WIP - add extractor, generate snippet_data

node_modules/fbjs/lib/UnicodeUtilsExtra.js.flow

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+/**
+ * Copyright (c) 2013-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @providesModule UnicodeUtilsExtra
+ * @typechecks
+ */
+
+/**
+ * Unicode-enabled extra utility functions not always needed.
+ */
+'use strict';
+
+const UnicodeUtils = require("./UnicodeUtils");
+/**
+ * @param {number} codePoint  Valid Unicode code-point
+ * @param {number} len        Zero-padded minimum width of result
+ * @return {string}           A zero-padded hexadecimal string (00XXXX)
+ */
+
+
+function zeroPaddedHex(codePoint, len) {
+  let codePointHex = codePoint.toString(16).toUpperCase();
+  let numZeros = Math.max(0, len - codePointHex.length);
+  var result = '';
+
+  for (var i = 0; i < numZeros; i++) {
+    result += '0';
+  }
+
+  result += codePointHex;
+  return result;
+}
+/**
+ * @param {number} codePoint  Valid Unicode code-point
+ * @return {string}           A formatted Unicode code-point string
+ *                            of the format U+XXXX, U+XXXXX, or U+XXXXXX
+ */
+
+
+function formatCodePoint(codePoint) {
+  codePoint = codePoint || 0; // NaN --> 0
+
+  var formatted = '';
+
+  if (codePoint <= 0xFFFF) {
+    formatted = zeroPaddedHex(codePoint, 4);
+  } else {
+    formatted = codePoint.toString(16).toUpperCase();
+  }
+
+  return 'U+' + formatted;
+}
+/**
+ * Get a list of formatted (string) Unicode code-points from a String
+ *
+ * @param {string} str        Valid Unicode string
+ * @return {array<string>}    A list of formatted code-point strings
+ */
+
+
+function getCodePointsFormatted(str) {
+  const codePoints = UnicodeUtils.getCodePoints(str);
+  return codePoints.map(formatCodePoint);
+}
+
+const specialEscape = {
+  0x07: '\\a',
+  0x08: '\\b',
+  0x0C: '\\f',
+  0x0A: '\\n',
+  0x0D: '\\r',
+  0x09: '\\t',
+  0x0B: '\\v',
+  0x22: '\\"',
+  0x5c: '\\\\'
+};
+/**
+ * Returns a double-quoted PHP string with all non-printable and
+ * non-US-ASCII sequences escaped.
+ *
+ * @param {string} str Valid Unicode string
+ * @return {string}    Double-quoted string with Unicode sequences escaped
+ */
+
+function phpEscape(s) {
+  var result = '"';
+
+  for (let cp of UnicodeUtils.getCodePoints(s)) {
+    let special = specialEscape[cp];
+
+    if (special !== undefined) {
+      result += special;
+    } else if (cp >= 0x20 && cp <= 0x7e) {
+      result += String.fromCodePoint(cp);
+    } else if (cp <= 0xFFFF) {
+      result += '\\u{' + zeroPaddedHex(cp, 4) + '}';
+    } else {
+      result += '\\u{' + zeroPaddedHex(cp, 6) + '}';
+    }
+  }
+
+  result += '"';
+  return result;
+}
+/**
+ * Returns a double-quoted Java or JavaScript string with all
+ * non-printable and non-US-ASCII sequences escaped.
+ *
+ * @param {string} str Valid Unicode string
+ * @return {string}    Double-quoted string with Unicode sequences escaped
+ */
+
+
+function jsEscape(s) {
+  var result = '"';
+
+  for (var i = 0; i < s.length; i++) {
+    let cp = s.charCodeAt(i);
+    let special = specialEscape[cp];
+
+    if (special !== undefined) {
+      result += special;
+    } else if (cp >= 0x20 && cp <= 0x7e) {
+      result += String.fromCodePoint(cp);
+    } else {
+      result += '\\u' + zeroPaddedHex(cp, 4);
+    }
+  }
+
+  result += '"';
+  return result;
+}
+
+function c11Escape(s) {
+  var result = '';
+
+  for (let cp of UnicodeUtils.getCodePoints(s)) {
+    let special = specialEscape[cp];
+
+    if (special !== undefined) {
+      result += special;
+    } else if (cp >= 0x20 && cp <= 0x7e) {
+      result += String.fromCodePoint(cp);
+    } else if (cp <= 0xFFFF) {
+      result += '\\u' + zeroPaddedHex(cp, 4);
+    } else {
+      result += '\\U' + zeroPaddedHex(cp, 8);
+    }
+  }
+
+  return result;
+}
+/**
+ * Returns a double-quoted C string with all non-printable and
+ * non-US-ASCII sequences escaped.
+ *
+ * @param {string} str Valid Unicode string
+ * @return {string}    Double-quoted string with Unicode sequences escaped
+ */
+
+
+function cEscape(s) {
+  return 'u8"' + c11Escape(s) + '"';
+}
+/**
+ * Returns a double-quoted Objective-C string with all non-printable
+ * and non-US-ASCII sequences escaped.
+ *
+ * @param {string} str Valid Unicode string
+ * @return {string}    Double-quoted string with Unicode sequences escaped
+ */
+
+
+function objcEscape(s) {
+  return '@"' + c11Escape(s) + '"';
+}
+/**
+ * Returns a double-quoted Python string with all non-printable
+ * and non-US-ASCII sequences escaped.
+ *
+ * @param {string} str Valid Unicode string
+ * @return {string}    Double-quoted string with Unicode sequences escaped
+ */
+
+
+function pyEscape(s) {
+  return 'u"' + c11Escape(s) + '"';
+}
+
+const UnicodeUtilsExtra = {
+  formatCodePoint: formatCodePoint,
+  getCodePointsFormatted: getCodePointsFormatted,
+  zeroPaddedHex: zeroPaddedHex,
+  phpEscape: phpEscape,
+  jsEscape: jsEscape,
+  cEscape: cEscape,
+  objcEscape: objcEscape,
+  pyEscape: pyEscape
+};
+module.exports = UnicodeUtilsExtra;