gitbook-plugin-include-codeblock/lib/language-detection.js

GitBook plugin for including file

// LICENSE : MIT
"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.getLang = getLang;
exports.languageAceModeFix = languageAceModeFix;
exports.lookupLanguageByAceMode = lookupLanguageByAceMode;
exports.lookupLanguageByExtension = lookupLanguageByExtension;

var _options = require("./options.js");

var path = require("path");

var languageMap = require("language-map");

// Workaround for not working languages.
// Redefine aceMode locally.
// @param {string}
// @return {string}
function languageAceModeFix(resultAceMode) {
  if (resultAceMode == "c_cpp") {
    resultAceMode = "cpp";
  }

  return resultAceMode;
}
/**
 * Return aceMode from lang in kvMap.
 * @param {object} kvMap
 * @return {object}
 */


function lookupLanguageByAceMode(kvMap) {
  var resultAceMode;
  var matchLang = kvMap.lang;
  Object.keys(languageMap).some(function (langKey) {
    var aceMode = languageMap[langKey].aceMode;

    if (matchLang === aceMode) {
      resultAceMode = aceMode;
      return resultAceMode;
    }

    return undefined;
  });
  return resultAceMode;
}
/**
 * Return aceMode from file extension or lang in kvMap, if is
 * an extension.
 * @param {object} kvMap
 * @param {string} filePath
 * @return {object}
 */


function lookupLanguageByExtension(kvMap, filePath) {
  var lang = kvMap.lang;
  var ext; // Check first if map `lang` is an extension string.

  var matchext = /(.+)/g.exec(lang);

  if (matchext != null) {
    ext = matchext[1];
  } else {
    // Load from file extension.
    ext = path.extname(filePath);
  }

  var aceMode;
  Object.keys(languageMap).some(function (langKey) {
    var extensions = languageMap[langKey].extensions;

    if (!extensions) {
      return false;
    }

    return extensions.some(function (extension) {
      if (ext === extension) {
        aceMode = languageMap[langKey].aceMode;
      }

      return false;
    });
  });
  return aceMode;
}
/**
 * Update key-value map lang with aceMode lang.
 * @param {object} kvMap
 * @param {string} filePath
 * @return {object}
 */


function getLang(kvMap, filePath) {
  var aceMode; // Retrieve ace mode from lang.

  if (kvMap.lang !== _options.defaultKeyValueMap.lang) {
    aceMode = lookupLanguageByAceMode(kvMap);
  } // Retrieve ace mode from file ext or lang ext.


  if (aceMode === undefined) {
    aceMode = lookupLanguageByExtension(kvMap, filePath);
  } // Ace mode not found, keep default.


  if (aceMode === undefined) {
    console.warn("include-codeblock: unknown language `" + kvMap.lang + "`, use default");
    return kvMap;
  }

  if (kvMap.fixlang) {
    aceMode = languageAceModeFix(aceMode);
  }

  var kvm = Object.assign({}, kvMap);
  kvm.lang = aceMode;
  return Object.freeze(kvm);
}
//# sourceMappingURL=language-detection.js.map