--- /dev/null
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const LEGAL_KEY_REGEX = /^[0-9a-z_.-]+$/;
+const LEGAL_NON_BINARY_VALUE_REGEX = /^[ -~]*$/;
+function isLegalKey(key) {
+ return LEGAL_KEY_REGEX.test(key);
+}
+function isLegalNonBinaryValue(value) {
+ return LEGAL_NON_BINARY_VALUE_REGEX.test(value);
+}
+function isBinaryKey(key) {
+ return key.endsWith('-bin');
+}
+function normalizeKey(key) {
+ return key.toLowerCase();
+}
+function validate(key, value) {
+ if (!isLegalKey(key)) {
+ throw new Error('Metadata key "' + key + '" contains illegal characters');
+ }
+ if (value != null) {
+ if (isBinaryKey(key)) {
+ if (!(value instanceof Buffer)) {
+ throw new Error('keys that end with \'-bin\' must have Buffer values');
+ }
+ }
+ else {
+ if (value instanceof Buffer) {
+ throw new Error('keys that don\'t end with \'-bin\' must have String values');
+ }
+ if (!isLegalNonBinaryValue(value)) {
+ throw new Error('Metadata string value "' + value +
+ '" contains illegal characters');
+ }
+ }
+ }
+}
+/**
+ * A class for storing metadata. Keys are normalized to lowercase ASCII.
+ */
+class Metadata {
+ constructor() {
+ this.internalRepr = new Map();
+ }
+ /**
+ * Sets the given value for the given key by replacing any other values
+ * associated with that key. Normalizes the key.
+ * @param key The key to whose value should be set.
+ * @param value The value to set. Must be a buffer if and only
+ * if the normalized key ends with '-bin'.
+ */
+ set(key, value) {
+ key = normalizeKey(key);
+ validate(key, value);
+ this.internalRepr.set(key, [value]);
+ }
+ /**
+ * Adds the given value for the given key by appending to a list of previous
+ * values associated with that key. Normalizes the key.
+ * @param key The key for which a new value should be appended.
+ * @param value The value to add. Must be a buffer if and only
+ * if the normalized key ends with '-bin'.
+ */
+ add(key, value) {
+ key = normalizeKey(key);
+ validate(key, value);
+ const existingValue = this.internalRepr.get(key);
+ if (existingValue === undefined) {
+ this.internalRepr.set(key, [value]);
+ }
+ else {
+ existingValue.push(value);
+ }
+ }
+ /**
+ * Removes the given key and any associated values. Normalizes the key.
+ * @param key The key whose values should be removed.
+ */
+ remove(key) {
+ key = normalizeKey(key);
+ validate(key);
+ this.internalRepr.delete(key);
+ }
+ /**
+ * Gets a list of all values associated with the key. Normalizes the key.
+ * @param key The key whose value should be retrieved.
+ * @return A list of values associated with the given key.
+ */
+ get(key) {
+ key = normalizeKey(key);
+ validate(key);
+ return this.internalRepr.get(key) || [];
+ }
+ /**
+ * Gets a plain object mapping each key to the first value associated with it.
+ * This reflects the most common way that people will want to see metadata.
+ * @return A key/value mapping of the metadata.
+ */
+ getMap() {
+ const result = {};
+ this.internalRepr.forEach((values, key) => {
+ if (values.length > 0) {
+ const v = values[0];
+ result[key] = v instanceof Buffer ? v.slice() : v;
+ }
+ });
+ return result;
+ }
+ /**
+ * Clones the metadata object.
+ * @return The newly cloned object.
+ */
+ clone() {
+ const newMetadata = new Metadata();
+ const newInternalRepr = newMetadata.internalRepr;
+ this.internalRepr.forEach((value, key) => {
+ const clonedValue = value.map(v => {
+ if (v instanceof Buffer) {
+ return Buffer.from(v);
+ }
+ else {
+ return v;
+ }
+ });
+ newInternalRepr.set(key, clonedValue);
+ });
+ return newMetadata;
+ }
+ /**
+ * Merges all key-value pairs from a given Metadata object into this one.
+ * If both this object and the given object have values in the same key,
+ * values from the other Metadata object will be appended to this object's
+ * values.
+ * @param other A Metadata object.
+ */
+ merge(other) {
+ other.internalRepr.forEach((values, key) => {
+ const mergedValue = (this.internalRepr.get(key) || []).concat(values);
+ this.internalRepr.set(key, mergedValue);
+ });
+ }
+ /**
+ * Creates an OutgoingHttpHeaders object that can be used with the http2 API.
+ */
+ toHttp2Headers() {
+ // NOTE: Node <8.9 formats http2 headers incorrectly.
+ const result = {};
+ this.internalRepr.forEach((values, key) => {
+ // We assume that the user's interaction with this object is limited to
+ // through its public API (i.e. keys and values are already validated).
+ result[key] = values.map((value) => {
+ if (value instanceof Buffer) {
+ return value.toString('base64');
+ }
+ else {
+ return value;
+ }
+ });
+ });
+ return result;
+ }
+ // For compatibility with the other Metadata implementation
+ _getCoreRepresentation() {
+ return this.internalRepr;
+ }
+ /**
+ * Returns a new Metadata object based fields in a given IncomingHttpHeaders
+ * object.
+ * @param headers An IncomingHttpHeaders object.
+ */
+ static fromHttp2Headers(headers) {
+ const result = new Metadata();
+ Object.keys(headers).forEach((key) => {
+ // Reserved headers (beginning with `:`) are not valid keys.
+ if (key.charAt(0) === ':') {
+ return;
+ }
+ const values = headers[key];
+ if (isBinaryKey(key)) {
+ if (Array.isArray(values)) {
+ values.forEach((value) => {
+ result.add(key, Buffer.from(value, 'base64'));
+ });
+ }
+ else if (values !== undefined) {
+ values.split(',').forEach(v => {
+ result.add(key, Buffer.from(v.trim(), 'base64'));
+ });
+ }
+ }
+ else {
+ if (Array.isArray(values)) {
+ values.forEach((value) => {
+ result.add(key, value);
+ });
+ }
+ else if (values !== undefined) {
+ values.split(',').forEach(v => result.add(key, v.trim()));
+ }
+ }
+ });
+ return result;
+ }
+}
+exports.Metadata = Metadata;
+//# sourceMappingURL=metadata.js.map
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git://repos.xcallymotion.com / motion2.git / blobdiff