Bar graph added.

2020-07-28 00:48:25 +05:30
parent d0a6e2667d
commit 194b41124d
3468 changed files with 640611 additions and 169 deletions
--- a/node_modules/vega-loader/build/vega-loader.node.js
+++ b/node_modules/vega-loader/build/vega-loader.node.js
@@ -0,0 +1,442 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', { value: true });
+
+var vegaUtil = require('vega-util');
+var d3Dsv = require('d3-dsv');
+var topojsonClient = require('topojson-client');
+var vegaFormat = require('vega-format');
+
+// Matches absolute URLs with optional protocol
+//   https://...    file://...    //...
+const protocol_re = /^([A-Za-z]+:)?\/\//;
+
+// Matches allowed URIs. From https://github.com/cure53/DOMPurify/blob/master/src/regexp.js with added file://
+const allowed_re = /^(?:(?:(?:f|ht)tps?|mailto|tel|callto|cid|xmpp|file|data):|[^a-z]|[a-z+.\-]+(?:[^a-z+.\-:]|$))/i; // eslint-disable-line no-useless-escape
+const whitespace_re = /[\u0000-\u0020\u00A0\u1680\u180E\u2000-\u2029\u205f\u3000]/g; // eslint-disable-line no-control-regex
+
+
+// Special treatment in node.js for the file: protocol
+const fileProtocol = 'file://';
+
+/**
+ * Factory for a loader constructor that provides methods for requesting
+ * files from either the network or disk, and for sanitizing request URIs.
+ * @param {function} fetch - The Fetch API for HTTP network requests.
+ *   If null or undefined, HTTP loading will be disabled.
+ * @param {object} fs - The file system interface for file loading.
+ *   If null or undefined, local file loading will be disabled.
+ * @return {function} A loader constructor with the following signature:
+ *   param {object} [options] - Optional default loading options to use.
+ *   return {object} - A new loader instance.
+ */
+function loaderFactory(fetch, fs) {
+  return function(options) {
+    return {
+      options: options || {},
+      sanitize: sanitize,
+      load: load,
+      fileAccess: !!fs,
+      file: fileLoader(fs),
+      http: httpLoader(fetch)
+    };
+  };
+}
+
+/**
+ * Load an external resource, typically either from the web or from the local
+ * filesystem. This function uses {@link sanitize} to first sanitize the uri,
+ * then calls either {@link http} (for web requests) or {@link file} (for
+ * filesystem loading).
+ * @param {string} uri - The resource indicator (e.g., URL or filename).
+ * @param {object} [options] - Optional loading options. These options will
+ *   override any existing default options.
+ * @return {Promise} - A promise that resolves to the loaded content.
+ */
+async function load(uri, options) {
+  const opt = await this.sanitize(uri, options),
+        url = opt.href;
+
+  return opt.localFile
+    ? this.file(url)
+    : this.http(url, options);
+}
+
+/**
+ * URI sanitizer function.
+ * @param {string} uri - The uri (url or filename) to sanity check.
+ * @param {object} options - An options hash.
+ * @return {Promise} - A promise that resolves to an object containing
+ *  sanitized uri data, or rejects it the input uri is deemed invalid.
+ *  The properties of the resolved object are assumed to be
+ *  valid attributes for an HTML 'a' tag. The sanitized uri *must* be
+ *  provided by the 'href' property of the returned object.
+ */
+async function sanitize(uri, options) {
+  options = vegaUtil.extend({}, this.options, options);
+
+  const fileAccess = this.fileAccess,
+        result = {href: null};
+
+  let isFile, loadFile, base;
+
+  const isAllowed = allowed_re.test(uri.replace(whitespace_re, ''));
+
+  if (uri == null || typeof uri !== 'string' || !isAllowed) {
+    vegaUtil.error('Sanitize failure, invalid URI: ' + vegaUtil.stringValue(uri));
+  }
+
+  const hasProtocol = protocol_re.test(uri);
+
+  // if relative url (no protocol/host), prepend baseURL
+  if ((base = options.baseURL) && !hasProtocol) {
+    // Ensure that there is a slash between the baseURL (e.g. hostname) and url
+    if (!uri.startsWith('/') && base[base.length-1] !== '/') {
+      uri = '/' + uri;
+    }
+    uri = base + uri;
+  }
+
+  // should we load from file system?
+  loadFile = (isFile = uri.startsWith(fileProtocol))
+    || options.mode === 'file'
+    || options.mode !== 'http' && !hasProtocol && fileAccess;
+
+  if (isFile) {
+    // strip file protocol
+    uri = uri.slice(fileProtocol.length);
+  } else if (uri.startsWith('//')) {
+    if (options.defaultProtocol === 'file') {
+      // if is file, strip protocol and set loadFile flag
+      uri = uri.slice(2);
+      loadFile = true;
+    } else {
+      // if relative protocol (starts with '//'), prepend default protocol
+      uri = (options.defaultProtocol || 'http') + ':' + uri;
+    }
+  }
+
+  // set non-enumerable mode flag to indicate local file load
+  Object.defineProperty(result, 'localFile', {value: !!loadFile});
+
+  // set uri
+  result.href = uri;
+
+  // set default result target, if specified
+  if (options.target) {
+    result.target = options.target + '';
+  }
+
+  // set default result rel, if specified (#1542)
+  if (options.rel) {
+    result.rel = options.rel + '';
+  }
+
+  // provide control over cross-origin image handling (#2238)
+  // https://developer.mozilla.org/en-US/docs/Web/HTML/CORS_enabled_image
+  if (options.context === 'image' && options.crossOrigin) {
+    result.crossOrigin = options.crossOrigin + '';
+  }
+
+  // return
+  return result;
+}
+
+/**
+ * File system loader factory.
+ * @param {object} fs - The file system interface.
+ * @return {function} - A file loader with the following signature:
+ *   param {string} filename - The file system path to load.
+ *   param {string} filename - The file system path to load.
+ *   return {Promise} A promise that resolves to the file contents.
+ */
+function fileLoader(fs) {
+  return fs
+    ? function(filename) {
+        return new Promise(function(accept, reject) {
+          fs.readFile(filename, function(error, data) {
+            if (error) reject(error);
+            else accept(data);
+          });
+        });
+      }
+    : fileReject;
+}
+
+/**
+ * Default file system loader that simply rejects.
+ */
+async function fileReject() {
+  vegaUtil.error('No file system access.');
+}
+
+/**
+ * HTTP request handler factory.
+ * @param {function} fetch - The Fetch API method.
+ * @return {function} - An http loader with the following signature:
+ *   param {string} url - The url to request.
+ *   param {object} options - An options hash.
+ *   return {Promise} - A promise that resolves to the file contents.
+ */
+function httpLoader(fetch) {
+  return fetch
+    ? async function(url, options) {
+        const opt = vegaUtil.extend({}, this.options.http, options),
+              type = options && options.response,
+              response = await fetch(url, opt);
+
+        return !response.ok
+          ? vegaUtil.error(response.status + '' + response.statusText)
+          : vegaUtil.isFunction(response[type]) ? response[type]()
+          : response.text();
+      }
+    : httpReject;
+}
+
+/**
+ * Default http request handler that simply rejects.
+ */
+async function httpReject() {
+  vegaUtil.error('No HTTP fetch method available.');
+}
+
+var typeParsers = {
+  boolean: vegaUtil.toBoolean,
+  integer: vegaUtil.toNumber,
+  number:  vegaUtil.toNumber,
+  date:    vegaUtil.toDate,
+  string:  vegaUtil.toString,
+  unknown: vegaUtil.identity
+};
+
+var typeTests = [
+  isBoolean,
+  isInteger,
+  isNumber,
+  isDate
+];
+
+var typeList = [
+  'boolean',
+  'integer',
+  'number',
+  'date'
+];
+
+function inferType(values, field) {
+  if (!values || !values.length) return 'unknown';
+
+  const n = values.length,
+        m = typeTests.length,
+        a = typeTests.map((_, i) => i + 1);
+
+  for (let i = 0, t = 0, j, value; i < n; ++i) {
+    value = field ? values[i][field] : values[i];
+    for (j = 0; j < m; ++j) {
+      if (a[j] && isValid(value) && !typeTests[j](value)) {
+        a[j] = 0;
+        ++t;
+        if (t === typeTests.length) return 'string';
+      }
+    }
+  }
+
+  return typeList[
+    a.reduce((u, v) => u === 0 ? v : u, 0) - 1
+  ];
+}
+
+function inferTypes(data, fields) {
+  return fields.reduce(function(types, field) {
+    types[field] = inferType(data, field);
+    return types;
+  }, {});
+}
+
+// -- Type Checks ----
+
+function isValid(_) {
+  return _ != null && _ === _;
+}
+
+function isBoolean(_) {
+  return _ === 'true' || _ === 'false' || _ === true || _ === false;
+}
+
+function isDate(_) {
+  return !Number.isNaN(Date.parse(_));
+}
+
+function isNumber(_) {
+  return !Number.isNaN(+_) && !(_ instanceof Date);
+}
+
+function isInteger(_) {
+  return isNumber(_) && Number.isInteger(+_);
+}
+
+function delimitedFormat(delimiter) {
+  const parse = function(data, format) {
+    const delim = {delimiter: delimiter};
+    return dsv(data, format ? vegaUtil.extend(format, delim) : delim);
+  };
+
+  parse.responseType = 'text';
+
+  return parse;
+}
+
+function dsv(data, format) {
+  if (format.header) {
+    data = format.header
+      .map(vegaUtil.stringValue)
+      .join(format.delimiter) + '\n' + data;
+  }
+  return d3Dsv.dsvFormat(format.delimiter).parse(data + '');
+}
+
+dsv.responseType = 'text';
+
+function isBuffer(_) {
+  return (typeof Buffer === 'function' && vegaUtil.isFunction(Buffer.isBuffer))
+    ? Buffer.isBuffer(_) : false;
+}
+
+function json(data, format) {
+  const prop = (format && format.property) ? vegaUtil.field(format.property) : vegaUtil.identity;
+  return vegaUtil.isObject(data) && !isBuffer(data)
+    ? parseJSON(prop(data))
+    : prop(JSON.parse(data));
+}
+
+json.responseType = 'json';
+
+function parseJSON(data, format) {
+  return (format && format.copy)
+    ? JSON.parse(JSON.stringify(data))
+    : data;
+}
+
+const filters = {
+  interior: (a, b) => a !== b,
+  exterior: (a, b) => a === b
+};
+
+function topojson(data, format) {
+  let method, object, property, filter;
+  data = json(data, format);
+
+  if (format && format.feature) {
+    method = topojsonClient.feature;
+    property = format.feature;
+  } else if (format && format.mesh) {
+    method = topojsonClient.mesh;
+    property = format.mesh;
+    filter = filters[format.filter];
+  } else {
+    vegaUtil.error('Missing TopoJSON feature or mesh parameter.');
+  }
+
+  object = (object = data.objects[property])
+    ? method(data, object, filter)
+    : vegaUtil.error('Invalid TopoJSON object: ' + property);
+
+  return object && object.features || [object];
+}
+
+topojson.responseType = 'json';
+
+const format = {
+  dsv: dsv,
+  csv: delimitedFormat(','),
+  tsv: delimitedFormat('\t'),
+  json: json,
+  topojson: topojson
+};
+
+function formats(name, reader) {
+  if (arguments.length > 1) {
+    format[name] = reader;
+    return this;
+  } else {
+    return vegaUtil.hasOwnProperty(format, name) ? format[name] : null;
+  }
+}
+
+function responseType(type) {
+  const f = formats(type);
+  return f && f.responseType || 'text';
+}
+
+function read(data, schema, timeParser, utcParser) {
+  schema = schema || {};
+
+  const reader = formats(schema.type || 'json');
+  if (!reader) vegaUtil.error('Unknown data format type: ' + schema.type);
+
+  data = reader(data, schema);
+  if (schema.parse) parse(data, schema.parse, timeParser, utcParser);
+
+  if (vegaUtil.hasOwnProperty(data, 'columns')) delete data.columns;
+  return data;
+}
+
+function parse(data, types, timeParser, utcParser) {
+  if (!data.length) return; // early exit for empty data
+
+  const locale = vegaFormat.timeFormatDefaultLocale();
+  timeParser = timeParser || locale.timeParse;
+  utcParser = utcParser || locale.utcParse;
+
+  var fields = data.columns || Object.keys(data[0]),
+      parsers, datum, field, i, j, n, m;
+
+  if (types === 'auto') types = inferTypes(data, fields);
+
+  fields = Object.keys(types);
+  parsers = fields.map(function(field) {
+    var type = types[field],
+        parts, pattern;
+
+    if (type && (type.startsWith('date:') || type.startsWith('utc:'))) {
+      parts = type.split(/:(.+)?/, 2);  // split on first :
+      pattern = parts[1];
+
+      if ((pattern[0] === '\'' && pattern[pattern.length-1] === '\'') ||
+          (pattern[0] === '"'  && pattern[pattern.length-1] === '"')) {
+        pattern = pattern.slice(1, -1);
+      }
+
+      const parse = parts[0] === 'utc' ? utcParser : timeParser;
+      return parse(pattern);
+    }
+
+    if (!typeParsers[type]) {
+      throw Error('Illegal format pattern: ' + field + ':' + type);
+    }
+
+    return typeParsers[type];
+  });
+
+  for (i=0, n=data.length, m=fields.length; i<n; ++i) {
+    datum = data[i];
+    for (j=0; j<m; ++j) {
+      field = fields[j];
+      datum[field] = parsers[j](datum[field]);
+    }
+  }
+}
+
+var loader = loaderFactory(
+  require('node-fetch'),
+  require('fs')
+);
+
+exports.format = format;
+exports.formats = formats;
+exports.inferType = inferType;
+exports.inferTypes = inferTypes;
+exports.loader = loader;
+exports.read = read;
+exports.responseType = responseType;
+exports.typeParsers = typeParsers;