@knennigtri/merge-markdown
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Prepare input files to merge together and optionally output html/pdf/word presentation
286 lines (285 loc) ā¢ 19.9 kB
JavaScript
;
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var manifestUtil = require("./manifest.js");
var fs = require("fs");
var fsPromises = require("fs").promises;
var path = require("path");
var _require = require("util"),
promisify = _require.promisify;
var _require2 = require("child_process"),
execFile = _require2.execFile;
var execFileAsync = promisify(execFile);
var wkhtmltopdf = require("wkhtmltopdf");
var debug = require("debug")("presentation");
var debugPandoc = require("debug")("pandoc");
var debugPandocOptions = require("debug")("pandoc:options");
var debugPandocDefaults = require("debug")("pandoc:options:defaults");
var debugWkhtmltopdf = require("debug")("pdf");
var debugWkhtmltopdfOptions = require("debug")("pdf:options");
var debugPdfDefaults = require("debug")("pdf:options:defaults");
exports.debbugOptions = {
"presentation": "",
"html": "pandoc messages for html",
"html:options": "pandoc options messages",
"pdf": "wkhtmltopdf messages for pdf",
"pdf:options": "wkhtmltopdf options messages"
};
var EXTS = {
pdf: ".pdf",
html: ".html",
docx: ".docx"
};
exports.EXTS = EXTS;
function build(_x, _x2, _x3) {
return _build.apply(this, arguments);
} // Input and Output files are expected to be ABS
function _build() {
_build = _asyncToGenerator(/*#__PURE__*/_regeneratorRuntime().mark(function _callee(inputFile, outputFormat, manifestFileStr) {
var manifest, manifestOutputName, manifestOutputPandoc, manifestOutputWkhtmltopdf, fileNames, generatedFiles, ext, fileName, pandocOutputExt, resultPandocFile, inputFileParsed, pdfFileName, outputNewName, outputPath, outputFile;
return _regeneratorRuntime().wrap(function _callee$(_context) {
while (1) switch (_context.prev = _context.next) {
case 0:
if (outputFormat) {
_context.next = 2;
break;
}
return _context.abrupt("return", inputFile);
case 2:
console.log("\nš Converting to " + outputFormat + "...");
manifest = manifestUtil.getJSON_withABSPaths(manifestFileStr);
manifestOutputName = manifest.output.name;
manifestOutputPandoc = manifest.output.pandoc;
manifestOutputWkhtmltopdf = manifest.output.wkhtmltopdf;
fileNames = [];
generatedFiles = path.parse(inputFile);
for (ext in EXTS) {
fileName = path.join(generatedFiles.dir, "".concat(generatedFiles.name).concat(ext));
fileNames.push(fileName);
}
debug("deleteGeneratedFiles: ".concat(JSON.stringify(fileNames)));
deleteGeneratedFiles(fileNames);
pandocOutputExt = outputFormat.includes(EXTS.docx) ? EXTS.docx : EXTS.html;
_context.next = 15;
return pandocWriteToFile(inputFile, manifestOutputPandoc, pandocOutputExt);
case 15:
resultPandocFile = _context.sent;
if (!outputFormat.includes(EXTS.pdf)) {
_context.next = 24;
break;
}
inputFileParsed = path.parse(inputFile);
pdfFileName = path.join(inputFileParsed.dir, "".concat(inputFileParsed.name).concat(EXTS.pdf));
_context.next = 21;
return wkhtmltopdfWriteToFile(resultPandocFile, manifestOutputWkhtmltopdf, pdfFileName);
case 21:
return _context.abrupt("return", _context.sent);
case 24:
outputNewName = "".concat(path.parse(manifestOutputName).name).concat(pandocOutputExt);
outputPath = path.parse(resultPandocFile).dir;
outputFile = path.join(outputPath, outputNewName);
debug("".concat(path.parse(resultPandocFile).base, " >> ").concat(outputNewName));
_context.prev = 28;
_context.next = 31;
return fsPromises.rename(resultPandocFile, outputFile);
case 31:
return _context.abrupt("return", outputFile);
case 34:
_context.prev = 34;
_context.t0 = _context["catch"](28);
console.error("\nā Error renaming output file:");
console.error(" " + _context.t0.message);
throw _context.t0;
case 39:
case "end":
return _context.stop();
}
}, _callee, null, [[28, 34]]);
}));
return _build.apply(this, arguments);
}
function pandocWriteToFile(_x4, _x5, _x6) {
return _pandocWriteToFile.apply(this, arguments);
} // Input and Output files are expected to be ABS
function _pandocWriteToFile() {
_pandocWriteToFile = _asyncToGenerator(/*#__PURE__*/_regeneratorRuntime().mark(function _callee2(inputFile, pandocParams, outputExt) {
var outputFile, pandocArgs, _yield$execFileAsync, stderr, warningMsg, _warningMsg;
return _regeneratorRuntime().wrap(function _callee2$(_context2) {
while (1) switch (_context2.prev = _context2.next) {
case 0:
debug("Creating ".concat(outputExt, " using Pandoc..."));
outputFile = path.join(path.parse(inputFile).dir, "temp".concat(outputExt));
pandocArgs = buildPandocArgsArray(pandocParams, outputFile);
debugPandoc("input: " + inputFile);
debugPandoc("Args: " + JSON.stringify(pandocArgs));
_context2.prev = 5;
_context2.next = 8;
return execFileAsync("pandoc", [inputFile].concat(_toConsumableArray(pandocArgs)));
case 8:
_yield$execFileAsync = _context2.sent;
stderr = _yield$execFileAsync.stderr;
// Show any warnings even on success
if (stderr && stderr.trim()) {
warningMsg = stderr.trim();
console.log(" ā " + warningMsg.split("\n")[0]);
debugPandoc("Full output: " + warningMsg);
}
console.log(" ā Generated " + path.parse(outputFile).base);
return _context2.abrupt("return", outputFile);
case 15:
_context2.prev = 15;
_context2.t0 = _context2["catch"](5);
if (!fs.existsSync(outputFile)) {
_context2.next = 23;
break;
}
// File created successfully, stderr was just a warning
if (_context2.t0.stderr) {
_warningMsg = _context2.t0.stderr.trim();
if (_warningMsg) {
console.log(" ā Pandoc warning: " + _warningMsg.split("\n")[0]);
debugPandoc("Full warning: " + _warningMsg);
}
}
console.log(" ā Generated " + path.parse(outputFile).base);
return _context2.abrupt("return", outputFile);
case 23:
// Real error - file not created
console.error("\nā Pandoc error:");
if (_context2.t0.code === "ENOENT") {
console.error(" Pandoc not found. Make sure it's installed and in your PATH");
console.error(" Install: https://pandoc.org/installing.html");
} else {
console.error(" " + (_context2.t0.stderr ? _context2.t0.stderr.trim() : _context2.t0.message));
console.error(" Docs: https://pandoc.org/MANUAL.html");
}
throw _context2.t0;
case 26:
case "end":
return _context2.stop();
}
}, _callee2, null, [[5, 15]]);
}));
return _pandocWriteToFile.apply(this, arguments);
}
function wkhtmltopdfWriteToFile(inputFile, wkhtmltopdfParams, outputFile) {
debug("Creating PDF using wkhtmltopdf...");
var options = buildWkhtmltopdfOptions(wkhtmltopdfParams, outputFile);
debugWkhtmltopdf("input: " + inputFile);
debugWkhtmltopdf("Args: " + JSON.stringify(options, null, 2));
return new Promise(function (resolve, reject) {
wkhtmltopdf(fs.createReadStream(inputFile), options, function (err) {
if (err) {
var errMsg = err.toString();
console.error("\nā wkhtmltopdf error:");
if (errMsg.includes("spawn wkhtmltopdf ENOENT")) {
console.error(" wkhtmltopdf not found. Make sure it's installed and in your PATH");
console.error(" Install: http://wkhtmltopdf.org/downloads.html");
} else if (errMsg.includes("EACCES")) {
console.error(" Permission denied accessing file");
console.error(" " + errMsg);
} else if (errMsg.includes("Exit with code")) {
// wkhtmltopdf returned non-zero exit code
var lines = errMsg.split("\n").filter(function (l) {
return l.trim();
});
console.error(" " + lines[0]);
if (lines.length > 1) {
lines.slice(1, 4).forEach(function (line) {
return console.error(" " + line);
});
}
console.error(" Docs: http://wkhtmltopdf.org/usage/wkhtmltopdf.txt");
} else {
console.error(" " + errMsg.split("\n")[0]);
console.error(" Docs: http://wkhtmltopdf.org/usage/wkhtmltopdf.txt");
}
reject(err);
} else {
console.log(" ā Generated " + path.parse(outputFile).base);
resolve(outputFile);
}
});
});
}
function buildPandocArgsArray(params, fileName) {
// Build args as array for execFile
// Don't use --quiet so we can see useful warnings
var argsArray = ["-o", fileName];
debugPandocDefaults("Base args: " + JSON.stringify(argsArray));
if (params) {
for (var key in params) {
var paramValue = params[key].trim();
if (paramValue.includes("-o")) {
debugPandocOptions("Arg [ -o ] cannot be changed. Ignoring.");
} else {
debugPandocOptions("Arg added: " + paramValue);
// Split args that have spaces (e.g., "-c mystyle.css" becomes ["-c", "mystyle.css"])
var splitArgs = paramValue.match(/(?:[^\s"]+|"[^"]*")+/g) || [];
argsArray.push.apply(argsArray, _toConsumableArray(splitArgs.map(function (arg) {
return arg.replace(/^"(.*)"$/, "$1");
})));
}
}
} else {
debugPandoc("No pandoc Args given in manifest. Using defaults.");
}
debugPandocOptions("Final Args: " + JSON.stringify(argsArray));
return argsArray;
}
function buildWkhtmltopdfOptions(params, fileName) {
debugWkhtmltopdf("Adding wkhtmltopdf options from Manifest");
var defaultOptions = {
output: fileName,
enableLocalFileAccess: true,
disableSmartShrinking: true,
marginBottom: "1in",
marginTop: "1in",
marginLeft: ".7in",
marginRight: ".7in",
pageSize: "Letter",
footerLine: true,
footerCenter: "Page [page]"
};
debugPdfDefaults(defaultOptions);
var finalOptions = defaultOptions;
if (params) {
for (var key in params) {
if (key == "enableLocalFileAccess" || key == "disableSmartShrinking" || key == "output") {
debugWkhtmltopdfOptions("Option [ " + key + " ] cannot be changed for output. Ignoring.");
} else {
debugWkhtmltopdfOptions("Updating [" + key + "] to: " + params[key]);
finalOptions[key] = params[key];
}
}
debugWkhtmltopdfOptions("Final Args: " + finalOptions);
return finalOptions;
}
debugWkhtmltopdf("No options given in manifest. Using Default wkhtmltopdf options.");
return finalOptions;
}
function deleteGeneratedFiles(fileArray) {
fileArray.forEach(function (filePath) {
if (fs.existsSync(filePath)) {
debug("Deleting: " + filePath);
fs.unlinkSync(filePath);
}
});
}
exports.build = build;